論文 - 大橋　一仁

Development of tool life prediction system for square end-mills based on database of servo motor current value 査読

19 ( 1 )   JAMDSM0001 - JAMDSM0001   2025年1月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1299/jamdsm.2025jamdsm0001

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Study on Performance Degradation of Water-Soluble Grinding Fluids Due to Corruption and Methods for Its Prevention 査読

Sena Hosokawa, Takanori Fujiwara, Hiroyoshi Suzuki, Yoshiki Isokane, Shunsuke Fukata, Takashi Onishi, Hiroko Tada, Chiyuu Nakano, Jyun Naohara, Itsuo Urakami, Kazuhito Ohashi

Proceedings of the 26th International Symposium on Advances in Abrasive Technology (ISAAT2024)   2024年11月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Development of technology for anti-corruption of water-soluble grinding fluid due to ultraviolet irradiation 査読

Sena Hosokawa, Takanori Fujiwara, Hiroyoshi Suzuki, Yoshiki Isokane, Shunsuke Fukata, Takashi Onishi, Hiroko Tada, Chiyuu Nakano, Jyun Naohara, Itsuo Urakami, Kazuhito Ohashi

Proceedings of the 26th International Symposium on Advances in Abrasive Technology (ISAAT2024)   2024年11月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Study on Grinding Surface Temperature of Workpiece in Thrust Grinding Process 査読

Lingxiao GAO, Motoki KUIDA, Hiroyuki KODAMA, Kazuhito OHASHI

Proceedings of the 5th International Conference on Machining, Materials and Mechanical Technologies   318 - 319   2024年9月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Development of ball end-mill wear condition judgment system aided by abnormality detection and image classification 査読

Hiroyuki KODAMA, Soto KOGUE, Takahiro NISHI, Kazuhito OHASHI

Transactions of the JSME (in Japanese)   90 ( 937 )   24 - 00127   2024年

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担当区分：最終著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Japan Society of Mechanical Engineers  

DOI： 10.1299/transjsme.24-00127

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Experimental Investigation of Chatter Vibration Mechanism in Cylindrical Plunge Grinding Based on Mode Shape of Workpiece System 査読

Y. Matsumoto, Y. Takami, H. Kodama, K. Ohashi

Proceedings of 25rd International Symposium on Advances in Abrasive Technology (ISAAT2023)   1 - 6   2023年12月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Influence on Grinding Force Distribution with Grinding Length of Cemented Carbide with Vertical Face Grinding using with Double Layers Grinding Wheel 査読

S. Horiguchi, T. Fujiwara, R. Komatsubara, T. Onishi, H. Kodama, K. Ohashi, T. Maeda

Proceedings of 25rd International Symposium on Advances in Abrasive Technology (ISAAT2023)   1 - 6   2023年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Construction of grinding wheel decision support system using random forests for difficult-to-cut material 査読

Hiroyuki Kodama, Takao Mendori, Yuta Watanabe, Kazuhito Ohashi

Precision Engineering   84   162 - 176   2023年11月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.precisioneng.2023.08.004

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Study on milling characteristics and surface integrity of AZ31B magnesium alloy 査読

Pengchong ZHANG, Mingxuan DU, Rongjun WANG, Kazuhito OHASHI

Q0107   2023年11月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Study of Machined Surface Quality of AZ31B Magnesium Alloy by End Milling 査読

13 ( 10 )   1712 - 1712   2023年10月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3390/met13101712

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Study on Milling Characteristics and Surface Integrity of AZ31B Magnesium Alloy 査読

2023年9月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s12666-023-03028-7

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その他リンク： https://link.springer.com/article/10.1007/s12666-023-03028-7/fulltext.html

Effect of Vibration Behavior in Low-Frequency Vibration Cutting on Surface Properties of Workpiece 査読

17 ( 5 )   434 - 448   2023年9月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.20965/ijat.2023.p0434

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マシニングセンタの直動軸運転時における案内部の発熱が熱変形挙動に及ぼす影響とその低減法の検討 査読

近藤凌司, 大橋一仁

精密工学会誌   89 ( 8 )   634 - 641   2023年8月

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担当区分：最終著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人 精密工学会  

DOI： 10.2493/jjspe.89.634

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Study on self-excited chatter vibrations increased by transition of natural vibration modes in cylindrical plunge grinding process 査読

Hiroyuki Kodama, Yuya Takami, Kota Yoshida, Kazuhito Ohashi

Proceedings of LEMP2023   030   2023年6月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Estimation of thermal deformation on machining center in linear feed axis operation and evaluation of cooling method for guiding using FEM 査読

Ryoji Kondo, Kazuhito Ohashi

Proceedings of LEMP2023   017   2023年6月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Study on Additively Manufactured Mechanical Seal (Part 1) 査読

17 ( 4 )   306 - 317   2022年12月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.2474/trol.17.306

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Research on Cutting Characteristics and Machined Surface Quality of AZ31B 査読

481 - 488   2022年12月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Study on Improvement of Grinding Energy by Using Grinding Wheel Tooled by the Multiple Helical Dressing in Surface Grinding 査読

76 - 81   2022年12月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Influence on Grinding Force Distribution of Grinding Fluid Supply Method on Cemented Carbide with Vertical Face Grinding 査読

82 - 87   2022年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Additive Manufacturing技術を適用したメカニカルシールの研究(第2報) ―数値解析および評価試験に基づく設計手法の理論的検討― 査読

瀧ヶ平 宜昭, 前谷 優貴, 伊藤 正伸, 上村 訓右, 大橋 一仁

トライボロジスト   67 ( 12 )   893 - 903   2022年12月

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担当区分：最終著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.18914/tribologist.22-00011

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Study on the chatter vibration focused on vibration mode of workpiece system in cylindrical plunge grinding 査読

Proceedings of the 19th International Conference on Precision Engineering   2022年11月

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担当区分：責任著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Interpolation prediction for grinding wheel decision support system using random forest 査読

2022年11月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Estimation of grinding stock of workpiece during plunge grinding process 査読

2022年11月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Effect of Grinding Wheel Tooth Thickness on Grinding Force Distributions in Face Grinding of Cemented Carbide with Constant Processing Efficiency 査読

2022年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Investigation of behavior of abrasive grains in superfinishing 査読

2022年11月

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担当区分：責任著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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工作機械の案内部の発熱による熱変形挙動の推定とその対策の検討

近藤 凌司, 大橋 一仁

精密工学会学術講演会講演論文集   2022A   252 - 253   2022年8月

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記述言語：日本語   出版者・発行元：公益社団法人 精密工学会  

工作機械の案内部の発熱による熱変形挙動を検証，その対策を検討することを目的とし，実機を用いた実験，有限要素法によるシミュレーションを行った．案内部の発熱のみを与えたシミュレーションでは，主軸-テーブル変位は依然として存在し，無視できない大きさである可能性を示唆した．その対策として摺動面近傍を冷却する手法を想定し，シミュレーションによってその効果を確認した．

DOI： 10.11522/pscjspe.2022a.0_252

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Additive Manufacturing技術を適用したメカニカルシールの研究(第1報) ―数値解析および静的特性の実験的研究― 査読

瀧ヶ平 宜昭, 前谷 優貴, 伊藤 正伸, 上村 訓右, 大橋 一仁

トライボロジスト   67 ( 8 )   589 - 603   2022年8月

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担当区分：最終著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.18914/tribologist.22-00003

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Accurate estimation of workpiece dimension in plunge grinding without sizing gauge 査読

Takashi Onishi, Yuki Murata, Kohei Fujiwara, Moriaki Sakakura, Kazuhito Ohashi

Precision Engineering   74   441 - 446   2022年3月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

In the cylindrical grinding process, the residual grinding allowance is left owing to the rubbing of the abrasive grains and the elastic deformation of the grinding system caused by the large normal grinding force. Therefore, a sizing gauge is generally used to monitor the workpiece diameter during the process. However, the sizing gauge disturbs the grinding operations, such as loading and unloading the workpiece. In this study, a new method for estimating the grinding stock of a ground workpiece is proposed. In the proposed method, the grinding stock can be estimated without a sizing gauge. The removed volume of the workpiece can be calculated from the power consumption of the wheel motor, which is easily measured. Before the grinding experiments, the specific grinding energy is determined from several grinding results. During the grinding process, the grinding stock of the ground workpiece was estimated using the determined specific grinding energy. It was confirmed that the grinding stock could be accurately estimated under several grinding conditions.

DOI： 10.1016/j.precisioneng.2021.08.012

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High efficiency dry grinding of CFRP using in-process cleaning of wheel surface by dry ice jet 査読

155 - 159   2021年12月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Estimation of Grinding Stock in Cylindrical Plunge Grinding 査読

160 - 163   2021年12月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Influence on Grinding Force Distribution in Setting Depth of Cut Variations of Cemented Carbide with Vertical Face Grinding 査読

187 - 192   2021年12月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Effect of Viscoelasticity of Thermoplastic Resin Bonded Wheel on Ultra-Precision Grinding of SiC Wafers 査読

193 - 198   2021年12月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Support System for Deciding Cutting Condition in Mold Steel Machining Supported by Data-Mining Methods 査読

412 - 417   2021年12月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Effect of Vibration Behaviors on the Properties of Machined Surfaces Created by Low-frequency Vibration Cutting 査読

1 - 6   2021年12月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Estimation of Thermal Deformation of CNC Lathe Based on Measurement of Temperature Rise 査読

118 - 120   2021年11月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Abrasive jet machining for the microprofile control patterning of herringbone grooves 査読

Hiroyuki Kodama, Shota Nakamae, Masashi Harada, Daichi Wada, Kazuhito Ohashi

Precision Engineering   72   527 - 542   2021年11月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.precisioneng.2021.07.002

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Improvement of form accuracy in cylindrical traverse grinding with steady rest by controlling traverse speed 査読

15 ( 4 )   JAMDSM0049 - JAMDSM0049   2021年6月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1299/jamdsm.2021jamdsm0049

Web of Science

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An Effect of a Setting Depth of Cut in a Face Grinding Process with a Single Layer Electro Plated Diamond Grinding Wheel with Periphery R Shape 査読

B-2-8   2020年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Accurate Estimation of Workpiece Dimension in Plunge Grinding without Sizing Gauge 査読

B-2-9   2020年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1016/j.precisioneng.2021.08.012

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Improvement of Form Accuracy of Slender Workpiece in Cylindrical Traverse Grinding with Steady Rest 査読

Hidetaka FUJII, Takashi ONISHI, Chinhu LIN, Moriaki SAKAKURA, Kazuhito OHASHI

Proceedings of 18nd International Conference on Precision Engineering (ICPE2020)   B-2-6   2020年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Thermal influence on surface layer of carbon fiber reinforced plastic (CFRP) in grinding 査読

Hiroyuki Kodama, Shingo Okazaki, Yifan Jiang, Hiroyuki Yoden, Kazuhito Ohashi

Precision Engineering   65   53 - 63   2020年9月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

© 2020 Elsevier Inc. In this study, we investigated thermal influence on surface layer of CFRP in grinding with heat conduction analysis using grinding temperature at wheel contact area on dry and wet condition. Moreover, the thermal affected layer was analyzed through an experiment to examine the temperature of glass transition and thermal decomposition of the matrix resin that composes the CFRP used in this study. The influence of thermal effect on grinding of CFRP was verified based on observation of ground surface finish after grinding using SEM and the measurement of surface roughness. From the measurement result of DSC (Differential Scanning Calorimetry)，TG-DTA (Thermogravimetry-Differential Thermal Analysis), It was found that the thermal affected layer of CFRP includes a layer in which the matrix resin is changed in quality by exceeding the glass transition temperature and a layer in which the matrix resin is thermally decomposed by exceeding the thermal decomposition temperature. In addition, it was found that the surface roughness was significantly reduced if the thermal affected layer with thermal decomposition was generated. In each grinding atmosphere, it tended to increase of grinding temperature at wheel contact area with increasing in the setting depth of cut. In the case of dry grinding, grinding temperature at wheel contact area increased up to t thermal decomposition temperature of the matrix resin. However, in the case of the wet grinding, grinding temperature at wheel contact area did not increase until thermally decomposition temperature. From the result of simulation about thermal affected layer, influence of grinding heat increased with increasing in the setting depth of cut. Ultimately, the thermal affected layer with thermal decomposition was generated in dry grinding. Moreover, from the results of SEM observation, it was confirmed that the surface finish properties deteriorated significantly due to thermal decomposition of the matrix resin in the case of Δ = 400 μm in the setting depth of cut at fiber angle θ = 0°. On the other hand, it was confirmed that the micro damage of carbon fiber was occurred in wet grinding at each setting depth of cut.

DOI： 10.1016/j.precisioneng.2020.04.005

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Effect of steady rest in cylindrical traverse grinding of slender workpiece 査読

Hidetaka Fujii, Takashi Onishi, Chinhu Lin, Moriaki Sakakura, Kazuhito Ohashi

JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing, LEMP 2020   2020年

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掲載種別：研究論文（国際会議プロシーディングス）  

In the case of traverse grinding of a slender workpiece, the ground workpiece is easily deformed by the normal grinding force due to its low stiffness. To reduce the form error caused by the elastic deformation of the workpiece, a steady rest is widely used. Generally, a steady rest is set to push the ground area of the workpiece. However, the stepped shape error is generated at the contact point where a steady rest pushed the workpiece because the pushing force of a steady rest is decreased after the material of the contact point is removed. In this study, to reduce the stepped shape error of the ground workpiece, we proposed a new method to set a steady rest. In this method, the steady rest was set to push the area where was not ground. In addition, the traverse speed of the workpiece was adjusted to keep the elastic deformation of the workpiece constant. The suitable method to control the traverse speed was estimated by using a beam model that could simulate the elastic deformation of the workpiece during the grinding process. It was confirmed that the new method could improve the form accuracy of a slender workpiece through grinding experiments.

DOI： 10.1115/LEMP2020-8507

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Improvement of the form accuracy ground by a slender wheel in internal grinding 査読

Takashi Onishi, Yusuke Nakabayashi, Moriaki Sakakura, Go Ichiba, Kazuhito Ohashi

JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing, LEMP 2020   2020年

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掲載種別：研究論文（国際会議プロシーディングス）  

In the case of internal grinding of a deep hole, the inner surface of the hole was ground by a slender grinding wheel that has a high aspect ratio. A slender grinding wheel is bent by the normal grinding force during the grinding process. Therefore, the form accuracy of the ground workpiece is decreased especially when the aspect ratio of a wheel is high. In our previous study, it was confirmed that the biggest factor that generated the form error of the workpiece was the elastic deformation owning to the normal grinding force. To reduce the form error of the ground workpiece, it is effective to expand the spark-out duration. However, the expansion of the spark-out duration leads to the low productivity. In this study, the form of the grinding wheel was modified by a diamond dresser to improve the form accuracy of the workpiece without expanding the spark-out duration. The modified form of a wheel was determined to compensate the form error of the workpiece generated by the elastic deformation of the grinding wheel. Thorough several grinding experiment, it was confirmed that the form accuracy of the ground workpiece was successfully improved by modifying the form of a slender grinding wheel without expanding the spark-out duration.

