Title: Application of Petri Net in the planning of a shearing-cut and bending progressive die workstation

Authors: Zone-Ching Lin, Ching-Hua Deng

Addresses: Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Republic of China. Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Republic of China

Abstract: The method for analysing the strip workstation of shearing-cut and bending progressive dies is studied. First, the Petri Net model is used to construct the work conditions and synthesizing method of each workstation of the shearing-cut and bending progressive die. The model is able to clearly represent the systems hierarchy and dynamic work conditions such as the upper and lower dies offset displacement during the shearing-cut and bending process and the sheet springback during the process. It is thus capable of planning the work conditions of every workstation of the shearing-cut and bending progressive die. These conditions include: strip message communication through various workstations, the communication of the compensator message for the upper and lower die offset displacement and the communication of sheet springback. The model can distinctively express the design of supporting theories and the planning of information communication during the machining process.

Keywords: shearing-cut and bending progressive die; Petri Net; planning.

DOI: 10.1504/IJMPT.2001.001282

International Journal of Materials and Product Technology, 2001 Vol.16 No.6/7, pp.579-591

Published online: 01 Jul 2003 *

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