| 摘要 |
A rotary cutting tool (10) with a longitudinal axis (16) includes a shank portion (12), a cutting portion (14), and a plurality of chipbreakers (30). The cutting portion includes a plurality of blades (18) and a plurality of flutes (20). The blades and flutes extend substantially along the length of the cutting portion. Each blade includes a leading face (22), a trailing face (24), and a land surface (26) that extends between the leading face and the trailing face. The chipbreakers (30) are disposed in the land surfaces of the blades. The chipbreakers on each blade are equidistant from each other and are distributed in a reverse chipbreaker pattern among the blades such that each chipbreaker on a preceding blade is closer to the cutting tip than a corresponding chipbreaker on an immediately adjacent following blade for a particular direction of rotation of the rotary cutting tool. |
