欢迎来到人人文库网! | 帮助中心 人人文档renrendoc.com美如初恋!
人人文库网
全部分类
  • 图纸下载>
  • 教育资料>
  • 专业文献>
  • 应用文书>
  • 行业资料>
  • 生活休闲>
  • 办公材料>
  • 毕业设计>
  • ImageVerifierCode 换一换
    首页 人人文库网 > 资源分类 > DOC文档下载  

    外文翻译--机械设计与制造业.doc

    • 资源ID:96091       资源大小:52.50KB        全文页数:6页
    • 资源格式: DOC        下载积分:5积分
    扫码快捷下载 游客一键下载
    会员登录下载
    微信登录下载
    三方登录下载: 微信开放平台登录 支付宝登录   QQ登录   微博登录  
    二维码
    微信扫一扫登录

    手机扫码下载

    请使用微信 或支付宝 扫码支付

    • 扫码支付后即可登录下载文档,同时代表您同意《人人文库网用户协议》

    • 扫码过程中请勿刷新、关闭本页面,否则会导致文档资源下载失败

    • 支付成功后,可再次使用当前微信或支付宝扫码免费下载本资源,无需再次付费

    账号:
    密码:
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源(1积分=1元)下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    外文翻译--机械设计与制造业.doc

    MachineDesignandmanufacturingMachinedesignistheapplicationofscienceandtechnologytodeviseneworimprovedproductsforthepurposeofsatisfyinghumanneedsItisavastfieldofengineeringtechnologywhichnotonlyconcernsitselfwiththeoriginalconceptionoftheproductintermofitssize,shapeandconstrictiondetails,butalsoconsidersthevariousfactorsinvolvedinthemanufacture,marketinganduseoftheproduct.Peoplewhoperformthevariousfunctionsofmachinedesignaretypicallycalleddesigners,ordesignengineers.MachinedesignisbasicallyacreativeactivityHowever,inadditiontobeinginnovative,adesignengineermustalsohaveasolidbackgroundintheareasofmechanicaldrawing,kinematics,dynamics,materialsengineering,strengthofmaterialsandmanufacturingprocesses.Asstatedpreviously,thepurposeofmachinedesignistoproduceaproductwhichwillserveaneedformanInventions,discoveriesandscientificknowledgebythemselvesdonotnecessarilybenefitpeople;onlyiftheyareincorporatedintoadesignedproductwillabenefitbederivedItshouldberecognized,therefore,thatahumanneedmustbeidentifiedbeforeaparticularproductisdesignedMachinedesignshouldbeconsideredtobeanopportunitytouseinnovativetalentstoenvisionadesignofaproduct,toanalyzethesystemandthenmakesoundjudgmentsonhowtheproductistobemanufacturedItisimportanttounderstandthefundamentalsofengineeringratherthanmemorizemerefactsandequationsTherearenofactsorequationswhichalonecanbeusedtoprovideallthecorrectdecisionsrequiredtoproduceagooddesignOntheotherhand,anycalculationsmademustbedonewiththeutmostcareandprecision.Forexample,ifadecimalpointismisplaced,anotherwiseacceptabledesignmaynotfunctionGooddesignsrequiretryingnewideasandbeingwillingtotakeacertainamountofrisk,knowingthatifthenewideadoesnotworktheexistingmethodcanbereinstatedThusadesignermusthavepatience,sincethereisnoassuranceofsuccessforthetimeandeffortexpendedCreatingacompletelynewdesigngenerallyrequiresthatmanyoldandwell-establishedmethodsbethnistasideThisisnoteasysincemanypeopleclingtofamiliarideas,techniquesandattitudesAdesignengineershouldconstantlysearchforwaystoimproveanexistingproductandmustdecidewhatold,provenconceptsshouldbeusedandwhatnew,untriedideasshouldbeincorporatedNewdesignsgenerallyhave“bugs”orunforeseenproblemswhichmustbeworkedoutbeforethesuperiorcharacteristicsofthenewdesignscanbeenjoyedThusthereisachanceforasuperiorproduct,butonlyathigherriskItshouldbeemphasizedthat,ifadesigndoesnotwarrantradicalnewmethods,suchmethodsshouldnotbeappliedmerelyforthesakeofchangeDuringthebeginningstagesofdesign,creativityshouldbeallowedtoflourishwithoutagreatnumberofconstraintsEventhoughmanyimpracticalideasmayarise,itisusuallyeasytoeliminatethemintheearlystagesofdesignbeforefirmdetailsrequiredbymanufacturingInthisway,innovativeideasarenotinhibitedQuiteoften,morethanonedesignisdeveloped,uptothepointwheretheycanbecomparedagainsteachotherItisentirelypossiblethatthedesignwhichisultimatelyacceptedwilluseideasadstinginoneoftherejecteddesignsthatdidnotshowasmuchoverallpromise.PsychologistsfrequentlytalkabouttryingtofitpeopletothemachinesoperateIt,isessentiallytheresponsibilitythedesignengineertostrivetofitmachinestopeopleThisisnotaneasytask,sincethereisreallynoaveragepersonforwhichcertainoperatingdimensionsandproceduresareoptimumAnotherimportantpointwhichshouldberecognizedisthatadesignengineermustbeabletocommunicateideastootherpeopleifthey,tobeincorporatedInitially,thedesignermustcommunicateapreliminarydesigntogetmanagementapprovalThisisusuallydonebyverbaldiscussionsinconjunctionwithdrawinglayoutsandwrittenmaterialTocommunicateeffectively,thefollowingquestionsmustbeanswered:(1)Doesthedesignreallyserveahumanneed?(2)Willitbecompetitivewithexistingproductsofrivalcompanies?(3)Isiteconomicaltoproduce?(4)Canitbereadilymaintained?(5)Willitsellandmakeaprofit?Onlytimewillprovidethetrueanswerstotheprecedingquestions,buttheproductshouldbedesigned,manufacturedandmarketedonlywithinitialaffirmativeanswersThedesignengineeralsomustcommunicatethefinalizeddesigntomanufacturingthroughtheuseofdetailandassemblydrawingsQuiteoften,aproblemwilloccurduringthemanufacturingcycleItmaybethatachangeisrequiredinthedimensioningortolerancingofapartsothatitcanbemorereadilyproducedThisfallsinthecategoryofengineeringchangeswhichmustbeapprovedbythedesignengineersothattheproductfunctionwillnotbeadverselyaffectedInothercases,adeficiencyinthedesignmayappearduringassemblyortestingjustpriortoshippingTheserealitiessimplybearoutthefactthatdesignisalivingprocessThereisalwaysabetterwaytodoitandthedesignershouldconstantlystrivetowardsfundingthatbetterwayInthedevelopmentofmanufacturingplans,computer-aidedprocessplanningcanbethepreparationofthousandsofprocessesandprocessingProcesstoselectthebestprocessingprogramIntheworkshop,thedistributedintelligenceofthisformtothemicroprocessortocontrolmachinetools,automaticcontrolforloadingandunloadingmaterialsPreparationandworkshoponthecurrentstateofthecollectionofinformations.However,theseseparatereformsarestillfarfromenough.WhatweneedisacommonsoftwareEndedbeforetheterminalfromalltheautomationcontrolsystem.Ingeneral,thecomputercanprovideawiderangeofintegrated,timelyandaccurateinformationcanbeministriestoimproveDoorsbetweentheexchangeandcommunication,theintroductionofmorestringentcontrol,andoftentoenhancetheoverallqualityofthewholesystemAndefficiency.Forexample,toimproveexchangeandcommunicationwillmeanthatthedesignofbettermanufacturability.NCprogrammersandprocessequipmentdesignershavetheopportunitytoputforwardtheviewsofproductdesigners,andviceversa.Thuscanreducethetechnicalaspectsofthechange,andthenecessarychangesforthosewhocanmoreeffectivelytodealwith.Thecomputercannotonlychangemorequicklyonthedetailsofthemake,butalsocanchangethenthedatatotellusers.Theuseofup-to-datedataontheproductioncontrolprocesscanbeapointofordertodevelopbetterandmoreefficientproductionProgress.Thus,expensiveequipmentcanbebetterutilizedtoimprovethepartsintheproductionprocessofthedeliveryofEfficiencyandreducethecostoftheproductsProductqualitycanbeimproved.Forexample,notonlycanimprovethedesignaccuracy,butalsoenablesqualityassurancePermittheuseofdesigndatadepartments,toavoiderrorsduetoamisunderstanding.Canmakepeoplebetteraccomplishtheirwork.Byavoidingthelengthycalculationandwritethework-Thisinformationisnottofindthetime-thecomputernotonlymakespeopleworkmoreeffectively,butalsoLiberatethemtodoonlytheworkofmancando:tothinkcreatively.ComputerIntegratedManufacturingwillalsoattractnewtalentintothemanufacturingsector.Wastoattracttalentedpeoplefromthereasonforthisisthattheyhopethatamodern,technologicallyadvancedenvironment.Inmanufacturingengineering,CAD/CAMequipmenttoreducetheprocessdesign,NCprogrammingandthepreparationoftheProcessRequired.Moreover,speeduptheresponsespeed,whichwilleventuallybeoutsidethecurrentprocessingoftheworkcommissionedfrominternalstafftocomplete.机械设计与制造业机械设计是一门通过设计新产品或者改进老产品来满足人类需求的应用技术科学。它是一个广阔的工程技术领域,不仅要研究产品在尺寸、形状和详细结构等方面的基本构思,还要考虑产品在制造、销售和使用等方面的有关问题。进行各种机械设计工作的人员通常被称为设计人员或者设计工程师。机械设计是一项创造性的工作。设计工程师不仅在工作上要有创新性,还必须在机械制图、运动学、动力学、工程材料、材料力学和机械制造工艺等方面具有深厚的基础知识。如前面所述,机械设计的目的是生产能够满足人类需求的产品。发明、发现和科学知识本身并不一定能给人类带来益处,只有当它们被用在产品上才能产生效益。因而,应该认识到在一个特定产品进行设计之前,必须先确定人们是否需要这种产品。应当把机械设计看成是设计人员运用创造性的才能进行产品设计、系统分析和制订产品的制造工艺的一个良机。掌握工程基础知识要比熟记一些数据和公式更为重要。仅仅使用数据和公式是不足以在一个好的设计中做出所需的全部决定。另一方面,应该认真精确地进行所有运算。例如,即使将一个小数点的位置放错,也会使正确的设计变成错误的。一个好的设计人员应该勇于提出新的想法,而且愿意承担一定的风险,当新的方法不适用时,就恢复采用原来的方法。因此,设计人员必须要有耐心,因为所花费的时间和努力并不能保证带来成功。一个全新的设计,要求摒弃许多陈旧的,为人们所熟知的方法。由于许多人易于墨守成规,这样做并不是一件容易的事情。一位设计工程师应该不断地探索改进现有产品的办法,在此过程中应该认真选择原有的、经过验证的设计原理,将其与未经过验证的新观念结合起来。新设计本身会有许多缺陷和未能预料的问题发生,只有当这些缺陷和问题被解决之后,才能体现出新产品的优越性。因此,一个性能优越的产品诞生的同时,也伴随着较高的风险。应该强调的是,如果设计本身不要求采用全新的方法,就没有必要仅仅为了变革的目的而采用新办法。在设计的初始阶段,应该允许设计人员不受各种约束,充分发挥创造性。即使产生了许多不切合实际的想法,也会在设计的早期,即绘制生产图纸之前被改正掉。只有这样,才不至于堵塞创新的思路。通常要提出几套设计方案,然后加以比较。很有可能在最后选定的方案中,采用了某些未被接受的方案中的一些想法。

    注意事项

    本文(外文翻译--机械设计与制造业.doc)为本站会员(上***)主动上传,人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知人人文库网(点击联系客服),我们立即给予删除!

    温馨提示:如果因为网速或其他原因下载失败请重新下载,重复下载不扣分。




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    网站客服QQ:2881952447     

    copyright@ 2020-2025  renrendoc.com 人人文库版权所有   联系电话:400-852-1180

    备案号:蜀ICP备2022000484号-2       经营许可证: 川B2-20220663       公网安备川公网安备: 51019002004831号

    本站为文档C2C交易模式,即用户上传的文档直接被用户下载,本站只是中间服务平台,本站所有文档下载所得的收益归上传人(含作者)所有。人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。若文档所含内容侵犯了您的版权或隐私,请立即通知人人文库网,我们立即给予删除!