附录Y 外文原文
Mechanical engineering
Engineering science is widely used in our life, especially the application of mechanical engineering in our life is almost all over our life, from cars and airplanes to electric fans and umbrellas, all of which are related to machinery. Engineering includes many subjects, but mechanical engineering is one of the most important subjects, not only because it is closely related to our life, but also because with the progress of the times, people have relied on the products made by mechanical engineering. In the automation today, machines replace many parts of the labor that should be done by human beings, improving efficiency and saving time.
There are basically only three ways for people to express their ideas, namely, written materials, oral expressions and drawings. Therefore, in addition to mastering technology, an excellent engineer should also be proficient in these three expressions. If a person with strong technical ability is poor in one of the above three expressions, he will encounter great difficulties. If the above three abilities are very poor, no one will ever know how capable he is!
A competent engineer should not be afraid of the possibility of failure in presenting his own plan. In fact, accidental failure is bound to happen, because every truly creative idea seems to always have failure or criticism with it. We can learn a lot from a failure. Only those who are not afraid of failure can gain the most. In short, the decision not to submit the plan is a real failure.
Introduction to mechanical design
Mechanical design is an applied technology science that satisfies human needs by designing new products or improving products. It is a broad field of engineering technology, not only to study the basic idea of product in terms of size, shape and detailed structure, but also to consider the relevant issues of product in terms of manufacturing, sales and use.
People who do all kinds of mechanical design work are usually called designers or design engineers. Mechanical design is a creative work. Design engineers should not only be innovative in their work, but also have profound basic knowledge in mechanical drawing, kinematics, engineering materials, material mechanics and mechanical manufacturing process.
As mentioned earlier, the purpose of mechanical design is to produce products that can meet human needs. Invention, discovery and scientific knowledge do not necessarily bring benefits to human beings, only when they are used in products can they produce benefits. Therefore, it should be recognized that before designing another specific product, it is necessary to determine whether people need it or not.
Mechanical design should be regarded as a good opportunity for designers to use creative ability to design products, analyze systems and formulate manufacturing processes. It is more important to master basic engineering knowledge than to memorize some data and formulas. Using data and formulas alone is not enough to make all the decisions needed in a good design. On the other hand, all operations should be carried out carefully and accurately. For example, even if you misplace a decimal point, you will make the right design wrong.
A good designer should dare to put forward new ideas, and be willing to take some risks. When the new method is not applicable, the original method should be restored. Therefore, designers have to be patient, because the time and effort spent does not guarantee success. A new design requires the rejection of many old and well-known methods. Because many people are easy to stick to the rules, its not an easy thing to do. In this process, we should carefully select the original and verified design principles, and combine them with the new ideas that have not been verified.
As mechanical engineering is widely used in every aspect of life, as an engineer, we have to face a lot of challenges. In addition to having a solid knowledge of assembly, we should keep pace with the times, be familiar with the software related to machinery,production methods (parts interchangeability production, professional division and cooperation, flow machining line and assembly line, etc.). This paper studies the environmental pollution and excessive consumption of natural resources in the manufacturing process of mechanical products, especially in use, and the countermeasures. This is a very important task of modern mechanical engineering, and its importance is increasing day by day. Application of mechanical products. and be able to use the software well. As an engineer, we should try our best to design and manufacture machines closely related to life, And can play a real role in life, and only in this way, we can solve and alleviate the needs of the current society, therefore, mechanical engineering will play an important role in the future social development, especially in Chinas situation, when industry is not very developed, the space for mechanical development is larger to be a better tomorrow to have a pefert dream.
Before the industrial revolution, most of the machines were made of wood, which was made by hand. With the development of social economy, the demand for mechanical products has increased dramatically. The increase of production batch and the progress of precision machining technology promote the formation of mass production methods (parts interchangeability production, professional division and cooperation, flow machining line and assembly line, etc.). This paper studies the environmental pollution and excessive consumption of natural resources in the manufacturing process of mechanical products, especially in use, and the countermeasures. This is a very important task of modern mechanical engineering, and its importance is increasing day by day. Application of mechanical products. This includes the selection, ordering, acceptance,
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