机械专业英语(课堂PPT)
head
.
head 15
Flat
Dog
Conical
Round
Cup
Figure 2.16 Alternative screw points.
2.2.6 Selection of Screwed Fasteners
.
3
Figure 2.1 Machine elements are the building blocks of most machines
.
4
2.2 Fastenings 2.2.1 Introduction
A fastener is a device used to connect or join two or more components.
A power screw, also known as a leadscrew (or lead screw) or translation screw, is a device used in machinery to change angular motion into linear motion, and, usually, to transmit power.
is the ball screw.
Figure 2.10 Ball screws.
.
12
2.2.4 Bolts, Studs, Nuts and Plain Washer
1. Bolts
2. Studs
Figure 2.11 Bolts and screws.
Figure 2.12 Studs.
The importance of fasteners in a machine
.
5
2.2.2 Thread Terminology
(a) Right-hand thread.
(b) Left-hand thread.
Figure 2.2 Screw threads
.
6
Figure 2.3 Specialist terminology used for describing threads.
Traditional forms of fastening include nuts, bolts, screws and rivets.
They are frequently used and most of them have been standardized with their shapes and sizes.
Part 2: Machine Elements and Mechanisms
.
1
2.1 Introduction
Machine elements
Machine elements refer to an elementary component of a machine.
They include:
90。 Slotted countersunk
Slotted
Slotted
Square
round head cheese head head
Slotted Slotted Slotted Phillips Hexagon
fillister instrument head head socket
head
Figure. 2.9 A worm-gear screw jack .
.
10
The advantages of a leadscrew are:
• Large load carrying capability • Compact • Simple to design • Easy to manufacture; no specialized machinery is required • Large mechanical advantage • Precise and accurate linear motion • Smooth, quiet, and low maintenance • Minimal number of parts •Most are self-locking
.
2
Control components such as buttons, switches, indicators, sensors, actuators and computer controllers.
Machine elements are basic mechanical parts anbuilding blocks of most machines.
.
13
3. Nuts
4. Washers
Figure 2.13 Standard nuts.
Figure 2.14 Washers.
.
14
2.2.5 Alternative Screw Heads and End Points
Figure 2.15 Alternative screw heads.
structural components such as bearings, axles, keys, fasteners, seals, and lubricants.
Mechanisms such as gear trains, belt or chain drives, linkages, cam and follower systems, including brakes and clutches
The disadvantages are that most are not very
efficient. Leadscrew efficiency is typically
between 25 and 70%.
11
A higher performing but more expensive alternative
.
7
2.2.3 Thread Forms
1. Metric threads
2. Acme threads
3. Square thread
.
8
4. Buttress threads
5. Pipe thread
Basic pipe thread with 55○ angle.
.
9
2.2.4 Power Screw
合集下载
《机械类专业英语》课件
Skimming
This skill allows readers to quickly scan through the text to get a general understanding of the content It is often used to identify key information or main ideas
Learning significance and purpose
Learning significance and purpose
Learning significance: Mastering mechanical English is of great significance for enhancing personal competitiveness, broadening international perspectives, and promoting academic exchanges.
PPT courseware for Mechanical Professional English
• Introduction to Mechanical Professional English
• Mechanical English Vocabulary • Mechanical English Reading and
Outline
Skimming through the text to identify key information or ideas and creating an outline to organize them This helps readers understand the structure of the article and how different ideas are connected
This skill allows readers to quickly scan through the text to get a general understanding of the content It is often used to identify key information or main ideas
Learning significance and purpose
Learning significance and purpose
Learning significance: Mastering mechanical English is of great significance for enhancing personal competitiveness, broadening international perspectives, and promoting academic exchanges.
