Abstract: A drilling tool has two main cutting edges each with an arcuate course at least in sections. The main cutting edges are connected to one another via a chisel cutting edge. The drill tool further has a drill face side, a drill longitudinal axis about which the drilling tool can be rotated in a rotational direction, a drill tip which lies on the drill longitudinal axis, two flutes which run along the drill longitudinal axis, webs which are formed between the flutes and form a land on the circumferential side, and a point thinning portion which is made in the drill face side. In relation to a frontal view of the drill face side, an opening angle of a flute is formed on the drill face side.

Abstract: A drilling tool, in particular a twist drill, has a substantially cylindrical main body formed with a shank portion, a cutting-edge portion having a drill diameter, and a drill end. The drilling tool is rotatable in a direction of rotation about a drill longitudinal axis. At least two flutes extend in a twisted manner along the drill longitudinal axis and are inclined with at least one helix angle. The flutes form a chip space. Webs are formed between the flutes with a web width. The chip space is formed with a chip space extension that enlarges the chip space in at least part of at least one of the flutes. The web width is reduced in the region of the chip space extension.

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 twist drill, has a substantially cylindrical main body formed with a shank portion, a cutting-edge portion having a drill diameter, and a drill end. The drilling tool is rotatable in a direction of rotation about a drill longitudinal axis. At least two flutes extend in a twisted manner along the drill longitudinal axis and are inclined with at least one helix angle. The flutes form a chip space. Webs are formed between the flutes with a web width. The chip space is formed with a chip space extension that enlarges the chip space in at least part of at least one of the flutes. The web width is reduced in the region of the chip space extension.

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.