Kennametal Inc.
Drill and method for processing a workpiece

Abstract:

A method is provided for processing a workpiece by means of a drill, wherein the drill extends along a longitudinal axis and has a drill tip with a nose angle (S) that is less than 180.degree., wherein the drill has a lateral surface, on which at least one side blade is formed, which is designed for milling by means of a feeding in a transverse direction (Q) to the longitudinal axis (L), wherein the workpiece has a surface (O), through which a drill hole is drilled, in that in a first step a plane surface is milled into the surface (O) and subsequently in a second step the drill hole is drilled from the plane surface outwards, wherein the plane surface is milled by means of the side blade of the drill in that it is fed forward in a transverse direction (Q) to the longitudinal axis (L), wherein the drill hole is drilled by means of the same drill in that it is fed forward in the direction of the longitudinal axis (L). Further, a corresponding drill is provided.