Affiliation:
1. Guilin University of Electronic Technology
Abstract
Coordinate measuring machine (CMM) plays a more and more important role in the flatness evaluation. The pre-processing for eliminating error data is an important process to improve the quality of flatness evaluation. So, flatness uncertainty estimation becomes a key problem. To solve the problem, a flatness uncertainty estimation method based on data elimination is presented. Firstly, a method for excluding the error data based on statistical theory is expatiated with the consideration of probability theory and mathematical statistics. Secondly, details of calculating flatness uncertainty based on least-square method are analyzed. Then the measured 3-dimensional data are processed so as to put the excluding method into use. So the error data can be deleted and the flatness uncertainty can be decreased and can achieve a good evaluation quality. Finally, an example is given and the result shows that the method proposed in this paper is feasible.
Publisher
Trans Tech Publications, Ltd.
Reference10 articles.
1. Z.Y. Wang, Z.M. Liu, X.T. Xia and L.Q. Zhu: Measurement Error and Uncertainty Evaluation (Science Press, China 2008) (In Chinese).
2. G.X. Zhang: Coordinate Measuring Machines (Tianjin University Press, China 1999) (In Chinese).
3. W. Choi, T.R. Kurfess and J. Cagan: Precision Engineering, Vol. 22 (1998), pp.153-163.
4. X.Q. Jiang: Theory and Applications of , ew-Generation Geometrical Product Specifications (Higher education press, China 2007) (In Chinese).
5. T. Weber, S. Motavalli, B. Fallahi and S.H. Cheraghi: Precision Engineering, Vol. 26 (2002): pp.269-278.
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