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Chatter Mode and Stability Boundary Analysis in Turning  

Oh Sang-Lok (부경대학교 대학원)
Chin Do-Hun (부경대학교 대학원)
Yoon Moon-Chul (부경대학교 기계공학부)
Ryoo In-Il (부경대학교 기계공학부)
Ha Man-Kyun (부경대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.14, no.5, 2005 , pp. 7-12 More about this Journal
Abstract
This paper presents several time series methods to analyze the chatter mechanics by using the power spectrum of these algorithms considering the cutting dynamics. In this study, several time series models such as AR(burg, forwardbackward, geometric lattice, instrument variable, least square, Yule Walker), ARX(1s, iv4), ARMAX, ARMA, Box Jenkins, Output Error were modeled and compared with one another. Finally, it was proven that time series modelings are also a desirable and reliable algorithm than the other conventional methods(FFT) for the calculation of the chatter mode in turning operation. Also, the spectrum of times series methods is a little bit more powerful than the FFT fer the detection of a high noisy and weak chatter mode. The radial cutting force Fy has been used for spectrum and chatter stability lobe analysis in this study.
Keywords
Chatter mode; Radial cutting force; Stability lobe; Time series method;
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