Machine tool for machining

A machine tool for machining a work tool comprising:

• a motor spindle for the rotative actuation of a tool about a spindle axis, wherein the motor spindle is supported by a stand, and wherein a turning bearing is provided at the stand, and the motor spindle is mounted on a spindle bed and is pivotable and positionable at the turning bearing about a first turning axis;
• and
• a linear guide at the motor spindle, which enables an advancing movement of the tool parallel to the spindle axis, wherein the spindle bed is configured in a cage-like or tunnel-like manner, in particular, wherein the spindle bed has clamping surfaces at the spindle bed end lying opposite of the bearing element of the turning bearing, and the turning bearing has an arc-shaped clamping segment to fix the clamping surface of the spindle bed at the clamping segment with aid of a clamping device.