Identification of shearing and ploughing cutting constants from average forces in ball-end milling

Junz Jiunn-jyh Wang, C. M. Zheng

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

This paper presents an analytical model for the direct identification of global shearing and ploughing cutting constants from measured average cutting forces in ball-end milling. This model is based on the linear decomposition of elemental local cutting forces into a shearing component and a ploughing component. Then, a convolution integral approach is used to obtain the average cutting forces leading to a concise and explicit expression for the global shearing and ploughing cutting constants in terms of axial depth of cut, cutter radius and average milling forces. The model is verified by comparisons with an existing force model of variable cutting coefficients. Cutting constants are identified through milling experiments and the prediction of cutting forces from identified cutting constants coincides with the experimental measurements. A model for identifying the lumped shearing constants is obtained as a subset of the presented dual mechanism model. Experimental results indicate that a model with dual-mechanism cutting constants predicts the ball-end milling forces with better accuracy than the lumped force model.

Original languageEnglish
Pages (from-to)695-705
Number of pages11
JournalInternational Journal of Machine Tools and Manufacture
Volume42
Issue number6
DOIs
Publication statusPublished - 2002 May 1

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

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