DOI： 10.1115/LEMP2020-8595

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Effect of the Steady Rest on the Profile of a Slender Workpiece in Travers Grinding 査読

Chinhu Lin, Takashi Onishi, Koichi Sakamoto, Hidetaka Fujii, Moriaki Sakakura, Kazuhito Ohashi

Proceedings of 22nd International Symposium on Advances in Abrasive Technology (ISAAT2019)   A08   2019年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Finite Element Simulation of Residual Stress in Milling of AZ31B 査読

Pengchong ZHANG, Lifeng MA, Rongjun WANG, Yao HUANG, Kazuhito OHASHI

Proceedings of 22nd International Symposium on Advances in Abrasive Technology (ISAAT2019)   C10   2019年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Influence of Grinding Temperature on Surface Quality of CFRP 査読

Shingo OKAZAKI, Yifan JIANG, Hiroyuki KODAMA, Hiroyuki YODEN, Kazuhito OHASHI

Proceedings of 22nd International Symposium on Advances in Abrasive Technology (ISAAT2019)   S09   2019年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Investigation on Concentric Mutual Lapping Characteristic for Improvement in Sliding Surface Function of SiC Ceramics 査読

Yusuke TANIMOTO, Hayato KOYAMA, Hiroyuki KODAMA, Kazuhito OHASHI

Proceedings of 22nd International Symposium on Advances in Abrasive Technology (ISAAT2019)   A22   2019年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Influence on Grinding Force Distribution in Feed Rate Variations of Cemented Carbide with Vertical Face Grinding 査読

Takashi TSUJINO, Takanori FUJIWARA, Hiroyuki KODAMA, Takashi ONISHI, Shinya TSUKAMOTO, Kazuhito OHASHI

Proceedings of 22nd International Symposium on Advances in Abrasive Technology (ISAAT2019)   2019年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Investigation of Principal Factor Decision Support System Using Data-Mining Methodology for Surface Grinding Wheel 査読

Hiroyuki KODAMA, Itaru UOTANI, Takao MENDORI, Kazuhito OHASHI

Proceedings of 22nd International Symposium on Advances in Abrasive Technology (ISAAT2019)   A21   2019年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Investigation of principal factor decision support system using data mining methodology for surface grinding wheel 査読

Hiroyuki Kodama, Takao Mendori, Kazuhito Ohashi

International Journal of Abrasive Technology   9 ( 4 )   303 - 318   2019年12月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

© 2019 Inderscience Enterprises Ltd. The five factors (abrasive grain, grain size, grade, structure and bonding material) of the three main elements (abrasive grain, bonding material and pore) of a grinding wheel are important parameters affecting surface quality and grinding efficiency, however it is difficult to determine an optimal combination of grinding conditions for workpiece material. In previous research, we constructed a support system for effectively selecting an appropriate grinding wheel using decision tree technique. We also proposed a visualisation process to show how grinding wheel elements and factors correspond to the materials characteristics of the workpiece material. In this research, to evaluate the usefulness of prepared visualisation maps and their effectiveness in deciding grinding wheel elements, we performed comparison experiments applying the surface grinding technique to JIS SUS310S material using PA abrasive grain as recommended by the grain-type visualisation map and WA and GC abrasive grains for comparison purposes. We found that visualisation maps enable quick selection of a grinding wheel even for the grinding of difficult-to-cut materials for which grinding wheel selection is usually difficult.

DOI： 10.1504/IJAT.2019.106676

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Improvement of the Form Accuracy in Internal Plunge Grinding by the High Aspect Ratio Wheel 査読

Takashi Onishi, Yusuke Nakabayashi, Moriaki Sakakura, Kazuhito Ohashi

Proceedings of the 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   1 - 3   2019年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Concentric mutual lapping to improve sliding surface function of SiC ceramics 査読

Hiroyuki Kodama, Hayato Koyama, Tomoaki Ishii, Yusuke Tanimoto, Kazuhito Ohashi

International Journal of Automation Technology   13 ( 6 )   756 - 764   2019年11月

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掲載種別：研究論文（学術雑誌）  

© 2019, Fuji Technology Press. All rights reserved. Ring-shaped SiC ceramics used in sliding components were examined herein. Conventional lapping generates many shallow scratches in random directions in the surface of such SiC ceramics, and these starches extend from the inner circumference of the surface to its perimeter. The scratches affect the ability of the surface to prevent liquid from escaping from the perimeter side to the inner-circumference side of the SiC ring, and they can increase the friction force of the finished surface as a sliding material. We propose concentric mutual lapping to remove the scratches caused by conventional lapping. The surface topography of a SiC ring is evaluated quantitatively using a white light interferometer, and a vector and quantitative analysis of the surface profile is proposed. The results show that concentric mutual lapping can quickly remove the scratches caused by conventional lapping, and subsequently, circumferential scratches are generated along the lapping direction. We have also conducted sliding tests to analyze the effect of surface topography on the surface function as a sliding material. The results reveal that concentric mutual lapping suppresses the differences in surface function that occurred depending on the sliding direction.

DOI： 10.20965/ijat.2019.p0756

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Improvement of the form accuracy of a slender workpiece in cylindrical traverse grinding 査読

Takashi Onishi, Teppei Takashima, Moriaki Sakakura, Koichi Sakamoto, Kazuhito Ohashi

International Journal of Automation Technology   13 ( 6 )   728 - 735   2019年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

© 2019, Fuji Technology Press. All rights reserved. During the cylindrical traverse grinding of a slender workpiece, the ground workpiece is easily bent by the normal grinding force owing to its low stiffness. Therefore, it is difficult to finish the slender workpiece with high accuracy. To prevent the elastic deformation of a workpiece during the grinding process, a steady rest is generally used. However, considerable skill of the worker is required to use a steady rest. Therefore, we developed a new traverse grinding method without any steady rest. In this method, the elastic deformation of a workpiece was kept constant by controlling the traverse speed of the workpiece. At the middle of the ground workpiece, where the elastic deformation increased easily, the traverse speed was slowed down. However, this method had a longer grinding cycle time because the average traverse speed decreased compared to that of the conventional method. To shorten the cycle time, the peripheral speed of the grinding wheel was increased to decrease the normal grinding force. Basic grinding experiments were carried out under several grinding conditions by changing the peripheral speed of the wheel. From these grinding experiments, it was confirmed that the normal grinding force and the form error of the ground workpiece decreased as the peripheral wheel speed increased. By using results obtained from basic experiments, grinding experiments involving changes in the traverse speed were carried out at two peripheral wheel speeds. The grinding cycle time was reduced successfully by increasing the peripheral wheel speed without an increment in the form error of the ground workpiece. Furthermore, a form error was observed at the end of the workpiece where the grinding wheel traveled away from the workpiece. The form error occurred because the normal grinding force decreased rapidly when the contact length between the workpiece and the wheel was decreased at the end of the workpiece. To prevent rapid changes in the normal grinding force, the traverse speed of the workpiece was increased at the end of the workpiece. By using this method, a ground workpiece with high form accuracy was obtained.

DOI： 10.20965/ijat.2019.p0728

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Improvement of form accuracy in internal grinding using a slender grinding wheel: Prediction of the suitable moment of the wheel retraction in the plunge internal grinding 査読

Takashi Onishi, Yuki Oda, Moriaki Sakakura, Yusuke Nakabayash, Kuya Nishi, Kazuhito Ohashi

Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering   85 ( 10 )   885 - 890   2019年10月

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掲載種別：研究論文（学術雑誌）  

© 2019 Japan Society for Precision Engineering. All rights reserved. An internal surface of a deep hole is finished by internal grinding. Although the grinding wheel is fed to the axial direction of the workpiecc with oscillation in the conventional internal grinding, the end of the wheel wears out. To prevent the intensive wheel wear, we proposed a new internal grinding method. In this method, the grinding wheel was fed to the radial direction and the plunge grinding was carried out by a slender grinding wheel. In this method, the grinding wheel should be retracted at the suitable moment to reduce the internal form error of the ground workpiecc. The main cause of the form error is elastic deformation of the grinding wheel, and the wheel runout is also an error factor. The form error of the workpiece was improved with considering two kinds of error factor in the plunge internal grinding with a slender grinding wheel. Furthermore, the profile of the grinding wheel was modified to shorten the grinding cycle time.

DOI： 10.2493/jjspe.85.885

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円筒研削加工における研削抵抗の振動の遷移に関する研究 査読

山本優, NAMBIAR Anand, 松本耕, 塚本真也, 大橋一仁

砥粒加工学会誌   63 ( 6 )   2019年6月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

J-GLOBAL

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Decision support system for principal factors of grinding wheel using data mining methodology 査読

H.Kodama, T.Uotani, K.Ohashi

Int. J. Abrasive Technology   9 ( 2 )   89 - 98   2019年1月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

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Special issue on precision abrasive technology of difficult-to-machine materials

Hirofumi Suzuki, Kazuhito Ohashi

International Journal of Automation Technology   12 ( 6 )   861   2018年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Fuji Technology Press  

DOI： 10.20965/ijat.2018.p0861

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Improvement of shape accuracy in internal grinding using a slender grinding wheel 査読

Takashi Onishi, Kuya Nishi, Sakakura Moriaki, Yusuke Nakabayashi, Kazuhito Ohashi

Proceedings of 17th International Conference on Precision Engineering (ICPE2018)   2018年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Study on concentric mutual lapping for improvement in sliding surface function of SiC ceramics 査読

Yusuke Tanimoto, Hayato Koyama, Hiroyuki Kodama, Kazuhito Ohashi

Proceedings of the 21st International Symposium on Advances in Abrasive Technology (ISAAT2018)   2018年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

© ISAAT 2018 - 21st International Symposium on Advances in Abrasive Technology. All rights reserved. In this study, the ring shaped SiC ceramics applied to sliding components are selected as specimens. In the surface of SiC ceramics, many scratches penetrating the inner edge to outer one are generated in random direction by conventional lapping. The scratches affect the surface functions in prevention of fluid exuding from the outer side to the inner side of SiC ring and have low friction force on the finished surface as a sliding material. In this study, the concentric mutual lapping is proposed to remove the scratches by conventional lapping. Then, the surface topography is evaluated quantitatively by the white light interferometer and proposed the vectorial and quantitative analysis of surface profile. As a result, the concentric mutual lapping can remove scratches quickly by the conventional lapping. And then circumferential scratches along a lapping direction were generated. In addition, we analyzed effect of surface topography on the surface function as a sliding material by sliding tests. From the investigation, it turned out that the concentric mutual lapping suppressed the difference in surface functions depending on the sliding direction.

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Estimation of the shape error in the Long workpiece from the normal grinding force of cylindrical traverse grinding 査読

Koichi Sakamoto, Takashi Onishi, Moriaki Sakakura, Naoki Kawaguchi, Kazuhito Ohashi

Proceedings of the 21st International Symposium on Advances in Abrasive Technology (ISAAT2018)   2018年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

© ISAAT 2018 - 21st International Symposium on Advances in Abrasive Technology. All rights reserved. In cylindrical traverse grinding of a slender workpiece, the elastic deformation of the workpiece is caused by the normal grinding force. Due to the low stiffness of a slender workpiece, the workpiece shape error tends to increase especially at the end edge where the wheel draws away from the workpiece. This shape error observed at the end edge of the workpiece has great influence on the shape accuracy of the ground workpiece. Therefore, it is necessary to reduce the shape error at the end edge to improve the shape accuracy. The purpose of this study is to estimate the shape error at the end edge of the workpiece to explore appropriate grinding conditions. The shape error of the ground workpiece was estimated by calculating the elastic deformation of the ground workpiece based on the measured normal grinding force. The estimated shape error agreed well with the measured one of the actually ground workpiece. Investigation compared the shape error of the ground workpiece with the estimated one from the normal grinding force measured during the process.

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Development of the intelligent cylindrical grinding system considering the thermal deformation of a workpiece 査読

Takashi ONISHI, Moriaki SAKAKURA, Takuo OKANOUE, Kohei FUJIWARA, Yasuhiro FUJIYAMA, Kazuhito OHASHI

Journal of Advanced Mechanical Design Systems and Manufacturing   12 ( 5 )   1 - 8   2018年10月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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Decision support system for principal factors of grinding wheel using data-mining methodology 査読

Hiroyuki Kodama, Itaru Uotani, Kazuhito Ohashi

Proceedings of the 21st International Symposium on Advances in Abrasive Technology (ISAAT2018)   9 ( 2 )   89 - 98   2018年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

© ISAAT 2018 - 21st International Symposium on Advances in Abrasive Technology. All rights reserved. The recommended grinding conditions are described in five factors (abrasive grain, grain size, grade, structure, and bonding material) of the three main elements (abrasive grain, bonding material, and pore) in the grinding wheel catalog data-set. As systematic arrangement is not made, grinding conditions (cutting speed, table feed, depth of cut) have to be decided on the basis of an experienced engineer's information or experience. Moreover, although the setting of the five factors of the three elements of a grinding wheel is important parameter that affects the surface quality and grinding efficiency, it is difficult to determine the optimal combination of workpiece materials and grinding conditions. In this research, a support system for effectively deciding the desired grinding wheel was built by using a decision tree technique, which is one of the data-mining techniques. This system extracts a significant tendency of grinding wheel conditions from catalog data. As a result, a visualization process was proposed in correspondence to the action of the grinding wheel elements and their factors to the material characteristics of the workpiece material. In this report, we produced patterns to support selection of grinding wheels by visualizing the surface grinding wheel selection decision tendency from more amount of data, based on data mixed with JIS (Japan Industrial Standards) and maker's catalog data.

DOI： 10.1504/IJAT.2019.101399

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Influence of Grinding Atmosphere on Grinding Characteristics of CFRP (Effect of Soluble Coolant or Liquid Nitrogen Supply) 査読

Shingo Okazaki, Yifan Jiang, Hiroyuki Kodama, Hiroyuki Yoden, Kazuhito Ohashi

Proceedings of 2018 International Conference on Machining, Materials and Mechanical Technologies (2018 IC3MT)   105 - 109   2018年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Decision support system for grinding wheel selection using data-mining 査読

Hiroyuki Kodama, Kazuhito Ohashi, Itaru Uotani

Proceedings of euspen’s 18th International Conference & Exhibition   213 - 214   2018年6月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

© 2018 CURRAN-CONFERENCE. All rights reserved. In the grinding wheel catalog data-set, the recommended grinding conditions are shown in reference to five factors (abrasive grain, grain size, grade, structure, and bonding material) of the three main elements (abrasive grain, bonding material, and pore). Since systematic arrangement is not made, grinding conditions (cutting speed, table feed, depth of cut) have to be decided on the basis of an experienced engineer's information or experience. Moreover, although the setting of the five factors of the three elements of a grinding wheel is important parameter that affects the surface quality and grinding efficiency, it is difficult to determine the optimal combination of workpiece materials and grinding conditions. In this research, a support system for effectively deciding the desired grinding wheel was built by using a decision tree technique, which is one of the data-mining techniques. This system extracts a significant tendency of grinding wheel conditions from catalog data. As a result, a visualization process was proposed in correspondence to the action of the grinding wheel elements and their factors to the material characteristics of the workpiece material.

