机电一体化专业英语课件.ppt

1、机电一体化专业英语机电一体化专业英语Catalog 1.Unit1 Engineering Drawing 2.Unit 2 Mechanical Properties of Metals 3.Unit3 Mechanical Parts 4.Unit4 Tolerance and Fits 5.Unit5 Machine Tools 6.Unit6 Machining 7.Unit7 Basic knowledge of fitter 8.Unit8 Welding 9.Unit9 Mechatronics 10.Unit10 CNC MachinesUnit1 Engineering Dr

2、awing-Text 1.Engineering drawing covers a detailed structure of a single part.There are many types of engineering drawings.Unit1 Engineering Drawing-Text 2.But the general arrangement of all these parts is shown in an assembly drawing.Unit1 Engineering Drawing-Text 3.Assembly drawings consist of the

3、 following features:1).Dimensions:2).Internal parts:3).Parts list:Unit1 Engineering Drawing-Text 4.For example,the column of“Quantity”means the quantity of the parts,the column of“Material”is used for components that are being made in the company.And the“Remarks”column is useful for specifying a man

4、ufactures part number.Unit1 Engineering Drawing-Words and Expressions arrangement reindmnt n.排列，安排 assembly sembli n.集合，装配 feature fi:t n.特色，特征 dimension dimenn n.尺寸，尺度 view vju:n.视图 list list n.目录，列表，数据清单 identify aidentifai vt.识别，鉴别，确定Unit1 Engineering Drawing-Words and Expressions manufacture mnj

5、ufkt n.制造者，制造商 consist of 由组成 engineering drawing 工程制图 assembly drawing 装配图 sectional view 截面图，断面图，剖视图 parts list 零件清单Unit1 Engineering Drawing-Synchronous reading ()1.Before you start your engineering drawing,the first thing is to make best use of the space.()2.There are at least five rules you sho

6、uld obey before you producing an engineering drawing.()3.Every engineering drawing must include an information box.()4.The Scale is very important and it have effect on the final size of the product.()5.The same one to finish the drawing and checking is allowed.Unit 2 Mechanical Properties of Metals

7、-Text 1.Metals have played an important part in mans activities for many centuries.Wood and stone are both older in use,and later they have been supplanted by metals to a considerable extent.Unit 2 Mechanical Properties of Metals-Text 2.Metals have a great importance because of their useful properti

8、es.Metals are much stronger and harder than wood.Metal is not so brittle as stone.Strength,hardness and plasticity of metals are the properties which make metals very useful for industry.It is possible to find some plastic wood but it is much softer than many metals have a combination of these three

9、 useful properties.Unit 2 Mechanical Properties of Metals-Text 3.Metals are very important in industry.All machines have metal parts and some of them consist only of metal parts.Unit 2 Mechanical Properties of Metals-Words and Expressions century senturi n.世纪 supplant spla:nt v.代替，取代 considerable ke

10、nsiderebl a.相当大(或多)的 extent ikstent n.程度 brittle britl a.易碎的，脆的 strength stre n.力，力量，强度 plasticity plstisiti n.可塑性，成形性Unit 2 Mechanical Properties of Metals-Words and Expressions combination kmbineien n.结合 part pa:t n.零件，部件 consist knsistv.由构成，由组成 play part 起作用 to a considerable extent 在极大的程度上 becau

11、se of 因为 not soas 没有那样Unit 2 Mechanical Properties of Metals-Synchronous reading ()1.The material of metal can to classified into three categories.()2.Aluminum is lightweight and softer than steel.()3.Stainless steel is a relatively hard material and tends to shorten the life of the cutting tools.(4

12、.Typical carbon steel can be subjected to various heat treatments.()5.The brass has not sogood soldering properties.Unit3 Mechanical Parts-Text 1.Machine elements are elementary mechanical parts used as building blocks for the construction of a device,apparatus or machinery.2.The most common example

13、 of machine elements is a gear.Gear is a toothed wheel.The rotation of a gear on a hub or shaft drives other gears rotating faster or slower depending upon the number of tooth on the basic wheels.Unit3 Mechanical Parts-Text 3.The material of a gear establishes its strength and hardness of its surfac

