Study On Dual-Plane Polishing Technology For Precision Ceramic Balls

Precision ceramic ball plays an important role in the field of precision engineering, which is widely used in precision bearings. It has a series of excellent features, such as light weight, insulating, a resistance to elevated temperatures, corrosion resistance, wearability and bears the lack of oil lubrication. However, precision ceramic ball is also the most vulnerable parts in the precision bearing, its surface quality directly affects the precision bearing work stability and working life. For this reason, many scholars have proposed a variety of processing methods, but these methods are often limited by precision problems or operational control agency problems and production capacity.This paper presents a new ball polishing method of dual-plane ball polishing method for precision ceramic balls, dealing with traditional ball process method have a shortage of difficult to obtain high surface quality. The main studied contents and conclusions are as follows:1. A mathematics model of polishing process is established by disintegrating the process to the movement of the ball, the function expression of self-rotation angular and self-rotation angular velocity is got, then analysis the spherical trajectory on the ball surface and compare the track uniformity with other ball processing method. Surface trajectory uniformity is optimized analysis by simulating different motion parameters in MATLAB software.2. A simplified motion model is established in ADAMS software, simulate the processing trace on the ball by different motion parameters, and process the data in the MATLAB, then quantitative analysis the standard deviation of the spherical trajectory point distribution on the ball surface. The correctness of the trajectory equation is demonstrated by comparing the simulation conclusion with theory trajectory.3. By studying the tribo logical property of the ball on soft pad, Some process parameters which will effect ball movement characteristics are preliminary obtained. The removal model and wear model is related with the movement of the balls during the polishing. Through the three experimental group contrast, the wear form between the ball and polishing pad is got in different polishing parameters. The benefits of micro sliding on the surface material remove is analyzed and the slide momentum slipped reason of the ball in the disk is summarized4. In order to verify the theoretical analysis of the processing parameters, experiment is operated in different polishing plate speed, polishing pressure, the distance between the hole and polishing disk center, and the ball size, analysis the consistency of the experimental data curve and theoretical simulation curve. At the same time, the orthogonal experiment and process optimization experiment is operated, perfect polishing surface and spherical error can be obtained under the proper process parameters.This paper studies the application of ball dual-plane polishing method to ceramic ball polishing, by using soft pad and soft abrasive, avoid the surface mechanical damage, perfect polishing surface and spherical error can be obtained, which has great meaning in the study on the precision ceramic ball processing.