Function introduction and application of spring

Main function

① Control the movement of machinery, such as valve springs in internal combustion engines.

(2) Absorb vibration and shock energy, such as the buffer spring under the car and train car, and the vibration absorption spring in the coupling.

③ Storage and output energy as power, such as watch springs, firearms springs, etc.

④ Used as force measuring components, such as force gauges, springs in spring scales, etc. The ratio of the load to the deformation of the spring is called the spring stiffness, and the greater the stiffness, the harder the spring.

Precision spring is a kind of elastic element widely used in the mechanical and electronic industry, the spring can produce a large elastic deformation when loaded, the mechanical work or kinetic energy into deformation energy, and after unloading the deformation of the spring disappears and returns to the original state, the deformation energy into mechanical work or kinetic energy.

Measuring function

We know that within the elastic limit, the extension (or contraction) of the spring is proportional to the external force. The spring scale is made of this property of spring.

Reset function

The spring deforms under the action of an external force, and after the external force is removed, the spring can return to its state. Many tools and equipment use this property of the spring to reset. People also use this function to make automatic umbrellas, automatic pencils and other supplies, very convenient. In addition, all kinds of buttons and keys are also indispensable reset springs.

Driving function

Mechanical clocks and clockwork toys are all driven by winding. When the spring is wound up, the spring produces bending deformation and stores a certain elastic potential energy. After the release, the elastic potential energy is transformed into kinetic energy, and the rotation is driven by the transmission device. In toy guns and starting guns and military guns are also one of the nature of the use of springs to work.

Buffering function

The spring is installed between the frame and the wheel of the locomotive car, and the elasticity of the spring is used to slow down the turbulence of the vehicle.

Vocal function

When air flows through the spring holes in the harmonica and accordion, it hits the reed, and the reed vibrates to make a sound.

Compaction function

Observing various electrical switches will find that one of the two contacts of the switch is bound to be equipped with a spring to ensure that the two heads are in close contact and are well connected. If the contact is poor, the resistance at the contact becomes larger, the heat generated when the current passes through becomes larger, and the metal at the contact will melt in serious cases. The two metal columns of the bayonet lamp head are equipped with springs for good contact; As for the center metal of the screw lamp head and the connector metal of all sockets, they are reed, and their function is to make both sides close contact to maintain the same good. There is a long helical spring in the stapler whose function is on the one hand to tighten the staple, on the other hand, when the most front staple is pushed out, the back staple can be sent to the front for the nail to be comfortably pushed out, so that you can automatically push one nail to the front until the nail is all pushed out. In addition, clips like clothes clips, ballpoint pens, and clips on pen sets are clamped to clothes using the spring's compression function.