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1、重庆大学硕士学位论文II英文摘要ABSTRACTAtpresent,ourcountryisvigorouslypromotingthedevelopmentofadvancedaeroenginemanufactureandaeroblademanufactureactsasaveryimportantpartinthatfield.Thegrindingprocessofaerobladehasgraduallyabandonedthemanualprocessing,whichisinalowefficiencyandvaryquality,andrapidlydeve
2、lopedtothemultiaxisCNCmachiningmode.Theaero-enginebladeisakindoftypicaldifficulttomachiningfreesurfaceworkpieceanditsmaterialmainlyuseshigh-temperatureortitaniumalloy.Thetraditionalprocessingmethodhasalowprocessingefficiencyandaccuracy,easytoburn,undercutorovercut,byusingthe7axisCNCabrasive
3、beltgrindingprocessandequipmentmentionedbythispaper,thoseproblemscanbesolved.Inaddition,thereasonableNCprogramisalsoanimportantfactortoensurethemachiningquality.Duetotheprocessmethodofaero-enginebladeisconfidentialallovertheworld,itisnecessarytodevelopaautomaticprogrammingsystemforspecialgr
4、indingmachine.Thespecificprogrammingmethodisinfluencedbythemachinetool’sstructure,processingcharacteristics,blade’smodelandetc.Thispaperintentstoconductnecessaryexplosiononthemachiningobject’scharacteristics,processanddevice,afterthat,basingonUGsecondarydevelopmentandC++,aabrasivebeltgrindi
5、ngautomaticprogrammingsystemwithgoodapplicabilityandhighprecisionismade.Themaincontentsofthispaperareasfollows:①Withdiscussiononaero-engineblade’sshape,itsstructure’sprocessingdifficultyisclear.Takinghigh-temperaturenickelbasedalloyasanexample,theprocesscharacteristics,reasonableprocessingp
6、arametersandgrindingburnduringbladematerial’sabrasivebeltgrindingarediscussed,whichlaysafoundationfortheNCmachiningandselectingreasonableprogrammingparameters.②Withaero-engineblade’sCADmodel,thecalculationmethodofgrindingtoolpathparametersandtoolpathplanningareelaborated,what’smore,theconve
7、rsationofpositionparameterstoNCprogramisrealizedwithapplicationofD-Hmethod.Byusingfiniteelementmethodandnumericalsimulation,theelasticdeformation’spredictionandcompensationcanbeachieved.Thoughtheaxialpressurecontrolmethodcombiningwiththestructureoffloati
