Volute Springs

A volute spring is a type of compression spring that is designed to compress when a force is applied to it. It is called a "volute" spring because of its distinctive shape, which resembles a spiral or scroll. Volute springs are made by winding a strip of material, typically steel or another metal, around a mandrel in a spiral pattern. As the strip is wound, it gradually forms a helical spring with a circular cross-section. The ends of the strip are then cut and ground flat to create a stable base for the spring. Volute springs are often used in applications that require a high load capacity and a long cycle life, such as in heavy machinery, automotive suspension systems, and shock absorbers. They are known for their durability, high strength, and resistance to fatigue and stress.

Product Description

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 or strength.

Uses of Volute Spring

A volute spring is a type of compression spring that is made by coiling a flat strip of material, such as steel or bronze, in a spiral shape. The cross-section of a volute spring is typically circular, and its shape resembles that of a snail shell. Here are some common uses of volute springs:

• Locks and latches: Volute springs are commonly used in locks and latches to provide the necessary tension to keep the lock in place or to keep the latch closed.
• Electrical switches: Volute springs are used in electrical switches to provide the necessary force to make or break an electrical connection.
• Automotive applications: Volute springs are used in various automotive applications, such as clutch mechanisms and engine valves, to provide the necessary force to operate these components.
• Industrial equipment: Volute springs are used in various industrial equipment, such as conveyor belts and assembly lines, to provide the necessary tension to keep the equipment running smoothly.
• Medical devices: Volute springs are used in various medical devices, such as surgical instruments and diagnostic equipment, to provide the necessary force to operate these devices.
• Aerospace applications: Volute springs are used in various aerospace applications, such as satellite deployment mechanisms and landing gear, to provide the necessary force to operate these components.

Formula of volute spring

The formula for a volute spring depends on various factors such as the material used, the dimensions of the spring, and the desired properties of the spring. However, here are a few common formulas used to calculate some of the key parameters of a volute spring:

1. Spring rate (k):

Spring rate is a measure of the amount of force required to compress the spring by a certain distance.

The formula for spring rate of a volute spring is:

k = G * (D^4 - d^4) / (8 * D^3 * n)

Where:

• G = Shear modulus of the spring material
• D = Mean diameter of the spring
• d = Wire diameter of the spring
• n = Number of turns in the spring

2. Free height (H0):

The free height of a spring is the height of the spring when it is not under any load.

The formula for free height of a volute spring is:

H0 = n * t

Where:

• t = Thickness of the material used to make the spring

3. Solid height (Hs):

The solid height of a spring is the height of the spring when it is fully compressed.

The formula for solid height of a volute spring is:

Hs = H0 - (D - d) * n

Where

• D = Mean diameter of the spring
• d = Wire diameter of the spring
• n = Number of turns in the spring

The spring rate is usually expressed in pounds per inch (lb/in) or Newtons per millimeter (N/mm).