The role of precision reducers in industrial robots
Release time：2019-11-18
Publisher: Admin
The power source of industrial robots is generally AC servo motors, because they are driven by pulse signals, and the servo motors themselves can achieve speed regulation. Why do industrial robots still need reducers? Industrial robots typically perform repetitive actions to complete the same process; To ensure that industrial robots can reliably complete process tasks in production and ensure process quality, high requirements are placed on the positioning accuracy and repeatability accuracy of industrial robots. Therefore, improving and ensuring the accuracy of industrial robots requires the use of RV reducers or harmonic reducers. Another function of precision reducers in industrial robots is to transmit greater torque. When the load is large, it is not cost-effective to simply increase the power of the servo motor. The output torque can be increased through a reducer within a suitable speed range. In addition, servo motors are prone to overheating and low-frequency vibration during low-frequency operation, which is not conducive to ensuring the accurate and reliable operation of industrial robots that work for long periods of time and cycles.
The existence of precision reducers enables servo motors to operate at a suitable speed and accurately reduce the speed to the required speed of various parts of industrial robots, improving the rigidity of the mechanical body while outputting greater torque. Compared with general reducers, robot joint reducers require characteristics such as short transmission chain, small size, high power, light weight, and easy control. There are two main types of reducers widely used in articulated robots: RV reducers and harmonic reducers.
Compared to harmonic reducers, RV reducers have higher stiffness and rotational accuracy. Therefore, in articulated robots, RV reducers are generally placed in positions with heavy loads such as the base, boom, and shoulders; And place the harmonic reducer on the forearm, wrist, or hand; Planetary reducers are generally used on Cartesian robots.
Shangying Transmission Technology (Shanghai) Co., Ltd. is based in the global industrial automation field, gathering industry * * teams for independent research and development, production, and sales of high-precision planetary gearboxes. The company is also committed to the research and development of specialized reducers for industrial robots. Business needs are welcome to contact us.
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