本文简述了Petri网的基本知识,给出了基于Petri网的制造过程建模与分析的方法及步骤。在此基础上,针对轻型汽车变速器的二档齿轮和锥体合件的制造过程,建立其Petri网模型,并进行了相应分析,分析结果表明该合件的制造工艺过程正确性。 This article briefly describes the basic knowledge of Petri nets and gives the methods and steps of manufacturing process modeling and analysis based on Petri nets. On this basis, the Petri nets model is established for the manufacturing process of the second gear and the conical part of the light vehicle transmission, and the corresponding analysis is made. The analysis results show that the manufacturing process of the part is correct.