Affiliation:
1. Tokyo University of Agriculture and Technology
2. University of Tokyo
3. Harbin Institute of Technology
Abstract
This paper describes machining characteristics of high spindle speed WEDG using the
electrostatic induction feeding method. In this method, non-contact electric feeding allows the
workpiece rod to be rotated at a high speed of up to 50000rpm. Since the temperature rise on the
workpiece surface is low, the material removal rate was two times higher and the surface roughness
was also improved compared to the normal RC discharge circuit where the rotational speed was
1000rpm at the highest due to contact electric feeding using a brush. Furthermore, micro rods thus
prepared were used as tool electrodes to machine micro-holes with the same rotation speed of
50000rpm. It was found that smaller gaps and better straightness can be obtained due to the high
flushing efficiency at the high spindle speed.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference16 articles.
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2. X. D. Yang, M. Kunieda, S. Sano, I. Araie: Machining Properties of Micro EDM Using Electrostatic Induction Feeding, Proc. of ISEM XV (2007), pp.231-234.
3. Y. Yahagi, T. Koyano, M. Kunieda, X. D. Yang: Improvement of Machining Characteristics of Micro EDM by Electrostatic Induction Feeding to High Speed Spindle, Proceedings of Annual Meeting of the Japan Society of Electrical Machining Engineers(2009).
4. T. Masuzawa, M. Fujino, K. Kobayashi: Wire Electro Discharge Grinding for Micro-Machining, Annals of the CIRP, 34(1) (1985), pp.431-434 Fig. 4 Tool electrodes after drilling (b) 50000rpm.
5. 2䃛m (a) 1000rpm.
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