How to reduce the noise of ball mill?

　　At present, my country's deep ditch sealing ball bearings are almost the same, and the vibration and noise level of such products in my country is far from foreign products, main causes are manufacturing and conditional factors. Impact. Ball mills are considered from the bearing industry, and the working conditions can be resolved for the host, and how to reduce the vibration and noise caused by the manufacture factor is the problem that the bearing industry must solve.

　　For the ferrule, it affects the bearing vibration to be severely channel band and surface roughness. For example, when the internal and medium-sized deep groove ball bearing is greater than 2 μm, the bearing vibration will have a significant effect on the bearing vibration. When the internal and external channel wave cream is greater than 0.7 μm, the bearing vibration value increases with the wave crection, and the channel is severely smoothed. The vibration can rise up to 4 dB or even an abnormal sound.

　　Whether it is steel ball or a ferrule, the band is produced in grinding processing, although the superfine research can improve the corrugation and reduce the roughness, the fundamental measures are to reduce the corrugation in the grinding super-fine process. Degree, avoid randomness, mainly two measures:

　　First, the vibration of the rolling surface grinding is superficial, the ball mill obtains good surface processing shape accuracy and surface line quality to reduce vibration, grinding The ultra-machine bed must have good vibration resistance, and the beds, etc. have an enhancement property. The oil stone oscillation system of the super-fine machine has good anti-vibration performance; improves the grinding speed, foreign grinding 6202 external roller road generally uses 60,000 The electric spindle, the grinding speed is 60m / s, and the domestic is generally much lower, mainly due to the limits of the main shaft and the main bearing performance. When high-speed grinding, the grinding force is small, the grinding is thin, and it is not easy to burn, and the machining accuracy and efficiency can be improved. The low noise ball bearing is very affected; the spindle rustic stiffness and its speed characteristics pair low noise ball bearings The grinding vibration has a large influence, the higher the stiffness, the less sensitive variation of the grinding force, the smaller the grinding system; improve the spindle bearing rigidity, use the rapid balance technology, improve the grinding spindle Sex.

　　The second is to improve the precision of the processing benchmark surface, reducing the error of the abrasive overspeed process and the end face is the positioning baseline during the abrasive overspeaking process. The error of the outer diameter to the channel super fine is the mistake of the groove and trench on the trench through the outer diameter.Differential retests indirectly. If the workpiece generates bumps during the transfer, it will be directly recited to the surface of the raceway, and the ball mill affects the bearing vibration. Therefore, the following measures must be taken: increase the shape accuracy of the positioning reference surface; during the processing, the transfer is smooth, no hike; the blanket remains the image error cannot be too large, especially when the amount is small, the excessive error will cause final grinding and super fine The shape accuracy in the end has not improved the quality requirements of the final, which seriously affects the consistency of processing quality.