根据结构等强度优化理论,利用拉美公式优化得出凹模各层尺寸及层间过盈量,得出平端面组合凹模的优化结构;分析了端面倾角和阶梯高度以及两者共同作用时组合凹模应力状况,并拟合出组合凹模的最大等效应力与阶梯高度和端面倾角的函数关系。结果表明,在其他条件相同的情况下,阶梯式斜端面组合凹模具有更高强度。 According to the optimization theory of structural isosceles and so on, the Latin American formula was used to optimize the dimensions of the layers and the interference between the layers to obtain the optimal structure of the flat end combination die. The combination of the end face inclination and the step height as well as their interaction The results show that the maximum equivalent stress of the composite die is fitted as a function of the height of the step and the inclination of the face. The results show that, with other conditions being equal, the stepped beveled composite die has higher strength.