坐标测量机面向任务的测量不确定度评定

doi:10.3969/j.issn.1000-1158.2015.06.05

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Abstract Based on geometrical product specification (GPS) and verification, the main sources of task-oriented measurement uncertainty of coordinate measuring machine (CMM) are analyzed. The definition and characteristics of reproducibility, which is one of CMM quantum property factors, are specially discussed. For the measurement task of CMM, the main factors that might cause measurement reproducibility are proposed, the experimental procedure to evaluate reproducibility value is studied, and the mathematical model for reproducibility evaluation is established. Furthermore, the approach to evaluate task-oriented measurement uncertainty of CMM is provided through an example of circle diameter measurement. The results of the example analysis show that the uncertainty component caused by reproducibility is up to 2.5μm when the combined standard uncertainty of circle diameter measurement is determined to be 3.2μm, and it is accounted for the highest proportion of the result uncertainty.

Key words： metrology; CMM; task-oriented; GPS; reproducibility; uncertainty

Received: 23 April 2014 Published: 20 October 2015

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TB92

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	Articles by authors
	CHEN Xiao-huai
	LI Hong-li
	YANG Qiao
	WANG Han-bin
	CHENG Yin-bao

Cite this article:

CHEN Xiao-huai,LI Hong-li,YANG Qiao, et al. Task-oriented Measurement Uncertainty Evaluation of Coordinate Measuring Machine[J]. Acta Metrologica Sinica, 2015, 36(6): 579-583.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2015.06.05 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2015/V36/I6/579

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