外文翻译机械设计.docx
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外文翻译机械设计
MechanicalDesign
Abstract:
Amachineisacombinationofmechanismsandothercomponentswhichtransforms,transmits,orutilizesenergy,force,ormotionforausefulpurpose.Examplesareengines,turbines,vehicles,hoists,printingpresses,washingmachines,andmoviecameras.Manyoftheprinciplesandmethodsofdesignthatapplytomachinesalsoapplytomanufacturedarticlesthatarenottruemachines,fromhubcapsandfilingcabinetstoinstrumentsandnuclearpressurevessels.Theterm"mechanical
design"isusedinabroadersensethan"machinedesign"toincludetheirdesign.Forsomeapparatus,thethermalandfluidaspectsthatdeterminetherequirementsofheat,flowpath,andvolumeareseparatelyconsidered.However,themotiorandstructuralaspectsandtheprovisionsforretentionandenclosureareconsiderationsinmechanicaldesign.Applicationsoccurinthefieldofmechanicalengineering,andinotherengineeringfieldsaswell,allofwhichrequiremechanicalevices,suchasswitches,cams,valves,vessels,andmixers.
keyword:
MechanicalDesignmechanismsDesignProcessTolerance
Designprocess
Thedesignbeginsfromrealoforthedemandofimagination.Theexistinginstrumentmayneedtotakeintoimproveontheenduring,efficiency,weight,speedorthecost.Mayneednewinstrumenttocompletebeforefunctiondonebyperson,suchasAssembleormaintain.Thetargetisallorpartlyaftermakingsure,designofthenextmoveistoconceiveoutlinetheorganizationthatcancompletethefunctionneededanditarrangesforthis,drawinggrassdiagramtobeworthbarehandedbiggest,itisn'tonlyonepersonalrecordofviewpointwithwithothersdiscussionofassistancemeans,andbesuitablefortocommunicatewithownviewpointparticularly,isthestimulantwhichcreatessexwayofthinkingtostillneedextensiveknowledgeconcerningparts,becauseathesetnewmachineusuallyfrombefamiliarwithofeachkindofspare
partsrescheduleorsubstitutebutbecome,changedsizeandmaterialperhaps.Regardlessatconceiveoutlineprocessinstillafter,adesignwillcarryonafastorroughcalculationoranalyzetomakesureregulationsizeandpossibility.Whensomeconcerningneedorcanuseamountofspaceofviewpointassuranceafter,canstartproratapaintinggrassdiagram.
Finally,1completedaccordingtothedesignofthefunctionandthecredibility,canmakekindmachine.lftestsatisfied,andifthedevicewantsmassproduction,willtothefirstdesigncarryonacertainmodificationtoinsurewithlowercostmass-produce.Lateronseveralyearsofmakeanduseaperiod,designprobablybecauseofconceiveoutlinenewviewpointperhapsaccordingtotestandexperiencefoundationoffurtheranalyticalthechangeshownbutchange.Sellattraction,customer'ssatisfactionandmanufacturingcoststoallhavesomethingtodowithdesign,thesuccesswhichdesignsabilityandengineeringinvestmentiscloselyrelated.
Somedesignstandards
Atthispart,someonesuggeststheattitudeoftheusagecreationcarriesonofanalysis,thiskindofanalysiscancauseagravenessimprovementandtobackuptheproductconceiveoutlinewithperfect,perhapstheproductfunctionismore,moreeconomicandmoreenduring.Creatingthestage'sneedingnotisfirstwithindependentstage.Althoughanalyzepersonnelthewholeprobablyirresponsibledesign,heisn'tonlytherightanswerof[with]problemthatcanbefromthenumeralputforwardwantinghimtoresolveonly,notonlyonlyisgiveshoulddintvalue,thesizeworkstolimitperhaps.Hecanputforwardmoreextensiveviews,forthepurposeofimprovementnormorproject.Becauseintheanalysisthe行ontortheanalysistheprocess,hewillacquaintwithtoequipanditsworkcondition,heisfullyplacedinabeneficialpositionwhichconceivesoutlinetochooseaproject.BesthecanputforwardasuggestionchangeshapetoEliminationmomentofforceorshoulddintconcentration,notallowtosetuptohavetocuttheorganizationthatnoodlesandexcessivedynamicstatecarryalotusgreatlybestishediscardshismeticulousofdesignbutisnotseeamachinediscardafterwards.
Forstiringuptocreatesexthinking,thesuggestiondesignsapersonnelandanalyticalthepersonnelusefollowingstandard.6ex-standardsareparticularlyapplicabletoananalysispersonnel,althoughhemayinvolvetoallthis10.
1.Createthephysicalfunctionthatsexlandutilizationneedwhenusingcombinethecontroldon'tneed.
2.Knowpracticalcarrylotusanditsimportance.
3.Considerinadvancethereisnofunctioncarryingalotus.
4.Inventtoaddtocarryaconditionmorebeneficially.
5.Provideminimumweightthemostbeneficialofdistributeinresponsetothedintwithrigid.
6.Useabasicandsquaredistancecalculationacomparisonandmakesizesuperiortoturn.
