车灯反射镜充液拉深变液压力与变压边力研究  

Research of Variable Fluid Pressure and Blank Holder Force of Hydromechanical Deep Drawing for Automobile Light Reflector

作　　者：骆协海[1] 雷君相[1] 汪奇超[1] 朱彦[1] 

机构地区：[1]上海理工大学材料成形与模具研究所,上海200093

出　　处：《热加工工艺》2012年第1期67-69,共3页Hot Working Technology

基　　金：上海市自然科学基金资助项目(06ZR14143)

摘　　要：采用充液拉深新工艺,以车灯反射镜为研究对象,首先提出运用变液压力和变压边力优化组合的方法,结合正交设计,运用板料成形数值模拟专用软件ETA/Dynaform5.6进行成形数值模拟,得到了最优液压力和压边力组合数值;其次根据毛坯在拉深过程中的成形情况,设计出了液压力和压边力加载曲线;最后通过实验验证了该加载曲线的拉深效果。结果表明,采用最优变液压力和变压边力进行拉深所得到的成形零件不起皱,不破裂,回弹量和减薄率均小,而且零件厚度分布较均匀。Adopting the new process of hydromechanical deep drawing,taking automobile light reflector as the research object,first,it was proposed that using the method of optimized variable liquid pressure and variable blank holder force,the special software ETA / Dynaform5.6 of sheet metal forming simulation was adopted to simulate forming process combining with orthogonal design,the numerical combination of the optimal hydraulic pressure and blank holder force was gained;secondly,according to the forming conditions of deep drawing process,the load curve of variable liquid pressure and the variable blank holder force was designed;finally,the effect of the loading curve was verified by the experiment.The results show that the forming parts have no wrinkle,no fracture,have minimum springback and thinning ratio,and the thickness distribution of parts is uniform.

关 键 词：充液拉深 数值模拟 变液压力 变压边力 加载曲线 

分 类 号：TG386[金属学及工艺—金属压力加工]