基于有限元模拟探究拔模斜度对锻件成形的影响

Effect of Draft Angle on Forging Forming Based on Finite Element Simulation

针对曲轴模锻生产中普遍存在的平衡块充填困难、材料利用率低下的问题,对常规曲轴预锻模具的拔模斜度进行了优化。通过变换预锻模具的拔模斜度值并构建有限元模型分别对其进行模拟分析,发现不同的拔模斜度值对曲轴终成形效果的影响很大,并与实验结果相一致。最终通过有限元模拟分析找到了最佳的拔模斜度值使终锻件充填饱满,达到了要求。

Aiming at the lack of filling material and low material utilization during die forging of crankshaft, the draft angle of preform die for conventional crankshaft was optimized. The finite element model was built. And then effect of different draft angles in perform die on finish-form of crankshaft was simulated. The results show that draft angle has a great effect on finish-form,which are accord with the experimental results. Finally, through the finite element analysis, optimal draft angle was found to make final forging full and meet demand of forging.