7.Selectbyexaminationsmaterialtoacquireafunctioncombination.
8.Atsparepartsandintegratedsparepartscarefulchoice.
9.Modifyafunctiondesignwiththeorientationproductionlineanddeclinelowcost
10.Considertomakepartsaccuratetopositionintheassemblewithwitheachothernotinterference
MechanicalDesign
Thewholemachinedesignisacomplicatedprocess.Designingthepersonnelhavetoatthusofrealm,suchascalmdownmechanics,kineticsdynamicsandmaterialmechanicshavegoodcultivatedmanners,havetoalsoacquaintwithmanufacturingmaterialandmakeacraftinaddition.Designingthepersonnelhastocancombineallrelatedfacts,carryingonTeachesWeiandcreatinggrassdiagramandgraphicstocome
todeliverthemanufacturingrequesttothecar.Thesquareonethatanyproductdesignsworksitanisthematerialthatthechoiceusedsformakingeachparts.Thedesignpersonneloftodaycangetaninnumerable.Whilechoosing,function,externalappearance,materialcostandmanufacturingcostsofproductareallveryimportant.Hadtobecarefultoevaluatethefunctionofmaterialbeforeanycalculation.
Itisnecessaryacarefulcalculationwiththeusefulnessofinsuringthedesign.Computetoneverappearonthediagram,butfromtenvariousreasonbesaved.Oncethewhicheverpartslosesefficacy,willclearuptodowhatwhiledesigningthisdefectivesparepartsatthebeginning;And,canacquireanexperiencedocumentfromcomputepastitem.Whileneedingthedesignforisingsimilarto,thepastrecordwillhaveatremendoushelp.
Thecheckofcomputing(withdiagramtopsize)isthemostimportant.Adecimalpointsmislayingpositioncanruinanoriginalandacceptableitem.Forexample,ifapersonwantstodesignabracketthatcanpropup100pounds,butitshouldcanpropup1000poundsoriginally,theresultaffirmationwillfail.Thesquareaspectnoodleshadtocheckachecktodesignagainawork.
Thecalculatorspeakstoisanofgreatusetoolforthestaffmember,caneaseadullcalculationandprovidetoexpandanalysistotheexistingdata.Handoversystemtomakethecalculatorassistancedesign(CAD)witheachotheraccordingtothecalculatorfunctionandthecalculatorlendsupporttoamanufacturing(CAM)tomakepossible.Passthusofsystem,mayconceiveoutlineafirststeptodelivertobeatborepapertotaketousedfornumeraltoprocesscontrolbutneednottodrawformalconstructiondiagram.
Themachinedesignforthelaboratorytest,modelandkindmachineisveryhelpful.Thelaboratoryprovidedalotofbuildupbasicconceptneedofinformation,however,canalsoacquirewiththemsomeconcerningproductFinally,howonthespotwouldtheunderstandingforworking.adesignpersonnelofsuccessshouldofferthestepthattheutmosteffortkeepsupwithages.Willappearnewmaterialandproduceamethodeveryday.Ifpaintinganddesignpersonnel'sdon'tacquaintingwithmodernmethodandmaterialmayputoutaction.Agooddesignpersonnelshouldusuallyreadtechniqueperiodicaltokeepupwitha
newdevelopment
Theengineeringworkisbad
Thesolidismadesureboundarybyitssurfaceboundary.Typicalmodelground,designapersonneltospecifyMr.tocallsizetoasparepartstomakeitcontenteditsdemand.Actuallybecauseofthesurfaceirregularandpropersurfaceroughdegree,eachsparepartscan'tmakeintoMr.tocallsize'shasingtoallowsizetohavesomevarietiescanmakewithinsuringrepeatedly.But,thevarietyallowedcan'tcertainlytoobigwithasformaketoassemblethefunctionofthepiecetobecomebad.Singlethevarietyallowedbysparepartsiscalledbusinesstrip.
Businesstripthistechnicaltermnotonlyisapplicabletofromtheacceptablescopeofthepartssizeof[with]manufacturingcraftcreation,butalsoisapplicabletoamachineorprocessesofexportation.Forexample,agivealreadysetnumberofthepowereachpedestalsofI.C.enginehavevariety.Actually,weusuallydiscoverthiskindofvarietymodelwillbeafrequencytodistributecurve,forexamplet.Thedistributes.(calltheGaussdistributeagain)Oneoftheworkwhichdesignsapersonnelisthevarietywhichspecifiessizeforasparepartsandallows,thisvaluecanproduceacceptablefunction.
Sparepartsbusinesstrip
Whenthereisnoappointedaccuratesizeinthediagram,mostorganizationsallhaveingeneralusebusinesstripofbeingapplicabletothesize.Forprocesssize,ingeneralusebusinesstrip'smayingbea士is0.5millimeters.Thereforebeingspecifiedto15.0millimeterscopesofsizescanbeof14.5-15.5millimeters.Otheringeneralusebusinesstripscanbeapplicabletosuchastheangleanddrillaholewithbluntbore,Thecasting,theforging,theweldedjointandweldtheangleetc.situation.
Canmakereferencetothediagramofpastorgeneralengineeringtopracticewhilegivingtheappoint