14、e determining its resistance to wear.Knowledge of the forces on the gear makes possible the determination of its size.Unit3 Mechanical Parts-Text 4.Changes in its shape allow modifications in its use.These applications have developed into many standard forms of gears such as spur,bevel,helical and w

15、orm gears.Unit3 Mechanical Parts-Text 5.Other fundamental machine elements are shafts,bearings and screws mainly.Unit3 Mechanical Parts-Words and Expressions mechanical miknikl a.机械的 block blk n.部件，块料 device divais n.装置，设备 apparatus preits n.器械，仪器 machinery mi:nri n.机械，机器 tooth tu:n.牙齿 wheel hwi:l n

16、.轮，机轮 rotation rten n.旋转，转动 hub hb n.衬套，（轮）毂Unit3 Mechanical Parts-Words and Expressions modification mdfken n.更改，修改 standard stndd n.标准，规范 bevel bevl n.斜角 helical helikl a.螺旋形的 worm w:m n.蜗杆 machine element 机械零件 resistance to wear 耐磨性Unit3 Mechanical Parts-Words and Expressions spur gear 正齿轮 bevel

17、gear 伞齿轮 helical gear 螺旋齿轮，斜齿轮 worm gear 蜗轮 journal bearing 轴颈轴承 ball bearing 球轴承 roller nearing滚柱轴承Unit3 Mechanical Parts Synchronous reading ()1.A machine is combined by individual machine elements such as nuts,bolts,springs,gears,cams and shafts and so on.()2.The most common example of a machine

18、element is a nut.()3.The rotation of this gear drives other gears that may rotate faster or slower,depending upon the number of teeth on the basic wheels.()4.All machine elements are completely standardized.()5.In the automotive industry fasteners,bearing bushings,chains and connecting rods are stan

19、dardized.Unit4 Tolerance and Fits-Text 1.Among a variety of small tools used in workshops,Hammers wrenches,wrenches,hacksaws and files may be considered the most useful.Unit4 Tolerance and Fits-Text 2.Hammers are used to drive nails into wood and to beat metal into shape.They are usually made with w

20、ooden handles and steel heads.The end of the head opposite the striking face is called the peen.It is often rounded or wedge-shaped.Unit4 Tolerance and Fits-Text 3.Hacksaw is a saw used to cut metal and file is a hand tool consisting of a steel blade with small cutting teeth on its surface.Unit4 Tol

21、erance and Fits-Text 4.Rule,vernier calliper and micrometer screw gauge are the measures commonly used in workshop.Rule,is a strip of metal marked with units of length.It can be used to measure the length,width,depth and height of work-pieces.Unit4 Tolerance and Fits-Words and Expressions handle hnd

22、l n.柄、把手 peen pi:n n.锤尖 strike straik v.打、击 wedge wed n.楔、劈 spanner spn n.扳手、扳头 jaw d:n.虎钳牙、爪 serrated seretd a.锯齿状的 tap tp n.丝攻 bar b:n.条、棒、杆Unit4 Tolerance and Fits-Words and Expressions rule ru:l n.尺子、刻度尺 strip strip n.条、带 marked m:kt a.有标记的、打上记号的 length le n.长度、长 width wid n.宽度、阔度 depth dep n.深度

23、、厚度 height hait n.高度、高 instrument instrumnt n.仪器 reading ri:di,ridi n.读数、仪器指示数Unit4 Tolerance and Fits-Words and Expressions thickness iknis n.厚、稠密 sharpen:pn v.磨快、削尖 accompany kmpni v.陪同、伴随 attached to 附属性 as the saying goes 常言道 take care of 照顾 mechanical drawing 机械制图 a great deal 大量Unit4 Tolerance

24、 and Fits-Synchronous reading ()1.Good measuring instruments are keys to high volume production.()2.Today,measuring tools are not so important for most machining operations.()3.All distance can be measured by a calliper.()4.A calliper can measure the inside of a hole.()5.Some callipers also have a d

25、ial or digital readout instead.Unit5 Machine Tools-Text 1.The five basic techniques of machining metals include drilling and boring,turning,milling,planning and grinding.Variations of the five basic techniques are employed to meet special situations.Unit5 Machine Tools-Text 2.Drilling consists of cu

26、tting a round hole by means of a rotating drill.Boring,on the other hand,involves the finishing of a hole already drilled or cored by means of a rotating,offset and single-point tool.On some boring machines,the tool is stationary and the work revolves,while the reverse is true.Unit5 Machine Tools-Te

