>> P.32
Ⅱ-241N=0.102kgf=0.2248lbs.1mm=0.03937inch❸Mountingofbed-sideway・Properlyalignthewaywithmountingsurfaceandtemporarilytightenfixingscrewsevenlytothetighteningtorque.・WhilemakingthewaystickingtoBsurface(refertoFig.27)tight,fullytightenthescrewstothespecifiedtorque.・Whenhighrunningaccuracyisrequired,fullyandevenlytightenthemtothespecifiedtorquewhilecheckingtheparallelismoftheracewayalongthefulllengthoftheway.・TypicaltighteningtorqueforfixingscrewisaccordingtoTable10inpageⅡ-20.Fig.28Accuracyofwaymounting❹Mountingoftable-sideway・Properlyalignthefixing-sidewaywithmountingsurfaceandtemporarilytightenfixingscrewsevenlytothetighteningtorque.・Whilemakingthefixing-sidewaystickingtoCsurfacetight,fullytightenthescrewstothespecifiedtorque.・Setbackthepreloadadjustingscrewsinadvance,makethepreload-adjusting-sidewaystickingtothemountingsurface,andthentemporarilytightenfixingscrewslightlytotheeventorque.Fig.29Mountingoftable-sidewayAAAΔΔΔCsurfaceFixing-sidewayPreload-adjustment-sidewayPreloadadjustingscrew❺Operationoftableandbed・Makealignmentofthepositioninheightandcrossdirectionsothattherollercagecanbeinsertedbetweenthetable-sidewayandbed-sideway.・Carefullyinserttherollercageandassemblyitatapproximatecenterofthewaylength.Atthispoint,becarefulnottodeformthecage.・Mountendscrewsandendstopperofeachway.・Pushtheentiretableagainstthepreloadadjustingscrewsandtightenthepreloadadjustingscrewstomaketemporaryadjustmentuntiltheclearancebetweenwaysbecomeszero.・Fullystrokethetablesoftlyandcorrecttherollercagepositiontothecenter.Fig.30Positionalignmentbeforeoperation❻Preloadadjustment・Preloadadjustmentisperformedwithfixingscrewsofthepreload-adjusting-sidewaytightenedtemporarily.・Preloadadjustmentisstartedfromthepreloadadjustingscrewatthecenterofwaylengthandthenbothendsinturn.・Whilemeasuringtheclearanceonthetablesides,tightenthepreloadadjustingscrewssubsequentlyuntildeflectionofthedialgaugestops.Measurethetighteningtorqueforpreloadadjustingscrewsatthispoint.・Whenadjustingpreloadadjustingscrewneareitherend,strokethetablesoftlyandcheckthatthecylindricalrollerisonthepreloadadjustingscrewsection.・Aftertheaboveprocedure,theclearancebecomeszeroorinslightpreloadstate,butpreloadisstillnotadjustedevenly.Withthesameprocedureagain,re-adjustallthepreloadadjustingscrewsevenlytothetorquepreviouslymeasured.Fig.31Exampleofpreloadadjustmentmethod
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