Volute springs are a type of compression spring, which means that they are designed to compress and store energy when a force is applied to them. They are called “volute” springs because of their distinctive shape, which resembles a spiral or scroll. The shape of the spring provides a constant radial force over a wide range of deflection, making them ideal for applications that require a high load capacity.
Volute springs are made by winding a flat strip of material, such as steel or another metal, around a mandrel in a spiral pattern. The material is then coiled tightly, forming a helix with a circular cross-section. The ends of the strip are typically ground flat to create a stable base for the spring.
One of the key advantages of volute springs is their ability to provide a high load capacity with a relatively small deflection. This is because the spring is wound tightly, which provides a large amount of surface area for the force to be distributed across. Additionally, the tightly-wound coils of the spring help to prevent it from kinking or buckling under heavy loads.
Volute springs are used in a wide variety of applications, including heavy machinery, automotive suspension systems, and shock absorbers. They are known for their durability, high strength, and resistance to fatigue and stress, and are often favored for their ability to withstand high loads and long-term use without losing their shape.