介绍了齿轮类零件的工艺规程自动生成系统。该系统直接从CAD系统中获取零件的有关信息，依据所建立的特征体素描述方法，自动生成零件的特征编码，采用零件自动识别的方法实现CAD／CAPP的信息集成，利用工艺知识库，通过工艺决策模型的分级推理，实现齿轮类零件的工艺过程设计的自动化。 This paper introduces the automatic process system of gear parts. The system directly obtains the relevant information of the parts from the CAD system, automatically generates the feature codes of the parts according to the established feature voxel description method, adopts the automatic recognition of parts to realize the CAD / CAPP information integration, uses the technology knowledge base, Process decision-making model classification reasoning to achieve the gear parts of the process design automation.