The Role of Harmonic Reducer in Industrial Robot
|1.6.2021||Posted by laifualgroup under Advertising & Marketing|
- Why do industrial robots need high-precision harmonic reducers?
The power source of industrial robots is generally AC servo motor, because it is driven by pulse signal, its servo motor itself can realize speed regulation. Industrial robots usually perform repetitive actions to complete the same process; in order to ensure that industrial robots can reliably complete process tasks in production and ensure process quality, the positioning accuracy and repeated positioning accuracy of industrial robots are very high.
Therefore, to improve and ensure the accuracy of industrial robots, it is necessary to use harmonic reducers or RV reducers. Another role of the harmonic reducer in industrial robots is to transmit greater torque. When the load is large, it is not cost-effective to blindly increase the power of the servo motor, and the output torque can be increased by a reducer within a suitable 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 accurate and reliable operation of industrial robots that work for a long time and periodically.
- What is the role of the harmonic reducer?
The existence of the harmonic reducer enables the servo motor to run at a suitable speed, and accurately reduces the speed to the speed required by each part of the industrial robot, improving the rigidity of the mechanical body and outputting a greater torque. Compared with general-purpose reducers, robot joint reducers are required to have the characteristics of short transmission chain, small size, high power, light weight and easy control. There are two main types of reducers widely used in articulated robots: harmonic reducers and RV reducers. Compared with harmonic reducer, RV reducer has higher rigidity and rotation accuracy. Therefore, in articulated robots, the RV reducer is generally placed on heavy loads such as the arm and shoulder of the base; the harmonic reducer is placed on the forearm, wrist or hand; the planetary reducer is generally used in Cartesian coordinate robot.
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