Exploring the Diversity of Springs in CNC Machining(sheet metal manufacturing Lisa)

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Springs play a vital role in many mechanical devices, providing elasticity and restoring force. In the world of CNC machining, springs find application in various industries, ensuring efficient operation and enhanced product functionality. This article aims to explore different kinds of springs used in CNC machining and how they contribute to the production process.

1. Compression Springs:
One of the most common types of springs used in CNC machining is compression springs. These springs are designed to resist compressive forces and can be found in multiple applications such as automotive suspensions, assembly mechanisms, and hydraulic systems. By absorbing shocks and maintaining stability, compression springs enhance the overall performance of machinery components.

To produce compression springs through CNC machining, precise wire forming techniques are employed. The machine bends the wire along specific contours and gradually applies pressure until the desired spring shape is achieved. This process ensures consistency and accuracy throughout the manufacturing process.

2. Extension Springs:
Extension springs work opposite to compression springs, offering resistance against pulling or tensile forces. They commonly feature in door hinges, garage doors, and trampolines. These springs allow for controlled extension while exerting a restorative force upon retraction.

By utilizing CNC machines, manufacturers can produce extension springs with precise dimensions and high levels of repeatability. The process involves tightly winding steel or stainless-steel wire around a mandrel, creating tension perfectly suited to meet any design requirements.

3. Torsion Springs:
Torsion springs store rotational energy and apply torque when twisted, typically finding application in clothespins, clipboards, and mouse traps. Designed to withstand angular deflection, torsion springs provide critical assistance in controlling movement and resisting external forces.

CNC machining plays an essential role in crafting torsion springs accurately. By rotating a mandrel and guiding wire into a spiral form, CNC machines create torsion springs that possess uniformity, ideal torque, and efficient strength.

4. Constant Force Springs:
Constant force springs are unique due to their ability to generate a consistent force throughout their extension without any decrease in energy. These springs are commonly used in applications such as scales, tape measures, and window blinds.

Manufacturing constant force springs using CNC machining requires precision roll forming. The process involves bending thin strips of metal into tightly wound coils while controlling the forces applied at each step. This ensures conformity to design parameters for superior performance.

5. Belleville Washers:
While not technically considered springs, belleville washers provide similar benefits by acting as spring-like devices. They help manage axial thrust and compensate for thermal expansion or sudden shocks. Common uses include bolted joints, valves, and fuel injection systems.

CNC machining plays a crucial role in producing accurate and reliable belleville washers. Computer-controlled machines apply precise die-cutting techniques to create these spring washers with consistent dimensions and stable performance.


Springs offer numerous advantages in CNC machining processes, enabling machinery to function efficiently and handle various loads effectively. Compression springs, extension springs, torsion springs, constant force springs, and belleville washers all play integral roles in different applications within multiple industries. By leveraging the capabilities of CNC machining technology, manufacturers can ensure the production of high-quality springs that meet specific requirements regarding size, shape, and functionality. CNC Milling