中职-数控技术应用专业英语完整版课件全套ppt教程(最新).ppt

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1、数控技术应用专业英语数控技术应用专业英语n2. Key Sentences 重点句子重点句子n NC machines have many advantages over conventional machines; n 计算机数控机床和传统机床相比具有很多优点；n over：介词，超过，越过n The scrap rate is significantly reduced because of the precision of the CNC machine and lesser operator impact;nundesirable adj不合乎需要的ncomplexity n复杂性nd

2、ash v划线nboundary n界线，范围nknit v编织 nfabric n织物njet n喷气(流) nin-depth adj深入的，彻底的nmilling machine 铣床 ndrilling machine 钻床ngrinding n磨削ngrinding machine 磨床nboring machine 镗床n2. Key Sentences 重点句子重点句子nNumerical control is used to translate a b1ueprint，drawing，or graph，which has been converted to digital fo

3、rmat, to pen motions on an automatic drafting machine.n 数控技术用于把已转化为数字格式的设计图、草图或图表变成自动绘图机上绘图笔的运动。n translate A to B：把A变为B，把A转化为B；n convert A to B：把A转化成B。nAlthough the size, accuracy, and configuration of NC drafting equipment varies among manufacturers, it is not uncommon to find machines capable of

4、producing drawings 1.5m2m in size with an accuracy of 0.02.n 虽然各厂家的数控绘图设备的尺寸、精度和结构有所不同，但总可以找到能绘制规格为1.5m 2m、精度为0.02mm图纸的绘图仪。n it是形式主语，代表 to find(不定式短语)。n be not uncommon是双重否定的用法，其语气比肯定句强一些。nMany sophisticated systems incorporate a digitizing feature which enables a machine operator to generate comput

5、er-compatible data from existing drawings.n 许多精密的系统都具有数字化功能，它能使操作人员用现有的图纸生成计算机兼容的数据。n1Words 词汇词汇nlathe n. 车床； vt. 用车床加工nwork-piece n. 毛坯， 材料nturret n. 转塔刀架nrigidly adv. 坚硬地，严格地，刚性地naccurately adv. 正确地，准确地，精密地nrear n. 后面, 背后； adj. 后面的，背面的，后方的 nbed n. 床身 nslant v. （使）倾斜，歪向; n. 倾斜ncarriage n. 托板 nsaddl

6、e n. 床鞍ncross slide 横向拖板 napron n. 拖板箱ntailstock n. 尾架nMCU（Machine Control Unit） 加工控制单元nmagazine n. 刀库n2. Key Sentences 重点句子重点句子n The CNC lathe is a machine tool that can remove material from work-piece, which is clamped and rotated about an axis.n 数控车床是一种能将工件毛坯上多余材料切除掉的机床, 毛坯将被安装在主轴上并绕主轴旋转。n that c

7、an remove 是限定性定语从句，修饰 a machine tool。n which is clamped是非限定性定语从句，修饰 work-piece。n The turret also has automatic tool-changing capability. It is used to quickly take an old tool out and a new tool into its cutting position.n 转塔刀架有自动换刀功能，用来快速将旧刀换出并将新刀换至其切削位置。n it 代替 the turret。n used to do ： 被用来做。n A f

8、ront turret is built to move tools from below the spindle centerline up to the work. A rear turret, on the other hand, moves tools from above the spindle centerline down to the work.n 前刀架将刀具从主轴轴线之下上移至工件, 而后刀架则将刀具从主轴轴线之上下移至工件。n built 在这里表示在结构上的用途。n on the other hand，另一方面 。n Lathe bed is usually made

9、of gray or nodular cast iron to damp vibrations and is made by casting.n 为了衰减振动，车床床身通常是由灰铸铁或者球墨铸铁经铸造而制成。n “is usually made of gray or nodular cast iron to damp vibrations” 与 “is made by casting”是并列关系。“to damp vibrations”表示目的。nhorizontal plane 水平面nprimary adj. 基本的nrespond v. 相应，有反应npositive adj. 正的nn