PPT courseware for Mechanical Professional English
• Introduction to Mechanical Professional English
• Mechanical English Vocabulary • Mechanical English Reading and
Outline
Skimming through the text to identify key information or ideas and creating an outline to organize them This helps readers understand the structure of the article and how different ideas are connected
《机械工程专业英语》课件
机械工程原理
深入研究机械运动、力学和设计方面的原理和方法。
机械工程设计
学习机械系统和组件的设计过程,包括CAD和仿真技术的应用。
学习资源
参考书籍
推荐几本经典的机械工程教材, 供学生参考和深入学习。
学习网站
介绍几个优质的在线学习平台, 提供丰富的课程和资源供学生学 习。
实践项目
鼓励学生参与实际机械工程项目, 提升实践能力和解决问题的能力。
2 学生建议和意见
鼓励学生提供对课程的建议和意见,帮助课程更好地满足学生的需求。
总结
课程概述
总结《机械工程专业英语》课程 的内容和目标,强调学生在学习 过程中的收获。
学习成果
强调学生通过学习该课程所获得 的知识和技能,对未来的几个学习机械工程领域知识 的途径,如继续学习、实践项目 和职业培训。
《机械工程专业英语》 PPT课件
这个PPT课件旨在介绍《机械工程专业英语》课程的内容,包括课程目标、学 习方法、重点知识点、学习资源、考试评估、学生反馈和总结。
课程介绍
本节将详细介绍《机械工程专业英语》课程的目标、内容和学习方法。帮助 学生了解课程的重要性和学习的方法。
重点知识点
机械工程概述
了解机械工程领域的基本概念、原理和应用。
考试评估
1 考试形式
说明考试的形式,如闭卷 考试、开卷考试或者实践 考核。
2 考试内容
列举考试涵盖的知识点和 要求,帮助学生有针对性 地复习。
3 考试时间
确定考试的日期和持续时 间,提醒学生合理安排学 习时间。
学生反馈
1 课程满意度调查
开展匿名调查,了解学生对课程的满意度和建议,持续改进教学质量。
深入研究机械运动、力学和设计方面的原理和方法。
机械工程设计
学习机械系统和组件的设计过程,包括CAD和仿真技术的应用。
学习资源
参考书籍
推荐几本经典的机械工程教材, 供学生参考和深入学习。
学习网站
介绍几个优质的在线学习平台, 提供丰富的课程和资源供学生学 习。
实践项目
鼓励学生参与实际机械工程项目, 提升实践能力和解决问题的能力。
2 学生建议和意见
鼓励学生提供对课程的建议和意见,帮助课程更好地满足学生的需求。
总结
课程概述
总结《机械工程专业英语》课程 的内容和目标,强调学生在学习 过程中的收获。
学习成果
强调学生通过学习该课程所获得 的知识和技能,对未来的几个学习机械工程领域知识 的途径,如继续学习、实践项目 和职业培训。
《机械工程专业英语》 PPT课件
这个PPT课件旨在介绍《机械工程专业英语》课程的内容,包括课程目标、学 习方法、重点知识点、学习资源、考试评估、学生反馈和总结。
课程介绍
本节将详细介绍《机械工程专业英语》课程的目标、内容和学习方法。帮助 学生了解课程的重要性和学习的方法。
重点知识点
机械工程概述
了解机械工程领域的基本概念、原理和应用。
考试评估
1 考试形式
说明考试的形式,如闭卷 考试、开卷考试或者实践 考核。
2 考试内容
列举考试涵盖的知识点和 要求,帮助学生有针对性 地复习。
3 考试时间
确定考试的日期和持续时 间,提醒学生合理安排学 习时间。
学生反馈
1 课程满意度调查
开展匿名调查,了解学生对课程的满意度和建议,持续改进教学质量。
机械类专业英语ppt课件
精选课件
14
❖ cumulative ['kjuːmjʊlətɪv]
❖ adj. 累积的
❖ cumulative error 累积误差 ; 积累误差 ; 累积差误 ❖ cumulative frequencies 累积频数 ; 累计频数 ❖ cumulative learning 累积学习
❖ dimensionless
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18
❖ uniaxial ❖ adj. 单轴(向)的,同轴的
念 ; 压力集中 ❖ axial stress 轴向应力 ; 轴应力 ; 多轴向应力 ❖ ; 热应力试验 ❖ stress corrosion 应力腐蚀 ; 超应力腐蚀 ; 应力腐化 ; 应 ❖ Stress ball 压力球 ; 减压球 ; 美国原装 ; 握力球 ❖ stress amplitude 应力幅 ; 应力幅值 ; 应力幅度 ; 应力振幅
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15
❖ quantity
❖ n. 参数,值;数量;总量
❖ physical quantity 物理量 ; 物理量 ; 实物量 ; 要的实物量 ❖ dimensionless quantity 无量纲量 ; 无因次量 ; 无因次值 ❖ average quantity 平均数量 ; 平均量 ; 均匀数量 ; 均匀数目 ❖ additional quantity 追加数量 ; 额外数量 ; 附加量 ❖ considerable quantity 大数量 ; 可观的
❖ magnitude
❖ n. 数量、数值;大小;量级
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10
❖ equilibrium ❖ n. 平衡;稳定;保持平衡的能力
❖ [,iːkwɪ'lɪbrɪəm]
机械专业英语课件 PPT
1.There are two kinds of gun drills, namely, the center-cut gun drill used for drilling blind holes and the trepanning drill.
