Volumetric error analysis of a Stewart platform-based machine tool

A. J. Patel*, K. F. Ehmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

136 Scopus citations

Abstract

Striving for greater accuracy, some machine tool manufacturers are developing parallel structures for the next generation machine tool. Therefore, tools are needed to analyze the effect error sources have on this type of structure. A model of a Stewart Platform based machine tool is developed that provides the framework for inclusion of all relevant error sources. An error analysis is presented based on an error model formed through differentiation of the kinematic equations, and a sensitivity analysis is given as a design tool for tolerance allocation during manufacture. Finally, automated error analysis software is demonstrated that graphically depicts position and orientation errors along tool paths and throughout the workspace.

Original languageEnglish (US)
Pages (from-to)287-X62
JournalCIRP Annals - Manufacturing Technology
Volume46
Issue number1
StatePublished - Jan 1 1997

Keywords

  • Accuracy Analysis
  • Error Analysis
  • Error Sensitivity

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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