Title: A synthetical modelling for machine tool feed drives

Authors: Shuting Wang; Lei Xiao; Haiying Zhang; Weidong Gou

Addresses: School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China ' School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China ' Qinghai Huading Industries Co. Ltd, Xining 810018, China ' Qinghai Huading Industries Co. Ltd, Xining 810018, China

Abstract: The machine dynamic performance depends on not only the mechanical structure and components but also the control system and electronic drives. This paper proposes a holistic integrated dynamic design and modelling approach, which supports analysis and optimisation of the feed drive system dynamic performance at the early design stage. The modelling and simulation cover the dynamics of the machine structure, moving components, control system and the machining process. Based on the theoretical derivation, a co-simulation platform for machining centre (MC) has been established and it consists of the generation of tool path instructions, AC servo control system, multi-body system dynamics and elasticity. Using the integrated platform, a real-time simulation of a CAM trajectory curve is presented, whose result indicates that the proposed simulation platform can be used to analyse and evaluate overall dynamic characteristics of high-speed MC.

Keywords: dynamic modelling; simulation; machine tool feed drives; lumped elasticity; machine tool design; machine dynamics; machining centres; tool path generation; AC servo control; multi-body system dynamics; CAM trajectory curve; high speed machining.

DOI: 10.1504/IJMSI.2016.079644

International Journal of Materials and Structural Integrity, 2016 Vol.10 No.1/2/3, pp.52 - 62

Available online: 05 Oct 2016 *

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