深孔钻分为两种,即用于钻削盲孔的中心钻和套孔 钻。
另一方面,直柄钻被固定到钻夹中,同理, 钻夹以与锥柄钻相同的方式固定到主轴孔中。
Paragraph 5
1.Twist drills are usually made of high-speed steel, although carbide-tipped drills are also available. The size of twist drills used in industrial range from 0.01 up to 3.25 in. (i.e., 0.25 up to 80 mm).
钻是利用绕轴旋转的钻头在工件上生成通孔或盲 孔的加工工艺。
2.Consequently, the range of cutting from that axis of rotation is equal to the radius of required hole.
因此,旋转轴的切削范围就等于所钻孔的半径。
2.This type of drill may have either three or four flutes and equal number of margins, which ensure superior guidance, thus resulting in high machining accuracy.这种类型的钻具有三个或四个出屑槽以及 相同数量的刃带,这些可确保准确的导向,从而获 得较高的机加工精度。
深孔钻分为两种,即用于钻削盲孔的中心钻和套孔 钻。
另一方面,直柄钻被固定到钻夹中,同理, 钻夹以与锥柄钻相同的方式固定到主轴孔中。
Paragraph 5
1.Twist drills are usually made of high-speed steel, although carbide-tipped drills are also available. The size of twist drills used in industrial range from 0.01 up to 3.25 in. (i.e., 0.25 up to 80 mm).
钻是利用绕轴旋转的钻头在工件上生成通孔或盲 孔的加工工艺。
2.Consequently, the range of cutting from that axis of rotation is equal to the radius of required hole.
因此,旋转轴的切削范围就等于所钻孔的半径。
2.This type of drill may have either three or four flutes and equal number of margins, which ensure superior guidance, thus resulting in high machining accuracy.这种类型的钻具有三个或四个出屑槽以及 相同数量的刃带,这些可确保准确的导向,从而获 得较高的机加工精度。
《机械专业英语unit》课件
Example analysis
Case Studies
Analyze real world case studies to demonstrate practical applications of mechanical writing
Compare and Contrast
Compare different writing styles and techniques to identify best practices
Standard expression: Mechanical English requires standardized and rigorous expression, in accordance with industry standards.
02
Common vocabulary and expressions in mechanical engineering English
Language accuracy
Use precision language and avoid technical errors
Clarity
Use simple language and avoid jargon to ensure the reader easily understands the content
Writing Standards
01
02
03
04
APA Style: Follow the American Psychological Association (APA) style guide for formatting and citations
APA Style: Follow the American Psychological Association (APA) style guide for formatting and citations
机械专业英语课件
上一课回顾
单词复习: surface roughness gage Dictate决定;对…有决定性影响 Ground down Tool and cutter grinders Pitch diameter Bore
Lesson 11 Numerical Control 数控 coded instructions Patent n.专利 factory floor 工厂车间 Massachusetts Institute of Technology MIT麻省理工学院 Cartesian coordinate system Counterclockwise 重点词汇:
1
2
3
This type of machine tool later gained widespread industrial application because of the need for consistency of dimensions and tighter tolerances.
As soon as the desired hole is drilled, the system moves the spindle to the next programmed location to drill another hole, and so on.
1
2
The spindle (or machine table) movement from one hole location to the next must be done as fast as possible to bring to a minimum the nonproductive time(非生产时间) spent in movement.
单词复习: surface roughness gage Dictate决定;对…有决定性影响 Ground down Tool and cutter grinders Pitch diameter Bore
Lesson 11 Numerical Control 数控 coded instructions Patent n.专利 factory floor 工厂车间 Massachusetts Institute of Technology MIT麻省理工学院 Cartesian coordinate system Counterclockwise 重点词汇:
1
2
3
This type of machine tool later gained widespread industrial application because of the need for consistency of dimensions and tighter tolerances.
As soon as the desired hole is drilled, the system moves the spindle to the next programmed location to drill another hole, and so on.
1
2
The spindle (or machine table) movement from one hole location to the next must be done as fast as possible to bring to a minimum the nonproductive time(非生产时间) spent in movement.
《机械专业英语unit》PPT课件
工业机器人现在正开始对工业进行一场革命。这 些机器人的样子和行为方式不很像人,但它们干的 是人类的工作。
revolutionize v. 革命,革命性变革
Robots are particularly useful in a wide variety of applications, such as material handling, spray painting, spot welding, arch welding, inspection, and assembly, current research efforts focus on creating a “smart” robot that can “see”, “hear, ”and “touch” and consequently make decisions.
Marcy: Ah, I see. The point here is that what we
show you are not other kinds of robots but industrial ones. We needn’t make them look like us humans. Mary: Well, I understand. Now could you tell us what these industrial robots can do for us? Marcy: Sure. These robots can do many things for us. They can help us, for example, to handle materials, spray paint, rescue people from the fire, and even help to explore deep oceans and outer-space. Tom: Uh, how great robots are! But what makes robots able to work for us so marvelously? spray painting 喷涂 marvelously奇迹般地,奇异地
revolutionize v. 革命,革命性变革
Robots are particularly useful in a wide variety of applications, such as material handling, spray painting, spot welding, arch welding, inspection, and assembly, current research efforts focus on creating a “smart” robot that can “see”, “hear, ”and “touch” and consequently make decisions.
Marcy: Ah, I see. The point here is that what we
show you are not other kinds of robots but industrial ones. We needn’t make them look like us humans. Mary: Well, I understand. Now could you tell us what these industrial robots can do for us? Marcy: Sure. These robots can do many things for us. They can help us, for example, to handle materials, spray paint, rescue people from the fire, and even help to explore deep oceans and outer-space. Tom: Uh, how great robots are! But what makes robots able to work for us so marvelously? spray painting 喷涂 marvelously奇迹般地,奇异地
《机械类专业英语》课件
《机械类专业英语》PPT 课件
这是一份关于《机械类专业英语》的PPT课件,涵盖了机械类专业英语的基础 知识、技能培训、实践案例和学习资料推荐。
第一部分:机械类专业英语基础知识
机械类词汇学习
掌握机械类专业中常用的英文词汇,扩展专业词汇量。
机械类专业常用句型
学习机械类专业中常见的句型,提高英语表达能力。
机械类专业常见缩写和术语解释
了解机械类专业中常用的缩写和术语,避免词汇歧义。
第二部分:机械类专业英语技能培训
机械类专业文档英文写作 技巧
分享撰写机械类专业文档的英文 写作技巧和注意事项。
机械类专业技术文献阅读 策略
介绍阅读机械类专业技术文献的 方法和技巧。
机械类专业领域英语口语 表达技巧
分享在机械类专业领域进行英语 口语表达的技巧和经验。
第三部分:机械类专业英语实践案例
1
机械类专业项目报告英文演讲
演示机械类专业项目报告时的英文演讲技巧和范例。
2
机械类专业跨文化交流中的英语技巧
探讨在机械类专业跨文化交流中使用英语的技巧和方法。
3
机械类专业国际会议英语能力培训
培养参加机械类专业国际会议时的英语交流能力和跨文化沟通技巧。
第四部分:机械类专业英语学习资料推荐
