Cutters – for shaping – Rotary cutting tool – Including holder having seat for inserted tool
Patent
1980-04-07
1982-07-27
Vlachos, Leonidas
Cutters, for shaping
Rotary cutting tool
Including holder having seat for inserted tool
407 41, 407 49, B26D 112
Patent
active
043414931
ABSTRACT:
A milling cutter includes an array of pockets each having radially extending side walls and a base wall from which radially projects an elongated locating rail. A safety wedge has one surface in engagement with one wall of the pocket and its opposed surface in engagement with one surface of a cutting insert. The latter includes a central hole through which extends a projection extending from the safety wedge. One edge of the cutting insert engages the locating rail, while the opposite surface of the cutting insert is engaged by a wedge surface of a wedge assembly which is connected to the body of the cutting tool, and is selectively operable for shifting of the wedge assembly into wedging engagement with the cutting insert. By this arrangement, the cutting insert is clamped intermediate the safety wedge and the wedge assembly, and the edge of the cutting insert bears against the locating rail. As the milling cutter is rotated, the hard wedge assembly is behind the cutting insert and thus provides protection to the cutter body in the event of a wreck that would destroy the carbide cutting edge of the cutting insert. In addition, the hard safety wedge disposed ahead of the cutting edge protects the body from chip-erosion.
REFERENCES:
patent: 2385750 (1945-09-01), Weddell
patent: 2751663 (1956-06-01), Leuzinger
patent: 3408722 (1968-11-01), Berry
patent: 3953915 (1976-05-01), Fawcett et al.
patent: 4078868 (1978-03-01), Erkfritz
General Electric Company
Vlachos Leonidas
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