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《基于球桿儀的高速五軸數(shù)控機(jī)床綜合誤差建模與檢測(cè)方法》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、天津人學(xué)博十學(xué)位論文基于球桿儀的高速五軸數(shù)控機(jī)床綜合誤差建模與檢測(cè)方法TheDBB-BasedErrorsModelingandMeasurem．entMethodfor5-axisHighSpeedCNCMachineTools一級(jí)學(xué)科：機(jī)械工程學(xué)科專(zhuān)業(yè)：機(jī)械制造及其自動(dòng)化研究生：商鵬導(dǎo)師：張大衛(wèi)教授天津大學(xué)機(jī)械工程學(xué)院二OO八年五月天津大學(xué)博士學(xué)位論文ABSTRACTTllispaperaimedatthemeasurmentofthemainerrorsofthe5-axishighspeedmachinetools，andfousedonthekeyproblemsconc
2、emdforthemeasurementmethodsoftheerrorsofrotaryaxis，thethermalerrorsofhighspeedspindleandlinearmotorsystems．Thispaperbasedondouble—ball·bar(DBB)theoryandfoundthemathematicmodelincludingmaingeometricalerrorsandthermalerrorsofthe5-axismachinetools；andthermal—structurecouplinganalysisforhighspindl
3、eandlinearmotorsystemswasdone．FiveDBBmeasurementmodelsweredesignedfordifferenterrors．Lastly,theexperimentsofDBBfor5-axismachinetoolsweredone．Thefollowingin-depthworkhadbeencompleted．Thesynthesiserrormodelofhighspeed5-axismachinetoolswasfoundedbasedonhomogeneouscoordinatetransformationtheory,in
4、cluded4geometricalerrorsofC-aixs，thermaldrifterrorsofhighspeedspindleandgeometricalandthermalerrorsoflinearmotorsystems，thentheDBBmeasurementmethodwasfoundedaccordingtotheerrormodel．TheFEAanalysisforwholemachinetools．highspeedspindleandlinearguidewasdonebyANSYS，thetemperaturefieldofmachinetool
5、s，thethermaldistortionofspindleandlinearguideweregot，byapplyingthermalandstructuralloadsontheFEAmodels．ThemeasurementmodelsofDBBwasfoundedanddifferenttrajectoriesofDBBfordifferenterrorsweresimulated，including4geometricalerrorsofC-aixs，thermaldrifterrorsofhi【ghspeedspindleandgeometricalandtherm
6、alerrorsoflinearmotorsystems．111emethodforseparatingthegeometricalandthermalerrorsfromDBBdatawasproposedbasedontheclosedcharacteristicofthekinematicalchainof5-axismachinetools，thelocationerrorsofDBBcouldalsobeseparatedbyusingleastsquaremethod．Atlast，thevariationcul'vesofspindlethermaldriftinge
7、rrorsandthermalerrrorsoflinearguideweredrawn,andthedistributionontheworktablesurfaceofsynthesiserrorswerealsodrawn,thentheaccuracyofthemachinetoolswasevaluatedbasedJl天津大學(xué)博士學(xué)位論文Onalltheanalysismentionedabove．Theoutcomeofthisresearchhadhi
