内容课件分析geartraxmanual

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Copyright1998-2013Camnetics,Inc.

GearTrax

Copyright1998-2013Camnetics,Inc.

GearTrax

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11

Introduction

ThefirstseatofGearTraxwassoldin1998.TheoriginalGearTraxwasprogrammedusingVisualBasicandislimitedto32bitcompiling.ThenewGearTraxisprogrammedusingVisualStudio.WehavetriedtoretaintheuserfriendlyinterfaceoftheoriginalGearTraxbutincorporatethethatweredevelopedforourGearTeqproduct.WhilemanyfeaturesofGearTeqarenowavailablewiththenewGearTrax,someoftheadvancedfeatureswillnotbeavailable,suchasprofilemodificationandcrowningandnetarygearsetstomentionafew.WeliketosaythenewGearTraxhasreceivedafaceliftandabraintransnt!

GearTraxisanobjectoriented/propertydrivengeardesignprogram.ItisnottheintentofGearTraxtoreceyourCADsystembuttoaugmenttheCADsystemwithauserinterfacethatwillallowthegeardesignertoaccura yvisualizethecomponentsbeforetheyaremodeledintheCADsystem.

GearTraxhasapredeterminednumberofcomponents.Forexample,thespurtabalwayshas2gears,apinionandagear.Forbevelgearsthisisimportantbecausebevelsarenormallydefinedasaset.Thenumberofteethinbothgearsdefinessuchpropertiesasthepitchangles.WhenGearTraxcreatesinCAD,theusercanselectbetweencreatingonlytheindividualmodelsorthemodelsandtheassembly.

GearTraxisprogrammedintheUSAusing100%renewableenergy.

Definitions:

CAD

CAD(Compu idedDesign)isthesystemthisprogramwascompiledtorunwith,eitherasanadd-inoradd-on.

Assembly

AnassemblyisanumberofpartscedinaCADassembly.Forgearsthatcanbecreatedasaset,GearTraxcancreatetheassemblyinCAD.

Component

ComponentisasingleGearTraxgear,sp,pulley,etc.

Part

PartisasingleCADpart filethatcontainsoneGearTraxcomponent.

Model

ModelisaCADpart .

Annotation

AnnotationisatextorExcelnotecedontheCADpartordrawing

.

StartingGearTrax

GearTraxiscompiledandpublishedasaClick-onceapplication.TohaveGearTraxavailableonacomputer,eachuserofthatcomputermustinstallGearTrax.UsetheWindowsStart tostartGearTraxbyclickingonStart>AllPrograms>Camnetics,Inc>GearTrax*.CommunicationwiththeCADprogramisdonethroughthecontrolsintheCADgroupboxoneachofthetabs.

GearTraxs

File

SaveGearTraxFile

SaveGearTraxFilesavestothe.gtxextension.

OpenGearTraxFile

OpenapreviouslysavedGearTrax.GearTraxshave.gtxasthefileextension.

CaptureGearTraxscreentotheclipboard

CaptureGearTraxscreentotheclipboardcapturestheGearTraxscreen,includingborders,totheclipboard.

ConvertLegacyGearTraxfile

ConvertLegacyGearTraxfileopensaGearTraxfilethatwassavedintheoriginalversionofGearTrax.Thelegacyfileextensionis.gtx.

Exit

ExitclosesGearTrax.Theuserispromptedtosaveanyunsaveddata.

View

Redraw-fitall

Redraw–fitallredrawstheassemblytofitonthescreenwiththefrontviewandresetsthedrivepositiontozero.

ShowLineofAction

ShowLineofAction,ifchecked,willdisythelineofactiononspurgearpairswithgearmates.

ShowOver/UnderPins

ShowOver/UnderPins,ifchecked,willdrawaredcirclebetweenapairofspurgearteeth.

DeviationChart

DeviationChartopensthedeviationchartwindow.This

itemisnormallydisabledunlesstheactivecomponentisaDINorANSIModulespline.TheshortcutkeyisF3.

IfGrade,Deviation,FitandTolerancesvaluesarechangedinthemainwindowthechartisupdatedimmedia y.

