Exploring the World of Springs in CNC Machining(steel vs iron Everley)

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Springs play a significant role in various industries and applications, providing mechanical support, flexibility, and shock absorption. In the realm of CNC machining, springs find wide-ranging usage, enhancing precision and efficiency. This article delves into the different kinds of springs used in CNC machining while highlighting their production processes and essential features.

1. Compression Springs:

Compression springs are widely utilized in CNC machining due to their ability to store and release energy under compression. These helical-shaped springs provide resistance against applied forces, returning to their original form when the load is removed. Producing compression springs involves methods such as hot or cold coiling, where wire material is wound around a central rod, forming a tightly wound coil.

2. Extension Springs:

Extension springs, also known as tension springs, operate by resisting stretching forces. They often find application in CNC machining setups where they help retract certain components or maintain stable positioning. The production process for extension springs is similar to that of compression springs, involving winding wire in a tightly coiled manner. However, instead of being compressed, extension springs are stretched lengthwise upon installation.

3. Torsion Springs:

Torsion springs excel at producing rotational force and maintaining equilibrium between two objects. These springs rely on torque generated by twisting their ends along a central axis. In CNC machining, torsion springs can be found assisting in cutting tools, clamps, and even robotic arms. Manufacturing torsion springs requires specialized machinery to precisely twist the wire without compromising its structural integrity.

4. Constant Force Springs:

Constant force springs offer consistent linear force across their operating range, making them valuable in applications requiring uniform motion and tension control. They comprise a pre-stressed strip of metal tightly wound onto a drum or cylinder. As it unwinds, the spring imparts an almost constant force without experiencing any noticeable change in stress distribution. CNC machining utilizes constant force springs in various mechanisms for smooth and reliable operations.

5. Die Springs:

Die springs are heavy-duty compression springs commonly used in CNC machining applications involving high loads, vibrations, and harsh environments. They possess a rectangular cross-section, allowing them to withstand greater stress while maintaining stability. These springs find extensive use in tool and die setups, stamping machines, and clamping devices within CNC machining processes. The production of die springs involves precision coiling of round wire into the specified rectangular shape.


Springs of different types play diverse roles in CNC machining, enabling enhanced functionality, accuracy, and efficiency across various industries. Understanding the characteristics and production processes associated with compression springs, extension springs, torsion springs, constant force springs, and die springs can help manufacturers optimize their designs and ensure optimal performance within CNC machining settings. Whether it is providing support or absorbing shocks, springs remain an indispensable component in the world of precision engineering. CNC Milling CNC Machining