论述了基于三维建模软件I-deas的工装CAD系统中工装知识库系统的结构、功能及其子库实现方法，分析了子库之间的相互关系。以开发的工装设计管理系统中工装知识库系统开发为例，描述了知识库系统与工装设计管理系统的集成。

The frame, function and achievement method of knowledge sub-database in computer aided equipment design system based on I-deas are introduced according to the principle of Knowledge Based Engineering. The relations among the sub-databases are analyzed. Finally, the integration of the knowledge database and equipment design and management system is described in the computer aided equipment design system based on I-deas.