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产品特征建模是ＣＡＤ／ＣＡＭ集成的基础。本文提出了基于特征的产品定义模型。描述了回转体零件的特征类库，讨论了精度信息和其它非形状信息的表达方法以及它们与形状信息之间的关系，使ＣＡＤ／ＣＡＭ集成的实现成为可能。
Product feature modeling is the foundation of CAD / CAM integration. This paper presents a feature-based product definition model. Describes the feature library of the parts of the revolving body, discusses the methods of expressing the precision information and other non-shape information, and their relationship with the shape information, so that the realization of CAD / CAM integration is possible.