What is a coil spring?

What is a coil spring?

The coil spring, the torsion spring, is a spring that is subjected to torsional deformation. Its working part is also tightly wound in a spiral. The end structure of the torsion spring is machined into various shapes of the torsion arms, not the hook rings. Torsional springs are commonly used in machinery in the balance of institutions, in the automotive, machine tools, electrical and other industrial production is widely used.