Coupling and clutch distinction

Coupling and clutch are mainly used to connect two shafts, transfer motion and torque parts, they can also be used for shaft and other parts of the connection and two parts of the mutual connection. The two shafts or driving parts connected by the coupling can only be separated by disassembly when the machine is stopped; With clutch connection, they can be easily separated or joined in operation of the machine. In addition, they can be used as stabilizers to prevent the machine from running.
Coupling is divided into rigid and flexible two major categories. The rigid coupling is composed of rigid force transmission parts, which is suitable for the place where the two axes are strictly aligned and no relative displacement occurs when working. Flexible coupling is suitable for the two axes have offset or when working relative displacement. Flexible coupling is divided into inelastic components, metal elastic parts and non-metallic elastic components, the last two are collectively referred to as elastic coupling, they have the effect of vibration absorption, mitigate impact.
Large K value should be selected for rigid coupling and toothed clutch; Choose a smaller K value for the coupling or clutch; The intermediate value can be used for elastic coupling and friction clutch.