Precision of prestressed ball screw thermal behaviour in machine tool operating conditions
by Zbigniew Kowal; Jerzy Jedrzejewski; Taeweon Gim
International Journal of Nanomanufacturing (IJNM), Vol. 16, No. 1, 2020

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.

Online publication date: Tue, 14-Jan-2020

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