机电英语课件 Chapter 1 Mechanical Drawing

MechanicalDrawingCHAPTER1时间：202X.XByLearningObjectives01030204recognizethewordsofbasicsolids,machinepartsanddrawingstalkaboutdrawinginhandandcomputer-aideddrawingelicittheinformationaboutviewsdescribethedifferencesbetweendetaildrawingsandassemblydrawingsLookandSayWarmingUpDLookandMatchA.torusB.coneC.cubeD.cylinderE.prismF.sphere123456WarmingUpDEBFACGeometricShapesObserveandSayWhatbasicsolidscanyoufindfromthispicture?WarmingUpGeometricShapesAnalyseandSayWhatbasicsolidscanyoufindfromthefollowingmachineparts?

screwsgearsbearingspringsnutsWarmingUpGeometricShapesAnalyseandSayWhatbasicsolidscanyoufindfromthefollowingmachineparts?

Icanfindcylindersandconesinscrews.WarmingUpIcanfindcylindersandtorusesingears.Icanfindcylindersinbearings.Icanfindtorusesinsprings.Icanfindcylindersandprismsinnuts.ListenandChoose1.Whichofthefollowingviewsshowstheobjectfromabove?()A.FrontviewB.TopviewC.SideviewD.Rearview2.Inmechanicaldrawing,thesixprojectiveviewsareessentialfor_____.A.artisticcreationB.accuratedesignandmanufacturingC.simpledecorationD.randomrepresentationListeningBBListenandDecide(1)Themainprojectiveviewsinmechanicaldrawingincludetopview,frontviewandsideviewonly.(

)(2)Thefrontviewmainlyshowsthelengthandwidthoftheobject.()(3)Thebottomviewisexactlythesameasthetopview.()(4)Thesideviewincludestheleftsideviewandtherightsideview.(

