Patent ID: 9555492
Date: 2017-01-31
CPC Classifications: B23B,B23D

Claim:
1. A boring tool, comprising: a clamping shank; and a boring body, said boring body having at least one main blade which extends between an end face of the boring body and the clamping shank along a longitudinal axis of the boring body, said at least one main blade having a blade web, said blade web having a rake face facing toward a groove-shaped chip space of the boring body and a free surface arranged on an outer circumference of the boring body, said rake face and said free surface converging at a cutting edge of the at least one main blade, said cutting edge extending along the longitudinal axis of the boring body, said main blade transitioning at the end face of the boring body into a groove blade having a groove-chip rake face, said groove blade oriented transverse to the longitudinal axis of the boring body, said groove blade being configured to form a groove in an inner wall of a predrilled core bore of a workpiece during a movement of the boring tool into the pre-drilled core bore along a longitudinal axis of the core bore, said groove extending along the longitudinal axis of the core bore, said main blade being configured to engage in said groove and to cause a material removal on the inner wall of the pre-drilled core bore of the work-piece as a result of a rotation of the boring tool, wherein the groove blade has a groove-base cutting edge which at a first blade corner of the main blade converges with the main cutting edge of the main blade, wherein the free surface of the blade web and the groove-chip rake face converge at the groove-base cutting edge, wherein the groove-chip rake face is delimited by the groove-base cutting edge and by a first and a second groove-flank cutting edge of the groove blade, each said first and second groove-flank cutting edge transitioning at the first blade corner and at a second blade corner of the main blade into the groove-base cutting edge.