What is the cause of the loud gear noise, what is going on, and how to solve it?

What is the cause of the loud gear noise, what is going on, and how to solve it?For this series of problems, many people may not know very well. The following editor has compiled some explanations of the reasons for the loud gear noise and the treatment methods for your reference.

Five reasons for loud gear noise:

1. The surface finish is not enough

gearThe surface is too unsmooth, the friction surface is large when rubbing against each other, the vibration frequency is high, and the noise caused is large and large.

2. Running vibration speed is too fast

The high vibration speed during gear operation will affect the frequency of vibration and cause noise.

It is usually caused by too fast frequency in the transmission, resulting in too fast vibration frequency between the gears.

3. Load shock and vibration

When the gear is subjected to a different level of load, the frequency of vibration and the direction of torsion will also be different, most of which will cause vibration in the circumferential direction.

In addition, the product itself is dealing with noise issues, which will cause smooth noise without screaming.

4. Not properly lubricated

Looking at the use of lubrication effects for gear maintenance and noise reduction abroad, more emphasis is placed on the lubrication method, that is, the method of using the lubricant to completely enter the gear to reduce noise.

In gear maintenance and noise reduction, not only good lubricants can reduce the friction and vibration between products, but also the use of good lubricants is the main method to reduce and reduce noise.

5. Resonance noise

According to the vibration caused by the poor rigidity of the gear itself and the vibration caused by the friction between them are at the same vibration frequency, the interaction between the two can easily cause resonance and generate noise caused by resonance.

Some methods to solve gear noise:

1. Product design

From the perspective of gear design, as long as the product causes vibration during operation, it will cause sound waves and then noise.

The noise caused by gear transmission not only affects the working environment, but also affects the machining accuracy of some precision parts. For practical problems, corresponding countermeasures are taken to reduce noise.

2. Gear friction

When selecting gears, products with smooth surfaces should be used as much as possible, and products with non-smooth surfaces and high friction must be used.

3. Load

When selecting gears for corresponding processed products, replace the products reasonably according to the required weight of different products to prevent noise caused by part of the gear transmission process that cannot bear the corresponding weight.

4. Improve gear lubrication

For gear lubrication to reduce noise, we should not only start with the selection of lubricants, but also innovate the method of product lubrication, save lubricants, improve gear usage efficiency and reduce noise.

5. Change the plan

helical gearStable, less meshing impact, and not easy to cause resonance.

So useSpur gearChanging to a helical gear is also one of the main methods to solve the transmission noise.

6. Bearing movement

Not only is it required to design the design of this pair of gear bearings, it also includes the inspector’s regulatory requirements for the number of gear bearing cycles. The designer’s guarantee period for the design of the bearing can withstand the amount of error that the gear transmission should be able to withstand, and the prediction in the design of the gear There may be some design flaws within a reasonable range.

7. Tooth shape correction method

Apply red lead powder to the gear for meshing, and then use assorted to correct the meshing points of the gears, so that the meshing points of the product are basically distributed near the index circle, and the meshing accuracy of the product is improved.

After careful installation, the transmission accuracy of the gear can be greatly improved, achieving the purpose of eliminating noise.

8. Frequency of vibration

When designing the product, it is necessary to pay attention to the speed of the gear movement, that is, not to allow it to rotate too fast, but to specify the number of cycles it should run within a certain period of time.

The above descriptions of gear noise causes and solutions are for reference only. For related questions, you can directly seek help from EP Technology.