>> P.31
Mounting❺Preloadadjustment・Preloadadjustmentisperformedwithfixingscrewsofthetable-sidewaytightenedtemporarily.・Preloadadjustmentisstartedfromthepreloadadjustingscrewatthecenterofwaylengthandthenbothendsinturn.・Whilemeasuringtheclearanceonthetablesides,tightenthepreloadadjustingscrewssubsequentlyuntildeflectionofthedialgaugestops.Measurethetighteningtorqueforpreloadadjustingscrewsatthispoint.・Whenadjustingpreloadadjustingscrewneareitherend,strokethetablesoftlyandcheckthatthecylindricalrollerisonthepreloadadjustingscrewsection.・Aftertheaboveprocedure,theclearancebecomeszeroorinslightpreloadstate,butpreloadisstillnotadjustedevenly.Withthesameprocedureagain,re-adjustallthepreloadadjustingscrewsevenlytothetorquepreviouslymeasured..giF24Exampleofpreloadadjustmentmethod❻Fulltighteningofpreload-adjustment-sideway・Fixingscrewsarelightlytightenedtoeventorque.Aswithpreloadadjustingscrews,temporarilyfixthemtotorquesimilartothespecifiedtorqueinturnfromthewaycentertobothends.・Whentighteningfixingscrewsneareitherend,strokethetablesoftlyandcheckthatthecylindricalrollerisonfixingscrewsection.・Finallywiththesameprocedure,fullytightenallthefixingscrewsevenlytothespecifiedtorque.❼Checkafterassembly・Fullystrokethetablesoftlyandcheckthatrunningissmoothwithoutabnormalnoise.・Measurethetableupperandsidesurfaceswithdialgaugeorthelikeandchecktherunningaccuracy.High-accuracymountingofstandardtypeCRWseriesTypicalmountingstructureisshowninFig.26.Formountingatthispoint,generallyfollowtheprocedurebelow.Fixing-sidewayBed-sidewayBed-sidewayPreload-adjustment-sidewayPreloadadjustingscrew.giF26MountingexampleofstandardtypeCRWseries❶Preparationformounting・Productsarepackedbyset(4waysand2pairsofrollercages).Becarefulnottomixwithothersets.・Cleaneachpartwithcleanwashfluidandthenapplyrustpreventionandlubricationoil.Tocleanfurther,removetheendscrewfirst.❷Cleanupofmountingsurface・Removeburrsandblemishesonthemachinemountingsurfacewithanoil-stone,etc.Becarefulaboutcornergrooveonthemountingsurface,too.・Wipeoffdustanddirtwithcleanclothandapplyrustpreventionandlubricationoillightly.CornergrooveCornergrooveMountingsurfaceCMountingsurfaceAMountingsurfaceAMountingsurfaceBMountingsurfaceAMountingsurfaceBMountingsurfaceACornergroove.giF27Mountingsurface.giF25AccuracycheckafterassemblyⅡ-23
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