Chatter Detection in Turning Processes Using Coherence of Acceleration and Audio Signals

Chatter is an unfavorable phenomenon in turning operation causing poor surface quality. Active chatter elimination methods require the chatter to be detected before the control reacts. In this paper, a chatter detection method based on a coherence function of the acceleration of the tool in the x direction and an audio signal is proposed. The method was experimentally tested on longitudinal turning of a stock bar and facing of a hollow bar. The results show that the proposed method detects the chatter in an early stage and allows correcting control actions before the chatter influences the surface quality of the workpiece. The method is applicable both to facing and longitudinal turning.

[1]  Elso Kuljanić,et al.  Multisensor approaches for chatter detection in milling , 2008 .

[2]  Y. S. Tarng,et al.  Automatic selection of spindle speed for suppression of regenerative chatter in turning , 1996 .

[3]  Steven Y. Liang,et al.  Analysis of acoustic emission in chatter vibration with tool wear effect in turning , 2000 .

[4]  H. E. Merritt.  Theory of Self-Excited Machine-Tool Chatter: Contribution to Machine-Tool Chatter Research—1 , 1965 .

[5]  Andrew Y. C. Nee,et al.  Tool wear and chatter detection using the coherence function of two crossed accelerations , 1997 .

[6]  Navaratnam Sri Namachchivaya,et al.  Spindle Speed Variation for the Suppression of Regenerative Chatter , 2003, J. Nonlinear Sci..

[7]  Yung C. Shin,et al.  On-Line Chatter Detection Using Wavelet-Based Parameter Estimation , 2000, Manufacturing Engineering.

[8]  Min Chen,et al.  Control Approaches to the Suppression of Machining Chatter Using Active Magnetic Bearings , 2007, IEEE Transactions on Control Systems Technology.

[9]  Somkiat Tangjitsitcharoen,et al.  In-process monitoring and detection of chip formation and chatter for CNC turning , 2009 .

[10]  S. Smith,et al.  Use of Audio Signals for Chatter Detection and Control , 1992 .

[11]  Tony L. Schmitz,et al.  Improving High-Speed Machining Material Removal Rates by Rapid Dynamic Analysis , 2001 .

[12]  Y. S. Tarng,et al.  A critical investigation of the phase shift between the inner and outer modulation for the control of machine tool Chatter , 1997 .

[13]  Günter Radons,et al.  Application of spindle speed variation for chatter suppression in turning , 2013 .

[14]  Usha Nair,et al.  Permutation entropy based real-time chatter detection using audio signal in turning process , 2010 .

[15]  E. Govekar,et al.  TIME SERIES ANALYSIS IN METAL CUTTING : CHATTER VERSUS CHATTER-FREE CUTTING , 1998 .

[16]  Edvard Govekar,et al.  Using Coarse-Grained Entropy Rate to Detect Chatter in Cutting , 1998 .

[17]  L. N. López de Lacalle,et al.  An automatic spindle speed selection strategy to obtain stability in high-speed milling , 2009 .

[18]  Shan-Fei Bao,et al.  A New Approach to the Early Prediction of Turning Chatter , 1994 .

[19]  Yung C. Shin,et al.  A comprehensive dynamic cutting force model for chatter prediction in turning , 1999 .

[20]  Y. S. Tarng,et al.  Chatter suppression in turning operations with a tuned vibration absorber , 2000 .

[21]  N. H. Abu-Zahra,et al.  Tool Chatter Monitoring in Turning Operations Using Wavelet Analysis of Ultrasound Waves , 2002 .

[22]  Yunn-Shiuan Liao,et al.  A new on-line spindle speed regulation strategy for chatter control , 1996 .

[23]  Yusuf Altintas,et al.  Chatter Stability of General Turning Operations With Process Damping , 2009 .

[24]  S. D. Yu,et al.  Theoretical and Experimental Studies of Chatter in Turning for Uniform and Stepped Workpieces , 2008 .

[25]  Yusuf Altintas,et al.  Optimization of multiple tuned mass dampers to suppress machine tool chatter , 2010 .

[26]  Waleed Fekry Faris,et al.  Image processing for chatter identification in machining processes , 2006 .

[27]  Tony L. Schmitz,et al.  Chatter recognition by a statistical evaluation of the synchronously sampled audio signal , 2003 .