1. Control the movement of machinery, such as valve springs in internal combustion engines, control springs in clutches, etc.
2. Absorb vibration and shock 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 force measuring elements, such as force testers, springs in spring scales, etc. The ratio of load to deformation of the spring is called the spring rate, and the greater the stiffness, the harder the spring.
5. It has the function of increasing the driving force and converting the driving force to or the tool clamping force.
6. It has high repeatability without reducing the machining accuracy and making the workpiece not damaged.
7. It has the ability to work in a wide spindle speed range with only a small loss of clamping force, and the moment of inertia in high-speed cutting is small.