外文翻译机械设计.docx

1、外文翻译机械设计Mechanical DesignAbstract: A machine is a combination of mechanisms and other components which transforms, transmits, or utilizes energy, force, or motion for a useful purpose. Examples are engines, turbines, vehicles, hoists, printing presses, washing machines, and movie cameras. Many of th

2、e principles and methods of design that apply to machines also apply to manufactured articles that are not true machines, from hub caps and filing cabinets to instruments and nuclear pressure vessels. The term mechanicaldesign is used in a broader sense than machine design to include their design.Fo

3、r some apparatus, the thermal and fluid aspects that determine the requirements of heat, flow path,and volume are separately considered. However, the motior and structural aspects and the provisions for retention and enclosure are considerations in mechanical design. Applications occur in the field

4、of mechanical engineering, and in other engineering fields as well, all of which require mechanical evices, such as switches, cams, valves, vessels, and mixers.keyword: Mechanical Designmechanisms Design Process Tolerance Design processThe design begins from real of or the demand of imagination. The

5、 existing instrument may need to take in to improve on the enduring, efficiency,weight, speed or the cost. May need new instrument to complete before function done by person, such as Assemble or maintain. The target is all or partly after making sure, design of the next move is to conceive outline t

6、he organization that can complete the function needed and it arranges for this, drawing grass diagram to be worth barehanded biggest,it isnt only one personal record of viewpoint with with others discussion of assistance means, and be suitable for to communicate with own viewpoint particularly, is t

7、he stimulant which creates sex way of thinking to still need extensive knowledge concerning parts, because a the set new machine usually from be familiar with of each kind of spareparts reschedule or substitute but become, changed size and material perhaps. Regardless at conceive outline process in

8、still after, a design will carry on a fast or rough calculation or analyze to make sure regulation size and possibility. When some concerning need or can use amount of space of viewpoint assurance after, can start pro rata painting grass diagram. Finally, 1 completed according to the design of the f

9、unction and the credibility, can make kind machine.lf test satisfied, and if the device wants mass production, will to the first design carry on a certain modification to insure with lower cost mass-produce. Later on several years of make and use a period, design probably because of conceive outline

10、 new viewpoint perhaps according to test and experience foundation of further analytical the change shown but change. Sell attraction, customer s satisfaction and manufacturing costs to all have something to do with design, the success which designs ability and engineering investment is closely rela

11、ted. Some design standardsAt this part, someone suggests the attitude of the usage creation carries on of analysis, this kind of analysis can cause a graveness improvement and to back up the product conceive outline with perfect,perhaps the product function is more, more economic and more enduring.

12、Creating the stages needing not is first with independentstage. Although analyze personnel the whole probably irresponsible design, he isn t only the right answer of with problem that can be from the numeral put forward wanting him to resolve only, not only only is give should dint value, the size w

13、orks to limit perhaps. He can put forward more extensive views, for the purpose of improvement norm or project. Because in the analysis the行ont or the analysis the process,he will acquaint with to equip and its work condition, he is fully placed in a beneficial position which conceives outline to ch

14、oose a project. Best he can put forward a suggestion change shape to Elimination moment of force or should dint concentration, not allow to set up to have to cut the organization that noodles and excessive dynamic state carry a lotus greatly best is he discards his meticulous of design but is not se

15、e a machine discard afterwards. For stiring up to create sex thinking, the suggestion designs a personnel and analytical the personnel use following standard.6 ex-standards are particularly applicable to an analysis personnel,although he may involve to all this 10.1. Create the physical function tha

16、t sex land utilization need when using combine the control dont need.2. Know practical carry lotus and its importance.3. Consider in advance there is no function carrying a lotus.4. Invent to add to carry a condition more beneficially.5. Provide minimum weight the most beneficial of distribute in re

17、sponse to the dint with rigid.6. Use a basic and square distance calculation a comparison and make size superior to turn.7. Select by examinations material to acquire a function combination.8. At spare parts and integrated spare parts careful choice.9. Modify a function design with the orientation p

18、roduction line and decline low cost10. Consider to make parts accurate to position in the assemble with with each other not interference Mechanical Design The whole machine design is a complicated process. Designing the personnel have to at thus of realm, such as calm down mechanics, kinetics dynami

19、cs and material mechanics have good cultivated manners, have to also acquaint with manufacturing material and make a craft in addition. Designing the personnel has to can combine all related facts, carrying on Teaches Wei and creating grass diagram and graphics to cometo deliver the manufacturing re

20、quest to the car.The square one that any product designs works it an is the material that the choice useds for making each parts. The design personnel of today can get an innumerable. While choosing, function, external appearance,material cost and manufacturing costs of product are all very importan

21、t. Had to be careful to evaluate the function of material before any calculation.It is necessary a careful calculation with the usefulness of insuring the design. Compute to never appear on the diagram, but from ten various reason be saved. Once the whichever parts loses efficacy, will clear up to d

22、o what while designing this defective spare parts at the beginning;And, can acquire an experience document from compute past item. While needing the design for ising similar to, the past record will have a tremendous help.The check of computing(with diagram top size) is the most important. A decimal

23、 point s mislaying position can ruin an original and acceptable item. For example, if a person wants to design a bracket that can prop up 100 pounds, but it should can prop up 1000 pounds originally, the result affirmation will fail. The square aspect noodles had to check a check to design again a w

24、ork.The calculator speaks to is an of great use tool for the staff member,can ease a dull calculation and provide to expand analysis to the existing data. Hand over system to make the calculator assistance design (CAD) with each other according to the calculator function and the calculator lend supp

25、ort to a manufacturing(CAM) to make possible.Pass thus of system, may conceive outline a first step to deliver to beat bore paper to take to used for numeral to process control but need not to draw formal construction diagram.The machine design for the laboratory test, model and kind machine is very

26、 helpful. The laboratory provided a lot of build up basic concept need of information, however, can also acquire with them some concerning product Finally,how on the spot would the understanding for working.a design personnel of success should offer the step that the utmost effort keeps up with ages

27、. Will appear new material and produce a method everyday. If painting and design personnels dont acquainting with modern method and material may put out action.A good design personnel should usually read technique periodical to keep up with anew development The engineering work is bad The solid is m

28、ade sure boundary by its surface boundary. Typical model ground, design a personnel to specify Mr. to call size to a spare parts to make it contented its demand. Actually because of the surface irregular and proper surface rough degree, each spare parts cant make into Mr. to call sizes hasing to all

29、ow size to have some varieties can make with insuring repeatedly. But, the variety allowed cant certainly too big with as for make to assemble the function of the piece to become bad. Single the variety allowed by spare parts is called business trip. Business trip this technical term not only is app

30、licable to from the acceptable scope of the parts size ofwith manufacturing craft creation, but also is applicable to a machine or processes of exportation. For example, a give already set number of thepower each pedestals of I. C. engine have variety. Actually, we usually discover this kind of vari

31、ety model will be a frequency to distribute curve, for example t. The distributes. (call the Gauss distribute again) One of the work which designs a personnel is the variety which specifies size for a spare parts and allows, this value canproduce acceptable function. Spare parts business tripWhen th

32、ere is no appointed accurate size in the diagram, most organizations all have in general use business trip of being applicable to the size. For process size, in general use business trips maying bea士is 0.5 millimeters. Therefore being specified to 15.0 millimeter scopes of sizes can be of 14.5-15.5

33、millimeters. Other in general use business trips can be applicable to such as the angle and drill a hole with blunt bore, The casting, the forging, the welded joint and weld the angle etc. situation.Can make reference to the diagram of past or general engineering to practice while giving the appoint