How does the circular reducer reduce gear noise

There are also many methods of noise reduction, which can be divided into two categories: one is to actively reduce noise from the design, which enables the product to have low-noise performance at the beginning of its formation, and then uses certain technical measures such as manufacturing and assembly to make the product Products are easier to meet lower noise requirements. The other type is that the product has already been formed, and passively take remedial measures to reduce noise on the product, so that the product can meet the predetermined low-noise performance requirements; However, the method of improving the gear precision and assembly precision is to pay a great economic price, and the improvement of precision also has a certain limit and cannot be endless. Through the research on gear transmission noise and the analysis of the international research situation, Brashany emphasizes the use of damping materials on gears and installation, paying attention to gear design, measurement, inspection and matching with good box design, which is to make gear transmission emit noise. method with less noise. Studying the influence of the external damping layer on noise, especially the noise reduction remedy for the produced equipment, has the advantages of simplicity, convenience, low economic cost, no need to make any changes to the equipment structure, significant noise reduction effect, and high cost performance. The improvement of equipment can be comprehensively controlled with other noise reduction measures. In this way, under the current market economic conditions, it not only enhances the market competitiveness of products, but also improves performance and economic benefits. It is a better method that fully meets the national conditions. In this paper, through experimental research, the noise reduction of the external damping layer is deeply discussed, and the direction of the main damping layer is proposed. Due to the many types of gears and the limitation of experimental conditions, this paper focuses on the research of involute spur gears. Experimental results In order to explore the effect and application of damping materials in reducing gear transmission noise, the following experiments were done in this study. Except for low speeds, the noise when sticking plastic or rubber is almost lower than the noise without damping material, which shows that the noise reduction scheme of sticking damping material is correct. The noise reduction effect is particularly obvious in the high-speed area, which can be reduced by 2-4 decibels, which is what we expect, because solving the noise of the gear at high speed is the key to solving the problem of a pair of gears, the entire transmission system and the noise of the entire machine. This is of crucial significance for gear noise reduction. Paste the damping material, the noise reduction effect of the speed reduction transmission is more obvious than that of the speed increase transmission. The reason is that the input speed is the same at this time, and the output speed of the speed-down transmission is much lower than that of the speed-up transmission, so the sum of the speed of the transmission shaft is smaller and the noise is also smaller. Only the noise when the large gear is pasted with the damping material is almost lower than the noise of the large and small gears with the damping material pasted.