【摘要】 本文说明了洛阳工学院研制的“冲裁模CAD系统”的技术经济特征。并以此“冲裁模CAD系统”为实例,说明结点法在处理图形输入和尺寸公差标注方面的应用。文章重点说明应用结点法输入图形时,解决未知结点的数学方法——平面解析几何原理及有利于程序化的数模转化方法。此文还论述了应用结点法输入尺寸公差标注时,解决结点值图形化在AUTOCAD状态下的函数建立方式。文章以实际理论和“冲裁模CAD系统”绘制的模具图充分论证了结点法的实用意义及优点。更多还原

【Abstract】 This paper introduces the technico-economic characteristics of the " CAD system of blanking die design" developed by Luoyang Institute of Technobgy, and describes the application of the node method in the treatments of graph inputting and dimension tolerance notes. The emphasis is on explaining the mathematical method to determine unknown nodes when the node method is used to input graphs. In addition, this paper describes the establishment process of function expression under AUTOCAD software package condition when the node method is used to input dimension tolerance.更多还原