MoreData

Spur/Helical

ClassandTolerance itemopensawindowtoviewandadjusttheclassandtolerancesforthegears.

OperatingDiameters itemopensawindowtoviewtheoperatingdiametersofthegearset.

TopAdjustment itemopensawindowtoviewandadjustthetopadjustment.

TIFDiameters itemopensawindowtoviewthetrueinvoluteformdiameters.

ContactRatio itemopensawindowtoviewthecontactratioforthegearset.

Splines

MajorDiameters itemopensawindowtoviewandadjusttheclassandtolerancesforthesplines.

MinorDiameters itemopensawindowtoviewandadjusttheclassandtolerancesforthesplines.

SpaceWidth itemopensawindowtoviewandadjusttheclassandtolerancesforthesplines.

ToothThickness itemopensawindowtoviewandadjusttheclassandtolerancesforthesplines.

Tools

ReverseAnimationDirection

Clicking‘ReverseAnimationDirection’reversesthedirectionofthesimulation.

CreateaDataSheetforactivecomponent

Excelfile

Clicking‘Excelfile’createsadatasheetoftheactivecomponentinExcel,ifavailable.

Textfile

Clicking‘Textfile’createsadatasheetoftheactivecomponentinNotepad,ifavailable.

CommaSeparatedValues(CSV)file

Clicking‘CommaSeparatedValuesfile’createsadatasheetinNotepad,ifavailable,thatcanbeimportedintomostspreadsheetprograms.

Sampleofadatasheetcreatedastextfile

BalanceAddendumModification…

TheBalanceAddendumModification optionopensadialogwindowthatcanadjusttheaddendummodificationfortheactivegearanditsmate.Thematemustbeaspurgearwithagearmate.

Thechangeinaddendummodificationcoefficientcanbeautomaticallyestimated.Theaddendummodificationcoefficientsforthecurrentcomponentanditsmatingcomponentcanbebalancedbythefollowingformula:

x1=1/3*(1-1/u)+(x1+x2)/1+u

Inthisformula,uisthegearratiowhilex1andx2aretheaddendummodificationcoefficientsofthepinionandthegear,respectively.Thepinionisthegearwiththelessernumberofteeth.

Theusermaymanuallyentervaluesforthesumandindividualaddendummodificationcoefficients.Thescreenwillbeupdatedtoreflectthesechanges.

Thesliderbarmayalsobeusedtochangethedistributionofthemodification.

ClicktheCancelbuttontorestoretheoriginalvaluesandclosethewindow.

ClicktheAcceptbuttontousethevaluesandclosethewindow.

Standards

Standardsallowstheusertoconfigureuptothreedifferent standards.

DefineStandards

Selectoneofthethree standardstoloaditintothepropertygrid.Makeanychangestothestandardandthenusethecomponentselectortoswitchbacktoacomponent.

CoefficientAddendum

CoefficientAddendumdefinestheconstantthatisusedtocalculatethelengthoftheaddendum.

addendum=coefficientaddendum/diametralpitch(inches)

addendum=coefficientaddendum*module(millimeters)Validvaluesaregreaterthan0andlessthan2.

CoefficientClearance

CoefficientClearancedefinestheconstantthatisusedtocalculatethelengthoftheaddendum.

dedendum=(coefficientaddendum+coefficientclearance)

/diametralpitch(inches)

dedendum=(coefficientaddendum+coefficientclearance)

*module(millimeters)

Validvaluesaregreaterthanorequalto0andlessthanorequalto1.

CoefficientClearanceAdditional

CoefficientClearanceAdditionalisalineardimensionthatdefinestheamountofadditionallengthtobeaddedtothe

dedendum.Thisvaluedoesnottakeintoconsiderationtheunits(inchesormillimeters)ofthecomponent.

CoefficientFillet

CoefficientFilletdefinestheconstantthatisusedtocalculatethelengthoftheaddendum.

Thehobtipfilletradius=coefficientfillet/diametralpitch(inches)

Thehobtipfilletradius=coefficientfillet*module(millimeters)

Validvaluesaregreaterthan0andlessthanorequalto1.

PressureAngleNormal

PressureAngleNormaldefinesthepressureangleforthestandard.

