| 主权项 |
1. A rotary cutting tool comprising:
a cutting tip comprising:
a cutting portion adapted to perform cutting operations on a workpiece, anda threaded aperture defined therein generally opposite the cutting portion; a generally cylindrical tool body disposed about a central longitudinal axis, the tool body having a first end portion adapted to be coupled to a machine tool and an opposite second end portion including an aperture; and a coupling mechanism comprising:
a coupling member disposed in, and rotatable with respect to, the aperture of the tool body, the coupling member comprising:
a first threaded portion cooperatively engaged to the threaded aperture of the cutting tip,a second threaded portion disposed opposite the first threaded portion, the second threaded portion being opposite-handed with respect to the first threaded portion, anda splined portion disposed between the first threaded portion and the second threaded portion; anda geared nut having a splined portion and a toothed portion, wherein the geared nut is disposed about the coupling member such that the splined portion of the geared nut cooperatively engages the splined portion of the coupling member in a manner such that the splined portion of the coupling member is moveable axially with respect to the geared nut, and wherein the first threaded portion is moveable with respect to the tool body in a manner that selectively couples the cutting tip to the tool body. |