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Recovery of grindactivity by dry ice blasting on micro-grit diamond wheel in dry grinding of carbon 査読

Yuto Katayama, Yuki Ohta, Hiroyuki Kodama, Kazuhito Ohashi

ISAAT 2017 - Proceedings of the 20th International Symposium on Advances in Abrasive Technology   76 - 80   2017年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

© ISAAT 2017.All right reserved. In dry grinding of hard carbon parts with micro-grit diamond wheels, carbon chips adhere to the wheel surface and the grindactivity of diamond wheel is remarkably lost in a short time. There blunt diamond wheels after wheel loading have an influence on the grinding results such as the stock removal, the surface roughness of workpiece. Generally, the grinding ability of diamond wheel in which the wheel loading occurs is recovered by the dressing. However, the dressing removes not only carbon chips but also abrasive grains under carbon chips, which have enough cutting performance. Since the dressing increases irrelevant wheel wear in this case, dressing is not desirable from the viewpoint of total life of grinding wheel and manufacturing cost. The carbon chips on wheel surface could be also removed by the organic solvent cleaning, however it is undesirable for working environments. The purpose of this research is to clean up carbon chips on wheel surface by dry ice blasting for dry grinding. In addition, the recovery of grindactivity after dry ice blasting was investigated. Dry ice hardly affects the environment and workers because dry ice sublimes to carbon dioxide. In this paper, the grindactivity of micro-grit diamond wheels clean up by dry ice blasting is investigated, analyzing surface roughness of workpiece, stock removal and tangential force in grinding tests. In addition, the grindactivity of wheels treated by other methods is investigated. As a result, the dry ice blasting can remove carbon chips accumulated on micro-grit diamond wheel enough to recover the grindactivity of wheel with normal surface roughness, stock removal and tangential force as before wheel loading.

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Improvement of shape accuracy in internal grinding with slender grinding wheel 査読

Takashi Onishi, Kuya Nishi, Moriaki Sakakura, Kazuhito Ohashi

ISAAT 2017 - Proceedings of the 20th International Symposium on Advances in Abrasive Technology   958 - 961   2017年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

© ISAAT 2017.All right reserved. The shape error of the ground workpiece worsens in case of internal grinding with a slender grinding wheel. In this study, we propose a new grinding system to improve the shape accuracy of the ground workpiece, where the grinding force was estimated previously to minimize the shape error. Considering the effect of wheel wear and wheel run-out on the shape error, the optimized grinding force was obtained by simulating the wheel wear before grinding. Grinding experiments were carried out to verify the proposed system which successfully reduced shape error of the workpiece.

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Development of the grinding wheel decision support system using data mining method 査読

Hiroyuki Kodama, Koichi Okuda, Kazuhito Ohashi

Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017   2017年11月

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掲載種別：研究論文（国際会議プロシーディングス）  

In the grinding wheel catalog data-set, the recommended grinding conditions are shown in reference to five factors (abrasive grain, grain size, grade, structure, and bonding material) of the three main elements (abrasive grain, bonding material, and pore). Since systematic arrangement is not made, grinding conditions (cutting speed, table feed, depth of cut) have to be decided on the basis of an experienced engineer's information or experience. Moreover, although the setting of the five factors of the three elements of a grinding wheel is important parameter that affects the surface quality and grinding efficiency, it is difficult to determine the optimal combination of workpiece materials and grinding conditions. In this research, a support system for effectively deciding the desired grinding wheel was built by using a decision tree technique, which is one of the data-mining techniques. This system extracts a significant tendency of grinding wheel conditions from catalog data. As a result, a visualization process was proposed in correspondence to the action of the grinding wheel elements and their factors to the material characteristics of the workpiece material.

DOI： 10.1299/jsmelem.2017.9.009

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Development of intelligent cylindrical grinding system considering thermal deformation of workpiece 査読

Takashi Onishi, Moriaki Sakakura, Takuo Okanoue, Yasuhiro Fujiyama, Kazuhito Ohashi

Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017   12 ( 5 )   2017年11月

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掲載種別：研究論文（国際会議プロシーディングス）  

In cylindrical grinding, thermal deformation of a ground workpiece can reduce the size accuracy. To improve the size accuracy, it is necessary to consider the thermal deformation during grinding process. In this study, we develop an intelligent grinding system that can consider the thermal deformation of the ground workpiece. In this system the thermal deformation of the workpiece is simulated during grinding process. The thermal deformation is simulated from the measured grinding force. Grinding force is measured by the strain gauges mounted on the race center. The grinding heat conducted into the ground workpiece is estimated from the measured normal grinding force. The net stock removal, that is the stock removal measured after the workpiece is cooled, is estimated by adding the measured stock removal and simulated thermal deformation of the workpiece. To obtain the target stock removal, the grinding wheel is retracted as the net stock removal is reached to the target stock removal. With using the developed grinding system, grinding experiments were carried out. In these grinding experiments, the size error is reduced less than 1 micro meter in radius even though the thermal deformation is more than 2 micro meters in radius. With grinding experiments, it is confirmed that the developed grinding system can improve the size accuracy successfully.

DOI： 10.1299/jsmelem.2017.9.143

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Efficiency Investigation of Removal of Loading Carbon Chips on Wheel Surface Using Dry Ice Blasting 査読

Yuki Ohta, Soziro Murakawa, Kazuhito Ohashi

Key Engineering Materials   749   124 - 129   2017年8月

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担当区分：責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

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長尺工作物の円筒トラバース研削における形状精度の改善 工作物の弾性変形を考慮したトラバース速度の制御 査読

大西孝, 小谷拓也, 小谷拓也, 坂倉守昭, 大橋一仁, 高島哲平, 塚本真也

砥粒加工学会誌   60 ( 10 )   551 - 556   2016年10月

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掲載種別：研究論文（学術雑誌）  

J-GLOBAL

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Estimation of the Shape Error in Internal Grinding by High aspect Ratio Grinding Wheel 査読

Takashi Onishi, Moriaki Sakakura, Kazuki Oda, Kuya Nishi, Kazuhito Ohashi

Proceedings of 2016 International Conference on Machining, Materials and Mechanical Technologies (2016 IC3MT)   2016年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Improvement in the Shape Error of the Long Workpiece in Cylindrical Traverse Grinding 査読

T. Takashima, T. Onishi, M. Sakakura, K. Ohashi, S. Tsukamoto

Proceedings of 19th International Symposium on Advances in Abrasive Technology (ISAAT2016)   307 - 313   2016年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Efficiency Investigation of Removal ofLoading Carbon Chips onWheel Surface Using DryIce Blasting 査読

Y.Ohta, S.Murakawa, K.Ohashi

Proceedings of 2016 International Conference on Machining, Materials and Mechanical Technologies (2016 IC3MT)   2016年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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円筒プランジ研削における工作物熱変形量のシミュレーション解析 -砥石軸モータの電力を用いた研削抵抗の推定- 査読

大西孝, 坂倉守昭, 和田洋平, 佐藤直樹, 大橋一仁, 塚本真也

精密工学会誌(Web)   82 ( 1 )   70 - 74   2016年1月

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掲載種別：研究論文（学術雑誌）  

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Simulation analysis of thermal deformation of a workpiece during cylindrical plunge grinding - Estimating the grinding force from the power consumption of the wheel motor

Takashi Onishi, Moriaki Sakakura, Yohci Wada, Naoki Sato, Kazuhito Ohashi, Shinya Tsukamoto

Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering   82 ( 1 )   70 - 74   2016年

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掲載種別：研究論文（学術雑誌）  

In cylindrical plunge grinding, the dimensional accuracy of a workpiece is reduced due to its thermal deformation. Therefore, it is necessary to simulate the thermal deformation of a workpiece during grinding in order to obtain high accuracy. To calculate the thermal deformation of a workpiece, we propose a new simulation method, in this method, the thermal deformation of a workpiece is calculated with the tangential grinding force that can be estimated easily from the measured power consumption of the wheel motor. Grinding experiments were carried out in several grinding conditions to verify the proposed method. Good agreement was achieved between the simulated thermal deformation of the workpiece and the experimental results in each grinding condition.

DOI： 10.2493/jjspe.82.70

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Investigation of thermal environment at grinding point of CFRP 査読

Ryosuke Tani, Kazuhito Ohashi, Mitsuo Yoshikawa, Shinichiro Kubota, Shinya Tsukamoto

Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015   E38   2015年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

In machining of CFRP, the delamination occurs at interfaces between matrix resin and carbon fibers due to the machining heat causes a deterioration of the surface quality because of poor heat resistance of matrix resin. However, the thermal environments of CFRP at the machining point haven't been made clear enough. In this study, the grinding temperature is measured in grinding of CFRP under dry and wet with vitrified bond diamond wheel. Furthermore, variations of the instantaneous heat transfer coefficients at the grinding point are calculated based on the grinding temperature data, and the effect of grinding atmosphere on the heat transfer characteristics at the grinding point is investigated experimentally.

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Dimensional error analysis for grinding of a cylindrical long workpiece 査読

Takashi Onishi, Moriaki Sakakura, Teppei Takashima, Takuya Kodani, Kazuhito Ohashi, Shinya Tsukamoto

Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2015   2015年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

In cylindrical grinding for a long workpiece, the elastic deformation of the workpiece reduces the shape accuracy because of its low stiffness. Therefore, it is very important to analyze the elastic deformation of the workpiece during grinding process. In this study, an advanced analyzing method of the shape error in case of a long workpiece was proposed. In the proposed method, the normal grinding force, which is the important factor for the elastic deformation of the workpiece, was estimated from the power consumption of the wheel motor. To evaluate the proposed analysis method, the analyzed shape error was compared with measured shape error obtained by grinding experiment.

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円筒研削における工作物熱変形量を考慮した加工システムの開発 種々の研削条件における寸法精度の検証 査読

大西孝, 坂倉守昭, 藤山泰弘, 大橋一仁, 塚本真也

砥粒加工学会誌   59 ( 10 )   594 - 599   2015年10月

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掲載種別：研究論文（学術雑誌）  

J-GLOBAL

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Control of Machining Profiles Based on Material Removal Capabilities in Cylindrical Blasting 査読

Masashi HARADA, Kazuhito OHASHI, Taketo FUKUSHIMA, Shinya TSUKAMOTO

Applied Mechanics and Materials   806   125 - 130   2015年8月

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担当区分：責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

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In-process monitoring of the machining state in superfinishing by measuring the dynamic machining forces 査読

Takashi ONISHI, Kazuhito OHASHI, Kohei HIGASHI, Yohei MORINAKA, Shinichi BANNO, Takakazu KITAGAWA, Shinya TSUKAMOTO

Applied Mechanics and Materials   806   592 - 596   2015年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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Experimental study of the causes for shape error of a large workpiece machined by surface grinding 査読

Takashi Onishi, Yoshiyuki Shimizu, Moriaki Sakakura, Makoto Harada, Yusuke Nakano, Shinsuke Baba, Kazuhito Ohashi, Shinya Tsukamoto

Applied Mechanics and Materials   806   597 - 600   2015年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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Forces during Grinding Operation and its Relation to the Dressing Cycle 査読

Anand NAMBIAR, Kou MATSUMOTO, Masaru YAMAMOTO, Kazuhito OHASHI, Shinya TSUKAMOTO

Applied Mechanics and Materials   806   78 - 83   2015年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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Effect of dry ice blasting on removal of loading carbon chips on wheel surface 査読

Kazuhito Ohashi, Sojiro Murakawa, Sinya Tsukamoto

Key Engineering Materials   656-657   220 - 225   2015年5月

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Trans Tech Publications Ltd  

© (2015) Trans Tech Publications, Switzerland. In dry grinding of hard carbon parts, the grinding performance of wheel is remarkably lost by carbon chips loading on wheel surface. The deterioration in grinding performance of wheel affects the grinding accuracy and efficiency. Generally, the grinding performance of loading wheel recovers by dressing. However, the dressing is not suitable from a viewpoint of the wheel life and the production cost because many abrasive grains having sharp edges under loading carbon chips on wheel surfaces are lost by dressing. In this study, we propose the application of dry ice blasting as a removal method of loading carbon chips. The dry ice is little influence on the working environment because of the quick sublimation of dry ice particles to carbon dioxide. In addition, the dry ice blasting might be suitable for the chip removal method because the dry ice doesn't remain on wheel surfaces after blasting without the damage of wheel surfaces. The dry ice blasting tests of resinoid bond diamond wheel surface with no grinding performance by loading carbon chips are carried out, and the effects of dry ice blasting on removal of loading carbon chips are investigated, analyzing the protrusion height of abrasive grains, the impact pressure in the dry ice blasting and so on.

DOI： 10.4028/www.scientific.net/KEM.656-657.220

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High-efficient regeneration of grinding performance using adhesive films in dry grinding of carbon 査読

Kazuhito Ohashi, Yuya Takata, Shinya Tsukamoto

Key Engineering Materials   656-657   283 - 288   2015年5月

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Trans Tech Publications Ltd  

© (2015) Trans Tech Publications, Switzerland. The grinding performance of wheel remarkably decreases by the wheel loading in dry grinding of precision hard carbon parts. When the wheel loading occurs, the dressing is carried out to remove loading chips for generation of the grinding performance. However, many abrasive grains, which have enough cutting ability under loading chips, are removed in dressing. We therefore have developed the wheel surface cleaning using adhesive films without dressing to remove loading carbon chips on wheel surfaces in our previous reports, and the cleaning could achieve the lean regeneration of grinding performance of fine grade diamond wheels. The removing ability of loading chips is improved by increasing the peeling speed of adhesive film, the pressing time of adhesive films or the number of pressing time. However the optimum cleaning condition has not been investigated. In this report, from the viewpoint of efficiency in the treatment, we therefore investigate the optimum rolling press process of adhesive film on loading disc wheel surfaces in dry grinding of carbon. The optimum treatment processes are experimentally made clear, analyzing SPa of cleaned wheel surfaces, which is one of surface roughness parameters having the correlation with the protrusion height of abrasive grains. Furthermore, the effect of the treatment on regeneration of grinding performance is experimentally verified by grinding tests of hard carbons.

DOI： 10.4028/www.scientific.net/KEM.656-657.283

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Simulation analysis and in-process measurement of the workpiece temperature distribution in large surface grinding 査読

Takashi Onishi, Moriaki Sakakura, Yusuke Nakano, Makoto Harada, Kazutoshi Kawakami, Takeshi Sakane, Kazuhito Ohashi, Shinya Tsukamoto

Key Engineering Materials   656-657   353 - 356   2015年5月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

© (2015) Trans Tech Publications, Switzerland. In surface grinding, the shape error is occurred by the thermal deformation of a ground workpiece. To finish the workpiece with high accuracy, it is necessary to understand the temperature distribution of the workpiece during grinding process. However there is no study to analyze the temperature distribution of a large workpiece during surface grinding process. In this study, an advanced simulation analysis method of the temperature distribution for a large workpiece was developed. In the developed simulation analysis method, the temperature distribution was calculated from the power consumption of the wheel motor. The power consumption can be obtained easily without any specialized equipment. To evaluate the developed simulation analysis method, in-process measurement of the temperature distribution of a large workpiece was also carried out. A large workpiece ground in this study weights about 1.3 tons. The temperature distribution was measured with thermistors mounted in many places of the ground workpiece. At the area close to the grinding surface, it was found that temperature rises immediately after the passage of grinding wheel with measuring the developed in-process measurement system. On the other hand, at the area far from the grinding point, temperature does not change quickly. The in-process measured temperature distribution agreed well with the simulated results.

DOI： 10.4028/www.scientific.net/KEM.656-657.353

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Quick on-machine measurement of ground surface finish available for mass production cylindrical grinding processes 査読

Kazuhito Ohashi, Kazuya Tan, Tomoya Ashida, Shinya Tsukamoto

International Journal of Automation Technology   9 ( 2 )   176 - 183   2015年3月

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Fuji Technology Press  

In mass production cylindrical grinding operations, the ground surface finish has never been measured in each grinding cycles because existing surface roughness testers take a relatively long time to measure surface finishes, and the introduction of a surface roughness tester in each grinding cycle would affect mass production processes. Therefore, the surface finish of all parts manufactured in a production lot is generally evaluated based on the measured results of only few parts by sampling checks. We have proposed a unique quick technique for measuring surface roughness. It uses electromotive force based on the slight frictional heat to evaluate the surface finish of cylindrical workpieces rotating on cylindrical grinding machines, and it can do this in a split second just after each grinding cycle, so it does not hamper mass production grinding processes. The proposed quick measurement system can capture the variations in surface finish in a set of repeated cylindrical grinding cycles without dressing. The possibility of accurate judging dressing time by using the quick measurement system in mass production grinding processes is shown experimentally.