1 机械类英语在线学习 2 机械类英语词汇学习 3 机械类英语学习书籍
网站推荐
助手推荐
推荐
介绍几个优质的机械类英 语在线学习网站,提供学 习资习助手工具,帮 助提高词汇记忆。
推荐一些经典的机械类英 语学习书籍,助力学习进 步。
总结
通过本次《机械类专业英语》PPT课件,您将了解机械类专业英语的基础知识、 技能培训、实践案例和学习资料推荐,帮助您提升在机械类专业领域中的英 语能力。
这是一份关于《机械类专业英语》的PPT课件,涵盖了机械类专业英语的基础 知识、技能培训、实践案例和学习资料推荐。
第一部分:机械类专业英语基础知识
机械类词汇学习
掌握机械类专业中常用的英文词汇,扩展专业词汇量。
机械类专业常用句型
学习机械类专业中常见的句型,提高英语表达能力。
机械类专业常见缩写和术语解释
了解机械类专业中常用的缩写和术语,避免词汇歧义。
第二部分:机械类专业英语技能培训
机械类专业文档英文写作 技巧
分享撰写机械类专业文档的英文 写作技巧和注意事项。
机械类专业技术文献阅读 策略
介绍阅读机械类专业技术文献的 方法和技巧。
机械类专业领域英语口语 表达技巧
分享在机械类专业领域进行英语 口语表达的技巧和经验。
第三部分:机械类专业英语实践案例
1
机械类专业项目报告英文演讲
演示机械类专业项目报告时的英文演讲技巧和范例。
2
机械类专业跨文化交流中的英语技巧
探讨在机械类专业跨文化交流中使用英语的技巧和方法。
3
机械类专业国际会议英语能力培训
培养参加机械类专业国际会议时的英语交流能力和跨文化沟通技巧。
第四部分:机械类专业英语学习资料推荐
1 机械类英语在线学习 2 机械类英语词汇学习 3 机械类英语学习书籍
网站推荐
助手推荐
推荐
介绍几个优质的机械类英 语在线学习网站,提供学 习资习助手工具,帮 助提高词汇记忆。
推荐一些经典的机械类英 语学习书籍,助力学习进 步。
总结
通过本次《机械类专业英语》PPT课件,您将了解机械类专业英语的基础知识、 技能培训、实践案例和学习资料推荐,帮助您提升在机械类专业领域中的英 语能力。
《机械类专业英语》课件
Summary
Mastering common sentence patterns and grammar is the key to accurately expressing concepts in the field of machinery.
Detailed description
There are some specific sentence patterns and grammatical structures in Mechanical English, such as passive voice and complex sentence patterns. Learners need to be familiar with these sentence patterns and grammar to ensure that they can accurately and fluently express their meaning in writing and speaking.
Course objectives and learning significanceCourse objective: By studying mechanical engineering English, students will be able to master professional English vocabulary, terminology, and expressions in the field of mechanical engineering, and improve their reading, writing, translation, and communication skills.Learning significance: Students with mechanical English proficiency can better adapt to international demands, enhance their competitiveness in the field of mechanical engineering, and also contribute to promoting technical exchange and cooperation in the field of mechanical engineering.
机械专业英语课件
口语表达
发音和语音训练 常用词汇和表达方式 情景对话模拟练习 听力理解能力提升
写作技能
掌握专业词汇和术语
学会撰写科技论文和报告
了解英语论文的写作规范 和格式
掌握科技论文的常用句型 和表达方式
05
机械专业英语应用场景
技术文献阅读与翻译
技术文献类型:包括技术报告、 研究论文、专利等
翻译技巧:保持准确性、流畅性, 注意文化差异
课件形式多样:包括文本、图片、 视频等多种形式
添加标题
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课件内容丰富:涵盖机械专业的 各个方面
注重实践应用:结合实际案例, 注重实践操作和应用能力的培养
07
学习建议与展望
学习方法建议
制定学习计 划:合理安 排时间,确 保每天有足 够的学习时 间
注重实践: 通过实验、 实践等方式 加深对理论 知识的理解
研究生及教师
从事机械行业的技术人员
对机械专业感兴趣的人士
03
机械专业基础知识
机械专业词汇
机械专业基础词汇
常用机械部件名称
机械加工工艺流程
常用工具和测量仪器
机械原理与设计
机械原理:介绍 机械的基本原理、 机构、传动系统 等基础知识
机械设计:介绍 机械设计的基本 原则、方法、步 骤以及常用的设 计软件等
机械制造工艺: 介绍机械制造的 基本工艺、加工 方法、设备等
机械工程材料: 介绍常用的机械 工程材料及其性 能特点、应用范 围等
制造工艺与设备
制造工艺:介绍机械制 造的基本流程,包括毛 坯制造、零件加工、热 处理等关键环节。
设备:介绍常用的机 械加工设备,如车床、 铣床、磨床、钻床等, 以及它们的基本原理 和操作方法。
