Components of planetary gear reducer, planetary gear reducer manufacturers

The components of the planetary reducer are mainly divided into four parts. The shell containing the internal teeth is called the internal ring gear. Most of the time, the housing is fixed.

The actuated sun pinion is located in the center of the inner ring gear and is coaxial to the output shaft. Typically, the sun pinion is connected to a tensioning system so that it is mechanically attached to the motor shaft. During operation, the planetary gears located on the planetary carrier roll between the sun pinion and the inner ring gear.

The planetary carrier also forms the output shaft of the reducer. The only function of planetary gears is to transmit the necessary torque. The number of teeth will not affect the transmission ratio of the reducer.

Therefore, the number of planetary gears can be changed. Increasing the number of planetary gears expands the load distribution surface, resulting in higher transmittable torque. Increasing the number of tooth engagements can also reduce the rolling power.

Because only a portion of the total power needs to be transferred as rolling power, the planetary gearboxes are extremely efficient. In terms of load distribution, planetary reducers have certain advantages over cylindrical gear reducers. As a result, planetary gear units with their compact design can efficiently transmit high torques.

If the size of the inner ring gear is constant, different gear ratios can be achieved by changing the number of teeth of the sun gear and planetary gears. The smaller the sun gear, the greater the gear ratio. A planetary level can achieve about 3:

Ratios ranging from 1 to 10:1, below or above which planetary or sun gears can be extremely small. By switching multiple planetary gears sequentially in the same inner ring gear, the gear ratio can be increased.

This is called a multi-stage gearbox. For example, the inner ring gear is not fixed, but is driven in any direction of rotation, which can cover the speed and torque of the planetary gear reducer. It is also possible to fix the output shaft so that the torque can be determined by means of the inner ring gear.

Bachmann planetary gear units are extremely important in all areas of mechanical engineering.

The drive source actuates the sun gears either directly or connected, and the sun gears drive the planetary gears combined on the planetary carriers. The whole set of planetary gear system automatically rotates along the outer gear ring, and the planetary carrier is connected to the output shaft output to achieve the purpose of deceleration. Start with the sun gear.

The main transmission structure components of the planetary gear reducer are: planetary gear, sun gear, internal gear ring, planetary carrier, transmission shaft, output shaft, drive motor (motor), washer, bearing, box, etc. You can refer to the following figure:

Jiangyin Guokang Transmission Machinery ****It is an enterprise specializing in the design, processing and manufacturing of R&D, planetary reducer, right-angle planetary reducer, planetary gear reducer, gear reducer, servo reducer, servo reducer, planetary reducer, hard tooth surface reducer, helical gear reducer, Tongzhen SEW reducer, gear reducer, gearbox, worm gear reducer, cycloidal reducer, helical gear reducer and geared motor. Products are widely used in cement equipment, coal equipment, iron and steel metallurgy, mining machinery, ships, papermaking machinery, rubber and plastics, petrochemical, lifting and transportation, beer and beverage, food packaging, pharmaceutical tanning, textile printing and dyeing, environmental protection equipment and other light and heavy industries. The company adheres to the brand development strategy, through continuous and high starting point of technological transformation, the introduction of high-precision equipment talents, the establishment of a sound quality management system and marketing service network, dedicated to providing users with high-quality products and satisfactory services.

In the new development period, the company will implement the scientific concept of development, adhere to the enterprise spirit of "integrity, innovation, unity and progress", seize the opportunity, accelerate development, and strive to become a transmission equipment enterprise. The company will, as always, work with domestic and foreign partners for win-win development and create brilliance together.

1 All simply: planetary reducer and cycloid reducer ratio, planetary reducer is small in size, high efficiency can reach 97%, light weight, low return clearance, generally with servo motor and stepper motor, ** much more expensive than cycloidal pinwheel; The cycloidal pinwheel reducer single-stage reduction ratio can be done from 6-81, and the torque is not much stronger than the same number of planets, but its return clearance is large, the use needs to be maintained and oiled, the efficiency is not as high as the planet, the noise is larger than the planet, and the heat is generally matched with ordinary motors, and there are a few with high-power servo motors, and the cycloidal pinwheel reducer is much cheaper than the planetary reducer. If you want to use the planetary reducer more stably, you still have to import it, for example, the Taiwan Pinhong planetary reducer is very good, and it is reasonable; The cycloidal pin wheel can generally meet the requirements with domestic ones, and a few imported ones.

