V-grooving using a strip EDM
- 268 Downloads
This study suggested use of strip electrical discharge machining (strip EDM) for fabricating V-grooves. Traditional methods, such as cutting or grinding, make it difficult to deal with hard-to-cut metals and burr formation on machined portions is a concern. Although EDM does not cause these problems, this machining method has the disadvantage of electrode wear. The wear causes shape error and low productivity. To overcome these problems, an experiment using strip EDM was conducted to produce V-grooves. A thin conductive strip used as an electrode was bent around an electrode guide and its corner was shaped into a right-angle triangle. This shaped electrode was used to fabricate a V-groove. Since the suggested process was not concerned with electrode wear, new electrodes for finish cuts and tool path compensation were not required during the machining process. It was also possible to complete high precision machining because no burr or deformation was caused by the cutting force when compared with traditional machining methods. In the practical machining of this research, the patterns of V-grooves, prisms and pyramids were fabricated on a stainless steel workpiece.
KeywordsStrip EDM V-grooving Electrode wear Material removal rate Surface roughness
Unable to display preview. Download preview PDF.
- 1.Jung, J. W., Ko S. H., Jeong, Y. H., Min, B. K., and Lee, S. J., “Estimation of Material Removal Volume of a Micro-EDM Drilled Hole Using Discharge Pulse Monitoring,” Int. J. Precis. Eng. Manuf., Vol. 8, No. 4, pp. 45–49, 2007.Google Scholar
- 3.Rossnagel, S. M., Cuomo, J. J., and Westwood, W. D., “Handbook of Plasma Processing Technology,” Noyes Publications, pp. 38–66, 1990.Google Scholar
- 4.Harry, J. E., “Introduction to Plasma Technology,” John Wiley & Sons, pp. 123–138, 2010.Google Scholar
- 5.Kyoristu Shuppan Co., Ltd., “Discharge Phenomena and Their Applications,” 2007.Google Scholar
- 6.Jameson, E. C., “Electrical Discharge Machining,” Society of Manufacturing Engineers, pp. 61–86, 2001.Google Scholar
- 13.Blatnik, O., Valentincic, J., and Junkar, M., “Percentage of Harmful Discharges for Surface Current Density Monitoring in Electrical Discharge Machining Process,” Proceeding of the Institution of Mechanical Engineers. Part B: Journal of Engineering Manufacturing, Vol 221, No. 12, pp. 1677–1684, 2007.CrossRefGoogle Scholar