Micro-cutting characteristics of EDM fabricated high-precision polycrystalline diamond tools

Zhiyu Zhang, Huanming Peng, Jiwang Yan

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

To fabricate three-dimensional microstructures, such as micro dimples, micro grooves and micro channels, on ceramic mold materials, tool fabrication with super hard materials is an essential step. In this work, micro electro discharge machining (EDM) was used to fabricate high-precision polycrystalline diamond end mills. Form accuracy and edge sharpness in one micron level were achieved by utilizing electro discharge induced graphitization of diamond grains under extremely low discharge energy conditions. The cutting performance of the fabricated tools was examined by machining micro dimples and micro grooves on tungsten carbide mold substrates. Results showed that using the EDMfabricated tools, ductile mode machining of tungsten carbide was realized with a surface finish of 2 nm Ra, which is comparable to that produced by polishing.

Original languageEnglish
Pages (from-to)99-106
Number of pages8
JournalInternational Journal of Machine Tools and Manufacture
Volume65
DOIs
Publication statusPublished - 2013

Fingerprint

Electric discharge machining
Diamonds
Tungsten carbide
Machining
Graphitization
Polishing
Fabrication
Microstructure
Substrates

Keywords

  • Electro discharge machining
  • Micro cutting
  • Micro end mill
  • Mold fabrication
  • Polycrystalline diamond
  • Structured surface

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

Cite this

Micro-cutting characteristics of EDM fabricated high-precision polycrystalline diamond tools. / Zhang, Zhiyu; Peng, Huanming; Yan, Jiwang.

In: International Journal of Machine Tools and Manufacture, Vol. 65, 2013, p. 99-106.

Research output: Contribution to journalArticle

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