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1. WO2000025967 - HARD METAL DRILL BIT FOR USE ON A DRILL

Publication Number WO/2000/025967
Publication Date 11.05.2000
International Application No. PCT/EP1999/008195
International Filing Date 28.10.1999
Chapter 2 Demand Filed 28.04.2000
IPC
B23B 51/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
51Tools for drilling machines
B23B 51/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
51Tools for drilling machines
02Twist drills
CPC
B23B 2226/75
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2226Materials of tools or workpieces not comprising a metal
75Stone, rock or concrete
B23B 2251/04
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2251Details of tools for drilling machines
04Angles, e.g. cutting angles
B23B 2251/14
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2251Details of tools for drilling machines
14Configuration of the cutting part, i.e. the main cutting edges
B23B 2251/50
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2251Details of tools for drilling machines
50Drilling tools comprising cutting inserts
B23B 51/00
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
51Tools for drilling machines
B23B 51/0009
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
51Tools for drilling machines
0009Spade drills
Applicants
  • EISCHEID, Karl [DE]/[DE]
Inventors
  • EISCHEID, Karl
Agents
  • EICHLER, Peter
Priority Data
298 19 388.430.10.1998DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) HARTMETALLSCHNEIDPLATTE FÜR DEN EINSATZ AN EINEM BOHRER
(EN) HARD METAL DRILL BIT FOR USE ON A DRILL
(FR) PLAQUETTE DE COUPE EN METAL DUR DESTINEE ETRE UTILISEE SUR UN FORET
Abstract
(DE)
Die Erfindung betrifft eine Hartmetallschneidplatte für den Einsatz an einem Bohrer, insbesondere an einem Stein- oder Betonbohrer, die eine durch die Drehachse des Bohrers verlaufende Bohrspitze (3), beidseitig abfallende von jeweils einer Hauptspanfläche (4) und einer Hauptfreifläche (5) gebildete Hauptschneiden (6) besitzt, wobei die Hauptfreifläche (5) an der Hauptschneide (6) einen Hauptfreiwinkel (14) mit einer zur Drehachse senkrechten Ebene bildet und mit zunehmendem Abstand von der Bohrspitze (3) abnimmt.
(EN)
The invention relates to a hard metal drill bit for use on a drill, especially on a rock drill or concrete drill, which comprises a drilling tip (3) which extends through the axis of rotation of the drill, and has major cutting edges (6) which slope downward on both sides and which are respectively formed by a major face (4) and a major flank (5). The major flank (5) forms a main clearance angle (14) with a plane, said plane being vertical to the axis of rotation, on the major cutting edge (6). In addition, said major flank diminishes with increased distance from the drilling tip (3).
(FR)
L'invention concerne une plaquette de coupe destinée à être utilisée sur un foret, notamment sur un foret à béton ou à pierre, ladite plaquette présentant une extrémité de perçage (3) s'étendant à travers l'axe de rotation du foret, et des arêtes coupantes principales (6) descendant des deux côtés, formées respectivement par une face de coupe principale (4) et une face de dépouille principale (5). Cette dernière (5) forme au niveau de l'arête coupante (6) un angle de dépouille principal (14) par rapport à un plan perpendiculaire à l'axe de rotation et se rétrécit d'autant plus qu'elle s'éloigne de l'extrémité de perçage (3).
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