BackupAll Standards

BackupAll Standardsallowstheusertobackupthestandardsinalocationthatwillnotbedestroyedwhen

removingorinstallinganewversionofGearTrax.Thiscsobeusedtostorethestandardssothatotheruserscanhaveaccesstothem.

RestoreorImport Standards

RestoreorImport Standardsallowstheusertorestorestandardsaf newinstallationofGearTraxorto

importthe standardsfromanotherlocation.

OpeninstallfolderusingExplorer

GearTraxiscompiledandpublishedasa"Click-once"application.Therefore,theinstallationfolderisnotintheprogramfolderasitisformostprograms.Theinstallationfoldercanbeopenedwiththiscommand.

Help

GearTraxHelpTopics

Clicking‘GearTraxHelpTopics’openstheGearTraxhelptopics.

GearTraxManual

Clicking‘GearTraxManual’opensaPDFofthemanual.AdobeAcrobatmustbeinstalledonthecomputer.

Registration...

Clicking‘Registration…’openstheRegistrationwindow.

AboutGearTrax...

Clicking‘AboutGearTrax…’openstheAboutwindow.Camneticsaddressesarelistedalongwithalinktothewebsite.TheversionofGearTraxthatisinstalledisdisyed.

Options

TheOptionssettingsareavailableontheGearTraxOptionstab.

GearTraxSettings

Decimalces

Decimalcesdeterminesthenumberofdecimalcesfromnormal.Thenormalsettingisx.xxxxforinchesandx.xxxformillimeters.Thisoptionwillnotchangethestandardoraddoneortwodecimalcestomostofthevaluesdisyedorpresentedinanydatasheets.Thismaynotaffectsomesettings.

DefaultUnits

DefaultUnitsdefinestheunits(inchesormillimeters)tobeusedwhencreatinganewGearTraxcomponent.ThisvalueissavedasadefaultforthenexttimeGearTraxisstarted.

InvolutePrecision

InvolutePrecisionallowstheusertohavesomecontroloverthenumberofpointsusedtocreatethesplinethatdefinestheinvoluteportionofthetooth.Thenumberofsplinepointswillbeaffectedbythenumberofteethinthegearandanyaddendummodification.The umnumberofpointsusedtocreatetheinvolutepersideis:

Low:10

Medium:20

High:40

VeryHigh:80

BevelGears

ToothCutLoftFactor,Inside

ToothCutLoftFactor,Insidedefineshowmuchlongertheloftshouldbetofacilitatethecompleoftingofthebeveltoothcuttowardtheapexpoint.Increasingthisvalueforwidefacewidthsmayhelpassurethatthetoothcutislongenough.

ToothCutLoftFactor,Outside

ToothCutLoftFactor,Outsidedefineshowmuchlongertheloftshouldbetofacilitatethecompleoftingofthebeveltoothcutoutwardfromthepitchdiameter.Increasethisvalueifchangestothebaserevolvemightincreasetheblankdiameterofthegear.

CADSettings

CADVersion

CADVersiondefineswhichversionofCADtousewithGearTraxwhenitisrunningasanAdd-On.ThisoptionisnotavailablewhenGearTraxisrunningasanAdd-In.ThisvalueissavedasadefaultforthenexttimeGearTraxisstarted.

ConstrainInvoluteSketch

TheConstrainInvoluteSketchcheckboxdeterminesiftheinvolutesketchwillbecreatedwithananchor(orfixed)constraint.Settingthistocheckedwillpreventunintendeddraggingofthesketchentitieswiththemouse.ThisvalueissavedasadefaultforthenexttimeGearTraxisstarted.

TemteFileforAssembly

TemteFileforAssemblydis ysthetemtefiletobeusedwhencreatinganewassembly inCAD.Thisisaread-

onlyvalue.SetthelocationandnameofthetemtefileintheGearTrax itemCAD>AssemblyTemteFile…ThisvalueissavedasadefaultforthenexttimeGearTraxisstarted.

TemteFileforComponent

TemteFileforComponentdis ysthetemtefiletobeusedwhencreatingane rt inCAD.Thisisaread-onlyvalue.Setthelocationandnameofthetem tefileintheGearTrax itemCAD>ComponentTem teFile…ThisvalueissavedasadefaultforthenexttimeGearTraxisstarted.

