The mystery of missing feed force — The effect of friction models, flank wear and ploughing on feed force in metal cutting simulations

Sampsa V.A. Laakso, Mathias Agmell, Jan-Eric Ståhl

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Abstract

Underestimated feed force is a known systematic error in cutting simulations. It is considered a consequence of inaccurate friction models, but there are indicators that friction is not the only reason for the error. In some cases, the value of Coulomb friction must be over 1.0 to compensate for the feed force and such values cause over-estimated chip thickness for example. In turning, the ploughing force of the tool is affected by the feed velocity, which changes with the work diameter when cutting speed is constant. In addition, the edge geometry of the tool affect the ploughing force. In this paper, friction, edge geometry and the plough force are investigated with experiments and simulations to identify their effect on feed force.
Original languageEnglish
Pages (from-to)268 - 277
Number of pages10
JournalJournal of Manufacturing Processes
Volume33
DOIs
Publication statusPublished - 1 Jun 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • Metal cutting simulations
  • Feed force
  • Friction
  • Tool plough
  • Turning

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