Coupling part for rotary tool and rotary tool including same

A rotary tool comprising:

• a coupling part, which is designed as a cutting head;
• and
• a complementary coupling part, which is designed as a carrier,
• wherein the coupling part comprises a pair of coupling pins arranged opposite each other with respect to a central longitudinal axis and are spaced apart from each other so as to form a receiving space structured to receive a central pin of the complementary coupling part, wherein each coupling pin comprises:
• a stop surface for transmitting a torque;
• a radially external outer surface;
• and
• a radially internal inner surface,
• wherein at least one of the outer surface or inner surface is a clamping surface oriented in an obliquely inclined manner with respect to the central longitudinal axis for centering and clamping the coupling part,
• wherein the complementary coupling part comprises two coupling receptacles, between which a central pin is arranged, each coupling receptacle structured to receive a respective coupling pin of the pair of coupling pins, and
• wherein the cutting head is fastened interchangeably on an end side of the carrier.