齿环精锻成形工艺参数的多目标优化设计  

Multi-objective Optimization of Forming Process Parameters for Synchronizer Ring Precision Forging

作　　者：王梦寒[1] 夏知姿 李雁召[1] 王文浩[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《热加工工艺》2015年第13期154-156,共3页Hot Working Technology

基　　金：科技部国家重大专项项目(CDJXS12131109);中央高校基本科研业务费资助项目(CDJXS12131109)

摘　　要：汽车同步器齿环在精密成形过程中局部容易出现应力集中和严重的材料损伤等缺陷。基于田口理论建立了材料损伤、最大等效应力分布和成形载荷的多目标优化模型。通过有限元模拟获得了同步器齿环精锻成形时的最优成形工艺参数组合:坯料初始温度650℃,凸模下压速率200 mm/s,摩擦因子0.45。经过生产试制获得了良好成形性能的同步器齿环。Local stress concentration and the serious damage of material occurred frequently during the forming process of the automobile synchronizer ring precision forging. A multi-objective optimization model of material damage, the maximum equivalent stress distribution and forming load was established based on Taguchi theory. The optimal process parameters of the synchronizer ring precision forging were obtained through the FE simulation. The initial billet temperature is650℃, the punch reduction velocity is 200 mm/s and the friction factor is 0.45. The synchronizer rings with an excellent property were obtained by the trial production.

关 键 词：田口理论 多目标优化 同步器齿环 

分 类 号：TG316[金属学及工艺—金属压力加工]