대한산업공학회지 (Journal of Korean Institute of Industrial Engineers)

  • 제38권3호
  • /
  • Pages.220-226
  • /
  • 2012
  • /
  • 1225-0988(pISSN)
  • /
  • 2234-6457(eISSN)
대한산업공학회 (Korean Institute of Industrial Engineers)
권호 표지
DOI QR코드

DOI QR Code

방전드릴링에서 홀 관통 평가 방법

A Method of Hole Pass-Through Evaluation for EDM Drilling

  • 투고 : 2011.11.01
  • 심사 : 2012.05.03
  • 발행 : 2012.09.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The Electric discharge machining (EDM) process is used to minimize the difference between designed feature and machined feature while the most workpiece is removed through the cutting processes. The tiny-deep hole machining and perpendicular wall machining in mold and die are good applications of EDM. Among EDM equipment, the super drill uses the hollowed electrode to eliminate the debris which causes the second discharge with the electrode and degrades the machining quality. Through the hollow, the high pressured discharge oil is supplied to remove the debris together with the spindle rotation. The thin-hollow electrode tends to easily wear out compared to the sold die-sinking electrode and its wear rate is might not allowed to monitor in real time during discharging. Up to now, the wear amount is measured by off line method, which leads machining time to increase because the hole pass-through moment can be check by visual (manually) with the extra tool path. Therefore, this study suggests the attractive method to evaluate the hole pass-through moment in which the gap voltage and z-axis encoder pulse are monitored to predict the moment. The commercial super drill is used to validate the proposed method and the experiment is carried out.

