A synthetical modelling for machine tool feed drives Online publication date: Thu, 06-Oct-2016
by Shuting Wang; Lei Xiao; Haiying Zhang; Weidong Gou
International Journal of Materials and Structural Integrity (IJMSI), Vol. 10, No. 1/2/3, 2016
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.
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