关键词: 工艺成熟度, 集成定义建模理论, 分层递阶, 模型评估, 工艺失效知识

Abstract: According to the parallelism of product design and process planning in product development process and the regular pattern from roughness to precision of product design information,the product design process was divided into conceptual process,rough process,detail process and modified process of four job levels.Each level's main process activities were modeled by Integrated Computer Aided Manufacturing DEFinition method (IDEF),and the hierarchical process maturity model of four levels was constructed.Aiming at the information coarseness of conceptual process layer,the maturity evaluation based on product characteristic was proposed.For the information fineness of process improvement layer,the process maturity was evaluated by process failure knowledge.The proposed model was verified in an intelligent computer aided process planning system for automobile parts manufacture,and the result showed that it was helped to forward the process design stage and improve the manufacture reliability.

Key words: process maturity, integrated computer aided manufacturing definition method, hierarchical, model evaluation, process failure knowledge