)(5)Thesesixprojectiveviewsareveryimportantinmechanicalengineering.(

)ListeningFFFTTListenandFillA:Doyouknowaboutthesix(1)____________________inmechanicaldrawing?B:Yeah,thetopview,(2)_____________,andsideviewarethemainones.Thetopviewshowstheobjectfromabove.A:Right.Thefrontviewgivesaclearpictureofthefrontface.Andthesideviewhelpswithunderstandingthelateraldimensions.B:Thenthere’sthe(3)_______________,whichistheoppositeofthetopview.A:True.Andtherearview,whichislikethebacksideoftheobject.B:Andtheleftorright(4)_____________dependingonwhat’sneededforamorecomprehensiveunderstanding.A:Thesesixprojectiveviewstogetherprovidea(5)_____________representationofthemechanicalpart.B:Exactly,theyareessentialforaccuratedesignandmanufacturinginmechanicalengineering.ListeningprincipalviewsfrontviewbottomviewviewscompleteReadaloudinpairsA:Doyouoftendrawbyhandinmechanicaldrawing?B:Yeah,sometimes.Ifinditquiteenjoyable.A:Whatdoyoulikemostaboutit?B:IlikethefreedomtosketchandmakechangeseasilyasIgo.A:True.Butisn’tithardertobesuperaccuratecomparedtousingsoftware?B:Well,ittakesmorepractice.A:Indeed.What’sthefirststepwhenyoustartahand-drawnmechanicaldrawing?B:Iusuallystartwitharoughoutlineoftheshape.SpeakingReadaloudinpairsA:Oh,right.Andthenwhat?B:ThenIaddinthedetailsanddimensionsbitbybit.A:Doyouuseanyspecialpencilsortools?B:Justaregularmechanicalpencilandarulermostly.A:That’ssimpleyeteffective.Itseemshand-drawinginmechanicaldrawinghasitsownuniqueappeal.B:Definitely.SpeakingReadandunderlineA:Doyouoftendrawbyhandinmechanicaldrawing?B:Yeah,sometimes.Ifinditquiteenjoyable.A:Whatdoyoulikemostaboutit?B:IlikethefreedomtosketchandmakechangeseasilyasIgo.A:True.Butisn’tithardertobesuperaccuratecomparedtousingsoftware?B:Well,ittakesmorepractice.A:Indeed.What’sthefirststepwhenyoustartahand-drawnmechanicaldrawing?B:Iusuallystartwitharoughoutlineoftheshape.SpeakingReadandunderlineA:Oh,right.Andthenwhat?B:ThenIaddinthedetailsanddimensionsbitbybit.A:Doyouuseanyspecialpencilsortools?B:Justaregularmechanicalpencilandarulermostly.A:That’ssimpleyeteffective.Itseemshand-drawinginmechanicaldrawinghasitsownuniqueappeal.B:Definitely.SpeakingReadandmakeaconversationA:HaveyouusedCADformechanicaldrawing?B:Yes,Ihave.Itisextremelyuseful.A:Whatdoyoulikeaboutit?B:It’ssopreciseandefficient.Youcanmakechangeseasily.A:True.Anditcancreatereallycomplexdesigns.B:Right.Plus,it’sgreatforsharingfileswithothers.A:Doyouthinkit’sbetterthanhand-drawing?B:Well,itdepends.CADisgreatforaccuracy,buthand-drawinghasitscharm.SpeakingReadandmakeaconversationA:Yeah,Iagree.What’syourfavoritefeatureofCAD?B:Theabilitytorotateandviewthedesignfromdifferentangles.A:That’sreallyhelpful.Itmakesiteasiertounderstandthedesign.A:DoyouthinkCADwillreplacehand-drawingcompletely?B:Noway.Hand-drawingisstillimportantforquicksketchesandideas.A:Agreed.Theybothhavetheirplaceinmechanicaldrawing.B:Definitely.Eachonehasitsownadvantages.SpeakingPracticeS:Mr.Wang,doyourememberwhenwedrewtogetherinmiddleschool?Youusedhand-drawing,andItriedCAD.Somuchfun!T:Ofcourse!So,nowyou’reamechanicaldraftspersontoo.WhatdoyouthinkofCAD?S:Well,CADisgreatforcreatingprecisedrawings.Ifinditreallyefficient.T:That’strue.ButIthinkmanualdrawingisstillimportantforunderstandingthestructure.Andwhenyoudrawbyhand,youcanbetterfeelthelines.S:Iagree.OneofmyfavoritefeaturesofCADisit’seasymakemodifications.IfImakeamistake,Icanjustclickafewbuttonstocorrectit.Butwhendrawingbyhand,Ineedtobeverycareful.T:Exactly.Eachonehasitsownadvantages.S:Yeah.Infact,whenIstartanewproject,Iusehand-drawingtodraftsomebasicideas,andthenuseCADtoimprovethem.T:That’sagreatidea.Also,whetheryou’reusingCADormanualdrawing,youneedtofocusonthedetails.S:Absolutely.Andit’salsoimportantforustobepersistent.Sometimes,adrawingcanbereallydifficult,butwecan’tgiveupeasily.Practicemakesperfect,afterall.T:You’reright.Keepexploringbothhand-drawingandCAD!Words&ExpressionsWarminguptorus:/ˈtɔːrəs/，n.