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机电专业英语PPT课件

机电专业英语PPT课件
他的价值观念似乎陈旧了。 • immense [i mens] adj.极大的，巨大的
例句：They made an immense improvement in English.
在E英nd语方面他们取得了巨大的进步To。pic Above Next
centrifugal [sen‘trifjugəl] adj.离心的
mass-produced大(批)量生产的
Section II Text
Processes of mechanization have been developing and becoming more complex ev er since the beginning of the Industrial Revo lution at the end of the 18th century.（自从 18世纪末工业革命开始，工业机械化进 程一直在不断地发展，并且变得越来越 复杂。） The current developments of auto matic processes are, however, different from the old ones.（但目前的工业自动化过程 较以前的工业自动化过程有很大的不同）
）
Now people often talk about “feedback” as b
eing an essential factor of the new industrial t
echniques, upon which is based an automatic
self-regulating system and by virtue of which
And in many, though not all, instances th e element of control is so great that me chanization displaces muscle, “automat ion” displaces brain as well.（尽管不 是所有的情况，但在大多数情况下， 控制元件依然发挥着强大的力量， 机械化已经代替了手工劳动，而自 动化代替了脑力劳动。

机电一体化 完整ppt课件

机电一体化 完整ppt课件
2.机电技术完全融合形成新型机电一体化产品
生产机械中的激光快速成形机；信息机械中的传真机、打印机、复印机；检测机 械中的CT（计算机断层扫描诊断装置）扫描诊断仪、扫描隧道显微镜等。
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C650卧式车床外形图 1— 主轴变速箱 2—溜板与刀架 3—尾座 4—床身 5—丝杠
6—光杠 7—溜板箱 8—进给箱 9—挂轮箱
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效益分析
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第二节 机电一体化构成要素件
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二、相关技术
1. 机械技术
2.
机电一体化的机械产品与传统的机械产品的
区别在于：机械结构更简单、机械功能更强、性
1 23 4
图7-18 双螺母垫片调隙式结构 1、2-单螺母 3-螺母座 4-调整垫片
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(b)螺纹调隙式（图7-20）其中一 个螺母的外端有凸缘而另一个螺母 的外端没有凸缘而制有螺纹，它伸 出套筒外，并用两个圆螺母固定着。 旋转圆螺母时，即可消除间隙，并 产生预拉紧力，调整好后再用另一 个圆螺母把它锁紧。
3）运动平稳，无爬行现象，传动精度高。
4）运动具有可逆性，可以从旋转运动转换为直线运动，也可以从直线运动转换为旋转运 动，即丝杠和螺母都可以作为主动件。
5）磨损小，使用寿命长。
6）制造工艺复杂。滚珠丝杠和螺母等元件的加工精度要求高，表面粗糙度也要求高，故 制造成本高。
7）不能自锁。特别是对于垂直丝杠，由于自重惯力的作用，下降时当传动切断后，不 能立刻停止运动，故常需添加制动装置。

机电专业英语课件Lesson 1

机电专业英语课件Lesson 1

End
Topic
Above
汉
Next
Section II Text
Early in the 1950s, two important engineering discoveries changed th e image of the electronic-computer field. These discoveries were the mag netic core memory and Transistor-Circuit Element. These technical disco veries quickly found their way into new models of digital computers. In the 1960s, efforts to design and develop the fastest possible compu ter with the greatest capacity reached a turning point with the LARC mac hine. The LARC had a base memory of 98000 words and multiplied in 1 0 μs. The trend during the 1970s was, to some extent, moving away from ve ry powerful, single-purpose computers and toward a larger range of appli cations for cheaper computer systems. Most continuous-process manufac turing, such as petroleum refining and electrical-power distribution syste ms then used computers of smaller capability for controlling and regulati ng their jobs.