Shanghai Lianheng Precision Machinery Co., Ltd. is a large-scale high-tech enterprise specializing in R&D, manufacturing and sales of precision transmission equipment in China. At present, the company's main products are: precision planetary reducer, precision servo reducer, precision worm gear reducer, precision screw lift, precision gear reducer and other five series of products.

Products are widely used in: CNC machine tools, glass equipment, precision instruments, measuring equipment, food packaging, welding equipment, printing machinery, textile printing and dyeing, pharmaceutical tanning, environmental protection equipment, cement equipment, coal equipment, beer and beverages, mining machinery, rubber and plastics, petrochemical, lifting and transportation, pharmaceutical tanning, environmental protection equipment and other light and heavy industry mechanical transmission and precision control fields. As a high-tech enterprise of precision transmission equipment in China, the company has introduced the latest manufacturing technology, equipment and inspection methods from Germany, which effectively ensures the quality of products, production efficiency and the stability of equipment.

Lianheng Precision is committed to the R&D and production of global precision transmission equipment products, providing the best solutions for transmission applications in the machinery industry at home and abroad. At present, the company has two professional production bases in Zhejiang and Shanghai and Shanghai R&D center, with more than 10,000 models of products and sold to more than 20 countries and regions around the world.

The company adheres to the corporate culture of "honesty, responsibility, innovation, love, harmony and progress". In line with the business principle of "customer first, the pursuit of quality", as always, we strive to build a respected high-tech manufacturing enterprise in the field of industrial transmission.

Generally, carburized alloy steel is used.

The steel grades are: 20cr 20crmnmo 25mntib 20mnvb 20crmnti

1. Planetary reducer.

It consists of a solar wheel system plus a group of living planetary wheels.

One set is composed of three, which can maintain a fairly high accuracy in the process of telling the operation, and the volume of the planetary reducer is very small relative to its output torque.

A single section can do 1 10, through the modular design, the speed ratio can reach 1000, or even more than 1000.

However, because of its material accuracy and meticulous processing methods, the cost of planetary reducer is much higher than that of gear reducer.

2. Gear reducer, a single section can be done 1 200, and a higher speed ratio of 1 2000 can be achieved through modular installation, this kind of reducer runs smoothly, the noise is very small, and the market price is low, and it is mostly used for various low-load assembly line installations.

Compared with the planet, the gear reducer cannot improve the accuracy at all, and the torque is even less likely to reach the height of the planet.

Planetary Reducer Overview:

Planetary reducer is a widely used deceleration equipment, the accuracy of the planetary reducer is very high, under the premise of ensuring precision transmission, the planetary reducer is mainly used to reduce the speed, increase the torque and reduce the load The moment of inertia ratio of the motor. Planetary reducer is also called servo reducer or servo planetary reducer.

The planetary reducer adopts involute planetary gear transmission, which makes reasonable use of internal and external meshing and power shunt, and the box body is made of ductile iron, which greatly improves the rigidity and seismic resistance of the box; The gears are carburized and quenched to obtain a high hard and wear-resistant surface, and all the gears are ground after heat treatment, which reduces the noise and improves the efficiency and service life of the whole machine; There are 2 and 3 planetary transmission stages of planetary reducer, which are the most commonly used stages.

The main transmission structure of the planetary reducer is:Planetary gears, sun gears, internal ring gears, drive motors, drive shafts.

The planetary reducer can be divided into three sections from the appearance:Input, deceleration, and output segments.

Input Segment:The input segment refers to the end that is connected to the motor. Including input shaft hole, input flange.

Deceleration Section:The reduction section refers to the core section of the reducer, which looks like a box from the outside, but actually contains many core components, such as planetary gears, sun gears, and internal gear rings.

Output Segment:The output Xi refers to the end connected to the device, including the output shaft and output flange.

Internal structure diagram of planetary reducer:

The structural principle of the planetary reducer.

1. Component parts.

Body, output shaft, output shaft oil seal, output bearing, sun nut, planetary carrier, internal tooth ring, planetary gear, stage gear, needle roller shaft, sun gear, C-type buckle ring, input bearing, input shaft oil seal, input flange, O-ring, breathable plug, key, washer, hexagon socket screw, etc.

