EVALUATION METHOD OF ASSEMBLY SEQUENCES

An evaluation method of assembly sequences includes the steps of designing an assembly composed of a plurality of parts; preparing a component relation diagram indicating the joint relation between the plurality of parts; reducing assembly sequences containing infeasible subassemblies by computing weights of all the subassemblies in the respective processes of an AND/OR tree structure of the assembly; evaluating feasible assembly sequences obtained from the CRD by the evaluation function EQU E(q)=W.sub.h .multidot.f(H(q))+W.sub.j .multidot.f(J(q))+W.sub.i .multidot.f(T(q)) where q is an assembly sequence, E(q) is an evaluation function, W.sub.h, W.sub.j and W.sub.i are weighting factors for ease of part handling, ease of part joining, and tool changes criteria, respectively, f is a scaling function, H(q) is the sum of the weights of all subassemblies for the assembly sequence q, J(q) is number of joining direction changes for the assembly sequence q, T(q) is the number of tool changes for the assembly sequence q; and performing assembly in the assembly sequences depending on the evaluation result.