Hello. Please consult us about a torsion coil spring. We prototyped a torsion coil spring with a maximum torque of 100 Nm (wire diameter Φ9, the total number of coils 4, angle 70°), but since it does not have a guide, the spring deforms or the center of the spring shifts and the guide bar (iron) is worn.
Please tell me how to attach a guide well or just how to attach a guide.
Also, I am thinking of using a flat spiral spring to replace this spring and prevent the spring from deformation, but is it possible to make a prototype of a spring of this size? (Equal-pitch flat spiral spring)
As for the guides of the torsion coil springs, I think that if the shaft is inserted in the inner diameter and the clearance between the inner diameter of the coil and the shaft is small, the deformation will disappear.
Also, the calculated stress at the maximum torque of 100Nm exceeds the allowable stress, so it must be kept low.
For the flat spiral spring, a separate mounting case (housing) is required when using this spring, so we still recommend a torsion coil spring in this case!