DOI： 10.20965/ijat.2015.p0176

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圧粉磁心の各種特性に及ぼす加工条件の影響に関する研究 査読

上野友之, 徳岡輝和, 大橋一仁, 塚本真也

砥粒加工学会誌   58 ( 12 )   765 - 770   2014年12月

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掲載種別：研究論文（学術雑誌）  

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Development of an advanced machine control system in superfinishing the automatic determination of the suitable machining time 査読

Takashi Onishi, Kazuhito Ohashi, Kohei Higashi, Takahiro Iguchi, Shingo Yamashita, Hajime Isa, Shinya Tsukamoto

Advanced Materials Research   1017   515 - 519   2014年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

© (2014) Trans Tech Publications, Switzerland. In superfinishing, a fine surface can be obtained by transiting the machining states from the cutting action to the finishing one. In this study, we propose an advanced machine control system in superfinishing. The superfinishing stone is retracted automatically when the proposed system detects improvement in the surface roughness of the workpiece. The suitable machining time is determined by monitoring the machining force ratio measured with a force sensor. With machining experiments, we confirm that the finished surface roughness can be controlled by adjusting the threshold value of the machining force ratio to retract the superfinishing stone during machining.

DOI： 10.4028/www.scientific.net/AMR.1017.515

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Studies on grinding conditions affecting the quality of soft magnetic powder cores 査読

Tomoyuki Ueno, Terukazu Tokuoka, Takao Nishioka, Kazuhito Ohashi, Shinya Tsukamoto

Advanced Materials Research   1017   27 - 32   2014年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Trans Tech Publications Ltd  

© (2014) Trans Tech Publications, Switzerland. Soft magnetic powder cores are made by pressurizing and molding pure iron powder covered with insulation film. The material is used as a component of electro-magnetic converter parts essential for automobiles, home electric appliances and electronic equipment. The material permits downsizing and higher performance of such equipment. The recent severer requirements for performance and dimensional accuracy need a new processing technology that warrants the required level of both magnetic performance and surface quality of the material. However in general, processing - grinding - soft magnetic powder cores can give rise to degradation of magnetic performance and/or chipping or plucking of the ground surface due to the mechanical damage of the insulation film and/or loss of structural particles from the material due to the increase in grinding resistance. The authors performed basic studies for various grinding conditions and wheels that could possibly affect the quality of the material with a view to eliminating these problems. As a result, factors that affect the surface quality were identified, and a method that warrants a higher surface quality was proposed.

DOI： 10.4028/www.scientific.net/AMR.1017.27

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Study on grinding force distribution on cup type electroplated diamond wheel in face grinding of cemented carbide 査読

Takanori Fujiwara, Shinya Tsukamoto, Kazuhito Ohashi, Takashi Onishi

Advanced Materials Research   1017   9 - 14   2014年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Trans Tech Publications Ltd  

© (2014) Trans Tech Publications, Switzerland. In order to establish a high performance grinding method of cemented carbide, the grinding force distribution on the working surface of the cup type electroplated diamond grinding wheel is experimentally analyzed with the grinding force variation of face grinding, which is carried out on the narrow workpiece. The grinding force distribution is obtained by the successive difference of the grinding force variation. The grinding state becomes steady as soon as beginning of the interference of grinding wheel in workpiece, because the edge profile of workpiece is formed as same as the envelope of the grinding wheel. Main conclusions obtained in this study are as follows. In the region of the front edge of the grinding wheel, relatively large grinding force occurs, then in the region of the rear edge of the grinding wheel, the grinding force becomes smaller. In the left right-side end of the wheel, the grinding forces are larger than the center of the wheel. It is made clear that the grinding force distribution shows the peak value near the outer part of the wheel, and the peak value is larger in the center part of the wheel, on the contrary, the peak width become broad in both the left and right-side end of the wheel.

DOI： 10.4028/www.scientific.net/AMR.1017.9

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Study on the shape error in the cylindrical traverse grinding of a workpiece with high aspect ratio 査読

Takashi Onishi, Takuya Kodani, Kazuhito Ohashi, Moriaki Sakakura, Shinya Tsukamoto

Advanced Materials Research   1017   78 - 81   2014年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Trans Tech Publications Ltd  

© (2014) Trans Tech Publications, Switzerland. In cylindrical traverse grinding of a long workpiece with high aspect ratio, the shape accuracy of a workpiece worsens due to its low stiffness. In this study, the grinding force was measured during grinding process to calculate the elastic deformation of a workpiece caused by the normal grinding force. By comparing calculated elastic deformation with the measured shape error of ground workpiece, the cause for the shape error in case of grinding a long workpiece was investigated experimentally. From experimental results, it is confirmed that the main factor of the shape error of the long workpiece is its elastic deformation during grinding process.

DOI： 10.4028/www.scientific.net/AMR.1017.78

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Machining characteristics in cylindrical blasting of micro grooves and performance of herring-bone bearing 査読

Taketo Fukushima, Kazuhito Ohashi, Masahiro Fujihara, Takashi Onishi, Shinya Tsukamoto

Advanced Materials Research   1017   205 - 211   2014年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Trans Tech Publications Ltd  

© (2014) Trans Tech Publications, Switzerland. The micro patterning on a cylindrical surface is conventionally carried out by electrochemical machining, chemical etching, cutting and so on. However, there exists some problems in machining dimensional errors and tool lives. On the other hand, blasting is expected as one of micro fabrication methods and progresses to apply for machining of hard and brittle materials. The purpose of this study is to develop the micro blasting technique for patterning of micro herring-bone grooves on spindle surfaces of the fluid dynamic bearings. Then, machining characteristics in blasting of rotating workpieces are experimentally investigated, analyzing stock removals, burr heights and groove shapes. In addition, micro herring-bone grooves are patterned on spindle surfaces by blasting and the performance of herring-bone bearings are evaluated. The herring-bone bearings with micro grooves patterned on a spindle surface by blasting have enough performance, compared with conventional ones.

DOI： 10.4028/www.scientific.net/AMR.1017.205

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Deburring of Needle Point Using Slurry Flow with Cavitation 査読

Kazuhito Ohashi, Yuto Maeda, Nan Lu, Shinya Tsukamoto

Proceedings of the 15th International Conference on Precision Engineering   657 - 660   2014年7月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Simulation Analysis of Thermal Deformation of a Workpiece during Cylindrical Plunge Grinding -Estimating the Grinding Force from the Power Consumption of the Wheel Motor- 査読

Takashi Onishi, Moriaki Sakakura, Yohei Wada, Naoki Sato, Kazuhito Ohashi, Shinya Tsukamoto

Proceedings of the 15th International Conference on Precision Engineering   157 - 160   2014年7月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Rapid on-machine measurement of surface finish in repeated cylindrical grinding cycles

K. Ohashi, K. Tan, T. Ashida, S. Tsukamoto

Conference Proceedings - 14th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2014   2   311 - 314   2014年6月

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

The surface finish is one of important evaluation items of grinding results as well as the form and size accuracy or the surface quality in grinding. The surface finish of the ground surface has never been measured after each grinding cycle because the measurement of the surface finish needs relatively a long duration by existing surface roughness testers and applications of surface roughness tester in each grinding cycle would affect mass-production processes. We propose a rapid on-machine measurement technique of the surface finish, which can check the surface finish of cylindrical workpieces rotating on cylindrical grinding machines in a split second just after each grinding cycle, and the usefulness without hampering mass-production grinding processes is shown in this study.

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CFRPの研削特性に及ぼす加工雰囲気の影響(水溶性クーラントおよび液体窒素供給の効果) 査読

大橋一仁, 前野隼人, 藤原良平, 窪田真一郎, 吉川満雄, 塚本真也

日本機械学会論文集 C編(Web)   79 ( 808 )   5068 - 5078   2013年12月

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掲載種別：研究論文（学術雑誌）  

J-GLOBAL

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In-Process Monitoring of Machining State in Superfinishing 査読

Takashi ONISHI, Kazuhito OHASHI, Kohei HIGASHI, Shingo YAMASHITA, Takashiro IGUCHI, Shinya TSUKAMOTO

Proceedings of The 7th International Conference on Leading Edge Manufacturing in 21st Century   89 - 92   2013年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Investigation of Grinding Temperature of Carbon Fiber Reinforced Plastics 査読

Ryohei FUJIHARA, Kazuhito OHASHI, Mitsuo YOSHIKAWA, Shinichiro KUBOTA, Takashi ONISHI, Shinya TSUKAMOTO

Proceedings of The 7th International Conference on Leading Edge Manufacturing in 21st Century   103 - 106   2013年11月

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担当区分：責任著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Study on the restraint method of thermal deformation in the machine tools 査読

Kyosuke Umezu, Kazuhito Ohashi, Shinya Tsukamoto

Advanced Materials Research   797   603 - 608   2013年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

In the NC machine tools for automatic mass production processing lines, it is demanded that high stable machining accuracy is maintained for a long time. The main factor of deterioration in machining accuracy depends on the thermal deformation of machine tool, and the measures are one of the most important issues in the machine tool design. The thermal deformation is practically estimated by the temperature changing state of machine tools based on obtained data of their thermal deformation chracteristics. The estimation accuracy of thermal deformation depends on the thermometry points of machine tool greatly. This study describes an approach to the most suitable thermometry points in machine tool to determine the effective thermal deformation measures experimentally. As a result, the existence of points where the temperature of components changed with relation to thermal deformation very closely was confirmed. © (2013) Trans Tech Publications, Switzerland.

DOI： 10.4028/www.scientific.net/AMR.797.603

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Grinding system reducing the influence of thermal deformation of workpiece in cylindrical grinding 査読

Takashi Onishi, Moriaki Sakakura, Naoki Sato, Takuya Kodani, Kazuhito Ohashi, Shinya Tsukamoto

Advanced Materials Research   797   609 - 612   2013年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：TRANS TECH PUBLICATIONS LTD  

In cylindrical grinding, a sizing device is generally used to obtain the required dimension. However, the dimensional error can be caused by the thermal deformation of the workpiece even if grinding machine is controlled with the sizing device. To solve this problem, it is necessary to develop the grinding system that can consider the thermal deformation of the workpiece during grinding process. In this study, an advanced grinding system was developed, which can predict the net stock removal of ground workpiece immediately. The grinding experiment is carried out to verify the developed system. © (2013) Trans Tech Publications, Switzerland.

DOI： 10.4028/www.scientific.net/AMR.797.609

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Influence of grinding atmosphere on grinding characteristics of CFRP (effect of soluble coolant or liquid nitrogen supply)

Kazuhito Ohashi, Hayato Maeno, Ryohei Fujihara, Shinichirou Kubota, Mitsuo Yoshikawa, Shinya Tsukamoto

Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   79 ( 808 )   5068 - 5078   2013年

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掲載種別：研究論文（学術雑誌）  

CFRP (Carbon Fiber Reinforced Plastics), which is increasingly applied to airplanes, automobiles, production equipment for electronic device, and so on, is machined after molding process. Grinding is often used for edge finishing of CFRP parts. This paper deals with the influence of grinding atmosphere on grinding characteristics of CFRP by the experimental investigation of ground surface characteristics, surface finish, grinding force, grinding temperature, etc. in surface grinding of unidirectional CFRP using a vitrified bond diamond wheel with the water soluble coolant and the liquid nitrogen in addition to dry grinding. The grinding temperature has been measured by a developed thermocouple system using carbon fibers being made up CFRP and a constantan wire setting between CFRP specimens. The grinding temperature at wheel contact area on CFRP is higher than the glass-transition temperature of CFRP at larger setting wheel depth of cut. The wet grinding prevents in worsening ground surface of CFRP and increasing grinding force that occur in dry grinding of CFRP. The liquid nitrogen makes some effect on prevention in wheel loading and delamination of carbon fibers in dry grinding of CFRP, however the grinding force supplying liquid nitrogen becomes larger than that in dry grinding because of an increase in hardness of CFRP by freeze up. The bending strength of ground CFRP, which suggests the scale of affected layer, is improved by supplying the water soluble coolant and the liquid nitrogen in grinding process. © 2013 The Japan Society of Mechanical Engineers.

DOI： 10.1299/kikaic.79.5068

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Fundamental study on setting of diamond abrasive grains using electrostatic force for single-layered metal bond wheel 査読

Ohashi Kazuhito, Kawasuji Yusaku, Shinji Yoshifumi, Samejima Yoshitaka, Ogawa Soma, Tsukamoto Shinya

Advanced Materials Research   565   40 - 45   2012年9月

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：TRANS TECH PUBLICATIONS LTD  

Single-layered metal bond diamond wheels are useful to high efficient grinding of difficult-to-grind materials because of the high gripping force of abrasive grains and the controllable grain density. In this paper, fundamental information are obtained for an application of electrostatic force to setting of diamond grains into pasted metal bond slurry layer on wheel surface, investigating experimentally jumping phenomenon of diamond grains in an electrostatic field between a electrode plate and metal bond slurry layer. The SD grains and the SDC grains coated with Ti are selected. SDC grains jump into a metal bond layer as quick as making an electrostatic field, however SD grains jump with short time lags. The setting rate of SDC grains is larger than that of SD grains, and setting position accuracy of SDC grain array is better than SD grain array. The possibility of setting abrasive grains into single-layered metal bond diamond wheel surface using electrostatic force is obtained and SDC grains are suitable to the proposed abrasive setting method. © (2012) Trans Tech Publications, Switzerland.

DOI： 10.4028/www.scientific.net/AMR.565.40

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Application of cavitation aided abrasive machining to manufacture of micro air vents on injection molds 査読

N. Lu, K. Ohashi, A. Hirashima, A. Shimizu, S. Tsukamoto

Advanced Materials Research   565   597 - 602   2012年9月

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担当区分：責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：TRANS TECH PUBLICATIONS LTD  

The purpose of this study is a practical application of the cavitation aided abrasive machining (CAAM). This study shows the machining effect of the precision abrasive machining on injection molds using the cavitation in a suction flow of slurry, which can easily finish to a fine surface by a simple apparatus. The cavitation occurred above the workpiece surface downstream of the restrictor tip because of the rapid decompression and then the abrasive grains in the water interfere with the workpiece surface by the cavitation impact. In this report, the possibility of application of the cavitation aided abrasive machining to the precision manufacturing of micro air vents on the rib of injection molds are generated by using masks of a certain thickness that are made on a special masking equipment, and the machining characteristics of micro air vents are investigated by analyzing the depth of micro grooves and the surface finish in machining of injection molds. When the depth of the micro grooves is approximately 1μm in the machining of 30 minutes, the manufacture of molding parts without burrs or residual voids is carried out by CAAM. © (2012) Trans Tech Publications, Switzerland.

