关键词: 高速切削, 领域本体, 本体库, 专家系统

Abstract: To effectively organize and manage High-Speed Machining (HSM) knowledge and to support their sharing and reuse, ontology thought was introduced to represent knowledge. According to HSM knowledge characteristics, the formalization definition of HSM domain ontology was proposed, i.e. concept, relationship, attributes, rules and instances, and HSM domain ontology base was constructed. Then, HSM domain ontology was described and expressed by Backus-Naur Form (BNF) formulations, and was stored in relationship database. Moreover, by using ontology base to replace knowledge base, and a reasoning mechanism based on the combinatorial approach of Case Based Reasoning (CBR) and parameters optimization, an ontology-based HSM expert system was established. This system provided an effective platform for HSM knowledge retrieval, reuse and sharing, and realized utilization of accumulated knowledge in HSM domain.

Key words: high speed machining, domain ontology, ontology base, expert system