Nonlinearity Analysis and Wavelet Package Transform of Measured Chatter Vibrations in Grinding Process

Qing Kai Han; Bang Chun Wen

doi:10.4028/www.scientific.net/KEM.359-360.494

Paper Titles

The Modeling and Finite Elements Simulation for Pressure Field of Abrasive Jet Precision Finishing With Grinding Wheel as Restraint
p.474

Real-Time Measurement and Compensation for Wheel Wear in Curve Grinding Based on Image Processing Method
p.479

Fractal Tool-Path Planning for Free-Form Surface Polishing System
p.484

Apply Image Registration to the Wear Measurement and Analysis of Different PVD-Coating Drills
p.489

Nonlinearity Analysis and Wavelet Package Transform of Measured Chatter Vibrations in Grinding Process
p.494

Detection of Grinding Surface’s Quality Based on Image Technique
p.499

A Fundamental Study on the Digital Recognition of Grinding Wheel
p.504

Analysis and Simulation of Grinding Wheel Surface Topography
p.509

Evaluation and Measurement of 3D Form Errors of Ground Curve Surface
p.513

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Nonlinearity Analysis and Wavelet Package Transform of Measured Chatter Vibrations in Grinding Process

Abstract:

In grinding process, chatter vibrations known as self-excited vibrations, become increasingly problematic and must be avoided. Firstly, experimental measurements of chatter vibrations in a numerical control (NC) grinding machine tool are introduced for the case of a special alloy workpiece being carried on. Then, frequency spectra of chatter vibrations are analyzed. The wavelet package transform technique is used to describe original chatter signals in the term of scaled energy of frequency bands. At last, fractal dimensions of the reconstructed signals in consecutive frequency bands of chatter vibrations are calculated. These results are helpful for understanding of the nonlinearity of chatter vibrations.