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1、FCJ21-1995共1页第1页PAGE1OF1成都飞机工业(集团)有限责任公司企业标准CHENGDUAIRCRAFTINDUSTRIAL(GROUP)COMPANYLIMITEDENTERPRISESTANDARDFCJ21-1995千分尺校准方法METHODFORCALIBRATIONOFMICROMETER共23页23PAGESFCJ21-1995共1页第1页PAGE1OF1更改单记录RecordofChangeSheet更改单编号ChangeSheetNo.接收人Receiver日期Date备注RemarksFCJ21
2、-1995共21页第21页PAGE21OF211.范围Scope本标准规定了千分尺,包括公制和英制外径千分尺、数显千分尺及板厚千分尺、壁厚千分尺、锥测头千分尺的要求、校准条件、校准项目及校准方法、校准结果的处理和校准周期。Thisstandardspecifiestherequirements,calibrationterms,calibrationitems,calibrationmethods,calibrationresulthandlingandcalibrationperiodictimeofmicrometers,
3、includingmetricsystemandBritishsystemexternalmicrometers,digimaticmicrometers,slabthicknessmicrometers,armthicknessmicrometers,andconicalgaugeheadmicrometers.,本标准适用于使用中和修理后表1所列规格的外径千分尺、数显千分尺及板厚千分尺、壁厚千分尺、锥测头千分尺(公英制)的校准。Thisstandardisapplicableforthecalibrationofthefo
4、llowingmicrometersinuseandrepaired,includingmetricsystemandBritishsystemexternalmicrometers,digimaticmicrometers,slabthicknessmicrometers,armthicknessmicrometers,andconicalgaugeheadmicrometers.表1各规格千分尺的主要技术指标序号测量范围mm平行度允差mm示值误差允许值mm10~252±4225~502.5±4350~1003±44100~
5、1504±55150~2006±66200~3007±77300~400_±88400~500_±109500~600_±3or±510600~700_11700~800_12800~900_13900~1000_注1:当测微头的示值范围为25mm时,示值误差应不超过±3mm。注2:当测微头的示值范围为50mm时,示值误差应不超过±5mm。Table1ThemaintechnicalindexofmicrometersinvariousspecificationsFCJ21-1995共21页第21页PAGE21OF21S/N.
6、ScopeofmeasurementmmParallelismtolerancemmIndicationdeviationallowablemm10~252±4225~502.5±4350~1003±44100~1504±55150~2006±66200~3007±77300~400_±88400~500_±109500~600_±3or±510600~700_11700~800_12800~900_13900~1000_Note1:whenindicationscopeofmicrometerheadbe25mm,indic
7、ationdeviationshallbewithin±3mm.Note2:whenindicationscopeofmicrometerheadbe50mm,indicationdeviationshallbewithin±5mm.2.规范性引用文件ReferencedNormativeDocuments本章无条文。N.A.3.术语、符号TerminologiesandSymbols本章无条文。N.A.4.概述General千分尺是由尺架、尺砧、测微螺杆、测力装置和锁紧装置等组成。千分尺是应用螺旋副传动的一种量具,主要用于测
8、量各种外尺寸。Micrometeriscomposedofstand,anvil,micrometricscrew,forcedevice,lockingapparatus,etc.Micrometer,ameasuringimplementdrovebyscrewpair,