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1、GearGear(Gear)isrelyingonthetoothmeshingtorquerotavirusmechanicalparts.Gearwithotherdentatemachineryparts,suchasawormgear,rack,transmission,whichcanrealizechangedthedirectionofrotationspeedandtorque,changethedirectionofmovementandchangethemovementfor
2、ms,andotherfunctions.Owingtothehightransmissionefficiency,accurateandadvantagesoflargerangeofpowertransmissionratio,gearmechanismiswidelyusedinindustrialproducts,thedesignandmanufactureleveldirectlyaffectsthequalityofindustrialproducts.Geartoothbuckl
3、eeachgearwilldrivetheothergearstotransmitpower.Separatetwogears,chainscanalsobeapplied,caterpillar,onbothsidesofthebelttodrivegearandtransmissionpower.Basicintroduction.Intheapplicationoftransmissiongearappearedverycarly.MorcthanthreehundredyearsBC,t
4、heancientGreekphilosopherAristotleinthemechanicalproblems,itexpoundsthebronzeorirongeartransmissionproblemofrotarymotion.InventedinancientChina,hasbeenappliedintheentiregeartrain.However,theancientgearismadeofwoodormetalmoulds,canonlytransferbetweens
5、haftrotarymotion,cannotguaranteethestabilityoftransmission,thebearingcapacityofthegeararcalsosmall.Accordingtohistoricalrecords,in400〜200BCinancientChinahasalreadystartedtousegear,shanxiunearthedbronzegearsinourcountryisbyfartheoldestgearhadbeenfound
6、,asareflectionofancientscienceandtechnologyachievementsofthisworkistogearmechanismasthecoremechanism.The17thcentury,peoplestartedtoresearch,canbedeliveredrighttoothshapeofthemovement.The18thcentury,Europeaftertheindustrialrevolution,theapplicationofg
7、eartransmissionisincreasingdaybydaywidcly;Firstthedevelopmentofcycloidalgear,thentheinvolutegear,untilthebeginningofthe20thcentury,involutegearhassetupafileintheapplication.Asearlyasin1694,FrenchscholarPhilippeDeLaHireforwardinvolutetoothshapecurveca
8、nbeusedasinthefirstplace.In1733,theFrenchM.Camusputforwardthecommonnormaloftoothcontactmustbeonthecenterofthenode.Aauxiliaryinstantaneouscenterlinerespectivelyalongthebigwheelandlittlewheeloftheinstantaneouscenterline(pitch)forpurerolling,andtheauxil
