【摘要】 介绍一个基于特征和约束的冷冲模标准模架CAD系统的总体结构、产品结构图形库和约束文件的建立，以及模架类零件的自动生成方法。更多还原

【Abstract】 This paper describes the architecture of an advanced CAD/CAM system for blanking die based on features and dimension constraints, following with the discussion of the parts graphbase construction and the constraint files structure as well as the automatic generation method of mould parts.更多还原