| 主权项 |
1. A cutting head for a cutting tool, comprising:
a cutting portion, the cutting portion having a plurality of integrally formed cutting edges; and a shank portion, the shank portion having a first end adjacent the cutting portion and a second end, wherein the shank portion has a first portion of the shank portion having a first diameter, a second portion of the shank portion having a second diameter smaller than the first diameter, and a cylindrical third portion of the shank portion having a third diameter larger than the second diameter and smaller than the first diameter, the first portion of the shank portion being closer to the first end of the shank portion than the second and third portions of the shank portion and the third portion of the shank portion being disposed closer to the second end of the shank portion than the first and second portions of the shank portion, the first portion of the shank portion having an exterior surface comprising at least one axially extending recess extending from an end of the first portion of the shank portion closest to the second portion of the shank portion toward the first end of the shank portion, and in that the cutting head is entirely formed of a pressed and sintered cemented carbide material. |
