机电英语课件 Chapter 1-2Mechanical Drawing

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...,the...Itusuallytakes...hours/daysto...adrawing....needtofocuson...It’salsoimportantfor....tobecareful/persistent.Words&ExpressionsReadingassembly:/əˈsembli/；n.装配；集会；集合；议会component:/kəmˈpoʊnənt/；n.&adj.；n.组成部分；成分；组件；adj.组成的；构成的dimension:/dɪˈmenʃn/；n.&v.；n.方面；尺寸；规模；维度；v.标注尺寸tolerance:/ˈtɑːlərəns/；n.公差；宽容；容忍；忍耐finish:/ˈfɪnɪʃ/；v.&n.；v.完成；结束；磨光；n.结尾；结束；饰面machinist:/məˈʃiːnɪst/；n.机械师；机工；机械安装修理工fabricator:/ˈfæbrɪkeɪtər/；n.制造者；加工厂；造假者diameter:/daɪˈæmɪtər/；n.直径toothprofile:/tuːθˈproʊfaɪl/；n.齿形；齿廓shaft:/ʃæft/；n.轴；杆；柄；矛orientation:/ˌɔːriənˈteɪʃn/；n.方向；定向；定位；适应exploded:/ɪkˈsploʊdɪd/；adj.爆炸了的；分解的；被开除的automobile:/ˈɔːtəməbiːl/；n.汽车engine:/ˈendʒɪn/；n.发动机；引擎；机车；火车头piston:/ˈpɪstən/；n.活塞crankshaft:/ˈkræŋkʃæ