圆环面；环形圆纹曲面；花托；隆凸gear:/ɡɪə(r)/，n.&v.n.齿轮；装置，工具；传动装置；排挡；v.使变速；使调档；使适合；bearing:/ˈbeərɪŋ/，n.轴承；关系；方位；举止spring:/sprɪŋ/，n.&v.n.弹簧；活力；v.使跳起；使爆炸；突然提出；使弹开；跳跃；涌出等nut:/nʌt/，n.螺母；螺帽；坚果；着迷的人，爱好者basic:/ˈbeɪsɪk/，adj.&n.adj.基本的；基础的；n.基础；要素solid:/ˈsɒlɪd/，adj.&n.adj.固体的；实心的；结实的；可靠的；n.固体；立体图形parts:/pɑːts/，n.&v.n.部分；零件；角色；部位（part的复数）；v.分开；使分开；将……分成部分；给（头发）分缝（part的第三人称单数）Words&ExpressionsListeningandSpeakingview:/vjuː/，n.&v.n.观点；视野；风景；看法；v.看待；查看；观看bottom:/ˈbɑːtəm/n.&adj.&v.，n.底部；末端；臀部；adj.底部的；v.到达底部；建立基础rear:/rɪr/n.&adj.&v.n.后面；后方部队；屁股；adj.后方的；后面的；v.饲养；养育；举起；树立projection:/prəˈdʒekʃn/，n.投影；投射；预测；凸出物projective:/prəˈdʒektɪv/，adj.投影的；投射的；射影的object:/ˈɑːbdʒekt/（作名词）；/əbˈdʒekt/（作动词），n.&v.n.物体；目标；对象；宾语；v.反对；提出…作为反对的理由mechanical:/mɪˈkænɪkl/，adj.机械的；力学的；呆板的；无意识的；手工操作的artistic:/ɑːrˈtɪstɪk/，adj.艺术的；有美感的；风雅的；艺术家的accurate:/ˈækjərət/，adj.精确的，准确的；正确无误的manufacturing:/ˌmænjuˈfæktʃərɪŋ/，n.&adj.n.制造业；adj.制造的；制造业的representation:/ˌreprɪzenˈteɪʃn/，n.代表；表现；表示法；陈述lateral:/ˈlætərəl/，adj.&n.adj.侧面的；横向的；旁系的；n.侧部；支线dimension:/dɪˈmenʃn/，n.&v.n.方面；尺寸；次元；容积；v.标尺寸；定规格；在…上标尺寸comprehensive:/ˌkɑːmprɪˈhensɪv/，adj.&n.adj.综合的；广泛的；有理解力的；n.综合学校；专业综合测验sketch:/sketʃ/，n.&v.n.素描；草图；梗概；v.画素描或速写；草拟；概述software:/ˈsɔːftwer/，n.软件appeal:/əˈpiːl/，n.&v.n.呼吁；恳求；上诉；吸引力；v.呼吁；恳求；上诉；有吸引力draftsperson:/ˈdræftspɜːsn/，n.绘图员；制图员efficient:/ɪˈfɪʃnt/，adj.有效率的；有能力的；生效的complex:/ˈkɑːmpleks/（作名词和部分形容词义）；/kəmˈpleks/（作形容词，表复杂义），adj.&n.adj.复杂的；合成的；n.复合体；综合设施；情结file:/faɪl/，n.&v.n.文件；档案；文件夹；锉刀；v.提出；把…归档；用锉刀锉；列队行进charm:/tʃɑːrm/，n.&v.n.魅力；吸引力；魔力；v.使陶醉；行魔法angle:/ˈæŋɡl/，n.&v.n.角度；角；观点；v.斜移；使带角度；钓鱼；谋取rotate:/ˈroʊteɪt/，v.旋转；使旋转；轮流；循环replace:/rɪˈpleɪs/，v.取代；代替；替换；把…放回原处MechanicalDrawingCHAPTER1时间：202X.XLearningObjectives01030204recognizethewordsofbasicsolids,machinepartsanddrawingstalkaboutdrawinginhandandcomputer-aideddrawingelicittheinformationaboutviewsdescribethedifferencesbetweendetaildrawingsandassemblydrawingsReadingDetailDrawingsandAssemblyDrawings Detaildrawingsandassemblydrawingsareessentialcomponentsinthefieldofengineeringandmanufacturing. Detaildrawingsprovidein-depthandpreciseinformationaboutasinglepartorcomponent.Theyshowallthenecessarydimensions,tolerances,surfacefinishes,andotherspecificdetails.Thesedrawingsactasacomprehensiveguideformachinists,fabricators,andotherworkersinvolvedinthemanufacturingprocess.Forexample,intheproductionofamechanicalgear,thedetaildrawingwouldspecifytheexactdiameter,toothprofile,andshaftsize.READINGReadingAssemblydrawings,ontheotherhand,focusonhowdifferentpartscometogethertoformacompleteassemblyorproduct.Theyshowtherelativepositions,orientations,andconnectionsbetweenvariouscomponents.Assemblydrawingsoftenincludeexplodedviews,whichprovideaclearvisualofhoweachpartfitsintothewhole.Inthecaseofanautomobileengine,theassemblydrawingwouldshowhowthepistons,cylinders,crankshaft,andothercomponentsareassembledtoworkinharmony.Bothdetaildrawingsandassemblydrawingsareintegraltothesuccessfuldesign,production,andmaintenanceofmechanicalandengineeringproducts.Theycommunicatethenecessaryinformationtodifferentteamsinvolvedintheproject.READINGReadandChooseREADING1.Whatdodetaildrawingsprovideinformationabout?()A.Acompleteassembly.B.Asinglepartorcomponent.C.Differentteamsinaproject.D.Explodedviews.2.Whatdoassemblydrawingsofteninclude?()A.Specificdetailsofasinglepart.B.Explodedviews.C.Onlydimensionsofcomponents.D.Informationonlyformachinists.3.Whoaredetaildrawingsaguidefor?(

