Experimental Verification of Chatter-Free Ball End Milling Strategy
Lin Lu*, Masahiko Sato**, and Hisataka Tanaka**
*Kyocera Document Solutions Inc., 1-2-28 Tamatsukuri, Chuo-ku, Osaka 540-8585, Japan
**Graduate School of Engineering, Tottori University, 4-101 Minami, Koyama-cho, Tottori 680-8552, Japan
Chatter vibration frequently occurs in ball end milling. If the characteristics of the cutting tool system and cutting process are known, chatter stability in ball end milling can be evaluated. Hence, in this paper, a chatter-avoidance strategy based on a regenerative chatter theory is proposed to prevent the occurrence of chatter. This consists of a simulation of chatter stability and cutting condition control. When the characteristics of a vibration system change, this chatter-avoidance strategy cannot cope with it. Therefore, another chatter-avoidance control algorism that changes cutting parameters on a machining center is proposed. This can adapt to the change in the characteristics of the vibration systemduring cutting. The effectiveness of the two chatter-avoidance methods proposed is examined through experiments.
-  Y. Altintas, E. Shamoto, P. Lee, and E. Budak, “Analytical Prediction of Stability Lobes in Ball End Milling,” Trans. ASME J. Manufact. Sc. Eng., Vol.129, No.4, pp. 586-592, 1999.
-  F. Abrari, M. A. Elbestawi, and A. D. Spence, “On the Dynamics of Ball End Milling: Modeling of Cutting Forces and Stability Analysis,” Int. J. Mach. Tools Manuf., Vol.38, No.3, pp. 251-255, 1998.
-  K. Seto, “Effect of a Variable Stiffness-Type Dynamic Absorber on Improving the Performance of Machine-Tools with a Long Overhung Ram,” Annals of the CIRP, Vol.27, No.1, pp. 327-332, 1978.
-  K. J. Kim and J. Y. Ha, “Suppression of Machine Tool Chatter Using a Viscoelastic Dynamic Damper,” Trans. ASME, J. Eng. Ind., Vol.109, February, pp. 58-65, 1987.
-  T. Matsubara, H. Yamamoto, and H. Mizumoto, “Chatter Suppression by Using Piezoelectric Active Damper,” ASME Design Tech. Conf., DE, Vol.18, No.2, pp. 79-83, 1989.
-  H. Tanaka, F. Obata, M. Ashimori, and T. Matsubara, “Study on Regenerative Chatter Vibration in Ball End Milling (1st Report) – Theoretical Analysis of Chatter Stability Limit,” J. of the Japan Society for Precision Engineering, Vol.64, No.7, pp. 1047-1051, 1998.
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