Slider couplingThe material of the parts can be 45 steel, and the working surface needs to be heat treated to increase its hardness; Q275 steel can also be used when the requirements are lower, without heat treatment.In order to reduce friction and wear, oil should be injected from the oil hole of the middle plate for lubrication during use.Because the half-coupling and the intermediate disc form a moving pair and cannot rotate relative to each other, the angular velocity of the driving shaft and the driven shaft should be equal.However, when working with relative displacement between the two shafts, the middle disk will generate a large centrifugal force, which will increase the dynamic load and wear.Therefore, pay attention to the working speed not greater than the specified value when selecting.This kind of coupling is generally used at a rotation speed n<250r/min, where the shaft stiffness is relatively large and there is no severe impact.
The sliding block coupling can eliminate the additional load between the shafts during the automatic control of the motor. The coupling can realize the integration of slip and rotation; in the case of equal turning diameter, the shortest dimension is much smaller than the cross shaft.Improve the uniformity of load distribution on the working surface, and can transmit larger torque, but the elasticity is slightly reduced.