Structural Modeling of Heterogeneous CAM Model Based on Process Knowledge Graph

With the deepening of digital design and manufacturing technology, different commercial CAM systems have been widely applied in enterprises, and a huge number of heterogeneous CAM models have been generated in the repository. A structural modeling method of heterogeneous CAM model based process knowledge graph is presented in this paper to realize the reuse and sharing of heterogeneous CAM models created by product manufacturing activities. Firstly, based on features, coupled features and part level respectively, a multi-hierarchy and multi-attribute process knowledge model is constructed, which is the bridge of data exchange and sharing for heterogeneous CAM models. Then, the ontology models of heterogeneous CAM systems are established, and the preliminary unique semantic representation is acquired by using the multi-strategy similarity mapping method. Finally, the implied semantic and the accuracy of mapping results are obtained through rule reasoning, to enrich the process knowledge graph with the unique representation. A prototype system is developed to verify the effec-tiveness of the proposed approach.