为减少复杂空间曲面薄板成形模具研制周期,提高设计成功率,提出一种基于体变形法的复杂空间曲面薄板冲压模面的快速设计方法。首先采用有限元法模拟以理想产品曲面为模面的板料冲压成形过程,得到冲压板料节点的位移向量和内力。然后用前向回弹法迭代求解得到补偿模面,其中每个迭代步都涉及到点到面的重构过程,引进体变形算法加快模面重构速度和提高模面重构质量。最后通过混凝土搅拌车螺旋叶片实验验证本文算法的有效性。分析试验结果得到:使用体变形算法后三块叶片的平均计算时间减少26.1%,表明体变形算法加快了计算速度;回弹补偿后三块叶片的平均回弹偏差减少85.1%,表明本文算法回弹补偿效果明显。 In order to reduce the development cycle and improve the design success rate, a rapid design method based on volume deformation method is proposed for the stamping die surface of complex space curved surface. First, finite element method is used to simulate the sheet metal stamping process with the ideal product surface as the mold surface, and the displacement vector and internal force of the stamped sheet metal node are obtained. Then, the compensation mode is obtained iteratively by using the forward rebound method. Each iteration step involves the point-to-plane reconstruction process. The introduction of the body deformation algorithm accelerates the speed of the model surface reconstruction and improves the quality of the surface reconstruction. At last, the effectiveness of the proposed algorithm is verified by experiments on concrete mixer screw blades. The experimental results show that the average calculation time of three leaves is reduced by 26.1% after the body deformation algorithm is used, which indicates that the body deformation algorithm accelerates the calculation speed. The average springback deviation of three leaves after springback compensation is reduced by 85.1% Play compensation effect is obvious.