Patent attributes
A milling head (16) for a milling machine (1) arranged for machining large-size workpieces comprises a fork 18, which is rotatably arranged around a first axis (C) and demonstrates a pair of fork arms (21, 22), which are separated from one another, a spindle device (23), which is arranged between the fork arms and rotatable around a second axis A, a first torque motor (42), which is coupled to the fork 18 for directly driving and controlling of the rotation of the fork around the first axis (C), and a second torque motor (57) for driving and controlling the rotation of the spindle around the second axis (A), said second torque motor being coupled to the spindle device (23) by means of a one-stage toothed gearing (61), which is mechanically clamped free of backlash. The configuration according to the invention is arranged to achieve high torque with high dynamic stiffness and small interference contour of the milling head (16).
