CAFixD: A case-based reasoning fixture design method. Framework and indexing mechanisms

被引:39
作者
Boyle, IM
Rong, K
Brown, DC
机构
[1] Worcester Polytech Inst, Comp Aided Mfg Lab, Worcester, MA 01609 USA
[2] Worcester Polytech Inst, Dept Comp Sci, Worcester, MA 01609 USA
关键词
case-based reasoning; retrieval-by-adaptability; axiomatic design; fixture design;
D O I
10.1115/1.2161229
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
Fixtures accurately locate and secure a part during machining operations. Various computer-aided fixture design (CAFD) methods have been developed to reduce design costs associated with fixturing. One approach uses a case-based reasoning (CBR) method where relevant design experience is retrieved from a design library and adapted to provide a new design solution. Indexing design cases is a critical issue in CBR, and CBR systems can suffer from an inability to distinguish between cases if indexing is inadequate. This paper presents CAFixD, a CAFD methodology that adopts a rigorous approach to defining indexing attributes based upon axiomatic design functional requirement decomposition. A design requirement is decomposed in terms of functional requirements, physical solutions are retrieved and adapted for each individual requirement, and the design is then reconstituted to form a complete fixture design. This paper presents the CAFixD framework and operation, and discusses in detail the indexing mechanisms used.
引用
收藏
页码:40 / 48
页数:9
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