ToothCreation

TheToothCreationoptionallowstheusertoselectbetweensplinesandarcswhencreatingthetoothsketchgeometry.ThisvalueissavedasadefaultforthenexttimeGearTraxisstarted.

ExternalSplineSettings

ToothThickness

TheToothThicknesscomboboxgivestheuseramethoddeterminehowtocreatethetooththicknessofexternalsplineswhencreatingaCADmodel.ThisoptionissavedasadefaultforthenexttimeGearTraxisstarted.Theoptionsare:

UseAverageActualToothThickness

Use umActualToothThickness

UseMinimumActualToothThickness

.

MajorDiameter

TheMajorDiametercomboboxgivestheuseramethoddeterminehowtocreatethemajordiameterofexternalsplineswhencreatingaCADmodel.ThisoptionissavedasadefaultforthenexttimeGearTraxisstarted.Theoptionsare:

UseAverageMajorDiameter

Use umMajorDiameter

UseMinimumMajorDiameter

MinorDiameter

TheMinorDiametercomboboxgivestheuseramethodtodeterminehowtocreatetheminordiameterofexternalsplineswhencreatingaCADmodel.ThisoptionissavedasadefaultforthenexttimeGearTraxisstarted.Theoptionsare:

UseAverageMinorDiameter

Use umMinorDiameter

UseMinimumMinorDiameter

InternalSplineSettings

SpaceWidth

TheSpaceWidthcomboboxgivestheuseramethodtodeterminehowtocreatethetooththicknessofexternalsplineswhencreatingaCADmodel.ThisoptionissavedasadefaultforthenexttimeGearTraxisstarted.Theoptionsare:

UseAverageActualSpaceWidth

Use umActualSpaceWidth

UseMinimumActualSpaceWidth

.

MajorDiameter

TheMajorDiametercomboboxgivestheuseramethodtodeterminehowtocreatethemajordiameterofinternalsplineswhencreatingaCADmodel.ThisoptionissavedasadefaultforthenexttimeGearTraxisstarted.Theoptionsare:

UseAverageMajorDiameter

Use umMajorDiameter

UseMinimumMajorDiameter

MinorDiameter

TheMinorDiametercomboboxgivestheuseramethodtodeterminehowtocreatetheminordiameterofinternalsplineswhencreatingaCADmodel.ThisoptionissavedasadefaultforthenexttimeGearTraxisstarted.Theoptionsare:

UseAverageMinorDiameter

Use umMinorDiameter

UseMinimumMinorDiameter

Spur/Helical

Addendum

Addendumisthelengthofthetoothfromthepitchdiametertothemajordiameter.ThisvaluecannotbechangeddirectlyunlessGearTraxisinthe“Form”mode.

AddendumModification

AddendumModificationistheamountofaddendumchangeofamodifiedtooth.Thisvaluecanbepositiveornegative.Ifthesumofchangetoapairofgearsequalszerothenthereisnochangetothecenterdistance.

Apositivevaluewillincreasetheaddendumlengthandanegativevaluewilldecreasetheaddendumlength.

IfGearTraxisinthe“Form”mode,thevaluewillbeunused.

AddendumModificationCoefficient

AddendumModificationCoefficientistheratioofchangeofamodifiedtooth.Thisvaluecanbepositiveornegative.Ifthesumofchangetoapairofgearsequalszerothenthereisnochangetothecenterdistance.

Apositivevaluewillincreasetheaddendumlengthandanegativevaluewilldecreasetheaddendumlength.

IfGearTraxisinthe“Form”mode,thevaluewillbeunused.

AGMAClass

AGMAClasssetstheAGMAClassforthiscomponent.

Backlash

Backlashisthethinning(orthickening,ifanegativevalue)ofthetoothprofileaf nymodificationtothetoothform.Thisbacklashisachievedbyrackshiftanddoesnotaffectthediameters.SeeAddendumModificationfortooththinningorthickeningthatalsoaffectsthediameters.

BlankO.D.

BlankO.D.isthediameteroftheblankusedtocreatetheinternalgear.ThediametermustbelargeenoughforthetoothcutinCAD.

