发明授权
- 专利标题: Method of producing bushing
- 专利标题(中): 生产套管的方法
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申请号: US10612160申请日: 2003-07-02
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公开(公告)号: US06842982B2公开(公告)日: 2005-01-18
- 发明人: Yusuke Haga , Toru Okabe , Nobuaki Haga
- 申请人: Yusuke Haga , Toru Okabe , Nobuaki Haga
- 申请人地址: JP Osaka
- 专利权人: Tsubakimoto Chain Co.
- 当前专利权人: Tsubakimoto Chain Co.
- 当前专利权人地址: JP Osaka
- 代理机构: Howson and Howson
- 优先权: JP2002-249757 20020725
- 主分类号: B21J5/08
- IPC分类号: B21J5/08 ; B21K1/00 ; B21K21/08 ; B21K21/12 ; B21K21/16 ; B21L9/00 ; B21L9/02 ; F16G13/06 ; B21D53/10
摘要:
By press-fitting a cylindrical blank into a die with one of a pair of punches, and at the same time press-fitting small diameter end portions and tapered portions of the pair of punches into both ends of the cylindrical blank while restraining both end surfaces of the blank with cylindrical members movable on the outsides of the punches, the external circumferential surface of the blank is finish molded to the required diameter by the internal circumferential surface of the die and, at the same time, tapered surfaces are formed on the inner circumferential surface in both ends of the blank. The process produces a bushing with its internal surfaces accurately coaxial, and with the external surface accurately formed to the required diameter.
公开/授权文献
- US20040020052A1 Method of producing bushing 公开/授权日:2004-02-05
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