TRH090 Series High Precision Planetary Gearbox Right Angle Reducer, also known as servo motor planetary gearbox and low backlash planetary gearbox, is a type of gearbox that is used to transmit torque from a motor to a driven load. It is designed to provide high precision and low backlash in applications where accurate positioning and motion control are critical.
The sun gear is located in the center of the planetary gearbox and is usually connected to the input shaft or fixed on the housing as a stationary component.
The planet gears rotate around the sun gear and are supported and held in relative position to each other by the planet carrier. Each planet gear meshes with both the sun gear and the ring gear/annulus, and they collectively share and distribute the load when power is inputted.
The planet carrier is a structure with multiple planet gear shaft holes that carries the planet gears and allows them to rotate relative to the sun gear. The planet carrier can act as an output element or be connected to another shaft to transmit or receive torque.
The ring gear/annulus is a large diameter circular gear fixed inside the housing, with teeth on both inside and outside surfaces that mesh with the planet gears. In some applications, the ring gear can also act as an input or output end.
The bearings in the high precision planetary gearbox are used to support the input shaft, output shaft, and planet carrier, ensuring stable rotation and smooth operation of all components.
The housing is the external frame of the gearbox that protects the internal components from external environmental influences and provides installation interfaces. The seals ensure that the internal grease does not leak and prevent dust and water from entering the gearbox.
When power is inputted to the sun gear, it drives the planet gears to rotate around it. Because the planet gears mesh with both the sun gear and the ring gear, they also revolve around the center of the sun gear with the planet carrier. In this way, the torque inputted to the sun gear is amplified through the planet gears and evenly distributed to the planet carrier at the output end.
By adjusting the gear ratio of different components, speed conversion and torque amplification can be achieved between input and output ends. Generally, the greater the number of planet gears or the gear ratio, the more significant the torque amplification effect, but the output speed will also decrease.
In high-precision applications, to ensure accurate position control and minimal mechanical clearance, high-precision planetary gearboxes use preload technology to reduce or eliminate gear clearance, known as "zero/low backlash" design.
One important advantage of the planetary gear mechanism is that it can evenly distribute the load among multiple planet gears, thereby improving the load-bearing capacity and stability of the entire system and optimizing the dynamic response performance.
| Consideration | Description |
|---|---|
| Torque requirements | The required torque of the driven load determines the size and strength of the gearbox. |
| Input speed and output speed | The input and output speeds determine the gear ratio of the gearbox and the corresponding number of planet gears. |
| Accuracy requirements | The required accuracy of the positioning and motion control determines the level of backlash and preload that the gearbox needs. |
| Operating environment | The operating environment, such as temperature, humidity, and vibration, affects the lubrication requirements and sealing performance of the gearbox. |
Used with servo motors for precise speed control and position location in industrial automation equipment, such as robot joint drives, precision machine tool feed mechanisms, and semiconductor manufacturing equipment.
Used in high-end medical equipment such as CT scanners, MRI machines, surgical robots, etc. for precise motion control and torque amplification.
Used for landing gear extension and retraction systems, flight control system actuators, satellite attitude adjustment devices, etc. that require high reliability and precision.
Used in scientific experimental equipment, precision measuring instruments, optical tracking systems, and other scenes that have extremely high requirements for transmission accuracy.
Used in power steering systems of new energy vehicles, drive units of electric vehicles, transmission systems of high-performance racing cars, etc.
Used in joint drive parts of industrial robots, service robots, and special operation robots.
Used in lifters, conveyor drive units, AGVs, etc. for automatic warehousing systems.
We are a professional manufacturer of transmission equipment located in Ningbo, Zhejiang. We strictly operate according to the international quality management system standard ISO9001:2015, and our products have passed China's mandatory CCC certification and European CE certification. Our products are produced according to international IC standards and have reached the advanced level of similar products internationally.
Author: Miya
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