>> P.85
QuickGuidetoPrecisionMeasuringInstrumentsQuickGuidetoPrecisionMeasuringInstrumentsGageHead■PlainStemThe“plainstem"typerequiressplittingorothermachiningforinstallation.Takecaresoasnottoexertexcessiveforceonthestem.Ithasawiderrangeofapplicationandallowsforfineadjustmentofthefront/rearpositionduringfinalinstallation.■MeasuringForceThisistheforceexertedonaworkpieceduringmeasurement.Inthecaseofalineargagehead,itexpressesforceatthestrokeendinnewtons.ナット付きステムPlainstem■ComparativeMeasurementAmeasurementmethodwhereaworkpiecedimensionisfoundbymeasuringthedifferenceinsizebetweentheworkpieceandamastergagerepresentingthenominalworkpiecedimension.■PrecautionsinMountingaGageHead•Insertthestemofthegageintothemountingclampofameasuringunitorastandandtightentheclampscrew.•Notethatexcessivelytighteningthestemcancauseproblemswithspindleoperation.•Donotmountbydirectcontactwithascrew.•Alwaysfixthegageheadatthestem.•Mountthegageheadsothatitisinlinewiththeintendeddirectionofmeasurement.Mountingtheheadatanangletothisdirectionwillcauseanerrorinmeasurement.•Exercisecaresoasnottoexertaforceonthegagethroughthecable.■IngressProtectionCodeProtectioncodeIP66TypeLevelDescriptionDegreesofprotectionagainstsolidforeignobjectsDegreesofprotectionagainstwaterDegreesofprotectionagainstsolidforeignobjects6:Dust-proofNoingressofdustallowed.6:ProtectedagainstpowerfulwaterJetsWaterprojectedinpowerfuljetsagainsttheenclosurefromanydirectionshallhavenoharmfuleffects.6:Dust-proofNoingressofdustallowed.IP67Degreesofprotectionagainstwater7:ProtectionagainstwaterpenetrationIP□□GDegreesofprotectionagainstoil-Ingressofwaterinquantitiescausingharmfuleffectsshallnotbepossiblewhentheenclosureistemporarilyimmersedinwaterunderstandardizedconditionsofpressureandtime.Protectionagainstentryofoildropletsorsplashesfromalldirections.■PrecautionsinMountingLGHSeriesTofixtheLaserHologage,insertthestemintothededicatedstandorfixture.Recommendedholediameteronthefixingside:15mm+0.034/+0.014StemClampscrewStemClampscrewClampClamp•Machinetheclampingholesothatitsaxisisparallelwiththemeasuringdirection.MeasurementerrorsmayoccuriftheLGHseriesisinstalledinaninclinedstate.•WhenfixingtheLaserHologage,donotclampthestemtootightly.Overtighteningthestemmayimpairtheslidingabilityofthespindle.•IfmeasurementisperformedwhilemovingtheLGHSeries,mountitsothatthecablewillnotbestrainedandnoundueforcewillbeexertedonthegagehead.1-66
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