| 摘要 |
A cutter for the deburring of bores comprises a rectangular edged cutter element having taperingly extending cutting edges, having clearance surfaces ground undercut and comprising a convexly ground contact surface on one end of the cutter head for contact with the internal surface of a bore. Two oppositely aligned cutter elements are mounted for displacement in a radial direction in a guide recess of a tool holder, and while in the operative position during the deburring of a bore, the cutting elements are displaced inwards radially because of the tool holder feed and because of the tapered extension of the cutting edges, against a spring force in the guide recess, until they finally reach the inner area of the bore in the non-cutting mode. To prevent damage to completed stages or to the inner surface of a bore during the continuation of the operation, a rake surface with a curvelinear bevel forms a clearance angle behind the cutting edge, which clearance disappears at the end of the operation as the contact surface comes into contact with the inner surface of the bore. |
