Machine tool for machining a workpiece and spindle carrier assembly for use on such a machine tool

A machine tool for machining a workpiece, comprising:

• a machine bed,
• a workpiece clamping portion, which is arranged on the machine bed and serves to clamp a workpiece on the machine tool,
• a swivel arm receiving portion arranged on the machine bed,
• a first swivel arm pivotally mounted on the swivel arm receiving portion about a first axis of rotation,
• a second swivel arm pivotally mounted on the first swivel arm about a second axis of rotation,
• a spindle carrier arm rotatably mounted on the second swivel arm about a third axis of rotation,
• a milling head rotatably mounted on the spindle carrier arm about a fourth axis of rotation, and
• a tool spindle which is held on the milling head and serves to receive a tool, wherein the third axis of rotation is aligned perpendicularly or transversely to the fourth axis of rotation,
• the swivel arm receiving portion has two swivel arm support bodies, and
• the first swivel arm is held so as to be pivotally mounted between the two swivel arm support bodies, wherein
• one of the swivel arm support bodies is smaller than the other swivel arm support body of the two swivel arm support bodies.