The power source of industrial robots is generally an AC servo motor because driven by pulse signals, the servo motor itself can achieve speed regulation, why do industrial robots also need a deceleration motor?
Industrial robots usually perform repeated actions to complete the same process; In order to ensure that the industrial robot can reliably complete the process tasks and ensure the quality of the process, the positioning accuracy and repeated positioning accuracy of the industrial robot are highly required. Therefore, to improve and ensure the accuracy of industrial robots need to use an RV series reducer or harmonic reducer. Another role of precision reducer motors in industrial robots is to deliver greater torque. When the load is large, it is not cost-effective to simply increase the power of the servo motor, and the output torque can be increased through the reducer in the appropriate speed range.
In addition, the servo motor is prone to heat and low-frequency vibration under low-frequency operation, which is not conducive to ensuring the accurate and reliable operation of industrial robots that work for a long time and periodically. The existence of a precision deceleration motor makes the servo motor run at an appropriate speed, and accurately reduces the speed to the required speed of various parts of the industrial robot, improving the rigidity of the mechanical body while the output of greater torque. Compared with the general reducer, the robot joint reducer is required to have the characteristics of a short transmission chain, small volume, large power, lightweight, and easy control. There are two main types of reducers that are widely used in joint robots: RV reducer and harmonic reducer.
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