轿车油底壳冲压成形数值模拟研究

Research on numerical simulation of stamping of car oil pan

研究以Auto Form软件为平台结合CATIA软件实现"模面驱动"有限元仿真技术。以深拉延件轿车油底壳为例,首先,通过研究其三维建模图,确定了制件成形工序。在对制件材料进行定制,并通过Auto Form软件,建立了制件多步冲压成形过程中关键工序的有限元模型。然后,对所建立有限元模型仿真计算,获得了拉延、整形、切边和翻边工序的模拟结果,模拟结果满足设计要求。最后,通过实冲制件的检具与三维坐标仪的检测数据评判,验证了轿车油底壳多工位连续冲压成形数值模拟的有效性。

This paper realizes the finite element simulation technology of＆quot;die surface drive＆quot;based on AutoForm software which is combined with CATIA software. Take the case of deep drawing of car oil pan, it determines the forming process through the research of the three-dimensional modeling diagram firstly. Then the parts material are customized and the finite element model of the key working procedure in the multi step stamping process is established by AutoForm software. After that, the finite element model is simulated and calculated. Simulation results for drawing, shaping, trimming and flanging process are obtained which can meet the design requirements. Finally, the validity of the numerical simulation of the multi station continuous stamping process of the car oil chassis is verified by the testing data of the workpiece and the 3D coordinate measuring instrument.