Reduction of machining errors of a three-axis machine tool by on-machine measurement and error compensation system

J. P. Choi, B. K. Min, S. J. Lee

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68 Citations (Scopus)

Abstract

This paper suggests a method to reduce the machining errors of a three-axis machine tool by implementing an on-machine measurement with a touch probe. Probing errors of a touch probe and positioning errors of a machine tool, inevitably included in the measurement data, are compensated for to obtain the true machining errors for the repeated machining process. Positioning errors of a tool/probe tip are modelled by approximating error components as polynomial functions and considering the effects of backlash errors. To estimate the unknown model parameters, a cube array artifact composed of eight cubes is proposed and calibrated on a CMM. Simulation results and verification experiments showed that the measured and predicted positioning errors agree well within less than 10 μm for all axes. The actual cutting test of a simple block and two-dimensional curves showed that the machining errors are reduced to within 10 μm after error compensation.

Original languageEnglish
Pages (from-to)2056-2064
Number of pages9
JournalJournal of Materials Processing Technology
Volume155-156
Issue number1-3
DOIs
Publication statusPublished - 2004 Nov 30

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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