机电工程专业英语－朱林 杨春杰.ppt

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1、CONTENTSCONTENTS LessonLessonLessonLesson 1 1 1 1 Introduction to Machinery DesignIntroduction to Machinery DesignIntroduction to Machinery DesignIntroduction to Machinery Design Lesson 2 MechanismsLesson 2 MechanismsLesson 2 MechanismsLesson 2 Mechanisms Lesson 3 Machine PartsLesson 3 Machine Parts

2、Lesson 3 Machine PartsLesson 3 Machine Parts(I I I I)Lesson 4 Machine Parts(II)Lesson 4 Machine Parts(II)Lesson 4 Machine Parts(II)Lesson 4 Machine Parts(II)Lesson 5 Engineering Graphic in the Third-Lesson 5 Engineering Graphic in the Third-Lesson 5 Engineering Graphic in the Third-Lesson 5 Engineer

3、ing Graphic in the Third-angle Projectionangle Projectionangle Projectionangle Projection Lesson 6 Introduction to CAD/CAM/CAPPLesson 6 Introduction to CAD/CAM/CAPPLesson 6 Introduction to CAD/CAM/CAPPLesson 6 Introduction to CAD/CAM/CAPP Lesson 7 A Discussion on Modern Design Lesson 7 A Discussion

4、on Modern Design Lesson 7 A Discussion on Modern Design Lesson 7 A Discussion on Modern Design Optimization Optimization Optimization Optimization Lesson 8 Using Dynamic Simulation in the Lesson 8 Using Dynamic Simulation in the Lesson 8 Using Dynamic Simulation in the Lesson 8 Using Dynamic Simulat

5、ion in the Development of Construction Machinery Development of Construction Machinery Development of Construction Machinery Development of Construction Machinery Lesson 9 Engineering Tolerance Lesson 9 Engineering Tolerance Lesson 9 Engineering Tolerance Lesson 9 Engineering Tolerance Lesson 10 Num

6、erical Control Lesson 10 Numerical Control Lesson 10 Numerical Control Lesson 10 Numerical Control Lesson 11 Introduction to Heat Pipe Lesson 11 Introduction to Heat Pipe Lesson 11 Introduction to Heat Pipe Lesson 11 Introduction to Heat Pipe Technology in Machining Process Technology in Machining P

7、rocess Technology in Machining Process Technology in Machining Process Lesson 12 Introduction to Material Forming Lesson 12 Introduction to Material Forming Lesson 12 Introduction to Material Forming Lesson 12 Introduction to Material Forming Lesson 13 Material Forming Processes Lesson 13 Material F

8、orming Processes Lesson 13 Material Forming Processes Lesson 13 Material Forming Processes Lesson 14 Introduction to Mould Lesson 14 Introduction to Mould Lesson 14 Introduction to Mould Lesson 14 Introduction to Mould Lesson 15 Mould Design and Manufacturing Lesson 15 Mould Design and Manufacturing

9、 Lesson 15 Mould Design and Manufacturing Lesson 15 Mould Design and Manufacturing Lesson 16 Heat Treatment of Metal Lesson 16 Heat Treatment of Metal Lesson 16 Heat Treatment of Metal Lesson 16 Heat Treatment of Metal Lesson 17 Virtual Manufacturing Lesson 17 Virtual Manufacturing Lesson 17 Virtual

10、 Manufacturing Lesson 17 Virtual Manufacturing Lesson 18 Fluid and Hydraulic System Lesson 18 Fluid and Hydraulic System Lesson 18 Fluid and Hydraulic System Lesson 18 Fluid and Hydraulic System Lesson 19 Product Test and Quality Control Lesson 19 Product Test and Quality Control Lesson 19 Product T

11、est and Quality Control Lesson 19 Product Test and Quality Control Lesson 20 Introduction of Automobile Engine Lesson 20 Introduction of Automobile Engine Lesson 20 Introduction of Automobile Engine Lesson 20 Introduction of Automobile Engine Lesson 21 The Automobile ComponentsLesson 21 The Automobi

12、le ComponentsLesson 21 The Automobile ComponentsLesson 21 The Automobile Components Lesson 22 Mechatronics Lesson 22 Mechatronics Lesson 22 Mechatronics Lesson 22 Mechatronics Lesson 23 Industrial Robots Lesson 23 Industrial Robots Lesson 23 Industrial Robots Lesson 23 Industrial Robots Lesson 24 An

13、 Army of Small Robots Lesson 24 An Army of Small Robots Lesson 24 An Army of Small Robots Lesson 24 An Army of Small Robots Lesson 25 Introduction to MEMS Lesson 25 Introduction to MEMS Lesson 25 Introduction to MEMS Lesson 25 Introduction to MEMS Lesson 26 Dialogue Lesson 26 Dialogue Lesson 26 Dial

