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.
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
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