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1、齿轮蜗杆试题1,fillintheblanks(1minute,30minutes)1.Gearcommonlyusedmaterialshaveforgedsteel,caststeel,castironandnon-metalliematerials・2.Thecommonfailureformsofgeararebrokengeartoothpastry,corrosion,toothsurfacewear,agglutinationandgeartoothsurfacesSurfaceplasticdeformation.Thewormdriveefficiencyisengag
2、edintheefficiencyofmeshingefficiency,bearingefficiencyandoilstirring.4.Generallyconsistsofouterring,innerring,rollingbearingsofrollingelementandcage・Accordingtothegeartrain,thegearispositionedrelativetotheframeItistheshaftrotationandtherotatingwheelsystem・Accordingtotheloadnatureofthebearings,the
3、axisofrotation,spindleandtransmissionshaftaredivided.Themachinedmethodofgeartoothisdividedintocopyingmethodandexhibitionmethod・8.ThroughtheaxisofthewormAndisperpendiculartotheplaneoftheturbineaxisplane,theplaneinthemiddle,wormandwormgearmeshingengagementofinvolutegearandrack.Generallyspeaking,_ro
4、ller_bearingismoreabletowithstandimpact,_ball_bearingsaremoresuitableforworkingathigherspeeds・ThethreeformsofcommonflatbondsaretypeA,typeBandC.Theratioofthediameterofawormtoamoduleiscalledthediameterofaworm・Theweeklyorientationofthepartsontheshaftismainlyusedforbonding,splineandoverwork・Thecontac
5、taccuracyofthegearmeshesisthesameasthesameasthepressureAngle・Individualchoice(1point,10points)Theamodulusofthehelicalgearisstandatd・A.normalb.endc.larged.smallFornormalwormtransmission,themaindimensionsofdaretobecalculated・TheplaneoftheplaneoftheplaneTheidlewheelinthewheelisusedtochangeb.Thetrans
6、missionofAC.drivedistanceDItisonlyusedtosupportrotatingpartswithoutthetransmissionofpower,namely,theaxisofbendingwithouttorqueisa・A.spindleb.axisc.axisd.axisThetypecodefordeepgrooveballbearingisa・A.1b・3c.5d.6Thegear,wheelandsoonmustbefixedreliablyontheshaftandtransfertorque,widelyadoptedaforfixed
7、.A.ThesplineB.Thesplineconnectingc.theconnectingDTheclosedgeartransmissionforthesurfacehardnessHBislessthan350.Thedesignisusually_a.A.first,b.first,bythecontactstrengthconditionC.first,tocalculateDUsecwhenheavyloadsors