DOI： 10.4028/www.scientific.net/AMR.565.597

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円筒ブラスト加工に関する基礎的研究 査読

大橋 一仁, 曽我部 英介, 魯 楠

砥粒加工学会誌   56 ( 9 )   626 - 631   2012年9月

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担当区分：筆頭著者,　責任著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：砥粒加工学会  

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Simulation analysis of temperature distribution and thermal deformation in a workpiece during cylindrical grinding 査読

Takashi Onishi, Moriaki Sakakura, Yohei Wada, Shonan Song, Naoki Sato, Kazuhito Ohashi, Shinya Tsukamoto

10th International Conference on Progress of Machining Technology, ICPMT 2012   104 - 108   2012年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：JAPAN SOC PRECISION ENGINEERING-JSPE  

In cylindrical plunge grinding, thermal deformation of a workpiece can cause its dimensional error. Therefore, it is necessary to investigate thermal deformation process of the workpiece based on the temperature distribution during grinding. To calculate the thermal deformation of the workpiece, advanced new simulation method is proposed in this study. The temperature distribution is calculated with the grinding energy that can be estimated from the measured power of grinding wheel motor. The results of these simulations were compared to experimental results obtained with in-process measurement system of internal temperatures and thermal deformation of the workpiece. Good agreement was achieved between the simulated thermal deformation and the experimental one.

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Grinding performance using alkaline electrolyzed and high-frequency reduced water 査読

Iba Shinichi, Ohashi Kazuhito, Honiden Kazuyuki, Kitajima Iwao, Shinya Tsukamoto

Advanced Materials Research   565   16 - 21   2012年9月

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担当区分：責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：TRANS TECH PUBLICATIONS LTD  

The purpose of this study is to develop the environment-friendly coolant. Cylindrical plunge grinding tests are carried out using alkaline electrolyzed water, high-frequency reduced water and alkali-reduced water as coolant. Most effective coolant is brought out in comparison with surface roughness, grinding force and workpiece surface temperature. Moreover, elemental analyses and measurements of contact angle of treated water are carried out in order to clarify the effect on grinding performance. Furthermore, elemental analyses and observation of evaporation residues in treated water are also carried out. As a result, grinding performance using alkali-reduced water is better than that using alkaline electrolyzed water or high-frequency reduced water. © (2012) Trans Tech Publications, Switzerland.

DOI： 10.4028/www.scientific.net/AMR.565.16

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Temperature distribution in a workpiece during cylindrical plunge grinding 査読

Moriaki Sakakura, Takashi Ohnishi, Takayuki Shinoda, Kazuhito Ohashi, Shinya Tsukamoto, Ichiro Inasaki

Production Engineering Research and Development   6 ( 2 )   149 - 155   2012年4月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

In cylindrical plunge grinding, a large amount of heat flows into the workpiece continuously, accumulates and remains even after the process, which causes dimensional error. Therefore it is necessary to investigate the temperature distribution in the workpiece during grinding and analyze the influence of grinding heat on the dimension. Such an investigation has not been done enough, because the technology to measure the temperature distribution in the rotating workpiece has not matured. Considering such background, an in-process measuring system has been developed, which makes it possible to detect the temperature distribution in a wide range from the outer surface to the inside of the rotating workpiece. The system consists of small temperature sensors which are embedded into the workpiece, a micro computer attached on the workpiece which acquires the data from the sensors and transmits to a personal computer by a wireless communication device. Furthermore the contact type thermocouple which enables to measure the rotating surface temperature is added to the system. Measurement experiments revealed that the grinding heat conducts from the workpiece surface toward the center, accumulates, and remains in the workpiece even after the process. Heat conduction simulation was also performed. Good agreement was achieved between the simulated temperatures and experimental measurements. © 2012 German Academic Society for Production Engineering (WGP).

DOI： 10.1007/s11740-012-0372-z

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極薄板の平面研削による反り発生メカニズムの解明 査読

大西孝, 湯川知厚, 大橋一仁, 坂倉守昭, 塚本真也

砥粒加工学会誌   56 ( 1 )   29 - 33   2012年1月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：砥粒加工学会  

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Improvement of accuracy in internal grinding with shape modification on high aspect ratio wheel 査読

Takashi Onishi, Kazuhito Ohashi, Yuya Yamamoto, Moriaki Sakakura, Shinya Tsukamoto

Proceedings of the 6th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2011   2011年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

In an internal grinding, the stiffness of wheel spindle is not so high because of its small diameter. So the elastic deformation of wheel spindle becomes large. In this reason, the dimensional accuracy of workpiece worsens in internal grinding with a high aspect-ratio. To solve this problem, in this study, the shape of the grinding wheel is modified by the single crystal diamond tool. A grinding test with the formed wheel is carried out and the shape of the workpiece is measured. It is conformed that the shape error of the workpiece ground with the formed wheel is significantly improved.

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Machining characteristics of cylindrical blasting and application to micro patterning 査読

E. Sogabe, K. Ohashi, N. Lu, M. Fujiwara, T. Onishi, S. Tsukamoto

Advanced Materials Research   325   570 - 575   2011年9月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

Micro patterning on cylindrical surface, e.g. dynamic pressure bearings, is mainly carried out by chemical etching. However, there exist environmental problems in the waste etchant processing and safety ones in works using toxic chemical liquids. On the other hands, blasting is expected as one of micro patterning methods and comes into use for not only surface modification but also machining of hard and brittle materials. The purpose of this study is to develop the micro blasting technique for cylindrical parts. Therefore, machining characteristics in blasting of rotating workpieces are experimentally investigated, analyzing the stock removal and the surface roughness. In addition, the patterning of micro herringbone grooves are carried out on spindle surfaces based on the obtained characteristics. © (2011) Trans Tech Publications, Switzerland.

DOI： 10.4028/www.scientific.net/AMR.325.570

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円筒プランジ研削における工作物表面温度のインプロセス測定結果を用いた熱変形量の予測システムの開発 査読

大西孝, 坂倉守昭, 佐伯哲弥, 谷村賢彦, 和田洋平, 大橋一仁, 塚本真也

砥粒加工学会誌   55 ( 7 )   418 - 423   2011年7月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：砥粒加工学会  

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カーボンの乾式研削における目づまり砥石のドレスレス切れ味回復法 第2報:目づまり砥石の切れ味回復効果 査読

大橋一仁, 大西孝, 住元洋輔, 藤田裕也, 塚本真也

砥粒加工学会誌   55 ( 5 )   284 - 289   2011年5月

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担当区分：筆頭著者,　責任著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：砥粒加工学会  

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円筒プランジ研削における工作物温度分布および工作物熱変形量のシミュレーションとインプロセス測定 査読

大西孝, 坂倉守昭, 篠田崇幸, 和田洋平, 大橋一仁, 塚本真也

砥粒加工学会誌   55 ( 3 )   161 - 166   2011年3月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：社団法人 砥粒加工学会  

円筒プランジ研削では，加工中に発生する研削熱の多くが工作物内部へ流入することにより工作物が熱膨張し，加工終了後の熱の流出に伴い工作物が収縮する．これらの工作物熱変形が，工作物の仕上げ寸法精度の低下を引き起こす大きな要因となっている．そのため，円筒プランジ研削において高い寸法精度を実現するためには，加工プロセスにおける工作物の熱変形挙動をリアルタイムで把握することが重要であり，熱変形に影響を及ぼす工作物全体の温度分布に注目する必要がある．そこで本研究では，円筒プランジ研削を対象に，工作物温度分布および工作物熱変形量を算出するシミュレーション解析モデルを提案し，加工プロセスにおける温度分布の時間変化および熱変形挙動を解明する．また，新たに開発した工作物温度分布の測定システムを使用して工作物温度分布のインプロセス測定を行うと同時に，工作物熱変形量をインプロセス測定することにより，研削熱が工作物に及ぼす影響を実験的に明らかにし，シミュレーション解析モデルの妥当性を示す．

DOI： 10.11420/jsat.55.161

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カーボンの乾式研削における目づまり砥石のドレスレス切れ味回復法 第1報:粘着テープを用いた切りくず除去法の提案と除去特性 査読

大西孝, 大橋一仁, 藤田裕也, 住元洋輔, 塚本真也

砥粒加工学会誌   55 ( 2 )   102 - 107   2011年2月

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担当区分：責任著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：社団法人 砥粒加工学会  

カーボンの乾式研削においては，砥石の目づまりにより短時間で研削性能が低下するため，ドレッシングを頻繁に行う必要がある．しかし，ドレッシングではカーボンの切りくずのみならず，切れ味を失っていない砥粒も除去されるため，無用な砥石の消耗を招く．そこで，本研究においては，新たに粘着テープを目づまり状態の砥石表面に押し付け，はく離することで主に目づまりした切りくずを除去するドレスレス切れ味回復法を考案した．本報においては，切りくずの除去過程を明らかにするとともに，粘着テープの砥石に対する押付け力，はく離速度，転圧ローラの硬度が切りくず除去性能に与える影響を実験的に検討した．

DOI： 10.11420/jsat.55.102

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Approaches to in-process measurement of surface roughness in cylindrical grinding 査読

T. Tachikawa, K. Ohashi, M. Tago, S. Tsukamoto

Advanced Materials Research   126-128   684 - 689   2010年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：TRANS TECH PUBLICATIONS LTD  

The purpose of this study is to develop an in-process of measurement technique of surface roughness using thermoelectric effect in cylindrical grinding. The electromotive force (EMF) generates depend on the surface roughness of workpiece and the variation of workpiece temperature when the sensor with thermocouple wires rubs on the workpiece surface in grinding process. In this paper, the in-process measurement technique of surface roughness in cylindrical plunge grinding is proposed, conceiving the cancellation of the EMF caused by the variation of workpiece temperature in the sensor output. Also a new type in-process sensor was developed for high accuracy to overcome the problem which was clarified in the cancellation method of the influence of workpiece temperature at a basic sensor © (2010) Trans Tech Publications, Switzerland.

DOI： 10.4028/www.scientific.net/AMR.126-128.684

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Workpiece Temperature Distribution during Cylindrical Plunge Grinding 査読

M.Sakakura, T.Shinoda, S.Tsukamoto, K.Ohashi, I.Inasaki

Proceedings of 7th CIRP International Conference on Intelligent Computation in Manufacturing Engineering   2010年6月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Rapid On-machine Measurement of Surface Finish for Cylindrically Grinding Workpiece

K. Ohashi, M. Tago, T. Tachikawa, S. Tsukamoto

Proceedings of The 24th Annual ASPE Meeting   1 - 4   2009年10月

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掲載種別：研究論文（国際会議プロシーディングス）  

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Improvement of grindactivity by dressless wheel treatment in dry grinding of carbon 査読

K. Ohashi, Y. Sumimoto, Y. Fujita, S. Tsukamoto

Advanced Materials Research   76-78   94 - 100   2009年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：TRANS TECH PUBLICATIONS LTD  

The grindactivity of wheel is remarkably lost by the loading of wheel surface in dry grinding of hard carbon parts. In this report, we propose the dressless wheel treatment, in which loading chips are removed with adhesive tape, and experimentally investigate its effect on recovery of grindactivity, analyzing the stock removal, the grinding current and the surface roughness in repeat of grinding cycle with treated and non-treated wheels. The removal and finishing performances of loaded wheel are recovered by the dressless wheel treatment.

DOI： 10.4028/www.scientific.net/AMR.76-78.94

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シュー支持による小径深孔内面加工の高精度ツルーイングに関する基礎的研究 第1報:クイルの振れ挙動 査読

長谷川裕之, 小山雄治, 三宅隆介, 大橋一仁, 塚本真也, 加納史義, 森田浩充, 黒江栄光

砥粒加工学会誌   53 ( 9 )   566 - 571   2009年9月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：砥粒加工学会  

DOI： 10.11420/jsat.53.566

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環境調和型加工法の基礎的研究-各種低公害加工法の検討と半水中研削法の有効性検証- 査読

西川尚宏, 塚本真也, 大橋一仁, 中島利勝, 井山俊郎, 水野雅裕, 大田康史, 久保孝典

環境技術   38 ( 6 )   415 - 423   2009年6月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：環境技術学会  

現在，生産現場において，廃液処理の際，大きな環境負荷をもたらす加工液（切削液・研削液）の使用削減が渇望されている．本研究では円筒研削において従来の研削液を用いた湿式研削法の代替として，圧縮空気を用いたブロー研削法，少量の水を加工液として使用するミスト・ノーミスト研削法，従来加工より大幅に加工液供給量を減らした半水中研削法を提案し，冷却性・潤滑性といった加工性能を評価した．ブロー研削法は空気供給量90L/min程度では有効な潤滑性・冷却効果はなく，ミスト研削法は若干の冷却性とプランジ速度が小さい場合での潤滑性が確認された．一方，半水中研削法において少量の液供給を併用することにより湿式研削法に匹敵する潤滑性が得られた．さらに，冷却性においても給液量が2.04L/minで同等になると推計される．工作物への冷却性が大きく，発熱の多い加工に対して適用を期待できる．また，冷却性改良について言及した．Reducing the use of machining fluid such as cutting oil and grinding fluid，which cause heavy environmental load in waste fluid treatment, is desired in industrial plant processing. In this investigation，new grinding methods such as the blow grinding method using compressed air，the mist / no mist grinding method using small quantities of water，and the half underwater grinding method，all of which greatly decrease the amount of the grinding fluid supply，are proposed as a substitution of the wet grinding method， which uses a large quantity of conventional grinding fluid in cylindrical grinding. Cooling ability and lubricity as grinding performance of these methods were evaluated. The blow grinding method obtained neither eective lubricity nor the cooling effect with an air supply rate of approximately 90ℓ/min. In the mist grinding method，partial cooling ability was confirmed，and the lubricity was confirmed while plunge speed is small. On the other hand，the half underwater grinding method achieved lubricity equal to the wet grinding method by combining a small amount of fluid supply. ln addition，it is estimated that cooling ability of the half underwater method isequal to that of the wet grinding method considering a fluid supply rate of 2.04ℓ/min. In conclusion，because of the large cooling ability for workpieces，it is expected that the half underwater grinding method can be applied to highly exothermic machining.

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Study on cavitation aided abrasive machining on glass 査読

Kazuhito Ohashi, Shinya Tsukamoto, Toshikatsu Nakajima

Key Engineering Materials   407-408   654 - 657   2009年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：TRANS TECH PUBLICATIONS LTD  

The purpose of this study is to develop the cavitation aided abrasive machining which makes effective use of cavitation occurring in suction flow of slurry for fine machining. In this paper,a fundamental machining phenomenon of glass using the cavitation suction flow is clarified and machining characteristics are experimentally investigated by the observation of machined surface and surface roughness, stock removal and cavitation impact. Abrasive grains impinge on a workpiece surface to physically remove work material and generate fine surface in the machining. Then it can finish the polished glass surface of 9.3nmRz down to about 5.0nmRz by using abrasives of WA 4000. © (2009) Trans Tech Publications, Switzerland.

DOI： 10.4028/www.scientific.net/KEM.407-408.654

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Fundamental study on the precision abrasive machining using a cavitation in reversing suction flow 査読

Kazuhito Ohashi, Rongjun Wang, Hiroyuki Hasegawa, Shinya Tsukamoto

Key Engineering Materials   389-390   223 - 228   2009年1月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：TRANS TECH PUBLICATIONS LTD  

The purpose of this study is to make clear the machining effect of the precision abrasive machining using the cavitation in reversing suction flow, which can easily finish to a fine surface by a simple apparatus. The machining fluid including loose micro abrasive grains is sucked by a pump, and the cavitation occurs ahead of the nozzle fixed in the suction chamber because of the rapid decrease of pressure of machining fluid. We use the cavitation impact to make the abrasive grains to interfere with the workpiece surface. In this report, the possibility of application of the new abrasive machining to the precision manufacturing is investigated by analyzing the behavior of machining fluid, the stock removal and the surface finish in machining of glass. The cavitation impact is strongest under the nozzle clearance of 20mm and restriction nozzle diameter of 4mm. Glass surface is finished up to several nanometers in Ry with slight stock removal by the proposed abrasive machining.

