Measurement methods for the position errors of a multi-axis machine. Part 1: Principles and sensitivity analysis

Shih Ming Wang, Kornel F. Ehmann*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

Accurate measurement of errors is an essential part of error compensation. By using telescoping ball-bars, two measurement methods, characterized by low cost, simplicity of setup, and quick measurements are developed to directly identify the total position errors at the tip of the tool of a multi-axis machine tool without the use of an error model. The first method uses the well known triangulation principle that requires three reference points. The second, referred to as the single socket method, utilizes a single reference point, offering thereby a higher degree of dexterity and flexibility. In addition, sensitivity analysis is used to investigate the accuracy of the two methods with respect to two error factors: errors of the ball-bar system, and location errors of the reference point.

Original languageEnglish (US)
Pages (from-to)951-964
Number of pages14
JournalInternational Journal of Machine Tools and Manufacture
Volume39
Issue number6
DOIs
StatePublished - Jun 1999

Keywords

  • Ball-bar methods
  • Error measurement
  • Position error

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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