So it is very necessary to exploit a practical CAD system for panel trimming and punching die design.
所以，针对覆盖件开发一套实用的修边冲孔模cad系统无疑是十分必要的。
Based on analysing the typical structure of trimming and punching dies, the author proposes a CAD system for panel trimming and punching die structure design based on functional component.
在分析汽车覆盖件修边冲孔模典型结构的基础上，提出了一种基于功能组件的修边冲孔模cad系统结构。
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