CircularPitch

CircularPitchisthearclengthofasinglepitchatthepitchdiameter.

Coefficient,Addendum

AddendumCoefficientisaconstantthatisdividedbythediametralpitchtodeterminethelengthoftheaddendumbeforeanymodification.Theaddendumlengthofa10diametral-pitchgearwithanaddendumcoefficientof0.8is0.080in.

Thewholedepthisequaltothesumoftwicetheaddendumcoefficientandtheclearancecoefficientdividedbythediametralpitch.

Coefficient,Clearance

ClearanceCoefficientisaconstantthatisdividedbythediametralpitchtodeterminetheclearanceintherootofthegeartooth.

Thewholedepthisequaltothesumoftheclearancecoefficientandtwicetheaddendumcoefficientdividedbythediametralpitch.

Coefficient,Fillet

FilletCoefficientisaconstantthatisdividedbythediametralpitchtodeterminetheradiusofthehobtipthatcreatesgeartoothroot.

ContactLength,Approach

ContactLength,Approachandtherecesslengthequalthetotalcontactforapairofgearteeth.Toviewtheseread-onlyvalues,clickonthesmallbuttonnexttotheAddendumModtextboxes.

ContactLength,Recess

ContactLength,Recessandtheapproachlengthequalthetotalcontactforapairofgearteeth.Toviewtheseread-onlyvalues,clickonthesmallbuttonnexttotheAddendumModtextboxes

ContactRatio

ContactRatioistheratioofthearcofactiontothecircularpitch.Thisvalueshouldbeover1.4toassureasmoothtransferofloadfromonepairofteethtothenextpairofteeth.Toviewtheseread-onlyvalues,clickonthesmallbuttonnexttotheAddendumModtextboxes

Crowning

CrowningisnotavailableinGearTraxbutitisavailableinourGearTeqproduct.Crowningistheal tiontothetooththicknessalongthelengthofthefacewidth.Thiscsobereferredtoasleadorlongitudinalcrowning.

Dedendum

Dedendumistheradiallengthofthetoothbetweenthepitchdiame ndtheminordiameter.

BaseDiameter

BaseDiameterisadiameterthatistangenttothepressureangle.Theinvolutecurvecannotbewithinthisdiameter.

MajorDiameter

MajorDiameteristheoutsidediameterofagear.

MinorDiameter

MinorDiameteristherootdiameterofagear.

PitchDiameter

PitchDiameteristhetheoreticaldiameterofthegear.Onafacegear,thisvaluedefinestheinnerdiameter.Theoutsidediameterofafacegearisthepitchdiameterplustwicethefacewidth.

PitchDiameter,Operating

PitchDiameter,Operatingisatheoreticaldiame twhichasetofgearsmeshes.Itnormallyequalsthepitchdiameterexceptwheneitherofthegearsismodifiedorthecenterdistancehasbeenmodified.Toviewtheseread-onlyvalues,clickonthesmallbuttonnexttothePitchDiametertextboxes.

TrueInvoluteFormDiameter

Thetrueinvoluteform(TIF)diameteristhesmallestdiameteroftheinvolutecurve.Toviewtheseread-onlyvalues,clickonthesmallbuttonnexttotheMinorDiametertextboxes.

GearType

GearTypedefinesthecomponentasanexternalgear,internalgearorrack.AfacegearoptionisavailableinourGearTeqproduct.

FaceGears

FacegearsarenotavailableinGearTraxbutisavailableinourGearTeqproduct.Facegearsaremorelikeacircularrackthananinternalorexternalspurgear.

Theshaftangleisalwaysat90degrees.

Thepinionandthefacegearaxisarealwaysco .

Thepitchdiameterofafacegearisattheinternaldiameteroftheteeth.

Theoutsidediameterofafacegearisequaltothepitchdiameterplustwicethefacewidth.

Backlashisalways0.000andcannotbechanged.

Theaddendummodificationisalways0.000andcannotbechanged.

ThePitchDepthofRackpropertycontrolsthedistancefromthepitchlinetothebackofthefacegear.

