千分尺示值误差不确定度评定及在形位误差测量中的应用

Evaluation of Uncertainty in Micrometer Indication Error and Application in Measurement of Form and Position Errors

几何量测量在电机研发、生产及制造中均广泛存在,而分析测量结果的质量如何,测量不确定就是一个衡量尺度,本文首先对标准不确定的A类及B类评定方法及流程进行介绍,再通过实例对日常检测中使用的外径千分尺示值误差的不确定度进行了计算,并对外径千分尺两点法测量圆度误差进行了探究。

Geometric measurement is widely used in the research and development,production,and manufacturing of electric motors.Analyzing the quality of measurement results,measurement uncertainty is a measurement.This article first introduced the A-class and B-class evaluation methods and processes for standard uncertainty.Then,through practical examples,the uncertainty of the indication error of the outer diameter micrometer used in daily testing was calculated,and the measurement uncertainty of roundness measurement error using the two-point method of the outer diameter micrometer was explored.