Prediction of tool-chip interface friction and chip-groove effects in machining with restricted contact grooved tools using the universal slip-line model

X. Wang, I. S. Jawahir

Research output: Contribution to journalConference articlepeer-review

10 Scopus citations

Abstract

This paper presents a new predictive model for the tool-chip interface friction and the chip groove effects in machining with restricted contact grooved tools. This model is derived from the recently established universal slip-line model for machining with restricted contact tools. Four important machining parameters including cutting forces, chip thickness ratio, chip back-flow angle, and chip up-curl radius are predicted in this model on the basis of (1) the rigid-plastic universal slip-line model, (2) a maximum value principle for determining the stress state of the plastic region in machining processes, (3) Dewhurst and Collins' matrix technique for numerically solving slip-line problems, and (4) numerical algorithms for solving non-linear equations. An analysis of the effect of tool geometry parameters, e.g., groove width and backwall height, on machining parameters is presented in this paper. A new methodology for predicting the actual tool-chip friction is also developed and presented in the paper with a case study demonstrating a unique solution. This methodology gives a range of solutions for combinations of tool geometry parameters.

Original languageEnglish
Pages (from-to)469-476
Number of pages8
JournalKey Engineering Materials
Volume233-236
Issue numberII
StatePublished - 2002
EventProceedings of the 6th Asia-Pacific Symposium on Engineering Plasticity and Its Applications (AEPA2002) - Sydney, NSW, Australia
Duration: Dec 2 2002Dec 6 2002

Keywords

  • Chip-groove effects
  • Machining
  • Restricted contact grooved tools
  • Tool-chip interface friction
  • Universal slip-line model

ASJC Scopus subject areas

  • Materials Science (all)
  • Mechanics of Materials
  • Mechanical Engineering

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