Patent ID: 8690262

Claim:
A heading machine, comprising: a machine frame; a running gear comprising a crawler track; and a cutting unit comprising an arm arranged on the machine frame, no more than one disc-shaped tool holder mounted rotatably on the arm, and disc tools held on the tool holder, wherein the arm is mounted pivotably in a vertical direction relative to the machine frame to pivot about an axis essentially parallel to a plane of a floor, by operation of a vertical pivoting mechanism that moves the arm in the vertical direction, the arm is mounted pivotably in a horizontal direction relative to the machine frame about an axis essentially perpendicular to the plane of the floor, by operation of a horizontal pivoting mechanism that moves the arm in the horizontal direction, the tool holder rotates around a rotational axis that runs transversely to a longitudinal axis of the arm, and runs transversely to the axis of the vertical pivot of the arm relative to the machine frame, said tool holder being arranged to allow the disc tools to be brought into contact with material to be removed over part of a circumference of the tool holder, and a plurality of discs or disc bundles respectively are formed inclined in direction towards the rotational axis of the tool holder.