Manufacturing Technology 2022, 22(4):455-460 | DOI: 10.21062/mft.2022.053

Experimental Investigation on the Effects of the Geometry of Micro Hole on the EDM Drilling Process

Giuseppe Pellegrini ORCID...1, Chiara Ravasio ORCID...1
University of Bergamo – Department of Management, Information and Production Engineering – viale Marconi, 5 - 24044 Dalmine (BG) – Italy

In the last years, the interest in micromachining has grown significantly due to the miniaturization of several components used in several fields such as automotive, aerospace and biomedical. In this scenar-io, the main protagonists are the microtechnologies and their capabilities. Micro EDM is a technology able to remove material from conductive workpieces through electrical sparks. Each spark makes a crater on the workpiece surface. Micro drilling is one of its common applications. In micro EDM drilling the geometrical characteristics of the hole are related to the electrode size. In this paper, the effects of the geometry of micro hole on the micro EDM drilling process performance have been investigated. In order to do this, experimental tests were conducted varying the electrode diameter and the aspect ratio of the hole. The influence of the electrode diameter and the aspect ratio on several indexes about process per-formance were established. This study contributes to improve the knowledge of the process and can support the users to establish the effects of the geometry of the hole on the machining performance.

Keywords: micro-EDM, micro drilling, performance evaluation, electrode diameter, aspect ratio

Received: April 28, 2022; Revised: September 28, 2022; Accepted: October 4, 2022; Prepublished online: October 6, 2022; Published: October 17, 2022  Show citation

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Pellegrini G, Ravasio C. Experimental Investigation on the Effects of the Geometry of Micro Hole on the EDM Drilling Process. Manufacturing Technology. 2022;22(4):455-460. doi: 10.21062/mft.2022.053.
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    References

    1. PODANY', J., TOMICEK, J. (2020). Analysis of small holes manufacturing for optomechanical components. In: Manufacturing Technology Vol.20(2), pp. 229-236. Go to original source...
    2. SONA, S.M., LIMB, H.S., KUMARB, A.S., RAHMANB, M. (2007). Influences of pulsed power condition on the machining properties in micro EDM. In: Journal of Material Processing Technology, Vol. 190, pp. 73-76. Go to original source...
    3. DENKENA, B., HOFFMEISTER, H.W., REICHSTEIN, M., ILLENSEER, S., HLAVAC, M. (2006). Micro-machining processes for microsystem technology. In: Microsystem Technology, Vol. 12, pp. 659-664. Go to original source...
    4. PRADHAN, B.B., MASANTA, M., SARKAR, B.R., BHATTACHARYYA, B. (2009). Investigation of electro-discharge micro-machining of titanium super alloy. In: International Journal Advanced Manufacturing Technology, Vol. 41, pp. 1094-1106. Go to original source...
    5. D'URSO, G., RAVASIO, C. (2019). Investigation on the Effects of Exchanged Power and Electrode Properties on Micro EDM Drilling of Stainless Steel. In: Manufacturing Technology Vol.19(2), pp. 337-344. Go to original source...
    6. KUPPAN, P., RAJADURAI, A., NARAYANAN, S. (2008). Influence of EDM process parameters in deep hole drilling of Inconel 718. In: International Journal Advanced Manufacturing Technology, Vol. 38, pp. 74-84. Go to original source...
    7. KIYAK, M.et al. (2015). Effects of discharge energy density on wear rate and surface roughness in EDM. In: International Journal Advanced Manufacturing Technology, Vol. 79, pp. 513-518. Go to original source...
    8. JAHAN, M.P., WONG, Y.S., RAHMAN, M. (2009). A study on the fine-finish die-sinking micro-EDM of tungsten carbide using different electrode materials. In: Journal of Material Processing Technology, Vol. 209, pp. 3956-3967. Go to original source...
    9. YILMAZ, O.M., OKKA, A. (2010). Effect of single and multi-channel electrodes application on EDM fast hole drilling performance. In: International Journal Advanced Manufacturing Technology, Vol. 51, pp. 185-194. Go to original source...
    10. ABBAS, N.M., YUSOFF, N., WAHAB, R.M. (2012). Electrical discharge machining (EDM): practises in malaysian industries and possible change towards green manufacturing. In: Procedia Engineering, Vol. 41, pp. 1684-1688. Go to original source...
    11. NIAMAT, M., SARFRAZ, S., AZIZ, H., JAHANZAIB, M., SHEBAB, E., AHMAD, W., HUSSAIN, S. (2017). Effect of different dielectrics on material removal rate, electrode wear rate and microstructure in EDM. In: Procedia CIRP Design, 2-7. Go to original source...
    12. FONDA, P., et al. (2008). A fundamental study on Ti-6Al-4V's thermal and electrical properties and their relation to EDM productivity. In: Journal of Material Processing Technology, Vol. 202, pp. 583-589. Go to original source...
    13. MUHARDIKA, M., et al. (2008). A new approach on the determination of ease of machining by EDM processes. In: International Journal of Machine Tool and Manufacture, Vol. 48, pp. 746-760. Go to original source...
    14. TSAI, Y.Y., MASUZAWA, T. (2004). An index to evaluate the wear resistance of the electrode in micro-EDM. In: Journal of Material Processing Technology, Vol. 149, pp. 304-309. Go to original source...
    15. KHAN, A.A., et al. (2018). Performance of electrical discharge machining (EDM) with nickel added dielectric fluid. In: IIUM Engineering Journal, Vol. 19, pp. 215-222. Go to original source...
    16. LIU, Q., et al. (2016). Effect of Electrode Size on the Performances of Micro-EDM. In: Materials and Manufacturing Processes, Vol. 31, pp. 391-396. Go to original source...
    17. WANGA, K., et al. (2018). Influence of tool size on machining characteristics of micro-EDM. In: Procedia CIRP, Vol. 68, pp. 604-609. Go to original source...
    18. LIU, Q., YANG, F., SUN, S., YANG, M., SHAO, J. (2019). Surface Integrity of Micro EDM Surface Using Electrodes of Various Diameters. In: Coatings, Vol. 9: 805. Go to original source...
    19. VASILKO, K. (2019). Titanium and Technological Problems of Its Machining. In: Manufacturing Technology Vol.19(3), pp. 525-530. Go to original source...

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