Exploring the Different Kinds of Springs and their Applications in CNC Machining(aluminum 6061 vs 7075 Sandy)

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CNC machining is a revolutionary technology that has transformed various industrial sectors, aiding in efficient manufacturing processes. Among the many crucial components used in CNC machines, springs play an indispensable role. Springs are mechanical devices designed to store potential energy and release it when needed. In this article, we will delve into the world of springs and explore the different types commonly utilized in CNC machining along with their applications.

1. Compression Springs:
Compression springs are widely used in CNC machining due to their ability to resist compressive forces. These springs are made from helically coiled wires and can be found in various sizes and shapes. The primary purpose of compression springs is to absorb shock or maintain pressure between two contacting surfaces. They find considerable application in CNC machining for maintaining uniform pressure on cutting tools, ensuring accurate operations.

2. Extension Springs:
Extensively employed in CNC machinery, extension springs have a close resemblance to compression springs, but their coils are designed to expand under tension rather than compressing. These springs work by absorbing and storing energy as they extend, allowing them to retract and provide force once the load is removed or reduced. In CNC machining, extension springs are often utilized in holding fixtures, supporting movable parts and returning tool heads to their initial positions.

3. Torsion Springs:
Torsion springs are known for their unique design, typically consisting of a helical coil with arms located at each end. While in operation, these springs exert torque in response to an applied rotational force, enabling them to return to their original position when the force is released. In CNC machining, torsion springs find application in rotary mechanisms, such as opening and closing doors, lids, and hatches, adding flexibility while reducing stress on other components within the system.

4. Constant Force Springs:
Constant force springs offer a consistent amount of force over a specific range of motion. These springs are manufactured by tightly winding a thin strip of steel onto a drum. As the spring is extended or retracted, it unrolls from one end while winding up on the other, leading to an almost constant force output. CNC machining utilizes constant force springs in various applications that require smooth and continuous tension, such as cable management within the machinery.

5. Wave Springs:
Wave springs are increasingly gaining popularity in CNC machining due to their unique design and high reliability. These flat-coiled springs have wave-shaped profiles, ensuring precise force control within limited spaces. The ability of wave springs to offer similar performance as traditional round wire springs, but with reduced axial height, makes them ideal for use in compact CNC machines where space is crucial. Wave springs find applications in precision assemblies, ball bearings, couplings, and rotary seals within CNC systems.


Springs are essential components used in CNC machining to ensure efficient functionality and accurate operations. By understanding the different types of springs available, including compression, extension, torsion, constant force, and wave springs, manufacturers can make informed decisions regarding their usage based on specific requirements. From maintaining pressure on cutting tools to enabling smooth movement and mitigating stress, springs play a vital role in enhancing the overall performance of CNC machines. CNC Milling