发明名称 |
Assembled camshaft |
摘要 |
A camshaft having a steel shaft and cam pieces made from a sintering iron-base alloy material and fixed to the shaft by sintering. Prior to sintering, the green or pre-sintered cam piece is fitted on the shaft and positioned by a steel positioning pin, which is inserted both into a pin-receiving hole in the shaft and into a pin-receiving groove on the side surface of the cam piece. The positioning pin contains carbon less than the steel shaft. This results in that the carbon diffusion initiates at a predetermined position where the pin and the cam piece are in contact with each other and that the cam piece always shrinks about the position.
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申请公布号 |
US4998955(A) |
申请公布日期 |
1991.03.12 |
申请号 |
US19890349773 |
申请日期 |
1989.05.10 |
申请人 |
NIPPON PISTON RING CO., LTD. |
发明人 |
HIRAOKA, TAKESHI;TAKEGUCHI, SHUNSUKE;KAWAI, SATOSHI |
分类号 |
B22F5/00;B22F5/10;B22F7/00;F16H53/02 |
主分类号 |
B22F5/00 |
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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