圓柱蝸桿斜齒輪傳動的理論分析及試驗研究.pdf

1、重慶大學碩士學位論文Y829813圓柱蝸桿斜齒輪傳動的理論分析及試驗研究⑧碩士研究生：劉舸指導教師：蘇代忠教授學科專業(yè)：機械設計及理論重慶大學機械工程學院二00四年十月蔓鏖查堂堡主蘭垡笙奎薹苧塑塞ABSTRACTThisresearchissupportedbytheNaturalScienceFoundationofChina(grantNo50175112)InvolutescylindricalWOrlUandwheeldrive

2、Canachieveabigdriveratio，andsmoothtransmissionhaslessnoise，anditCanalsobemadeselflockingwhennecessaryItsshortcomingsincludelargeslidingvelocityalongtoothtrace，leadingtolowdriveefficiency；poorlubricatecondition，andbigheat

3、generationduringthegeartoothengagementItneedshobboingcutterorspeciallymadecuttingtools，theprocessingcostoftheformerishi出，andthelatterhaslowprocessingefficiencyandpoorprocessingprecisionandbecausethegeometryoftoothprofile

4、shapeisverycomplex，thewormtoothflankcannotbegrinded，SOcarlnotreachhigherprecisionHowever，cylindricalhelicalgearCanadoptallbasicprocessingmethodsofgearshapeItnotonlysuitsalargequantityofproductionbutalsosuitsthesingleprod

5、uction；andtheflexibilityofgearproductionisverygood，anditCanreducethecostgreatlyThemanufactureofhelicagears，especiallyafters11rewdrollflureitsprecisionCanraisealotand，strengththehardnesslargelywiththewormhelicalgeardrive，

6、itCanavoidvariousshortcomingofthewheelprocessing，andmaintaintheadvantagesofthecylindricalhehealgears，suchasconvenientprocessing，shortcuthighefficiencyandSO0n，Anhence，itCanraiseproductionefficiencyandreduceproducecostgrea

7、廿yThisprojectistocarryouttheoreticalandexperimentalinvestigationforthewormhelicalgeardrive，togainthenecessaryknowledgeandunderstandingofitsmatmgcharacteristicsandperformanceInthetheoreticalaspectthefollowinghavebeenanaly

8、zed：themeshingprineipleofthewormhelicalgeardrive，lubricationconditionandthecorrectmeshingconditionthatuSehelicalgeartoreplacewormIntheexperimentalaspect，theworkcarriedoutincludesdesignandmadethemechanicaldrivetestingstan

9、d，andcomparisonofthemechanicaldriveefficiencyforworlnandwheeldriveandthewornlbelicalgeardrive，Theresultsrevealthatinsomecases，theefficiencyofhelicalgearisnotasgoodasthatofwormandwheeldrive；however，theefficiencyoftheworln

10、helicalgeardriveincertaintorqueandthescopeofrotationalspeediSstillmoreclosetothatofWOrlnandwheeldriveInordertoimprovetheefficiencyofthewornlhelicalgeardrive缸曲er’accordingtothetheoryofgeartoothprofilemodificationthegearto