How to adjust the accuracy of the planetary reducer?

The adjustment method of the accuracy of the planetary reducer.

1. Adjust the clearance method: the servo planetary reducer will produce friction in the process of movement, which will cause changes in the size, shape and surface quality between the parts, and produce wear, so that the gap between the parts will increase, at this time, we need to adjust it within a reasonable range to ensure the accuracy of the relative movement between the parts.

2. Error compensation method: the error of the part itself is offset by the appropriate assembly to cancel each other during the running-in period to ensure the accuracy of the equipment movement trajectory.

3. The comprehensive compensation method uses the tools installed by the reducer itself to make the processing of the working surface that has been transferred and adjusted correctly, so as to eliminate the comprehensive results of various accuracy errors.

4. Adjustment of the rotation accuracy of the spindle of the planetary reducer.

The rotation accuracy of the spindle of the reducer, under the premise that the machining error of the spindle itself meets the requirements, is generally determined by the bearing to a large extent. The key to adjusting the rotation accuracy of the spindle is to adjust the clearance of the bearing. Maintaining a reasonable amount of bearing clearance is of great significance to the working performance and bearing life of the spindle components.

There are different algorithms depending on the output mechanism.

Taking the common mechanism, the inner ring gear is fixed, and the force is in the center of the sun tooth, and the output of the planetary gear bracket is (the number of internal ring teeth and the number of sun teeth) +1, taking the common reducer of general servo motor as the reduction ratio of 1 10 as an example.

The number of teeth in the inner ring gear is usually 108 teeth, so the number of sun teeth is 108 (10-1) = 12 (teeth).

It can be known that the reduction ratio is 1 5, and the sun gear is 108 (5-1) = 27 (teeth), and we can know why this kind of mechanism, the reduction ratio of 1 10 does not get the best output torque, and this is the reason.

Common ways to calculate the speed ratio of planetary reducers:

1. Define the calculation method: reduction ratio = input speed output speed. (For example, if the input speed is 1450 and the output speed is 50, the resulting speed is 29.) The larger the speed ratio, the greater the output torque and the slower the output speed).

2. General calculation method: reduction ratio = use torque 9550 motor power motor power input speed use coefficient. (The rated power of the motor is p (kw), the speed is n1 (r min), the total transmission ratio of the reducer is i, and the transmission efficiency is u).

Dear, hello, planetary reducer and ball reducer are both in the reducer submachine machinery"Boutique"Oh. First of all, the design of the planetary reducer is composed of the sun gear stationary on the central axis and a plurality of planetary wheels rotating around the sun gear, which has the advantages of high precision, high efficiency and high torque, and is widely used in industrial machinery, machine tools, automatic Qibihua production line and other fields. However, the design of the spherical speed reduction speed machine adopts the cycloid support outside the ball, and the power transmission is realized through the contact between the ball and the cycloid, which has a lower cycloidal factor and higher torque density, and is suitable for high-precision, high-torque, and small-spacing deceleration transmission.

In summary, if you need high-precision and high-torque transmission, the ball reducer is a better choice; If you need high efficiency, miniaturization and low noise, planetary reducers may be more suitable. I hope it will be helpful for you to compile your answers.

Pro, between the planetary reducer and the ball reducer, the accuracy of the planetary reducer will generally be higher. This is because the structural design of the planetary reducer is more compact and rigid, and the use of multi-gear transmission and multi-point contact technologies makes it have higher transmission efficiency and bearing capacity, and can also reduce the deformation and deviation of the gear in the gear transmission, so as to improve the accuracy. In addition, the weight and volume of the planetary reducer are relatively small, and a larger reduction ratio can be achieved in a smaller space, so in some occasions with higher requirements for precision and space, such as machine tools, robots, automated production equipment and other fields, the planetary reducer has been widely used.

However, spherical reducers also have their advantages, such as smooth torque, low noise, good durability and other characteristics, and also have certain applications in some specific fields.

Accuracy of planetary reducer:

The general accuracy is 5 to 6 points, and the higher accuracy can be 3 points.

Accuracy calculation method of planetary reducer:

The accuracy unit of the planetary reducer is arc minutes, the shaft rotates 360 degrees, one degree = 60 arc minutes, the measurement method is to fix the input end of the reducer, and the output end is in the forward and negative directions plus 20% of the rated torque The degree of rotation of the output shaft can be calculated according to the things connected to your output end (wheel or screw rod, etc.) and your final accuracy requirements.

The general accuracy is 5 to 6 points, and the higher accuracy can be 3 points.

I'll count the number of teeth, and I can only tell you the result.

Reduction ratio is one of the professional terms of planetary reducer, generally represented by the letter i, reduction ratio is the three main parameter values of planetary reducer to change a certain movement, and the speed, torque and moment of inertia are changed by the planetary reducer reduction ratio.

The formula for calculating the reduction ratio

The reduction ratio can be calculated according to the input speed and output speed of the planetary reducer, and the formula is the input speed and output speed = the reduction ratio of the planetary reducer.

Precision planetary reducer is a relatively precise machine, and the purpose of using it is to reduce the speed and increase the torque. According to the number of transmission stages, it can be divided into single-stage and multi-stage reducer, simple understanding of single-stage reducer refers to the reduction ratio is small, the two-stage reducer reduction ratio is large, the larger the reduction ratio, the more speed is reduced, the slower the output speed, but the greater the increased torque.

Reduction ratios commonly used in planetary gearboxes

Level 1 Level 2

These three reduction ratios are relatively rare.

So in the case of a certain power and a certain speed, the larger the speed ratio, the greater the torque. The smaller the speed ratio of the servo reducer, the smaller the output torque and the faster the output speed.

There are different algorithms depending on the output mechanism.

Taking the common mechanism, the inner ring gear is fixed, and the force is in the center of the sun tooth, and the output of the planetary gear bracket is (the number of internal ring teeth and the number of sun teeth) +1, taking the common reducer of general servo motor as the reduction ratio of 1 10 as an example.

The number of teeth in the inner ring gear is usually 108 teeth, so the number of sun teeth is 108 (10-1) = 12 (teeth).

It can be known that the reduction ratio is 1 5, and the sun gear is 108 (5-1) = 27 (teeth), and we can know why this kind of mechanism, the reduction ratio of 1 10 does not get the best output torque, and this is the reason.

The main functions of the reducer are: 1) reduce the speed and increase the output torque at the same time, and the torque output ratio is multiplied by the reduction ratio according to the output of the motor, but it should be noted that the rated torque of the reducer should not be exceeded. 2) Deceleration reduces the inertia of the load at the same time, and the reduction of inertia is the square of the reduction ratio.