Machining refers to the process of changing the shape or performance of a workpiece through a mechanical device. According to the difference in processing methods, it can be divided into cutting processing and pressure processing.

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Construction machinery is an important part of the equipment industry. In a nutshell, the mechanical equipment necessary for comprehensive mechanized construction projects required for earth and stone construction projects, road construction and maintenance, mobile crane loading and unloading operations, and various construction projects are called engineering machinery.

It is mainly used in national defense construction projects, transportation construction, energy industry construction and production, mining and other raw material industrial construction and production, agriculture, forestry and water conservancy construction, industrial and civil construction, urban construction, environmental protection and other fields.

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Mechanical design, according to the requirements of use, conceive, analyze and calculate the working principle, structure, movement mode, force, and energy transmission mode, material and shape size of each part, lubrication method, etc. and convert it into a specific description to The working process as the basis for manufacturing.

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Mechanical engineering is based on relevant natural sciences and technical sciences, combined with technical experience in production practice, to study and solve all theoretical and practical problems in the development, design, manufacturing, installation, use and repair of various machinery Subject.

Machinery is one of the five elements (people, capital, energy, materials, and machinery) for production and services in modern society, and it participates in the production of energy and materials.

Before the 15th to 16th centuries, the development of mechanical engineering was slow.

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Mechanical seals are also called end face seals and are mainly used to seal the rotating shafts of pumps, compressors, hydraulic drives and other similar equipment. The mechanical seal is a sealing device composed of a pair and several pairs of moving rings and static rings consisting of a plane friction pair.

The mechanical seal is a device that prevents fluid leakage by keeping at least a pair of end faces perpendicular to the axis of rotation under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal to prevent fluid leakage. If the auxiliary seal of the compensation ring is a metal bellows, it is called a bellows mechanical seal.

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Mechanical seals are also called end face seals and are mainly used to seal the rotating shafts of pumps, compressors, hydraulic drives and other similar equipment. The mechanical seal is a sealing device composed of a pair and several pairs of moving rings and static rings consisting of a plane friction pair.

The mechanical seal is a device that prevents fluid leakage by keeping at least a pair of end faces perpendicular to the axis of rotation under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal to prevent fluid leakage. If the auxiliary seal of the compensation ring is a metal bellows, it is called a bellows mechanical seal.

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Mechanical drawing is a discipline that uses drawings to accurately represent the structure, size, working principle and technical requirements of machinery.

Drawings are composed of graphics, symbols, text, and numbers. They are technical documents that express design intent, manufacturing requirements, and exchange experience. They are often referred to as the language of engineering circles.

In 1799, French scholar Monge published the work “Descriptive Geometry”. Since then, the figures in the mechanical drawings have been drawn strictly in accordance with the projection theory of descriptive geometry.

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There are many types of machinery, which can be divided into various categories according to several different aspects.

For example, according to the function, it can be divided into power machinery, material handling machinery, crushing machinery, etc.; according to the service industry, it can be divided into agricultural machinery, mining machinery, textile machinery, packaging machinery, etc.; according to the working principle, it can be divided into thermal machinery, fluid machinery, Bionic machinery, etc.

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Any modern industry and engineering field need to apply machinery, that is, people’s daily life and more and more various machines are used, such as cars, bicycles, clocks, cameras, washing machines, refrigerators, air conditioners, vacuum cleaners and so on.

  • A machine is a combination of objects, and it is difficult to deform if force is applied to its various parts.
  • These objects must realize mutual, single, prescribed movement.
  • Transform the applied energy into the most useful form or into effective mechanical work.
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Machinery is the general term for machines and institutions.

Machinery is a tool device that can help people reduce the difficulty of work or save effort. Items such as chopsticks, brooms, and tweezers can all be called machinery. They are simple machinery. The complex machinery is composed of two or more simple machinery. These more complicated machines are usually called machines. From the point of view of structure and movement, there is no difference between mechanism and machine, which is generally called machine.

Generally speaking, machinery is a tool device that can help people reduce the difficulty of work or save effort. Items such as chopsticks, brooms, and tweezers can all be called machinery. They are simple machinery. The complex machinery is composed of two or more simple machinery. These more complicated machines are usually called machines.

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