Metal cutting drill with insert having radially overlapping cutt

Details Metal cutting drill with insert having radially overlapping cutt Metal cutting drill with insert having radially overlapping cutt

1998-07-15

2000-02-01

Pitts, Andrea L.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having stepped cutting edges

403199, B23B 5100

Patent

active

060195533

ABSTRACT:
A metal cutting drill includes a steel drill body, and a carbide insert brazed therein. The drill body includes a front face having a recess formed therein, the recess radially overlapping a longitudinal axis of the drill body. The insert is brazed in the recess and includes a plurality of spaced-apart cutting edges disposed on opposite sides of the axis. The cutting edges radially overlap during a drilling operation. One of the cutting edges projects radially outwardly beyond a side face of the head, and another of the cutting edges terminates radially inwardly of the side face.

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