《机电专业英语》 教学课件课件 Unit 24 Flexible Manufacturing

《机电专业英语》 教学课件课件 Unit 24 Flexible Manufacturing
A flexible manufacturing system (FMS) is a highly automated GT machine cell, consisting of a group of processing workstations (usually CNC machine tools), interconnected an automated material handling and storage system. The reason the FMS is a called flexible is that it is capable of processing a variety of different part styles simultaneously at the various workstations, and the mix of part styles and quantities of production can be adjusted in response to changing patterns demanded. The FMS is most suited for the mid-variety, midvolume production range.
1. Computer control. 2. Automated materials handling capability. 3. Tool handling capability.
Text & Translation
Flexible manufacturing was first introduced in the mid-1960s when the British firm Moils Ltd. developed its System 24. System 24 is a real FMS. However, it was doomed from the outset because automation, integration, and computer control technology had not yet been developed to the point where they could properly support the system. With the emergence of sophisticated computer control technology in the late 1970s and 1980s, flexible manufacturing became a viable concept. In the United States, manufacturers of automobiles, trucks, and tractors are the pioneers in adopting flexible manufacturing.

机电一体化技术 PPT

机电一体化技术 PPT
（6） 减少在制品库存量 （ 7） 投资高 、风险大 ，开发周期长 、管理水平要求高。
FMS动画.wmv
示教盒： 可手动有线遥控机器人
“机电一体化 ” (mechatronics)一词在20世纪70年代起源于日 本 。它取英文单词mechanics (机械学)的前半部和electronics (电子学)的后半部分拼成一个新词 ， 即机械电子学或机电一体化
(8) 航空 、航天 、国防用武器装备等。
4. 电子化汽车
70年代前后 ， 实现了充电电压调整器和点火装置的电路集成化 并研制成功了燃油喷射的电子控制装置。
70年代后期 ，美国和日本先后开发了汽车发动机控制系统 ，用 于计算最佳点火时间 ，控制执行其点火动作 ，大大提高了汽车的 性能。
80年代以来 ，相继开发出了： 电子控制化油器 、 电子控制自动 变速器 、 电子刹车控制装置 、防滑装置 、 自动稳速控制装置 、 电 子仪表 、 电子自动刮水器 、排气污染的电子控制器 、集中报警系 统 、发动机诊断系统等。
(1) 工业 ，如：数控机床 、机器人 、 自动生产设备 、FMS 、CIMS 无人化工厂等；
(2) 运输 、包装及工程 ， 如： 电子化汽车 、数控包装机械 、数控 运输机械及工程机械设备等； (3) 储存销售 ， 如： 自动仓库 、 自动称量 、销售及现金处理等；
(4) 社会服务性 ， 如： 自动化办公机械 、医疗与环保及公共服务 自动化设备 、文教 、娱乐用机电一体化产品等； (5) 家用 ， 如： 洗衣机 、炊事自动化机械等； (6) 科研及过程控制 ， 如： 测试设备 、信息处理设备等； (7) 农 、林 、牧 、渔 ， 如： 现代农业生产控制装置等；
计算机与信 息处理技术
机电一体化技术

《机电专业英语》 教学课件课件 Unit 15 Mechatronics

《机电专业英语》 教学课件课件 Unit 15 Mechatronics

Text & Translation
Mechatronics is an integrated comprehensive study of intelligent and high performance electromechanical system (mechanisms and processes)，intelligent and motion control through the use of advanced microprocessors and DSPs，power electronics and ICs，design and optimization，modeling and simulation，analysis and virtual prototyping，etc. Integrated multidisciplinary features are approaching quickly，and mechatronics，which integrates electrical， mechanical，and computer engineering areas(Fig.15.1).
New Words & Expressions
benchmark [′bentʃma:k] n. 基准，标准 entreaty [in′tri:ti] n. 恳求，请求 evolutionary [i:və′lu:ʃnəri] adj. 发展的，演化的 DSP (digital signal processing) 数字信号处理 IC (integrated circuit) 集成电路 consensus [kən′sensəs] n. 一致 augment [ɔ:g′ment] v. 增加，扩大 unify [′ju:nifai] v. 成为一体，统一 cornerstone [′kɔ:nəstəun] n. 基石，基础