)A.Designersonly.B.Managers.C.Machinists,fabricators,andothermanufacturingworkers.D.Salespeople.BBCReadandDecideREADING1.Detaildrawingsandassemblydrawingsareimportantinengineeringandmanufacturing.2.Detaildrawingsonlyshowthedimensionsofapart.3.Assemblydrawingsfocusonasinglepart.4.Explodedviewsareonlyfoundindetaildrawings.5.Bothdetaildrawingsandassemblydrawingscommunicateinformationtodifferentteams.TFFFTReadandCompleteCompareandcontrasttheinformationprovidedindetaildrawingsandassemblydrawingsintermsoftheirfocusandtheaudiencetheyserve.READINGDetaildrawingsfocusona(1)__________part,providingin-depthinformationsuchasdimensions,tolerances,andsurfacefinishes.Theyaremainlyusedby(2)___________________________________directlyinvolvedinmanufacturingindividualcomponents.Assemblydrawings,however,focusonhow(3)_______partscometogethertoformacompleteproduct.Theyshow(4)_________positions,orientations,andconnections,andofteninclude(5)_____________views.Theyaremoreusefulforassemblers,engineersoverseeingtheoverallproductassembly,andmaintenanceteams.Theformerispart-specific,whilethelatterisaboutthewholeproduct’sassembly.singlemachinists,fabricatorsandotherworkersdistinctrelativeexplodedReadandWriteWRITING1.Athree-dimensionalgeometricshapewithsixsquarefaces.（一种有六个正方形面的三维几何形状）____________2.Asolidgeometricfigurethatisshapedlikeaball.（一种形状像球的立体几何图形）____________3.Amechanicalpartoftenusedwithboltstofastenthingstogether.（一种常与螺栓一起用于将东西固定在一起的机械零件）_________

