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针对级进模结构特点 ,提出了能完整描述级进模组成部件功能及约束的约束树模型 ,并采用基于变量表达式的约束求解方法实现了级进模装配模型的快速更新。该方法为实现基于约束的自顶向下的级进模结构设计奠定了基础
According to the characteristics of progressive die structure, a constrained tree model is presented to describe the functions and constraints of the progressive die assembly. The constraint model based on variable expression is used to realize the rapid updating of the progressive die assembly model. This method lays the foundation for realizing top-down hierarchical structure design based on constraint