Why use a coupling?

2022-06-25 09:06

1. Rotational power transmission

The core function of the coupling is to transmit the power and motion of the drive shaft (motor) to the driven shaft.

 

 

2. Absorb the deviation between the drive shaft and the driven shaft

The installation deviation between the drive shaft and the driven shaft is inevitably caused by the tolerance of mechanical elements, the accuracy and the proficiency of the operator. Deviation is divided into declination, eccentricity and axial deviation, which will cause vibration, noise and load of related mechanical elements. The coupling plays a role in absorbing these deviations. However, the performance of each coupling to absorb the deviation value is different, please refer to the specification table.

 

 

3. Shock, vibration and noise absorption

When the equipment is driven, vibration and impact will be generated. At this time, the impact will be directly transmitted to the motor, reducer or screw, which will not only cause problems in mechanical properties, but also purchase parts for repair at high prices. The coupling acts to absorb these shocks and vibrations. All types of couplings except high rigidity have the function of absorbing shock, vibration and noise. Relatively speaking, the absorption capacity of the rubber coupling with the buffer function of the intermediate body will be better.

 

 

4. Cut off the heat and micro-current generated on the drive shaft

The motor will generate heat during long-term operation, and occasionally a small current will be released. When it is transmitted to the driven shaft, it will cause thermal expansion (deformation) of the part, resulting in a decrease in accuracy. The coupling acts to cut off the heat and current generated on the drive shaft.

 

 

5. Improve equipment performance

In terms of high elastic rubber coupling, it has excellent shock absorption performance, which can relatively increase the gain value of the servo motor, shorten the setting time and improve the equipment efficiency.