The types of springs are complex and diverse, and can be classified from different angles. The following is a detailed introduction to the types of springs:
Classification by force properties:
Stretch spring: Mainly bears tensile loads, such as the return spring in the ratchet mechanism.
Compression spring: Mainly bears compression loads, such as cylindrical helical compression springs.
Torsion spring: Mainly bears torsion loads, such as used in dynamometers and forced air valve closing mechanisms.
Bending spring: Mainly bears bending loads.
Classification by shape:
Coil spring: It is composed of many spiral steel wires and is the most common type of spring. Including cylindrical helical springs (such as compression springs, stretch springs), conical helical springs, etc.
Cylindrical helical compression spring: The characteristic curve is close to a straight line and the stiffness is stable.
Cylindrical helical stretch spring: The performance is basically the same as that of cylindrical helical compression springs, but it is used in situations where tensile loads are applied.
Conical helical spring: The characteristic curve is nonlinear, which is conducive to eliminating or easing resonance.
Leaf spring: Made of one or more pieces of elastic metal material, such as leaf spring, commonly used in the suspension devices of automobiles, tractors, and trains.
Ring spring: It is composed of multiple outer rings with inner conical surfaces and inner rings with outer conical surfaces, with high buffering, vibration reduction, and energy storage capabilities.
Disc spring: Including ordinary butterfly springs and diaphragm butterfly springs, etc., which are flexible and convenient to use, and have strong buffering and vibration reduction capabilities.
Vortex spiral spring: It can absorb more energy in the same space and is often used in pipeline systems that need to absorb thermal expansion deformation and damp vibration.
Other special-shaped springs: Such as torsion bar springs, magnetic springs, gas springs, wire springs, rubber springs, air springs, magnetorheological springs, memory alloy springs, etc. These springs have special shapes and properties to meet specific application requirements.
Classification by manufacturing process:
Cold coil spring: Springs rolled at room temperature.
Hot coil spring: Springs rolled at high temperatures.
In summary, there are many types of springs, each of which has its own unique performance and application areas. When choosing a spring, you need to choose the appropriate spring type based on the specific conditions of use and requirements.

