发明授权
- 专利标题: Rolled part for chain and manufacturing method therefor
- 专利标题(中): 轧制部件为链条及其制造方法
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申请号: US595997申请日: 1996-02-06
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公开(公告)号: US5697206A公开(公告)日: 1997-12-16
- 发明人: Tomofumi Otani , Sachihiko Maeda , Shuji Sasamoto , Masaharu Tamaki , Takero Nakagawa , Yoshitaka Yoshimura , Hiroshi Kobayashi
- 申请人: Tomofumi Otani , Sachihiko Maeda , Shuji Sasamoto , Masaharu Tamaki , Takero Nakagawa , Yoshitaka Yoshimura , Hiroshi Kobayashi
- 申请人地址: JPX 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: JPX Osaka
- 优先权: JPX7-041400 19950207; JPX8-009488 19960123
- 主分类号: B21D3/14
- IPC分类号: B21D3/14 ; B21L9/00 ; F16C13/00 ; F16G13/06 ; B21L9/02
摘要:
The present invention improves accuracy in the axial dimension of rolled parts for a chain such as bushings, rollers and similar. A rolled part is manufactured by cutting a strip of steel into a rectangular shape to obtain a rectangular base material having a predetermined dimension, The rectangular base material is rolled into a clindrical shape to obtain a cylindrically formed part having cut end surfaces face each other. A core is inserted for rolling the rectangular base material into the cylindrically formed part. The cylindrically formed part is then pressed through a die having a circular opening. The rolled part has a plurality of blind grooves on a surface thereof. While the cylindrically formed part is being pressed through the die having a circular opening, a plastic flow of the material of the cylindrically formed part intensively occurs in a direction toward the blind grooves. Since the plastic deformation of the rolled part is absorbed by the blind grooves, axial dimension of the rolled part hardly varies,
公开/授权文献
- US5116213A Industrial drum molding 公开/授权日:1992-05-26