Abstract
In order to improve the machining characteristics, rotational electrode has been widely used in machining micro holes in electrical discharge machining (EDM). In the current work, a high spindle speed EDM was employed for machining holes, and the effect of the rotating speed on the material removal rate, electrode wear, and the taper of the hole was studied. Fluent software was used to simulate the flow field of the working gap medium at different rotating speeds of the tool electrode, and the velocity field of the working gap medium and the distribution of the discharge debris particles in the working gap at different rotating speeds of the tool electrode were investigated. The results show that increasing the rotating speed of the tool electrode brings higher removal rate and lower electrode wear and taper of the hole. This is because increasing the rotating speed of the tool electrode can promote the flow velocity of the working gap flow field, and the efflux velocity of working liquid containing discharge debris particles is speeded up.
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References
Pham DT, Dimov SS, Bigot S, Ivanov A, Popov K (2004) Micro-EDM: recent developments and research issues. J Mater Process Technol 149(1):50–57
Zeng ZQ, Wang YK, Wang ZL, Shan DB (2012) Effect of dielectric medium on electrode wear in micro-electrical discharge milling. Nanotechnol Precis Eng 22(1):27–35
Kadirvel A, Hariharan P, Gowri S (2012) A review on various research trends in micro-EDM. Int J Mechatron Manuf Syst 5(5–6):361–384
Soni JS, Chakraverti G (1994) Machining characteristics of titanium with rotary electro-discharge machining. Wear 171(1–2):51–58
Cyril PJ, Asokan P, Jerald J, Kanagaraj G, Nilakantan JM, Nielsen I (2017) Tool speed and polarity effects in micro-EDM drilling of 316L stainless steel. Prod Manuf Res 5(1):99–117
Tong H, Li Y, Wang Y (2008) Experimental research on vibration assisted EDM of micro-structures with non-circular cross-section. J Mater Process Technol 208(1–3):289–298
Zhang QH, Zhang JH, Deng JX, Qin Y, Niu ZW (2002) Ultrasonic vibration electrical discharge machining in gas. J Mater Process Technol 129(1–3):135–138
Zhang QH, Zhang JH, Ren SF, Deng JX, Ai X (2004) Study on technology of ultrasonic vibration aided electrical discharge machining in gas. J Mater Process Technol 149(1–3):640–644
Masuzawa T, Heuvelman CJ (1983) A self-flushing method with spark-erosion machining. CIRP annals-Manuf Technol 32(1):109–111
Yan BH, Wang CC (1999) The machining characteristics of Al2O3/6061Al composite using rotary electro-discharge machining with a tube electrode. J Mater Process Technol 95(1–3):222–231
Meena VK, Azad MS, Mitra S (2012) Effect of flushing condition on deep hole micro-EDM drilling. Int J Mach Mach Mater 12(4):308–320
Zhao WS, Wang ZL, Di SC, Chi GX, Wei H (2002) Ultrasonic and electric discharge machining to deep and small hole on titanium alloy. J Mater Process Technol 120(1–3):101–106
Plaza S, Sanchez JA, Perez E, Gil R, Izquierdo B, Ortega N, Pombo I (2014) Experimental study on micro EDM drilling of Ti6Al4V using helical electrode. Precis Eng 38(4):821–827
Kumar R, Singh I (2018) Productivity improvement of micro EDM process by improvised tool. Precis Eng 51:529–535
Liu K, Lauwers B, Reynaerts D (2010) Process capabilities of micro-EDM and its applications. Int J Adv Manuf Technol 47(1–4):11–19
Zhang Y, Zhao H, Zhang G, Wang ZL, Zhao WS (2008) Research on a micro-EDM system and its techniques. China Mach Eng 19:526–530
Yang XD, Kimori M, Kunieda M, Araie I, Sano S (2007) Machining Properties of Micro EDM Using Electrostatic Induction Feeding. Proc ISEM XV:231–234
Yang X, Kunieda M, Sano S (2008) Study on influence of stray capacitance on micro EDM using electrostatic induction feeding. Int J Electr Mach 13:35–40
Koyano T, Kunieda M (2010) Achieving high accuracy and high removal rate in micro-EDM by electrostatic induction feeding method. Ann CIRP 59(1):219–222
Feng GL, Yang XD, Chi GX (2017) Study on machining characteristics of micro EDM with high spindle speed using non-contact electric feeding method. Int J Adv Manuf Technol 92(5–8):1979–1989
Li H, Xu WL, Li KF, Li J (2002) Study on particle diffusion coefficient of turbulent shear flow in open channel. J Hydraul Eng 33(8):47–52
Alajbegovic A, Drew DA, Lahey JRT (1999) An analysis of phase distribution and turbulence in dispersed particle/liquid flows. Chem Eng Commun 174(1):85–133
Funding
This research was financially supported by the National Natural Science Foundation of China (General Program, 51175121, 51575136) and the Key Project of Natural Science Foundation of Heilongjiang Province (ZD2015009).
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Feng, G., Yang, X. & Chi, G. Experimental and simulation study on micro hole machining in EDM with high-speed tool electrode rotation. Int J Adv Manuf Technol 101, 367–375 (2019). https://doi.org/10.1007/s00170-018-2917-6
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DOI: https://doi.org/10.1007/s00170-018-2917-6