Evaluation of Sheet Metal Punching Process Using a Computer Controlled Prototype Hydraulic Press

• Type: Article in International Conference Proceedings Book
• Date: 1991

Authors

Teresa Restivo (Author) FEUP; António José Pessoa de Magalhães (Author) FEUP; Joaquim Gabriel Magalhães Mendes (Author) FEUP; Francisco Freitas (Author) FEUP

Conference proceedings International

Title: Fluid Power Systems Modelling and Control

Pages: 28-43

Fourth Bath International Fluid Power Workshop

Bath, 18 - SETEMBRO - 1991

Other information

Abstract (EN): The use of hydraulic solutions to drive sheet metal working machine tools has been increasing in importance and capabilities as the integration of electronics and computers in fluid power applications is getting more and more effective. The compressibility effect in large actuators is a constant problem when associated with very fast varying loads. This happens, for instance, in the sheet metal cutiing process, where very high loads suddenly disappear when the effective fracture takes place. This paper presents an experimental study carried out on a prototype hydraulic press, specially equipped with instrumentation and control means, in order to identify the behavior of the press when cutting a sheet of metal, attemps to characterize the cutting pattern of different metals and establish some guidelines as to how to control a press in order to prevent it from dissipating uncontrolled energy after the fracture.

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 16