轿车翼子板内板的成形工艺数值模拟研究  

Simulation Study on Forming Process of Inner Panel of Automobile Front Fender

作　　者：权国政[1] 王贵华[1] 张光华[1] 刘克威[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》2009年第17期84-86,共3页Hot Working Technology

基　　金：科技部技术创新项目(07C26215110824)

摘　　要：将某型轿车翼子板内板的形状分析归纳为五大部分,提出了一套成形工艺流程,并在流程中对部分工序进行了复合。设计一组压边力方案:100kN、200kN、300kN,利用数值模拟软件对浅拉深工序进行仿真。发现对于该零件要消除斜筋部位破裂,一味减小压边力不可行,需要考虑调大入模圆角。在消除了破裂缺陷之后,要控制起皱则需要增大压边力,同时也可考虑将起皱区域锁定到零件的无效区域(即后续需要切除的区域)。最后确定成形压边力300kN、入模圆角R5mm时,成形无缺陷。According to the shape character of inner panel of one automobile front fender, a shaped process in which part working procedure was combined was brought forward. Based on FEM software, the drawing process was simulated by a blank-holder force scheme 100 kN, 200 kN, 300 kN. As the simulation results, in order to eliminate the fractures in diagonal reinforcements, it is infeasible only to decrease blank-holder force, but enlarging the die round comer is necessary. As fractures are eliminated, in order to eliminate wrinkles, the blank-holder force needs to be increased. Otherwise the wrinkle region can be confined into useless area which needs to he cut off. Finally none forming defects occur as blank-holder force 300 kN and die round comer 5 mm.

关 键 词：翼子板 拉深 起皱 破裂 

分 类 号：TG386[金属学及工艺—金属压力加工]