Main Measures To Reduce The Waviness

To avoid the randomness bump injury, there are two main measures:

First, to reduce the rolling surface grinding ultra-precision vibration, to get the good shape of the surface machining accuracy and surface texture quality in order to reduce vibration, grinding and superfinishing machine must have a good vibration resistance, bed structure with vibration absorbers, super precision machine tools Whetstone oscillating system with good anti-vibration performance; improve grinding speed, the outer raceway commonly used foreign grinding 6202 60000 electric spindle, grinding speed 60m / s or more, the domestic general much lower, mainly affected by the spindle and limit of the main bearing performance. In high speed grinding, the grinding force is small, grinding deterioration thin, is not easy to burn, they can improve the precision and efficiency, low noise ball bearing a great impact; spindle static and dynamic stiffness and speed characteristics of low-noise ball bearing grinding influence of vibration, the stiffness of the higher grinding speed on the grinding force is less sensitive to changes in the grinding system vibration; spindle bearings supporting rigid, using random balancing technology to improve the grinding spindle vibration sex. Foreign grinding head vibration speed (eg Gamfior) is about one tenth of the domestic general spindle; to improve the cutting performance of the grinding wheel Whetstone and finishing quality is essential.China's current wheel the Whetstone main problem is the organizational structure uniformly poor, and serious impact on low-noise ball bearing grinding super processing quality; full cooling, improve filtering accuracy; the resolution of fine to feed, lower feed inertia; reasonable grinding and superfinishing processing process parameters and machining processes can not be ignored, grinding allowance, shape and position tolerances and strict, small and medium-sized ball bearing outside diameter should not be Superfinishing, super coarse grinding should not be separated, in order to ensure a good surface quality.

The second is to improve the accuracy of machining datum and reduce grinding and superfinishing processing error reflection outside diameter and the face is locating datum in the process of grinding and superfinishing processing. Error reflection of outside diameter ultra-fine of the channel on the groove through the outer diameter grinding, groove grinding error reflection ditch super indirectly passed. If the work piece bump hurt in the transfer process will be directly re-mapped to the machined surface of the raceway to affect bearing vibration. It must take the following measures: to improve the positioning benchmark surface shape accuracy; processing pass smooth no bump hurt; rough stay in the amount of form and position error can not be too large, in particular, leave the amount is small, too large error will cause the final grinding and ultra-fine shape accuracy has not improved at the end of the final quality requirements, seriously affecting the processing quality and consistency.

It is not difficult to see from the above analysis: automatic line of high performance, high stability of the machine tool system grinding and superfinishing processing of low-noise ball bearing is the most appropriate, bump injuries can be avoided, reduce the transmission error, eliminate artificial factors, improve processing efficiency and quality consistency reduce production costs, improve enterprise efficiency.

With its high quality products such as Spiral separator, Cement rotating dryer, Cement mill, Rotary kiln, Sand maker, Henan Hongxing mining machinery Co.Ltd has ascended in the front rank of the world in the exporting of mining equipments.

by: nicole

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