Evaluation and Expression of Measurement Uncertainty of Axis Positioning Accuracy of Machine Tools
DOI:
https://doi.org/10.54097/hset.v56i.10201Keywords:
metrology, machine tool, axis positioning accuracy, uncertainty in measurementAbstract
Measure the axis bidirectional positioning accuracy of machine tools with guide rails of 2m, 4m and 10m in length, establish an evaluation model of Measurement uncertainty, and analyze the sources of each uncertainty. Combined with the measurement example, the evaluation process of Measurement uncertainty of axis positioning accuracy of machine tools is expounded, and the linear expression formula of Measurement uncertainty is given.
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References
JJF 1251-2010 Calibration Specification for Measuring System of Coordinate Position. China Metrology Press, 2010.
Chinese standards. GB/T 17421.2-2016, Test code for machine tools-Part 2: Determination of accuracy and repeatability positioning numerically controlled axes. Standards Press of China, 2016.
International Standards. ISO/TR 230-9. International Standards organizations, 2005.
Cao Libo. Evaluation of measure result uncertainty of numerically controlled machine tools’ positoning accuracy. Journal of Aeronautical Measurement Technology, 2003,23(3), 26-29.
JJF1059.1-2012 Evaluation and Expression of Uncertainty in Measurement. China Metrology Press, 2012.
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