10、egative adj. 负的nopposite adj. 相反的ndesignate v . 指定 , 指派n2. Key Sentences 重点句子重点句子n The system will respond to a command to move the spindle along the +X or +Y axis by moving the table in the opposite direction, -X or Y axis.n 这个系统响应这样一种指令，主轴沿着+X或者+Y方向的运动要通过工作台沿着相反方向即-X或者-Y方向的运动来实现。n respond to：响应n t

11、o move the spindle 作定语，修饰 a command。n2. Key Sentences 重点句子重点句子nLesson 4 Basic Lathe Operationsn1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n The drill is usually mounted in a drill chuck or held in a bushing and fed into the rotating work.n 钻头通常安装在钻头卡盘或轴衬中，并向旋转的工件进给。n and fed into the rotating work：并列成分，表

12、示进一步的动作。n Boring can be used to make a more accurately size and true hole as well as to create internal tapers and contours.n 镗孔可以使孔的尺寸更精确、圆度更高，此外还能加工内部锥度和轮廓。n true hole：接近理论上的圆，所以叫真圆。n The tool is usually fed into the material at a cut angle of 29 in a direction perpendicular to the parts centerlin

13、e and at a feed rate equal to the thread pitch.n 刀具向材料进刀时，其切削角通常为 29，进给方向与工件的中心线垂直，进给率等于螺距。n perpendicular to the parts centerline 形容词短语，修饰 direction。也可变为定语从句 which is perpendicular to the parts centerline。nLesson 5 Cutting Speeds and Feeds for Lathe Operationsn1.Words 词汇词汇ncircumference n. 圆周， 周围，

14、周线ncircumferential adj. 环绕的，周围的nhandbook n. 手册ngeometry n. 几何形状nrecommend vt. 推荐，介绍n2. Key Sentences 重点句子重点句子n For lathe operations, tool speed is defined as the rate at which a point on the circumference of the work passes the cutting tool.n 对于车削加工来说，刀具速度定义为工件边缘上一点经过刀具的线速度。n defined as：定义作。n at whi

15、ch a point on the circumference of the work passes the cutting tool. 定语从句，修饰 the rate。n Tool feed is the rate at which the tool advances into the work per revolution of the work. n 刀具进给率是指工件每转一周，刀具相对工件的进给速率。n Therefore, it is generally recommended to use higher feeds for roughing operations and fine

16、r feeds for finishing operations.n 因此，一般情况下，我们常常使用较大的进给量进行粗加工，而使用较小的进给量进行精加工。n higher feeds for roughing operations and finer feeds for finishing operations：是并列短语，做 use 的宾语。n Again, recommended values for feeds, which can be taken as guidelines, are found in handbooks and in information booklets pro

17、vided by cutting tool manufacturers.n 再一次说明，从手册中可以得到的加工制造者推荐的进给量值，仅作为参考。n which can be taken as guidelines，非限定性定语从句。n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n Right-handed cutting tools are usually fed from right to left in the direction of spindle axis. The reverse state is practiced for left-handed

18、tools.n 右手刀具通常沿着主轴轴线方向从右向左进刀, 左手刀具正好相反。n from right to left：从右到左。n Single point turning and facing tools must have specific angles at their cutting ends to ensure longer tool life and cutting efficiency.n 用于车外园和端面的单点刀具的刀刃必须有一个特定的角度, 这样可以延长刀具的寿命并提高切削效率。n ensure：保证。 tool life：刀具寿命。n1.Words 词汇词汇n2. Key

19、 Sentences 重点句子重点句子nLesson 2 Setting up Tool Nose Radius Compensation n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n Motion in the G40,G41 or G42 block must be greater than twice the value of the tool nose radius. Following this rule，we will ensure that overcutting o

20、r undercutting will not occur.n G40，G41 或 G42 程序段中的运动 ( 行程 ) 必须大于刀尖圆弧半径的两倍。这样就保证不会发生过切或切削不足现象。n Following：遵循，依照n1.Words 词汇词汇nimaginary adj . 假想的ntangent adj . 正切的，相切的，切线的nramp n. 斜面nspecify v. 指定，详细说明ndigit n. 数字n2. Key Sentences 重点句子重点句子nUNIT 5 NC PROGRAMMINGnLesson 1 Coordinate System for NC Machi

