汽车覆盖件成形回弹仿真及模面优化研究

回弹是汽车覆盖件冲压成形时产生的主要质量缺陷之一,直接影响到覆盖件产品的尺寸精度和最终形状。以某汽车覆盖件为例,利用板料成形仿真软件Dynaform实现了零件的冲压成形和回弹模拟,重点预测了实际板料冲压成形后可能出现的回弹量,并优化模具型面来控制回弹。通过将仿真结果与实际生产合格零件作对比,验证了优化方案的合理性和仿真模拟的准确性,对汽车覆盖件模具生产制造具有重要的指导意义。

Research on spring-back simulation and die surface optimization of automotive panel forming process

The spring-back phenomenon in automotive panel forming is one of the main quality problems, which may affect the tolerance and final shape of panel products. The stamping and spring-back process simulation for the automtive panel were realized by using the Dynaform software, emphasizing on the possibly spring-back quantity forecasted and the die surface was optimized to control spring-back. The reasonability of optimization scheme and veracity of simulation were proved by comparing the simulation result with the eligible part obtained. And it provides a significant guidance to the manufacture of the automotive panel dies.