| 摘要 |
A cutting, self-rotating, and self-sharpening tool has a rotatable cutting element, generally circular, which is mounted and displaced so that cutting element has an attack angle between 90 DEG and 120 DEG , and a skew angle between 5 DEG and 40 DEG . The cutting element has a convex front face and relief and rake angles that vary along the perimeter of the cutting edge.
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