Do you know under what conditions the cycloid reducer should be used?
The cycloidal gear reducer is a novel transmission device that applies the principle of planetary transmission and uses cycloidal gear meshing.
The entire transmission device of the cycloidal pinwheel reducer can be divided into three parts: input part, deceleration part, and output part. On the input shaft, there is a double eccentric sleeve with a misalignment of 180 °. On the eccentric sleeve, there are two roller bearings called rotating arms, forming the H mechanism. The center holes of the two cycloidal gears are the raceways of the rotating arm bearings on the eccentric sleeve, and the cycloidal gears mesh with a group of circular arranged needle teeth on the needle gear to form an internal meshing reduction mechanism with a tooth difference of one tooth, In order to reduce friction, in reducers with low speed ratios, needle teeth are equipped with needle teeth sleeves.
When the input shaft rotates with an eccentric sleeve for one cycle, due to the characteristics of the tooth profile curve on the cycloidal gear and its limitation by the needle teeth on the needle gear, the motion of the cycloidal gear becomes a plane motion with both revolution and rotation. When the input shaft rotates in the forward direction, the eccentric sleeve also rotates for one cycle, and the cycloidal gear rotates in the opposite direction by one tooth to achieve deceleration. Then, with the help of the W output mechanism, the low-speed rotation motion of the cycloidal gear is transmitted to the output shaft through the pin shaft, This results in a lower output speed.
Characteristics of cycloidal gear reducer:
High speed ratio and high efficiency single stage transmission can achieve a reduction ratio of 1:87, with an efficiency of over 90%. If multi-stage transmission is used, the reduction ratio is even greater.
The first stage transmission has a reduction ratio of 9-87, and the second stage transmission has a reduction ratio of 121-5133. The multi-stage combination can reach tens of thousands, and the needle gear meshing system has sleeve rolling friction, with no relative sliding on the meshing surface. Therefore, the first stage reduction efficiency reaches 94%.
Due to the use of planetary transmission principle, the input and output shafts are on the same axis line, resulting in a compact structure and small size for its model.
Smooth operation, low noise, large number of meshing teeth of cycloidal needle teeth, large overlap coefficient, and mechanism of machine component balance, which limits vibration and noise to the minimum extent. During operation, there are many pairs of teeth that come into contact at the same time, with a high degree of overlap, stable operation, strong overload capacity, low vibration and noise, and various specifications of models have low noise.
Reliable use and long service life. The main components are made of high carbon chromium steel material, which has been quenched (HRC58-62) to obtain high strength. Additionally, some transmission contacts use rolling friction, making them durable and have a long service life.
Due to the fact that the main components are quenched with high carbon alloy steel (HRC58-62) and then finely ground, and the cycloid teeth mesh with the needle gear sleeve to form a rolling friction pair, the friction coefficient is small, so there is no relative sliding in the meshing area and minimal wear, making it durable.
Reasonable design, convenient maintenance, easy disassembly and installation, minimum number of parts, and simple lubrication make the cycloidal pinwheel reducer highly trusted by users.
Compared with other reducers of the same power, the weight and volume are more than one-third smaller. Due to the planetary transmission, the input and output shafts are on the same axis to achieve the smallest possible size.
1、 Purpose
The cycloidal gear reducer adopts the principle of cycloidal gear meshing and planetary transmission, so it is usually also called a planetary cycloidal gear reducer
