Mirror surface finishing of hemispherical inside surface by newly developed ELID grinding system

Masayoshi Mizutani, Hiroshi Kotani, Tetsuya Naruse, Jun Komotori, Kazutoshi Katahira, Hitoshi Ohmori, Kenji Sumiya, Motoki Wasa, Masahiro Fujita, Tadashi Hasegawa

研究成果: ジャーナルへの寄稿学術論文査読

抄録

In this study, in order to apply electrolytic in-process dressing (ELID) grinding for surface finishing process of the sliding parts of metal on metal (MOM) artificial hip joints, a new grinding system to grind the inside surface of a hemispherical cup was developed. In this system, the workpiece was pressurized against the centre of the ball shaped grinding wheel with an oscillating pressure pin during the processing. The shape and the radius of the ball shaped grinding wheel were adjusted by using different size abrasive grains. Hemispherical cup-shaped samples of Cobalt-Chromium (Co-Cr) alloy were ground by this grinding system and their surface smoothness was improved. In addition, the roundness of the specimens was the same as or superior to that of the commercially available sliding parts. This result suggests that this grinding system is applicable as a surface finishing process of the sliding parts of MOM artificial hip joints.

本文言語英語
ページ(範囲)576-580
ページ数5
ジャーナルJournal of the Japan Society for Precision Engineering
77
6
DOI
出版ステータス出版済み - 2011 6月

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