关键词: 知识重用, 柔性编码, 飞机钣金制造, 知识库

Abstract: The knowledge reuse method (MMU) framework including part modeling, knowledge modeling and knowledge utilization was presented. The feature-based information model and code structure oriented to aircraft sheet metal part were constructed, and each code digit was defined by value domain of its relevant feature item. To ensure the flexibility of representing the diversified structure features, a new approach coding the structure configuration was proposed by means of combining 2-tuple ordered pair of all two relevant structure elements. This flexible part-coding scheme was used for part representation and knowledge modeling. The method was explained by applying to sheet metal part process planning, and the establishing method of knowledge base was also provided. Example showed that the manufacturing knowledge could be retrieved by code matching quickly and properly. Finally, the validity of the method was analyzed.

Key words: knowledge reuse, flexible coding, aircraft sheet metal manufacturing, knowledge base