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《基于球桿儀的高速五軸數(shù)控機床綜合誤差建模與檢測方法》由會員上傳分享，免費在線閱讀，更多相關內容在學術論文-天天文庫。
1、天津人學博十學位論文基于球桿儀的高速五軸數(shù)控機床綜合誤差建模與檢測方法TheDBB-BasedErrorsModelingandMeasurem．entMethodfor5-axisHighSpeedCNCMachineTools一級學科：機械工程學科專業(yè)：機械制造及其自動化研究生：商鵬導師：張大衛(wèi)教授天津大學機械工程學院二OO八年五月天津大學博士學位論文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天津大學博士學位論文Onalltheanalysismentionedabove．Theoutcomeofthisresearchhadhi
