基于几何补偿的回弹零件模具形面设计

板料回弹对零件的精度影响很大。为了减轻重量,铝等材料的大量使用,使回弹问题更加突出,增加了模具设计的难度与周期。传统的试错法将耗费大量的人力和物力。利用有限元模拟几何补偿对U形件模具形面进行回弹补偿,然后将获得的补偿形面转化为CAD数据,实现回弹零件模具型面的设计,为后继的模具结构设计、制造提供依据。最后总结了回弹零件模具形面设计流程。

Design of Die Face for Springback Part by Geometry Compensating

The springback affects the dimensional accuracy of sheet metal parts.For reducing the weight,the Al and other material are applied wildly,which makes spingback more severe.Thus,the die design is more difficult.The compensating springback by FEM was described.Then,the FEM data is converted into CAD.So the die face of springback is done.Finally,the schedule of design die face by FEM is summarized.