外文翻译--数控加工技术概述.doc

1Thedigitalcontrolprocesstechnologyissammarized1.digitalcontrolprogrammingreachessuchdevelopmentThedigitalcontrolprogrammingisthesegmentthatbeabletoobviouslybringintoplaythebeneficialresultinatthemomentCAD/CAPP/CAMssystemthemostmost,suchislivingtoachievetodesigntheprocessautomationandraiseprocessaccuracyandprocessesthequalityandcutsdowntheproductdevelopmentcycleandsoontherespectisbriningintoplaythesignificantaction.Beinglivingpossessthegreatsquantityapplicationssuchasaviationindustryandautoindustryandsoonterritorys.Sincegivingbirthtotheintensedemandofpractice,wide-rangingresearchhaswhollybeencarriedontothedigitalcontrolprogrammingtechniqueinthehomeandabroad,andacquirestheplentifulandsubstantialfruit.Thenextreachessuchtothedigitalcontrolprogramminganddevelopstoactassometointroduce.1.1basicconceptofdigitalcontrolprogrammingThedigitalcontrolprogrammingisthroughthesparepartsdrawingsupthefullprocessthatobtainsthedigitalcontrolprocessingprogram.Itsmainmissionisthattheswordspot(CutterlocationpointabbreviateCLsspot)intheswordisprocessedawayinthecalculation.Thepointofintersectionthatswordthespotwasoridinarilygettothecuttingtoolaxiallineagainstthecuttingtoolfacestillwillbegiveouttheswordshaftvectorinmuchprocesss1.2digitalcontrolprogrammingtechniquedevelopmentsurveyMITdesignedonekindofspeciallanguagethatisusedintheinflexiblesparepartsdigitalcontrolprocessingprogramestablishmentstotheprogramprobleminordertoresolveinthedigitalcontrolprocess,andiscalledAPT(AutomaticallyProgrammedTool)inthe50s.2Well-developededitionssuchasafterAPTtimeandagaindevelops,takeedshapesuchasAPTIIandAPTIII(thestereoscopiccuttingactionisemployd)andAPT(thealgorithmimproves,addmuchcoordinatessurfaceprocessestheprogrammingmeritorousservicecapacity)andAPTAC(Advancedcontouring)(addcutsthedatabaseadministrationsystem)andAPT/SS(SculpturedSurface)(addengravesthecamberprocessestheprogrammingmeritorousservicecapacity)andsoon.AdopingAPTlanguagedrawingupdigitalcontrolordertohaveeasytherefineingoforder,andgosawaythestrongspointsuchasswordcontrolisagileandsoon,andcausesthedigitalcontrolprocesstheprogramming,andmovesupwardupyetpossessmuchnotsuitablepointstogeometryelement.APTthroughassemblelanguagegradetothemachinetoolorder:Adopinglanguagedefinitionsparepartsgeometryformshape,andisdifficulttodepictcomplexgeometryformshape,andlackaudio-visualqualityofgeometry；Thecertificationmeasurethatthefigureaudio-visualthatisshortoftosparepartsformshapeandthecuttingtoolmovementlocusdisplaysandthecuttingtoollocus；BeingdifficulttoeffectivelyjoinwithCADsdatabankandCAPPssystem；Nottoactaseasilyupthehighautomation,theintegrationizationInviewoftheAPTslanguagedefect,in1978,Franceattainedthesystemthatthelargeropeairplanecorporationstartsdevelopmentgathersassemblethreedimensionsdesign,analysisandNCsprocessintegration,andiscalledintheinterestofCATIA.HavingariseedalikelythesystemssuchasEUCLIDandNPU/GNCPandsoonsoonafterwardsveryquickly,thegeometrymoldswhollyvalidsettlementsofthesesystemsandthesparepartsgeometry3formshapedisplayisdesignedmutuallyandmendsgeneratesthecuttingtoollocus,andtheproblemssuchastheimitationtogoawaytheswordprocessdisplaysandcertificationandsoonpromoteedCADandCAMdevelopingtotheintegrationorientation.Theapproximatelyideathatsystem(CIMS)andparallelproject(CE)wasmanufactureinthecalculatingmachineintegrationtakeshapeupthe80sgraduallyonthebasethattheCAD/CAMsintegrationbeinglivingisapproximatelyattendschool.Atthemoment,andthenecessariesthatCEdevelopedinordertoadapttoCIMS,thedigitalcontrolprogrammingsystemtointegrationizationandintelligentizationthedevelopment.Beinglivingtheintegrationrespect,withthedevelopmentaccordswiththeSTEP(StandardfortheExchangeofProductModelData)criterionparameterizationfeaturemoldmakingandsystematicallygivespriorityto,havingcarriedonthehighlyeffectiveworkofgreatsquantityatthemomentisthehomeandabroaddevelopmentheatpointBeinglivingtheintelligentizationrespect,theworkhasstartonlyashortwhileago,andstillawaitsthatweleavehard2、NCscuttingtoollocusgeneratesthemethodstudydevelopingactualityDigitalcontrolprogrammingcoreworkisgenerateingthecuttingtoollocus,afterwardsbysuchscatteredone-tenthswordspot,placesthatthehandlecomesintobeingthedigitalcontrolprocessingprogramafterwardsviaing.Thenextcuttingtoollocuscomesintobeingthemeansandactesassomeandintroduce2.1basedingonalittleandstring,surfaceandpartofthebodyNCsswordtrackformationmeansCADstechniquemovesthroughthetwodimensionmapping,andudergothethreedimensionswiresframeandcamberandthesolid4modellinggeneration,nowtheparameterizationfeaturereacingisalwaysmoldded.Islivingtwodimensionmappingtogetherwiththreedimensionswiresframephase,incasetheopeningprocesses,theroughsketchisprocessedthedigitalcontrolprocessismainwithspotandstringactasdrivetarget,theplaneareaprocessandsoon.Thiskindoflevelthatpersonnelstaffwasrequireedmanipulatingintheprocessistaller,complexmutually.Beinglivingcamberandthesolidmodellinggeneration,entityprocesshadariseedtobasedon.Theentityprocesstargetisanentity(oridinarilyblendesforCSGandBREPexpress),its(moreover,intersects,fallsshortoftooperate)butgetyieldthroughsomefundamentalpartsofthebodyhabituallyafterthesetoperation.Theentityisprocessednotmerelyusableroughmachiningandsemiprecisionworktothespareparts,andthegreatareacutsYuLiang,andtheeffectivenessisprocessedintheraise,butalsousableresearchtogetherwithdevelopmenttodigitalcontrolbasedingonthefeatureprogrammingsystem,isthefeatureprocessbaseEntityprocessoridinarilypossessentityroughsketchprocessandtheentityareaandprocessestwokinds.Theentityprocessrealizationmeanssliceslaw(SLICE)intheinterestofthestraturm,inimmediatefutureslicesbytheprocessentityinthewayofoneserie