Cutters – for shaping – Gear cutting tool – Hob
Patent
1978-02-21
1980-02-12
Hinson, Harrison L.
Cutters, for shaping
Gear cutting tool
Hob
407 51, B26D 112
Patent
active
041881613
ABSTRACT:
A milling cutter comprising a cylindrical body having a bore adapted for receiving a driving shaft in coupled relation and a periphery with uniformly distributed trapezoidal cavities therein with inset cutting blades in the cavities. The cutting blades have base sections of trapezoidal shape corresponding to that of the cavities and the blades are insertable in two different positions, one being an endless screw position in which the periphery of the teeth of the blades are inscribed in a circle concentric with the axis of the body and the other being a spur position in which the tips of the teeth are inscribed in a circle concentric with the axis of the body. The base sections of the blades have surfaces facing respective surfaces of the cavities and respective pairs of the surfaces are formed with longitudinal grooves cooperatively defining common spaces in which axial keys are engaged to lock the respective blades in the cavities radially. Abutments are centrally positioned along the length of the body and affixed thereto for engaging in respective slots in the blades to hold the same axially on the body in both positions thereof.
REFERENCES:
patent: 509145 (1893-11-01), Thompson
patent: 866372 (1907-09-01), Maltby
patent: 2374528 (1945-04-01), Emde et al.
patent: 2407519 (1946-09-01), Slater
patent: 3162928 (1964-12-01), Kruse
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