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本文根据JJF1345-2012《圆柱螺纹量规校准规范》的要求建立测量模型,详细分析了用三针法测量圆柱螺纹量规单一中径的不确定度来源,给出了不确定度分量的评定步骤及测量不确定度评定方法。
According to the requirements of JJF1345-2012 “Calibration Standard for Cylindrical Thread Gauge”, the measurement model is established. The source of uncertainty for measuring the single medium diameter of the cylindrical thread gauge by the three-needle method is analyzed in detail. The procedure and measurement of the uncertainty component are given Uncertainty assessment method.