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Analytical Model, Multibody Simulation and Validation Tests for Dynamical Instability Reduction of a Grinding Machine With Dampers

[+] Author Affiliations
Claudio Braccesi, Filippo Cianetti, Luca Landi

University of Perugia, Perugia, Italy

Paper No. DETC2011-47712, pp. 1351-1363; 13 pages
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5478-5
  • Copyright © 2011 by ASME


The subject of the present paper is the dynamic instability (chatter) of machine tools. The chatter is a self-regenerative oscillatory phenomenon related to the tool-work piece interaction during the process; that leads to an incorrect surface finishing of work piece. In big machine tools passive damping components are often introduced in order to reduce the chatter. Those passive components have to be tuned to the natural frequency of chatter vibrations, measured experimentally or predicted theoretically. In this paper the reduction of chatter for a planar grinding machine is described. At first, a theoretical model for the prediction of the general chatter for planar milling will be described through two lumped parameters and a multi body numerical model. Moreover the correlation between the theoretical model and experimental measures in terms of receptance will be presented. Two different kinds of passive damper systems will be theoretically introduced. In the end, the experimental results for chatter reduction obtained with the passive dampers introduction will be shown.

Copyright © 2011 by ASME



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