Nonlinearity Analysis and Wavelet Package Transform of Measured Chatter Vibrations in Grinding Process
(0) 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.
Grinding process Chatter vibration Wavelet package transform Fractal dimension
Qingkai Han and Bangchun Wen
School of Mechanical Engineering, Northeastern University, Shenyang, China, 110004
国际会议
第14届全国磨粒技术学术会议(14th Conference of Abrasive Technology in China)
南京
英文
494-498
2007-10-26（万方平台首次上网日期，不代表论文的发表时间）