Error analysis and compensation for the volumetric errors of a vertical machining centre using a hemispherical helix ball bar test

S. H. Yang, K. H. Kim, Y. K. Park, S. G. Lee

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

Machining accuracy is directly influenced by the quasi-static errors of a machine tool. Since machine errors have a direct effect upon both the surface finish and geometric shape of the finished workpiece, it is imperative to measure the machine errors and to compensate for them. A laser measurement system to identify geometric errors of a machine tool has disadvantages, such as a high cost, a long calibration time and the usage of a volumetric error synthesis model. In this study, we proposed a novel analysis of the geometric errors of a machine tool using a ball bar test without using a complicated error synthesis model. Also, a statistical analysis method was employed to derive geometric errors using a hemispherical helix ball bar test. According to the experimental result, we observed that geometric errors of the vertical machining centre were compensated by 88%.

Original languageEnglish
Pages (from-to)495-500
Number of pages6
JournalInternational Journal of Advanced Manufacturing Technology
Volume23
Issue number7-8
DOIs
StatePublished - 2004

Keywords

  • Error compensation
  • Hemispherical helix ball bar test
  • Machine tool errors
  • Regression analysis
  • Volumetric error synthesis model

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