中文摘要：

在扁袋笼顶盖零件工艺分析的基础上,得出其优化工艺为落料—浅拉深（小于内壁高）—冲孔—内翻边,重点介绍落料拉深复合模的设计和三维建模。为了保证扁袋笼顶盖拉深成功,采用Dynaform软件模拟了扁袋笼顶盖的成形过程,对凸模圆角、凹模圆角和压边力工艺参数进行优化,并得到了其成形极限和减薄量图。结果显示,当凸模圆角5 mm、凹模圆角6.5 mm、压边力为50 kN时成形效果较好,无明显缺陷。

英文摘要：

The process of flat pocket-cage is analyzed,and the optimized process is as follows： blanking,shallow drawing with the drawing height less than inwall height,punching,and inner flanging.We design the compound die combined the blanking and drawing processes and set up the three-dimensional model by Pro/E.Finally the forming process of the flat pocket-cage is simulated by the finite element code Dynaform.The process parameters including punch profile radius,die profile radius and blank holder force are optimized.The obtained Forming Limit Diagram（FLD） and thinning disgram show that the forming quality is appropriate when the punch profile radius,die profile radius and blank holder force are 5 mm,6.5 mm and 50 kN respectively.