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首页> 外文期刊>Metrologia: International Journal of Scientific Metrology: = Internationale Zeitschrift fur Wissenschaftliche Metrologie: = Journal International de Metrologie Scientifique >Methods for determining the effect of flatness deviations, eccentricity and pyramidal errors on angle measurements
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Methods for determining the effect of flatness deviations, eccentricity and pyramidal errors on angle measurements

机译：确定平面度偏差，偏心率和棱锥误差对角度测量的影响的方法

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摘要

In angle calibrations the uncertainty contributions of the autocollimator and index table are easily estimated as these uncertainties are well documented, but it is more difficult to determine the uncertainties associated with flatness deviations, eccentricity and pyramidal errors of the measuring faces. Deviations in the flatness of angle surfaces have been held responsible for the lack of agreement in angle comparisons. An investigation has been carried out using a small-angle generator and an autocollimator to determine the effect of flatness deviations of the measuring surfaces on angle measurements. The small-angle generator, together with a translation stage and tilt table, was also used to determine the effect of eccentricity and pyramidal errors. These methods were developed to calculate the related uncertainties associated with flatness deviations, eccentricity and pyramidal errors on face-to-face angle measurements. The results show that flatness and eccentricity deviations have less effect on angle measurements than do pyramidal errors.
机译：在角度校准中，很容易估算出自动准直仪和索引表的不确定性贡献，因为这些不确定性已得到充分证明，但要确定与测量面的平面度偏差，偏心率和锥体误差相关的不确定性更加困难。角度表面平整度的偏差被认为是造成角度比较不一致的原因。已经使用小角度发生器和自动准直仪进行了研究，以确定测量表面的平面度偏差对角度测量的影响。小角度发生器，以及一个平移台和倾斜台，也被用来确定偏心率和锥体误差的影响。开发这些方法是为了计算与平面度偏差，偏心率和棱锥误差相关的不确定度，以进行面对面角度测量。结果表明，平坦度和偏心度偏差对角测量的影响小于金字塔误差。

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