Simulation of energy flow in hydraulic drives of forming machines

Abstract

This paper reports on the results of the authors’ research on the problem of simulating hydraulic drives. Two developments of complex hydraulic drive systems are being used as examples for prototypical forming machines (the tryout press and spin extrusion machine). The means and methods used for the numerical simulation of the hydraulic systems will be presented based upon the developed model and we will then add a calculation of the energy flow in the system to these means and methods. An outlook on including thermal interactions will round out and conclude our deliberations.

Keywords:

• Hydraulic
• Simulation
• energy flow
• drives
• forming machine tools

Additional information

Notes on contributors

R Neugebauer

Prof Dr-Ing habil. Prof E h Dr-Ing E h Reimund Neugebauer

• Born on June 27, 1953 in Esperstedt am Kyffhäuser, Germany

• Diploma – Mechanical Engineering, Major Machine Tool Design at the Dresden University of Technology (TU Dresden), Germany; degree in 1979

• Scientific Assistant and Senior Scientific Assistant at the TU Dresden (1979-1984); Doctorate: Computer Assisted Preparation of FEM for Machine Tool Structures (1984)

• Various (inclusively supervisory) positions at Umformtechnik ERFURT (1985-1989); Post-Doctorate: Development of Flexible Sheet Metal Processing Systems (1989, TU Dresden)

• Professor for Machine Tools and Production Equipment Design at the TU Dresden (1989-1992)

• Managing Director of the Fraunhofer Institute for Machine Tools and Forming Technology IWU (since 1992) and of the Chemnitz University’s Institute for Machine Tools and Production Processes (since 2000); Dean of the Fakulty of Mechanical Engineering, University of Technology Chemnitz (since 2003)

• Member of the Arbeitsgemeinschaft Umformtechnik (AGU); member of the German Academic Society for Production Engineering (WGP); corresponding member of the International Institution for Production Engineering Research (CIRP) and President of the Saxon Industry Association “Industrieverein Sachsen 1828 e. V.”

• Honorary Doctorate at the Technical University of Kuzbass and at the Moscow State Technological University STANKIN

S Noack

Dr-Ing Dirk Klug

• Born in Sonneberg, Germany on October 30, 1964

• Processing Machine Design with deepened Computer Science education at the Chemnitz University of Technology (TU Chemnitz), Germany; degree in 1992

• Scientific Assistant at the Institute for general mechanical engineering of the TU Chemnitz (1992-1994)

• Scientific Assistant in the designing department of the Flöha FZM GmbH (1995)

• Scientific Assistant at the chair for control engineering of the TU Chemnitz (1995-1997)

• Scientific Assistant at the Fraunhofer Institute for Machine Tools and Forming Technology (since 1998)

• Doctorate: Hydraulic Drives with speed-controlled Electric Motor (TU (Chemnitz, 2000)

D Klug

Dr-Ing Steffen Noack

• Born in Pirna, Germany on January 14, 1957

• Automation and Complex Mechanization of Machine Tools at the Moscow State Technological University (STANKIN Moscow), Russia; degree in 1980

• Scientific Assistant at the Dresden University of Technology (TU Dresden) (1980-1991); Doctorate: Contribution to Modelling and Design of a Contactless Opto-electronic Flow Rate Sensor for Hydraulic Systems (1989)

• Scientific Assistant at the Fraunhofer Institute for Machine Tools and Forming Technology IWU (since 1991)

• Group Manager Fluid Power Systems at the Fraunhofer Institute for Machine Tools and Forming Technology (since 1994)