发明申请
- 专利标题: MANUFACTURING METHOD FOR BEARING OUTER RING
- 专利标题(中): 用于承载外圈的制造方法
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申请号: US12522311申请日: 2008-01-16
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公开(公告)号: US20100101091A1公开(公告)日: 2010-04-29
- 发明人: Kazuto Kobayashi , Hiroshi Koyama
- 申请人: Kazuto Kobayashi , Hiroshi Koyama
- 申请人地址: JP Tokyo
- 专利权人: NSK LTD.
- 当前专利权人: NSK LTD.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2007-006535 20070116; JP2008-002761 20081001
- 国际申请: PCT/JP2008/050456 WO 20080116
- 主分类号: F16C33/64
- IPC分类号: F16C33/64 ; B21H1/12 ; B21K1/04 ; B21D53/12
摘要:
Provided is a manufacturing method of an outer ring (3) of a back-to-back arrangement double-row angular ball bearing from a raw material (10) comprising a upsetting (A to B), a backward extrusion process (C to D), a punching (D to E), a rolling (E to F) and a finishing, wherein an outer diameter of a first intermediate material (11a) produced by the upsetting is equal to or smaller than an inside diameter of an inner periphery large diameter portion (18) of the inner circumference of a die (13) used in the backward extrusion process and larger than an inside diameter of an inner periphery small portion (19) of the die (13), and in a condition with the first intermediate material (11a) sitting on the inner periphery inclined portion (20) of the die (13), the intermediate material (11a) is pushed toward a base of the die (13) by a punch (14), to thereby the middle metal material (29) with the highest cleanliness of the raw material (10) is exposed to the two outer ring raceways (2) of the outer ring (3).
公开/授权文献
- US08424208B2 Manufacturing method for bearing outer ring 公开/授权日:2013-04-23