Research of analytic hierarchy process applying for case based reasoning in automotive welding jig design

On the basis of the structure of automotive welding jigs, the welding jig case database is constructed in this paper. The analytic hierarchy process (AHP) is applied for partitioning the influence factors of automotive welding jig case unit. The weight calculation and weighted coefficient distribution of case unit properties is presented adopting 1 – 9 scaling algorithm. Thus similarity can be calculated using neighbor similarity. The system case based on reasoning for welding jig case database is developed with VC++6.0 and NX8.0 CAD software, which satisfies the design requirement of rapidity, high efficiency, flexibility and portability.