Analysis of efficiency of servo planetary reducer

In the traditional no-load torque test of the servo planetary reducer, a torque wrench is installed at the input end of the reducer at normal temperature, and the torque is gradually increased. The output shaft is turned from stationary to rotating, and the torque value is recorded. The torque value will increase from small to large and then decrease. In the test, the output shaft rotates more than 10 revolutions, and the maximum torque value is the no-load rotation torque of the planetary reducer. However, human factors account for a large proportion in this test method. The speed of the torque wrench is difficult to control, and the input speed will directly affect the output torque fluctuation of the reducer. Therefore, it is difficult to observe the small torque change of the reducer.

Servo planetary reducer

This method adopts a set of servo drive system to realize dynamic measurement of mechanical efficiency of servo planetary reducer. A set of servo system is used to test the transmission efficiency of the reducer. It is not necessary to prepare a special test platform. It is only necessary to connect the reducer with an existing set of servo drive device. By measuring and analyzing the torque fluctuation value, the reducer can be inspected and tested.

Method: The computer is connected with the controller and driver, the driver is connected with the motor, and then the motor is directly connected with the servo planetary reducer. Efficiency is an important performance index of the reducer, but the efficiency needs to be measured. Generally, it is difficult to measure the efficiency.

The transmission ratio of the reducer is constant. As long as the torque of the input and output shafts is measured, the deformation of the servo planetary reducer during torque transmission can be measured. As long as the relative torque angle of the two sections of the input shaft (or output shaft), the torque of the servo planetary reducer can be measured.

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