Rotary tool, in particular a drill, and a cutting head for said rotary tool

A rotary tool which extends in an axial direction along an axis of rotation, the rotary tool comprising:

• two coupling parts, comprising a carrier and a cutting head;
• the cutting head comprising a coupling pin and being exchangeably attached to the carrier;
• the carrier comprising:
• an end surface and fastening webs disposed at the end surface, wherein the fastening webs comprise inner shell surfaces;
• and
• a pin receiver delimited by the fastening webs;
• the coupling pin comprising outer shell surfaces;
• wherein the coupling pin is clamped into the pin receiver via turning the cutting head relative to the carrier;
• each of the inner shell surfaces and outer shell surfaces comprising torque sections and clamping sections formed thereon;
• the torque sections of the inner shell surfaces and the torque sections of the outer shell surfaces abutting against one another pairwise, for transmitting a torque;
• the clamping sections of the inner shell surfaces and the clamping sections of the outer shell surfaces abutting against one another pairwise, for transmitting a radial clamping force;
• wherein the clamping sections and the torque sections of the inner shell surfaces and of the outer shell surfaces are oriented at the same angle with respect to the axis of rotation;
• and
• the pin receiver and the coupling pin each comprising stop surfaces for preventing axial pull-out of the cutting head, wherein the stop surfaces are configured and disposed to act in a generally axial direction with respect to one another.