Spring classification:
1, according to the nature of the force can be divided into: compression springs, extension springs, torsion springs, bending springs;
2, in accordance with the shape can be divided into: coil springs, volute springs, plate springs, disc springs, annular springs, abnormal springs, etc.;
3, in accordance with the production process can be divided into the cold-rolled spring, hot-rolled spring;
4, according to the production material can be divided into metal springs, plastic springs, rubber springs and other materials spring.
The main functions of springs are:
One, to control the movement of machinery, common control springs in clutches and valve springs in internal combustion engines, etc.;
Two, to absorb vibration and shock energy, common sofa seat springs, buffer springs under the train compartment and vibration-absorbing springs in the coupling, etc.;
Three, the storage and output energy as power
Three, the storage and output of energy as power, common for clock springs, firearms in the spring, etc.;
Four, force measuring elements, force gauge, spring scale, etc..
Extended information:
Metal springs existed for a long time in the Bronze Age. Even though metal, wood was used as a structural component for flexible bows and military catapults. During the Renaissance, precision clocks and watches made precision springs a necessity for the first time. The fourteenth century saw the development of precision clocks that revolutionized astronomical navigation. The exploration and conquest of the world by European colonial powers continued to provide the impetus for the watchmaker's "science and art. Firearms are another area that drives the development of springs. At the dawn of the Industrial Revolution in the eighteenth century, the need for large, accurate, and inexpensive springs was introduced. Given that watchmakers' springs were often handmade, springs were mass-produced from piano wire or similar materials. Advanced manufacturing methods made springs ubiquitous. Computer-controlled wire and sheet bending machines allow for customized processing of springs, which is obviously a specialized type of machinery. A spring is just an accumulator; it has the ability to store energy, but it can't slowly release it.
Reference:
Baidu Encyclopedia-Spring (mechanical part with elasticity)