基于坐标测量机的圆度误差测量不确定度分析

Measurement Uncertainty Analysis of Roundness Errors Based on Coordinate Measuring Machines

测量圆度的仪器众多,如指示表、测微计、圆度仪、影像仪、坐标测量机等。坐标测量机因测量圆度精度高、效率高的特点而得到了广泛应用。测量不确定度作为评价测量结果质量的重要指标,其来源非常复杂,不仅与坐标测量机本身的精度有关,还与采样策略、被测工件、环境条件及数据处理方法等因素有关。本文主要针对坐标测量机的圆度误差进行测量不确定度分析。

There are many instruments used for measuring roundness,such as dial indicators,micrometers,roundness testers,vision systems,and coordinate measuring machines(CMMs).CMMs are widely used due to their high precision and efficiency in measuring roundness.Measurement uncertainty is an important indicator for evaluating the quality of measurement results.It is influenced by various factors,including the accuracy of the CMM itself,sampling strategies,the measured workpiece,environmental conditions,and data processing methods.This article focuses on the measurement uncertainty analysis of roundness errors in CMMs.