Die springs are critical to efficient, precise stamping processes. Available in many loading classes and sizes, Ready Supersprings are a durable and versatile option for any stamping application.
As an industry leader in stamping die equipment, Ready Technology offers an extensive selection of metal coil die springs to suit any application and production volume. Learn more about our line of interchangeable metal coil Supersprings for stamping.
What is a Die Spring?
Die springs are one of several components used in a die set for metal stamping operations. They are heavy-duty compression springs that store energy and apply force to assist as the upper and lower halves of the die close and open repeatedly.
Ready Supersprings are traditional die springs, made from vacuum degassed, valve spring quality alloy steel wire. The wire is coiled by CNC machines to the desired diameter, then the ends are ground smooth and closed to ensure the spring can stand flat and stable on either end.
Our springs are made from rectangular wire that actually has a trapezoidal cross section. As trapezoidal wire is coiled its cross section changes to a D shape, which has a lower maximum stress level during compression. This optimal shape contributes to a longer service life.
Selecting the Right Die Spring for Your Application
Choosing the right spring for an application starts with an assessment of the material being stamped, its thickness, and the complexity or intricacy of the stamped features. The next step is to consider these spring characteristics:
- Load classification and stamping force required
- Compressed length
- Free (i.e., uncompressed length)
- Hole and rod diameter
- Desired preload compared to total load and length of deflection
To maximize spring service life, aim to increase the ratio of preload to total deflection. A higher ratio improves spring life. Another way to improve spring life is to minimize the ratio between total deflection and free length. One option is drilling spring pockets deep enough to use the next longer spring.
Metal coil springs are rated for different loads as follows:
- Light load springs. These are painted green and designed for light load applications that require minimal force.
- Medium load springs. These are painted blue and have a moderate load capacity for applications that require a medium amount of force.
- Heavy load springs. These are painted red and are used with heavy loads and substantial forces. They are commonly used in metal stamping and pressing to open the press between cycles.
- Extra heavy load springs. These are painted yellow and are designed for applications that require extremely high force. They have the highest load capacity range among die springs.
Ready’s metal coil springs are manufactured to industry standards in accordance with ISO 10243 for dimensions (in inches), load ratings, and color coding. All Supersprings are interchangeable and are manufactured with uniform dimensions across the colors. As a result, they are easily swapped when a different load rating is needed, for maximum versatility within this single product line. Learn more in our die spring catalog.
Choose Ready Supersprings
Selecting the right die springs is all about the combination of spring dimensions, load rating, and preload. It’s also the difference between durable, cost-effective stamping and excessive downtime from frequent spring replacement.
At Ready Technology, we offer top quality metal coil springs as well as nitrogen gas springs, die sets, rotary benders, guiding elements and more for metal stamping. Contact us to learn more about all of our die spring options, or request a quote to get started today.