Exploring the Different Kinds of Springs in CNC Machining(snap-fits Frank)

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In the world of CNC machining, springs play a crucial role in various applications. These mechanical devices are designed to store energy and release it when needed. They find extensive use across industries due to their ability to absorb shocks, support weight, regulate pressure, and much more. In this article, we will delve into the different kinds of springs used in CNC machining and explore their production process.

1. Compression Springs:

Compression springs are widely used in CNC machining for their ability to resist compressive forces. These helical-shaped springs absorb energy by shortening under load, returning to their original length once the force is removed. In manufacturing compression springs, high-quality steel wire or alloy materials are wound around a cylindrical form using advanced CNC machinery. The resulting springs can be customized based on wire thickness, coil diameter, and spring pitch, allowing for flexibility in meeting specific application requirements.

2. Extension Springs:

Extension springs work oppositely to compression springs, expanding in response to tensional forces. Commonly found in trampolines, garage doors, farm equipment, and toys, these springs offer reliable extension and motion control. Produced through precision CNC machining techniques, extension springs are formed from tightly wound coils with loops at each end. Various materials like stainless steel, music wire, or even non-metallic options can be utilized to create extension springs that cater to specific needs.

3. Torsion Springs:

Torsion springs provide rotational force, making them suitable for applications where angular movement is required. For instance, torsion springs are commonly seen in clothespins, door hinges, and even mousetraps. Manufacturing torsion springs involves creating a sturdy wire-form shape, usually with two “legs” or ends. These legs can then be attached to other components, enabling rotational action. With CNC machining, precise dimensions and consistent coiling make torsion springs highly reliable and efficient.

4. Die Springs:

Die springs are heavy-duty mechanical devices primarily used in tooling applications. These robust springs can withstand high-compression loads while maintaining their shape and functionality over extended periods. Manufactured using quality spring steel or other durable alloys, die springs go through CNC machining processes to ensure exceptional precision and longevity. Their distinct rectangular shape helps absorb shock and handle heavy forces, making them ideal for stamping, forming, and punching operations.

5. Wave Springs:

Wave springs, also known as wave washers or crescent springs, offer space-saving alternatives to traditional coil springs. With unique wavy shapes that allow elastic deformation, these springs provide both axial and radial load-bearing capabilities. In CNC machining, wave springs find utility in various industries such as automotive, aerospace, and medical equipment manufacturing. The production of wave springs involves CNC machining techniques that create precise waves and contours on flat circular materials, resulting in compact yet effective springs for specific applications.


The world of CNC machining encompasses a wide variety of springs designed for different functionalities. From compression and extension springs to torsion, die, and wave springs, each type has its own construction process and applications. By utilizing advanced CNC machinery and high-quality materials, manufacturers can produce springs tailored to meet diverse industry requirements. Understanding the various kinds of springs available in CNC machining is essential for engineers, designers, and manufacturers seeking optimal performance, durability, and cost-effectiveness in their projects. CNC Milling CNC Machining