奇数沟千分尺测量结果不确定评定

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【摘要】奇数沟千分尺是应用螺旋副原理和采用V型砧的一种长度计量器具，主要用于测量具有奇数等分槽、齿的制作（如丝锥、铰刀等）外径尺寸的量具。奇数沟千分尺分为三沟千分尺、五沟千分尺、七沟千分尺三类。本文主要介绍了以光滑塞规为标准器评定奇数沟千分尺不确定度过程。

【关键词】奇数沟千分尺；光滑塞规；不确定度

【DOI编码】10.3969/j.issn.1674-4977.2023.03.016

The Evaluation of Uncertainty in Measurement Result of Odd Groove Micrometer

LIU Yixuan

（Liaoning Institute of Measurement，Shenyang 110004，China）

Abstract：Odd groove micrometer is a length measuring instrument using the principle of screw pair and v-drill. It is mainly used for measuring the outer diameter of the production with odd equal slots and teeth（such as taps，reamers，etc.）. Odd groove micrometers are divided into three types：three-groove micrometers，five-groove micrometers and seven-groove micrometers. This paper mainly introduces the uncertainty evaluation of odd groove micrometers using smooth plug gauge as the standard.

Key words：odd groove micrometer；smooth plug gauge；uncertainty

奇数沟千分尺一般由V型砧、测微螺杆、固定套筒、微分筒、测力装置、隔热板、尺架组成，主要用于测量具有奇数等分槽、齿的制作（如丝锥、铰刀等）外径尺寸的量具。（剩余1941字）