Electrical Discharge Machining of Submicron-Diameter Micropins


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The wire electrodischarge grinding (WEDG), which is one of the electrical discharge machining (EDM) methods, of submicron-diameter zinc micropins was attempted using a relaxation-type pulse generator. Tungsten wire of 30 µm diameter was employed as the tool electrode. The open-circuit voltage was set at lower than or equal to 15 V in the finish machining step. The electrostatic capacitance of the pulse generator was its stray capacitance only. As a result, a micropin of 0.3 µm diameter was processed. They are the smallest-diameter micropins fabricated by EDM, to the best of our knowledge.



Key Engineering Materials (Volumes 447-448)

Edited by:

Jianhong Zhao, Masanori Kunieda, Guilin Yang and Xue-Ming Yuan




H. Ueno et al., "Electrical Discharge Machining of Submicron-Diameter Micropins", Key Engineering Materials, Vols. 447-448, pp. 238-241, 2010

Online since:

September 2010




[1] M. Kunieda, B. Lauwers, K.P. Rajurkar and B.M. Schumacher: Annals of the CIRP, Vol. 54, No. 2 (2005), p.599.

[2] M. Kimori and M. Kunieda: Proceedings of the 2009 Japan Society for Precision Engineering Spring Conference (2009), p.852 (in Japanese).

[3] M. Hanada, M. Kunieda: Journal of the Japan Society for Precision Engineering, Vol. 72, No. 5 (2006), p.636 (in Japanese).

[4] M. Yamazaki, T. Suzuki, N. Mori, Y. Teranishi and M. Kunieda: Journal of the Japan Society for Precision Engineering, Vol. 74, No. 3 (2008), p.264 (in Japanese).

[5] Y. Hattori, Y. Morita and K. Egashira: Proceedings of the Annual Meeting of the Japan Society of Electrical Machining Engineers (2008), p.63 (in Japanese).

[6] T. Masuzawa, M. Fujino, K. Kobayashi: Annals of the CIRP, Vol. 34, No. 1 (1985), p.431.

[7] K. Egashira and K. Mizutani: International Journal of Electrical Machining, No. 10 (2005), p.21.

[8] K. Egashira, Y. Morita and Y. Hattori: Precision Engineering, Vol. 34, No. 1 (2010), p.139.

[9] T. Masuzawa: Proceedings of the 13th International Symposium for Electromachining (2001), p.3.