TORSION SPRINGS

We produce and design both small torsion springs, with wire diameters of 0.30 mm, and large ones with wire up to 32.0 mm, as per customer specifications, even with variable geometries.
 
Applications:
Spare parts, valves, mechanics in general, model making, toys, musical instruments, naval, lighting, food, door communication, biomedical, oenological and much more.

Standard Materials:
carbon steels, alloy, stainless steel

Diameters of wire ø: 0.10 mm to 32.00 mm
(for larger diameters we use external qualified suppliers)

Surface treatments:
Shot blasting, Sandblasting, Oiling, Galvanics in general and Painting

TORSION SPRING PARAMETERS

  • d (wire diameter): this parameter indicates the thickness of the wire used to produce the spring.
  • Dd (Tree): this parameter corresponds to the maximum diameter of the shaft that can be introduced into the spring. The tolerance for this parameter is +/- 2% (indicative).
  • Di (Internal diameter): The internal diameter of a spring can be calculated by subtracting twice the diameter of the wire from the outside diameter of the spring. the internal diameter of the spring decreases up to the size of the shaft during its use. The tolerance for this parameter is +/- 2% (indicative).
  • of (Outside diameter): the outside diameter of a spring can be calculated by adding twice the diameter of the wire to the inside diameter of the spring. The outer diameter of the torsion spring decreases during use. The tolerance for this parameter is +/- 2% with a tolerance of +/- 0, 1 mm.
  • L0 (Body Length): CAUTION: Body length decreases during use of the spring. The tolerance for this parameter is +/- 2% (indicative).
  • Ls (length of branches): this length is measured from the center of the body to the top of the branch. The tolerance for this parameter is +/- 2% (indicative).
  • An (Maximum Angle): Maximum rotation angle (in degrees) of the spring. The tolerance for this parameter is +/- 15 degrees (indicative).
  • Fn (Maximum Force): maximum force that can be applied to the end of a branch. The tolerance for this parameter is +/- 15% (indicative).
  • Mn (Maximum moment): maximum acceptable moment (Newton * mm). The tolerance for this parameter is +/- 15% (indicative).
  • R (angular stiffness): this parameter determines the resistance exerted by the spring, during its use. The unit of angular stiffness is the newton * mm / degree. The tolerance for this parameter is +/- 15% (indicative).
  • A1 & F1 & M1: (Angle at a time or a force): the next equation calculates the angle according to the moment: A1 = M1 / R. to calculate the moment from the force, the following equation is used: M = F * Ls
  • Free position of branches: there are 4 types of branches free position: 0, 90, 180 or 270 degrees (see image above).
  • Winding direction: a right-hand winding allows counter-clockwise torsion movement. A left-hand winding allows a clockwise twist movement. The two types are available for each code.
  • Code: all the springs are identified by a unique code: type. (De * 10). (d * 100). (N * 100). for springs with right-hand winding, the type corresponds to the letter D. For springs with left-hand winding, the type corresponds to the letter G. The letter N indicates the number of turns. Example: code D.028.020.0350 is a torsion spring with right-hand winding, external diameter of 2, 8 mm, made of 0, 9 mm stainless steel wire and made up of 3, 5 turns.