The structure of the cycloidal pinwheel planetary reducer

The typical structure of the cycloidal pinwheel planetary reducer is mainly composed of four parts:

(1) The planet carrier is composed of an input shaft and a double eccentric sleeve, and the two eccentric directions on the eccentric sleeve are 180 degrees from each other.

(2) The planetary gear is also called the cycloidal gear, and its tooth shape is usually the inner equidistant curve of the short epicycloid.According to the motion requirements, one planetary gear can be used for transmission, but in order to achieve static balance of the input shaft and improve the bearing capacity, two identical planetary gears with odd teeth (two-tooth differential needle pendulum) are often used for one-tooth difference needle pendulum transmission. The transmission is not limited by this), which is installed on the double eccentric sleeve, and the position of the two wheels is exactly 180 degrees apart.A roller bearing (called a swivel bearing) is installed between the planetary wheel (cycloid wheel) and the eccentric sleeve to reduce friction. In order to save radial space, rolling bearings usually use roller bearings without outer races. The inner hole surface of the cycloid reducer directly serves as the raceway.In recent years, the optimally designed structure often integrates the double eccentric sleeve and the bearing into a whole, which is called an integral double eccentric bearing.

(3) The center wheel is also called the cycloidal pin wheel. A set of pin-tooth pins are installed on the pin-tooth shell, and usually a pin-tooth sleeve is also installed on the pin-tooth pins.

(4) Output mechanism This type of output mechanism is often used.