Micro-Hole Machining Using MEDM According to Machining Depth

미소구멍의 가공 깊이에 따른 미세방전 가공특성

  • 김재현 (서울대학교 대학원 기계항공공학부) ;
  • 김보현 (서울대학교 대학원 기계항공공학) ;
  • 류시형 (서울대학교 대학원 기계항공공학) ;
  • 주종남 (서울대학교 기계항공공학부)
  • Published : 2003.07.01

Abstract

In order to make a deep and precise micro-hole, electrode wear and clearance between the electrode and the workpiece are important parameters using micro-electrical discharge machining. In this study, experiments were carried out to show the characteristics of electrode wear and radial clearance with respect to the depth of machined hole. Electrode wear varied with respect to the depth of hole. With deeper machined hole, bigger clearance was observed. Also it was found that the diameter of electrode influences machining characteristics of deep holes.

Keywords

References

  1. Youn, J. W., Yang, Y. M., 'A Study on Micro-Hole Drilling by EDM,' Trans. of KSME, Vol. 14, No. 5, pp. 1147-1154, 1990
  2. Masuzawa, T., Tsukamoto, J. and Fujino, M., 'Drilling of Deep Microholes by EDM,' Annals of the CIRP, Vol. 38, No. 1, pp. 195-198, 1989
  3. Masuzawa, T., Kuo, C.-L. and Fujino, M., 'Drilling of Deep Microholes by EDM Using Additional Capacity,' Int. J. of the Japan Society of Precision Engineering, Vol. 24, No. 4, pp. 275-276, 1990
  4. Kagaya, K., Oishi, Y. and Yada, K., 'Micro-electrodischarge Machining Using Water as A Working Fluid - I : Micro-hole Drilling,' Precision Engineering, Vol. 8, No. 3, pp. 157-162, 1986 https://doi.org/10.1016/0141-6359(86)90034-6
  5. Kim, G. M., Kim, B. H. and Chu, C. N., 'Machining Rate and Electrode Wear Characteristics in Micro-EDM of Micro-Holes,' Journal of the Korea Society of Precision Engineering, Vol. 16, No. 10, pp. 94-100, 1999
  6. Yan, B. H., Huang, F. Y, Chow, H. M. and Tsai, J. Y, 'Micro-hole Machining of Carbide by Electric Discharge Machining,' Journal of Materials Processing Technology, Vol. 87, pp. 139-145, 1999 https://doi.org/10.1016/S0924-0136(98)00345-8