>> P.200
QuickGuidetoPrecisionMeasuringInstruments■GuidelinesforSelf-madeFixturesAmicrometerheadshouldbemountedbythesteminanaccuratelymachinedholeusingaclampingmethodthatdoesnotexertexcessiveforceonthestem.Therearethreecommonmountingmethodsasshownbelow.Method(3)isnotrecommended.Adoptmethods(1)or(2)whereverpossible.(1)Clampnut(2)Split-bodyclamp(3)Setscrewclamp(Unit:mm)MountingmethodPointstokeepinmindStemdiameterMountingholeFittingtolerancePrecautionsFaceAø9.5ø10ø12ø18ø9.5ø10ø12ø18ø9.5ø10ø12ø18G7G7G7G7+0.005to+0.020+0.006to+0.024+0.005to+0.020+0.006to+0.024H50to+0.006H50to+0.008CareshouldbetakentomakeFaceAsquaretothemountinghole.Thestemcanbeclampedwithoutanyproblematsquarenesswithin0.16/6.5.Removeburrsgeneratedonthewallofthemountingholebytheslittingoperation.M3×0.5orM4×0.7isanappropriatesizeforthesetscrew.Limitcountersinkingintostemto90º×0.5andbecarefulnottodamagethestemintheprocess.3-67
| < 
| 
> | 
>>
