Drilling tool and method for producing a borehole

A drilling tool for producing a bore with a cylindrical inner wall, wherein:

• a) the drilling tool is rotatable in a rotary movement with a predetermined rotational direction (VD) about a tool axis (A) extending through the drilling tool and at the same time is movable in an axial forward movement (VB) in a forward direction axially to the tool axis;
• b) the drilling tool comprises at least one drilling area arranged in a forwardly located region of the drilling tool at a forward or free end, but preferably not having a thread forming region;
• c) the drilling area has a number n of drilling edges which are arranged offset to each other in the rotational direction, where n is a natural number with n≥1;
• d) at least one chip divider is arranged on at least one or each of the n drill cutting edges, which chip divider forms an interruption of the respective drill cutting edge.

A method for producing a bore with a cylindrical inner wall without thread, comprising:

• a) using a drilling tool for producing a bore with a cylindrical inner wall,
• wherein the drilling tool is rotatable in a rotary movement with a predetermined rotational direction (VD) about a tool axis (A) extending through the drilling tool and at the same time is movable in an axial forward movement (VB) in a forward direction axially to the tool axis,
• wherein the drilling tool comprises at least one drilling area arranged in a forwardly located region of the drilling tool at a forward or free end, but preferably not having a thread forming region,
• wherein the drilling area has a number n of drilling edges which are arranged offset to each other in the rotational direction, where n is a natural number with n≥1,
• wherein at least one chip divider is arranged on at least one or each of the n drill cutting edges, which chip divider forms an interruption of the respective drill cutting edge;
• b) rotating the drilling tool, when producing the bore, in a forward rotational movement in a predetermined forward rotational direction (VD) about the tool axis (A) running through the drilling tool and at the same time is moved in an axial forward movement (VB) in a forward direction axially to the tool axis;
• c) moving the drilling tool out of the produced bore in an axial backward direction opposite to the forward direction while continuing to rotate the drilling tool in the forward rotational direction (VD).