Disclosed herein is a drill device comprising:
- a housing (2);
- a drill spindle unit (12) arranged at least partially in the housing (2), the drill spindle unit (12) comprising a drill assembly (32), the drill assembly (32) comprising bearings (40), a first coupling portion (30), a drill axle (44) configured to receive a drill, the drill axle (44) being embedded in the bearings (40) and being configured to rotate about a longitudinal axis (a), the drill spindle unit (12) further comprising at least a first elastic element (26) that is at least partially compressed when it is mounted in the drill device.
The drill device further comprises a pulse spindle unit (14) having a cylinder-shaped pulse spindle (34) that can be rotated about its longitudinal axis (b), the cylinder-shaped pulse spindle (34) being at least partially arranged within the housing (2), the cylinder-shaped pulse spindle (34) comprising a milled surface area (50) on the lateral surface. The longitudinal axis (b) of the cylinder-shaped pulse spindle (34) is arranged perpendicular to the longitudinal axis (a) of the drill axle (44), the drill spindle unit (12) being arranged so that the first coupling portion (30) is pushed towards the cylinder-shaped pulse spindle (34) so that along the longitudinal axis (a) of the drill axle (44) pulses can be generated when the cylinder-shaped pulse spindle (34) is rotating due to the lateral surface of the cylinder-shaped pulse spindle (34), which lateral surface is interrupted by the milled surface area (50) and due to the pre-compression of the elastic force of the at least partially compressed first elastic element (26).