关键词: 矩形件, 可加工性, 顺序价值校正, 同质块, 共边切割, 切割成本, 智能制造

Abstract: Formulating a cutting plan for machinability-oriented is the prerequisite and foundation for intelligent manufacturing.Aiming at the problem of multi-specification rectangular cutting stock,considering the multi-objective optimization problems such as high material utilization rate and short cutting path,a machinability-oriented optimization method for rectangular cutting stock problem was proposed in intelligent manufacturing environment.A block cutting strategy was defined,which optimized the cutting path by using the common-edge characteristics between the homogeneous strips in block and between the items in the strip to reduce the cutting cost.When designing the placement of the strip using the prospective method,not only the present strip utilization rate should be considered,the overall utilization rate of the plate after the present strip was placed also be considered.The sequential value correction iterative algorithm was used to obtain multiple feasible cutting plans,and the plan with the smallest comprehensive cost was selected.Through multiple sets of benchmark calculation tests,the effectiveness and practicability of the proposed method were confirmed,and Pareto improvement of multi-objective optimization was achieved.

Key words: rectangular items, machinability, sequential value correction, homogenous blocks, common-edge cutting, cutting cost, inelligent manufacturing