Exploring the Different Types of Springs and Their Applications in CNC Machining(cnc mills and lathes Alva)

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Springs play a crucial role in various industries, including CNC machining. These mechanical devices store energy when compressed or stretched and release it to absorb shocks or maintain equilibrium. With advancements in technology, springs now come in a wide range of designs and materials to address specific applications. In this article, we will delve into the different kinds of springs used in CNC machining and explore their significance.

1. Compression Springs:

Compression springs are widely used in CNC machining due to their ability to resist compressive forces and provide uniform pressure. They are typically made from stainless steel or high-carbon steel. The manufacturing process involves coiling heated wire around a cylindrical mandrel, followed by heat treatment to enhance durability. Finished compression springs find applications in valves, actuators, automotive suspension systems, and more.

2. Extension Springs:

As the name implies, extension springs work by extending under tension. They possess hooks at both ends to attach to other components. CNC machines often employ extension springs as counterbalancing devices, providing equal force throughout the operation. These springs are manufactured using the same technique as compression springs but with additional looping to form the desired hooks. Industries like aerospace, robotics, and healthcare benefit from the versatility of extension springs.

3. Torsion Springs:

Torsion springs function by exerting torque on rotating objects. They are commonly used in CNC machining to ensure smooth and precise movements. Torsion springs are designed to either wind up or unwind depending on the applied rotational movement. Manufacturers produce them by tightly winding tempered steel wires into coils. Examples of torsion spring applications in CNC machining include hinges, clutches, and electrical switches.

4. Belleville Washers:

Belleville washers, also known as disc springs or conical washers, are specialized springs found in many CNC machining processes. These unique springs take the shape of a cone and are known for their ability to maintain a constant load under varying conditions. Belleville washers store energy by flattening as the load is applied, absorbing shocks and preventing loosening or leakage. They find applications in bolted connections, bearing preloads, and pressure relief valves.

5. Wave Springs:

Wave springs are an alternative to traditional compression springs, offering reduced axial space requirements while providing similar force characteristics. These compact springs consist of multiple flat coils that create a wave-like pattern. CNC machining often utilizes wave springs in tight spaces where conventional springs may not fit. Their applications include medical devices, aerospace components, and instrumentation.

6. Constant Force Springs:

Constant force springs provide a uniform amount of force throughout their entire deflection range. These springs are typically thin strips of high-carbon steel carefully wound onto a drum. The winding process ensures that the spring exerts a consistent pulling force regardless of its extension length. In CNC machining, they are employed in retractable cords, window counterbalances, and cable management systems.


The world of CNC machining relies heavily on different types of springs, each designed to cater to specific needs and functions. From compression and extension springs to torsion and innovative designs like Belleville washers, wave springs, and constant force springs - these mechanical wonders contribute significantly to the smooth operation and performance of CNC machines. Choosing the correct spring type based on varied application requirements is crucial for achieving optimal results in any CNC machining project. CNC Milling