Compression springs are the most widely used type of spring, with the core function of withstanding axial pressure, achieving reset and buffering. The structure is spiral shaped, with one or both ends treated with end faces to ensure uniform force distribution and stable installation. Its performance is mainly determined by parameters such as wire diameter, number of turns, outer diameter, and pitch, and is suitable for various scenarios that require buffering, support, and reset.
The core structure consists of three parts: spring wire, spiral coil, and end face. The spring wire is the core load-bearing component, and the diameter of the wire directly affects the load-bearing capacity and stiffness. The thicker the wire diameter, the stronger the load-bearing capacity; The number of turns of a spiral coil is divided into effective turns and total turns. The effective turns determine the deformation stroke of the spring, while the total turns affect installation stability; The end face is divided into ground flat end face and non ground flat end face. Ground flat end face (single end face ground flat, double end face ground flat) can avoid force displacement and is suitable for high-precision and high load scenarios. Non ground flat end face is mostly used for simple and low precision scenarios.
According to structure and purpose, it can be divided into four categories: cylindrical compression springs, which have simple structure, convenient processing, low cost, and are suitable for most common scenarios (such as home electrical buttons and mechanical equipment support); Conical compression spring, with stiffness gradually increasing with deformation, strong anti deflection ability, suitable for scenarios with limited space and increasing load (such as clutches and safety valves); Drum shaped compression spring, thick in the middle and thin at both ends, suitable for bearing large radial loads to avoid bending under stress, often used in heavy machinery; Olive shaped compression spring, with thin ends and thick middle, suitable for high-precision and small space scenarios (such as precision instruments and electronic devices).
The mainstream adaptation scenarios include: home appliance industry (refrigerator door seals, washing machine buttons, air conditioning valve cores), automotive industry (shock absorbers, clutches, brake systems), mechanical industry (machine tool fixtures, valves, bearing supports), electronic industry (remote control buttons, sensors), which are widely used from simple civilian products to high-end industrial equipment.