>> P.539
Ultra-neFeedApplications■Dedicatedmicrometerheadsareavailableformanipulatorapplications,etc.,whichrequireultra-nefeedoradjustmentofspindle.ThimbleDiameter■Thediameterofathimblegreatlyaffectsitsusabilityandthe"neness"ofpositioning.Asmall-diameterthimbleallowsquickpositioningwhereasalarge-diameterthimbleallowsnepositioningandeasyreadingofthegraduations.Somemodelscombinetheadvantagesofbothfeaturesbymountingacoarse-feedthimble(speeder)onthelarge-diameterthimble.MicrometerHeadsGraduationStyles05504525204505NormalgraduationstyleReversegraduationstyle052520208010900090108020Bidirectionalgraduationstyle■Careisneededwhentakingareadingfromamechanicalmicrometerhead,especiallyiftheuserisunfamiliarwiththemodel.■The"normalgraduation"style,identicaltothatofanoutsidemountedmicrometer,isthestandard.Forthisstylethereadingincreasesasthespindleretractsintothebody.■Onthecontrary,inthe“reversegraduation”stylethereadingincreasesasthespindleadvancesoutofthebody.■The“bidirectionalgraduationstyle”isintendedtofacilitatemeasurementineitherdirection.Thenumbersaredisplayedinblackandredintherespectivedirectionsforeasyreading.■Micrometerheadswithamechanicalorelectronicdigitaldisplay,whichallowdirectreadingofameasurementvalue,arealsoavailable.Thesetypesarefreefrommisreadingerrors.Afurtheradvantageisthattheelectronicdigitaldisplaytypecanenablecomputer-basedstorageandstatisticalprocessingofmeasurementdata.GuidelinesforSelf-madeFixturesAmicrometerheadshouldbemountedbythestem.Itmustbemountedsecurelyandpreciselyusingaclampingmethodthatdoesnotexertexcessivecompressiononthestem.Therearethreecommonmountingmethodsasshownbelow.Method(3)isnotrecommended.Adoptmethods(1)or(2)whereverpossible.Mountingmethod(1)Clampnut(2)Split-bodyclamp(3)Setscrewclamp(Unit:mm)MicrometerHeadstheisanappropriateM3x0.5orM4x0.7setscrew.Limitcountersinkingcarefulnottodamagethestemintheprocess.stemintosizeforto90°×0.5andbe13-12FaceAPointstokeepinmindStemdiameterMountingholeø9.5ø10ø12ø18ø9.5ø10ø12ø18ø9.5ø10ø12ø18G7G7H5Fittingtolerance(mm)+0.005to+0.020+0.006to+0.024+0.005to+0.020+0.006to+0.0240to+0.0060to+0.008PrecautionstakenshouldbeCaremountinghole.Thecansquarenesswithin0.16/6.5.stembetomakeFaceAsquaretotheclampedwithoutanyproblematburrsRemovemountingholebytheslittingoperation.generatedtheonwallofthe
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