- 专利标题: STAMPING APPARATUS HAVING A PART-TIME DRAW BEAD
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申请号: US17347801申请日: 2021-06-15
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公开(公告)号: US20220395884A1公开(公告)日: 2022-12-15
- 发明人: Dajun Zhou , Chunlei Wang , Robert D Miller , Kaiping Li , Yongjun Zhou , Richard J Siemen
- 申请人: Dajun Zhou , Chunlei Wang , Robert D Miller , Kaiping Li , Yongjun Zhou , Richard J Siemen
- 申请人地址: US MI Troy; US MI Rochester Hills; US MI Lake Orion; US MI Shelby Township; US MI Rochester Hills; US MI Shelby Township
- 专利权人: Dajun Zhou,Chunlei Wang,Robert D Miller,Kaiping Li,Yongjun Zhou,Richard J Siemen
- 当前专利权人: Dajun Zhou,Chunlei Wang,Robert D Miller,Kaiping Li,Yongjun Zhou,Richard J Siemen
- 当前专利权人地址: US MI Troy; US MI Rochester Hills; US MI Lake Orion; US MI Shelby Township; US MI Rochester Hills; US MI Shelby Township
- 主分类号: B21D22/22
- IPC分类号: B21D22/22 ; B21D22/06 ; B21D37/10
摘要:
A stamping apparatus that includes an upper die, a blank-holding binder, and fixed lower die. The fixed lower die features a drawing punch and the upper die features a corresponding cavity. The fixed lower die includes a stake bead and a corresponding depression is present on the upper die. The blank-holding binder includes a draw bead and a corresponding depression is present on the upper die. In the stamping process, the draw bead engages a blank in a first stage, causing the blank to begin to stretch into the shape of the drawing punch with a greater tightened partially finished panel shape. In a second stage, the draw bead disengages the blank as the blank is drawn towards the drawing punch. In a final stage, the stake bead engages the blank to tighten the blank around the drawing punch into a final shape.