>> P.197
Ⅱ-147PrecautionforUse❶ountingsurface,referencemountingsurfaceandtypicalmountingstructureWhenmountingtheLWFseries,properlyalignthereferencemountingsurfaceBandDofthetrackrailandslideunitwiththereferencemountingsurfaceofthetableandbedandfixthem.(SeeFig.3.)ThereferencemountingsurfacesBandDandmountingsurfacesAandCarepreciselyground.Machiningthemountingsurfaceofthetableandbed,suchasmachineordevice,tohighaccuracyandmountingthemproperlywillensurestablelinearmotionwithhighaccuracy.Referencemountingsurfaceoftheslideunitistheoppositesideofthemark.Thetrackrailreferencemountingsurfaceisidentifiedbylocatingthemarkonthetopsurfaceofthetrackrail.Itisthesidesurfaceabovethemark(inthedirectionofthearrow).(SeeFig.4)Fig.3ReferencemountingsurfaceandtypicalmountingstructureFig.4ReferencemountingsurfaceDCABReferencemountingsurfaceBDMarkTrackrailSlideunitMark❷houlderheightandcornerradiusofthereferencemountingsurfaceFortheoppositecornerofthematingreferencemounting,itisrecommendedtohaverelievedfilletasindicatedinFig.5.RecommendedvaluefortheshoulderheightandcornerradiusonthematingsideisindicatedinTable17.1andTable17.2.Fig.5Cornerofthematingreferencemounting❸TighteningtorqueforfixingscrewTypicaltighteningtorqueformountingoftheLWFseriestothesteelmatingmembermaterialisindicatedinTable16.Whenvibrationandshockofthemachineordevicearelarge,fluctuatingloadislarge,ormomentloadisapplied,fixitbyusingthetorque1.2to1.5timeslargerthanthevalueindicatedinthetableasnecessary.Ifthematingmembermaterialiscastironoraluminumalloy,reducethetighteningtorquedependingonthestrengthcharacteristicsofthematingmembermaterial.Table16TighteningtorqueforfixingscrewBoltsizeTighteningtorqueN・mHighcarbonsteel-madescrewStainlesssteel-madescrewM4×0.74.12.5M5×0.88.05.0M6×113.68.5M8×1.2532.7-M10×1.563.9-Remark:hetighteningtorqueiscalculatedbasedonstrengthdivision12.9andpropertydivisionA2-70.
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