| 摘要 |
An insert retention screw comprises a head with a radius that is a sufficient size to fit within a mounting hole of a cutting insert and seat within a seating plane within the mounting hole that is generally perpendicular to the axis of the insert when the screw is at an angle in a range of about 0-15 degrees. The retention screw is provided for holding a cutting insert in the pocket of a tool body. The pocket is partially defined by a floor and a seating surface. A threaded hole is at an angle that is taken with reference to the pocket floor. The insert has a mounting hole passing therethrough. The retention screw passes through the mounting hole and threads into the threaded hole so as to draw the insert against the seating surface. A method for orienting the insert retention screw at an angle comprises the steps of selecting a tool body and a cutting insert, determining the frictional force between the tool body and cutting insert, and determining an angle for the retention screw, wherein a force component of the retention screw is greater than or equal to the frictional force between the tool body and the cutting insert.
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