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徐州工程学院毕业设计论文1翻译部分英文部分ADVANCEDMACHININGPROCESSESASTHEHARDWAREOFANADVANCEDTECHNOLOGYBECOMESMORECOMPLEX,NEWANDVISIONARYAPPROACHESTOTHEPROCESSINGOFMATERIALSINTOUSEFULPRODUCTSCOMEINTOCOMMONUSETHISHASBEENTHETRENDINMACHININGPROCESSESINRECENTYEARSADVANCEDMETHODSOFMACHINECONTROLASWELLASCOMPLETELYDIFFERENTMETHODSOFSHAPINGMATERIALSHAVEPERMITTEDTHEMECHANICALDESIGNERTOPROCEEDINDIRECTIONSTHATWOULDHAVEBEENTOTALLYIMPOSSIBLEONLYAFEWYEARSAGOPARALLELDEVELOPMENTINOTHERTECHNOLOGIESSUCHASELECTRONICSANDCOMPUTERSHAVEMADEAVAILABLETOTHEMACHINETOOLDESIGNERMETHODSANDPROCESSESTHATCANPERMITAMACHINETOOLTOFAREXCEEDTHECAPABILITIESOFTHEMOSTEXPERIENCEDMACHINISTINTHISSECTIONWEWILLLOOKATCNCMACHININGUSINGCHIPMAKINGCUTTINGTOOLSCNCCONTROLLERSAREUSEDTODRIVEANDCONTROLAGREATVARIETYOFMACHINESANDMECHANISMS,SOMEEXAMPLESWOULDBEROUTERSINWOODWORKING；LASERS,PLASMAARC,FLAMECUTTING,ANDWATERJETSFORCUTTINGOFSTEELPLATE；ANDCONTROLLINGOFROBOTSINMANUFACTURINGANDASSEMBLYTHISSECTIONISONLYANOVERVIEWANDCANNOTTAKETHEPLACEOFAPROGRAMMINGMANUALFORASPECIFICMACHINETOOLBECAUSEOFTHETREMENDOUSGROWTHINNUMBERSANDCAPABILITYOFCOMPUTERS,CHANGESINMACHINECONTROLSARERAPIDLYANDCONSTANTLYTAKINGPLACETHEEXCITINGPARTOFTHISEVOLUTIONINMACHINECONTROLSISTHATPROGRAMMINGBECOMESEASIERWITHEACHNEWADVANCEDINTHISTECHNOLOGYADVANTAGESOFNUMERICALCONTROLAMANUALLYOPERATEDMACHINETOOLMAYHAVETHESAMEPHYSICALCHARACTERISTICSASACNCMACHINE,SUCHASSIZEANDHORSEPOWERTHEPRINCIPLESOFMETALREMOVALARETHESAMETHEBIGGAINCOMESFROMTHECOMPUTERCONTROLLINGTHEMACHININGAXESMOVEMENTSCNCCONTROLLEDMACHINETOOLSCANBEASSIMPLEASA2AXISDRILLINGMACHININGCENTERFIGUREO1WITHADUALSPINDLEMACHININGCENTER,THELOWRPM,HIGHHORSEPOWERSPINDLEGIVESHIGHMETALREMOVALRATESTHEHIGHRPMSPINDLEALLOWSTHEEFFICIENTUSEOFHIGHCUTTINGSPEEDTOOLSSUCHASDIAMONDSANDSMALLDIAMETERCUTTERSFIGUREO2THECUTTINGTOOLSTHATREMOVEMATERIALSARESTANDARDTOOLSSUCHASMILLINGCUTTERS,DRILLS,BORINGTOOLS,ORLATHETOOLSDEPENDINGONTHETYPEOFMACHINEUSEDCUTTINGSPEEDSANDFEEDSNEEDTOBECORRECTASINANYOTHERMACHININGOPERATIONTHEGREATESTADVANTAGEINCNCMACHININGCOMESFROMTHEUNERRINGANDRAPIDPOSITIONINGMOVEMENTSPOSSIBLEACNCMACHINEDOESDOTSTOPATTHEENDOFACUTTOPLANITSNEXTMOVE；ITDOESNOTGETFATIGUED；ITISCAPABLEOFUNINTERRUPTEDMACHININGERRORFREE,HOURAFTERHOURAMACHINETOOLISPRODUCTIVEONLYWHILEITISMAKINGCHIPSSINCETHECHIPMAKINGPROCESSISCONTROLLEDBYTHEPROPERFEEDSANDSPEEDS,TIMESAVINGSCANBEACHIEVEDBYFASTERRAPIDFEEDRATESRAPIDFEEDSHAVEINCREASEDFROM60TO200TO400ANDARENOWOFTENAPPROACHING1000INCHESPERMINUTEIPMTHESEHIGHFEEDRATESCANPOSEASAFETYHAZARDTOANYONEWITHINTHEWORKINGENVELOPEOFTHEMACHINETOOL徐州工程学院毕业设计论文2COMPLEXCONTOUREDSHAPESWEREEXTREMELYDIFFICULTTOPRODUCTPRIORTOCNCMACHININGCNCHASMADETHEMACHININGOFTHESESHAPESECONOMICALLYFEASIBLEDESIGNCHANGESONAPARTARERELATIVELYEASYTOMAKEBYCHANGINGTHEPROGRAMTHATDIRECTSTHEMACHINETOOLACNCMACHINEPRODUCESPARTSWITHHIGHDIMENSIONALACCURACYANDCLOSETOLERANCESWITHOUTTAKINGEXTRATIMEORSPECIALPRECAUTIONS,CNCMACHINESGENERALLYNEEDLESSCOMPLEXWORKHOLDINGFIXTURES,WHICHSAVESTIMEBYGETTINGTHEPARTSMACHINEDSOONERONCEAPROGRAMISREADYANDPRODUCTIONPARTS,EACHPARTWILLTAKEEXACTLYTHESAMEAMOUNTOFTIMEASTHEPREVIOUSONETHISREPEATABILITYALLOWSFORAVERYPRECISECONTROLOFPRODUCTIONCOSTSANOTHERADVANTAGEOFCNCMACHININGISTHEELIMINATIONOFLARGEINVENTORIES；PARTSCANBEMACHINEDASNEEDSINCONVENTIONALPRODUCTIONOFTENAGREATNUMBEROFPARTSMUSTBEMADEATTHESAMETIMETOBECOSTEFFECTIVEWITHCNCEVENONEPIECECANBEMACHINEDECONOMICALLYINMANYINSTANCES,ACNCMACHINECANPERFORMINONESETUPTHESAMEOPERATIONSTHATWOULDREQUIRESEVERALCONVENTIONALMACHINESWITHMODERNCNCMACHINETOOLSATRAINEDMACHINISTCANPROGRAMANDPRODUCTEVENASINGLEPARTECONOMICALLYCNCMACHINETOOLSAREUSEDINSMALLANDLARGEMACHININGFACILITIESANDRANGEINSIZEFROMTABLETOPMODELSTOHUGEMACHININGCENTERSINAFACILITYWITHMANYCNCTOOLS,PROGRAMMINGISUSUALLYDONEBYCNCPROGRAMMERSAWAYFROMTHECNCTOOLSTHEMACHINECONTROLUNITMCUONTHEMACHINEISTHENUSEDMOSTLYFORSMALLPROGRAMCHANGESORCORRECTIONSMANUFACTURINGWITHCNCTOOLSUSUALLYREQUIRESTHREECATEGORIESOFPERSONSTHEFIRSTISTHEPROGRAMMER,WHOISRESPONSIBLEFORDEVELOPINGMACHINEREADYCODETHENEXTPERSONINVOLVEDISTHESETUPPERSON,WHOLOADSTHERAWSTORKINTOTHEMCU,CHECKSTHATTHECORRECTTOOLSARELOADED,ANDMAKESTHEFIRSTPARTTHETHIRDPERSONISTHEMACHINEANDUNLOADSTHEFINISHEDPARTSINASMALLCOMPANY,ONEPERSONISEXPECTEDTOPERFORMALLTHREEOFTHESETASKSCNCCONTROLSAREGENERALLYDIVIDEDINTOTWOBASICCATEGORIESONEUSESAWARDADDRESSFORMATWITHCODEDINPUTSSUCHASGANDMCODESTHEOTHERUSERSACONVERSATIONALINPUT；CONVERSATIONALINPUTISALSOCALLEDUSERFRIENDLYORPROMPTEDINPUTLATERINTHISSECTIONEXAMPLESOFEACHOFTHESEPROGRAMMINGFORMATSINMACHININGAPPLICATIONSWILLBEDESCRIBESCAMANDCNCCAMSYSTEMSHAVECHANGEDTHEJOBOFTHECNCPROGRAMMERFROMONEMANUALLYPRODUCINGCNCCODETOONEMAXIMIZINGTHEOUTPUTOFCNCMACHINESSINCECNCMACHINETOOLSAREMADEBYAGREATNUMBEROFMANUFACTURERS,MANYDIFFERENTCNCCONTROLUNITSAREINUSECONTROLUNITSFROMDIFFERENTMANUFACTURERSUSEAVARIETYOFPROGRAMFORMATSANDCODESMANYCNCCODEWORDSAREIDENTICALFORDIFFERENTCONTROLLERS,BUTAGREATNUMBERVARYFROMONETOANOTHERTOPRODUCEANIDENTICALPARTONCNCMACHINETOOLSWITHDIFFERENTCONTROLLERSSUCHASONEBYFANCU,OKUMAORDYNAPATH,WOULDREQUIRECOMPLETELYDIFFERENTCNCCODESEACHMANUFACTURERISCONSTANTLYIMPROVINGANDUPDATINGITSCNCCONTROLLERSTHESEIMPROVEMENTSOFTENINCLUDEADDITIONALCODEWORDSPLUSCHANGESINHOWTHEEXISTINGCODEWORKSACAMSYSTEMSALLOWSTHECNCPROGRAMMERTOCONCENTRATEONTHECREATIONOFANEFFICIENTMACHININGPROCESS,RATHERTHENRELEARNINGCHANGEDCODEFORMATSACNCPROGRAMMERLOOKSAT徐州工程学院毕业设计论文3THEPRINTOFAPARTANDTHENPLANSTHESEQUENCEOFMACHININGOPERATIONSNECESSARYTOMAKEITFIGUREO3THISPLANINCLUDESEVERYTHING,FROMTHESELECTIONOFPOSSIBLECNCMACHINETOOLS,TOWHICHTOOLINGTOUSE,TOHOWTHEPARTISHELDWHILEMACHININGTAKESPLACETHECNCPROGRAMMERHASTOHAVEATHOROUGHUNDERSTANDINGOFALLTHECAPACITIESANDLIMITATIONSOFTHECNCMACHINETOOLSTHATAPROGRAMISTOBEMADEFORMACHINESPECIFICATIONSSUCHASHORSEPOWER,MAXIMUMSPINDLESPEEDS,WORKPIECEWEIGHTANDSIZELIMITATIONS,ANDTOOLCHANGERCAPACITYAREJUSTSOMEOFTHECONSIDERATIONSTHATAFFECTPROGRAMMINGANOTHERAREAOFMAJORIMPORTANCETOTHEPROGRAMMERISTHEKNOWLEDGEOFMACHININGPROCESSESANEXAMPLEWOULDBETHESELECTIONOFTHESURFACEFINISHREQUIREMENTSPECIFIEDINTHEPARTPRINTTHESEQUENCEOFMACHININGPROCESSESISCRITICALTOOBTAINACCEPTABLERESULTSCUTTINGTOOLLIMITATIONSHAVETOBECONSIDEREDANDTHISREQUIRESKNOWLEDGEOFCUTTINGTOOLMATERIALS,TOOLTYPES,ANDAPPLICATIONRECOMMENDATIONSAGOODPROGRAMMERWILLSPENDACONSIDERABLEAMOUNTOFTIMEINRESEARCHINGTHERAPIDLYGROWINGVOLUMEOFNEWANDIMPROVEDTOOLSANDTOOLMATERIALSOFTENTHETOOLTHATWASONTHECUTTINGEDGEOFTECHNOLOGYJUSTTWOYEARSAGOISNOWOBSOLETEINFORMATIONONNEWTOOLSCANCOMEFROMCATALOGSORTOOLMANUFACTURERSTOOLINGENGINEERSHELPINTOOLSELECTIONOROPTIMUMTOOLWORKINGCONDITIONSCANALSOBEOBTAINEDFROMTOOLMANUFACTURERSOFTWAREEXAMPLESWOULDBEKENNAMETALSTOOLPRO,SOFTWAREDESIGNEDTOHELPSELECTTHEBESTTOOLGRADE,SPEED,ANDFEEDRATESFORDIFFERENTWORKMATERIALSINTURNINGAPPLICATIONANOTHERVERYIMPORTANTFEATUREOFTOOLPROISTHEDISPLAYOFTHEHORSEPOWERREQUIREMENTFOREACHMACHININGSELECTIONTHISALLOWTHEPROGRAMMERTOSELECTACOMBINATIONOFCUTTINGSPEED,FEEDRATE,ANDDEPTHOFCUTTHATEQUALSTHEMACHINESMAXIMUMHORSEPOWERFORROUGHINGCUTSFORAFINISHINGCUT,THESMALLESTDIAMETEROFTHEPARTBEINGMACHINEDISSELECTEDANDTHENTHECUTTINGSPEEDVARIEDUNTILTHERPMISEQUALTOTHEMAXIMUMRPMOFTHEMACHINETHISHELPSINMAXIMIZINGMACHININGEFFICIENCYKNOWINGTHEHORSEPOWERREQUIREMENTFORACUTISCRITICALIFMORETHANONETOOLISCUTTINGATTHESAMETIMESOFTWAREFORAMACHININGCENTERAPPLICATIONWOULDBEINGERSOLLTOOLCOMPANYSACTUALCHIPTHICKNESS,APROGRAMUSEDTOCALCULATETHECHIPTHICKNESSINRELATIONTOFEEDPERTOOTHFORAMILLINGCUTTER,ESPECIALLYDURINGASHALLOWFINISHINGCUTINGERSOLLSRIGIDITYANALYSISSOFTWAREEALCULATESTOOLDEFLECTIONFORENDMILLSASAFUNCTIONOFTOOLSTIFFNESSANDTOOLFORCETOTHISPOINTWELOOKEDATSOMEGENERALQUALIFICATIONSTHATAPROGRAMMERSHOULDPOSSESSNOWWEEXAMINEHOWACAMSYSTEMWORKSPOINTCONTROLCOMPANYSSMARTCAMSYSTEMUSESTHEFOLLOWINGAPPROACHFIRST,THEPROGRAMMERMAKESAMENTALMODELOFTHEPARTTOBEMACHINEDTHISINCLUDESTHEKINDOFMACHININGTOBEPERFORMEDTURNINGORMILLINGTHENTHEPARTPRINTISSTUDIEDTODEVELOPAMACHININGSEQUENCE,ROUGHINGANDFINISHINGCUTS,DRILLING,TAPPING,ANDBORINGOPERATIONSWHATWORKHOLDINGDEVICEISTOBEUSED,AVISEORFIXTUREORCLAMPSAFTERTHESECONSIDERATIONS,COMPUTERINPUTCANBESTARTEDFIRSTCOMESTHECREATIONOFAJOBPLANTHISJOBPLANCONSISTSOFENTRIESSUCHASINCHORMETRICUNITS,MACHINETYPE,PARTID,TYPEOFWORKPIECEMATERIAL,SETUPNOTES,ANDADESCRIPTIONOFTHEREQUIREDTOOLSTHISLINEOFINFORMATIONDESCRIBESTHETOOLBYNUMBER,TYPE,ANDSIZEANDINCLUDESTHE徐州工程学院毕业设计论文4APPROPRIATECUTTINGSPEEDANDFEEDRATEAFTERALLTHESELECTEDTOOLSAREENTERED,THEFILEISSAVEDTHESECONDPROGRAMMINGSTEPISTHEMAKINGOFTHEPARTTHISREPRESENTSAGRAPHICMODELINGOFTHEPROJECTEDMACHININGOPERATIONAFTERSELECTINGATOOLFROMTHEPREPAREDJOBPLAN,PARAMETERSFORTHECUTTINGOPERATIONAREENTEREDFORADRILL,ONCETHECOORDINATELOCATIONOFTHEHOLEANDTHEDEPTHAREGIVEN,ACIRCLEAPPEARSONTHATSPOTIFTHELOCATIONISINCORRECT,THEUNDOCOMMANDERASESTHISENTRYANDALLOWSYOUTOGIVENEWVALUESFORTHISOPERATIONWHENANENDMILLISBEINGUSED,CUTTINGMOVEMENTSTOOLPATHAREUSUALLYDEFINEDASLINESANDARCSASALINEISPROGRAMMED,THETOOLPATHISGRAPHICALLYDISPLAYEDANDERRORSCANBECORRECTEDINSTANTLYATANYTIMEDURINGPROGRAMMING,THECOMMANDSHOWPATHWILLSHOWTHEACTUALTOOLPATHFOREACHOFTHEPROGRAMMEDTOOLSTHETOOLSWILLBEDISPLAYEDINTHESEQUENCEINWHICHTHEYWILLBEUSEDDURINGACTUALMACHININGIFTHESEQUENCEOFATOOLMOVEMENTNEEDSTOBECHANGED,AFEWKEYSTROKESWILLTOTHATSOMETIMESINCAMTHEPROGRAMMINGSEQUENCEISDIFFERENTFROMTHEACTUALMACHININGORDERANEXAMPLEWOULDBETHEMACHININGOFAPOCKETINAPARTWITHCAM,THEFINISHEDPOCKETOUTLINEISPROGRAMMEDFIRST,THENTHISOUTLINEISUSEDTODEFINETHEROUGHINGCUTSTOMACHINETHEPOCKETTHEROUGHINGCUTSARECOMPUTERGENERATEDFROMINPUTSSUCHASDEPTHANDWIDTHOFCUTANDHOWMUCHMATERIALTOLEAVEFORTHEFINISHCUTDIFFERENTROUGHINGPATTERNSCANBETRIEDOUTTOALLOWTHEPROGRAMMERTOSELECTTHEMOSTEFLLCIENTONEFORTHEACTUALMACHININGCUTSSINCEEACHTOOLISREPRESENTEDBYADIFFERENTCOLOR,ITISEASYTOOBSERVETHETOOLPATHMADEBYEACHONEACAMSYSTEMLETSTHEPROGRAMMERVIEWTHEGRAPHICSMODELFROMVARYINGANGLES,SUCHASATOP,FRONT,SIDE,ORISOMETRICVIEWATOOLPATHTHATLOOKSCORRECTFROMATOPVIEW,MAYSHOWFROMAFRONTVIEWTHATTHEDEPTHOFTHECUTTINGTOOLISINCORRECTCHANGESCANEASILYBEMADEANDSEENIMMEDIATELYWHENTHETOOLPATHANDTHESEQUENCEOFOPERATIONSARESATISFACTORY,MACHINEREADYCODEHASTOBEMADETHISISASEASYASSPECIFYINGTHECNCMACHINETHATISTOBEUSEDTOMACHIN
