Development and performance analysis of new spade bit designs

Hanxin Zhao, Kornel F. Ehmann*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


The purpose of this work is to present the development and experimental performance assessment of a new generation of spade drill bits. Rigorous point geometry and drilling force models that describe the topology of the drill and its cutting behaviour have guided the development of these new drills with unique topological features. It is shown, both analytically through simulations and through a systematic experimental study, that the performance of the newly developed topologies exceeds that of the commercially available designs. The new spade bits yield lower thrust and torque over the whole range of pragmatic operating conditions.

Original languageEnglish (US)
Pages (from-to)1403-1414
Number of pages12
JournalInternational Journal of Machine Tools and Manufacture
Issue number13
StatePublished - Oct 2002


  • Spade drill geometry
  • Spade drill performance
  • Spade drills
  • Wood drilling

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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