| 摘要 |
A burnishing apparatus is provided for burnishing a surface of a material. The burnishing apparatus includes a guide member having an annular groove which is eccentric to the rotating axis of the guide member. A rolling element is disposed between the groove and the surface of the material. The rolling element has a radius r, an effective rolling radius on the guide member r1, and an effective rolling radius r2 on the surface of the material, and r=r2 and r1<r2. Due to the combined effects of an eccentric groove and r1<r2, a variable track is left on the surface of the material as the rolling element rolls along the groove and on the surface of the material. The variable track repeats after the rolling element revolves around the surface of the material N revolutions. The burnishing apparatus may further include an actuator which drives a top cover onto the material to force the surface of the material on the rolling element. The burnishing disk may be rotatively driven by a motor. When a plurality of rolling elements are used, the burnishing apparatus may further include a retainer for fixing the relative position of the rolling elements.
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