Generalized groove-type chip breaker effects on drilling for different drill diameters and flute shapes

Jeff A. Degenhardt, Richard E. DeVor, Shiv G. Kapoor

Research output: Contribution to journalArticlepeer-review

Abstract

This paper proposes a generalized formulation to place chip-breaker grooves on drills of varying diameters. To verify the effectiveness of this generalization the groove is placed on the drill rake face of 6.35 and 3.18 mm diameter drills of standard and parabolic flute shapes using a fabrication process utilizing electro-discharge machining (EDM). The results indicate that chip size is reduced. The robustness of the placement of the groove is assessed with experiments validating effective distance from the cutting lip and groove depth thereby facilitating drill regrinding. Experiments are also conducted to study chip clogging when the chip-breaker groove is employed on small drill diameters.

Original languageEnglish (US)
Pages (from-to)1588-1597
Number of pages10
JournalInternational Journal of Machine Tools and Manufacture
Volume45
Issue number14
DOIs
StatePublished - Nov 1 2005

Keywords

  • Breaker
  • Chip
  • Clogging
  • Drilling
  • Evacuation
  • Groove

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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