数控10专业英语试卷1112(2)

浙江水利水电专科学校2011－2012 学年第 2 学期期 末 考试（查）试题 A 卷第 1 页 共 4 页考试科目：数控专业英语 考试时间：120分钟 试卷总分:100分 考试方式： 开卷考 考生系： 机械电子工程系一、将下列带有下划线加粗的专业英文单词或短语翻译成中文 （每空1分，共35分）1. CNC lathe ( ) is primarily used for rotating body workpieces ( )with turning ( ), boring ( ), drilling ( ), reaming ( ), tapping ( ) and other machining ( ) processes.2. CNC lathes are classified as horizontal CNC lathe ( ) and vertical CNC lathe ( ).3. The main components of CNC lathe are headstock ( ), bed ( ),guide way ( ), turret ( ), tailstock ( ), feeding mechanism ( ), operation panel ( ) and auxiliary system etc.4.The main components of CNC machining center ( ) are bed, saddle ( ), column ( ), table ( ), servo system ( ), spindle ( ), tool changer ( ) and the machine control unit ( ).5. The servo system, which consists of servo drive motor ( ), ball screw ( ) and position feedback encoder ( ), provides fast, accurate movement and positioning ( )of the X, Y , Z axis.6. Job description is : CNC programming ( ) , program debugging ( ),CNC equipment adjusting ( ), maintaining ( ), technical service ( ) and support for users ( ).二、将下列缩略词的全称写出，并将之翻译成中文（每空2分，共10分） 例：CPU Central Process Unit (中央处理器)CAD ( ) CAM( )CNC ( ) MCU ( )ROM ( )三、以下给出了各词前缀或后缀的意思，猜测单词词义（每空1分，共10分）micro- : “微型”microprocessor kilo-:“千”kilowattover-“超过”overload mid-“中, 中部”midway-ware: “件（部件）”software multi-:“多的”multifunctional–able: 构成形容词后缀reliable -er: “...者,...物” manufacturer–tion：构成名词后缀production -en：动词化后缀harden四、英译中：（每小题3分，共15分）①Firstly , the information required for machining workpiece is recorded by the program that is stored （存储）in some media when CNC lathe work, and then the program is input to the numerical control device(装置，设备).②Machining centers have been defined（定义）as multifunctional CNC machines with automatic（自动的）tool-changing capabilities（能力）and tool magazine（刀库）.③Machining centers have the ability（能力）to perform drilling, reaming, boring, milling, contouring and threading operations on a single machine eliminates（消除）the need for a number of individual（独立的，个体的）machines, thus reducing the cost of equipment and labor （劳动力）requirements .④To start Pro/E on a computer, there may be an icon(图标) on your desktop（桌面）or you may have to find it in the start menu（菜单）at the bottom left of the screen on the Windows taskbar （任务栏）.⑤In this lesson, we will create（创建）a rectangular（长方形的）part with a circular（圆形的）hole and a rectangular slot（槽）.解答：五、阅读理解：（本题共30分）The Computer Numerical Control Machine ToolsMany different kinds of computer numerical control machine tools have been developed in order to meet(满足) the modern industry’s need since World War II. And this makes it possible and easier for people to do various（各种不同的）difficult machining which couldn’t be done before. Also, it is quite clear that CNC machine tools can often do the jobs more effectively（有效的）than common machines.The following CNC machine tools are mainly used in today’s industry production.According to different machining needs, the general CNC machine tools can also be categorized （把…归类）as CNC lathe, CNC miller, CNC borer, CNC grinder, and CNC driller, and so on.C lathe It is one of the most widely used modern CNC machine tools in today’s industry production. It is designed to cut off the useless parts of material from stock（毛坯，棒料）which is clamped（夹紧）in a rotating （旋转的）spindle（主轴）.Most metal（金属）cutting is done with a sharp（锋利的）single point（单刃）cutting tool. Modern CNC lathes use turrets to hold and move cutting tools. The turret is also used to quickly index（抓取）an old tool out and a new tool into its cutting position. Each tool position on the turret is numbered for identifying（识别）the tool it holds. Tools can be mounted on the face of the turret as well as on its sides. Upon receiving a tool change command（指令）from the MCU, the turret moves to a safe tool change location（位置）and indexes the old tool out and a new tool in. It then proceeds to（继续）the proper coordinates（坐标）programmed for cutting the part with the new tool. It should be stated（指出）that for turning centers with programmable（可编程的）tailstocks, the tailstock might first have to be moved back before a tool change is executed（执行）. The machine tool is equipped with front and rear（后面）turrets, which cause（引起）it possible to execute cutting operations（操作）simultaneously（同时）from the top and the bottom of the work.C milling machine tools There are two kinds of the machines. They are the vertical （竖直的）CNC miller and the horizontal（水平的）CNC miller, which are widely used to machine surface（平面）and contour（外轮廓）machining. They can be used to machine some parts with very complex（复杂的）shape. And they can also do drilling（钻削）, reaming（绞孔）, boring （镗孔）and counter-boring（扩孔）. It must be understood that because of lacking（缺乏）the function （功能）of exchanging（交换）tools, the CNC milling machine tools can’t do the hole machining with high quality requirements.C machining center It is the CNC machine tool that has the function of cutting tools changing automatically（自动地）and is capable of performing multiple（多样的, 多重的）machining operations such as drilling, boring, milling and so on. In the development of machining centers, the horizontal(水平的) machining center came from the milling machine and the vertical（垂直的，直立的）machining center from the drilling machine. It is obvious thatmachining centers save substantial（充足的，大量的）production time and costs by minimizing（使减到最少）the number and complexity（复杂性）of fixtures（夹具）and reducing the number of work stations( 加工设备).1.根据课文判断正误（6分）( ) (1) In the development of machining centers, the horizontal machining center came from the milling machine and the vertical machining center from the drilling machine.( ) (2) Because of lacking the function of exchanging tools, the CNC milling machine tools can’t do the hole machining with high quality requirements.( ) (3) A turret on a CNC lathe is used to quickly change tools when required.( ) (4) The CNC milling machine is one of the most widely used modern CNC machine tools in today’s industry production.( ) (5) The CNC milling machine save substantial production time and costs by minimizing the number and complexity of fixtures and reducing the number of work stations.（）（6）It is quite clear that CNC machine tools can often do the jobs more ineffectively than common machines2. 理解文章内容，翻译以下专业词汇(12分)（1）转塔刀架（2）铣床（3）数控机床（4）tailstock （5）CNC borer (6) turning centers3. 理解文章内容，将文中加粗的句子译成中文(12分)（1）And this makes it possible and easier for people to do various difficult machining which couldn’t be done before.(2) It is designed to cut off the useless parts of material from stock which is clamped ina rotating spindle(3) It is the CNC machine tool that has the function of cutting tools changing automatically and is capable of performing multiple machining operations such as drilling, boring, milling and so on.。