Exploring the Different Kinds of Springs in CNC Machining(有色 金属 Jocelyn)

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Springs play a crucial role in various mechanical applications, providing elasticity and restoring force. In the world of CNC machining, springs find extensive use in diverse industries, ranging from automotive to aerospace. This article delves into the different kinds of springs used in CNC machining processes, exploring their production methods and highlighting their significance.

1. Compression Springs:
Compression springs are widely employed due to their ability to store potential energy when compressed. These springs offer resistance to external forces while absorbing shocks and vibrations. Typically made from materials like stainless steel or carbon steel wire, compression springs can be produced using CNC coiling machines. The machine guides the wire through a series of rollers, which shape it into a helical coil according to precise specifications.

2. Extension Springs:
As opposed to compression springs, extension springs generate a restoring force when pulled apart. These springs are commonly found in garage doors, trampolines, and countless other applications. Producing extension springs with CNC machining involves forming each end of a wire simultaneously, creating loops that can attach to components. Precision control over the pitch and diameter is crucial to ensure the desired spring action.

3. Torsion Springs:
Torsion springs provide rotational force and find applications in objects requiring equilibrium restoration, such as clothespins and mousetraps. These springs resist rotationally applied torque and store energy by increasing their radius. Using CNC machinery, torsion springs are manufactured by bending wires around mandrels to achieve the desired shape and dimensions accurately.

4. Constant Force Springs:
Constant force springs feature a unique design that allows them to exert uniform pressure throughout their entire length. Their constant force remains consistent over elongation, making them ideal for applications such as retractable cords and tape measures. These springs are typically produced by winding flat strips of material onto a drum-shaped core using CNC winding machines. An accurate and tightly controlled process ensures consistency in the spring's force characteristics.

5. Belleville Springs:
Belleville springs, also known as disc springs or conical washers, provide high load capacity in a compact design. These springs stack one upon another to offer increasing loads at different deflections, making them ideal for critical applications such as valves and safety devices. CNC machining facilitates precise manufacturing of Belleville springs by punching out individual discs from sheet metal and subsequently forming them into the desired shape.


Springs are indispensable components in CNC machining processes, offering vital functional properties across various industries. From compression springs that resist external forces to torsion springs that restore equilibrium, each type serves specific purposes. The production of these springs involves meticulous precision and adherence to tight tolerances. Utilizing advanced CNC machining techniques ensures consistent performance, durability, and reliability in these critical mechanical components. With an understanding of the different kinds of springs used in CNC machining, engineers and manufacturers can optimize their designs for maximum efficiency and performance. CNC Milling CNC Machining