| 摘要 |
A cutting tool insert for precision radial machining comprises two cutting faces and is adapted to be fitted in the strap of a tool holder. Said insert consists of two opposed identical frustoconical portions having a common circular base forming the median plane of the disk of which the longitudinal median plane is aligned with the axis of rotation of the tool holder and intersects with the center of the common base circle. Each of said portions has a cutting face in the median plane which is disposed symmetrically on either side of said axis; the cutting faces are obtained by cutting the relevant frustoconical portions depthwise along the median plane and bound by an inclined plane. The disk may also be made of two separate, identical portions.
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