Leadorlongitudecrowningisnotavailableforfacegears.Addanycrowningtothepinion.

Facegearsaresometimescallcrowngearsbecausetheylooklikeaking'scrown.Butthisshouldnotbeconfusedwithgearsthathavetheirteeth"crowned".

FaceWidth

FaceWidthisthelengthofthetoothparalleltotheshaft.

FellowsStubDenominator

FellowsStubstandardisnotavailableinGearTraxbutisavailableinourGearTeqproduct.

TheFellowsStubDenominatorsetsthedenominatorfortheFellowsStubstandard.TheFellowsStubstandardmustbeselectedtochangethisvalue.Thisvaluemustbeequaltoorlessthanthediametralpitch

Theusermayspecifyanycombinationofnominator/denominatorfortheFollowsStubstandardaslongasthedenominatorisavaluegreaterthanthenominator.ThestandardratiosestablishedbytheFellowsGearShaperCo.are4/5,5/7,6/8,7/9,8/10,9/11,10/12and12/14.

FilletRadius

FilletRadiusdefinestheradiusonthetipofthecutter,whichformsatrochoidalcurvetangenttothetoothroot.

GearStandard

GearStandardsetstheAGMA,DIN,JIS,PGTorotherstandardsforthecomponent.Clickthesmallbuttontotherightofthedropdownboxtochangetolerancespecifications.

HelixAngle

HelixAngleistheangleofthetoothfromtheshaft.Azeroanglewouldbeparalleltotheshaftandwoulddefineaspurgear.Anangleotherthanzerowoulddefineahelicalgear.

HelixDirection

HelixDirectiondefinesthedirectionoftheangle.Theteethonalefthandhelicalgearonahorizontalsurfaceleantotheleft.

HobProtuberance

HobProtuberanceisnotavailableinGearTraxbutisavailableinourGearTeqproduct.

HobProtuberanceistheamountofundercuttingoftheinvolutesurfacecreatedbythehob.Thefilletremainsunchangedexceptforaslightincreaseinlength.

HPSTC(HighestPointofSingleToothContact)

HighestPointofSingleToothContactisthelargestdiameteronaspurgearatwhichasingletoothisincontactwiththematinggear.Toviewtheseread-onlyvalues,clickonthesmallbuttonnexttothePitchDiametertextboxes.

LPSTC(LowestPointofSingleToothContact)

LowestPointofSingleToothContactisthesmallestdiameteronaspurgearatwhichasingletoothisincontactwiththematinggear.Toviewtheseread-onlyvalues,clickonthesmallbuttonnexttothePitchDiametertextboxes.

FullFilletRadius

Somestandardsallowforafullfilletradiusoption.IfFullFilletRadiusisuncheckedthenthestandardhobbingmanufacturingmethodwillbeusedtogeneratethetoothform.Standardsthatdonotallowthisoptionwillignorethischeckbox.

ModificationProfile

ModificationProfileisnotavailableinGearTraxbutisavailableinourGearTeqproduct.

Module

Module(transverse)isusedinmetricsystemgears.Moduleequalsthenormalmoduledividedbythecosineofthehelicalangle.

ModuleNormal

ModuleNormalisusedinmetricsystemgearsandisnormaltothecutter.Module=25.4/diametralpitch.

NumberofTeeth

NumberofTeethdefinesthenumberofteethforeachcomponent.

P meter

PmeterdefinesthediameterofthepinsorwiresusedwithMeasurementofPins.Auserdefinedpmetermaybeentered.ToresetthevaluetothestandardvalueclicktheResetbuttonintheSpurInspectionwindow.

PitchDepthofRack

PitchDepthofRackisthedistancefromthepitchlinetothebackoftherack.Thisvalueisalsousedtodefinethedepthofafacegearfromthepitchlinetothebackofthegear.

DiametralPitch

DiametralPitchisusedinimperialsystemgears.Thisdefinesthediametralpitchinthetransversene.

DiametralPitch,Normal

DiametralPitch,Normalisusedinimperialsystemgearsandisnormaltothecutter.

PressureAngle

PressureAngleistheangleofthetoothatthepitchdiameter.Thisissometimesreferredtoasthetransversepressureangle.

