Development of curved hole drilling method by EDM with suspended ball electrode - Optimization of suspending parts structure and possibility of curved hole drilling-

Atsushi Yamaguchi, Akira Okada, Tatsuya Miyake

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A new machining method of curved hole by EDM using a suspended metal ball electrode with a lead wire from the head of ED machine is newly proposed in this study. The EDM characteristics, such as removal volume and machined hole diameter were compared using CuW ball electrodes of 5.5mm in diameter suspended with thin wire, foil, and chain, in order to optimize the suspending part structure and the machining conditions. Experimental results showed that the removal rate using the suspended electrode with the chain was higher than that using a rod electrode under the optimum conditions. It was also clarified that the servo voltage and discharge current were dominant parameters to keep a stable machining performance. Moreover, bending holes with various bending angles and complicated curve holes were created, and the high possibility of this method was shown.

Original languageEnglish
Pages (from-to)435-440
Number of pages6
JournalSeimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering
Volume81
Issue number5
DOIs
Publication statusPublished - May 1 2015

Keywords

  • Ball electrode
  • Curved-hole
  • Electrical discharge machining
  • Suspended electrode

ASJC Scopus subject areas

  • Mechanical Engineering

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