基于dynaform的汽车隔热板成形性能研究

摘要

The aim of this study was to investigate the main forming defects of automobile thermal baffle and to obtain a good quality of thermal baffle part by optimization of process parameters. Firstly,a theoretical analysis was implemented on the impact of process parameters on the quality of the thermal baffle part. Based on ETA/dynaform software platform,the forming process simulation for thermal baffle was carried out. Then the process parameters were optimized by orthogonal experiment method. Through analysis of the forming quality of each forming process parameter,the optimal combination of parameters was screened out for good thermal baffle. Simulation and verification were carried out on the condition of optimal parameters. The results showed that the quality of thermal baffle was satisfying,providing guidance for the production. Friction coefficient and blank holder force(BHF)were the biggest influencing factors on shaping and the quality. To ensure good lubrication conditions was an important condition to obtain qualified thermal baffle during the actual production process.%目的：针对汽车隔热板的主要成形缺陷问题，通过工艺参数优化，获得成形质量良好的隔热板零件。方法首先对影响隔热板成形质量的工艺参数进行了理论分析，基于ETA/dynaform软件平台对隔热板的成形过程进行了模拟，然后通过正交实验优化对各工艺参数进行了优化。结果分析各成形工艺参数组合下的汽车隔热板成形质量情况，筛选出了隔热板成形质量良好的最优参数组合。结论采用最优参数进行模拟验证，模拟结果显示隔热板的成形质量较优，为生产实际提供了参考；摩擦因数、压边力对成形质量的影响最大，实际生产过程中，保证良好的润滑条件是获得合格隔热板零件的重要条件。