汽车变速销模锻成形有限元分析及实验验证

Finite element analysis and test verification on mould forging for automobile transmission pin

针对汽车变速销的形状、尺寸以及材料性能等特点,选定了单工步开式模锻的成形方法。使用CAE有限元分析软件Deform-3D对初始工艺方案进行仿真研究,分析了材料成形过程中的热、力情况,否定了初始工艺方案的可行性。从坯料尺寸、坯料温度以及模具结构3个方面出发,对成形工艺进行改进,制定了3套改进方案,并通过模拟方法得到较优工艺,即:坯料尺寸为Φ17 mm×47.5 mm,坯料温度为700℃,在凹模上增加Φ60 mm×0.2 mm的飞边槽以及在凸模前端设置1个Φ12 mm×0.5 mm的凸起。采用改进后的模具及优化工艺进行实验验证,证明了该工艺的可行性。

For the shape,size and material performance of automobile transmission pin,the single step open mould forging was chosen,and the initial process scheme was simulated by CAE finite element analysis software Deform-3D. Then,thermal and mechanical conditions in the material forming were analyzed,but the feasibility of initial process was denied. From three aspects of billet size,billet temperature and mould structure,three sets of improved forming process were formulated,and a better one was obtained by simulation with billet size of Φ17 mm × 47. 5 mm,billet temperature of 700 ℃,fash slot of Φ60 mm × 0. 2 mm on female mould,and protuberance ofΦ12 mm × 0. 5 mm on the front-end of male mould. Furthermore,the improved mould and optimized process were verified by test,and the resibility of the process was proved.