中國地質(zhì)大學(xué)長城學(xué)院本科畢業(yè)設(shè)計(jì)外文資料翻譯系別：工程技術(shù)系專業(yè)：機(jī)械設(shè)計(jì)制造及其自動(dòng)化姓名：學(xué)號：2012年3月5日MechanicalEngineeringintheInformationAgeIntheearly1980s,engineersthoughtthatmassiveresearchwouldbeneededtospeedupproductdevelopment.Asitturnsout,lessresearchisactuallyneededbecauseshortenedproductdevelopmentcyclesencourageengineerstouseavailabletechnologyforuse。inanewproductisriskyandpronetofailure.Takingshortstepsisasaferandusuallymoresuccessfullyapproachtoproductdevelopment.Shorterproductdevelopmentcyclesarealsobeneficialinanengineeringworldinwhichbothcapitalandlaborareglobal.Peoplewhocandesignandmanufacturevariousproductscanbefoundanywhereintheworld,butcontaininganewideaishard.Geographicdistanceisnolongerabarriertoothersfindingoutaboutyourdevelopmentsixmonthsintotheprocess.Ifyouvegotashortdevelopmentcycle,thesituationisnotcatastrophicaslongasyoumaintainyoulead.Butifyoureinthemidstofasixyeardevelopmentprocessandacompetitorgetswindofyourworker,theprojectcouldbeinmoreserioustrouble.Theideathatengineersneedtocreatanewdesigntosolveeveryproblemisquicklybecomingobsolete.ThefirststepinthemoderndesignprocessistobrowsetheInternetorotherinformationsystemstoseeifsomeoneelsehasalreadyanewtransmission,oraheatexchangerthatisclosetowhatyouneed.Throughtheseinformationsystem,youmaydiscoverthatsomeonealreadyhasmanufacturingdrawings,numericalcontroltapes,andeverythingelserequiredtomanufatureyourproduct.Engineerscanthenfocustheirprofessionalcompetenceonunsolvedproblems.Intalcklingsuchproblems,theavailabilityofwokstationsandaccesstotheinformationhignwaydramaticallyenhancethecapabilityoftheengineeringteamanditsproductivity.Theseinformationagetoolscangivetheteamaccesstomassivedatabasesofmaterialproperties,standards,technologies,andsuccessfuldesigns.Suchprotesteddesignscanbedownloadedfordirectuseorquicklymodifiedtomeetspecificneeds.Remotemanufacturing,inwhichproductionsaresentoutoveranetwork,isalsopossible.Youcouldendupwithavirtualcompanywhereyoudonthavetoseeanyhardware.Whentheproductiscompletedyoucandirectthemanufaturertodrop-shipittoyourcustomer.Periodicvisitstothecustomercanbemadetoensurethattheproductyoudesignedworkingaccordingtothespecification.Althoughallofthedevelopmentswontapplyequallytoeverycompany,thepotentialisthere.Customdesignusedtobelefttosmallcompany.Bigcompaniessneeredatittheyhatedtheideaofdealingwithnichemarketssmall-valumcustomsolutions.“Hereismyproduct,”oneofthebigcompanieswouldsay:“Thisisthebestwecanmakeityououghtlikeit.Ifyoudont,theressmallercompanydownthestreetthatwillworkonyourproblem.”Today,nearlyeverymarketisanichemarket,becausecustomersareselective.Ifyouignorethepotentialfortailoringyourproducttospecificcustomersneeds,youwilllosethemajorpartofyourmarketshare.Sincethesenichemarketsaretransient,yourcompanyneedstobeinapositiongtorespondtothemquickly.Theemgergenceofnichemarketsanddesignondemandhasalteredthewayengineersconductresearch.Today,researchiscommonlydirectedtowardsovlingparticularproblems.Althoughthissitustionisprobablytemporary,muchuncommittedtechnology,developedatgovernmentexpenseorwrittenoffbymajorcorporationgs,isavailabletodayatverylowcost.Followingmodestmodificationgs,suchtechnologycanofenbeuseddirectlyinproductdevelopment,whichallowsmanyorganizationstoavoidtheexpenseofanextensiveresearcheffort.Oncethetechnologyisfreeofmajorobstacles,theresearcheffortcanfocusonovercomingthebarrierstocommercializationgratherthanonpursuingnewandinteresting,butundefined,alternatives.Whenviewinthisprospective,engineeringresearchmustfocusprimarilyonremovingthebarrierstorapidcommercilizationgofknowntechnologies.Muchofthiseffortmustaddressqualityandreliabilityconcerns,whichareforemostinthemindsoftodaysconsumers.Clearly,areputationgforpoorqualityissynonymouswithbadbusiness.Everythingpossibleincludingthoroughinspectionattheendofthemanufacturinglineandautomaticreplacementofdefectiveproductsmustbedongtoassurethatthecustomerreceivesaproperlyfunctiongingproduct.Researchhastofocusonthecostbenefitoffatorssuchasreliability.Asreliabilityincreases,manufanturingcostsandthefinalcostsofthesystemwilldecrease.Having30%junkattheendofaproductionlinenotonlycostsaforturnbutalsocreatsanopportunityforacompetitortotakeyourideaandsellittoyourcustomers.Centraltotheprocessofimprovingreliabilityandlowingcostsistheintensiveandwidespreaduseofdesignsoftware,whichallowsengineerstospeedupeverystageofthedesignprocess.Shorteningeachstage,however,maynotsufficientlyreducethetimerequiredfortheentireprocess.Therefore,attentionmustalsobedevotedtoconcurrentengineeringsoftwarewithshareddatabasescanbeaccessedbyallmembersofthedesignteam.AswemovemorefullyintotheInformationAge,successwillrequirethattheengineerpossesssomeuniqueknowledgeofandexperienceinboththedevelopmentandthemanagementoftechnology.Successwillrequirebroadknowledgeandskillsaswellasexpertiseinsomekeytechnologiesanddisciplines；italsorequireakeenawarenessofthesocialandeconomicfactorsatworkinthemarketplace.Increasingly,inthefuture,routinproblemswillnotjustifyheavryengineeringexpenditures,andengineerswillbeexpectedtoworkcooperativelyinsolvingmorechallenging,moredemandingproblemsinsubstantiallylesstime.Wehavebegunanewphaseinthepracticeofengineering.Itoffersgreatpromiseandexcitementasmoreandmoreproblem-solvingcapabilityisplacedinthehandsofthecomputerizedandwiredengineer.Toassuresuccess,thecapabilityofourtoolsandtheunquenchedthirstforbetterproductsandsystemsmustbematchedbythejoyofcreationthatmarksallgreatengineeringendeavors.mechanicalengineeringisagreatprofession,anditwillbecomeevengreateraswemakethemostoftheopportunitiesofferedbytheInformationAge.Manyengineershaveastheirfunctionthedesigningofproductsthataretobebroughtintorealitythroughtheprocessingorfabricationofmaterials.Inthiscapacitytheyareakeyfatorinthematerialselection-manufaturingprocedure.Adesignengineer,betterthananyotherperson,shouldknowwhatheorshewantsadesigntoaccomplish.Heknowswhatassumptionshehasmadeaboutserviceloadsandrequirements,whatserviceenvironmenttheproductmustwithstand,andwhatappearancehewantsthefinalproducttohave.Inordertomeettheserequirementshemustselectandspecifythematerial（s）tobeused.Inmostcases,inordertoutilizethematerialandtoenabletheproducttohavethedesiredform,heknowsthatcertainmanufacturingprocesseswillhavetobeemployed.Inmanyinstances,theselectionofaspecificmaterialmaydictatewhatprocessingmustbeused.Atthesametime,whencertainprocessesaretobeused,thedesignmayhavetobemodifiedinorderfortheprocesstobeutilizedeffectivelyandeconomically.Certainlydimensionaltolerancescandictatetheprocessing.Inanycase,inthesequenceofconvertingthedesignintoreality,suchdecisionsmustbemadebysomeone.Inmostdistancestheycanbemademosteffectivelyatthedesignstage,bythedesignerifhehasareasonablyadequateknowledgeconcerningmaterialsandmanufacturingprocesses.Otherwise,decisionsmaybemadethatwilldetragtfromtheeffectivenessoftheproduct,ortheproductmaybeneedlesslycostly.Itisthusapparentthatdesignengineersareavitalfatorinthemanufacturingprocess,anditisindeedthecompanyiftheydesignforproducibilitythatis,foreffientproduction.Manufacturingengineersselectandcoordinatespecificprocessesandequipmenttobeused,orsuperviseandmanagetheiruse.Somedesignspecialtoolingthatisusedsothatstandardmachinescanbeutilizedinproducingspecialproducts.Theseengineersmusthaveabroadknowledgeofmachineandprocesscapabilitiesandofmaterials,sothatdesiredoperationscanbedoneeffectivelyandefficientlywithoutoverloadingordamagingmachinesandwithoutadverselyaffectingthematerialsbeingprocessed.Thesemanufacturingengineersalsoplayanimportantroleinmanufacturing.Arelativelysmallgroupofengineersdesignthemachinesandequipmentusedinmanufacturing.Theyobviouslyaredesignengineersand,relativetotheirproducts,theyhavethesameconcernsoftheinterrelationshipofdesign,materials,andmanufacturingprocesses.However,theyhaveanevengreaterconcernregardingthepropertiesofthematerialsthattheirmachinesaregoingtoprocessandtheinterreactionofthematerialsandthemach