4.Atypeofprismwherethebasesarecircular.（一种底面是圆形的棱柱）____________5.Ageometricshapethathasacircularbaseandapointedtop.（一种有圆形底面和尖顶的几何形状）____________6.Amechanicalcomponentthatisoftenusedtotransmitmotionorpowerbetweenrotatingshafts.

（一种常用于在旋转轴之间传递运动或动力的机械部件）____________cubespherenutscylinderconegearsReadandWriteWRITING7.Athree-dimensionalshapethatlookslikeadonut(甜甜圈).（一种类似甜甜圈的三维形状）____________8.Amechanicalpartthatprovidessupportandreducesfrictioninarotatingsystem.（一种在旋转系统中提供支撑并减少摩擦的机械部件）_____________9.Acoiledmechanicaldevicethatcanstoreandreleaseenergy.（一种能储存和释放能量的螺旋状机械装置）____________10Asmall,threadedmetalobjectusedtojointhingstogether.（一种用于将东西连接在一起的小型带螺纹的金属物体）__________11.Atypeofgeometricsolidwithflatfacesandstraightedges.（一种具有平面和直边的几何立体类型）____________12Amechanicalpartthatisoftencircularandrotatesaroundanaxis.（一种通常是圆形并绕轴旋转的机械部件）____________torusbearingsspringsscrewsprismgearsReadandFillWRITING1.Thefrontviewofanobjectisalsoknownasthe_____________view.2.Theviewthatshowstheobjectfromaboveiscalledthe________view.3.Whenwelookattheobjectfromtheleftside,wegetthe_______view.4.Theviewseenfromtherightsideoftheobjectisthe________view.5.Lookingattheobjectfromunderneathgivesusthe__________view.6.Theviewthatshowsthebackoftheobjectisthe__________view.principaltopleftrightbottomrearPartA:BasicVocabulary(基础词汇)ReadandFillWRITING1.Inthetopview,wecanseethelayoutoftheobject’s_________(top/bottom)surface.2.Theleftviewhelpsusunderstandtheobject’s__________(left/right)sideprofile.3.Whenlookingattherightview,wefocusontheobject’s__________(left/right)sidedetails.4.Thebottomviewrevealstheshapeanddetailsoftheobject’s____________(top/bottom)part.5.Therearviewprovidesinformationabouttheobject’s_________(front/back)sidethatisnotvisiblefromotherviews.topleftrightbottombackPartB:DescribingViews(描述视图)ReadandCompleteWRITINGcomputeraideddrawing;drawup;assemblydrawing;principalviews;consistof;drawinginhand;views,sectionsandcuts;detaildrawing;basicsolid;standforInmechanicaldesign,theprocessofcreatingtechnicaldrawingsisofgreatimportance.Technicaldrawingsusually(1)______________differentelementstoaccuratelyrepresentanobjectoramechanicalpart.Forexample,an(2)__________________________isatypeofdrawingthatshowshowdifferentpartsareputtogether.Itoftencontainsmultiple(3)_______________________________suchasfrontview,topview,andsideview,whicharealsoknownas(4)______________________.consistofassemblydrawingviews,sectionsandcutsprincipalviewsReadandCompleteWRITINGcomputeraideddrawing;drawup;assemblydrawing;principalviews;consistof;drawinginhand;views,sectionsandcuts;detaildrawing;basicsolid;standforWhenwetalkaboutdetailedrepresentationofaspecificpart,weusea(5)____________________.Thiskindofdrawingprovidesin-depthinformationaboutthepart'sshape,size,andotherdetails.Andforcreatingthesedrawings,sometimeswerelyonadvancedsoftwarelike(6)_______________________________(CADforshort),whichhelpsdesignerstocreateandmodifydrawingsmoreefficiently.Beforefinalizingadrawing,designersmayneedto(7)____________adraftfirst.Theyconsidervariousfactorsandmakeadjustmentsaccordingtotheactualrequirements.Duringthisprocess,theyneedtoshowdifferentformsoftheobject,including(8)______________,topresentacomprehensiveunderstandingoftheobject’sstructure.detaildrawingcomputeraideddrawingdrawupbasicsolidTalkandPracticePRACTICETalkaboutthefollowingscenariosinseveralsentencesbyusingthesentencepatternsgiven.TalkandPracticePRACTICEYoumayuse：CADisgreatfor...Ifindit...Oneofmyfavoritefeaturesof...is...Drawinginhandisstillimportantfor...Eachonehasitsownadvantages.Practicemakesperfect.Themore.