DOI： 10.4028/0-87849-364-6.223

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The possibility of dressless restoration of grindactivity in dry grinding of carbon 査読

K. Ohashi, Y. Sumimoto, Y. Fujita, H. Hasegawa, S. Tsukamoto

Key Engineering Materials   389-390   356 - 361   2009年1月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：TRANS TECH PUBLICATIONS LTD  

The grinding performance of wheel remarkably decreases by the loading of wheel surface in dry grinding of hard carbon parts. In this report, we propose the removal method of loaded carbon chips in which an adhesive tape is removed with carbon chips after putting on a loaded wheel surface by an elastic roller with the setting load . The removal characteristics are experimentally investigated by analyzing the projecting height of abrasive grains, removal force of adhesive tape and so on. The removal method results in the enough projecting height of abrasive grain.

DOI： 10.4028/0-87849-364-6.356

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熱電効果を利用した円筒研削面粗さの高速オンマシン測定法 査読

大橋一仁, 永田龍, 塚本真也, 長谷川裕之

砥粒加工学会誌   52 ( 12 )   724 - 729   2008年12月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：砥粒加工学会  

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クーラント汚染度とワーク表面品位との相関研究 第1報:スラッジおよび砥粒のスクラッチ形成に及ぼす影響 査読

長谷川裕之, 岡本敏宏, 千葉陽介, 大橋一仁, 塚本真也, 西澤信也, 藤田能裕, 宮川和彦

砥粒加工学会誌   52 ( 10 )   589 - 594   2008年10月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：社団法人 砥粒加工学会  

本研究では，表面精度を決定づける新たな要因として，研削時に生成されるスラッジと砥石から脱落する砥粒が工作物の表面性状を損なわせるとの仮定に基づき，スラッジおよび砥粒により意図的に汚染させた研削液と加工後の工作物表面品位との相関を明らかにした．特に，生産現場において問題となるスクラッチに焦点を絞り，スラッジ濃度または砥粒濃度に対するスクラッチ個数を体系的にまとめた．実験結果からスラッジによる汚染に伴い，スクラッチ個数は単調に増加し，スラッジ濃度50×10⁷/lにおいて一定値となった．一方，砥粒はスクラッチ発生数に支配的に関与し，スラッジに比べ40倍以上の影響を与えた．さらに，光学顕微鏡による観察結果から，研削液の汚染により発生するスクラッチ形状は2種類に分類され，スラッジによる汚染では直線型，砥粒による汚染では曲線型が主に形成された．

DOI： 10.11420/jsat.52.589

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エンドミル切削における電気防錆加工法の開発-切削加工における水のみを使用した環境調和型加工法- 査読

西川尚宏, 塚本真也, 大橋一仁, 三宅隆介, 井山俊郎, 水野雅裕

環境技術   37 ( 4 )   274 - 281   2008年4月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：環境技術学会  

機械加工現場において，切削油や水溶性切削油剤といった加工液は作業者に健康被害を及ぼす懸念があり，廃棄の際に莫大な廃液処理コストと環境負荷を生じている.本研究では加工液に無害な水のみを使用し，防錆剤を用いず工作物に致命的な錆を微小電流で防ぐ電気防錆加工法を生産現場で多用される切削加工に応用し，実験的にその効果を検討した適切な電極組み合わせと定電流制御により安定した電流供給を実現し，最長3時間の防錆を達成した.また，有効防錆領域を解明し1時間の防錆電力は0.0122Wと省電力で使用上十分な防錆効果があり，その際，危惧される工作物の水素脆性を検証し実用上安全であることが示された.さらに，工作物を水中に浸漬して切削する本加工法と従来加工法との切削性能を比較し軽切削において切削油には劣るが水溶性切削油剤より表面粗さが改善する結果を得た.本加工法は新しい環境調和型加工法として期待性があるといえる.In a machining plant, cutting fluids, such as water immiscible or miscible types are in danger of harming an operator's health. Moreover, infinite cost and heavy environmental loading have arisen as issues for waste fluid disposal treatment. The electric rust prevention machining method has prevented the fatal rust of work piecesby supplying a slight electric current while using only harmless water and non-using rust preventive agent. The application of this method to the end mill cutting is being experimentally investigated. A stable electric current supply is realized by using a constant current control and an appropriate electrode combination. In addition, this method achieved rust prevention of work pieces for 3 hours. Moreover, an effective rustprevention time and current area of 1 hour is clarified and rust prevention power is indicated as a low O.0122W. Afterwards, it was evaluated that hydrogen embrittlement of work piece was safe in practical use. Subsequently, cutting performance using this method as machining on a work piece dipped in water is compared with conventional cutting methods. When performing light cutting, this method is inferior to a waterimmiscible cutting fluid, however surface roughness is improved more than with a water miscible cutting fluid.Therefore. this method is considered to have potential as a the new environmental harmonic machiningme出.od

DOI： 10.5956/jriet.37.274

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吸引キャビテーション援用砥粒加工を用いたマイクロパターニング 査読

大橋一仁, WANG Rongjun, 松岡紘一, 田口雅也, 塚本真也

砥粒加工学会誌   52 ( 3 )   158 - 163   2008年3月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：砥粒加工学会  

DOI： 10.11420/jsat.52.158

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Characterization of quaternary (Cr,Al)N-based films synthesized by the cathodic arc method 査読

H. Hasegawa, K. Ohashi, S. Tsukamoto, T. Sato, T. Suzuki

Surface and Coatings Technology   202 ( 4-7 )   786 - 789   2007年12月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE SA  

Chromium aluminum nitride based films were synthesized by the cathodic arc method using an alloy cathode, and annealed in a vacuum chamber at 800, 900 and 1000 °C. XRD analyses showed that the (Cr,Al,Si,Y)N films maintained a cubic phase up to 800 °C, but changed to a mixed phase after post-annealing at temperatures of more than 900 °C. Cr2N segregation and partial transformation from a cubic to hexagonal phase at over 800 °C were confirmed for (Cr,Al,Si)N and (Cr,Al,Y)N. The lattice parameters for cubic (Cr,Al,Si)N and (Cr,Al,Y)N (0.416 nm) decreased to 0.411 nm and 0.413 nm, respectively, after annealing at 900 °C. The lattice parameter for (Cr,Al,Si,Y)N changed from 0.417 nm to 0.413 nm after annealing at 900 °C. The microhardness of (Cr,Al,Y)N was kept constant at 800 °C, whereas that of (Cr,Al,Si)N and (Cr,Al,Si,Y)N increased slightly between 800 and 900 °C. In this study, hardness, microstructure and lattice parameters were analyzed and discussed as a function of the annealing temperature. © 2007 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.surfcoat.2007.05.050

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Novel On-Machine Measurement of Surface Finish with Thermoelectric Effect for Rotating Ground Workpiece 査読

K. OHASHI, R. NAGATA, S. TSUKAMOTO, H. HASEGAWA

Advance in Abrasive Technology   ( X )   519 - 525   2007年9月

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Improvement of Machining Accuracy in Micro Cylindrical Traverse Grinding 査読

K. Ohashi, G. He, S.Tsukamoto

Key Engineering Materials   329   39 - 44   2007年9月

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.4028/0-87849-416-2.39

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日本語力の徹底訓練による教育法 査読

塚本真也, 大橋一仁, 東辻浩夫

工学教育   55 ( 1 )   2007年

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掲載種別：研究論文（学術雑誌）  

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Grinding process for the finest surface finish with super-soft grade resinoid bond wheel 査読

Ohashi Kazuhito, Tsukamoto Shinya, Nakajima Toshikatsu

ICPMT2006 - Progress of Machining Technology - Proceedings of the 8th International Conference on Progress of Machining Technology   417 - 420   2006年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：JAPAN SOC PRECISION ENGINEERING-JSPE  

The polyvinyl alcohol (PVA) bond wheel is a typical elastic wheel using in precision finishing of a cylinder, a roll, a magnetic head and so on, but it can't allow using grinding fluid because of its too poor water resistance. So the super-soft grade resinoid wheel, of which the bonding material is prepared by the interaction of PVA and thermosetting plastics, is developed. The surface roughness decreases down to the minimum just after the start of plunge grinding. In this paper, the grinding method with the resinoid bond wheel is proposed to achieve the finest surface finish of workpiece, based on such minimizing phenomenon of surface roughness. Main conclusions obtained in this paper are as follows: (1) The finest surface finish can be obtained by spark-out grinding operation just at the right moment when the surface roughness of workpiece decreases down to the minimum. (2) The surface finish by this grinding operation decreases with decreasing the initial surface roughness, but the shrinkage in surface roughness during the spark-out grinding process increases with increasing initial surface roughness. (3) The repetition of this grinding operation without dressing makes the surface finish smaller than that by a general grinding operation with larger depth of cut before spark-out grinding.

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Fundamental study on a cavitation aided machining 査読

Kazuhito Ohashi, Rongjun Wang, Shinya Tsukamoto, Toshikatsu Nakajima

ICPMT2006 - Progress of Machining Technology - Proceedings of the 8th International Conference on Progress of Machining Technology   405 - 408   2006年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：JAPAN SOC PRECISION ENGINEERING-JSPE  

The purpose of this study is to make clear the machining effect of a new technique of cavitation aided machining (CAM) by which the workpiece can be easily finished in a fine surface with a very simple apparatus. The machining fluid, that is mixture of abrasive grains and water as carrier, is sucked by a pump, and the flow of machining fluid is controlled by a restrictor. Then the cavitation phenomenon locally occurs by the rapid decrease of carrier pressure, so that abrasive grains in the mixed fluid come to interfere on the surface. In this report, the possibility of applying CAM to precision machining is investigated by analyzing the surface finish, the stock removal and the behavior of carrier. Main conclusions obtained in this paper are as follows: (1) Action of abrasive grains onto the surface is induced by very fine cavitation impact caused by cavitation occurred in the lower part from the center of restrictor in a flow. (2) At 2.0mm in clearance, the cavitation impact of carrier becomes strongest, so that the stock removal and the decrease of surface roughness have maximum. (3) CAM can be applied to an ultraprecision machining by which the surface finish of Al-Mg alloy is improved from 7.3nm Ra with ultraprecision cutting down to the surface finish at 6.6nm Ra.

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深穴内面オシレーション研削における砥石と工作物の熱変形挙動 査読

大橋一仁, HE Guifu, 小野祐一郎, 塚本真也, 中島利勝

砥粒加工学会誌   50 ( 7 )   409 - 414   2006年7月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：社団法人 砥粒加工学会  

深穴内面研削では，工作物に大きなテーパ形状と中凹形状が形成され，これらの低減が形状精度に関する重要課題になっており，その要因の一つに，熱的に過酷な研削環境による工作物の熱変形が挙げられる．本研究では，深穴内面オシレーション研削において工作物の形状精度に影響を及ぼす砥石ならびに工作物の熱変形挙動を実験的に解明している．工作物の熱変形量は，工作物端部から中央部になるほど増大するが，チャック保持側端部の熱変形量は残留しやすく，このような工作物の熱変形は冷却に伴って工作物断面のテーパ

DOI： 10.11420/jsat.50.409

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マイクロ円筒トラバース研削の高精度化に関する研究 査読

大橋一仁, HE Guifu, 光尾崇, 吉原啓太, 大西孝, 塚本真也

砥粒加工学会誌   50 ( 6 )   334 - 339   2006年6月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：社団法人 砥粒加工学会  

マイクロ円筒部品の研削加工においては，工作物径が微少であることによって剛性が極端に小さくなるため，加工中の研削抵抗による工作物の弾性変形が通常の研削の場合に比べて相対的に大きくなり，加工能率や加工精度に大きく影響するようになる．工作物に作用する研削抵抗の主体を占めるのは砥粒の切削方向に対する法線分力であるが，これを工作物剛性の高い方向に作用させることで工作物の変形を抑制できることが予測される．そこで本研究では，マイクロ円筒トラバース研削に直交軸方式を提案し，幾何学的切りくず形状などの解析によって従来のマクロサイズの円筒研削に多用される平行軸方式と比較検討している．さらに，試作したマイクロ円筒研削盤を用いてトラバース研削実験を行った結果，表面粗さや形状精度において直交軸方式が平行軸方式に比べて良好であることを明らかにしている．

DOI： 10.11420/jsat.50.334

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内面研削における電気防錆加工法の開発-加工液に水のみを使用するエコマシニングの提案- 査読

西川尚宏, 大橋一仁, 吉原啓太, 塚本真也

環境技術   35 ( 6 )   452 - 459   2006年6月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：環境技術学会  

DOI： 10.5956/jriet.35.452

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電気防錆水中保管法の開発-防錆剤・油剤を使わない水による金属部品保管法の提唱- 査読

西川尚宏, 大橋一仁, 須藤将仁, 塚本真也

環境技術   35 ( 5 )   371 - 377   2006年5月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：環境技術学会  

DOI： 10.5956/jriet.35.371

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Development of electric rust preventive machining method in cylindrical grinding 査読

Naohiro Nishikawa, Kazuhito Ohashi, Shinya Tsukamoto, Toshikatsu Nakajima

LEM 2005 - 3rd International Conference on Leading Edge Manufacturing in 21st Century   2005 ( 0 )   653 - 658   2005年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：The Japan Society of Mechanical Engineers  

The electricity rust preventive machining method is proposed to effective prevents the workpiece from rusting in the cylindrical grinding only with water. The workpiece as a cathode is protected from rusting by supplying the electric current through the water. This method leads to the ecology machining because the water without extreme pressure agents, mineral oils and so on included in conventional machining fluid. Therefore, this method saves much work in a treatment of stale machining fluid. In this paper, the electric rust preventive machining method is developed and investigated its application to cylindrical grinding.

DOI： 10.1299/jsmelem.2005.2.653

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Application of cavitation aided machining to micro patterning of glass

Kazuhito Ohashi, Shinya Tsukamoto, Masaya Taguchi, Koichi Matsuoka

Proceedings of the 20th Annual ASPE Meeting, ASPE 2005   2005年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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円筒研削における電気防錆加工法の提案 : 水供給における工作物の防錆効果の実験的検証 査読

塚本 真也, 大橋 一仁, 西川 尚宏, 須藤 将仁, 久保 孝典, 中島 利勝

精密工学会誌   71 ( 3 )   337 - 341   2005年3月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

近年, 機械加工の廃液処理による環境への悪影響が懸念されている. 本研究では, 環境に無害な水のみを加工液に使用する環境調和型加工法を提案している. この場合に懸念される水による工作物への錆の発生を, 水を介して工作物に極微弱な電流を印加することにより防止する電気防錆加工法を考案し, 円筒研削における防錆効果を検討した.

DOI： 10.2493/jspe.71.337

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Educational effects of creative thinking method in design project

Shinya Tsukamoto, Kazuhito Ohashi, Seiichi Washio, Tashiyuki Torii, Akira Inoue

Proceedings of the SICE Annual Conference   1055 - 1059   2005年

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掲載種別：研究論文（国際会議プロシーディングス）  

This report shows the practical educational effects of the design project to build up a jumping machine through PBL (Project-Based Learning) that trains students' inquisitiveness and creativity. Particularly, we report in detail that measuring the initial value of students' creativity is indispensable for them to realize the importance of inquisitiveness and creativity, ant that learning creative thinking methods wipes out students' perplexity and repulsion toward Open-ended problems and enhances educational effects. © 2005 SICE.

