机械工程专业英语教程第2版Lesson 35.ppt

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1、Lesson 35 Coordinate Measuring MachineTerminologyText tour 1/23/20231机械工程专业英语教程Terminology1/23/20232机械工程专业英语教程Coordinate measuring machine(CMM)三坐标测量机 Linear motor 直线电动机机械工程专业英语教程1/23/2023Digitize To put(data,for example)into digital form将（例如数据）数字化Turbine blade 涡轮机叶片 User-friendlyEasy to use or learn

2、 to use用户界面友好的，用户容易掌握使用的:容易（学会）使用的 3A coordinate measuring machine(CMM)is typically used to generate 3-D points from the surface of a part.Its digitizing a part in three dimensions.However,it is often used to make 2-D measurements such as measuring the center and radius of a circle in a plane,or eve

3、n one-dimensional measurements such as determining the distance between two points.Typically,CMMs are configured to measure in Cartesian coordinates.11.configure 意为“为特定设备或用途而进行的设计”。全句可译为：通常，三坐标测量机是专门为在直角坐标系内进行测量而设计的。机械工程专业英语教程1/23/2023Text tour4CMMs are manual or automatic.In manual mode,the CMM is

4、moved by the user.An automatic CMM is typically actuated byelectric drives(using ballscrews or linear motors).22.electric drive 意为“电气传动，又称电力拖动。生产过程中，以电动机作为原动机来带动生产机械，并按所给定的规律运动的电气设备”。全句可译为：一个自动化的三坐标测量机通常采用电气传动的方式（通过滚珠丝杠或采用直线电动机）。机械工程专业英语教程1/23/20235As shown in Figure 1,articulated arm CMMs look very

5、 much like six-degree-of-freedom robots,and are almost always manually driven.Hybrid CMMs are a cross between articulated arm systems and traditional CMMs.They may have servo assist for making measurements.Figure 1 Articulated arm CMM机械工程专业英语教程1/23/20236New user-friendly software that allows the CMM

6、 and probe to be accurately,quickly,and easily calibrated has also made the CMM more accurate and easier to use.3 3.user-friendly意为“用户界面友好的，用户容易掌握使用的”。全句可译为：新的用户界面友好的软件可以对三坐标测量机及其测量头进行精确、快速和容易的校准工作，这也使得三坐标测量机更为精确和更容易使用。As a result,looser tolerances can be used on the system hardware,and the resultin

7、g errors(as long as they are highly repeatable)are eliminated in software.44.looser tolerance 意为“比较大的公差”。全句可译为：结果是，系统硬件的公差可以比较大，只要可重复性很高，其所产生的误差可应通过软件予以消除。机械工程专业英语教程1/23/20237A controlled environment is important for efficient CMM operation.CMMs can operate well on the shop floor if they are equippe

8、d with thermal compensation capabilities that correct for temperature changes from standard temperature(20C).55.thermal compensation意为“热补偿”。全句可译为：如果三坐标测量机具有热补偿能力，能够在偏离标准温度(20oC)时，对由于温度变化带来的影响进行修正，三坐标测量机就可以很好地在车间内工作。8机械工程专业英语教程1/23/2023A stationary bridge-type CMM is shown in Figure 2,and the accuracy of this kind of CMM is usually better than that of a mobile articulated arm CMM.Figure 2 Bridge-type CMM 9机械工程专业英语教程1/23/2023