知识的表示与数据库的构造是开发基于知识的枪管 CAD系统的关键。本文采用规则与框架混合的方法表达设计知识 ,以面向对象的方法构造数据库 ,并在专家系统工具 CL IPS上加以实现。采用参数化设计的方法使设计结果实现了数据与图形的结合。通过综合运用上述技术开发的基于知识的枪管 CAD系统较好地解决了枪械主要零部件——枪管的自动化设计问题 Knowledge representation and database construction are the keys to developing a knowledge-based barrel CAD system. In this paper, a combination of rules and framework to express the design knowledge, object-oriented approach to the construction of the database, and in the expert system tools to achieve CL IPS. The use of parametric design method to achieve the results of the design of the combination of data and graphics. Through the comprehensive use of the above-mentioned knowledge-based development of the gun barrel CAD system to better solve the main components of firearms - automatic design of the barrel