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时间:2018-02-10
《optimization of asymmetric spur gear drives to improve》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、ARTICLEINPRESSMechanismandMachineTheoryMechanismandMachineTheoryxxx(2007)xxx–xxxwww.elsevier.com/locate/mechmtOptimizationofasymmetricspurgeardrivestoimprovethebendingloadcapacityV.SenthilKumar,D.V.Muni,G.Muthuveerappan*IndianInstituteofTechnologyMadras,DepartmentofMech
2、anicalEngineering,Chennai,Tamilnadu600036,IndiaReceived10October2006;receivedinrevisedform30May2007;accepted27June2007AbstractInagivensizeofsymmetricinvolutegeardesignedthroughconventionalapproach,astheloadcarryingcapacityisrestrictedatthehigherpressureangleduetotipping
3、formation,theuseoftheasymmetrictoothedgeartoimprovethefilletcapacityinbendingisexaminedinthisstudy.Non-standardasymmetricrackcutterswithrequiredpressureanglesandmodulearedevelopedtogeneratetherequiredpinionandgearofadrivewithasymmetricinvolutesurfacesandtro-choidalfilletp
4、rofiles.Therespectiveprofilesthusgeneratedareoptimizedforbalancedfilletstressesthatareequalandpossiblythelowestalso.Forthisstudyofoptimization,severalnon-standardasymmetricrackcuttersaredesignedtoaccommodatedifferentcombinationsinthevaluesofpressureangle,toplandthicknessrat
5、io,profileshift,speedratioandtheasymmetricfactors.Howeverforanydrivewithagivencenterdistanceandaspeedratio,onlytwonon-standardasymmetricrackcutters,oneforthepinionandotherforthegearareusedtogeneratearequirednumbersofpinionandgearwithdifferentcuttershiftvaluesforthepurpose
6、ofoptimization.Theinfluenceoftheseparametersonthemaximumfilletstresshasbeenanalyzedtosuggesttheoptimumvaluesoftheseparametersthatimprovethefilletcapacityinbending.Theoptimizationoftheasymmetricspurgeardriveiscarriedoutusinganiterativeprocedureonthecalculatedmaximumfilletstr
7、essesthroughFEMfordifferentrackcuttershiftsandfinallytheoptimumvaluesofrackcuttershiftsaresuggestedforthegivencenterdistanceandthespeedratioofanasymmetricgeardrive.Comparisonshavealsobeenmadesuccess-fullywiththeresultsoftheAGMAandtheISOcodesforsymmetricgearstojustifythere
8、sultsofthefiniteelementmethodpertainingtothisstudy.Ó2007ElsevierLtd.Allrightsreserved.Keywords:Optimumdrive;Non
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