Abstract
In this paper the effect of ultrasonic vibration of the tool in the process of electrical discharge machining is investigated. The ultrasonic vibration of the tool has significant effect on the dynamic behaviour of the vapour bubble generated between the tool and the workpiece due to the electrical discharge. The computational simulation of the bubble behaviour is carried out by employing the boundary integral equation method. Results show that when the electrical discharge occurs in the closest position of the tool to the workpiece, the vapour bubble expands to the largest maximum volume of the bubble and the lifetime of the bubble is the longest. This in turn makes the pressure inside the bubble decrease rapidly to the lowest magnitude and causes melted material at the sparked point vaporize and leave the crater on the surface of the workpiece.
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References
Kremer D, Lebrun JL, Hosari B, Moisan A (1989) “Effects of ultrasonic vibrations on the performances in EDM”. CIRP Ann 38/1:199–202
Murthy VSR, PhiliP Pk (1987) “Pulse train analysis in ultrasonic assisted EDM”. Int J Mach Tools Manuf 27(4):469–477
Jia Z, Zhang J, Ai X (1997) “Study on a new kind of combined machining technology of ultrasonic machining and electrical discharge machining”. Int J Mach Tools Manuf 37(2):193–199
Lin YC, Yan BH, Chang YS (2000) “Machining characteristics of titanium alloy (Ti-6Al-4V) using a combination process of EDM with USM”. J Mat Process Technol 104:171–177
Abdullah A, Shabgard MR (2005) “Effect of ultrasonic vibration of tool on electrical discharge machining of tungsten carbide (WC-Co)”. International Manufacture Engineering Conf., Iran
Zhang JH, Lee TC, Lau WS, Ai X (1997) “Spark erosion with ultrasonic frequency”. J Mater Process Technol 68:83–88
Zolotykh BN (1960) “The mechanism of electrical erosion of metals in liquid dielectric media”. Sov Phys Tech Phys 4:1370–1373
Kremer D, Lhiaubet C, Moisan A (1991) “A study of the effect of synchronizing ultrasonic vibrations with pulses in EDM”. CIRP Ann 40/1
Lhiaubet C, Benzerga L, Boyer L (1991) “Influence of a variable Pressure field in the dielectric on material removal by electrical discharge Machining”. CIRP Ann 40/1
Eubank PT, Patel MR, Barrufet MA, Bozkurt B (1993) “Theoretical models of the electrical discharge machining Process. III. The Variable mass, cylindrical Plasma model”. J Appl Phys 73(11):1
Shervani-Tabar MT, Abdullah A, Shabgard MR (2006) “Numerical study on the dynamics of an electrical discharge generated bubble in EDM”. Eng Anal Bound Elem 30:503–514
Shervani-Tabar MT, Shabgard MR (2006) “Numerical study on the effect of ambient pressure on the rate of material removal in an EDM process”. To be printed in Int J Adv Manuf Technol
Rayleigh L (1917) “On the pressure developed in a liquid during collapse of a spherical void”. Phil Mag 34:94–98
Best JP (1991) “The dynamics of underwater explosions”. PhD Thesis. University of Wollongong, Wollongong, Australia
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Shervani-Tabar, M.T., Abdullah, A. & Shabgard, M.R. Numerical and experimental study on the effect of vibration of the tool in ultrasonic assisted EDM. Int J Adv Manuf Technol 32, 719–731 (2007). https://doi.org/10.1007/s00170-006-0828-4
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DOI: https://doi.org/10.1007/s00170-006-0828-4