The working principle of precision planetary reducers is based on planetary gear transmission. It is mainly composed of a sun gear, planet gears, inner ring gear, and planet carrier.
Usually, the sun gear serves as an input component and is driven to rotate by an external power source. The planetary gear revolves around the sun gear while also rotating on its own, and meshes with the inner ring gear. The internal gear ring is fixed and stationary, while the planetary gears output power through the planetary carrier. When the sun gear rotates, it drives the planetary gears to rotate. Due to the fixed internal gear ring, the revolution and rotation of the planetary gear cause power to be output through the planetary carrier. Multiple planetary gears are evenly distributed around the sun gear, sharing the load together, thereby achieving high torque transmission and high reduction ratio output. The advantage of this structure is that it can achieve a larger transmission ratio in a smaller space, while also having high transmission efficiency and load-bearing capacity.
For example, in the joint drive of industrial robots, precision planetary reducers can convert the high-speed low torque input of the motor into low-speed high torque output, meeting the precise control of robot movements and high load requirements.