Second, the principle of transmission.

The transmission structure of the planetary reducer is the most efficient combination of the gear reducer at present, and its basic transmission structure is four parts

1. Sun gear 2, planetary gear (combined with planetary carrier) 3, internal gear ring 4, stage gear.

The drive source actuates the sun gears in a direct connection, and the sun gears are driven by the planetary gears that are combined on the planetary carriers. The whole set of planetary gear system automatically runs and rotates along the outer gear ring, and the planetary carrier is connected to the output shaft output to achieve the purpose of acceleration. Higher reduction ratios need to be formed by the multiplication of multiple sets of stage gears and planetary gears.

3. Deceleration characteristics.

1. High torsion, impact resistance: the mechanism of planetary gears is similar to the transmission mode of traditional parallel gears. The traditional gear is driven by the extrusion of a very few contact surfaces between the two gears, and all the loads are concentrated on a few gear surfaces in contact, which is easy to cause friction and fracture between the gears.

The planetary gear reducer has six larger areas and 360 degrees of uniform load on the contact surface with the gear, and multiple gear surfaces jointly bear the instantaneous impact load, so that it can better withstand the impact of higher torque force, and the body and each bearing part will not be damaged and cracked due to high load.

2. Small size, light gravity: the design of the traditional gear reducer has multiple groups of large and small gears biased to staggered transmission deceleration, because the reduction ratio must be generated by the multiple of the number of two gears, and there must be a certain distance between the large and small gears, so the gearbox accommodates a large space, especially when the combination of high-speed ratio, it is necessary to be connected and combined by more than two reduction gearboxes, and the structural strength is relatively weakened, and the length of the gearbox is lengthened, resulting in a 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.

The internal structure of the planetary reducer is shown in the following figure:

Planetary gear reducer (Bapman) is widely used, and this kind of equipment has the characteristics of small size and light weight, so what are the functions of such equipment? Let's take a look.

1. Increase the torque, the planetary reducer can amplify the torque of the motor, so that we can choose a low-power motor to achieve the output of large torque.

2. Variable speed function, the planetary reducer can convert the high speed of the motor to the low speed required by the equipment, and the reduction ratio is an accurate positive integer. The result is a precise shifting function.

3. Precise positioning, after the planetary reducer is also combined with the motor, the precise positioning, quantitative feeding, measurement angle and other functions of the equipment can be realized through the pulse control function.

Planetary gear reducer is also known as planetary reducer, gear reducer. In the reducer family, planetary gear reducers are widely used in automotive drives, communication antenna ESC systems, precision medical equipment, smart homes and other fields due to their small size, high transmission efficiency, wide deceleration range, high precision, long life and many other advantages. The main structure of the planetary gear reducer is composed of planetary gear, sun gear, internal gear ring, transmission shaft and drive motor; Because of the structure of the planetary gear reducer, the single-stage reduction is 3, generally not more than 10, and the common reduction ratio is:

3 4 5 6 8 10, the number of reducer stages is generally not more than 3, but some large reduction ratio custom reducers have 4 levels of deceleration. Compared with other reducers, planetary gear reducers have the characteristics of high rigidity, high precision (single-stage can be achieved within 1 minute), high transmission efficiency (single-stage is 97%-98%), high torque-to-volume ratio, and lifelong maintenance-free. Progression:

Number of sets of planetary gears. Since one set of planetary gears cannot meet the larger transmission ratio, sometimes 2 or 3 sets are required to meet the requirements of supporting a larger transmission ratio. Due to the increase in the number of planetary gears, the length of the 2nd or 3rd stage reducer will increase and the efficiency will decrease.

Return clearance: When the output end is fixed, and the input end rotates clockwise and counterclockwise, so that the input end produces the rated torque +-2% torque, there is a small angular displacement at the input end of the reducer, and this angular displacement is the return clearance. Units are:"points", which is one-sixtieth of one degree.

Some people also call it backlash. Uses: automotive drives, communication antenna equipment, medical equipment, electronic products, household appliances, smart home equipment, smart kitchen and bathroom equipment, smart wearable equipment, massage and health care equipment, security equipment, optical equipment, photography equipment, home audio and video equipment, intelligent office equipment, robot equipment, industrial automation equipment, etc.;