图论法在解零件加工工艺尺寸链中的应用

Application of Graph Theory Model for Solving Dimension Chain in Technologic Process of Component Part Machining

图论法是解零件加工工艺尺寸链的一种新方法，已在机械行业得到初步应用。为保证图论法能正确用于解尺寸链，特给出了一个定义和两个约定，并介绍了用图论法解尺寸键的步骤，最后给出了应用实例。按所述两个约定和步骤解尺寸链，方法简捷直观，不易出错。

Using the graph theory model for solving the dimension chain in technologic process of component part machining is a new mode. To ensure correct use of this method, the authors give the definition and two criteria, introduce the procedure for solving the dimension chain by the method, and present an example of application.