14、ogue Lesson 26 DialogueAt CIMTAt CIMTAt CIMTAt CIMT Lesson 27 Virtual Manufacturing Lesson 27 Virtual Manufacturing Lesson 27 Virtual Manufacturing Lesson 27 Virtual Manufacturing Lesson 1 Introduction to Machinery DesignLesson 1 Introduction to Machinery Design 1.1 Text1.1 Text1.1 Text1.1 Text 1Mac

15、hinery design is either to formulate an 1Machinery design is either to formulate an engineering plan for the satisfaction of a specified engineering plan for the satisfaction of a specified need or to solve an engineering problem.It involves need or to solve an engineering problem.It involves a rang

16、e of disciplines in materials,mechanics,a range of disciplines in materials,mechanics,heat,flow,control,electronics and production.heat,flow,control,electronics and production.Machinery ComponentsMachinery ComponentsThe The major major part part of of a a machine machine is is the the mechanical mec

17、hanical system.system.3And 3And the the mechanical mechanical system system is is decomposed decomposed into into mechanisms,mechanisms,which which can can be be further further decomposed decomposed into into mechanical mechanical ponents.In In this this sense,sense,the the mechanical mechanical co

18、mponents components are are the the fundamental fundamental elements elements of of machinery.machinery.On On the the whole,whole,mechanical mechanical components components can can be be classified classified as as universal universal and and special special ponents.Bolts,Bolts,gear,gear,and and ch

19、ains chains are are the the typical typical examples examples of of the the universal universal components,components,which which can can be be used used extensively extensively in in different different machines machines across across various industrial sectors.various industrial sectors.Mechanical

20、 Design ProcessMechanical Design ProcessProduct Product design design requires requires much much research research and and development.development.Many Many concepts concepts of of an an idea idea must must be be studied,studied,tried,tried,refined,refined,and and then then either either used used

21、or or discarded.discarded.Although Although the the content content of of each each engineering engineering problem problem is is unique,unique,the the designers designers follow follow the the similar similar process process to to solve solve the the problems.problems.The The complete complete proc

22、ess process is is often often outlined as in Fig.1.1.outlined as in Fig.1.1.Fig.1.1 Design Process Model Recognition of NeedRecognition of NeedRecognition of NeedRecognition of NeedSometimes,Sometimes,design design begins begins when when a a designer designer recognizes recognizes a a need need and

23、 and decides decides to to do do something something about about it.it.The The need need is is often often not not evident evident at at all;all;recognition recognition is is usually usually triggered triggered by by a a particular particular adverse adverse circumstance circumstance or or a a set s

24、et of of random random circumstances,circumstances,which which arise arise almost almost simultaneously.simultaneously.Identification Identification of of need need usually usually consists consists of of an an undefined undefined and and vague vague problem problem statement.statement.Definition of

25、 ProblemDefinition of ProblemDefinition of ProblemDefinition of ProblemDefinition Definition of of problem problem is is necessary necessary to to fully fully define define and and understand understand the the problem,problem,after after which which it it is is possible possible to to restate resta

26、te the the goal goal in in a a more more reasonable reasonable and and realistic realistic way way than than the the original original problem problem statement.statement.Definition Definition of of the the problem problem must must include include all all the the specifications specifications for f

27、or the the thing thing that that is is to to be be designed.designed.Obvious Obvious items items in in the the specifications specifications are are the the speeds,speeds,feeds,feeds,temperature temperature limitations,limitations,maximum maximum range,range,expected expected variation variation in

28、in the the variables,variables,and and dimensional and weight limitations.dimensional and weight limitations.SynthesisSynthesisSynthesisSynthesisThe The synthesis synthesis is is one one in in which which as as many many alternative alternative possible possible design design approaches approaches a

29、re are sought,sought,usually usually without without regard regard for for their their value value or or quality.quality.This This is is also also sometimes sometimes called called the the ideation ideation and and invention invention step step in in which which the the largest largest possible poss

30、ible number number of of creative creative solutions solutions is is generated.generated.The The synthesis synthesis activity activity includes includes the the specification specification of of material,material,addition addition of of geometric geometric features,features,and and inclusion inclusi

31、on of of greater greater dimensional detail to the aggregate design.dimensional detail to the aggregate design.AnalysisAnalysisAnalysis Analysis is is a a method method of of determining determining or or describing describing the the nature nature of of something something by by separating separati

32、ng it it into into its its parts.parts.In In the the process process the the elements,elements,or or nature nature of of the the design,design,are are analyzed analyzed to to determine determine the the fit fit between between the the proposed design and the original design goals.proposed design and

33、 the original design goals.EvaluationEvaluationEvaluationEvaluationEvaluation is the final proof of a successful Evaluation is the final proof of a successful design and usually involves the testing of a design and usually involves the testing of a prototype in the laboratory.Here we wish to prototy

