Device for exchanging part of tool and hollow milling tool

A device (1) for exchanging at least one cutting component (2a) of a rotating tool (2) for machining workpieces made of plastic, the device comprising:

• an aligning device (5) for orientating a position of the cutting component (2a) relative to a rotational axis (2c) of the tool (2), and
• an exchanging device (6) for releasing at least the cutting component (2a) from a part (2b) that remains on the tool (2) and for attaching another cutting component (2a) to the part (2b) that remains on the tool (2).

A hollow milling tool (2) for machining workpieces made of plastic, the milling tool comprising:

• an exchangeable cutting component (2a) and a part (2b) that remains on the tool (2), the cutting component (2a) and the part (2b) that remains on the tool (2) each have respective oblique surfaces (24, 25) that correspond with one another, and the cutting component (2a) and the part (2b) that remains on the tool (2) each have respective mating surfaces (26, 27) that are spaced away from the oblique surfaces (24, 25).

A device (1) for exchanging at least one cutting component (2a) of a hollow milling tool (2) that rotates about a rotational axis and machines plastic workpieces, the device comprising:

• an alignment device (5) which engages the cutting component (2a) and rotationally biases the cutting component (2a) about the rotational axis of the tool (2) to orient the cutting component (2a) in a desired rotational position;
• and
• a changing device (6) that is couplable with the cutting component (2a), the changing device (6) being actuatable to remove the cutting component (2a) from a tool part (2b) that is fixed to the tool (2) and attach another cutting component (2a) to the tool part (2b) that is fixed to the tool (2).