Patent ID: 9636755
Date: 2017-05-02
CPC Classifications: B23B,B23C,B23G,Y10T

Claim:
1. A tool for machining a wall of a workpiece, or a workpiece made from a composite material, configured to cut a furrow in the wall, the tool comprising: a head securely mounted on a stem of a longitudinal axis that can be driven in rotation about the longitudinal axis, the head comprising wherein the auxiliary projecting annular ribs comprise two circular edges separated by an annular band that is flat, a separation between the two circular edges of a single auxiliary rib increasing on approaching a longitudinal end of the head, wherein the auxiliary projecting annular ribs form a frustoconical portion, wherein the main projecting annular ribs are closer to a free longitudinal end of the head than the auxiliary projecting annular ribs, wherein the frustoconical portion increases towards the free longitudinal end of the head, and wherein the radial height of the two ribs closest to the free longitudinal end of the head is a maximum value of the radial heights of the ribs.