This paper dissertate the general framework of Computer Aided Tolerance System, research a series of key questions such as the methods of auto-generation of dimension chain, gives out the prototype program based bn AutoCAD.

• 本文论述了计算机辅助精度设计的总体框架,研究了尺寸链自动生成等关键技术,并开发了基于AutoCAD平台的原型系统,本文的主要研究内容如下: