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Evaluation of Draw Beads Influence on Intricate Shape Stamping Drawing Process

机译:拉延筋对复杂形状冲压拉延过程的影响评估

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Paper concerns evaluation of influence of shape, size and location of rectangular and semicircular draw beads on sheet-metal forming process. For analysis the simulations of forming process of selected two types of intricate shape stampings with similar ground plan and with approximately the same height from steel strip DC04 with the use of models of optimal blanks made by BSE (Blank Size Engineering) modul of simulation program Dynaform 5.7 were carried out. From simulations of forming process in simulation program Dynaform 5.7 followed that the most suitable is drawing without use of draw beads because cracks in stamping bottom corners do not arise. In the case of undesirable secondary waviness in the walls of intricate shape stamping the drawing with draw beads could be used but it would be necessary to increase the radius at the bottom of both stampings alternatively to choose another material with higher formability.
机译:本文涉及评估矩形和半圆形拉延筋的形状,大小和位置对钣金成形过程的影响。为了进行分析,使用由模拟程序Dynaform构成的BSE(空白尺寸工程)模块制作的最佳毛坯模型,模拟了选择的两种类型相似,平面图相似,距钢带DC04高度近似的复杂形状冲压件的成形过程模拟进行了5.7。通过在模拟程序Dynaform 5.7中对成型过程进行模拟,得出最适合的方法是在不使用拉延筋的情况下进行拉延,因为不会在冲压底角产生裂纹。在复杂形状的壁中出现不希望的二次起伏的情况下,可以使用带有拉珠的冲压模具,但是有必要增加两个冲压模具底部的半径,或者选择另一种具有较高成形性的材料。

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