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

doi:10.2493/jjspe.77.576

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

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	576-580
Number of pages	5
Journal	Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering
Volume	77
Issue number	6
DOIs	https://doi.org/10.2493/jjspe.77.576
Publication status	Published - 2011 Jun
Externally published	Yes

Keywords

Artificial hip joint
Biomaterial
Co-Cr alloy
ELID grinding
Metal on metal (MOM)

ASJC Scopus subject areas

Mechanical Engineering

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10.2493/jjspe.77.576

Cite this

Mirror surface finishing of hemispherical inside surface by newly developed ELID grinding system. / Mizutani, Masayoshi; Kotani, Hiroshi; Naruse, Tetsuya; Komotori, Jun; Katahira, Kazutoshi; Ohmori, Hitoshi; Sumiya, Kenji; Wasa, Motoki; Fujita, Masahiro; Hasegawa, Tadashi.

In: Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering, Vol. 77, No. 6, 06.2011, p. 576-580.

Research output: Contribution to journal › Article › peer-review

Mizutani, Masayoshi ; Kotani, Hiroshi ; Naruse, Tetsuya ; Komotori, Jun ; Katahira, Kazutoshi ; Ohmori, Hitoshi ; Sumiya, Kenji ; Wasa, Motoki ; Fujita, Masahiro ; Hasegawa, Tadashi. / Mirror surface finishing of hemispherical inside surface by newly developed ELID grinding system. In: Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering. 2011 ; Vol. 77, No. 6. pp. 576-580.

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abstract = "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.",

keywords = "Artificial hip joint, Biomaterial, Co-Cr alloy, ELID grinding, Metal on metal (MOM)",

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

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doi = "10.2493/jjspe.77.576",

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AU - Katahira, Kazutoshi

AU - Ohmori, Hitoshi

AU - Sumiya, Kenji

AU - Wasa, Motoki

AU - Fujita, Masahiro

AU - Hasegawa, Tadashi

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AB - 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.

KW - Artificial hip joint

KW - Biomaterial

KW - Co-Cr alloy

KW - ELID grinding

KW - Metal on metal (MOM)

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

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Keywords

ASJC Scopus subject areas

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