21、nesn1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n In a NC system, each axis of motion is equipped with a separate driving source that replaces the hand wheel of the conventional machine.n 在一个数控系统中，每个运动轴都配备了一个单独的驱动源，以此来代替传统机床上的手轮。n此句中“that replaces the hand wheel of the conventional machine”作定语从句修饰“a separ

22、ate driving source”，单独的驱动源。nOn a work-piece-rotating machine, such as a lathe, the Z-axis is parallel to the spindle, and the positive motion moves the tool away from the work-piece. n 在工件旋转的机床上，如车床，Z 轴是平行于主轴的，其正方向是刀具远离工件的方向。 n 此句中，“a work-piece-rotating machine”实际是指机床的主运动是由工件旋转而形成的，下一段中的“a tool-rot

23、ating machine”指机床的主运动是由刀具旋转而形成的。n On a vertical milling machine, the positive X-axis points to the right when the programmer is facing the machine.n 在立式铣床上，正X轴方向是当程序员面向机床时，指向右边的方向。n1.Words 词汇词汇ncontrol functions 控制功能npreparatory functions 准备功能ninterpolation n . 插补ncircular interpolation plane 圆弧插补平面

24、nabsolute adj. 绝对的nincremental adj. 增量的ncutter compensation 刀具补偿nparameter n . 参数ncycle function 循环功能nfixed cycle function 固定循环功能ncoolant control 冷却控制nmist n . 雾状npallet n . 托盘nmiscellaneous control 辅助控制nlocation n . 定位nMCU 中央控制单元nG-code G代码，准备功能指令nM-code M代码，辅助功能指令nS-code S代码，主轴转速指令nT-code T代码，刀具指令

25、nF-code F代码，进给速度指令nR-code R代码 nCW clock wise 顺时针方向nCCW counter clock wise 逆时针方向n2. Key Sentences 重点句子重点句子n The words specify which units, which interpolator, absolute or incremental programming, which circular interpolation plane, cutter compensation, and so on.n 指明程序段的单位，插补方式，绝对或增量编程，什么样的圆弧插补面，刀具补偿

26、等等。n 此句中“which units, which interpolator, absolute or incremental programming, which circular interpolation plane, cutter compensation, and so on. ”为连续并列宾语。nLesson 3 NC Part Programmingn1.Words 词汇词汇nLesson 4 Training Programmersn1.Words 词汇词汇nprogrammer n . 程序设计员，程序编制员nskillful adj. 有技巧的，熟练的nvital ad

27、j. 生动的，不可缺少的；要害，命脉 nscarce adj. 缺乏的，不足的，稀有的，罕见的，难得的nshortage n . 缺少，不足，缺乏，缺陷nassn = association n . 协会，学会nbooklet n . 小册子，目录单nsensitivity n . 灵敏，敏感度nwork hold 工件夹持nfixture n . 夹具，固定物，定位器nspatial adj. 空间的，立体的nvisualization n . 形象化，想象nalgebraic adj. 代数的ntrigonometric adj. 三角学的，三角学ncalculus n . 微积分，计算，

28、演算nobservant adj. 严格遵守的，留心的，观察力敏锐的nblueprint n . （晒）蓝图，设计图， v .（订）计划nhands-on 实习的，亲身试验的nprerequisite v. 先决条件，必要的；n . 前提nwaive v . 放弃，推迟考虑n2. Key Sentences 重点句子重点句子nThis reflects not only the general shortage of experienced people in the metalworking industries but also the increasing demand for prog

29、rammers as industry turns more and more to the use of numerically controlled machines to increase the capability, versatility, and productivity of manufacturing. n 这不仅表明了在机械加工行业普遍缺少有经验的人员，而且也表明随着越来越多的工厂通过应用数控机床来增加生产能力、通用性和生产率，对编程人员的需求也日益增多。n turn to: 求助，变成n 此句中 “to increase the capability, versatili

30、ty, and productivity of manufacturing.”作目的状语。n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子n1.Words 词汇词汇n2. Key Sentences 重点句子重点句子谢 谢 ！