Noise control has become a more important part of modern gear processing. The level of gear noise control not only represents the quality level of the gear plant, but is also directly restricted by relevant environmental regulations. Due to manufacturing and installation errors and other factors, the gear teeth will produce shock and vibration during the meshing process. The process of a pair of gear transmissions is a complex motion process, and there are many problems. In the production practice of small and medium-sized enterprises, there are problems such as noise, shock, vibration, broken teeth (broken teeth), tooth surface pitting (pitting), and wear. Noise is one of the environmental hazards. With the increasing number of high-power machinery and equipment, noise will also become more and more serious. Not only reduces work efficiency, endangers the health of employees, but also affects product quality and restricts the upgrade of some product quality, which will also directly affect the economic benefits of the enterprise. Therefore, controlling noise is of great significance ..
The relationship between gear accuracy and noise
No matter which type of phenotype has a great relationship with the meshing accuracy of gear transmission, gear manufacturing, and installation accuracy.
Tooth profile error in gear accuracy has a great effect on gear noise in meshing. Not only the influence on the magnitude of the error value, but also the influence on the shape of the error curve. Practice has proved that when the tooth profile with a convex tooth profile is used, the noise during transmission is small. Because the tooth shape error is measured on a special measuring instrument, and because the general manufacturer does not have this testing instrument, it often ignores the inspection of this error, resulting in excessive gear noise.
Tooth pitch deviation is also a factor that causes gear noise. It was found during the field test that gears with tooth pitch deviations that meet or are close to the tooth pitch limit deviation. Due to the different deviation values, the measured noise values also generally differ by 2-3dB A) (There are also other factors here). This error can generally be detected by factories, which is also an important factor causing gear noise.
In addition, the gear is not installed properly, which causes the contact accuracy of the gear to deteriorate, resulting in a large meshing impact and a large gear noise. This is also a factor that cannot be ignored.
