Invention Application
- Patent Title: METHOD FOR MANUFACTURING BEARING RING MEMBER
- Patent Title (中): 制造轴承圈的方法
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Application No.: US14786535Application Date: 2014-04-22
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Publication No.: US20160114438A1Publication Date: 2016-04-28
- Inventor: Masahito YAMAMOTO , Hiroshi KOYAMA , Kazuto KOBAYASHI
- Applicant: NSK LTD.
- Priority: JP2013-089661 20130422
- International Application: PCT/JP2014/061343 WO 20140422
- Main IPC: B23P15/00
- IPC: B23P15/00 ; F16C33/62 ; F16C33/64 ; F16C33/58

Abstract:
Provided is a method for manufacturing a bearing ring member, whereby processing cost can be reduced and a high degree of freedom in design is obtained, by disposing a metal material of a raw material (13a), the metal material having excellent metal characteristics such as fatigue strength and wear resistance and excellent processing characteristics such as hardenability, in a portion that flows to a portion (raceway surface, etc.) where the characteristics of the metal material are required during use or forging of a bearing ring member. The present invention is configured from a first metal part (23) in which the raw material (13a) is formed in a cylindrical shape, and a second metal part (24) formed in a columnar shape by a metal material having more excellent metal characteristics or processing characteristics than the first metal part (23). For example, the second metal part (24) is disposed in a portion on an inside diameter side of the first metal part (23), which is a portion of the raw material (13a) that flows to an outer raceway (5a, 5b) of an outer ring (2) during forging.
Public/Granted literature
- US10137541B2 Method for manufacturing bearing ring member Public/Granted day:2018-11-27
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