| 摘要 |
A cutting tool in the form of a drill bit or end-milling tool has an elongated body formed with at least one cutting edge defined by a flank of a flute running primarily along a rotation axis of the body and having leading and trailing flanks one of which is formed with wavelike and spaced projections and recesses. The depth of these grooves and, hence, the height of the projections increases toward the end cutting edge to break up chips. |
