Chapter 4: Data exchange

Title: Assembly modeling approach including assembly process information for mechanical product

Author(s): Zhang Kai-fu, Li Yuan, Yu Jian-feng

Address: The Ministry of Education Key Lab of Contemporary Design and Integrated Manufacturing Technology, Northwestern Polytechnical University, Xi|an 710072, China NO. 127, Youyixi Road, Xi|an, China | The Ministry of Education Key Lab of Contemporary Design and Integrated Manufacturing Technology, Northwestern Polytechnical University, Xi|an 710072, China NO. 127, Youyixi Road, Xi|an, China | The Ministry of Education Key Lab of Contemporary Design and Integrated Manufacturing Technology, Northwestern Polytechnical University, Xi|an 710072, China NO. 127, Youyixi Road, Xi|an, China

Reference: International Conference on Product Lifecycle Management 2007 pp. 253 - 258

Abstract/Summary: Product assembly sequence is directly influenced by API: assembly fixture, assembly tools, assembly operation, and so on. It is important that API is expressed in assembly model in order to achieve good assembly sequence. This paper presents an approach of assembly modeling including API. The basic idea of the approach is to express API in assembly model by building prior relationship and constraint relationship between assembly-cells and API. We analysis and define prior relationship between assembly-cells and API when assembly-cells and API come into and come out from assembly environment. Assembly model including API is built by connected-graph model based on directed graph and undirected graph. Firstly, the directed graph represents the prior relationship between assembly-cells and API when assembly-cells and API come into and come out from assembly environment. Secondly, the undirected graph represents assembly relationship between assembly-cells and API. Thirdly, a connected-graph model is used to integrate the directed graph and the undirected graph. So an assembly model including API appears. The assembly model including API is propitious to express experiences of assembly process and to plan assembly sequence of product. The approach is validated by an example in this paper.

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