(1) Pre-tensioning load: The pre-tensioning load determines the material and wire diameter of the spring, and the size of the adhesion part can be adjusted for the pre-tensioning length.
(2) The outer diameter of the mandrel: The inner diameter of the torsion spring is determined according to the size of the mandrel, but the change of the spring body after twisting needs to be considered, so a proper margin must be reserved.
(3) Starting and ending points of the action: the angular position of the torsion bar with the fulcrum when it is not doing work, the length, form and angle of the torsion bar with the fulcrum can be clearly specified.
(4) Activity stroke load: The design of the compression spring must clearly understand the position to be actuated and the required elastic force. Determine the position and understand the required elasticity, and then determine the material, wire diameter, and number of turns.
(5) Device space: The design of a compression spring must be clearly understood, and the space required for the device spring can be effectively mastered for the basic manufacturing conditions of a compression spring, such as outer diameter, inner diameter, and free length.
(6) Torsion fulcrum: There must be a point when the torsion spring is working. This point can determine the length and form of the torsion bar.
(7) The inner diameter of the device space: If a torsion spring device adopts an embedded type, the embedded space needs to be considered. The space determines the outer diameter, free length, and number of turns of the spring body.
(8) Environmental factors: Springs act in different environments and will be affected by environmental factors, which will affect their service life. Therefore, the designer must consider changes in ambient temperature and humidity. Temperature has a huge impact on the life of the spring. Humidity It is easy to oxidize the spring without surface treatment. Therefore, environmental factors can determine whether the spring needs surface treatment and material selection.
(9) The distance between the two ends: the two ends of the torsion spring will affect the form of the hook and the free length of the tension spring, and the space can determine the size and outer diameter of the adhesion part.