[机械设计自动化精品] 机械式前置汽车变速器实验台设计 英文文献及翻译

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1、毕业设计中英文翻译IntroductiontoMechanicalDesign机械设计简介高洪宇学生姓名：学号：0学院：机械工程与自动化学院专业：机械设计制造及其自动化指导教师：机械工程与自动化学院2011年06月IntroductiontoMechanicalDesignTheDesignProcessAmachineisacombinationofmechanismandothercomponentswhichtransforms,transmits,orutilizesenergy,force,ormotionforausefulpurpose.Examp

2、lesareengines,turbines,vehicle,hoists,printingpresses,washingmachines,andmoviecameras.Manyoftheprincipleandmethodsofdesignthatapplytomachinesalsoapplytomanufacturedarticlesthatarenottruemachines,fromhubcapsandfilingcabinetstoinstrumentsandnuclearpressurevessels.Theterm“mechanicaldesi

3、gn”isusedinabroadersensethan“mechanicaldesign”toincludetheirdesign.Forsomeapparatus,thethermalandfluidaspectsthatdeterminetherequirementsofheat,flowpath,andvolumeareseparatelyconsidered.However,themotionandstructuralaspectsandtheprovisionsforretentionandenclosureareconsiderationsinme

4、chanicaldesign.Applicationsoccurinthefieldofmechanicalengineering,andinotherengineeringfieldsaswell,allofwhichrequiremechanicaldevices,suchasswitches,cams,valves,vessels,andmixers.Designingstartswithaneed,realorimagined.Existingapparatusmayneedimprovementsindurability,efficiency,weig

5、ht,speed,orcost.Newapparatusmaybeneededtoperformafunctionpreviouslydonebymen,suchascomputation,assembly,orservicing.Withtheobjectivewhollyorpartlydefined,thenextstepindesignistheconceptionofmechanismsandtheirarrangementsthatwillperformtheneededfunctions.Forthis,freehandsketchingisofg

6、reatvalve,notonlyasrecordofone’sthoughtsandasanaidindiscussionwithothers,butparticularlyforcommunicationwithone’sownmind,asastimulantforcreativeideas.Also,abroadknowledgeofcomponentsisdesirable,becauseanewmachineusuallyconsistsofanewarrangementorsubstitutionofwell-knowntypesofcompone

7、nts,perhapswithchangesinsizeandmaterial.Eitherduringorfollowingthisconceptualprocess,onewillmakequickorroughcalculationsoranalysestodeterminegeneralsizeandfeasibility.Whensomeideaastotheamountofspacethatisneededoravailablehasbeenobtained,to-scalelayoutdrawingmaybestarted.Whenthegener

8、alshapeandaf