Abstract: A cutting tool for machining fiber composite materials has clamping section and a cutting section which extend along a longitudinal axis. The cutting section has a basic cylindrical shape. First chipping flutes form left-hand spirals and second chipping flutes form right-hand spirals. Intersecting first and second chipping flutes form a plurality of discrete cutting elements on the cutting section. The cutting elements have a first circumferential cutting edge running along a left-hand spiral and a second circumferential cutting edge running along a right-hand spiral. The cutting edges run along a common enveloping cylinder surface that defines the outer circumference of the cutting section. The first and second circumferential cutting edges open into a common tip. Primary free surfaces adjoin the circumferential cutting edges in the circumferential direction and they adjoin one another along a first free surface edge.

Abstract: A drilling tool, in particular a spiral drill, has a drill longitudinal axis, at least two flutes extending at a twist angle with respect to the drill longitudinal axis, webs formed between the flutes, and lands formed on a lateral surface of the webs. Guide rings are at least partially formed on the lands. The guide rings extend at an angle different from the twist angle to the drill longitudinal axis. At least one guide chamfer is formed on at least one land in addition to the guide rings. The guide chamfer extends parallel to the twist angle and in front of the guide rings with respect to the direction of rotation of the drilling tool.

Abstract: A drilling tool, in particular a spiral drill, has a drill longitudinal axis, at least two flutes extending at a twist angle with respect to the drill longitudinal axis, webs formed between the flutes, and lands formed on a lateral surface of the webs. Guide rings are at least partially formed on the lands. The guide rings extend at an angle different from the twist angle to the drill longitudinal axis. At least one guide chamfer is formed on at least one land in addition to the guide rings. The guide chamfer extends parallel to the twist angle and in front of the guide rings with respect to the direction of rotation of the drilling tool.