发明名称 |
Verfahren zur Herstellung einer Lagerschale oder Buchse oder Rolle für eine Kette |
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, |
申请公布号 |
DE19604325(B4) |
申请公布日期 |
2004.01.29 |
申请号 |
DE1996104325 |
申请日期 |
1996.02.07 |
申请人 |
TSUBAKIMOTO CHAIN CO., OSAKA |
发明人 |
OTANI, TOMOFUNI;MAEDA, SACHIHIKO;SASAMOTO, SHUJI;TAMAKI, MASAHARU;NAKAGAWA, TAKERO;YOSHIMURA, YOSHITAKA;KOBAYASHI, HIROSHI |
分类号 |
B21D3/14;B21L9/00;F16C13/00;F16G13/06;(IPC1-7):F16G13/00;F16C33/10 |
主分类号 |
B21D3/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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