MACHINE COMPONENT AND SUPER-FINISHING METHOD THEREFOR

Title:

MACHINE COMPONENT AND SUPER-FINISHING METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2010/070841

Kind Code:

A1

Abstract:

Provided are a machine component, particularly, a bearing component such as a rolling element or a bearing ring, which has no machined mark in a crossing-angle pattern, a rolling bearing using same, and a super-finishing method which enables machining in which the machined mark in the crossing-angle pattern is not generated. The method is for super-finishing an object to be machined (8) that is a machine component serving as a rolling element or a bearing ring. The surface to be machined (4b) of a rotating elastic grindstone (4) is formed in the shape corresponding to the surface to be machined (8a) of the object to be machined (8). While the object to be machined (8) is being rotated, the rotating elastic grindstone (4) is pressed against the surface to be machined (8a) of the object to be machined (8) from the end thereof. The elastic grindstone (4) is moved in the machining trajectory in which the surface to be machined (4b) with the shape corresponding to the surface of the object to be machined of the elastic grindstone (4) is along the surface to be machined (8a) of the object to be machined (8). The machined surface (8a) of the machined object (8) thus super-finished is a smooth surface with no machined mark in the crossing-angle pattern.

Inventors:

ITOU GOUSUKE (JP)
FUJIMOTO SATOSHI (JP)

Application Number:

PCT/JP2009/006681

Publication Date:

June 24, 2010

Filing Date:

December 08, 2009

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)
ITOU GOUSUKE (JP)
FUJIMOTO SATOSHI (JP)

International Classes:

F16C33/64; B24B5/16; B24B35/00; F16C19/22; F16C33/34

Foreign References:

JPH11138350A	1999-05-25
JP2004322307A	2004-11-18
JPH03142004A	1991-06-17
JP2007162893A	2007-06-28
JP2004174641A	2004-06-24
JP2007168055A	2007-07-05
JP2007260829A	2007-10-11
JP2007260830A	2007-10-11
JP2007333161A	2007-12-27

Other References: