Study on conceptual design system of injection molding based on ontology

The theory of ontology is applied to research on conceptual design system for injection molding in this paper. The ontology-based system frame model and conceptual information model of a conceptual design for injection molding are constructed, and the description methods of injected part feature unit, injection molding function unit, injection molding structure unit and conceptual design knowledge which make up of conceptual information model are studied, then the related ontology description model and detail case are also given. On this foundation, a self-adaptive cooperative reasoning model based on knowledge and case is proposed. With the application of ontology-based conceptual information model for injection molding, a conceptual design prototype system for injection molding is developed. Not only the description granularity of case and knowledge model is refined, but also the reasoning flexibility of conceptual design is improved in the system.