外徑千分尺示值誤差測(cè)量結(jié)果的不確定度評(píng)定
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【摘要】本文選用四等量塊對(duì)測(cè)量范圍為0~25 mm,分度值為0.01 mm的千分尺進(jìn)行測(cè)量,得到千分尺的示值誤差,在千分尺檢定規(guī)程上查表得知,0~25 mm外徑千分尺的最大允許誤差為±4μm,即此千分尺示值誤差≤±4μm,在此基礎(chǔ)上對(duì)外徑千分尺示值誤差進(jìn)行不確定度的分析與評(píng)定。
【關(guān)鍵詞】外徑千分尺;示值誤差;不確定度
【DOI編碼】10.3969/j.issn.1674-4977.2023.02.013
Evaluation of Uncertainty in Measurement Results of Indication Error of Outside Micrometer
JI Hong
(Xingcheng Inspection and Testing Center,Xingcheng 125100,China)
Abstract:In this paper,four equal measuring blocks are selected to measure the micrometer with a measuring range of 0~25 mm and a graduation value of 0.01 mm,and the indication error of the micrometer is obtained. According to the table on the micrometer verification regulation,the maximum allowable error of the 0~25 mm outside micrometer is±4μm. Namely,the indication error of the micrometer is≤±4μm. On this basis,the uncertainty of the indication error of the external diameter micrometer is analyzed and evaluated.
Key words:outside micrometer;indication error;uncertainty
千分尺作為常用的測(cè)量工具,由于具有測(cè)量精度高、使用便捷等優(yōu)點(diǎn)而經(jīng)常被企業(yè)用于測(cè)量工件的外形尺寸,是在我國被廣泛使用的一種計(jì)量器具。(剩余2870字)