Drill bit with changeable cutting insert

摘要

The drill bit has a cylindrical holder (10) with a groove (14) in which a hard metal cutting insert (25) is fitted. The holder also contains clamping and stop elements acting on the insert., acting so that the forces acting on the cutting insert create a torque in the opposite direction to the cutting direction of the drill. Below the bottom of the groove, there is a clamping slit (70) containing a clamping element running across it.