An investigation of the effects of chip flow on tool-wear in machining with complex grooved tools

I. S. Jawahir, R. Ghosh, X. D. Fang, P. X. Li

Research output: Contribution to journalArticlepeer-review

60 Scopus citations


This paper presents a systematic approach towards understanding of the tool-wear mechanisms in grooved tool inserts based on chip-flow patterns. It has been observed through high-speed filming experiments and scanning electron microscopy that improper design of chip-groove geometry and/or inappropriate application of the cutting conditions result in "undesirable" chip-flow patterns and consequent rapid tool-wear and tool failure, especially in cases, where the flank wear (VB) or the crater wear (KT) are not severe. Thus, the different forms of tool-wear in grooved tools can be seen as more due to the mechanical action of the flow of the chip than due to the adhesion or diffusion process. The present work is expected to lead to a better understanding of the influence of individual chip-groove and machining parameters on tool failure modes, and consequently, would contribute to a more effective tool-life prediction.

Original languageEnglish
Pages (from-to)145-154
Number of pages10
Issue number2
StatePublished - May 1995

Bibliographical note

Funding Information:
The authors would like to thank Ford Motor Co. for providing a seeding grant and the Center for Robotics and Manufacturing Systems for providing the necessary experimental support. Thanks are also due to Kennametal Inc. for allowing use of chip-breaking photographs and to Larry Rice for providing help in developing SEM pictures.


  • Backwall wear
  • Chip-flow
  • Grooved tools

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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