マイクロメータの操作過程による個人誤差の発生機構

概要

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This paper describes some experiments with the personal error of micrometers caused by operational process. In the evaluation of the performance of micrometers. YANO et al, pointed out thatmeas-uring error analyzed on an experimental planning method exceeded overall error stipulated in "JIS B 7502" in the case of the unskilled. This error was thought to be due to the operational process of ratchet stops. A new method with small load cell between spindle and anvil faces without play enables one to measure the measuring forces of mi-crometers far more accurately. Main results are as follows : (1) A noticeable linear regression relations are found out between measuring forces and rota-tional speeds of ratchet stops just before the colli-sions of the spindle faces with measuring objects. (2) The variations of rotational speeds of ratchet stops by operators cause those of measuring forces about from 6 to 50 N (0.6 to 5 kgf) and those of readings over 10 μm based mainly on the deformation of the frame.
公益社団法人精密工学会の論文
1984-11-05