Abstract
Spin angle controlled ball lapping method developed recently, is to have an excellent performance to lap the ball, in which V-groove lapping plates are separated into two parts and three plates are able to rotate independently. Present paper focuses on polishing characteristics of a steel ball using vesicant polyurethane pad. Experiments are conducted using an aluminum oxide grain ranging from 5.5 to 0.3 μ m in size. It is found that the surface roughness of steel ball polished by vesicant polyurethane pad is smaller than that of the cast iron lap. Experiments show that the grain size degradation is very effective for decreasing the surface roughness of ball. It describes that spin angle θ influence on both of the surface roughness and stock removal of the ball.
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