The torsion spring (torsion spring) utilizes the principle of the lever, and has great mechanical energy by twisting or rotating the elastic material with soft material and high toughness. It is a spring that is subjected to torsional deformation. Its working part is also a circle, either closely or separately. The end structure of the torsion spring is a torsion arm processed into various shapes, from single to double twist, and even to various deformations of the torsion bar, which can be molded according to design. Torsion springs are often used in mechanical balance mechanisms and are widely used in industrial production such as automobiles, machine tools, and electrical appliances.
The compression spring (compression spring) is a helical spring that withstands axial pressure.
Generally divided into equal-pitch springs and variable-pitch springs, the compression springs have the following shapes: cylindrical, conical, convex and concave, and a small amount of non-circular, etc. In the gap, the spring shrinks and deforms when it is subjected to an external load, and stores deformation energy. Variable-pitch springs are becoming more and more popular. They are not just equal-pitch springs. Variable-pitch springs can play different roles in different environments.