发明名称 |
Drawing helical springs from spring steel |
摘要 |
During drawing, the material is heated continuously to change the yield point and zone according to the required path of reduction of the material cross-section. Pref. the material is grasped by two clamping jaws. During heating, one or both of these is moved to draw the material. |
申请公布号 |
DE1932314(A1) |
申请公布日期 |
1971.01.07 |
申请号 |
DE19691932314 |
申请日期 |
1969.06.26 |
申请人 |
VOLKSWAGENWERK AG |
发明人 |
BERNHARD BAUERNSTEIN,DR.-ING. |
分类号 |
B21C1/00;B21C9/00;B21F9/00 |
主分类号 |
B21C1/00 |
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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