Drilling of noncircular blind micro holes by micro EDM

Z. Yu, K. P. Rajurkar, H. Shen

Research output: Contribution to conferencePaperpeer-review


In Micro EDM, it is difficult to machine a noncircular blind micro hole using a simple up-down movement of electrode because of the difficulty to remove gaseous bubbles and debris during machining which result in the abnormal discharges. This paper presents a new approach to address this problem by applying the planetary movement of the tool electrode to allow the gases and debris to escape from the narrow discharge gap. The approach is verified and demonstrated by drilling noncircular blind micro holes. The process performance characteristics such as material removal rate and electrode wear ratio are analyzed under different machining conditions.

Original languageEnglish (US)
Number of pages8
StatePublished - 2002
EventNAMRC XXX - West Lafayette, ID, United States
Duration: May 21 2002May 24 2002


ConferenceNAMRC XXX
Country/TerritoryUnited States
CityWest Lafayette, ID


  • EDM
  • High aspect ratio
  • Micro hole
  • Micromachining
  • Performance

ASJC Scopus subject areas

  • General Engineering


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