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Gap current voltage characteristics of energy-saving pulse power generator for wire EDM

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Abstract

The characteristics of the gap current voltage are directly used to estimate the gap status and are helpful in understanding the gap discharge mechanism and in adjusting the process parameters in wire electrical discharge machining (WEDM). Current and voltage waveforms were studied to analyze the gap current voltage characteristics of an energy-saving pulse power generator during a discharge pulse period. The discharge voltage was increasing with discharge time, and the gap current waveform was triangular other than the traditional rectangular waveform. A gap detection model of the energy-saving pulse power generator was established to analyze further the gap current voltage characteristics theoretically. Experiment analysis of different workpiece materials and current peak values showed that the gap discharge voltage and short circuit voltage continuously increase. The triangular waveform and increasing discharge voltage were caused by the increasing gap current in the process because the sustaining voltage was absent in the discharge status. And the gap current voltage characteristics were nonlinear.

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References

  1. 1.

    Abbas NM, Solomon DG, Bahari MF (2007) A review on current research trends in electrical discharge machining. Int J Mach Tools Manuf 47:1214–1228

  2. 2.

    Schumacher BM (2004) After 60 years of EDM the discharge process remains still disputed. J Mater Process Technol 149:376–381

  3. 3.

    Ramakrishnan R, Karunamoorthy L (2006) Multi response optimization of wire EDM operations using robust design of experiments. Int J Adv Manuf Technol 29:105–112

  4. 4.

    Tosun N, Cogun C, Pihtili H (2003) The effect of cutting parameters on wire crater sizes in wire EDM. Int J Adv Manuf Technol 21:857–865

  5. 5.

    Suganthi XH, Natarajan U, Sathiyamurthy S, Chidambaram K (2013) Prediction of quality responses in micro-EDM process using an adaptive neuro-fuzzy inference system (ANFIS) model. Int J Adv Manuf Technol 68:339–347

  6. 6.

    Yan MT, Liu YT (2009) Design, analysis and experimental study of a high-frequency power supply for finish cut of wire-EDM. Int J Mach Tool Manuf 49:793–796

  7. 7.

    Shimada S, Tanaka H, Mohri N, Hideki T, Yoshiro I, Rie T (2004) Molecular dynamics analysis of self- sharpening phenomenon of thin electrode in single discharge. J Mater Process Technol 149:358–362

  8. 8.

    Yan MT, Fang GR, Liu YT (2013) An experimental study on micro wire EDM of polycrystalline diamond using a novel pulse generator. Int J Adv Manuf Technol 66:1633–1640

  9. 9.

    Mahardika M, Prihandana GS, Endo T, Tsujimoto T, Matsumoto N, Arifvianto B, Mitsui K (2012) The parameters evaluation and optimization of polycrystalline diamond micro-electrodischarge machining assisted by electrode tool vibration. Int J Adv Manuf Technol 60(9–12):985–993

  10. 10.

    Shunsuke T, Masanori K (2009) Analysis of electromagnetic force in wire-EDM. Precis Eng 33:255–262

  11. 11.

    Mahardika M, Mitsui K (2008) A new method for monitoring microelectric discharge machining processes. Int J Mach Tools Manuf 48:446–458

  12. 12.

    Izquierdo B, Sanchez JA, Plaza S, Pombo I, Ortega N (2009) A numerical model of the EDM process considering the effect of multiple discharges. Int J Mach Tools Manuf 49:220–229

  13. 13.

    Ming WY, Zhang GJ, Li H, Guo JW, Zhang Z, Huang Y, Chen Z (2014) A hybrid process model for EDM based on finite-element method and Gaussian process regression. Int J Adv Manuf Technol. doi:10.1007/s00170-014-5989-y

  14. 14.

    Liu SY, Huang YM, Li Y (2011) A plate capacitor model of the EDM process based on the field emission theory. Int J Mach Tools Manuf 51:653–659

  15. 15.

    Joshi SN, Pande SS (2009) Development of an intelligent process model for EDM. Int J Adv Manuf Technol 45:300–317

  16. 16.

    Wang K, Gelgele HL, Wang Y, Yuan Q, Fang M (2003) A hybrid intelligent method for modeling the EDM process. Int J Mach Tools Manuf 43:995–999

  17. 17.

    Su JC, Kao JY, Tarng YS (2004) Optimisation of the electrical discharge machining process using a GA-based neural network. Int J Adv Manuf Technol 24:81–90

  18. 18.

    Kitamura T, Kunieda M, Abe K (2013) High-speed imaging of EDM gap phenomena using transparent electrodes. Procedia CIRP 6:314–319, The Seventeenth ISEM

  19. 19.

    Takeuchi H, Kunieda M (2007) Effects of volume fraction of bubbles in discharge gap on machining phenomena of EDM. Proc. of ISEM XV, 63–68.

  20. 20.

    Natsu W, Shimoyamada M, Kunieda M (2006) Study on expansion process of EDM arc plasma. JSME Ser C 49:600–605

  21. 21.

    Kojima A, Natsu W, Kunieda M (2008) Spectroscopic measurement of arc plasma diameter in EDM. Ann CIRP 57:203–207

  22. 22.

    Liu JC, Bai JC, Guo YF (2008). Non-traditional machining. China machine press, Beijing, 5rd chapter

  23. 23.

    Fan YS, Li CJ, Bai JC, Li Q (2014) Experimental study on energy consumption of energy-saving pulse power for WEDM. Int J Adv Manuf Technol 72(9-12):1687–1691

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Correspondence to Chaojiang Li.

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Li, C., Bai, J., Ding, J. et al. Gap current voltage characteristics of energy-saving pulse power generator for wire EDM. Int J Adv Manuf Technol 77, 1525–1531 (2015). https://doi.org/10.1007/s00170-014-6365-7

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Keywords

  • WEDM
  • Energy-saving pulse power generator
  • Gap characteristics
  • Current voltage characteristics