數(shù)控現(xiàn)場銑床的建模與結構分析.pdf

1、蘭州理工大學碩士學位論文數(shù)控現(xiàn)場銑床的建模與結構分析姓名：李大明申請學位級別：碩士專業(yè)：測試計量技術及儀器指導教師：謝黎明20090425ABSTRACTCNCm訂lingmachineatthescenearedevicesusedinpetrochemicalprocessingequipmentatthescene，inordertoadapttheprocessingenVironmentofthescene，requiring

2、thesitemillingmachinetomeettheperformance、accuracy，suchasconditions，thequalityandsizeassmallaspossibleInpracticalapplicationsbecauseofthebeamsofdeformationcausedbyVibration，causewaVysurfacemarkshaveseriouslyaf詫ctedthemac

3、hiningaccuracyandsurfacequality，thepaperwithCOSMOSWorkstheFiniteE1ementsoftware，setuptheFiniteElementModelofmillingmachine，themachine’smainmobilecomponentsofstaticanddynamicanalvsis，basedontherelativedeformationofbeamvib

4、rationmodeshapeandamplitude，theimpactofmachiningaccuracyanalysisthemainfactorsforthestructuraloptimizationandprovideatheoreticalbasisfbrfhrtherimproVetheperformanceofjobsitemillingmachinehasVeryimportantsignincanceInthis

5、paper，atheoreticalanalysisofthebeamattheprocessingnodeofitsstaticanddynamicstifnlessoftheimpactofmachiningaccuracyandtheuseofFiniteElementAnalysismethods，theuseofCOSMOSWorkssoftwarecomponentsonthebeamdynamicandstaticstif

6、fhesssimulationSpecificallyinclude：1Onthebeamduringprocessingformechanicalanalysis，andtheoreticalanalysisonthebasicbeamdeformationfactorandtheuseofmillingforceformulatocalculatethebeamattheprocessingoffbrceinalldirection

7、s2Throughthemillingmachinestructuremodelingandanalysisofmechanicalpropertiesobtainedbeamsatlocationsbetweenthemaximumdeformationinthreedirectionsandfivebeamsvibrationbandsintrinsicmode，wecanseebycompanngtheZtothe1argesta

8、mountofdeformationsoastoarriVeatZtothestiffhessoftheweaker，analyzethereasonsfortheimpactofmachiningaccuracy，andthenrstordernaturalfrequencyofthelowdownZtothevibrationisalsolowertheperformanceofitsstiffness3Throughtheanal

9、ysisofbeamsonthebeamtooptimizethedesign，mechanicsofmaterialsbasedontheprincipleofbeamscorrespondingimproVementprogram，bychangingtheformofmethodssuchasribsenhancethestifmessofthebeams，thebeamsenhancethenaturalfrequencieso

10、fthenrstnvebands，andultimatelyreducetheZtothedeformationofbeams，reachingenhancemachiningprecisionmillingpurposesKeyWord：SceneMillngMachine；Beam；CoSMOSWorks；FiniteElementAnalysis；TheStructureofStaticandDynamicCharacterist