| 摘要 |
The invention relates to a single-lip drill, comprising at least one cutter formed on a drill head, which cutter has at least one cutting edge, wherein the cutting edge angle (?r1) at the outermost point (P1) of the cutter, which is closest to the circumference of the drill head, is greater than 90°, and the cutting edge angle (?r2) at the innermost point (P2) of the cutter, which is closest to the center drill axis (A), is less than 90°, said single-lip drill being characterized in that the at least one cutter has a strongly convexly curved contour, a point (P3) of the convex contour placed the furthest in the feed is arranged at a distance (E) from the circumference of the drill head that corresponds to a fifth to a third, in particular a fourth, of the drill diameter (D). |
