Quick-change tool holder system for a cutting tool

1. A quick-change tool holder system, comprising:

a base part having a quick-change tool holder receptacle and a supporting projection having an outer side wall in a radial direction (R); and

a quick-change tool holder configured for insertion into the quick-change tool holder receptacle and comprising a cutting tool receptacle configured for receiving a round-shaft pick with the cutting tool receptacle having a longitudinal axis (A 1 ),

wherein the quick-change tool holder has a bearing body and a base gripping part which protrudes radially in relation to a direction of insertion (B) of the quick-change tool holder in the base part and which projects in the direction of insertion (B), which base gripping part grips the supporting projection on the base part in an inserted state,

wherein the base gripping part has a contact surface for contact with the outer side wall of the supporting projection, with the contact surface being planar and extending along an axis that runs obliquely to the longitudinal axis (A 1 ) and intersects with the longitudinal axis (A 1 ) at an angle (α) of greater than 0° and up to 15°, and

wherein the supporting projection is undercut in a direction of insertion (C).

2. A quick-change tool holder system according to claim 1 , wherein the base gripping part and the supporting projection are configured with respect to one another in such a way that the quick-change tool holder is mounted in the base part in a non-rotatable manner.

3. A quick-change tool holder system according to claim 1 , wherein the base gripping part has an angled profile.

4. A quick-change tool holder system according to claim 1 , wherein the base gripping part is a stop bar arranged askew to the direction of insertion (B) of the quick-change tool holder.

5. A quick-change tool holder system according to claim 1 , wherein the supporting projection is part of a groove in the base part.

6. A quick-change tool holder system according to claim 1 , wherein the quick-change tool holder and the base part are configured such that the longitudinal axis of the quick-change tool holder receptacle is coaxial to the longitudinal axis of the cutting tool receptacle.

7. A quick-change tool holder system according to claim 1 , wherein the supporting projection has an insertion stop.

8. A quick-change tool holder system according to claim 1 , wherein a securing device is provided.

9. A quick-change tool holder system according to claim 8 , wherein the securing device is a connecting screw between the base part and the quick-change tool holder.

10. A quick-change tool holder system according to claim 1 , wherein the bearing body is configured in the shape of a cone.

11. A quick-change tool holder system according to claim 1 , wherein the bearing body is configured in the shape of a cylinder.

12. A quick-change tool holder system according to claim 10 , wherein the bearing body is sealed vis-à-vis the base part in the inserted state.

13. A quick-change tool holder system according to claim 1 , wherein the quick-change tool holder and the base part exhibit an access opening via which the cutting tool receptacle is accessible from a rear area.

14. A quick-change tool holder system according to claim 11 , wherein the bearing body is sealed vis-à-vis the base part in the inserted state.