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外文翻译--变圆弧齿轮的形成原理及特性.doc

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外文翻译--变圆弧齿轮的形成原理及特性.doc

VariableArcGearPrincipleandtheFormationofTangWei2008128AbstractToaclassofvariablearcgear.Useofdeviationfunction,giventhetoothprofileofthestructuralintegrityoftheprocess,proveditstoothprofileengagementtomeetthebasiclawoftoothprofileequationderivedbasicformula,discussedthechangingarcofthegear,giventhechangingarctoothProfileexamplessuchgearhasahighcarryingcapacity,especiallyforhighspeed,highprecisionCNCmachining,itwillbeoccasionsintheheavytransmissionapplications.Keywordsgear,profile,deviationfunction,engagementprinciple,gearstrengthIntroductionWiththedevelopmentofscienceandtechnology,todrivetherequirementshavebeenincreased,particularlyintheareaofheavyandsmallisparticularlyprominent.Atpresent,thegearusedinthedesignofainvolutesline,andcycloidarctoothprofilethreeofthem,involutesgearduetomanufacturingsimpledeviationfromtheCentrenotsensitivetotheadvantagesofwidelyused,butitbearerLessandlessforheavytransmissioncyclonicalgearcontactstresssmall,toothprofileofthecoincidenceoflargeandisconducivetotheimprovementofbendingstrength,butthemeshingofgearsprecisionmanufacturingandassemblyhigherlastcentury1950sthearcgearbendingstrengthisnothigh,inordertoachievecontinuouscontacttobemadegenerallyhelicalgears,andsmallmanufacturersintheareahavebeengreatlyrestricted.Inordertoincreasethecarryingcapacityofgears,theresearchersputforwardanumberofnewtoothprofile,forexamplemicrosegmentgearprofile,dualbandinvolutesgear,thegearincreasetheintensitycouldplayarole,butthesenewteethProfileinthemanufacturingorassemblyareastherearestillcertaindeficiencies.Thisdeviationfromtheconceptoffunction,anewtypeofgeargearchangearc.Thepaperintroducedthearcgearchangetheformationofprinciple,derivedToothformula,discussedthechangingarcofthegearisgiventoothprofileexamples.1Avariablearctoothprofileofaprinciple1.1VariablearctoothprofileofaprincipleBelowD.C.H.YangaccordingtoAmericanscholars,suchasthedeviationfunctionDF,variablearctoothprofileontheformationofprinciple.P1isaradiusofacircleofthegearsection,θ1forthecornertoeθ1radius,evenlydistributedinthecenterofaround,paintedaseriesofround,asshowninFigure1hereforeθ1θ10rCOS2θ1Wheneθ1boundtomeetcertainconditions,thisseriesofroundenvelopecantosmooththetoothprofileg1θ1,canbeseenfromthemap,e1θ1||Pθ1gθ1||,saideθ1forthedeviationfunctionandwewillmeettheaboveprincipleofformationofatoothprofilecollectivelyreferredtoasvariableenvelopearctoothprofile,referredtoasvariablearctoothprofile,ItconstitutesachangeofgearknownastheArcgear.Whenthedeviationfromfunctione(θ1)r1cosα(θ),thechangeisthecommonarctoothprofileoftheinvolutestoothprofile,andwhenthedeviationfunctionfor2sin210101rrreThenchangedthearctoothprofileCycloidisthetoothprofile,andthegeneralarcgear,theequivalentofdeviationfunctioneθ1onlyincertaindiscretepointsvalue.1.2arctoothprofilechangethecalculationCanbeseenfromFigure2,thecomponentthatcoordinateswiththegearchangearctoothprofileoftheequationforP1coscos1111ergx1sinsin1111ergy2In,ψdefinedasthepointgtoothprofileofthenormallinewiththeanglebetweenthexaxis,whichisafunctionofθ1fromFigure2that1ee11rLtan2211erebacbacoaooao111112/01(3)Inordertogetthetoothprofiletothepracticalapplication,thedeviationmustalsofunctioneθ1thechoicetodocertainrestrictions1Toensurethetoothprofileofnoncrossingto|cos|11re(4)2Toensurethatequation3Solutionfor212re(5)3ToensurethecontourofCcontinuous,inthesectionwitharoundp1Toothg1attheintersectionofCp,ecpmustbezero.4ToensureToothfairing,ineθ1minimum,betweenthemaximumchangemustbemonotonous.5InordertogearteethN1forintegerandensuringthatacertainoverlapfactorμ,themeetingpointbetweenthepointofviewoftheΦ1shouldmeet.11n2gearchangearctoothprofileoftheengagementprincipleForachangeofgeararctoothprofileofmutualengagement,asshowninFigure3,inoneinstant,thisconjugategear1oand2osTooth1cand2cgpointinthemesh,accordingtotoothprofileengagementprinciple,Conjugatetoothprofileequationcanbewrittencoscos1111ergx(6)sinsin1111ergy(7)tan2211111ere2/1(8)coscos2222ergx(9)sinsin2222ergy(10)

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