发明名称 |
Manufacture of yokes for dynamo electric machines |
摘要 |
A method of manufacturing a yoke for a dynamo electric machine wherein a transversely divided two-part mandrel is inserted into a hollow ferromagnetic sleeve of wall thickness and diameter equal to that of the required yoke. The mandrel defines the shape of the poles to be produced on the yoke and a plurality of punches are driven radially inwardly towards the yoke to deform the material of the sleeve into the dies defined by the recesses of the punches.
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申请公布号 |
US4154082(A) |
申请公布日期 |
1979.05.15 |
申请号 |
US19770846156 |
申请日期 |
1977.10.27 |
申请人 |
LUCAS, JOSEPH (INDUSTRIES) LTD |
发明人 |
BEECH, KEITH J W |
分类号 |
B21D17/02;H02K1/14;H02K15/02;(IPC1-7):B21K1/26 |
主分类号 |
B21D17/02 |
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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