机械工程专业英语课件--L

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1、EnglishforMechanicalEngineering机械工程专业英语常州工学院机电工程学院徐红丽机械工程专业英语预备知识一、预备知识FixtureAfixtureisaworkholdingorsupportdeviceusedinthemanufacturingindustry.Whatmakesafixtureuniqueisthateachonisbuilttofitaparticularpartorshape.Themainpurposeofafixtureistolocateandinso

2、mecasesholdaworkpieceduringeitheramachiningoperationorsomeotherindustrialprocess.Ajigdiffersfromafixtureinthatitguidesthetooltoitscorrectpositioninadditiontolocatingandsupportingtheworkpiece.Lesson32LimitsandTolerances机械工程专业英语预备知识一、预备知识Theprimarypurposesofj

3、igsandfixturesisto:ReducethecostofproductionMaintainconsistentqualityMaximizeefficiencyEnableavarietyofpartstobemadetocorrectspecificationsLesson32LimitsandTolerances机械工程专业英语预备知识一、预备知识GrippersbyZAYTRANareuniversallyapplicable"out-of-the-box".Theuseofthird-g

4、enerationZAYTRANtechnologyandtheselectionofsupertough,corrosiveresistantmaterialsallowtheseproductstoefficientlyserveday-to-dayaswellastough,nearlyimpossiblegripperapplicationsBUTarepricedcompetitivelywithcommodityproducts!ZAYTRANgrippertechnologyprovidespr

5、ecisioninextremeenvironmentssuchascleanrooms,grinderloading,automotive,anddiecasting.Lesson32LimitsandTolerances机械工程专业英语预备知识一、预备知识ZAYTRAN'spatentedhelixsynchronizationsystemfacilitatesextremelylongstrokes. Inaddition,wearisminimizedbecausetheforceandsynchro

6、nizationsystemsareindependent.Lesson32LimitsandTolerances词汇二、词汇机械工程专业英语interchangeable可互换的tolerance公差Lesson32LimitsandTolerances机械工程专业英语Machinepartsaremanufacturedsotheyareinterchangeable.课文分析三、课文分析制造机器零件应使它们具有互换性。Inotherwords,eachpartofamachineormechanismi

7、smadetoacertainsizeandshapesoitwillfitintoanyothermachineormechanisofthesametype.换句话说，每一个机器或机构的零件应制造成具有一定的尺寸和形状以便使之能装入到任何其他同类型的机器或机构中。Lesson32LimitsandTolerances机械工程专业英语Tomakethepartinterchangeable,eachindividualpartmustbemadetoasizethatwillfitthematingpart

8、inthecorrectway.课文分析为了使零件具有互换性，每个零件都必须把它制造成一定尺寸以便将以合适的方式装入到与其相配合的零件中去．Itisnotonlyimpossible,butalsoimpracticaltomakemanypartstoanexactsize.把许多零件制造成精确的尺寸，那不仅是不可能的，而且也是不实际的。Lesson32LimitsandTolerances机械工