Invention Grant
- Patent Title: Superfinishing machine, superfinishing method and outer ring of bearing having superfinished raceway surface
- Patent Title (中): 超精加工机,超精加工方法和具有超级滚道面的轴承外圈
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Application No.: US14356690Application Date: 2012-06-22
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Publication No.: US09574609B2Publication Date: 2017-02-21
- Inventor: Eiji Utada , Natsuki Sensui , Takayuki Watanabe
- Applicant: Eiji Utada , Natsuki Sensui , Takayuki Watanabe
- Applicant Address: JP Tokyo
- Assignee: NSK LTD.
- Current Assignee: NSK LTD.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2011-244683 20111108
- International Application: PCT/JP2012/066080 WO 20120622
- International Announcement: WO2013/069331 WO 20130516
- Main IPC: B24B35/00
- IPC: B24B35/00 ; B24B19/06 ; F16C33/58 ; F16C33/64 ; F16C19/36

Abstract:
A superfinishing machine and a superfinishing method which can perform axially uniform finishing on a logarithmically crowned surface formed on an inner peripheral surface of an annular member in a short time, and an outer ring of a bearing having a raceway surface superfinished by the superfinishing method, are provided. A superfinishing machine 1 includes a linearly reciprocating mechanism 40 configured to linearly reciprocate a grinding stone 3 held by a pressing section 30, along a plane B touching a generatrix of the logarithmically crowned surface, and in a direction C inclined by a given angle φ with respect to a center axis O of an outer ring 10.
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