Torsion springs belong to spiral springs. The end of the torsion spring is fixed to other components, and when the other components rotate around the center of the spring, the spring pulls them back to their initial position, generating torque or rotational force. A torsion spring can store and release angular energy or statically fix a device by rotating the force arm around the central axis of the spring body.
These types of springs are usually compact, but there is a pitch between the coils to reduce friction. They generate resistance to rotation or external forces. According to the application requirements, design the rotation direction of the torsion spring (clockwise or counterclockwise) to determine the rotation direction of the spring.
Main Parameter
D (Spring wire diameter): This parameter describes the diameter of the spring wire.
Dd (maximum diameter of the spindle): This parameter describes the maximum diameter of the spring shaft in industrial applications, with a tolerance of ± 2%.
Di (inner diameter): The inner diameter of the spring is equal to the outer diameter minus twice the wire diameter. During the working process, the inner diameter of the torsion spring can be reduced to the diameter of the spindle,
Inner diameter tolerance ± 2%.
De (outer diameter): equal to the inner diameter plus twice the wire diameter. During the working process, the outer diameter of the torsion spring will decrease, with a tolerance of (± 2% ± 0.1) mm.
L0 (natural length): Note that the natural length will decrease during operation, with a tolerance of ± 2%.
Ls (support length): This is the length from the axis of the spring coil body to the spring support, with a tolerance of ± 2%.
An (maximum torsion angle): The maximum torsion angle of the torsion spring, with a tolerance of ± 15 degrees.
Fn (maximum load): The maximum force allowed to act on the torsion spring support, with a tolerance of ± 15%.
Mn (maximum torque): maximum allowable torque (Newton * millimeters), with a tolerance of ± 15%.
R (Spring stiffness): This parameter determines the resistance of the spring during operation. Unit: Newton * millimeters/degree, with a tolerance of ± 15%.
A1&F1&M1: (Torsion angle, load and torque): The following formula can be used to calculate the torsion angle A1=M1/R. Knowing the load, the torque can be calculated using the formula M=F * Ls.
Support position: The support of the torsion spring has four positions: 0 °, 90 °, 180 °, and 270 ° (please refer to the above figure).
Spiral direction: The right-handed spring rotates counterclockwise, while the left-handed spring rotates clockwise. All of our springs can be produced in both directions of rotation.
Spring part number: Each type of spring has a unique number: category (De * 10) (d * 100) (N * 100) For right-handed springs, the relevant mark is D. For left-handed springs, the relevant mark is G. The N symbol represents the number of turns. For example: D.028.020.0350 part number represents a right-handed torsion spring with an outer diameter of 2.8 mm and a stainless steel wire diameter of 0.9 mm, with a total of 3.5 turns.
