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The International Journal of Advanced Manufacturing Technology

Erschienen in:

01.08.2019 | ORIGINAL ARTICLE

Analysis and experimental verification of dynamic characteristics of air spindle considering varying stiffness and damping of radial bearings

verfasst von: Jiasheng Li, Ming Huang, Pinkuan Liu

Erschienen in: The International Journal of Advanced Manufacturing Technology | Ausgabe 5-8/2019

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Abstract

The dynamics of a radial bearing and aerostatic spindle system in an ultraprecision fly-cutting machine cause mid-spatial waviness errors, which have a significant effect on surface topographies. Air bearings, which are externally pressurized, comprise two journal bearings and two thrust bearings with orifice restrictors. The dynamic coefficients of the radial bearings are obtained by adopting the perturbation and finite difference methods with the MATLAB^® software. In addition, the influences of the spindle speed and tilt angle on the dynamics of the radial bearings are investigated in detail. The simulation results show that the rotating speed has a little impact on stiffness but having a great impact on damping, and the theoretical values of static stiffness are almost the same as the experimental values. The dynamic responses of the spindle system supported by pressurized air film are obtained, and the simulation analysis of spindle responses under cutting forces is also well matched to the experiment results.

Vorheriger Artikel Theoretical and experimental analysis of the deformation zone and minimum thickness in single-roll-driven asymmetric ultrathin strip rolling

Nächster Artikel Size effects on geometrical accuracy for additive manufacturing of Ti-6Al-4V ELI parts

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Titel: Analysis and experimental verification of dynamic characteristics of air spindle considering varying stiffness and damping of radial bearings
verfasst von: Jiasheng Li
Ming Huang
Pinkuan Liu
Publikationsdatum: 01.08.2019
Verlag: Springer London
Erschienen in: The International Journal of Advanced Manufacturing Technology / Ausgabe 5-8/2019
Print ISSN: 0268-3768
Elektronische ISSN: 1433-3015
DOI: https://doi.org/10.1007/s00170-019-04121-2

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