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外文翻译超高速靠模工具机进行航空零件的制造1.doc

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外文翻译超高速靠模工具机进行航空零件的制造1.doc

南京工程学院毕业设计说明书(论文)第1页ULTRAHIGHSPEEDPROFILERFORAIRCRAFTPARTSMACHININGUHP120BDEVELOPMENTGOALSANDPERFORMANCEKAZUYATANAKAMANAGERDESIGNINGSECTⅡ,ENGINEERINGDEPTⅠ1INTRODUCTIONITISGENERALLYSAIDTHATTHECONDITIONSSURROUNDINGTHEAIRCRAFTINDUSTRYHAVEBEENLESSTHANOPTIMALSINCETHETERRORISTATTACKOFSEPTEMBER11,2001,BUTTHEJAPANESEAIRCRAFTINDUSTRYSEEMSTOBEINASLIGHTLYDIFFERENTSITUATIONTHISOBSERVATIONISSUPPORTEDBYTHEFACTTHATTHEDEFENSEAGENCYS“PX”ADVANCEDANTISUBMARINEPATROLPLANEAND“CX”CARGOTRANSPORTPLANEPROJECTSHAVEAPPROVED,ANDBOEINGANDAIRBUSRELATEDCONTRACTSHAVENOTDECLINESIGNIFICANTLYTHANKSTOTHESEANDOTHERFACTORS,SUCHASTHEFACTTHATTHEINDUSTRYISENTERINGTHEEQUIPMENTREPLACEMENTPHASE,THEJAPANESEAIRCRAFTINDUSTRYISCURRENTLYINRELATIVELYGOODSHAPEUNDERTHEINFLUENCEOFTHEGLOBALMARKETNEEDS,THEREISVERYSTRONGDEMANDFORREDUCINGTHECOSTSOFCIVILAIRCRAFTPARTSTOMEETTHISDEMAND,AIRCRAFTMANUFACTURESANDJOBSHOPSCONTRACTEDTOSUPPLYPARTSTOTHEMHAVEBEENWORKINGHARDTOREDUCECOSTANDIMPROVEMANUFACTURINGTECHNOLOGYANDPRODUCTIVITYTHENUMBEROFAIRCRAFTPRODUCEDBYTHEMANUFACTURERSOFSMALLJETAIRCRAFTISINCREASINGATAMUCHFASTERRATETHANTHENUMBEROFAIRCRAFTPRODUCEDBYMANUFACTURERSMOREORLESSSPECIALIZINGINLARGERAIRCRAFT,SUCHASBOEINGANDAIRBUSDESPITETHESTEADYGROWTHOFDEMAND,JOBSHOPSUNDERCONTRACTWITHTHESEAIRCRAFTMANUFACTUERSAREBEINGFACEDWITHINCREASINGPRESSURESFORCOSTREDUCTIONTHEEMERGENCEOFSOUTHEASTASIANCOUNTRIESCAPABLEOFPRODUCINGPARTSATLOWCOSTHASMADEPRICECOMPETITIONFIERCERTHECHINESE南京工程学院毕业设计说明书(论文)第2页AIRCRAFTINDUSTRYISBURSTINGWITHENERGYBECAUSEJOBSHOPSINCHINACANNOWCOMPETEWITHJAPANESEJOBSHOPSINLEADTIMEANDQUALITYINADDITIONTOBEINGABLEPRODUCEPARTSATLOWERCOSTSGIVENTHESEGLOBALTRENDS,ITCANBESAIDTHATTHEJAPANESEAIRCRAFTINDUSTRYSPOSITIONISDELICATEINTHECOMPETITIVEMARKETINSPITEOFLEADTIMEANDQUALITYSUPERIORITY,THEJAPANESEAIRCRAFTINDUSTRYISFIGHTINGASTEEPLYUPHILLBATTLEINPRICECOMPETITIONTOHELPCOPEWITHTHESITUATIONASAMACHINETOOLMANUFACTURER,SNKHASDEVELOPEDUHP120B,ANADVANCED5AXISULTRAHIGHSPEEDHORIZONTALPROFILERTHATISATONCEMOSTCOSTEFFECTIVEANDHIGHLYPRODUCTIVETHERESTOFTHISAIRCRAFTINTRODUCESTHENEWPROFILER2BACKGROUNDBRIEFHISTORYOFPROFILERDEVELOPMENTATSNKSINCETHEDEVELOPMENTOFSM13SPARMILLWITH13NUMERICALLYCONTROLLEDAXESIN1967,SNKHASDEVELOPEDMANYMACHINETOOLSDESIGNEDFORAIRCRAFTPARTSMACHININGANDFIVEAXISPROFILES,ANDDELIVEREDMANYMACHINESTOSPECIALTYJOBSHOPSBOTHINJAPANANDABROADONEOFTHELARGERMACHINESRECENTLYDEVELOPEDANDDELIVEREDISATWOGANTRY,ABAXISTYPE,THREESPINDLEFIVEAXISPROFILERWITHA64METERLONGBEDWITHA4METERWIDEWORKINGSURFACETHESEPROFILERSAREVERTICALSPINDLEMACHINESTHATENABLETHEOPERATORTOSETUPALARGEWORKPIECEONTHEBEDINASTABLEPOSITIONASTIMEPASSED,HOWEVER,THEWAYAIRCRAFTPARTSAREMANUFACTUREDHASCHANGEDMACHININGOFFORGINGS,WHICHUSEDTOBETHEMETHODOFMANUFACTURINGAIRCRAFTPARTS,BEGANTOBEREPLACEDBYTHEMETHODOFMANUFACTURINGAIRCRAFTPARTSOUTOFSOLIDMATERIALINORDERTOREDUCETHENUMBERANDWEIGHTOFPARTSTHISMEANTREMOVINGMOSTOFTHEMATERIALDURINGMACHININGUSEOFHIGHSPEEDMACHINING,WHICHISDESIGNEDTOINCREASEPRODUCTIVITYALSODRAMATICALLYINCREASEDTHEVOLUMEOFMETALREMOVEDPERHOUR,MAKINGVERTICALSPINDLEMACHINESANUNREALISTICCHOICEFROMTHESTANDPOINTOFCHIPREMOVAL南京工程学院毕业设计说明书(论文)第3页TOMEETTHECHANGINGNEEDS,SNKDEVELOPEDHPS4B,ALARGE5AXISHIGHSPEED,HORIZONTAL,TILTINGTABLETYPEPROFILERPARTSOUTOFSOLIDMATERIAL,EASYSETUPANDEFFICIENTCHIPREMOVALTHENEWMACHINEWASPUTONEXHIBITATTHE1998CHICAGOSHOWANDWASHAILEDBYAIRCRAFTPARTSJOBSHOPSSINCE,HOWEVER,HPS4BISALARGERMACHINEWITHA210MMACHININGENVELOPE,ITWASTOOLARGEANDTOOEXPENSIVEFORSMALLERJOBSHOPSTODEMONSTRATETHESUPERIORITYOFTHEMACHINECONCEPTANDEASYOPERATIONOFFEREDBYTHISTYPEOFMACHINE,SNKDEVELOPEDAMACHINEBASEDONASIMILARCONCEPTTHISMACHINE,HPS120B,ISACOMPACTANDREASONABLYPRICED5AXISHIGHSPEEDHORIZONTALPROFILERANDWASEXHIBITEDATTHE2000CHICAGOSHOWTHISMACHINEWASACCLAIMEDFORITSPERFORMANCEANDECONOMYANDHASNOWBECOMEONEOFTHEGREATESTVALUEADDEDMODELSOFTHESNKPROFILERSMARKETNEEDS,HOWEVER,HAVECHANGEDRAPIDLY,ANDHASBEENINCREASINGPRESSUREFORCOSTREDUCTION,ASMENTIONEDEARLIERRECOGNIZINGTHENEEDFORAHIGHSPEEDPROFILERCAPABLEOFPERFORMINGMACHININGWITHUNPRECEDENTEDEFFICIENCY,SNKDEVELOPEDITSNEWEST5AXISULTRAHIGHSPEEDHORIZONTALPROFILER,UHP120B,THATINHERITSTHEACCLAIMEDFEATURESOFTHEHPSSERIESOFPROFILERS,ANDPUTTHEMACHINEONEXHIBITATTHE2001EMOSHOW3UHP120BDEVELOPMENTGOALSANDPERFORMANCETHEAIMOFDEVELOPMENTOFUHP120BISTOOFFERTOUSERSACOSTEFFECTIVEMACHINETHATBOOSTSPRODUCTIVITYINTHEMACHININGOFMEDIUMANDSMALLSIZEDPARTSOFALUMINUM,AMATERIALWIDELYUSEDINAIRCRAFTAPPLICATIONSUSINGHPS120B,WHICHHASPROVENPERFORMANCEINTHEFIELDOFHIGHSPEEDMACHINING,ASABASEMACHINE,SNKDEVELOPEDUHP120BTHROUGHEXTENSIVERESEARCHANDDEVELOPMENTTHERESTOFTHISSECTIONINTRODUCESPRINCIPALTECHNOLOGIESINCORPORATEDINTOTHENEWMACHINETOACHIEVETHEGOALSOFTHEMACHINE南京工程学院毕业设计说明书(论文)第4页FORINFORMATIONONTHEMACHINESMAINSPECIFICATIONS,PLEASESEENEWPRODUCTNEWSINTHISREPORTTECHNOLOGYTOACHIEVEHIGHPRODUCTIVITY1DEVELOPINGHIGHSPEEDHIGHPOWERSPINDLEUNITITISGENERALLYSAIDTHATTHEREISNOLIMITTOCUTTINGSPEEDSUSEDINTHEMACHININGOFALUMINUMTOMANUFACTUREAIRCRAFTPARTSTHEKEYTOINCREASINGPRODUCTIVITYINSUCHMACHININGISTOFINDAWAYTOACHIEVEHIGHMETALREMOVALRATESATAHIGHCUTTINGSPEEDSTOTHISEND,WEDEVELOPEDANEW75KW,32000MIN1,HIGHSPEEDHIGHPOWERSPINDLEUNITWITHACOMPACT,POWERFULDRIVEMOTORFORTHENEWPROFILER,THISHIGHPERFORMANCESPINDLEUNITRANKSAMONGTHEHIGHESTINTERMSOFSPINDLESPEEDANDPOWERFORTHESPINDLENOSETAPERUSEDTHESPINDLEUNITOFTHESTANDARDCONFIGURATIONISEQUIPPEDFORHSKE63TOOLS,BUTITCANBEMODIFIEDFORUSEWITHBT40OROTHEREQUIPPEDWITHANUNDERRACELUBRICATIONSYSTEMTOENHANCERELIABILITYOFHIGHSPEEDMACHININGDURINGLONGTIMEOPERATIONS2INCREASINGFEDERATESHIGHAXISFEDERATESANDHIGHACCELERATION/DECELERATIONCAPABILITIESAREIMPORTANTFACTORSDIRECTLYAFFECTINGMACHININGTIMEANDMACHININGACCURACYTHATCANBEACHIEVEDINHIGHPEEDMACHININGFORTHELINEARAXES,TWINDRIVESYSTEMSANDTWOMOTORDRIVEMECHANISMSHAVEBEENEMPLOYEDTOINCREASEFEEDRATESANDMAXIMIZEACCELERATION/DECELERATION,ANDTOINCREASEPRODUCTIVITYASARESULTTHEMAXIMUMCUTTINGFEDERATESOF40M/MINAND4800DEG/MINHAVEBEENACHIEVEDFORTHELINEARAXESANDROTARYAXES,RESPECTIVELYWEBELIEVETHATUHP120BRANKSAMONGTHEBESTINTERMSOFSPINDLEANDAXISFEEDCAPABILITIESINTHEFIELDOFTHEMACHININGOFALUMINUMAIRCRAFT

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