轴承（Bearing）.docVIP

轴承（Bearing） The product of our country at present deep internal structure parameters of sealed ball bearings and advanced foreign companies are almost the same, however, the vibration and noise level of such products in China but with foreign products far, the main reason is the influence of manufacturing and operating factors. From the point of view of bearing industry, the factors of working conditions can be solved by the reasonable requirements of the host, but how to reduce the vibration and noise caused by the manufacturing factors is a problem that must be solved in the bearing industry. A large number of domestic and foreign test shows that the processing quality of the holder, rings, steel balls have different effects on bearing vibration, which affects the processing quality of the ball bearing vibration is most obvious, followed by the processing quality of rings, the main influencing factors are the steel ball and ring roundness, waviness, surface roughness, surface. Pengshang etc.. The most prominent problem is the product of steel ball vibration value of discrete large surface defects (single point, point group and pit), although the surface roughness, size, shape and error are not lower than the level of the outer ring, but after the bearing vibration value is high, even the noise, the main problem is the waviness no control (no standards, no appropriate test instrument, at the same time) anti vibration machine, grinding wheel, grinding wheel, the cooling liquid and the process parameters are a problem; on the other hand to improve the management level, to avoid the quality problems of the damage and scratches, burns and other machine at any time. For the ring, the most serious vibration of the bearing is the raceway waviness and surface roughness. For example, in the small deep groove ball bearings inside and outside the channel roundness of more than 2 mu m, will have a significant impact on bearing vibration, and waviness is greater than 0.7 m, the