通过刚塑性有限元法对AZ80镁合金杯形构件四种不同结构形式的凸模旋转反挤压成形过程进行了数值模拟,分析了凸模形状对成形载荷—行程曲线、应力场和应变场的影响规律;并且研究了不同凸模沟槽锥角对成形过程的影响。结果表明:挤压凸模端面开槽数目越多,轴向载荷就越小、等效应力和等效应变越大;小角度的沟槽锥角的构件等效应变较大。 The rigid-plastic finite element method was used to simulate the forming process of four different configurations of the cup die of AZ80 magnesium alloy. The effects of the shape of the punch on the forming load-stroke curve, stress field and strain field Influence law; and study the impact of different male and female groove taper angle on the forming process. The results show that the larger the number of the slotted face, the smaller the axial load, and the greater the equivalent stress and equivalent strain. The equivalent strain of the member with small angle taper is larger.