筒形件拉深成形工艺的虚拟实验研究

Simulation Study on Drawing Process for Cylinder Parts by FEM

在毛坯材料、凸模、凹模和压边圈等条件相同的情况下,利用DYNAFORM软件及其有限元计算的方法,选取毛坯网格(BLANK)大小分别为1.0,0.5,0.25mm;上模层(PUNCH)均为1.5mm的三种组合参数,对筒形件的成形过程进行模拟试验。结果显示毛坯网格大小为0.25mm上模层为1.5mm的试验参数是最佳的,它所对应的拉深成形工艺性是最佳的。

Finite element method of DYNAFORM was used to simulate the forming process of tube-shaped parts, under the same conditions including workblank, punch, die and blank holder. The three selected combination parameters are 1.0, 0.5 and 0.25mm size of blank grid （BLANK） and 1.5mm size of upper die Layer （PUNCH）. Simulation results showed that in the three test parameters, the 0.25mm rough grid （with 1.Smm upper die Layer） yields the best deep drawing process.