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Proposal of Electricity Rust Preventive Machining Method in Cylindrical Grinding - Antirust Effect of Workpiece in Grinding with Water -

Shinya Tsukamoto, Kazuhito Ohashi, Naohiro Nishikawa, Masahito Sudou, Takanori Kubo, Toshikatsu Nakajima

Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering   71 ( 3 )   320 - 324   2005年

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掲載種別：研究論文（学術雑誌）  

The electricity rust preventive machining method is proposed to effective prevent the workpiece from rusting in the cylindrical grinding only with water. The workpiece as a cathode is preserved from rusting by supplying the electric current through the water. This method leads to the ecology machining because the water without extreme pressure agents, mineral oils and the like is used as the machining fluid. Therefore, this method saves much work for a treatment of used machining fluid. Main conclusions obtained are as follows: (1) The effective prevention from rusting for 1 hour can be achieved by the electricity rust preventive machining method in cylindrical grinding. (2) The effective rust prevention conditions of electric supplying time and current are experimentally decided in cylindrical grinding and a very few electric power is necessary for rust prevention. (3) The supply current for the rust prevention increases with increasing the voltage, the nozzle-workpiece clearance or the exposed surface area. And the turbulent flow of water interferes with the supply of the current which increased with increasing the water flow rate. © 2005, The Japan Society for Precision Engineering. All rights reserved.

DOI： 10.2493/jjspe.71.320

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Minimizing Process of Surface Roughness in Grinding with Super-soft Grade Resinoid Wheel 査読

K.Ohashi, S.Tsukamoto, T.Nakajima

Proceedings of The 7th International Conference on Progress of Machining Technology   122 - 127   2004年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Transition of Form Accuracy in Cylindrical Plunge Grinding Process of Ti-Ni Alloy 査読

K.Ohashi, S.Tsukamoto, Guifu HE, T.Nakajima

Proceedings of The 7th International Conference on Progress of Machining Technology   50 - 55   2004年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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極軟質レジノイド砥石による表面あらさ改善過程の研究(第2報) : 表面あらさ極小化現象を利用した仕上加工法の提案 査読

大橋 一仁, 西川 亮太, 塚本 真也, 多田 憲倫, 中島 利勝

精密工学会誌論文集 = Journal of the Japan Society for Precision Engineering Contributed Papers   70 ( 10 )   1291 - 1295   2004年10月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

The surface roughness decreases down to the minimum just after start of plunge grinding with a super-soft grade resinoid bond wheel, of which bonding material is prepared by the interaction of polyvinyl alcohol and thermosetting plastics. In this paper, the grinding method with the resinoid bond wheel is investigated for the finest surface finish of workpiece, based on such minimizing phenomenon of surface roughness. Main conclusions obtained in this paper are as follows : (1) The finest surface finish is obtained by spark-out grinding operation starting just at the moment on which the surface roughness of workpiece decreases down to the minimum. (2) The surface finish by this grinding operation decreases with decreasing the initial surface roughness, but the decrease in surface roughness during the spark-out grinding process increases with increasing initial surface roughness. (3) The repetition of this grinding operation without dressing makes the surface finish smaller than that by a general grinding operation with larger depth of cut before spark-out grinding.

DOI： 10.2493/jspe.70.1291

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内面研削の深穴オシレーション加工における最適形状制御法の開発 査読

塚本 真也, 大橋 一仁, 吉原 啓太, 吉田 哲弘, 中島 利勝

精密工学会誌   70 ( 2 )   263 - 268   2004年2月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

In the case of internal oscillation grinding of deep straight hole which is longer than a wheel width, a workpiece is finished in a taper shape because of a larger elastic deformation of wheel spindle in grinding process. In this paper, the controlled internal oscillation grinding technique for optimal form accuracy of a deep straight hole is developed, introducing retraction grinding method in which a grinding wheel head rapidly retracts a small amount against infeed direction at the beginning of spark-out grinding. Main conclusions obtained in this paper are as follows; (1) In internal grinding of a deep straight hole with retraction motion, the setting retraction amount is decided by the wheel spindle recovery which is almost in direct proportion to the retraction amount. (2) At the optimal retraction amount finishing a workpiece to a minimum taper error, the elastic deformation of wheel spindle just after retraction motion is constant decided by the grinding system even if the plunge speed or the speed ratio are different. (3) The optimal retraction amount is decided by subtracting the above own elastic deformation of wheel spindle from the elastic deformation of wheel spindle just before the beginning of spark-out grinding process without retraction motion.

DOI： 10.2493/jspe.70.263

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Retraction Grinding Method for Reducing Taper Error in Deep Hole Oscillation Grinding 査読

Tsukamoto Shinya, Ohashi Kazuhito, Nakajima Toshikatsu

Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21   2003 ( 0 )   263 - 268   2003年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：一般社団法人 日本機械学会  

In this paper, the retraction grinding method, in which the grinding wheel head gets rapidly back by very small amount immediately after the beginning of spark-out state, is proposed for improving the taper error in the deep hole oscillation internal grinding. Main conclusions obtained are as follows : (1) It is made clear that by the retraction grinding method the taper error of workpiece can remarkably be improved with the fine surface roughness condition. (2) In the retraction grinding the taper generation mechanism is affected just by extending of spark-out grinding time due to a decrease of the residual stock on the stiffness of the grinding wheel and workpiece spindles. (3) By taking into account the periodic change of the normal grinding force linking to the oscillation movement, the measured taper can sufficiently be predicted.

DOI： 10.1299/jsmelem.2003.263

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Development of the Electricity Rust Preventive Machining Method in Surface Grinding 査読

S.Tsukamoto, N.Nishikawa, K.Okamoto, K.Ohashi

Key Engineering Materials   257-258   483 - 488   2003年11月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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Grain Boundary Step Generation in Ultraprecision Cutting of Al-Mg Alloy 査読

K.Ohashi, M.Yoshikawa, S.Tsuka-moto, T.Nakajima

Proceedings of the International Conference on Leading Edge Manufacturing in 21st Century   2003   327 - 332   2003年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：一般社団法人日本機械学会  

In this study, the characteristics of grain boundary step generation in practical ultraprecision cutting opreration of Al-Mg alloy are experimentally made clear by analyzing height of grain boundary step, crystal direction, surface finish, residual stress and so on. Especially, crystal direction of each crystal grain of Al-Mg alloy appearing on finished surface is decided by ECP (Electron channeling pattern) method, and relationships between crystal orientation and height of grain boundary step are investigated. Main conclusions obtained in this study are as follows : (1) The height of grain boundary step on finished surface increases with a closen crystal orientation to (1 2 4) on the stereographic projection of crystal direction of Al-Mg alloy. (2) The height of grain boundary step or the surface finish decrease with a decrease of clearance angle of cutting tool. So a cutting tool with a smaller clearance angle results in finer machined surface.

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電解研削加工における加工変質層の低減法(第2報)-電解停止制御スパークアウト研削法の開発とその効果- 査読

大橋一仁, 若林永三, 藤井直人, 塚本真也, 中島利勝

精密工学会誌   69 ( 11 )   1590 - 1594   2003年11月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

A softened affected layer generated in electrolytic grinding at higher electrolytic voltage could not be removed by a spark-out grinding without electrolysis in the previous report. In this report, the electrolysis controlled spark-out grinding is developed in order to remove completely an affected electrolytic ground layer at any electrolytic voltage. Effects of the electrolysis controlled spark-out grinding on finished surface characteristics are experimentally proved by investigating ultra micro hardness on machined surface, surface finish and so on. Main conclusions obtained in this report are as follows: (1) The electrolysis controlled spark-out grinding can prevent the finished surface hardness from decreasing at higher electrolytic voltage in which affected layer is remained after spark-out grinding without electrolysis. (2) A surface finish and an effective spark-out grinding time decrease by the spark-out grinding with an optimum electrolyze-out time. (3) An optimum electrolyze-out time decreases with increasing electrolytic voltage and becomes negative at electrolytic voltage over 7V.

DOI： 10.2493/jjspe.69.1590

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Development of Cavitation Aided Machining for Finishing Fine Surface 査読

K.Ohashi, S.Tsukamoto, T.Nakajima

Proceedings of The Eighteenth Annual ASPE Meeting   2003年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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電解研削加工における加工変質層の低減法(第1報)-加工変質層の性状と電解停止スパークアウト研削によるその低減過程- 査読

大橋一仁, 若林永三, 上田晋一, 藤井直人, 塚本真也, 中島利勝

精密工学会誌   69 ( 8 )   1129 - 1134   2003年8月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

The purpose of this study is to minimize affected layer generated by electrolytic grinding which results in deterioration of gloss or decrease of hardness on machined surface. In this paper, a reduction process of affected electrolytic ground layer by a spark-out grinding process without electrolysis, in which electrolytic effect stops just in the moment of stopping infeed of grinding wheel, is experimentally investigated by analyzing characteristics of electrolytic ground surface with a glossiness meter or an ultra micro hardness tester. Main conclusions obtained in this paper are as follows: (1) The depth of affected layer decreasing hardness is nearly 2.5 times as large as that deteriorating gloss, and both depths of affected layer increase with increasing electrolytic voltage. (2) In the case of higher electrolytic voltage, the stock removal in spark-out grinding process without electrolysis is less than the depth of affected layer decreasing hardness generated in steady electrolytic grinding process. So after finish of spark-out grinding, an affected layer decreasing hardness is remained on finished surface on which glossiness is recovered up to that of mechanical ground surface.

DOI： 10.2493/jjspe.69.1129

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極軟質レジノイド砥石による表面あらさ改善過程の研究(第1報)-研削開始後の表面あらさ最小化現象- 査読

大橋一仁, 多田憲倫, 中沢和彦, 大川憲毅, 塚本真也, 中島利勝

精密工学会誌   69 ( 6 )   803 - 808   2003年6月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

In this paper, an improving process of surface roughness in cylindrical plunge grinding with a super-soft grade resinoid bond wheel, whose bonding material is prepared by the interaction of polyvinyl alcohol and thermosetting plastics, is discussed, analyzing the ground surface profile, the topography of acting wheel surface and so on. Main conclusions obtained in this paper are as follows: (1) Minimizing phenomenon of surface roughness in which surface roughness decreases down to the minimum after start of grinding is remarkably occurred in plunge grinding process with a super-soft grade resinoid bond wheel. And the phenomenon is useful for improving surface roughness by grinding. (2) Decrease of number of simultaneously acting cutting edge by a rapid increase of wheel wear leads to worsen the surface finish just after the point of minimizing surface roughness. (3) The number of simultaneously acting cutting edge is obtained by ground surface profile, topography of acting wheel surface and interference wheel arc length.

DOI： 10.2493/jjspe.69.803

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跳ねる機械を実現させる創成科目の導入とその教育効果 査読

塚本真也, 大橋一仁, 鷲尾誠一, 鳥居太始之

工学教育   50 ( 6 )   51 - 56   2002年11月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人 日本工学教育協会  

本報告では,機械工学科の専門性を加味した「ストローの斜塔」と「跳ねる機械」の創成過程における具体的な教育効果について報告している.初年度の試行の結果,学生の課題探求・創成能力の育成のためにモノ創成をやみくもに実施しても失敗する可能性が高く,導入段階の発想ツールによるアイデア創出とそれを実現するための綿密な創成計画の構築が不可欠であることを認識した.次年度にFDを実施することで,ストローの斜塔ならびに跳ねる機械ともに,その独創性を顕著に向上させることができた.

DOI： 10.4307/jsee.50.6_51

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創成科目における発想ツールの学習とその教育効果 査読

塚本真也, 大橋一仁, 鷲尾誠一, 鳥居太始之

工学教育   50 ( 5 )   71 - 77   2002年9月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人 日本工学教育協会  

本報告では,PBLで跳ねる機械を実現させる創成科目―学生の課題探求・創成能力を育成する創成プロジェクト―の具体的な教育成果を紹介する.特に,課題探求・創成能力の重要性を認識させるためには,準備段階で学生の発想力初期値を測定することが不可欠であること,ならびに発想ツールの学習でOpen-Ended課題に対する学生の反発・戸惑いが払拭でき,教育効果が向上することなどを詳細に報告している.

DOI： 10.4307/jsee.50.5_71

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Al-Mg合金の超精密切削加工における仕上げ面粗さの創成要因に関する研究 査読

中島利勝, 吉川満雄, 大橋一仁, 東本修, 金目茂孝

精密工学会誌   68 ( 9 )   1221 - 1225   2002年9月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

In ultraprecision cutting by which surface finish is nano-meter order, the problems which are not necessary to consider in ordinary cutting occur. One of these is the step at grain boundary on machined surface which is generated by the difference of elastic recovery of crystal grains after cutting edge passing because of mechanical characteristics of crystal grain affected by crystal direction. In this study, in order to make clear the mechanism of the surface finish generation in ultraprecision cutting of Al-Mg alloy, the relationship between clearance angle of tool and surface finish is analyzed quantitatively taking notice of step at grain boundary. As a result, it is confirmed that burnishing effect with clearance of cutting tool, which strengthen with a decrease of clearance angle, improves surface finish in ultraprecision cutting of Al-Mg alloy.

DOI： 10.2493/jjspe.68.1221

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Dressing process of resinoid bonded wheel with YAG laser for form grinding 査読

K Ohashi, T Nakajima

PROGRESS OF MACHINING TECHNOLOGY   351 - 356   2002年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：AVIATION INDUSTRY PRESS  

Form dressing of poreless resinoid bonded wheel is carried out by scanning a Q-switched YAG laser beam on the wheel surface and the form dressing mechanism is experimentally investigated by analyzing initial profile of dressed wheel, variation of wheel tip profile in form grinding process, density and height of cutting edge and the like, and by comparing with those by a traditional dressing with PVA wheel. Irradiation of YAG laser beam on Wormed or circular formed resinoid wheel surface leads to the available dressing effect and higher form accuracy in grinding process. Especially the scanning of a YAG laser beam on Wormed resinoid bond wheel surface results in about 10 mum in radius of wheel tip which is better form dressing effect than that by a traditional dressing with PVA wheel.

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キャビテーション援用加工の基礎的研究 ガラス表面の超精密基礎加工現象 査読

大橋一仁, 西山耕二, 村本竜郎, 中島利勝

精密工学会誌   67 ( 12 )   2000 - 2004   2001年12月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

The purpose of this research is to develop a cavitation aided machining which positively makes use of cavitation occurring in fluid for machining phenomenon. In this paper, a fundamental ultraprecision machining phenomenon of glass surface is made clear and its machining characteristics is experimentally investigated by analyzing surface finish, stock removal and cavitation impact. Then an efficiency of applying the cavitation aided machining as an ultraprecision machining is proved by carrying out ultraprecision surface machining on glass surface based on the machining phenomenon. Main conclusions obtained in this paper are as follows; (1) Cavitation aided machining can be applied to an ultraprecision machining by which the surface finish of glass is improved down to the surface finish at about 5.0nmRy by using abrasives of WA 4000. (2) WA abrasive grains generate finer machined surface than GC abrasives which is harder or AZ abrasives which is heavier. (3)Ultraprecision machined glass surface with 60mm in length is generated by applying a fundamental machining phenomenon of cavitation aided machining along flowing direction of machining fluid continuously.

