机械专业英语课件10.ppt

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1、单词复习：Turning/milling/grindingToolworkpieceMetalcuttingLathe/planerHybridrigidity上一课回顾1Lesson10Lathes车床重点词汇：1.enginelathe普通车床2.productionandmaintenanceshops生产和维修车间3.carriagen.溜板四轮马车4.piston活塞5.dismountn.v.卸下，拆除，拆卸6.setup调整，准备，安装7.forgingn.锻件a.锻造的8.workon对…进行加工9.endworkingandside-working端面和侧面加工2Recog

2、nizeLathe3Paragraph1Lathesarewidelyusedinindustrytoproduceallkindofmachinedparts.Somearegeneral-purpose(通用的)machines,andothersareusedtoperformhighlyspecializedoperations.车床在工业生产中被广泛用来加工各种类型的机械零件。一些车床是通用机床，而另一些车床则被用来完成某些专门工序的加工任务。4Paragraph2:EngineLathes普通车床Enginelathes,ofcoursearegeneral-purposemac

3、hinesusedinproductionandmaintenanceshopsallovertheworld.普通车床是全世界的生产车间和维修车间里广泛使用的通用机床。Sizesrangefromsmallbenchmodelstohugeheavy-duty(重型的)pieceofequipment.它的尺寸范围很大，从小型的台式车床(benchmodels)到巨大的重型车床。5Manyofthelargerlathescomeequippedwithattachmentsnotcommonlyfoundintheordinaryshop,suchasautomaticstopsfort

4、hecarriage.许多大型的车床配备在普通车间中通常看不到的附件，例如，溜板的自动挡块。6Paragraph3:TracerorDuplicatingLathes仿形/靠模车床Thetracerorduplicatinglatheisdesignedtoproduceirregularlyshapedpartsautomatically.Thebasicoperationofthislatheisasfollows:Atemplate(模板、模型)ofeitheraflatorthree-dimensionalshapeisplacedinaholder.靠模车床或仿形车床（tracer

5、orduplicatinglathe）设计用来对形状不规则的零件进行自动加工。这种车床的基本操作如下：在夹持装置上安装平面或立体形状的样板。7Aguiderorpointer(仿形指)thenmovesalongthisshapeanditsmovementcontrolsthatofthecuttingtool.然后，导向触头或指针沿着它的外形移动，从而控制切削刀具的运动。Theduplicationmayincludeasquareortapered(锥形的)shoulder(台肩),grooves,tapers(锥体),andcontours.仿形加工可以包括方形或锥形轴肩、各种槽、锥

6、体或轮廓。8Workssuchasmotorshafts,spindles,pistons,rods,caraxles,turbineshafts,andavarietyofotherobjectscanbeturnedusingthistypeoflathe.像电机的轴、主轴、活塞(pistons)、连杆、汽车轴、汽轮机轴和其他很多种类的工件都可以采用这种车床来进行加工。9Paragraph4:TurretLathes转塔车床ATurretlatheisbasicallysimilartoanenginelatheexceptthattheconventionaltoolpostisrep

7、lacedwithahexagonalturret,whichcanberotatedaroundaverticalaxisasrequired.转塔车床与普通车床基本上一样，只是将传统的刀架换成了六角形的转塔，该六角刀架可以根据需要绕铅直方向的轴转动。10Appropriatetoolsaremountedonthesixsidesoftheturret.Thelengthofeachtoolissoadj