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High spindle speed wire electrical discharge grinding using electrostatic induction feeding method

  • Yuna Yahagi*
  • , Tomohiro Koyano
  • , Masanori Kunieda
  • , Xiaodong Yang
  • *Corresponding author for this work
  • Tokyo University of Agriculture and Technology
  • The University of Tokyo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationAdvances in Precision Engineering
PublisherTrans Tech Publications Ltd
Pages268-271
Number of pages4
ISBN (Print)9780878492565
DOIs
StatePublished - 2010

Publication series

NameKey Engineering Materials
Volume447 448
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Keywords

  • Electrical discharge machining (EDM)
  • High spindle speed
  • Micro/nano-precision machining

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