Planetary reducer gear principle and transmission characteristics of sharing

The main transmission structure of the planetary reducer gear is the planetary gear sun gear and the outer ring gear. In fact, the planetary reducer gear is the principle of gear reduction. It has a central gear or sun gear with a fixed axis position, and a gear with a variable axis on the edge of the sun gear, that is, a gear planetary gear that rotates and revolves, and the planetary gear has a support member.

The planet carrier transmits power to the shaft, and then through the planet carrier to other gears. They consist of a set of several gears, and a gear train has only one prime mover. This epicyclic gear train is called a planetary gear train planetary reducer. Due to structural reasons, the single-stage deceleration is as small as 3, but generally does not exceed 10. Common reduction ratio: 3.4.5.6.8.10 generally not more than 3. But some large reduction ratio, compared with the customized reducer, there are four levels of deceleration.

Features of 1. planetary reducer gear:

(1) Small size, light weight, small size, compact structure, large transmission power and high carrying capacity;

(2) The transmission ratio is large, which can reach several thousand, but the transmission efficiency will become lower;

(3) high transmission efficiency;

(4) Stable transmission, strong impact resistance and vibration resistance;

(5) smooth operation and low noise, generally below 65 decibels; suitable for screen printing equipment, cutting and welding equipment, packaging, printing, industrial robots, semiconductors, lithium batteries, medical, testing machines and various non-standard equipment and other precision automation machines.

Because of this, planetary reducer gear technology has been rapidly developed and widely used in China. At present, its products are rich in variety, and its bearing capacity and other properties have basically reached the level of similar products.

2. how to choose planetary reducer gear:

1) First of all, the motor should be selected to match the motor mounting flange, and the motor should be classified according to the mounting flange. For example, the servo motor is divided into 40, 60 and other series. Stepper motor is divided into 42, 57 and so on. Planetary reducer is also determined according to the mounting flange, so 400W60 series servo motor or 57 stepper motor are generally equipped with 60 planetary reducer gear; 750W80 servo motor or 86 stepper motor are generally equipped with 80 planetary reducer gear.

2) Determine the reduction ratio: The specific reduction ratio is determined by the equipment manufacturer according to its own equipment requirements. At present, it is generally divided into three levels, and some manufacturers have only two levels, and the first level reduction ratio is generally below 20.

3) Reducer shape: There are circular reducers and square reducers. Because the rated output torque of the square reducer is larger than that of the circular reducer, and the manufacturing process is more complicated than that of the circular reducer, the square reducer is more expensive than the circular reducer.

Note that if you still don't know how to select the model, you can directly tell the sales engineer the motor model, the required reduction ratio, the input and output form, whether it is round or square? Do you have any requirements for the output end? If there is no special requirement, it is generally done according to the manufacturer's standard.