1、毕 业 设 计 论 文 外文资料原文及译文 学 院：机电工程学院 专 业：机械设计制造及其自动化 班 级： 学 号： 姓 名： - 1 - Mechanical engineering 1.The porfile of mechanical engineering Engingeering is a branch of mechanical engineerig,it studies mechanical and power generation especially power and movement. 2.The history of mechanical engineering 18t
2、h century later periods,the steam engine invention has provided a main power fountainhead for the industrial revolution,enormously impelled each kind of mechznical biting.Thus,an important branch of a new Engineering separated from the civil engineering tools and machines on the branch-developed tog
3、ether with Birmingham and the establishment of the Associantion of Mechanical Engineers in 1847 had been officially recognized.The mechanical engineering already mainly used in by trial and error method mechanic application technological development into professional engineer the scientific method o
4、f which in the research,the design and the realm of production used .From the most broad perspective,the demend continuously to enhance the efficiencey of mechanical engineers improve the quality of work,and asked him to accept the history of the high degree of education and training.Machine operati
5、on to stress not only economic but also infrastructure costs to an absolute minimun. 3.The field of mechanical engineering The commodity machinery development in the develop country,in the high level material life very great degree is decided each kind of which can realize in the mechanical engineer
6、ing.Mechanical engineers unceasingly will invent the machine next life to produce the commodity,unceasingly will develop the accuracy and the complexity more and more high machine tools produces the machine.The main clues of the mechanical development is:In order to enhance the excellent in quality
7、and reasonable in price produce to increase the precision as well as to reduce the production cost.This three requirements promoted the complex control system development.The most successful machine manufacture is its machine and the control system close fusion,whether such control system is essenti
8、ally mechanical or electronic.The modernized car engin production transmission line(conveyer belt)is a series of complex productions craft mechanization - 2 - very good example.The people are in the process of development in order to enable further automation of the production machinery ,the use of
9、a computer to store and handle large volumes of data,the data is a multifunctional machine tools necessary for the production of spare parts.One of the objectives is to fully automated production workshop,three rotation,but only one officer per day to operate.The development of production for mechan
10、ical machinery must have adequate power supply.Steam engine first provided the heat to generate power using practical methods in the old human,wind and hydropower,an increase of engin .New mechanical engineering industry is one of the challenges faced by the initial increase thermal effciency and po
11、wer,which is as big steam turbine and the development of joint steam boilers basically achieved.20th century,turbine generators to provide impetus has been sustained and rapid growth,while thermal efficiency is steady growth,and large power plants per kW capital consumption is also declining.Finally
12、,mechanical engineers have nuclear energy.This requires the application of nuclear energy particularly high reliability and security, which requires solving many new problems.Large power plants and the nuclear power plant control systems have become highly complex electroonics,fluid,electricity,wate
13、r and mechanical parts networks All in all areas related to the mechanical engineers.Small internal combustion engine,both to the type (petrol and diesel machines)or rotary-type(gas turbines and Mong Kerr machine),as well as their broad application in the field of transport should also due to mechan
14、ical enginerrs.Throughout the transport,both in the air and space,or in the terrestrial and marine,mechanial engineers created a variety of equipment and power devices to their increasing cooperation with electrical engineers,especially in the development of appropration control systems.Mechanical e
15、ngineers in the development of military weapons technology and civil war ,needs a similar,though its purpose is to enhance rather than destroy their productivity.However.War needs a lot of resources to make the area of techonlogy,many have a far-reaching development in peacetime efficiency.Jet aircraft and nuclear reactors are well known examples. The Biological engineering,mechanical engineering biotechnology is a relatively new and different areas,it provides for the replacement of the machine or increase the