机电专业英语ppt

Helical gears can also be used to connect nonparallel, non-intersecting shafts at any angle to one another. Ninety degrees is the commonest angle at which such gears are used.
Chapter One Lesson One
Mechanics Components
Gears
Spur and helical gears.
A gear having tooth elements that are straight and parallel to its axis is known as a spur gear. A spur pair can be used to connect parallel shafts only. Parallel shafts, however, can also be connected by gears of another type, and a spur gear can be mated with a gear of a different type (Fig. 1-1).
The thrust problem can be overcome by cutting two sets of opposed helical teeth on the same blank. Depending on the method of manufacture, the gear may be of the continuous-tooth herringbone variety or a double-helical gear with a space between the two halves to permit the cutting tool to run out. Doublehelical gears are well suited for the efficient transmission of power at high speeds.

Unit-19-Hydraulic-Basic-Circuits-机电专业英语-图文课件

pneumatic [nju:'mæ tik] adj. 风动的， 气动的 decompression [͵di:kəm'preʃən] n. 降压， 减压， 释
放 regenerative [ri'dʒenəreitiv] adj. 再生的， 新生的 torque [tɔ:k] n. 转矩，力矩，扭矩 lubricator ['lu:brikeitə] n. 润滑剂, 加油器 modification [͵mɔdifi'keiʃən] n. 改装, 修订, 更改 customize ['kʌstəmaiz] v. 定制; 定做; 自定义 neutral ['nju:trəl] adj. 中立的, 中性的; 不确定的 n. 中
位 psi (pound per square inch) 气压单位（1 psi=6.89
kPa）
New Words & Expressions
cylinder ['silində] n. 气筒; 液压缸, 气缸 welder ['weldə] n. 焊工; 电焊机 parallel ['pærəlel] n. 平行, 平行线 solenoid ['səulinɔid] n. 螺线管 energize ['enədʒaiz] v. 给与…能量、电压, 使活跃 actuate ['æ ktjueit] v. 开动（机器）, 驱动 compensate ['kɔmpenseit] v. 补偿, 赔偿 traverse ['trævə:s] v. 横越, 转动, 在轴上旋转 momentarily ['məumən͵terili] adv. 短暂地, 临时地 initiate [i'niʃieit] v. 开始; 创始

教学课件：《新核心高职行业英语——机电英语》


Part IV Task-driven Practice
Task Description The whole task is divided into three steps. Step 1 is about briefly introducing yourself, your unique strength and problems. Step 2 centers on talking about your major and related work skills and capabilities. Step 3 is to describe your future job you’re expecting and how to achieve it.
Part IV Task-driven Practice
Expressions used for giving a presentation. Read aloud and try to memorize & use some.
◆Getting people’s attention ① May I have your attention, please? ② Good morning/afternoon, everyone! I’m …from… ③ Ladies and gentlemen, attention please!
——Product Inspection & Certification
❖Unit 7 Have You Ever Heard of G-Marketing?
——Product Advertising & Marketing
❖Unit 8 How Do You Transport Your Goods?

机电专业英语讲义.ppt.Convertor

机电专业英语复习资料一 1.1 Bipolar junction transistorsToday, industrial electronic systems employseveral devices that are described by the term transistor. Each type of transistor has different characteristics and operational conditions that are used to distinguish it from others.每种晶体管都有区别于其它种类的特征和工作环境。

In the first part of this discussion, we are concerned with the . Structurally, this transistor is described as bipolar because it has two different current-carrier polarities.首先探讨双极型晶体管。

从结构上看，这种晶体管被称为双极是因为它具有两种不同的电流载流子电极。

Holes are positive current carriers, whereas electrons are negative current carriers.空穴是正的载流子，电子是负的电流载流子。

Two distinct kinds of semiconductor crystals are connected together by a common element. 两种截然不同的半导体晶体通过公共元件连接在一起。

The structure of this device is similar to that of two diodes connected back to back, with one crystal being common to both junctions. The center material is usually made thinner than the two outside pieces. 该器件的结构类似于背靠背连接的两个二极管的结构，一个晶体同时属于两个结。

