某型号曲轴在辊锻制坯阶段模具磨损严重,导致成形时出现折叠。为了解决此问题,选取过渡圆角、入模圆角、过渡斜度三个关键参数,以降低磨损量为目标,基于正交试验进行模具结构优化研究。结果显示,当过渡斜度为40°,过渡圆角为25 mm,入模圆角为20 mm时,磨损量最小。通过生产试制验证了此次优化改进的合理性和正确性。 A model crankshaft in the roll forging blank stage die wear serious, resulting in the formation of folding. In order to solve this problem, three key parameters, transition fillet, die fillet and transition gradient, were selected to reduce the amount of wear. Based on the orthogonal test, the die structure optimization was studied. The results show that when the transitional slope is 40 °, the transitional fillet is 25 mm and the fillet radius is 20 mm, the wear amount is the smallest. Through the trial production trial to verify the rationality and correctness of this optimization.