Invention Grant
US09346097B2 Process for manufacturing rolling contact member, process for manufacturing rolling bearing, raceway member of rolling bearing and rolling bearing
有权
制造滚动接触部件的方法,制造滚动轴承的方法,滚动轴承的滚道部件和滚动轴承
- Patent Title: Process for manufacturing rolling contact member, process for manufacturing rolling bearing, raceway member of rolling bearing and rolling bearing
- Patent Title (中): 制造滚动接触部件的方法,制造滚动轴承的方法,滚动轴承的滚道部件和滚动轴承
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Application No.: US13310423Application Date: 2011-12-02
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Publication No.: US09346097B2Publication Date: 2016-05-24
- Inventor: Kikuo Maeda , Yuji Okamoto
- Applicant: Kikuo Maeda , Yuji Okamoto
- Applicant Address: JP Osaka
- Assignee: NTN Corporation
- Current Assignee: NTN Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2006-153734 20060601
- Main IPC: B21K1/04
- IPC: B21K1/04 ; B23P15/00 ; F16C33/32 ; F16C33/64 ; F16C19/36 ; F16C33/36 ; F16C19/06

Abstract:
A process for manufacturing a rolling contact member comprises preparing a steel member consisting of a steel containing 0.7 mass % or more of carbon; performing hot forging of the steel member prepared in the steel member preparation step to thereby obtain a blank ring as the first forged member; performing turning of the blank ring obtained in the hot forging step to thereby remove part of the blank ring; and performing cold forging of the blank ring wrought in the first turning step to thereby obtain a stepped ring. In the steps subsequent to the cold forging step, on the stepped ring, the area wrought in the first turning step is not subjected to cutting.
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