Punching process planning modeling based on polychromatic sets theory

Based on study of punching process requirements and processing sequence,the polychromatic sets theory was applied to construct the mathematical model of punching process planning.The model was comprised of a contour comprising matrix and a polychromatic graph,which was used to describe the interaction among working procedures.An algorithm to search the punching process path according to the machining requirements of parts was designed based on this model.A prototype system of punching process planning was developed,and a case of a columnar part was given to verify the proposed model and the algorithm.