​A spring is a mechanical part that uses elasticity to work. Generally made of spring steel. It is used to control the movement of parts, alleviate impact or vibration, store energy, measure the size of force, etc. It is widely used in machines and instruments. The types of springs are complex and diverse. According to the shape, there are mainly spiral springs, scroll springs, and leaf springs.

Here are the main functions of the spring:

(1) Control the movement of machinery, such as valve springs in internal combustion engines and control springs in clutches.

(2) Absorb vibration and impact energy, such as buffer springs under cars and train cars, vibration-absorbing springs in couplings, etc.

(3) Store and output energy as power, such as clock springs, springs in firearms, etc.

(4) Used as a force measuring element, such as a force measuring device, a spring in a spring scale, etc. The ratio of spring load to deformation is called spring stiffness. The greater the stiffness, the harder the spring.

Spring is an elastic element widely used in the mechanical and electronic industries. The spring can produce large elastic deformation when loaded, and convert mechanical work or kinetic energy into deformation energy. After unloading, the deformation of the spring disappears and returns to its original shape. Deformation energy is converted into mechanical work or kinetic energy.

Explain the various functions of the spring in detail
Measurement function

　　 We know that within the elastic limit, the extension (or contraction) of the spring is proportional to the external force. Use the nature of the spring to make a spring balance.

Squeeze function

　　 Observing various electrical switches, we will find that one of the two contacts of the switch must be equipped with a spring to ensure that the two contacts are in close contact and are in good conduction. If the contact is poor, the resistance at the contact will increase, and the heat generated when the current passes will increase. In severe cases, the metal at the contact will melt. The two metal posts of the bayonet base are equipped with springs for good contact; as for the central metal piece of the screw base and the plug-in metal pieces of all sockets are reeds, their function is to keep the two sides in close contact with each other. Same good. In the cassette tape, there is a phosphor bronze reed, which uses the elastic force generated when it is bent and deformed to make the magnetic head closely contact the tape. There is a long coil spring in the stapler. On the one hand, it is used to tighten the staples. On the other hand, when the front staple is pushed out, the back staples can be sent to the front to prepare the staples to be pushed out comfortably. In this way, the nails can be pushed to the front automatically one by one until all the nails are pushed out. Many machines feed automatically, and the automatic loading of bullets in automatic rifles relies on this function of springs. In addition, clips like clothes clips, ballpoint pens, and pen holders are all clamped on clothes by the pressing function of springs.

Reset function

　　The spring is deformed under the action of external force. After the external force is removed, the spring can be restored to its state. Many tools and equipment use springs to reset. For example, many building door hinges are equipped with return springs. After people enter and exit, the door will automatically reset. People also use this function to make automatic umbrellas, automatic pencils and other supplies, which is very convenient. In addition, various buttons and keys are also indispensable to return springs.