One of the daily challenges for springmakers/coilers is the adjustment needed to yield nominal rate. As all spring manufacturers know, the only bill of material for a spring is the material used to make the part. That very material has a list of properties that vary...
In the article titled “Rate Formula – For Those With Calipers,” I gave the example of the math needed to determine the rate of a submitted spring sample. With a few physical dimensions, we were able to calculate the rate. Our example had the following dimensions: d...
Many times, I have received samples instead of a blueprint for quoting purposes. It is common to slip out to the QA department and have the spring tested for rate. However, there is another way to calculate the spring rate if you have a set of dial calipers handy....
Of all the things engineers solve in their careers, the most challenging is material fatigue and breakage. No matter what product a customer markets or the level of sophistication and imagination echoing through their halls, the question is the same … “why did the...
