JS Snake spring coupling in two shapes

JS snake spring coupling is a kind of structural innovation of metal transmission parts. The snake-like spring coupling of this model relies on the snake-like spring piece to transfer torque. At present, the coupling component is a common shaft connection transmission component used in the mechanical field in various regions, and also a very common shaft connection transmission component.

JS snake spring coupling is divided into two kinds of transverse stiffness and variable stiffness, mainly depends on the following two shapes of teeth in contact with the spring:
One is: JS snake spring coupling tooth shape is linear: in normal load, the distance between the snake spring and the tooth contact point does not change with the change of the snake spring deformation, the stiffness is constant, the relative Angle of the two halves of the coupling and the torque is linear, belonging to the constant stiffness snake spring coupling.
Two is: JS snake spring coupling gear curve type: load is small, the linear part of the snake spring and the connected axis is basically parallel; When the load increases, the deformation of the snake spring increases, the contact arc with the teeth also increases, and the distance between the contact point and the teeth becomes shorter and shorter, and the stiffness increases. The relative Angle of the two halves of the coupling has a nonlinear relationship with the torque transmitted, which belongs to the variable stiffness snake spring coupling. Linear tooth shape is easy to process, low cost, but only applicable to the transmission torque change is small working conditions. Curvilinear tooth coupling is suitable for large torque change and positive and negative rotation working conditions, and has a better cushioning effect, but the curvilinear tooth coupling is poor in process and high in manufacturing cost.

How to analyze JS snake spring coupling tooth shape for linear shape or curved shape? In fact, the coupling is currently divided into a group or several groups of snake spring, embedded in the teeth of the two valve coupling flange, in order to achieve the connection of the two halves of the coupling, in order to prevent the snake spring in the centrifugal force and avoid the snake spring and tooth contact dry friction, need to use a closed shell cover, and in the inside with lubricating oil or grease.