Cutting by use of rotating axially moving tool – Tool or tool with support – Having stepped cutting edges
Patent
1987-09-30
1989-07-04
Bovernick, Rodney B.
Cutting by use of rotating axially moving tool
Tool or tool with support
Having stepped cutting edges
407 9, 408227, 408714, B23B 5100, B23D 7700
Patent
active
048446700
ABSTRACT:
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.
REFERENCES:
patent: 3345888 (1967-10-01), Gustkey
patent: 3973861 (1976-08-01), Sussmuth
Bovernick Rodney B.
Ryan J. P.
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