发明公开
EP1526931A1 VERFAHREN ZUR MATERIALFLUSSSTEUERUNG BEIM TIEFZIEHEN VON BLECHEN UND TIEFZIEHWERKZEUG 有权
对料流控制方法在板和成形工具的深冲

  • 专利标题: VERFAHREN ZUR MATERIALFLUSSSTEUERUNG BEIM TIEFZIEHEN VON BLECHEN UND TIEFZIEHWERKZEUG
  • 专利标题(英): Method for controlling the material flow during the deep-drawing of sheet metal, and deep-drawing tool
  • 专利标题(中): 对料流控制方法在板和成形工具的深冲
  • 申请号: EP03764920.9
    申请日: 2003-06-14
  • 公开(公告)号: EP1526931A1
    公开(公告)日: 2005-05-04
  • 发明人: LÖSCH, Alfred
  • 申请人: Nothelfer GmbHLösch, Alfred
  • 申请人地址: Bleicherstrasse 7 D-88212 Ravensburg DE
  • 专利权人: Nothelfer GmbH,Lösch, Alfred
  • 当前专利权人: Nothelfer GmbH,Lösch, Alfred
  • 当前专利权人地址: Bleicherstrasse 7 D-88212 Ravensburg DE
  • 代理机构: Dahlkamp, Heinrich-Leo, Dipl.-Ing.
  • 优先权: DE10233008 20020720
  • 国际公布: WO2004009263 20040129
  • 主分类号: B21D24/04
  • IPC分类号: B21D24/04 B21D22/22
VERFAHREN ZUR MATERIALFLUSSSTEUERUNG BEIM TIEFZIEHEN VON BLECHEN UND TIEFZIEHWERKZEUG
摘要:
The invention relates to a method for controlling the material flow during the deep-drawing of sheet metal, the edges of the sheet metal (1) being compressed between at least one upper stopper (13) and at least one lower stopper (6, 7) during the deep-drawing process, with a controllable elastic force (8, 9). The invention also relates to a corresponding deep-drawing tool. According to the invention, a Z-shaped blocking step (11) is stamped into the edge (1a) of the sheet metal when the upper and lower stoppers (13, 6, 7) are closed, the basic shape is then produced by deep-drawing, maintaining the blocking step (11) and completely blocking the sheet metal between the stoppers, said sheet metal (1) being outwardly stretched, and the blocking step (11) is then reduced in terms of height, facilitating the outward displacement of the sheet metal towards the outside. The deep-drawing tool is characterised in that the lower stopper consists of an inner stopper (6) and an outer stopper (7), which are arranged in an annular manner on the edge of the sheet metal (1) and can be displaced in relation to each other in the holding direction.
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