XPrinciple of planetary cycloid reducer
When the input shaft rotates one circle with the eccentric sleeve, due to the characteristics of the upper tooth profile curve of the cycloidal wheel and the limitation of the needle gear on the needle gear, the motion of the cycloidal wheel becomes a plane motion with both revolution and rotation. When the input shaft rotates forward, the eccentric sleeve also rotates once, and the cycloid rotates one tooth in the opposite direction to obtain deceleration. Then, with the help of the W output mechanism, the low-speed rotation motion of the cycloid is transmitted to the output shaft through the pin shaft. In order to obtain a lower output speed.
A double eccentric sleeve with a displacement of 180° is installed on the input shaft, and two roller bearings called swing arms are installed on the eccentric sleeve to form the H mechanism. The center holes of the two cycloids are the upper swing arm bearings of the eccentric sleeve. The raceway of the cycloidal gear meshes with a set of circularly arranged needle teeth on the needle gear to form an internal meshing with a tooth difference of one toothReducer(In order to reduce friction, in a reducer with a small speed ratio, the needle gear is equipped with a needle gear sleeve).