Parametric design combined with mechanical engineering practice, the issue that transforms a draft drawing into a parametric drawing program is put forward and researched deeply.

结合参数化设计和机械工程的实际，提出并深入研究了从静态草图到参数化绘图程序的自动转换问题。

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In the specific engineering practice, if the program is wrong, the development design related will waste more time and money.

在具体的工程实践中，如果因为方案有误而进行相应的开发设计，会浪费较多的时间和经费。

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Practice proves that the program can calculate accurately with a very high precision and reliability. It can speed up the design of complicated tools greatly.

经实践证明该程序运算准确，精确度及可靠性很高，可大大加快复杂刀具的设计。

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