Uncertainty evaluation of CMM by modeling with spatial constraint in error

M. Abbe, M. Nara, K. Takamasu

Abstract

A noble simulation method for evaluating task specific uncertainty in coordinate metrology is proposed. Provided that specification or test result conforming to ISO 10360-2 is available, both variance of point coordinates and covariance expressing the mutual influence is handled to perform Monte Carlo simulation reflecting spatial constraint in error of CMM. Development and implementation of the over all procedures are pursued to apply them on real CMM. Comparison result between uncertainties obtained by the proposed method and that by experimental measurements shows good agreement. However the worst shows 1 μm over-estimated, and the functionality and the characteristic of ease to use are validated.

Keywords

CMM; uncertainty; modeling; simulation

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IMEKO-TC14-2007-21.pdf

DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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