21307 球基準器を用いた歯車測定機のピッチ測定精度検査 : 基準器の設置に伴う測定不確かさ(OS13 計測・試験における不確かさ評価と応用(2),オーガナイズドセッション)

概要

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Sphere artifact is for evaluation of pitch-measuring accuracy of gear-measuring instruments (GMIs). The sphere artifact is composed of equally spaced spheres around an axis. A GMI measures a pitch of the spheres instead of gear teeth. The GMI is evaluated by comparing the measurement result and a calibrated pitch value. The difference between measurement value and the calibration value includes three error components; (i) GMI errors (ii) a measurement uncertainty for the calibration value (iii) setting errors of the sphere artifact to the GMI. This paper repots the degree to which setting error affects the pitch-measuring accuracy. It can be seen that the setting error for an inclination error is negligible small; on the other hand the setting error for an eccentricity error affects the pitch-measuring accuracy.
2010-03-09