GEOMETRICAL APPROACH FOR REDUCTION OF TOOL SHAPE DEGENERATION IN ELECTRIC DISCHARGE MACHINING (EDM)

Cogun C., Deniz T. C., Kucukturk G.

MACHINING SCIENCE AND TECHNOLOGY, vol.16, no.3, pp.445-458, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 16 Issue: 3
  • Publication Date: 2012
  • Doi Number: 10.1080/10910344.2012.699369
  • Journal Name: MACHINING SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.445-458
  • Keywords: electric discharge machining, tool geometric wear, tool shape degeneration, WEAR, PARAMETERS
  • Middle East Technical University Affiliated: Yes

Abstract

In this study, the geometric wear characteristics of tool electrodes were obtained for various pulse time, discharge current and machining depth settings in electric discharge machining. Different forms of protrusions were machined on the front surface of the tool to reduce the geometric wear. Significant reductions in original tool geometric wear characteristics (front wear, side wear and edge wear) were obtained with the use of square cross-section protrusions. The dimensions of the square cross-section protrusions were modeled mathematically in terms of machining parameters used in the experiments.