34、pe in the laboratory.Here we wish to discover if the design really satisfies the discover if the design really satisfies the needs.needs.The above description may give an erroneous The above description may give an erroneous impression that this process can be impression that this process can be acc

35、omplished in a linear fashion as listed.On accomplished in a linear fashion as listed.On the contrary,iteration is required within the the contrary,iteration is required within the entire process,moving from any step back to entire process,moving from any step back to any previous step.any previous

36、step.PresentationPresentationPresentationPresentationCommunicating Communicating the the design design to to others others is is the the finial,finial,vital vital presentation presentation step step in in the the design design process.process.Basically,Basically,there there are are only only three t

37、hree means means of of munication.These These are are the the written,written,the the oral,oral,and and the the graphical graphical forms.forms.A A successful successful engineer engineer will will be be technically technically competent competent and and versatile versatile in in all all three thre

38、e forms forms of of munication.The The competent competent engineer engineer should should not not be be afraid afraid of of the the possibility possibility of of not not succeeding succeeding in in a a presentation.presentation.In In fact,fact,the the greatest greatest gains gains are are obtained

39、by those willing to risk defeat.obtained by those willing to risk defeat.Contents of Machinery DesignContents of Machinery DesignContents of Machinery DesignContents of Machinery DesignMachinery Machinery design design is is an an important important technological technological basic basic course co

40、urse in in mechanical mechanical engineering engineering education.education.Its Its objective objective is is to to provide provide the the concepts,concepts,procedures,procedures,data,data,and and decision decision analysis analysis techniques techniques necessary necessary to to design design mac

41、hine machine elements elements commonly commonly found found in in mechanical mechanical devices devices and and systems;systems;to to develop develop engineering engineering students students competence competence of of machine machine design design that that is is the the primary primary concern c

42、oncern of of machinery machinery manufacturing manufacturing and and the the key key to to manufacture good products.manufacture good products.1.2 Words and phrases1.2 Words and phrases1.2 Words and phrases1.2 Words and phrasesmachinery n.总称 机器，机械 trivial adj.琐细的，平常的，微不足道的 mechanism n.机构chain n.链(条)

43、，镣铐，一连串，一系列turbine blade n.涡轮机叶片crankshaft n.曲轴propeller n.推进者,推进物,尤指轮船、飞 机上的螺旋推进器discard v.丢弃,抛弃recognition n.识别trigger v.引发,引起,触发vague adj.含糊的,不清楚的synthesis n.综合ideation n 构思能力，思维能力，构思过程aggregate adj.合计的,集合的prototype n.样机，原型erroneous adj.错误的,不正确的iteration n.反复competent adj.有能力的,胜任的versatile adj.通用

44、的,万能的,多才多艺的 1.3 Complex Sentence Analysis1.3 Complex Sentence Analysis1.3 Complex Sentence Analysis1.3 Complex Sentence Analysis1 Machinery design is either to formulate an engineering plan for the satisfaction of a specified need or to solve an engineering problem.eitheror：或或 formulate：明确地表达，阐明机械设计

45、用以阐明满足某种特殊需要的工程计划或解决具体的工程问题。2 It is important that the designer begins by identifying exactly how he or she will recognize a satisfactory alternative,and how to distinguish between two satisfactory alternatives in order to identify the best.对于设计者来说，一开始就能准确判定出令人满意的设计方案，并能加以区别以选择最好的，这一点很重要。3 And the m

46、echanical system is decomposed into mechanisms,which can be further decomposed into mechanical components.be decomposed into：被分解为 which 引导一个定语从句，在从句中做主语，指前 面的 mechanisms。机械系统可以分解为机构,机构又可以进一步分解为机械零件。1.4 Exercise 1.4 Exercise 1.4 Exercise 1.4 Exercise 1.4.1Translate the Following Paragraphs 1.4.1Trans

47、late the Following Paragraphs 1.4.1Translate the Following Paragraphs 1.4.1Translate the Following Paragraphs The practice of design can be one of the most exciting and fulfilling activities that an engineer can undertake.There is a strong sense of satisfaction and pride in seeing the results of one

48、s creative efforts emerge into actual products and processes that benefit people.To do design well requires a number of characteristics.1.4.2 Choose the proper answer to fill in the blank 1.4.2 Choose the proper answer to fill in the blank 1.4.2 Choose the proper answer to fill in the blank 1.4.2 Ch

49、oose the proper answer to fill in the blank and translate the sentencesand translate the sentencesand translate the sentencesand translate the sentences 1They are using a()shovel to clear up the streets.2Many products are made by().3There is not a()who hasnt had this problem.4Machinery design involv

50、es a range of disciplines in materials,(),heat,flow,control,electronics and production.5The Allies finally smashed the Nazi war().Lesson 2 MechanismsLesson 2 Mechanisms 2.1 Text2.1 Text2.1 Text2.1 Text A mechanism is the members combination more than two A mechanism is the members combination more t