Growing Mechanism of Chatter Vibrations in Grinding Processes and Chatter Stabilization Index of Grinding Wheel

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Description

Self-excited vibration phenomena in grinding processes have characteristics of slowly growing of vibrations, decreasing tendency of vibration frequency, predominance of grinding wheel regenerative chatter vibrations, etc. For constructing and analyzing a dynamic model of such growing phenomena of vibrations, the following two concepts are introduced: The first is a non-dimensional representation of the geometrical interference effect. The second is the concept of root-locus method which involves the analysis of amplitude growing rate for solving the characteristic equation of grinding system. The analysis enables to describe the vibration behaviours in both the frequency domain and the time domain. The application of the analysis to several experiments certifies that the proposed dynamic model can quantitatively describe the characteristic phenomena of chatter vibrations, particularly, the growing rate. Further, a chatter stabilization index of grinding wheel—(wear stiffness)/(contact stiffness) 2 —is proposed for chatter vibration strategy and estimation of chatter limited dressing interval, based on the analysis and the experiments.

Journal

  • CIRP Annals

    CIRP Annals 33 259-263, 1984-01-01

    Elsevier BV

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