DOI： 10.2493/jjspe.67.2000

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極軟質レジノイド砥石による仕上面生成特性に関する研究 査読

中島利勝, 大橋一仁, 大川憲毅, 中沢和彦, 多田憲倫

砥粒加工学会誌   45 ( 4 )   169 - 174   2001年4月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：砥粒加工学会  

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電解研削加工における材料除去特性に関する研究 査読

中島利勝, 大橋一仁, 上田晋一, 山下諭, 藤井直人

精密工学会誌   67 ( 1 )   120 - 125   2001年1月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

In this paper, the material removal mechanism in electrolytic grinding process is experimentally investigated by analyzing the stock removal due to electrolytic phenomenon and to grinding phenomenon in electrolytic grinding process, taking the inevitable accumulation phenomenon of interference depth of wheel into consideration. The material removal effect in electrolytic grinding is also discussed from the viewpoint of machining energy. Main conclusions obtained in this paper are as follows: (1) The electric current in electrolytic grinding process increases from beginning of wheel interference because of the momentary short circuit or electric discharge through generated chips at smaller concentration of electrolyte or applied voltage. Therefore all electric current isn't always consumed for the electrolytic effect. (2) There exists the critical electrolytic conditions from which the electrolytic effect in electrolytic grinding process intensifies. (3) The total consumed energy reduces with the increase of concentration of electrolyte or the applied voltage, but the effective energy rate for material removal decreases at about 7V in applied voltage.

DOI： 10.2493/jjspe.67.120

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移動熱源によるレジノイド砥石のドレッシングに関する研究 (第4報) YAGレーザの総形ドレッシングへの適用 査読

中島利勝, 大橋一仁, 川崎真一, 浜野泰幸

精密工学会誌   65 ( 11 )   1633 - 1638   1999年11月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

Form dressing of V-formed resinoid bond wheel by scanning a Q-switched YAG laser beam on the wheel surface is carried out and the form dressing mechanism is experimentally investigated by analyzing initial profile of dressed wheel, variation of wheel tip profile in form grinding process, density and height of cutting edge and so on, comparing with those by a traditional dressing with PVA wheel. Main conclusions obtained in this paper are as follows; (1) Scanning YAG laser beam on V-formed resinoid bond wheel surface results in the better form dressing effect concerning form accuracy or projecting height of cutting edge than a traditional dressing with PVA wheel. (2) Radius of wheel tip decreases with increasing peripheral wheel speed in form dressing because a heat effect on wheel surface by laser beam decreases with an increase of peripheral wheel speed. (3) Laser dressing of V-formed wheel at higher peripheral wheel speed represses a reduction of form accuracy in form grinding process. (4) Radius of dressed wheel tip increases with increasing formed angle and is much affected at larger formed angle by peripheral wheel speed in laser dressing.

DOI： 10.2493/jjspe.65.1633

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Grinding process for controlling coefficient of friction of AFRR V-ribbed belt 査読

T Nakajima, K Ohashi

PROGRESS OF CUTTING AND GRINDING   245 - 250   1998年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：WORLD PUBLISHING CORPORATION  

Aramid fiber reinforced rubber (AFRR) is one of advanced composite materials, which have some excellent characteristics for a transmission belt. V-ribbed belt, which is used as an automobile engine part, is formed by grinding to generate not only the required shape but also the suitable frictional characteristics. The frictional characteristics of V-ribbed belt of AFRR are significantly affected by form grinding conditions because of much lower coefficient of friction of aramid fiber and higher one of matrix rubber. In this paper, an in-process measuring system of coefficient of friction of V-ribbed belt in form grinding process is developed based on quantitative analysis of coefficient of friction. Furthermore, a form grinding technique of V-ribbed belt for controlling coefficient of friction is proposed by investigating coefficient of friction in spark-out grinding process of V-ribbed belt.

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キャビテーション援用ホーニング加工法(CAH)の開発研究 査読

中島利勝, 大橋一仁, 吉原永朗, 西山耕二

精密工学会誌   64 ( 6 )   913 - 917   1998年6月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

The purpose of this research is to develop a new technique of CAH (cavitation aided honing) by which the workpiece can be easily finished in a fine surface with a very simple apparatus. The machining fluid, that is mixture of abrasive grains and water as carrier is sucked by a pump, and the flow of machining fluid is controlled by a restrictor, and then the cavitation phenomenon locally occurs by the rapid decrease of carrier pressure, so that abrasive grains in the mixed fluid come to interfere on the surface. In this report, the possibility of applying CAH to precision machining is investigated by analyzing surface finish, stock removal and behavior of carrier. Main conclusions obtained in this paper are as follows ; (1) Action of abrasive grains onto the surface in CAH is induced by very fine vibratory impact caused by cavitation occurred in the lower part from the center of restrictor in a flow. (2) At 2.0mm in clearance, cavitation impact of carrier becomes strongest, so that the stock removal and the decrease of surface roughness have maximum. (3) CAH can be applied to an ultraprecision machining by which the surface finish of Al-Mg alloy is improved from 7.3nm R_a with ultraprecision cutting down to the surface finish at 6.6nm R_a.

DOI： 10.2493/jjspe.64.913

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アラミド繊維強化ゴムの研削加工に関する研究 (第5報) Vリブドベルトの摩擦係数調整成形研削加工 査読

中島利勝, 大橋一仁, 黒川純, 大川憲毅

精密工学会誌   63 ( 10 )   1469 - 1473   1997年10月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

Frictional characteristics of V-ribbed belt of aramid fiber reinforced rubber are significantly affected by form grinding conditions because of much lower coefficient of friction of aramid fiber and higher one of matrix rubber. In this paper, an in-process measuring system of coefficient of friction of V-ribbed belt in form grinding process is developed based on quantitative analysis of coefficient of friction in the previous report. Furthermore, a form grinding technique of V-ribbed belt for controlled coefficient of friction is proposed by investigating coefficient of friction in spark-out grinding process of V-ribbed belt. Main conclusions obtained in this paper are as follows; (1) The in-process measuring system of coefficient of friction of V-ribbed belt which can exactly predict its wide variation in form grinding process is developed. (2) In spark-out grinding process of V-ribbed belt, generation of V-groove is finished in a while from starting of spark-out grinding, and projecting length of aramid fiber continues to decrease gradually until the end of spark-out grinding process. (3) V-ribbed belt which has the required coefficient of friction can be finished by stopping grinding of V-ribbed belt when the measuring system points at the required coefficient of friction in spark-out grinding process after finishing to generate V-groove.

DOI： 10.2493/jjspe.63.1469

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アラミド繊維強化ゴムの研削加工に関する研究 (第4報) Vリブドベルトの成形研削機構と摩擦特性 査読

中島利勝, 大橋一仁, 黒川純

精密工学会誌   63 ( 9 )   1295 - 1299   1997年9月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

Aramid fiber reinforced rubber (AFRR) is one of advanced composite materials, which have some excellent characteristics transmission belt. V-ribbed belt is formed by grinding to generate not only the required shape but the suitable frictional characteristics on contacting rubber surface with a pulley. The frictional characteristics of AFRR V-ribbed belt is sensitively affected by projecting condition of aramid fiber whose coefficient of friction is much lower than that of matrix rubber. In this paper, form grinding mechanism of AFRR V-ribbed belt with diamond wheel is experimentally investigated by analyzing form accuracy of V-groove and projecting length of aramid fiber. Furthermore, an estimating method for the coefficient of friction of AFRR V-ribbed belt is proposed by clearing up effects of each factor on the coefficient of friction of V-ribbed belt. Main conclusions obtained in this paper are as follows: (1) Coefficient of friction of AFRR V-ribbed belt is decided by V-groove angle and projecting fiber length on the surface generated in form grinding, and it decreases with increases of V-groove angle or projecting fiber length. (2) Coefficient of friction of V-ribbed belt can be estimated by subtracting the decrease from coefficient of friction caused by projecting aramid fiber from the coefficient of friction decided by V-groove angle of matrix rubber belt without projecting fiber. (3) Both V-groove angle and projecting fiber length increase with an increase of curvature of V-ribbed belt in form grinding process.

DOI： 10.2493/jjspe.63.1295

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移動熱源によるレジノイド砥石のドレッシングに関する研究 (第3報) QスイッチYAGレーザによるドレッシング性能の向上 査読

中島利勝, 大橋一仁, 八木大輔

精密工学会誌   63 ( 8 )   1153 - 1157   1997年8月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

The purpose of this study is to establish a new dressing technique of resinoid bond wheel by scanning the point of heat source on wheel surface. Dressing effect with CW YAG laser is testified in previous report. In this paper, Q-switched YAG laser is selected as a dressing tool for making more improvement of dressing effect with YAG laser, and dressing mechanism and grinding characteristics of dressed resinoid bond wheel with Q-switched YAG laser are experimentally discussed by observing the acting wheel surface and analyzing some grinding results with dressed wheel. Furthermore, dressing effect with Q-switched laser is verified by comparing with that with CW laser. Main conclusions obtained in this paper are as follows : (1) Scanning Q-switched YAG laser beam on resinoid bond wheel surface results in better dressing effect than that with CW laser beam. (2) Dressing with Q-switched laser of 2kHz in Q-switch frequency brings out best grinding characteristics of resinoid bond wheel in those of all Q-switch frequency. (3) In lower Q-switch frequency, heat affected structure generated on dressed wheel surface is completely removed as soon as laser beam is irradiated because of radical and frequent variation of heat energy supplied with laser beam.

DOI： 10.2493/jjspe.63.1153

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工学部学生に対する「技術文章学」教育の試み : 岡山大学での失敗・成功事例と教育成果 査読

中島 利勝, 塚本 真也, 大橋 一仁

工学教育   45 ( 3 )   46 - 51   1997年5月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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Dressing Process of Resinoid Bonded Wheel with YAG Laser 査読

T.Nakajima, K.Ohashi

Proceedings of the Third International Conference on Progress of Cutting and Grinding   570 - 575   1996年11月

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掲載種別：研究論文（国際会議プロシーディングス）  

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常圧焼結窒化けい素の単粒研削によるクラック層に関する研究 査読

中島利勝, 大橋一仁, 岡本直之, 岡本裕貴

精密工学会誌   62 ( 9 )   1330 - 1334   1996年9月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

The purpose of this paper is to get fundamental informations for estimating depth of crack layer under ground surface of sintered silicon nitride which is one of typical engineering ceramics. This paper proposes a estimation method of the depth of crack layer generated in a transitional cutting process, which is a fundamental phenomenon in grinding process, with a single point diamond, as a function of normal cutting force, generated groove depth, Poisson's ratio, fracture toughness and a characteristic parameter of affected structure zone based on linear fracture mechanics. And the rule of the characteristic parameter, which is decided by interference type of cutting edge, is experimentally found out. The characteristic parameter decreases with increasing groove depth in conformity with the exponential function determined by indentation characteristic and nose radius of cutting edge in spherical interference region, and it turns to constant at critical interference depth according to vertical angle of cutting edge. By applying the method in each cutting phenomenon of a cutting edge in grinding of silicon nitride, the depth of remained crack layer in a grinding process can be estimated and grinding conditions or stock removal in successive grinding process can reasonably be determined.

DOI： 10.2493/jjspe.62.1330

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移動熱源によるレジノイド砥石のドレッシングに関する研究 (第2報) YAGレーザによるドレッシング効果 査読

中島利勝, 大橋一仁, SUN L X, 実盛健郎, 八木大輔

精密工学会誌   61 ( 4 )   556 - 560   1995年4月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：公益社団法人精密工学会  

There is a possibility that resinoid bond wheel may thermally be dressed by scanning the heat source on the wheel surface, because bonding material is lower heat resistance than other ones. In this paper, the dressing effect on resinoid bond wheel with YAG laser beam is discussed, observing the acting wheel surface and investigating the grinding characteristics of the wheel dressed by scanning YAG laser beam. Main conclusions obtained in this paper are as follows: (1) Irradiation of YAG laser on resinoid bond wheel surface results in the dressing effect. (2) The effective dressing conditions concerning the peripheral wheel speed and the feed rate of laser beam are determined by the heat energy provided on wheel surface, the transitional characteristic of heating and the width of affected region by scanning of laser beam during one revolution of wheel. (3) Resinoid bonding material become brittle and weak and/or abrasive grains are damaged by irradiation of YAG laser on the wheel surface. (4) Under the same heat energy provided on wheel surface, surface finish increases with a decrease of the peripheral wheel speed in dressing and an increase of the feed rate of laser beam.

DOI： 10.2493/jjspe.61.556

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アラミド繊維強化ゴムの研削加工に関する研究(第3報) 仕上面の摩擦特性の解析 査読

中島利勝, 大橋一仁, 山本哲

精密工学会誌   60 ( 11 )   1637 - 1641   1994年11月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.2493/jjspe.60.1637

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Affected Layer in Grinding of Sialon 査読

T.Nakajima, K.Ohashi

Proceedings of the First Asia-Pacific and Second Japan-China International Conference on Progress of Cutting and Grinding   447 - 452   1994年9月

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掲載種別：研究論文（国際会議プロシーディングス）  

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アラミド繊維強化ゴムの研削加工に関する研究 (第2報) 仕上面における繊維の切残し現象と摩擦特性 査読

中島利勝, 大橋一仁, 山本哲

精密工学会誌   60 ( 9 )   1299 - 1303   1994年9月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.2493/jjspe.60.1299

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移動熱源によるレジノイド砥石のドレッシングに関する研究 (第1報) YAGレーザの単発照射による砥石表面の変質機構 査読

中島利勝, 大橋一仁, SUN L X, 実盛健郎

精密工学会誌   59 ( 12 )   1967 - 1972   1993年12月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.2493/jjspe.59.1967

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常圧焼結窒化けい素の超仕上機構に関する研究 査読

中島利勝, 大橋一仁, 竹本知臣

精密工学会誌   59 ( 9 )   1483 - 1488   1993年9月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.2493/jjspe.59.1483

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サイアロンの単粒研削機構の研究 査読

中島利勝, 大橋一仁

砥粒加工学会誌   37 ( 1 )   44 - 50   1993年1月

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担当区分：責任著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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アラミド繊維強化ゴムの研削加工に関する研究 第1報 マトリックスゴム材料の研削特性 査読

中島利勝, 大橋一仁, 板井豊和

精密工学会誌   58 ( 9 )   1539 - 1544   1992年9月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.2493/jjspe.58.1539

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サイアロンの研削加工面下のクラックに関する研究 査読

中島利勝, 宇野義幸, 大橋一仁

砥粒加工学会誌   35 ( 3 )   1991年7月

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ガラス繊維強化プラスチックの研削過程に関する研究 査読

中島利勝, 大橋一仁, 塚本真也, 古川竜治

精密工学会誌   57 ( 7 )   1253 - 1258   1991年7月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.2493/jjspe.57.1253

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ジルコニア研削過程の定量化の研究 査読

中島利勝, 宇野義幸, 藤原貴典, 大橋一仁

精密工学会誌   55 ( 1 )   167 - 172   1989年1月

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DOI： 10.2493/jjspe.55.167

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部分安定化ジルコニアの研削機構の研究 査読

中島利勝, 宇野義幸, 藤原貴典, 大橋一仁

精密工学会誌   54 ( 8 )   1544 - 1549   1988年8月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.2493/jjspe.54.1544

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サイアロンの円筒プランジ研削加工の研究 査読

中島利勝, 宇野義幸, 藤原貴典, 池尻篤則, 大橋一仁

精密工学会誌   54 ( 7 )   1298 - 1303   1988年7月

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掲載種別：研究論文（学術雑誌）  

DOI： 10.2493/jjspe.54.1298

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