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TestingParallelismofMicrometerMeasuringFacesOpticalparallelreadingdirectiononthespindlesideTestingFlatnessofMicrometerMeasuringFacesInterferencefringereadingdirectionOpticalparallelFringesonthespindlesideParallelismcanbeestimatedusinganopticalparallelheldbetweenthefaces.First,wringtheparalleltotheanvilmeasuringface.Thenclosethespindleontheparallelusingnormalmeasuringforceandcountthenumberofredinterferencefringesseenonthemeasuringfaceofthespindleinwhitelight.Eachfringerepresentsahalfwavelengthdifferenceinheight(0.32μmforredfringes).Intheabovegureaparallelismofapproximately1μmisobtainedfrom0.32μm×3=0.96μm.アンビル側GeneralNotesonUsingtheMicrometer1.Carefullycheckthetype,measuringrange,accuracy,andotherspecicationstoselecttheappropriatemodelforyourapplication.2.Leavethemicrometerandworkpieceatroomtemperaturelongenoughfortheirtemperaturestoequalizebeforemakingameasurement.3.Lookdirectlyattheduciallinewhentakingareadingagainstthethimblegraduations.Ifthegraduationlinesareviewedfromanangle,thecorrectalignmentpositionofthelinescannotbereadduetoparallaxerror.(a)(b)(c)ThimbleSleeve(a)Fromabovetheindexline(b)Lookingdirectlyattheindexline(c)Frombelowtheindexline4.Wipeoffthemeasuringfacesofboththeanvilandspindlewithlint-freepapersetthestart(zero)pointbeforemeasuring.02-81OpticalflatAnvilOpticalflatAnvilMeasuringfaceiscurvedbyapproximately1.3μm.(0.32μm×4pairedredfringes.)Measuringfaceisconcave(orconvex)approximately0.6μmdeep.(0.32μm×2continuousfringes)5.Wipeawayanydust,chipsandotherdebrisfromthecircumferenceandmeasuringfaceofthespindleaspartofdailymaintenance.Inaddition,sufcientlywipeoffanystainsandngerprintsoneachpartwithdrycloth.6.Usetheconstant-forcedevicecorrectlysothatmeasurementsareperformedwiththecorrectmeasuringforce.7.Whenattachingthemicrometerontoamicrometerstand,thestandshouldclampthecenterofthemicrometerframe.Donotclampittootightly.8.Becarefulnottodroporbumpthemicrometeronanything.Donotrotatethemicrometerthimbleusingexcessiveforce.Ifyoubelieveamicrometermayhavebeendamagedduetoaccidentalmishandling,ensurethatitisinspectedforaccuracybeforefurtheruse.9.Afteralongstorageperiod,orwhenthereisnoprotectiveoillmvisible,lightlyapplyanti-corrosionoiltothemicrometerbywipingwithaclothsoakedinit.Whenstoringthemicrometer,alwaysleaveagapof0.1to1mmbetweenthemeasuringfaces.Donotstorethemicrometerinaclampedstate.・Avoidstoringthemicrometerindirectsunlight.Storethemicrometerinaventilatedplacewithlowhumidity.Storethemicrometerinaplacewithlittledust.Storethemicrometerinacaseorothercontainer,whichshouldnotbe10.Notesonstorage:・・・・keptontheoor.・
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