The mechanism of the movement of the cycloid reducer

Among the mechanisms currently used to transmit power and motion, the application range of the reducer is quite extensive, and its traces can be seen in almost all kinds of mechanical transmission systems, from ships, automobiles, locomotives, construction vehicles, etc. Heavy machinery, processing machinery and automated production equipment used in the machinery industry, to household appliances, clocks and watches that are common in daily life.The application of cycloidal pinwheel reducer can be seen from the transmission of large power to small load and precise angle transmission. In industrial applications, the reducer has the function of decelerating and increasing torque, so it is widely used. Used in deceleration and torque conversion equipment.

Cycloidal pinwheel deceleration and all transmission devices can be divided into three parts: input part, deceleration part, and output part.A double eccentric sleeve with a dislocation of 180° is installed on the input shaft, and two roller bearings called swing arms are installed on the eccentric sleeve to form an H mechanism. The roller table is meshed with a group of circularly arranged needle teeth on the real gear by the cycloidal wheel to form an internal meshing deceleration mechanism with a tooth difference of one tooth. In order to reduce friction, in the reducer with a small speed ratio, the needle There are pin-tooth sleeves on the teeth.

When the input shaft rotates once with the eccentric sleeve, due to the characteristics of the upper profile curve of the cycloid wheel and its limitation by the pin gear, the motion of the cycloid wheel becomes a plane motion with both revolution and autobiography. The eccentric sleeve also rotates for one cycle, the cycloid wheel rotates one tooth in the opposite direction to obtain deceleration, and then with the help of the W output mechanism, the low-speed autorotation motion of the cycloid wheel is transmitted to the output shaft through the pin shaft, so as to obtain a lower speed. output speed.