An earth-boring milling head

The present invention discloses a milling drill, the front end surface of the mounting plate through the pipe cutter disk activity, wherein the two parallel linear guides fixedly mounted to the base plate, fixedly mounted on the linear guide casing. By screw bearing block mounted on the floor, and the housing is formed with screw nut. Case linearly movable along the guide rail, driven screw. Portland hydraulic motor fixedly mounted by means of the rear end face of the housing, the rear end of the motor shaft extending into the cylindrical bore in the spindle, two connections with the key. Bidirectional single pivot spindle fixed form. Tool and the collet are integrally connected. In the installation of the pipe cutter movable disk wedge pad, drilling milling power unit mounted on the fixed wedge pad is changed the angle of inclination of the drill milling power unit assembly, inclined milling tool, can be achieved during the cutting of the conduit, out of the end face directly to the pipe welding groove, and the groove pipe cutting implement one job. The present invention is simple in structure, easy to implement.