Patent ID: 11911834
Assignee: EMUGE-WERK RICHARD GLIMPEL GMBH & CO. KG, FABRIK FÜR PRÄZISIONSWERKZEUGE
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. 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 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≥2;
d) a chip divider is arranged on each of the n drill cutting edges, which chip divider forms an interruption of the respective drill cutting edge;
e) the axial depth of each chip divider measured in the axial direction to the tool axis is selected from a range of 0.5/n to 1.1/n multiplied by the axial feed of the drilling tool per revolution;
f) the axial feed of the forward movement of the drilling tool per revolution is at least 15% of a diameter of the drilling area of the drilling tool per revolution; and
g) the diameter (d1) of the drilling area in relation to the tool axis is at most 10 mm.