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While their intended purpose is to measure the gap between two surfaces, such as the electrodes of spark plug.
Unit 1
Passage A
Follower Rest (跟刀架) A follower rest is similar to a steady rest, but is attached to and travels with the
Drilling is one of the most commonly performed operations on the lathe, so you will need a good collection of decent-quality drills. When you buy your lathe, don't forget to order a tailstock chuck and arbor to hold the drills.
Unit 1
Passage A
Center Drills (中心钻) Center drills are stiff, stubby little drills used to start holes in the end
of work-piece. If you try to drill a hole in a work-piece without using a center drill，you will find that the drill will most likely wobble off center and not drill straight into the work-piece.
When using a faceplate, always ensure that the work is securely clamped down and balanced by some offsetting piece of metal, if necessary. (Figure 1-7)
1
Passage A
Digital Caliper (数显卡尺) Digital calipers are used just like dial calipers for making inside and outside
measurements accurate to one thousandth of an inch but have a direct LCD digital readout. On a dial caliper you first read the major dimension to the nearest tenth of an inch from the slide and mentally add to that the minor dimension from the dial to the nearest thousandth. This becomes second nature after a while, but still introduces opportunities to make a mistake. A digital caliper reads out the full dimension on the display, so is pretty foolproof, as long as it is properly zeroed. You can also switch between metric and inch modes as needed.
Unit 1
Passage A
Chip Brushes (清屑刷) Chip brushes are inexpensive paint brushes that are handy for all kinds of
uses around the shop. We’re not sure where the name originated, but we don‘t think it had anything to do with removing chips; nevertheless this is one of the uses these brushes excel at. They are also ideal to clean the packing grease off a new lathe or mill. Incidentally, experienced machinists will tell you always to use a brush, rather than compressed air, to clean the chips from machine tools as compressed air will drive the chips deep into the recesses of the machine. Chip brushes are the preferred way to clean up chips.
Poor quality drills are easy to find, but they are truly a waste of money. That‘s not to say that you need to buy top quality industrial drills. It’s not always easy to tell a good drill bit from a poor one just by looking and, of course, its even harder if all you have is a picture on a web site or in a catalog. Generally, though, the lowest priced drill sets are the ones to stay away from.
长春汽车工业高等专科学校
Unit 1 Passage A
Lathe Accessories
Brass Round Stock (铜质圆料) Brass is a nice material to work with, though somewhat expensive compared with aluminum or steel. It can add a nice touch of contrasting color to a project that will be displayed. The alloy most often used for home shop work is 360.
After mounting the faceplate on the spindle, it is standard practice for faceplates to take a light one-time facing cut to ensure that the face of the plate is square with the lathe. Cast iron dust is very harmful to breathe, so I strongly recommend wearing a dust mask during this operation and until you have vacuumed up the resulting dust.
Dial Caliper (带表卡尺)
Digital Caliper (数显卡尺)
Unit 1
Passage A
Drill Rod (钻杆) Drill rod is a steel alloy with a shiny silvery color and good machining
properties. Unlike other raw materials, which may vary from the nominal diameter by + .010 or more, drill rod is surface ground to within about .001 of the nominal diameter. While not classified as a stainless steel, drill rod is moderately resistant to rust - more, at least, than ordinary carbon steels. It is great for applications such as shafts and axles.
机电一体化专业英语（第2版）
English for Electromechanical Integration
（II）
Contents
Unit 1 Unit 2 Unit 3 Unit 4 Unit 5
Unit 6 Unit 7 Unit 8 Unit 9 Unit 10
Unit 1
Lathe Accessories
Unit 1
Passage A
Feeler Gages (塞尺) Feeler gages are sets of thin steel strips of accurate thicknesses, typically
from .001 up to about .040 or so (Figure 1-8). There are typically about 20 to 40 separate strips in a set, joined together by a bolt that runs through a hole in the end of each gage. Each gage has the thickness marked on it, in both inches and mm in the example below. All of the leaves fold up into the handle to protect them from bending when they're not in use.