Title (en)

DRILL, METHOD FOR PRODUCING A DRILL, METHOD FOR MAKING A THROUGH-HOLE IN A WORKPIECE, AND USE OF A DRILL

Title (de)

BOHRER, VERFAHREN ZUR HERSTELLUNG EINES BOHRERS, VERFAHREN ZUM EINBRINGEN EINER DURCHGANGSBOHRUNG IN EIN WERKSTÜCK, UND VERWENDUNG EINES BOHRERS

Title (fr)

FORET, PROCÉDÉ DE FABRICATION D'UN FORET, PROCÉDÉ DE RÉALISATION D'UN ALÉSAGE TRAVERSANT DANS UNE PIÈCE, ET UTILISATION D'UN FORET

Publication

EP 3003618 A1 20160413 (DE)

Application

EP 14724442 A 20140515

Priority

• DE 102013210112 A 20130529
• EP 2014059959 W 20140515

Abstract (en)

[origin: WO2014191216A1] The invention relates to a drill (1) particularly for working lightweight metals and composite materials, having a central axis (M) and an end face (3). The drill (1) comprises a first section (5) which – seen along the central axis (M) from the end face (3) – is arranged before a second section (7). Said first section (5) comprises a first main cutting edge (9, 9') and a first external diameter (D1), said second section (7) comprising a second main cutting edge (11) and a second external diameter (D2). Said first external diameter (D1) is smaller than said second external diameter (D2). According to the invention, the first external diameter (D1) is at least 0.9*x to a maximum of 1.1*x, where x = D2 – exp(D2/15) – 0.5.

IPC 8 full level

B23B 47/34 (2006.01); B23B 51/00 (2006.01)

CPC (source: EP)

B23B 47/34 (2013.01); B23B 51/009 (2013.01); B23B 2222/04 (2013.01); B23B 2222/88 (2013.01); B23B 2226/275 (2013.01); B23B 2251/606 (2013.01)

Citation (search report)

See references of WO 2014191216A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

DE 102013210112 A1 20141204; EP 3003618 A1 20160413; WO 2014191216 A1 20141204

DOCDB simple family (application)

DE 102013210112 A 20130529; EP 14724442 A 20140515; EP 2014059959 W 20140515