发明申请
- 专利标题: STAMPING APPARATUS
- 专利标题(中): 冲压装置
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申请号: US13100346申请日: 2011-05-04
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公开(公告)号: US20120279272A1公开(公告)日: 2012-11-08
- 发明人: Dajun Zhou , Changqing Du , Yang Hu , Yongjun Zhou
- 申请人: Dajun Zhou , Changqing Du , Yang Hu , Yongjun Zhou
- 主分类号: B21D22/22
- IPC分类号: B21D22/22
摘要:
The present disclosure provides stamping apparatus for stamping a blank. The stamping apparatus includes a first die and a blank-holding ram. The first die includes a forming cavity and a depression positioned outboard of the forming cavity. The depression is defined by a first corner proximate the forming cavity and a second corner distal the forming cavity in the outboard direction from the first corner and the forming cavity. The blank-holding ram includes a bead configured to engage a portion of the blank into the depression when the blank is positioned between the first die and the blank-holding ram. The bead includes a third corner proximate the forming cavity and a fourth corner surface distal the forming cavity in the outboard direction from the third corner. The first corner of the depression includes a radii of curvature greater than a radii of curvature of the second corner of the depression and the radii of curvature of the third and fourth corners of the bead.
公开/授权文献
- US09149854B2 Stamping apparatus 公开/授权日:2015-10-06