空間四自由度全柔順并聯(lián)機構(gòu)精密定位平臺的剛度分析.pdf

1、分類號：密級：學號：6120100085單位代碼：10407碩士學位論文論文題目:空間四自由度全柔順并聯(lián)機構(gòu)空間四自由度全柔順并聯(lián)機構(gòu)精密定位精密定位平臺的平臺的剛度分析剛度分析研究方向柔順并聯(lián)機構(gòu)柔順并聯(lián)機構(gòu)專業(yè)名稱機械電子工程機械電子工程研究生姓名李培李培導師姓名、職稱朱大昌朱大昌副教授副教授2013年6月2日江西贛州IIAbstractWiththerapiddevelopmentofsciencetechnologythusth

2、eaccuracyofprecisionpositioningtechnologyareconstantlyimproved.Howtodesignahighprecisionmicropositioningplatfmbecomesaninevitabletrendofthedevelopmentofprecisionpositioningtechnology.Thestiffnessofthemicropositioningplat

3、fmisanimptantfactaffectingtheaccuracysoitiscriticaltomaketheanalysisonit.FirstTheprecisionpositioningplatfmwhicharemainlycomposedofawholecomplaintparallelmechanismaredesignedbasedonthetheyoftheparallelmechanismsthecompli

4、antmechanismsinthispaper.Secondlybasedontheprincipleofvirtualwkcellkiicequationamethodfsolvingthestaticstiffnessofawholecompliantparallelmechanismwasdesigned.Finallybytheanalysissoftwaretheresultofthedemwasverifiedthatgi

5、vestheproofofthecrectnessofthemethod.Themainwkofthepaperincludes:1.Threebodieselectedfromthethreecategies(3T1R2R2T3R1T)4DOFparallelmechanismareanalyzedaboutthemotionacteristicsbyscrewthey.2.Basedontheedparallelmechanism(

6、Model:4CRUtype2RPU2SPStype4RPURtype)throughtheflexiblehingereplacementmethodcompliantmechanismsotherrelatedknowledgethefullsuppleparallelmechanismaredesignedsoastobethemaincomponentsoftheprecisionpositioningplatfm.3.Appl

7、icationoffiniteelementanalysis，modelsof4CRUfullcomplaintparallelmechanism、2RPU2SPSfullcomplaintparallelmechanism4RPURfullcomplaintparallelmechanismaremadesimulatedbytheSolidwksANSYS.paredtothecrespondingexperimentalcalcu

8、lateddatathecrectnessthatusingfiniteelementmethodanalysistheoverallstiffnessofthefullcomplaintparallelmechanismisverified.Results:1.Itisprovedthatthedesignedmethodiscrect.2.Throughthecalculationoftheoverallstiffnessofthe

9、threecategiesfourDOFcompliantparallelmechanismareasonableresultcomesoutthatgivesthepointthatthemethodnotonlyadaptstoaspecialcasealsothegeneral.3.Thedesignofthecompliantparallelmechanismitsstiffnesscalculationexpthetypeof