• CN: 11-2187/TH
  • ISSN: 0577-6686

›› 2008, Vol. 44 ›› Issue (9): 220-224.

• Article • Previous Articles     Next Articles

Interferometry Measurement and Errors Compensation of Straightness for Parallel Axis with Straight-line Motion

ZHANG Lixin;HUANG Yumei;QIAO Yanlong   

  1. School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology School of Machinery and Electricity Engineering , Shihezi University
  • Published:2008-09-15

Abstract: The straightness for parallel axis with straight-line motion on hybrid NC machine tools is measured by using Renishaw laser interferometer. The interferometry principles and methods of laser interferometry for straightness are studied. An interferometry method and a model building of straightness for straight-line motion with parallel axis are proposed. The method and algorithm for evaluating straightness based on Renishaw laser interferometer are analyzed. The characteristic curve of two-way mean deviation for straightness is plotted. The mathematical model of straightness for parallel axis is derived. The average errors compensation model of straightness is obtained by making use of least squares fitting. Straightness of parallel axis with straight-line motion is compensated and the precision of hybrid NC machine tools is increased.

Key words: Compensation, Error model, Interferometry, Parallel axis, Straightness

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