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On-line Calibration of Positioning Accuracy of CNC Lathe Using a Double-frequency Laser Interferometer
Integrated Manufacturing Technologies Institute, National Research Council of Canada .ORCID iD: 0000-0001-8679-8049
2005 (English)In: International journal of computer applications in technology, ISSN 0952-8091, E-ISSN 1741-5047, Vol. 24, no 4, p. 212-217Article in journal (Refereed) Published
Abstract [en]

Positioning accuracy is an important factor affecting the performance of CNC machine tools. Targeting a high positioning accuracy, a fast and effective calibration technique is in an increasing demand from both machine tool users and manufacturers. This paper introduces an on-line calibration approach to dynamically evaluate the positioning accuracy of a CNC lathe through statistical estimation. A double-frequency laser interferometer is configured to measure the respective motions in the lathe's two perpendicular axes during the machining process, triggered by a cutting force dynamometer. Positioning accuracycalibration is realised by comparing the nominal positions from the CNC motion controller to their actual values measured by the laser interferometer system. Compared to that achieved at the machine idle state or the free-running state using conventional techniques, this on-line calibration approach provides a more efficient way to get a real picture of the actual performance of a CNC machine tool under its working condition. It also gives a truthful reference to effectively compensate positioning errors of the CNC machine tool.

Place, publisher, year, edition, pages
InderScience Publishers, 2005. Vol. 24, no 4, p. 212-217
Keywords [en]
Laser interferometer; Machine tools; On-line calibration; Positioning accuracy
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-205869Scopus ID: 2-s2.0-28844441660OAI: oai:DiVA.org:kth-205869DiVA, id: diva2:1090594
Note

QC 20170426

Available from: 2017-04-24 Created: 2017-04-24 Last updated: 2017-05-03Bibliographically approved

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Wang, Lihui

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf