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带轮Pulley圆弧齿同步带轮轮齿ArctoothTimingtooth型号Type节距pb齿槽深hg齿槽圆弧半径R齿顶圆半角r1齿槽宽s两倍节顶距2δ齿形角3M31.280.910.26~0.351.900.762≈14°5M52.161.560.48~0.523.251.144≈14°8M83.542.570.78~0.845.351.372≈14°14M146.204.651.36~1.509.802.794≈14°20M208.606.841.95~2.2514.804.320≈14°直边齿廓尺寸Dimensionoflineartypepulley型号TypeMXLXXLXLLHXHXXH齿槽底宽bw0.84±0.051.14±0.051.32±0.053.05±0.104.19±0.137.90±0.1512.17±0.180000000齿槽深hg0.69-0.050.84-0.051.65-0.082.67-0.103.05-0.137.14-0.1310.31-0.13齿槽半角Φ+1.5°20252520202020齿根圆角半径rb0.350.350.411.191.601.983.96+0.05+0.05+0.05+0.13+0.13+0.13+0.13齿顶圆角半径rt0.1300.3000.6401.1701.6002.3903.180两倍节顶距2β0.5080.5080.5080.7621.3722.7943.0481、同步带轮的型式PulleyTypes2、齿型尺寸、公差及技术参数Dimension,Tolerances&TechnicalParameters3、各种型号同步带轮齿面宽度尺寸表DimensionofPulleyToothFlankWidth4、订购须知OrderAttention圆弧齿轮传动类型：1)圆弧圆柱齿轮分单圆弧齿轮和双圆弧齿轮。2)单圆弧齿轮的接触线强度比同等条件下渐开线齿轮高，但弯曲强度比渐开线低。3)圆弧齿轮主要采用软齿面或中硬齿面，采用硬齿面时一般用矮形齿。圆弧齿轮传动设计步骤：1)简化设计：根据齿轮传动的传动功率、输入转速、传动比等条件，确定中心距、模数等主要参数。如果中心距、模数已知，可跳过这一步。2)几何设计计算：设计和计算齿轮的基本参数，并进行几何尺寸计算。3)强度校核：在基本参数确定后，进行精确的齿面接触强度和齿根弯曲强度校核。4)如果校核不满足强度要求，可以返回圆弧齿轮传动的特点：1)圆弧齿轮传动试点啮合传动，值适用于斜齿轮，不能用于直齿轮。2)相对曲率半径比渐开线大，接触强度比渐开线高。3)对中心距变动的敏感性比渐开线大。加工时，对切齿深度要求较高，不允许径向变位1,thetypeofsynchronousbeltround2,tooth-size,toleranceandtechnicalparameters3,variousmodelsofsynchronousbelttoothsurfacewidthsizetable4,orderingnotesArcGeartypes:1)single-cylindergearcirculararcgearanddoublearcgear.2)single-arcgearcontactlineintensityratiounderthesameconditionsinvolutegear,butbendingstrengththaninvolutelinelow.3)arcgearusedmainlyinthesoftorhardenedtoothsurface,whichtendstobeusedwhenusingHardeneddwarfgear.Arcgeardrivedesignsteps:1)simplifythedesign:Accordingtothetransmissiongeartransmissionpower,inputspeed,transmissionratioandotherconditionstodeterminecenterdistance,modulus,andotherkeyparameters.Ifthecenterdistancemodulusknown,canskipthisstep.2)calculatethegeometricdesign:designandthebasicparametersofgear,andgeometrycalculation.3)StrengthCheck:Thebasicparametersestablished,theprecisetoothcontactstrengthandflexuralstrengthtoothrootcheck.4)Checkiftherequirementsarenotsatisfiedwithintensity,canbereturned切削，并严格控制装配误差。单圆弧齿轮传动小齿轮的凸齿工作齿廓在节圆以外，齿廓圆心在节圆上；大齿轮的凹齿工作齿廓在节圆内﹐齿廓圆心略偏於节圆以外(图2单圆弧齿轮传动的嚙合情况)。由於大齿轮的齿廓圆弧半径p2略大於小齿轮的齿廓半径p1﹐故当两齿廓转到K点﹐其公法线通过节点c时﹐齿便接触﹐旋即分离﹐但与它相邻的另一端面的齿廓随即接触﹐即两轮齿K1﹑K'1﹐K2﹑K'2﹑K3﹑K'3……各点依次沿嚙合线接触。因此﹐圆弧齿轮任一端面上凹﹑凸齿廓仅作瞬时嚙合。一对新圆弧齿轮在理论上是瞬时点嚙合﹐故圆弧齿轮传动又常称为圆弧点嚙合齿轮传动。轮齿经过磨合后﹐实际上齿廓能沿齿高有相当长的一段线接触。圆弧齿轮传动的特点是﹕(1)综合曲率半径比渐开线齿轮传动大很多﹐其接触强度比渐开线齿轮传动约高0.5～1.5倍﹔(2)两轮齿沿嚙合线方向的滚动速度很大﹐齿面间易於形成油膜﹐传动效率较高﹐一般可达0.99～0.995﹔(3)圆弧齿轮沿齿高方向磨损均匀﹐且容易跑合﹔(4)圆弧齿轮无根切现象﹐故最小齿数可以少。但圆弧齿轮对中心距﹑切齿深度和螺旋角的误差敏感性很大﹐这三项误差对承载能力影响较大﹐故圆弧齿轮对製造和安装精度要求较高。此外，单圆弧齿轮轮齿弯曲强度较弱﹔切削同一模数的大、小齿轮，需用两把不同的滚刀。双圆弧齿轮传动工作时，从一个端面看，先是主动轮齿的凹部推动从动轮齿的凸部，离开后，再以它的凸部推动对方的凹部，故双圆弧齿轮传动在理论上同时有两个接触点，经跑合后，这种传动实际上有两条接触线，因此可以实现多对齿和多点嚙合。此外，由於其齿根厚度较大，双圆弧齿轮传动不仅承载能力比单圆弧齿轮传动约高30％以上，而且传动较平稳，振动和噪声较小，并且可用同一把滚刀加工相配对的两个齿轮。因此。高速重载时，双圆弧齿轮传动有取代单圆弧齿轮传动的趋向。Arcgeartransmissioncharacteristics:1)pilotarcGearmeshingtransmission,valueapplicabletohelicalgear,thegearcannotbeuseddirectly.2)relativeradiusofcurvaturethaninvoluteline,contactinvolutelineintensitythanhigh.3)changesinthecenterdistancethanthesensitivityoftheinvolute.Processing,Cuttingdepthrequirementsforhigherradialdisplacementdoesnotallowcuttingandcarefulcontrolofassemblyerror.SinglearcGearThesmallconvextoothgeartoothprofileworkoutsideinthecircularsection,toothprofileinthecenterofcircle;largeconcavetoothgeartoothprofileworkintheFestivalCircle,Center略偏inthetoothprofileoutsidethecirclesection(Figure2singlearcGearTransmissionmeshing).Duetothelargegeartoothprofilearcradiusp2slightlylargerthanthesmallgeartoothprofileradiusp1,sowhentwoKtoothprofiletothepoint,itsnormallinethroughthenodec,thetoothwillcontactimmediatelyseparated,butitistheotherendothetoothprofileimmediatelycontacted,ortwoteethK1﹑K'1,K2﹑K'2﹑K3﹑K'3……pointsfollowedalongthelinecontactmeshing.Therefore,thearcgear﹑concavesurfaceoftheconvexsidetoothprofileonlyforinstantaneousmeshing.Anewcirculargearinmeshingtheoryisinstantaneouspoint,itArcGearalsooftencalledpointarcmeshinggeartransmission.Afterrunning-geartoothaftertoothprofilecanactuallyhighgearalongwitharatherlongperiodofexposure.ArcGearischaracterizedby:(1)comprehensivethantheradiusofcurvatureofinvolutegeartransmissionlinemuchbiggerthanthestrengthofitscontactsinvolutegeartransmissionlineofabout0.5to1.5times(2)twoteethmeshinglinealongthedirectionrollinggreatspeed,easyformoftoothsurfaceoilfilm,transmissionmoreefficient,usuallyrangingfrom0.99to0.995(3)archighgeartoothdirectionalongwearuniform,andeasyrunning-in(4)arccuttinggearrootlessthephenomenon,itcouldbethesmallestnumberofteethless.ButfromthearcoftheCenter﹑GearCuttinghelixangleanddepthofthegreatsensitivityoferror,thethreeerrorsonagreaterimpactoncarryingcapacity,soarcgearonthemanufactureandinstallationofhighaccuracyrequirements.Inaddition,single-arcGearbendingstrength,relativelylowmodulusofthesamecuttinglargeandsmallgear,preparingtwodifferenthob.（返回Back）同步带轮的型式PulleyTypesAS型TypeBS型TypeAF型TypeBF型TypeW型Type（返回Back）齿型尺寸、公差及技术参数Dimension,Tolerance&TechnicalParameters齿轮直边齿形尺寸和公差Dimens