以面向对象思想为指导 ,将功能分析法和面向对象方法相结合 ,建立了零件工艺过程设计问题域的O -O模型 抽取零件、特征和工艺规程三大对象类 ,合理地定义了其中的类层次结构、属性的方法 ,并将工艺过程设计问题域进行了功能细化 讨论了面向对象的CAPP系统程序结构 Taking the object-oriented thinking as the guidance, the functional analysis method and the object-oriented method are combined to establish the O-O model extraction part, feature and process specification three object classes in the part process design problem domain, and reasonably define the class Hierarchy, attributes, and process design features of the domain of functional refinement discussed object-oriented CAPP system program structure