27、xt 3.Turning is the process of shaping or cutting objects by using a lathe.The piece of metal to be machined on a lathe is rotated and the cutting tool is advanced against it.Unit5 Machine Tools-Text 4.Milling consists of machining a piece of metal by bringing it into contact with a rotating cutting

28、 tool which has multiple cutting-edges.The milling tools are used for cutting grooves,slots,etc.in metal objects or for smoothing metal surfaces.Unit5 Machine Tools-Text Milling machine and milling cuttersUnit5 Machine Tools-Text Milling machine and milling cuttersUnit5 Machine Tools-Text Grinding c

29、onsists of shaping a piece of work by bringing it into contact with a rotating abrasive wheel.The process is often used for the final finishing to close dimensions of a part that has been heat-treated to make it very hard.Unit5 Machine Tools-Text Unit5 Machine ToolsWords and Expressions turning t:n

30、n.车削工艺，车削 planing plein n.刨 variation vere()n n.变化，变动 finish fini v.最后加工，完成 core k:v.定心 offset fset v.抵销，偏置 stationary steinri adj.不动的，静止的 revolve rivlv v.旋转、绕转Unit5 Machine ToolsWords and Expressions edge ed n.刀口，利刃 groove ru:v n.槽，沟 slot slt n.狭孔，缝，狭槽 planer plein n.刨床 shaper eip n.牛头刨床 abrasive b

31、resv adj.磨料的，研磨的 distortion dst:n n.变形 single-point tool 单刃刀具 boring machine镗床Unit5 Machine ToolsWords and Expressions lie in 存在于 back and forth 来回地 differ from 与不同 result from 由产生 heat treatment 热处理 contact with 与接触 similar to 与相似；类似于Unit5 Machine ToolsSynchronous reading ()1.Which machine tool is

32、to be used usually depends upon the type of machining required.()2.Lathe can be used for the production of precision cylindrical surfaces.()3.Surface grinding machines can be used for the reduction of steel blocks and plates to the required thickness.()4.Milling machines can be used for machining sl

33、ot.()5.without ancillary equipment such as power saws,drilling machines toolpost grinders,hardening and polishing facilities,etc.,no toolroom would be complete.Unit6 Machining-Text Primary processes and Secondary Processes 1.Manufacturing processes can be classified into two general groups.They are

34、known as primary processes and secondary processes.Unit6 Machining-Text 2.Primary processes can convert raw materials into shapes,such as casting,powder metallurgy,forging,and molding,etc.Unit6 Machining-Text 3.The methods of metal removal can be classified into three categories.They are chip remova

35、l,chipless removal,and metal removal by heat.Unit6 Machining-Text 4.The most widely used of these methods is chip removal.It employs a hardened cutting tool to form(and remove)the chip.Unit6 Machining-Text As described in Fig.,drilling,reaming,turning,and grinding are typical cylindrical surface mac

36、hining methods.Unit6 Machining-Words and Expressions primary praimri adj.初步的，初级的 secondary sekndri adj.次级的 manufacturing mnjfktr n.制造 adj.制造业的 classify klsifai vt.分类 turn t:n vt.车削，使加工成形 raw r:adj.未加工的 forging f:di n.锻造 molding muldi n.塑造，铸型Unit6 Machining-Words and Expressions die dai n.钢型，硬模，冲模 ca

37、vity kviti n.坑，孔穴 compressive kmpresiv adj.有压缩力的 hammer-like hmlaik adj.铁锤样的 remove rimu:v vt.去掉，消除，切掉 work-piece w:kpi:s n.工件，加工件 achieve ti:v vt.完成，达到，获得 configuration knfijurein n.外型，轮廓，形状Unit6 Machining-Words and Expressions hardened h:dnd adj.变硬的，坚毅的 cylindrical slndrkl adj.圆柱体的 shaping eipi n.

