圓柱蝸桿斜齒輪傳動(dòng)的理論分析及試驗(yàn)研究.pdf

1、重慶大學(xué)碩士學(xué)位論文Y829813圓柱蝸桿斜齒輪傳動(dòng)的理論分析及試驗(yàn)研究⑧碩士研究生：劉舸指導(dǎo)教師：蘇代忠教授學(xué)科專業(yè)：機(jī)械設(shè)計(jì)及理論重慶大學(xué)機(jī)械工程學(xué)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