PressureAngle,Normal

PressureAngle,Normalistheangleofthetoothatthepitchdiameternormaltothecutter.

SingleToothContact

Singletoothcontact.Toviewtheseread-onlyvalues,clickonthesmallbuttonnexttothePitchDiametertextboxes.

StartofActiveProfile

StartofActiveProfileisthediame twhichagearcomesintocontactwithitsmatinggear.Toviewtheseread-onlyvalues,clickonthesmallbuttonnexttothePitchDiametertextboxes.

ShrinkageRate

ShrinkageRateisnotavailableinGearTraxbutisavailableinourGearTeqproduct.

ShrinkageRatedefinestheshrinkagerateforsticgears.Thisisonlyusedwheninsertingatoothcutprofile.Thevalueenteredmustbelessthan0.0100(1%),0.0025=0.25%

ToothPatterninCAD

ToothPatterninCADselectsthenumberofteethtopatternwhencreatingthemodelinCAD.TheoptionsareAll,None,orFirst10.IfthisissettoAll,GearTraxwillcreateapatternthatcontainsalltheteeth.Thismightbeverytimeconsumingiftherearealargenumberofteethand/orthecomponentisahelicalgear.Ifthisissettonone,thenapatternwillnotbecreated.Setthisto‘First10’tocreateapatternwith10teeththatcaneasilybeexpandedintheCADsystem.

TestMasterGearPitchDiameter

Enterthepitchdiameterofthemastertestgear,ifavailable.Byitself,thisvaluehasnoeffectontheactualgeometryofthegear.Toenterorviewthisvalueclickontheinspectionbutton(pictureofacaliper).

TestRadius

Thetestradiusofthemastergearplusthetestradiusofthisgearequalsthesetupcenterdistanceforacompositeactiontest.Ifatestradiusforthemastergearhasbeenentered,GearTraxwillcalculatethetestradiusofthisgear.

Thetestradiuscsobeusedtocalculatethetooththicknessofagear.Ifatestdiameterforthemasterhasbeenenteredandatestradiusforthisgearisthenentered,GearTraxwillcalculatetheaddendummodificationcoefficientforthisgeartoachievethepropertooththicknessinconjunctionwiththeperfectmastergear.Theuserwillbepromptedtousethiscalculatedvalueornot.Toenterorviewthisvalueclickontheinspectionbutton(pictureofacaliper).

ToothThickness(Normal)

ToothThicknessisthearcthicknessofthetoothatthepitchdiameternormaltothecutter.

TopAdjustment

TopAdjustmentwillshortenthelengthoftheaddendumbythisvalueandthemajordiameterbytwicethisvalue.Thisvaluemustbeequaltoorgreaterthanzeroandlessthantheunadjustedaddendum.Toviewandeditthesevalues,clickonthesmallbuttonnexttotheMajorDiametertextboxes.

Units

Unitssetsthemeasurementunitsforthecomponent;selectInchesorMetric.

WholeDepth

WholeDepthisthedepthofthetooth(fromthemajordiametertotheminordiameter).

Thewholedepthisequaltothesumoftheclearancecoefficientandtwicetheaddendumcoefficientdividedbythediametralpitch.

SpurTolerances

ANSI/AGMA2000-A88

OpentheToleranceswindowbyclickingonthesmallbuttontotherightoftheGearStandardsdropdownselectionbox.

CodeToothThickness

AuserselectablebetweenA,B,CandD.

RadialRunout

PleaserefertoANSI/AGMA2000-A88standardforadetaileddescription.

PitchVariation

PleaserefertoANSI/AGMA2000-A88standardforadetaileddescription.

Profile

ProfileToleranceisthepermissibleamountofprofilevariationinthefunctionalprofile,designatedbyaspecified“K”chartenvelope.Plusmaterialatthetip,whichincreasestheamountofvariationoutsidethefunctionalprofile,isnotacceptable.Minusmaterialbeyondthestartoftipbreakcanbedisregarded.

ToothAlignment

ToothAlignmentToleranceisthepermissibleamountoftoothalignmentvariation,designatedbythespecified“K”chartenvelope.Tolerancevaluesinthisstandardarenormaltothetoothsurfa