发明授权
- 专利标题: Method and apparatus for hot die draw forming metal sheets
- 专利标题(中): 热冲模成型金属板的方法和装置
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申请号: US477452申请日: 1990-02-09
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公开(公告)号: US5035133A公开(公告)日: 1991-07-30
- 发明人: Robert T. White , Thomas J. Liebig , Jeffrey K. Switzer
- 申请人: Robert T. White , Thomas J. Liebig , Jeffrey K. Switzer
- 申请人地址: CA Chula Vista
- 专利权人: Rohr Industries, Inc.
- 当前专利权人: Rohr Industries, Inc.
- 当前专利权人地址: CA Chula Vista
- 主分类号: B21D25/02
- IPC分类号: B21D25/02
摘要:
A method and apparatus for draw forming a metal sheet over a male form to produce a three-dimensional shape. A sheet of metal is clamped between upper and lower draw plates positioned above the male form. The upper plate has an edge conforming to the male form shape. The plates and sheet are moved downwardly over the form with the edge of the upper plate firmly pressing the sheet against the form. The clamping pressure between the draw plates allows suitable slippage as drawing proceeds to produce a drawn shape of intended thickness. The drawn shape has a configuration conforming to the outer surface of the male form and has an outer surface of improved uniformity and appearance due to the wiping action of the upper plate edge.
公开/授权文献
- US4434832A Room temperature curable tire patch 公开/授权日:1984-03-06
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