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Title: Precision of prestressed ball screw thermal behaviour in machine tool operating conditions

Authors: Zbigniew Kowal; Jerzy Jedrzejewski; Taeweon Gim

Addresses: Institute of Production Engineering and Automation, Wroclaw University of Technology, Wroclaw, Poland ' Institute of Production Engineering and Automation, Wroclaw University of Technology, Wroclaw, Poland ' DOOSAN Infracore Corporation, Korea

Abstract: This paper presents an FEM model of a feed drive with a ball screw stiffness-wise, thermally and motion-wise integrated with the machine tool structure. The model takes into account the moving heat sources, the frictional and inertial interaction of the masses being shifted and the variable thermoelastic and stiffness interactions within the drive and the machine tool load-bearing structure. The results of heating up and displacement calculations for the ball screw, the bearing supports and the whole machine tool are analysed with regard to positioning accuracy.

Keywords: machine tool; ball screw; model.

DOI: 10.1504/IJNM.2020.104478

International Journal of Nanomanufacturing, 2020 Vol.16 No.1, pp.29 - 39

Accepted: 30 Nov 2017
Published online: 19 Dec 2019 *

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