US 10,076,793 B2 · Drilling tool and method for producing drill holes

Abstract

A drilling tool for producing drill holes includes a tip and a shaft arranged opposite the tip in a direction of a longitudinal axis of the drilling tool. The drilling tool has at least one geometrically defined cutting edge in the tip area, and has an expanded diameter trailing the tip in a longitudinal direction from the tip. The drilling tool has a first area with a first diameter that precedes the expanded diameter, and a second area with a second diameter, larger than the first diameter, that trails the expanded diameter. The drilling tool is distinguished in that the expanded diameter and/or the second area is/are embodied such that chips are produced in the area of the expanded diameter and/or in the second area when a workpiece is machined, chips consistent with those produced when a workpiece is machined with a geometrically undefined cutting edge.

Claims15

Dependent claims

A drilling tool for producing drill holes in a workpiece, the drilling tool comprising:

a tip;
a shaft arranged opposite the tip in a direction of a longitudinal axis of the drilling tool;
a first area preceding an expanded diameter and having a first diameter, the first area including a first cutting portion in the form of a primary cutting edge configured to remove chips from the workpiece;
a second area trailing the first area and having a second diameter, the second diameter being larger than the first diameter, the second area having at least one second cutting portion configured to remove fine material in the form of dust-like particles from the workpiece;
and
at least one groove for collecting the dust-like particles,
wherein the first area further includes a secondary cutting edge.

4 more elements

Dependencies are inferred from the claim text.

Drilling tool and method for producing drill holes

Life of this patent

Drilling tool and method for producing drill holes

Life of this patent

Abstract

Claims15