Paper Title:
Study on Scanning Squareness Measurement Method and Uncertainty Estimation
  Abstract

This paper presents a scanning squareness measurement method for large ultra-precision components. A rectangular block as the squareness reference is used. The squareness error of the rectangular block is eliminated according to the geometric principle that the sum of four internal angles of a rectangle is 360°. And the straightness error of each line of the rectangular block is eliminated by means of scanning method with two 1D probes. The above two error separation technologies are combined effectively and the data processing method is developed. Additionally, the standard uncertainties including tilt and squareness errors of the rectangular block, temperature drift and random errors of the measured values of the probes are analyzed theoretically. It is confirmed that a combined standard uncertainty of less than 1 arcsec can be obtained for typical values of the parameters.

  Info
Periodical
Key Engineering Materials (Volumes 381-382)
Edited by
Wei Gao, Yasuhiro Takaya, Yongsheng Gao and Michael Krystek
Pages
569-572
DOI
10.4028/www.scientific.net/KEM.381-382.569
Citation
X. Chen, K. Takamasu, "Study on Scanning Squareness Measurement Method and Uncertainty Estimation ", Key Engineering Materials, Vols. 381-382, pp. 569-572, 2008
Online since
June 2008
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Price
$35.00
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