Modular carrier tool and tool head

1. A modular carrier tool which extends along a central longitudinal axis in an axial direction and comprises a carrier as well as a tool head that can be reversibly mounted on a front-end of the carrier, wherein:

the carrier comprises:

a head retainer for the insertion of the tool head; and

clamping webs which define radially outermost portions of the head retainer and include bearing surfaces extending along a radial direction; and

the tool head comprises:

clamping surfaces extending in an axial direction;

underhead bearing surfaces;

flute sections; and

torque transmission surfaces which:

extend radially to an outer periphery of the tool head; and

extend axially from the underhead bearing surfaces toward a front of the tool head;

wherein, along a peripheral direction of the tool head, each of the underhead bearing surfaces extends between one of the torque transmission surfaces and one of the flute sections;

wherein, in a mounted state:

the clamping webs clamp the tool head to the clamping surfaces in a radial direction with respect to the central longitudinal axis; and

the underhead bearing surfaces are pressed against the bearing surfaces of the carrier;

wherein the bearing surfaces of the carrier and the underhead bearing surfaces are tilted at a tilt angle defined along a radial direction with respect to the central longitudinal axis, such that in the mounted state a force component is exerted on the clamping webs in a radial direction with respect to the central longitudinal axis.

2. The carrier tool according to claim 1 , wherein:

the bearing surfaces of the carrier and the underhead bearing surfaces are tilted radially outwardly, such that the exerted force component is oriented in a radial direction towards the central longitudinal axis.

3. The carrier tool according to claim 1 , wherein the tilt angle is in the range of 0.5 to 10°.

4. The carrier tool according to claim 1 , wherein the underhead bearing surfaces and the bearing surfaces of the carrier are conical shell segments.

5. The carrier tool according to claim 1 , wherein:

the clamping webs each have an open front end face;

each open front end face, in the mounted state, is not covered by the tool head;

the bearing surfaces of the carrier are recessed, in an axial direction, relative to the open front end faces; and

surfaces for torque transmission are formed between the end faces and the bearing surfaces of the carrier.

6. The carrier tool according to claim 1 , wherein, for clamping retention in the head retainer, a fastening pin is adjoined to the underhead bearing surfaces in an axial direction.

7. The carrier tool according to claim 1 , wherein:

the carrier has flutes; and

the flutes are extended into the tool head as the flute sections.

8. The carrier tool according to claim 1 , wherein the tool head is configured to be fastened in the head retainer solely via clamping.

9. The carrier tool according to claim 1 , wherein the carrier tool is a drilling tool.

10. A tool head for reversible fastening in a carrier for a carrier tool, the tool head extending in an axial direction along a central longitudinal axis, the tool head comprising:

clamping surfaces extending in an axial direction;

underhead bearing surfaces extending in an axial direction, via which the tool head sits on bearing surfaces of the carrier in a mounted state;

flute sections; and

torque transmission surfaces which:

extend radially to an outer periphery of the tool head; and

extend axially from the underhead bearing surfaces toward a front of the tool head;

wherein, along a peripheral direction of the tool head, each of the underhead bearing surfaces extends between one of the torque transmission surfaces and one of the flute sections;

wherein the underhead bearing surfaces are tilted at a tilt angle defined along a radial direction with respect to the central longitudinal axis.

11. The tool head according to claim 10 , wherein:

the underhead bearing surfaces are radially tilted in an outwardly sloped manner.

12. The tool head according to claim 9 , wherein the tilt angle is in the range of 0.5 to 10°.

13. The carrier tool according to claim 6 , comprising:

an insertion pin which extends axially away from the fastening pin, wherein the insertion pin and fastening pin are concentric with respect to one another;

the insertion pin defining a smaller outer diameter than the fastening pin;

the carrier including a receptacle for the fastening pin and a receptacle for the insertion pin;

the receptacle for the fastening pin and the receptacle for the insertion pin being concentric with respect to one another.

14. A modular carrier tool comprising:

a carrier for accommodating a tool head, the carrier comprising bearing surfaces extending along a radial direction with respect to a central longitudinal axis of the modular carrier tool; and

a tool head comprising:

underhead bearing surfaces which engage with the bearing surfaces of the carrier, when the tool head is accommodated in the carrier;

flute sections; and

torque transmission surfaces which:

extend radially to an outer periphery of the tool head; and

extend axially from the underhead bearing surfaces toward a front of the tool head;

wherein, along a peripheral direction of the tool head, each of the underhead bearing surfaces extends between one of the torque transmission surfaces and one of the flute sections;

wherein the bearing surfaces of the carrier and the underhead bearing surfaces are tilted at a tilt angle defined along a radial direction with respect to the central longitudinal axis.

15. The modular carrier tool according to claim 13 , wherein the tool head is configured to be reversibly mounted at a front-end of the carrier.