Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Minimization of Pattern Size on Polycarbonate Material in V-grooving

PC 폴리머 재료의 미세 V-홈 절삭가공 시 패턴 크기 최소화

  • 김기대 (대구가톨릭대학교 기계자동차공학부)
  • Received : 2011.05.27
  • Accepted : 2011.07.20
  • Published : 2011.10.15
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Abstract

Polycarbonate (PC) polymer is an engineering plastic which has large tensile strength and impact resistance and is wildly used as functional parts like micro mold. Direct machining of PC materials produces lots of burrs and rough surface due to large ductility and weak heat resistance and hence it is very difficult to machine PC materials using cutting tool to make micro-parts. In this study, elliptical vibration cutting (EVC) or 2-dimensional vibration cutting was performed to minimize the size of micro V-grooves on PC material. From the experimental results, it was observed that as the cutting depth and pattern size become smaller, the better machining quality was obtained, which is attributed to the positive effect of EVC that is dependent on the ratio of vibration amplitude to cutting depth. As the height of V-groove becomes less than $1.8{\mu}m$, however, the machining quality becomes lower as the pattern size decreases.

Keywords

References

  1. Kim, K. W., 2002, "A Study on the Critical Depth of Cut in Ultra-precision Machining," Journal of KSPE, Vol. 19, No. 8, pp. 126-133.
  2. Son, S. M., and Ahn, J. H., 2004, "The Minimizing of Cutting Depth using Vibration Cutting," Journal of KSPE, Vol. 21, No. 11, pp. 38-45.
  3. Lee, S. Y., Han J. A., Kim, J. W., Gwak, Y. K., Kang, D. B., and Ahn, J. W., 2011, "Development on Tool Holder of Vibration Cutting System for Ultraprecision Machining," Journal of KSMTE, Vol. 20, No. 3, pp. 268 -273
  4. 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
  5. Shamoto, E. and Moriwaki, T., 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
  6. 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, Paper No. 025002. https://doi.org/10.1088/0960-1317/18/2/025002
  7. Brehl, D. E., and Dow, T. A., 2008, "Review of Vibration-assisted Machining," Precision Engineering, Vol. 32, No. 3, pp. 153-172. https://doi.org/10.1016/j.precisioneng.2007.08.003