The function of the spring mainly includes cushioning and damping, controlling the movement of the mechanism, storing and output energy, and measuring the size of the force. The spring can absorb and reduce the shock and vibration in the mechanical system, such as the damping spring under the car, the train car, the buffer spring of various buffers, etc. These applications help to reduce the shock and vibration in the mechanical movement, and protect the safety of equipment and personnel. The spring plays an important role in the movement of the control mechanism, such as the valve spring in the internal combustion engine, the control spring in the clutch, etc., which can accurately control the movement of the mechanical parts to ensure the normal operation of the equipment. Springs can store energy and release it when needed, such as clock springs, gun latch springs, etc. These applications use the spring's elastic potential energy to drive mechanical motion or accomplish a specific task. Spring scales and force gauges in the spring is used to measure the size of the force, through the deformation of the spring to reflect the strength of the force, widely used in a variety of accurate force measurement occasions.
