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Dynamics of Spindle Assembly Metal-Cutting Machine Tool with Anisotropic Elastic Support

  • A. F. Denisenko
  • M. V. Yakimov
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

The article is devoted to the consideration of bending and translational-angular vibrations of spindles of metal-cutting machine tools. The features of the development of dynamic models associated with the significant difference in the values of the stiffnesses of the front and rear supports and the anisotropy of their radial rigidity are noted. The results of the investigation of the effect on the anisotropy of the radial stiffness of deviations from the roundness of the landing surfaces of the shaft and the shell of the bearings are presented. It has been shown experimentally that the stiffness of the front support of the spindle assembly of the lathe has an anisotropy. For the hodograph of stiffness in the form of ovality, analytical expressions are obtained for the natural frequencies of bending and translational-angular vibrations. It is shown that the presence of anisotropy of the stiffness of spindle supports leads to the appearance of a range of natural frequencies of the spindle which significantly complicates the implementation of diagnostic measures. The results of the estimation of the influence of the elastic characteristics of spindle supports on the assembly of the magnitude and range of the resulted stiffness coefficients and the frequency of the natural translational-angular vibrations are presented.

Keywords

Spindle assembly Bending vibrations Translational-angular vibrations Natural frequencies Stiffness Hodograph of stiffness Anisotropy of the compliance Resulted stiffness coefficient 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Samara State Technical UniversitySamaraRussia

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