Patent ID: 8118370

Claim:
Milling head for machining the head of a pile consisting of a pile core, a pile shaft and a metal reinforcement lying therebetween, the milling head comprising: a coupling device for attaching the milling head to a drive shaft of a drive device; an annular milling cutter with a hollow assembly cylinder connected to the coupling device; an outer assembly ring fixedly or detachably connected to a lower side of the hollow assembly cylinder; a plurality of annular picks attached fixedly or detachably within an outer circular ring on a lower side of an outer assembly ring; a central milling cutter with a shaft that is aligned along an axis of the hollow assembly cylinder; a central boring unit and a plurality of central picks attached fixedly or detachably within a central circular ring on a lower side of the central milling cutter, wherein the outer circular ring and the central circular ring, which are separated from one another by a middle circular ring, are aligned at least approximately perpendicular to and concentric with a longitudinal axis of the drive shaft.