A Virtual Machine Concept for Real-Time Simulation of Machine Tool Dynamics

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Author(s): Anders Jönsson, Johan Wall, Göran Broman
Title: A Virtual Machine Concept for Real-Time Simulation of Machine Tool Dynamics
Journal: International Journal of Machine Tools and Manufacture
Year: 2005
Volume: 45
Issue: 7
Pagination: 795-801
ISSN: 0890-6955
Publisher: Elsevier
ISI number: 000228207300007
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Mechanical Engineering (Sektionen för teknik – avd. för maskinteknik)
School of Engineering S- 371 79 Karlskrona, School of Engineering S- 371 79 Karlskrona
+46 455 38 50 00
Authors e-mail: anders.jonsson
Language: English
Abstract: When designing CNC machine tools it is important to consider the dynamics of the control, the electrical components and the mechanical structure of the machine simultaneously. This paper describes the structure and implementation of a concept for real-time simulation of such machine tools using a water jet cutting machine as an application. The concept includes a real control system, simulation models of the dynamics of the machine and a virtual reality model for visualisation. The real-time capability of the concept, including the simulation of electrical and rather detailed mechanical component models is proofed. The validation process indicates good agreement between simulation and measurement, but suggests further studies on servo motor, connection and flexibility modelling. However, already from the initial simulation results presented in this paper it can be concluded that the influence of structural flexibility on manufacturing accuracy is of importance at desired feeding rates and accelerations. The fully automated implementation developed in this work is a promising base for dealing with this trade-off between productivity and accuracy of the manufacturing process through multidisciplinary optimisation.
Subject: Mechanical Engineering\General
Mechanical Engineering\Structural Dynamics
Mechanical Engineering\Structural Mechanics
Keywords: Dynamics, Machine Tools, Mechatronics, Real-Time Simulation, Virtual Machine