Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

Elliptical Vibration Cutting with Variable Trajectory for Ultra-precision Micro-Machining

초정밀 미세가공을 위한 궤적 변화에 따른 타원 궤적 진동 절삭

  • 김기대 (대구가톨릭대학교 기계자동차공학부) ;
  • 노병국 (한성대학교 기계시스템공학과)
  • Published : 2007.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

A cutting device capable of generating various shapes of the cyclic elliptical trajectory of a cutting tool was proposed and micro v-grooving experiments were performed to investigate the characteristics of elliptical vibration cutting (EVC). The proposed cutting device is comprised of a pair of parallel piezoelectric actuators with which harmonic voltages of varying phase difference and magnitude are supplied, creating various shapes of the elliptical tool path. The attributes of the elliptical locus involving the direction of the axis of an ellipse, the rotational direction and amplitudes of a trajectory were fine-tuned for stable operation of the EVC. The EVC characteristics performed with brass and copper revealed reduction in the cutting resistance and suppression of burr formation, resulting in the enhancement of form accuracy of machined micro-features. While the effect of the EVC increases with the increase of excitation frequency and the amplitude, it is found that a change in the cutting force decreases as the amplitude of an elliptical locus increases.

Keywords

References

  1. Shamoto, E. and Moriwaki, T., 'Study on Elliptical Vibration Cutting,' Annals of the CIRP, Vol. 43, No. 1, pp. 35-38, 1994 https://doi.org/10.1016/S0007-8506(07)62158-1
  2. Moriwaki, T. and Sharnoto, E., 'Ultrasonic Elliptical Vibration Cutting,' Annals of the CIRP, Vol. 44, No. 1, pp. 31-34, 1995 https://doi.org/10.1016/S0007-8506(07)62269-0
  3. Ma, C., Shamoto, E., Moriwaki, T. and Wang, L., 'Study of machining accuracy in ultrasonic elliptical vibration cutting,' International Journal of Machine Tools and Manufacture, Vol. 44, Issues 12-13, pp. 1305-1310, 2004 https://doi.org/10.1016/j.ijmachtools.2004.04.014
  4. Shamoto, E. and Moriwaki, T., 'Ultraprecision Diamond Cutting of Hardened Steel by Applying Elliptical Vibration Cutting,' Annals of the CIRP, Vol. 48, No. 1, pp. 441-444, 1999 https://doi.org/10.1016/S0007-8506(07)63222-3
  5. Shamoto, E., Suzuki, N., Moriwaki, T. and Naoi, Y., 'Development of Ultrasonic Elliptical Vibration Controller for Elliptical Vibration Cutting,' Annals of the CIRP, Vol. 51, No. 1, pp. 327-330, 2002 https://doi.org/10.1016/S0007-8506(07)61528-5
  6. Cerniway, M. A., 'Elliptical Diamond Milling: Kinematics, Force, and Tool Wear,' M.S. thesis, North Carolina State University, 2001
  7. Negishi, N., 'Elliptical Vibration Assisted Machining with Single Crystal Diamond Tools,' M.S. thesis, North Carolina State University, 2003
  8. Brocato, B. C., 'Micromachining using Elliptical Vibration Assisted Machining (EVAM),' M.S. thesis, North Carolina State University, 2005
  9. Kim, G D. and Loh, B. G, 'Characteristics of Chip Formation in Micro V-grooving Using Elliptical Vibration Cutting,' Journal of Micromechanics and Microengineering, Vol. 17, No.8, pp. 1458-1466, 2007 https://doi.org/10.1088/0960-1317/17/8/007
  10. Loh, B. G. and Kim, G. D., 'Micro Ultrasonic Elliptical Vibration Cutting - (I) The Generation of a Elliptical Vibration Cutting Motion for Micro Ultrasonic Machining,' Journal of KSPE, Vol. 22, No. 12, pp. 190-197, 2005
  11. Kim, G. D., Loh, B. G. and Hwang, G. S., 'Micro Ultrasonic Elliptical Vibration Cutting - (II) Ultrasonic Micro V-grooving Using Elliptical Vibration Cutting,' Journal of KSPE, Vol. 22, No. 12, pp. 198-204, 2005