Drilling tool

摘要

The drilling tool according to the invention serves to produce undercuts in drilled holes and consists of a drill which is pivotably supported in a predrilled hole via a bearing part designed as a sleeve. At one end, the drill has a connecting piece for accommodating in a drive machine, while its other end is designed as a drill head with a multiplicity of cutting parts arranged at a distance one behind the other in the peripheral direction and having at least one cutting edge each. The pivotable mounting of the drill is obtained by an appropriate design of the bearing part, namely by the edge of a bottom-side passage opening of the sleeve for the shank of the drill or the edge of the wider end of a frustoconical sleeve.