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外文翻译--模具型腔数控加工计算机辅助刀具选择和研究.doc

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外文翻译--模具型腔数控加工计算机辅助刀具选择和研究.doc

毕业设计(论文)外文文献翻译题目专业名称机械设计制造及其自动化班级学号学生姓名指导教师填表日期2011年05月20日MOULDTYPEOFNUMERICALCONTROLPROCESSCOMPUTERASSISTTHECUTTERCHOOSEANDSTUDYFOREWORDNUMERICALCONTROLINCLUDECUTTERPRODUCTIONANDCUTTEROFORBITCHOOSETWOKEYPROBLEMSPROCESS,THEFIRSTPROBLEMHASBEENGOTANDSTUDIEDEXTENSIVLYANDDEEPLYOVERTHEPAST20YEARS,ALOTOFALGORITHMSDEVELOPEDHAVEALREADYGOTAPPLICATIONINCOMMERCIALCAD/CAMSYSTEMMOSTCAMSYSTEMSCANPRODUCETHECUTTERORBITAUTOMATICALLYAFTERUSERSINPUTRELEVANTPARAMETERSATPRESENTCOMPARATIVELYSPEAKING,ITISSTILLNOTRIPETOREGARDQUALITY,EFFICIENCYASTHERESEARCHOFCHOOSINGTHEPROBLEMOFCUTTEROFOPTIMIZINGTHEGOALCORRECTLY,DONOTHAVECOMMERCIALCAMSYSTEMTHATCANOFFERTHEPREFERREDDECISIONSUPPORTTOOLOFCUTTERATPRESENT,THEREFOREITISDIFFICULTTOREALIZETHEINTEGRATINGAUTOMATICALLYANDORGANICALLYOFCAD/CAMTHECUTTERISCHOSENTOUSUALLYINCLUDECUTTERTYPEANDCUTTERSIZEGENERALLYSPEAKING,SUITABLEFORONEPROCESSINGCUTTEROFTARGETFORMUCHKIND,ONECUTTERCANFINISHDIFFERENTPROCESSINGTASKS,SOITISEASIERTOONLYCONSIDERMEETINGTHECUTTERTHATBASICALLYPROCESSESTHEREQUIREMENTANDCHOOSE,ESPECIALLYTOGEOMETIRCCHARACTERISTICSOFMODELSUCHASTHEHOLE,TROUGH,ETCBUTINFACT,ITISCOMMONFORCUTTERTOCHOOSEANDSUREOPTIMIZATIONGOALINTERRELATE,FORINSTANCEMOSTHEAVYTOCUTEFFICIENCY,PROCESSTIME,MINIMUMPROCESSCOST,LONGESTSERVICELIFE,ETCATLEAST,SOTHECUTTERISCHOSENITISACOMPLICATEDOPTIMIZATIONQUESTIONSUCHASMOULDTYPEONEOFPARTS,BECAUSETHEGEOMETIRCFORMISCOMPLICATEDUSUALLYINCLUDECURVEDSURFACEOFFREEDOMANDISLAND,INFLUENCEGEOMETRYTHATCUTTERCHOOSEITRESTRAINSFROMTOBECANEXPLICITTOSAYAMONGCADMODEL,NEEDTODESIGNTHECORRESPONDINGALGORITHMTODRAW,THEREFORECHOOSETHECUTTERSPECIFICATIONSUITABLEANDCUTTERASSOCIATION,ITISNOTEASYTHINGSBYIMPROVINGEFFICIENCYANDQUALITYPROCESSEDINNUMERICALCONTROLMOULDTYPEGENERALLYWITHPREPARATIONMETHODTHATNUMERICALCONTROLMILL,USUALLYINCLUDINGROUGHMACHINING,HALFFINISHMACHINING,PRECISEPROCESSOFPROCESSINGETCTHEPRINCIPLEOFROUGHMACHININGISTOSPARENOEFFORTTOREMOVETHESURPLUSMETALWITHHIGHEFFICIENCY,THEREFOREHOPETOCHOOSETHELARGERCUTTER,BUTTHECUTTERISOVERSIZED,MAYCAUSETHEINCREASEOFTHECRUDEVOLUME;HALFFINISHMACHININGOFTASKSTOREMOVEROUGHMACHININGLEAVEOVERSTEPTHATGETOFFMAINLY;FINISHMACHININGMAINLYGUARANTEESSIZEOFTHEPARTANDSURFACEQUALITYCONSIDER,GOON,SELECTEXIST,SUREBYCOMPUTERDIFFICULTAUTOMATICALLYTOTALLYUPTILLNOW,THEREFOREASSISTTHECUTTERTOCHOOSEINTHECOMPUTERTHATWEDEVELOPEDCOMPUTERAIDEDTOOLSELECTION,CATSAMONGTHESYSTEM,BASEON,PROVIDEONEAIDDECISIONTOOLFORUSER,ROUGHMACHINING,HALFFINISHMACHINING,PRECISETOPROCESSETC,THEREALPOLICYMAKINGPOWERISSTILLLEFTTOUSERS,INORDERTOGIVEFULLPLAYTOTHEADVANTAGESOFCOMPUTERANDPEOPLE1BASICSTRUCTUREOFTHESYSTEMCATSSYSTEMISCADMODEL,OUTPUTFORCUTTERTYPE,CUTTERSPECIFICATION,MILLDEPTHOFSHARPENING,ENTERTHEGIVINGAMOUNT,ROTATIONALSPEEDOFMAINSHAFTCUTTHEPACEANDPROCESSSIXPARAMETERSSUCHASTIMESUCHASFIG1,INCLUDINGCHOOSINGTHEAIDDECISIONTOOLINCUTTERTYPE,ROUGHMACHININGCUTTERCHOOSEAIDDECISIONTOOL,HALFFINISHMACHININGCUTTERCHOOSEAIDDECISIONTOOLANDFINISHMACHININGCUTTERCHOOSEAIDDECISIONTOOL,ETCGIVENTHEROUGHMACHININGINXINGQIANGPROCESSINGOFTHEIMPORTANTPOSITIONUSUALLYRELYTIME510TIMES,ROUGHMACHINING,THESYSTEMAUTOMATICALLYOPTIMIZEPORTFOLIOWITHCUTLERYFUNCTIONSTOENHANCEOVERALLPROCESSINGEFFICIENCYINADDITIONTOTHEDECISIONMAKINGTOOLS,THESYSTEMALSOHASADETAILEDLOOKCUTLERYNORMS,BASEDONTHETYPEANDSIZECUTLERYRECOMMENDEDPROCESSINGPARAMETERSANDASSESSTHEFUNCTIONOFPROCESSINGTIME,THELASTGENERATIONOFTHEOVERALLRESULTSOFCHOICECUTLERYSTATEMENTSFIGURE2ALLTHEDATAANDKNOWLEDGESYSTEMSCUTLERYDONEBYTHEBACKGROUNDDATABASESUPPORT2KEYTECHNOLOGIESANDALGORITHMS21CUTLERYTYPECHOICEACCORDINGTOASSISTANTXINGQIANGDIGITALPROCESSINGPRACTICE,XINGQIANGXISTATEGENERALPROCESSINGCUTLERYINTOMILLINGCUTTER,MILLINGCUTTERRADIUSMILLINGCUTTERANDTHEFIRSTTHREEBALLSDBASEDCUTLERYDIAMETER,RADIUSRADIUSRWHENR0FORMILLINGCUTTER,0RCUTLERYCANBEDIVIDEDINTOTHEOVERALLSTYLEANDEMBEDFILMSCEREMONYFORINLAYFILMSTYLE,THEKEYISTOSELECTTHEMATERIALSRAZORBLADES,RAZORBLADESMATERIALSCHOICEDEPENDSONTHREEELEMENTSTHEPROCESSINGOFWORKINGMATERIALS,MACHINETOOLSANDCUTLERYJIGSTABILITYOFTHESTATESTRUCTURESPROCESSINGSYSTEMWILLBETRANSLATEDINTOMATERIALSTEEL,STAINLESSSTEEL,CASTIRON,NONFERROUSMETALS,MATERIALSANDHARDTOCUTMATERIALSSIXGROUPSMACHINETOOLJIGSTABILITYINTOGOOD,BETTERANDLESSTHANTHREELEVELSCUTLERYINVESTIGATIONINTOTHESHORTANDLONGCANTILEVERSTRUCTURESTWO,THESYSTEMAUTOMATICALLYREASONINGONTHEBASISOFTHESPECIFICCIRCUMSTANCESOFRAZORBLADESMATERIALS,DECISIONMAKINGKNOWLEDGEFROMWALTERCUTLERYMANUALSYSTEMBYTHEUSERSFIRSTCHOICECUTLERYTYPEINTHEWORLDTOEMBEDFILMSTYLECUTLERY,ARULESBASEDAUTOMATEDREASONINGSUITABLERAZORBLADESMATERIALSFOREXAMPLE,IFTHEFINALPROCESSINGOFMATERIALSFORTHESTEEL,MACHINETOOLJIGFORGOODSTABILITY,CUTLERYCANTILEVERSTRUCTURESFORSHORT,RAZORBLADESMATERIALSFORWAP25ROUGHMACHININGCUTLERYPORTFOLIOOPTIMIZATIONXINGQIANGROUGHMACHININGTHEAIMISTOMAXIMIZETHEREMOVALOFEXCESSMETALNORMALLYUSEDMILLINGCUTTER,TAKECUTTINGAPPROACHTHUS,3DMOULDXINGQIANGTHEROUGHMACHININGPROCESS,ISACTUALLYASERIESOF25DCOMPONENTSXINGQIANGPROCESSINGCUTLERYOPTIMIZATIONISTOFINDAGROUPOFCUTLERYPORTFOLIO,ALLOWINGFORMAXIMUMEFFICIENCYREMOVALOFMOSTMETALSCUTLERYPORTFOLIOOPTIMIZED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