Design and application of pliable blank holder systems for the optimization of process conditions in sheet metal forming
Design and application of pliable blank holder systems for the optimization of process conditions in sheet metal forming
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DOI：
10.1016/s0924-0136(01)00506-4
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发表时间：
2001-04
影响因子：
6.3
通讯作者：
E. Doege;Lars Elend
中科院分区：
文献类型：
--
作者：
E. Doege;Lars Elend
本文提出了一种新的拉深压边保持器概念。目的是实现更均匀的坯料保持器压力。坯件保持器设计为可弹性变形的薄钢板，使得偏转是可能的并且是期望的。与板材接触的坯件保持器板安装在支撑元件上并附接到由压销承载的刚性基板。因此，柔韧的坯件保持器能够在深冲压过程中根据板厚度的变化进行自我调节。其结果是法兰中的压力分布均匀，并改善了深冲过程中的材料流动。在实验中使用的所选择的坯料保持器板厚度和支撑元件的布置是基于FEM模拟的结果。
In this paper, an innovative blank holder concept for deep drawing is presented. The aim is to achieve a more homogeneous blank holder pressure. The blank holder is designed as an elastically deformable thin steel plate, so that deflection is possible and desired. The blank holder plate, which is in contact with the sheet, is mounted on support elements and attached to a rigid base plate, which is carried by the press pins. Therefore, the pliable blank holder is able to adjust itself to the changes in sheet thickness during the deep drawing process. The result is an uniform pressure distribution in the flange and improved material flow during deep drawing. The selected blank holder plate thickness and the arrangement of the support elements, used in the experiments, are based on the results of FEM-simulations.