Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Kinematical Characteristics of Vibration Assisted Cutting Device Constructed with Parallel Piezoelectric Stacked Actuators

평행한 적층 압전 액추에이터로 구성된 진동절삭기의 기구학적 특성 고찰

  • 노병국 (한성대학교 기계시스템공학과) ;
  • 김기대 (대구가톨릭대학교 기계자동차공학부)
  • Received : 2011.10.07
  • Accepted : 2011.11.09
  • Published : 2011.12.20
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Abstract

The kinematic characteristics of cutting device significantly affects cutting performance in 2-dimensional elliptical vibration cutting(EVC) where the cutting tool cuts workpiece, traversing a micro-scale elliptical trajectory in a trochoidal motion. In this study, kinematical characteristics of EVC device constructed with two parallel stacked piezoelectric actuators were analytically modeled and compared with the experimental results. The EVC device was subjected to step and low-frequency(0.1 Hz) sinusoidal inputs to reveal only its kinematical displacement characteristics. Hysteresis in the motion of the device was observed in the thrust direction and distinctive skew of the major axis of the elliptical trajectory of the cutting tool was also noticed. Discrepancy in the voltage-to-displacement characteristics of the piezoelectric actuators was found to largely contribute to the skew of the major axis of the elliptical trajectory of the cutting tool. Analytical kinematical model predicted the cutting direction displacement within 10 % error in magnitude with no phase error, but in estimating the thrust direction displacement, it showed a $27^{\circ}$ of phase-lag compared with the measured displacement with no magnitude error.

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References

  1. Shamoto, E. and Moriwaki, T., 1994, Study on Elliptical Vibration Cutting, Annals of the CIRP, Vol. 43, No. 1, pp. 35-38. https://doi.org/10.1016/S0007-8506(07)62158-1
  2. Moriwaki, T. and Shamoto, E., 1995, Ultrasonic Elliptical Vibration Cutting, Annals of the CIRP, Vol. 44, No. 1, pp. 31-34. https://doi.org/10.1016/S0007-8506(07)62269-0
  3. Ma, C., Shamoto, E., Moriwaki, T. and Wang, L., 2004, Study of Machining Accuracy in Ultrasonic Elliptical Vibration Cutting, International Journal of Machine Tools and Manufacture, Vol. 44, No, 12, pp. 1305-1310. https://doi.org/10.1016/j.ijmachtools.2004.04.014
  4. Cerniway, M. A., 2001, Elliptical Diamond Milling: Kinematics, Force, and Tool Wear, M.S. thesis, North Carolina State University.
  5. Negishi, N., 2003, Elliptical Vibration Assisted Machining with Single Crystal Diamond Tools, M.S. thesis, North Carolina State University.
  6. Brocato, B. C., 2005, Micromachining using Elliptical Vibration Assisted Machining(EVAM), M.S. thesis, North Carolina State University.
  7. Brehl, D. E. and Dow, T. A., 2008, Review of Vibration Assisted Machining, Precision Engineering, Vol. 32, Issue 3, pp. 153-172. https://doi.org/10.1016/j.precisioneng.2007.08.003
  8. Kim, G. D. and Loh, B. G., 2008, Characteristics of Elliptical Vibration Cutting in Micro V-grooving with Variations of Elliptical Cutting Locus and Excitation Frequency, Journal of Micromechanics and Microengineering, Vol. 18, No. 2, pp. 1-12, Doi:10.1088/0960-1317/18/2/025002.
  9. Loh, B. G. and Kim, G. D., 2011, Characteristics of Rotational Vibration of Cutting Edge in Elliptical Vibration Cutting by Modulation of Excitation Frequency, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 21, No. 3, pp. 258-263. https://doi.org/10.5050/KSNVE.2011.21.3.258
  10. Dynamic Operation Fundamentals, http://www.physikinstrumente.com/en/products