키워드

참고문헌

  1. Jia, Z. X., Zhang, J. H., and Ai, X. (1997), Study on a New Kind of Combined Machining Technology of Ultrasonic Machining and Electrical Discharge Machining, International Journal of Machine Tools and Manufacture, 37(2), 193-197. https://doi.org/10.1016/S0890-6955(96)00048-X
  2. Kalpajian, S. and Schmid, S. R. (2003), Material removal processes : Abrasive, Chemical, Electrical and High-Energy Beam, in : Manufacturing Processes for Engineering Materials, Prentice Hall, New Jersey.
  3. Kim, B. H. (1999), Micro Hole Machining Using MEDM with Screw-Type Electrode, Master Thesis, Seoul University.
  4. Kim, D. J., Yi, S. M., Lee, Y. S., and Chu, C. N. (2005), Control of Taper Shape in Micro-Hole Machining by Micro-EDM, Journal of the KSPE, 22(4), 52-59.
  5. Kim, Y. T., Park, S. J., and Lee, S. J. (2005), Micro/Meso-Scale Shapes Machining by Micro EDM Process, International Journal of Precision and Manufacturing, 6(2), 5-11.
  6. Kremer, D., Lebrun, J. L., Hosari, B., and Moisan, A. (1989), Effects of Ultrasonic Vibrations on the Performances in EDM, CIRP Annals-Manufacturing Technology, 38(1), 199-202. https://doi.org/10.1016/S0007-8506(07)62684-5
  7. Kremer, D., Lhiaubet, C., and Moisan, A. (1991), A Study of the Effect of Synchronizing Ultrasonic Vibrations with Pulses in EDM, CIRP Annals-Manufacturing Technology, 40(1), 211-214. https://doi.org/10.1016/S0007-8506(07)61970-2
  8. Lee, C. S., Heo, E. Y., Hong, M. S., and Kim, J. M. (2011), A Study on the Optimal Machining Condition of the Micro Hole In Micro-EDM Process, The 21st International conference on Flexible Automation and Intelligent Manufacturing, 409-414, TAIWAN.
  9. Lee, C. S., Kim, J. M., Heo, E. Y., Kim, B. M., and Kim, D. W. (2011), A Study on the Machinability of Micro Channel using Mircro-EDM, The 21st International conference on Flexible Automation and Intelligent Manufacturing, 401-408, TAIWAN.
  10. Lim, H. S., Wong, Y. S., Rahman, M., and Lee, M. K. F. (2003), A Study on the Machining of High-Aspect Ration Micro Structures using Micro-EDM, Journal of Materials Processing Technology, 140(1-3), 318-325. https://doi.org/10.1016/S0924-0136(03)00760-X
  11. Lin, J. L., Wang, K. S., Yan, B. H., and Tarng, Y. S. (2000), Optimization of the Electrical Discharge Machining Process Based on the Taguchi Method with Fuzzy Logics, Journal of Materials Processing Technology, 102, 48-55. https://doi.org/10.1016/S0924-0136(00)00438-6
  12. Lonardo, P. M. and Bruzzone, A. A. (1999), Effect of Flushing and Electrode Material on Die Sinking EDM, CIRP Annals-Manufacturing Technology, 48(1), 123-126. https://doi.org/10.1016/S0007-8506(07)63146-1
  13. Marafona, J. and Wykes, C. (2000), A New Method of Optimising Material Removal Rate using EDM with Copper-Tungsten Electrodes, International Journal of Machine Tools and Manufacture, 40(2), 153-164. https://doi.org/10.1016/S0890-6955(99)00062-0
  14. Masuzawa, T., Fujino, M., and Kobayashi, K. (1985), Wire Electro-Discharge Grinding for Micro-Machining, CIRP Annals-Manufacturing Technology, 34(1), 431-434. https://doi.org/10.1016/S0007-8506(07)61805-8
  15. Masuzawa, T., Kuo, C. L., and Fujino, M. (1990), Drilling of Deep Microholes by EDMUsing Additional Capacity, Int. J. of the Japan Society of Precision Engineering, 23(4), 275-276.
  16. Masuzawa, T., Kuo, C. L., and Fujino, M. (1994), A Combined Electrical Machining Process for Micro Nozzle Fabrication, CIRP Annals-Manufacturing Technology, 43(1), 189-192. https://doi.org/10.1016/S0007-8506(07)62193-3
  17. Mohri, N., Suzuki, M., Furuya, M., and Asito, N. (1995), Electrode Wear Process in Electrical Discharge Machining, CIRP Annals-Manufacturing Technology, 44, 165-168. https://doi.org/10.1016/S0007-8506(07)62298-7
  18. Mohri, N., Suzuki, M., Furuya, M., and Saito, N. (1995), Electrode Wear Process in Electrical Discharge Machining, CIRP Annals-Manufacturing Technology, 44(1), 165-168. https://doi.org/10.1016/S0007-8506(07)62298-7
  19. Mohri, N., Takezawa, H., Furutani, K., Ito, Y., and Sata, T. (2000), A New Process of Additive and Removal Machining by EDM with a Thin Electrode, CIRP Annals-Manufacturing Technology, 49(1), 123-126. https://doi.org/10.1016/S0007-8506(07)62910-2
  20. Yu, Z. Y., Masuzawa, T., and Fujino, M. (1998), Micro-EDM for Three Dimensional Cavities Development of Uniform Wear Method, CIRP Annals-Manufacturing Technology, 47(1), 169-172. https://doi.org/10.1016/S0007-8506(07)62810-8

피인용 문헌

  1. A Study of Electrode Wear Estimation and Compensation for EDM Drill vol.39, pp.3, 2013, https://doi.org/10.7232/JKIIE.2013.39.3.149
  2. Review and Perspectives on the Research and Industrial Applications of Manufacturing Systems Engineering in Korea for 40 Years vol.40, pp.6, 2014, https://doi.org/10.7232/JKIIE.2014.40.6.555
  3. Electron Discharge Machining (EDM) and Hole EDM of Cold Heat-treated Tool Steel Molds (STD11) by using Cu Electrodes vol.17, pp.4, 2018, https://doi.org/10.14775/ksmpe.2018.17.4.076