US 11,969,804 B2
Deep-hole drill having a plurality of chip-forming devices and recesses in the rake face
Gotthold Schur, Neuffen (DE); and Jürgen Deeg, Metzingen (DE)
Assigned to botek Präzisionsbohrtechnik GmbH, Riederich (DE)
Appl. No. 16/973,503
Filed by botek Präzisionsbohrtechnik GmbH, Riederich (DE)
PCT Filed Mar. 21, 2019, PCT No. PCT/EP2019/057071
§ 371(c)(1), (2) Date Dec. 9, 2020,
PCT Pub. No. WO2019/238288, PCT Pub. Date Dec. 19, 2019.
Claims priority of application No. 10 2018 114 138.6 (DE), filed on Jun. 13, 2018.
Prior Publication US 2021/0245268 A1, Aug. 12, 2021
Int. Cl. B23B 51/06 (2006.01); B23K 26/362 (2014.01)
CPC B23B 51/066 (2022.01) [B23B 51/063 (2022.01); B23B 2251/248 (2013.01); B23B 2251/48 (2013.01); B23B 2251/56 (2013.01); B23K 26/362 (2013.01)] 6 Claims
OG exemplary drawing
 
1. Deep hole drill comprising a drill head, the drill head having an axis of rotation, a drilling diameter (D), and one or two cutting edges, a planar rake face being assigned to each cutting edge, and the deep hole drill having one or two secondary cutting edges, characterized in that in each planar rake face a plurality of chip-forming devices and/or a plurality of depressions are arranged in spaced intervals along the central axis, wherein the chip-forming devices and/or the depressions in a sectional plane (C) which extends orthogonally to the one or two cutting edges have the shape of an isosceles or uneven triangle.