Function, classification and application field of precision planetary reducer

The development history of precision planetary reducer in China has been more than 40 years, and it is a mechanical transmission device in many fields of national economy.

Function of precision planetary reducer

Precision reducer is used to reduce speed and increase torque to meet working requirements. It is also used for speed increase in some occasions, and is called speed increase device.

Classification of precision planetary reducer

1) By transmission type

Gear reducers, worm reducers, planetary gear reducers and reducers combined with their materials.

2) According to the profile of gears

Cylindrical gear reducer, bevel gear reducer and their combined bevel cylindrical gear reducer.

3) It can be divided into single-stage and multi-stage reducers according to the transmission stages.

Application field of precision planetary reducer

Food and light industry, electric machinery, construction machinery, metallurgical machinery, cement machinery, environmental protection machinery, electronic appliances, road building machinery, water conservancy machinery, chemical machinery, mining machinery, transport machinery, building materials machinery, rubber machinery, petroleum machinery and other industries have strong demand for reducer products.

Deceleration characteristics of precision planetary reducer

1. High torque and impact resistance

Traditional gears are driven by squeezing only a few contact surfaces between two gears, and all loads are concentrated on a few contact gear surfaces. In this way, friction and fracture between gears are easy to occur. However, the planetary reducer has six larger areas with 360 ° uniform load on the gear contact surface. Multiple gear surfaces of the planetary reducer uniformly bear the instantaneous impact load, making the planetary reducer more able to withstand the impact of higher torque force. The body and bearing parts will not be damaged or broken due to high load.

2. Small volume and light gravity

The small size, light weight and light appearance of the planetary reducer make the design more valuable. The traditional gear reducer is driven and decelerated by multiple groups of large and small gears in a staggered way. The reduction ratio is generated by the multiple of the number of two gears, and there should be a certain distance between the large and small gears. Therefore, the gear box has a large capacity, especially when the high-speed ratio is combined, more than two reduction gear boxes need to be connected and combined. The structural strength is relatively weak, which makes the length of the gear box longer, resulting in huge volume and weight. The structure of the planetary reducer can be repeatedly connected according to the number of required segments, and the multi segment combination can be completed separately.

3. High efficiency and low back clearance

Because each group of gears of the gear reducer has only single tooth surface meshing contact when decelerating, when the transmission torque is equal, greater tooth surface stress is required. Therefore, greater module and thickness must be used in gear design. The larger the gear module is, the greater the deflection tolerance between gears will be. Relative to the formation of higher gear clearance, the cumulative backlash between reduction ratios of each section will also increase. The unique multi-point uniform fit in the planetary reducer combination, the circular arc envelope structure of the outer gear ring, makes the outer gear ring and the planetary gear closely combined, and the gear tightness is high. In addition to the extremely high efficiency of the reducer, the design itself can achieve high-precision positioning.

The huge market of precision planetary reducer has given rise to fierce competition in the industry, so manufacturers of precision planetary reducer must vigorously develop energy-efficient products to adapt to the reducer industry. Manufacturers of precision planetary gear reducer should make full use of the opportunity of national energy-saving product benefiting people project policy, increase product upgrading efforts, and adjust product structure to cope with the complex and changing economic environment and maintain a good momentum of development.