Torsion springs are a specific type of spring that reacts to rotational forces called torque. Torsion springs exert torque in a circular or rotating arc with the spring arms rotate about the central axis. They can store and release angular energy or statically hold a mechanism in place by deflecting the legs about the body centerline axis. They offer resistance to twist or rotationally applied force. The legs can be at any position and have virtually any bend twist or loop in them. The stress is in bending, not in torsion. A rotational spring of this type will reduce in body diameter and increase slightly in body length when deflected in the preferred direction of the fabricated wind. Depending on the application, torsion springs can be designed to work in a clockwise or counter-clockwise rotation, thus determining the direction of the wind. This type of wire spring is most often used with forces of rotation similar to those found in a motor or drive unit with a rotating shaft or something as simple as a clothespin. In either application the wire is formed to provide resistance to torque, thus the name torsion spring.
Double torsion springs are a type of torque spring that has two coils separated by a space to minimize friction. These consist of a right-hand and a left-hand coil section connected together and working in parallel. The sections are designed separately with the total torque exerted being the sum of the two, thus called double torsion springs.
How a spring reacts to torque or rotational forces depends on how the custom torsion spring is designed. The problem being that the combination of formulas, wire sizes and shapes can provide an endless selection of torque springs to choose. This can further be complicated by ordering stock or custom torsion springs to best solve the application solution.
Ace Wire Spring & Form solves this problem by providing design assistance to our customers and assists them in designing the right torque spring for their specific application. With our manufacturing process and skilled craftsman we can provide stock or custom torsion springs in any quantity and still provide the fast turnaround time and consistent quality usually associated with only large production runs.
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Graphic layout of Torsion Springs Specifications
Short Hook Ends
Torsion Springs Trivia Questions and Answers
Q) What are helical torsion springs? A) It is a metal rod or wire in the shape of a helix (coil) that is subjected to twisting about the axis of the coil by sideways forces (bending moments) applied to its ends, twisting the coil tighter.
Q) What do torsion springs do? A) The ends of the torsion springs are attached to other components, and when those components rotate around the center of the spring, the spring tries to push them back to their original position. The torsion springs are subjected to bending stress. They can store and release angular energy or statically hold a mechanism in place by deflecting the legs about the body centerline axis.