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Ball is simple in shape, and is easy to be ground and polished to high precision. However, the mechanism of ball grinding has not been clarified yet, and in fact, there are some misunderstandings of it. The purpose of the paper is to study the ball grinding mechanism in magnetic fluid grinding of ceramic balls by using the different eccentricities between the driving shaft and the guide ring. The experimental results showed that when the eccentricity was greater than a critical value the sphericity of ground balls was improved greatly. It was found that the removal rate was increased with the eccentricity while the surface roughness of ground balls was independent of the eccentricity.

Effect of the Eccentricity between the Driving Shaft and the Guide Ring on the Behavior of Magnetic Fluid Grinding of Ceramic Balls.