Issue of Rigidity of the Ball Screw Nut Exposed to Bending Stress during Bending Stress of the Ball Screw

Lubomír W. Novotný; Jiří Marek; Tomáš Marek

doi:10.4028/www.scientific.net/AMM.821.372

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 821Issue of Rigidity of the Ball Screw Nut Exposed to...

Issue of Rigidity of the Ball Screw Nut Exposed to Bending Stress during Bending Stress of the Ball Screw

Abstract:

Ball screws and nuts represent the inseparable part of machinetool building. The thread lead accuracy ranges in hundredths of millimetres per 1 m. In addition to the undesirable phenomena caused by heat (dilatability) and, e. g., torsional and transverse oscillations, the bending stress of the ball screw is considerably undesirable too. This stress and at the same time behaviour are transferred to the bending stress of the ball screw nut. This has a very harmful influence on setting of the ball screws, when the machine tool is assembled. Using the analysis by means of the FEM method, the paper conducts a survey of deformation issue of the arrangement "machine – ball screw – ball screw nut" during the assembly stage as well as a survey of compensation possibilities and other technical measures determined to limit the undesirable deformations and stress of the ball screw originating already in the manufacturing stage of the machine tool.

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Periodical:

Applied Mechanics and Materials (Volume 821)

Pages:

372-377

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.821.372

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Online since:

January 2016

Authors:

Lubomír W. Novotný*, Jiří Marek, Tomáš Marek

Keywords:

Ball Screw, Bending Loading, FEM Calculations, Geometric Precision, Laser, Machine Tool, Machine Tool Axis, Nut

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