轿车引擎盖外板拉深模具型面的设计及优化

Optimization design on designing surface of drawing die for automobile hood outer panel

通过对某轿车车身覆盖件的引擎盖外板拉深模具型面的设计,介绍了复杂型面拉深件拉深模具型面的设计流程,研究了复杂型面拉深件拉深模具型面的造型设计方法和原则。利用板料成形分析有限元软件Dynaform对引擎盖外板的拉深成形过程进行仿真模拟,探讨了仿真过程中出现的质量缺陷(如破裂、起皱、变形不足等)的原因,并针对这些现象对拉深模具型面进行优化设计改进。并根据仿真模拟结果,制造加工了合格的拉深件模具。对于复杂型面拉深件的拉深模具的设计和制造具有一定的指导意义。

The designing process of drawing die for complex surface drawing part in designing the drawing model of the automotive hood outer panel surface and the design method and principle were studied. The stamping process using the sheet metal forming analysis software Dynaform was simulated. The reason causing quality defect in simulation, such as cracking and wrinkle etc. , was investigated. Based on these reasons, the design of drawing die surface for automo bile hood outer panel was optimized. According to the simulated results, the qualified drawing die was made, which had a instructing meaning for the design and manufacture of drawing die for complex surface drawing part.