During the development of the CAD system of gear, this paper introduces expert knowledge into procedure of CAD and actualizes the intellectualization in design process, strength analysis.

• 在齿轮零件CAD系统开发过程中，结合专家系统，将专家知识融入在齿轮零件CAD过程中，实现了设计过程、强度分析的智能化。