发明名称 Progressive and transfer die stamping
摘要 Numerous embodiments of a method to form a base plate for a hard disk drive are described. In one embodiment, a blank base plate is advanced through plurality of die stations and parts of the base plate are press worked to form a disk drive base plate. In one embodiment, the blank base plate may be press worked by stamping the base plate with a progressive die assembly. In an alternative embodiment, the blank base plate may be press worked by stamping the base plate with a transfer die assembly.
申请公布号 US7849578(B2) 申请公布日期 2010.12.14
申请号 US20090455090 申请日期 2009.05.27
申请人 CHEUNG WOH TECHNOLOGIES, LTD. 发明人 YING LAW KUNG
分类号 B21D39/03;B23P13/04 主分类号 B21D39/03
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