Cutting tip and rotary cutting tool employing same

摘要

A rotary cutting tool includes a first end defined by a cutting profile and structured to perform cutting operations on a workpiece. The cutting tool also includes an opposite second end structured to be mounted in a machine tool, a central longitudinal axis extending between the first and second ends, and a generally cylindrical body disposed about the central longitudinal axis between the first end and the opposite second end. The cutting profile includes a first portion adjacent the central longitudinal axis and disposed generally at a first angle relative to the central longitudinal axis; a second portion adjacent the first portion and disposed generally at a second angle relative to the central longitudinal axis; and a third portion adjacent the second portion and disposed generally at a third angle relative to the central longitudinal axis. The second angle is greater than both the first and third angles.

主权项

1. A rotary cutting tool for performing hole-cutting operations on a workpiece, the rotary cutting tool comprising:
a first end structured to engage and perform cutting operations on the workpiece, the first end being defined by a cutting profile; an opposite second end structured to be mounted in a machine tool; a central longitudinal axis extending between the first end and the opposite second end; and a generally cylindrical body disposed about the central longitudinal axis between the first end and the opposite second end, the generally cylindrical body having an outer surface, wherein the cutting profile comprises:
a first portion adjacent the central longitudinal axis and disposed generally at a first angle relative to the central longitudinal axis;a second portion adjacent the first portion and disposed generally at a second angle relative to the central longitudinal axis; anda third portion adjacent the second portion and disposed generally at a third angle relative to the central longitudinal, wherein the first portion defines a portion of a convexly shaped tip portion disposed about the central longitudinal axis of the cutting tool, and wherein the second angle is greater than the first angle and the second angle is greater than the third angle.