What are the applications of planetary gearboxes?
1: High precision for heavy loads: This is necessary when the load must be moved and precise positioning is required. Generally, automation equipment such as aviation, satellite, medical, military technology, wafer equipment, robots, etc. Their common feature is that the torque required to move the load often far exceeds the torque capacity of the servo motor itself. By using planetary gearboxes to increase the output torque of servo motors, this problem can be effectively solved.
2: Boosting torque: The way to increase output torque may be to directly increase the output torque of the servo motor, but this method not only requires the use of expensive high-power servo motors, but also requires stronger motor structures. The increase in torque is proportional to the increase in control current. In this case, using larger drivers, increasing the specifications of power electronic components and related electromechanical equipment will significantly increase the cost of the control system. At this point, choosing a planetary gearbox can not only meet the corresponding requirements, but also reduce costs.
3: Increasing usage efficiency: In theory, increasing the power of servo motors is also a way to increase output torque. By increasing the speed of servo motors by twice, the power density of the servo system can be doubled without increasing the specifications of control system components such as drivers, which means there is no need to increase additional costs. And this requires the combination of planetary reducers to achieve the goal of increasing torque. So, the development of high-power servo motors requires the use of reducers, rather than omitting them altogether.
4: Improving performance: It is understood that improper matching of load inertia is one of the biggest reasons for unstable servo control. For large load inertia, the inverse square of the reduction ratio can be used to adjust the optimal equivalent load inertia to obtain the best control response. So from this perspective, planetary gearboxes are the best match for control response in servo applications.
5: Increasing the service life of equipment: Planetary reducers can also effectively solve the attenuation of low-speed control characteristics of motors. Due to the decrease in speed, the controllability of servo motors may experience some degree of attenuation, especially in terms of signal acquisition and current control stability at low speeds, which is particularly evident. Therefore, using a planetary gearbox can enable the motor to have a higher rotational speed.