发明名称 METHOD AND DEVICE FOR PRODUCING LOW-SPRINGBACK HALF SHELLS
摘要 A method for producing low-springback half shells made of a metal, in particular steel or a steel alloy, includes drawing in at least one drawing die a blank, such that the blanks have flange regions on the deep drawn body after the deep drawing. The flange regions are shaped by upsetting a corner substantially perpendicularly to a wall of the deep drawn region of the blank and the flange regions are subsequently trimmed in a shearing die, such that half shells without margins are produced.
申请公布号 EP2012947(A1) 申请公布日期 2009.01.14
申请号 EP20070728390 申请日期 2007.04.23
申请人 THYSSENKRUPP STEEL AG 发明人 FLEHMIG, THOMAS;HOEMIG, LOTHAR;SAVVAS, KONSTANTINOS
分类号 B21D22/22 主分类号 B21D22/22
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