高速高精度數(shù)控車床結(jié)構(gòu)動(dòng)力學(xué)特性與仿真技術(shù)研究.pdf

1、東南大學(xué)博士學(xué)位論文高速高精度數(shù)控車床結(jié)構(gòu)動(dòng)力學(xué)特性與仿真技術(shù)研究姓名：吳南星申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：機(jī)械制造及其自動(dòng)化指導(dǎo)教師：孫慶鴻20040801塑!!墜堅(jiān)STUDYoNSTRUCTURALDYNAMICSCHARACTERISTICSANDSIMULATIoNTECHNoLoGYOFNCLATHEWITHHIGH—SPEEDANDHIGHPRECISIONABSTRACTWiththerapiddevelopmentofthem

2、odernscience，technologyandproduction，manykindsofsmalldimension，shaftandpanrelolvingbodypartmadeofhighprecisionandhardness，lowroughnessandnonferrousmaterialsrequiresabrasivemachininginsteadoflatheworkoncethroughmachiningT

3、hisputsforwardhighrequirementtovelocityprecisionandrigidityofNClatheSoStodyingonthedynamiccharacteristicsofitsspindlesystemfeeddrivesystemandintegra2tmachinetoolisanimportantsubjectSupportedbyJiangsu』D14Five—YearPlangrea

4、tpublicbiddingitemsofhigh—speedandprecisionNClatheandNationNaturalScienceFundprojectofkeyCAEtechnicalresearchonmachinestructure西namicoptimizationandor增inalityinnovationdes／gn，keytechnologyofdynamiccharacteristicsofspindl

5、esystemfeeddrivesystemand吐leintegralNClathehadbeenstudiedAtthesaiTletimetheCKl416higllspeedNClathewithhighprecisionbycooperationwithNanjingNCmachinetoolcorporationhadbeendesignedanddevelopedTheCKl416NClathehasattainedtoa

6、dvancedlevelofinternationalstandardandownedautonomicknowledgepropertytightIndetail，theinnovationachievementsofthisthesisareastheforOWS：1Therigid—flexiblecoupledynamicmodelofthespindlesystemofCKl416NClathewithhighspeedand

7、highprecisionwasfoundedBasedontransfermatrixmethodofmulti—bodysystem，thespindlesystemofNClatheisinthestableandreliableworkingareaallthetimeduringopemfionbyanalysis，simulationandoptimization2Theeffectforpositioningerrorof

8、feeddrivesystemstiffnesswasanMyzedbasedonspringnlassmechanicalmodelThecorrespondingincreasedmethodofsystemstiffnesswaspresentedThismethodhasgoRenremarkableresultshipractice3Acollectivemathematicalmodelwasfoundedwhichcons

9、ideredmechanical—drivencomponentsoffeedsystemdriveelectricmotorandexecutecomponentsincludinggapandfrictionnonlinearfactorTheeffectsofnon—lineargapandnonlinearfrictionfordynamiccharacteristicwasemphaticallystudied，andadve

10、rseeffectsforfeeddrivesystemdynamiccharacteristicwererelievedthroughselfadjustingcontrolmethodongeneralizedminimumvarianceandfrictioncompensationmethodongeneticalgorithmThusthesystemresponsespeedandstaticMynamictrackinga

11、ccuracywereimproved4，ThevirtualprototypemodelofCKl416NClathewasfoundedbasedORdynamicstheoryofmultirigidbodysystemFutlhermole，thesimilaritytheoryandanalytichierarchyprocesswereappliedinvirtualprototypesystemceItificationT

12、hevisualplatformforlathedynamiccharacteristicstudyhadbeenprovided5Rigid—flexiblecouplemultibodydynamicmodelofNClatheWasfoundedbasedonfiniteelementmethodandflexiblemultibodysystemdynamicstheoryThemachinebodyflexibleeffect