发明授权
- 专利标题: Method of forming outer ring of constant velocity joint
- 专利标题(中): 形成恒速接头外圈的方法
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申请号: US217926申请日: 1998-12-22
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公开(公告)号: US6055838A公开(公告)日: 2000-05-02
- 发明人: Tsukashi Ohama , Tomonori Nakamura , Mikio Kobayashi , Yuichi Nagao , Yoshihisa Doi
- 申请人: Tsukashi Ohama , Tomonori Nakamura , Mikio Kobayashi , Yuichi Nagao , Yoshihisa Doi
- 申请人地址: JPX Tokyo
- 专利权人: Honda Giken Kogyo Kabushiki Kaisha
- 当前专利权人: Honda Giken Kogyo Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX9-353292 19971222
- 主分类号: B21J5/06
- IPC分类号: B21J5/06 ; B21K1/14 ; B21K1/76 ; B21D22/00
摘要:
A forge-molding method for forming a constant velocity joint outer ring comprising a shaft and a cup formed integral with and expanding radially and outwardly from one end of the shaft is provided. The method uses an ironing die apparatus which is provided with a lower molding die, an upper molding die and an ironing punch. The lower molding die is provided with a first cavity formed to have a final degree of product accuracy with respect to the shaft and adapted to apply a final ironing process to the shaft, while the upper molding die is provided with a second cavity for restraining the outer peripheral surface of the cup. Consequently, the accuracy of concentricity between the shaft and the cup can be securely maintained in a simple manner and a sufficient degree of accuracy of the inner peripheral surface and/or the inner diameter of the cup can be effectively secured.