径向分块双压边圈轴对称拉深成形工艺研究

Research on Axisymmetrical Deep Drawing Process Based on Radial Double Segmental Blank-holder Technique

为提高板材拉深成形的成形极限并获得更好的压边效果,提出了轴对称拉深成形工艺的径向分块压边方法。采用理论分析、有限元模拟以及实验研究的方法,对圆筒形零件分别在双压边圈和整体压边圈作用下的拉深成形过程进行了分析研究。研究结果表明,与传统压边方法相比,采用径向分块压边方法可以对径向不同变形质点分别压边,有效提高拉深成形极限,并获得更好的压边效果。

A radial segmental blank-holder technique was proposed herein for axisymmetrical deep drawing process to improve blank-holder effect and raise the forming limit.Deep drawing processes under single and segmental blank holder were analyzed theoretically,experimentally and by finite element method respectively.The results for forming process of cylindrical parts show that it can carry out blank holding for different radial deformation zones by radial segmental blank-holder technique.Also,the blank-holder effect is enhanced more effectively and the forming limit increases by radial double segmental blank-holder technique comparing with that by conventional one.