38、刨光，刨削 grinding raindi n.磨 milling mili n.铣 primary processes 粗加工 secondary Processes 精加工 convert into 把转变为 remove from 从移除 be classified by 被归类为Unit6 Machining-Synchronous reading ()1.The most important of machine tools used in industry are lathe and grinding machines.()2.Drilling machines are commo

39、nly called the father of the entire machine tool family.()3.For turning operations,the lathe uses a single point cutting tool.()4.Milling can produce many kinds of profiles including hole.()5.Grinding makes use of abrasive particles to do the cutting.Unit7 Basic knowledge of fitter-Benchwork and Fit

40、ters 1.Bench-work is a category of jobs.It is concerned with the use of hand tools and bench machines.Its main manipulation is to grind,carve,mold,paint,assemble,and repair something,etc Unit7 Basic knowledge of fitter-Benchwork and Fitters 2.Fitters primary tools are vices,files and hammers.In Fig.

41、,movable vices with anvil and tiltable vices are given.Examples of files and hammers are described in Fig.Unit7 Basic knowledge of fitter-Benchwork and Fitters Files and hammers Unit7 Basic knowledge of fitter Words and Expressions bench-work bentw:k 在工作台上完成的工作 fitter fit n.（钳工）装配工 category ktiri n.

42、种类，类目 concern kns:n v.涉及，关系到 bench bent n.长凳，条凳，工作台 manipuiation mnipjuleit v.处理，操作，操纵，被操纵 grind raind v.磨（碎），碾（碎），折磨，旋转，挤压 n.苦差事 carve k:v v.刻，雕刻，切开Unit7 Basic knowledge of fitter Words and Expressions worktable w:kteibl n.工作台，（有抽屉的）缝纫机 conveyor knve n.传送者，传播者，传送装置，传送带 complex kmpleks adj.复杂的，合成的，综

43、合的 blueprint blu:print n.蓝图，设计图，计划 follow flu v.&n.跟随，结果是，追随 variety vraiti n.多样化，种类，变种 assume sju:m v.假定，设想，承担，装出，假装 responsibility rispnsbiliti n.责任，责任心，职责Unit7 Basic knowledge of fitter Words and Expressions follow pattern 后续样式 for example 例如 case fitter 家具安装工 hardware assembler 五金器具/硬件装配工 automo

44、bile seat installer 汽车座位安装工 movable vice with anvil 带有铁砧的可移动性台虎钳 tiltable vice 倾斜式的台虎钳Unit7 Basic knowledge of fitter Synchronous reading ()1.Forging is widely used for the manufacture of parts both of steel and brass.()2.Large ingot are now almost always forged with steam hammers instead of hydraul

45、ic presses.()3.Metal can be formed into many shapes by forcing the metal into the impressions in metal dies.()4.The metal is rolled into the form of a sheet or plate when the rollers have no grooves on their surfaces.()5.Hot rolling produces a higher surface finishing sheet and gives it a very exact

46、 size.Unit8 Welding-Text 1.Welding is just one kind of methods of jointing metal articles together.We can joint two metal pieces together by this method.Just as described in Fig.1,there are various kinds of the welding depending on how to give heat:arc welding,resistance welding,gas welding,brazing,

47、solid state welding,and other processes.Unit8 Welding-Text 2.Unit8 Welding-Text 3.An arc welding is used most often as a welding as a welding process of steel material Unit8 Welding-Text 4.For welding of comparatively thin plates,it is easy to handle a gas welding(Fig.).A TIG welding is used for wel

48、ding of stainless steel or aluminum alloy Unit8 Welding-Text 5.soldering is the jointing method similar to the welding.Without melting the material itself,it melts only a solder at a low temperature.And the solder joins to metal materials Unit8 Welding Words and Expressions welding weld n.焊接法 joint

49、dint vt.连接，接合 article :tikl n.文章、物品 arc :k n.弧 brazing n.铜焊（接），钎焊（法），硬钎焊 solid slid n.固体 state steit n.状态、洲 chart t:t n.图，图表，示意图 plate pleit n.金属板Unit8 Welding Words and Expressions soldering sldri n.软焊，锡焊，低温焊接 melt melt vt.融化，熔化 arc welding 电弧焊 resistance welding 电阻焊 gas welding 气焊 solid state weld

50、ing 固态焊 TIG welding(Tungsten-arc Inert-Gas welding)钨极电弧惰性气体保护焊（TIG焊 Unit8 Welding Synchronous reading ()1.The arc welding is a well-used welding method.()2.The arc welding is low speed,so we can see the welding processes.()3.Though the welding is very well,the strength is also not very high.()4.A be