发明名称 |
Sheet metal draw die apparatus |
摘要 |
The sheet metal draw die apparatus disclosed is used with a double-acting press for drawing a planar metal sheet to a predetermined nonplanar drawn article. Both the lower and upper dies consist of spaced-apart modules having only male work contact surfaces formed thereon such that the juxtaposition of the upwardly and downwardly facing male work contact surfaces constitute a distinct, continuous surface defining the drawn article.
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申请公布号 |
US4096729(A) |
申请公布日期 |
1978.06.27 |
申请号 |
US19770801775 |
申请日期 |
1977.05.31 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
DUPLER, WILLIAM W. |
分类号 |
B21D24/00;B21D22/02;(IPC1-7):B21D22/02 |
主分类号 |
B21D24/00 |
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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