Cutting tool
AssigneeKennametal Inc.
InventorsChristian Strauchmann, Jürgen Schwägerl, Herbert Rudolf Kauper
Life of this patent
Estimating the term…
Abstract
Cutting tool for the rotary machining of workpieces, in particular a twist drill, with a cutting tip which has at least one main cutting edge and at least one free surface, wherein a flank face adjoins the main cutting edge radially to the outside, and wherein a flank angle of the flank face increases in a radially outward direction.
Claims11
A cutting tool for the rotary machining of workpieces, wherein the cutting tool has a direction of rotation during use, the cutting tool comprising:
- a cutting tip which has at least one main cutting edge and at least one free surface,
- wherein a flank face adjoins the main cutting edge radially outward from the main cutting edge,
- wherein the main cutting edge merges into an edge of the flank face and extends to a cutting corner,
- wherein a flank angle of the flank face continuously increases in a radially outward direction to the cutting corner;
- wherein a corner radius extends between an end point of the edge of the flank face and the cutting corner;
- wherein the flank angle increases from the end point of the edge of the flank face to the cutting corner;
- and
- wherein the cutting tool is a twist drill and wherein the workpieces are made of metal.
A cutting tool for the rotary machining of workpieces, wherein the cutting tool has a direction of rotation during use, the cutting tool comprising:
- a cutting tip which has at least one main cutting edge and at least one free surface,
- wherein a flank face adjoins the main cutting edge radially outward from the main cutting edge,
- wherein the main cutting edge merges into an edge of the flank face and extends to a cutting corner,
- wherein a flank angle of the flank face continuously increases in a radially outward direction to the cutting corner;
- wherein the flank angle increases from an end point of the edge of the flank face to the cutting corner;
- wherein the cutting tool is a twist drill and wherein the workpieces are made of metal.
A cutting tool for the rotary machining of workpieces, wherein the cutting tool has a direction of rotation during use, the cutting tool comprising:
- a cutting tip which has at least one main cutting edge and at least one free surface,
- wherein a flank face adjoins the main cutting edge radially outward from the main cutting edge,
- wherein the main cutting edge merges into an edge of the flank face and extends to a cutting corner,
- wherein a flank angle of the flank face continuously increases in a radially outward direction to the cutting corner;
- wherein a convex corner radius extends between an end point of the edge of the flank face and the cutting corner;
- wherein the flank angle increases from the end point of the edge of the flank face to the cutting corner;
- and
- wherein the cutting tool is a twist drill and wherein the workpieces are made of metal.
Dependencies are inferred from the claim text.