Analysis of machining stability for a parallel machine tool

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Abstract

Machine tool chatter is a self-excited vibration generated by chip thickness variation. It severely degrades the quality of the machined surface. The incidence of chatter is greatly affected by the dynamic characteristics of machine tool structure. This article extends chatter stability analysis to a machine tool equipped with a parallel mechanism. The vibration model of a parallel machine tool is derived, in which the legs of the parallel mechanism are considered as spring-damper systems. Then, the regenerative cutting dynamics is combined with the vibration model and stability analysis is performed. The chatter stability charts for various machining parameters are examined, with the example of the cubic parallel mechanism that is specially designed for machine tool use.

Original languageEnglish
Pages (from-to)509-528
Number of pages20
JournalMechanics Based Design of Structures and Machines
Volume31
Issue number4
Publication statusPublished - 2003 Nov 6

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Keywords

  • Chatter
  • Cutting dynamics
  • Parallel machine tool
  • Stability chart

ASJC Scopus subject areas

  • Engineering(all)

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