Modeling and algorithm research on machining process of multi-shear and multi-punch base on Petri nets

doi:10.16731/j.cnki.1671-3133.2018.09.007

Abstract

Abstract: Aiming at the problems existing in the CNC transverse shear line of silicon steel sheet,a multi-shear and multi-punch CNC transverse shear line research is carried out for the purpose of realizing multi-shear and multi-punching,flexible system,reducing programming quantity and labor intensity.The mechanical structure and process flow of transverse shear line are analyzed,and the definition of multi-shear and multi-punch is given.The TPN model is established based on the time Petri net,and the relationship of concurrency and conflict is analyzed.The mathematical model with least process step,minimum total moving distance of feed axis and minimum return material is set up,the ordered n-tuple of the multi-step machining is arranged by the parallelism of the transverse shear line.The overall algorithm flow is given,with emphasis on the design and calculation of the algorithm.Finally,an example is given to demonstrate the feasibility and effectiveness of the multi-shear and multi-punch CNC transverse shear line machining model.

Key words: multi-shear, multi-punch, transverse shear line, algorithm research

CLC Number:

TP278

Lu Yongyan, Wu Tingyun, Li Dacheng, Wu Wenqiang, Tao Jianhua. Modeling and algorithm research on machining process of multi-shear and multi-punch base on Petri nets[J]. Modern Manufacturing Engineering, 2018, 456(9): 31-37.

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