Gear cutting – milling – or planing – Milling – With cutter holder
Patent
1988-12-05
1990-05-08
Briggs, William
Gear cutting, milling, or planing
Milling
With cutter holder
279 16, 403342, 408239A, B23C 900, F16B 720
Patent
active
049233440
ABSTRACT:
To permit easy coupling and uncoupling of a concrete or rock circular boring or milling tool element (14, 17), two coupling parts (1, 2) are provided, a first coupling part (1) being formed with a recess (7) of non-circular cross-sectional shape, for example of approximate four-leaf clover shape, extending inwardly from an end face (11) of the first part; the second part (2) has a projection (20) of non-circular cross-sectional shape, matching the cross-sectional shape of the recess, and fitting therein, while being axially separable therefrom. The engagement surfaces (a, 22) of the respective first and second parts extend axially of the coupling elements. A retaining nut (3) retains the parts against each other. For centering of the parts, prior to assembly, interengaging matching centering arrangements are provided, for example by a circular ring cut into the first part ahead of the recess, the projections of the second part extending to just about the circumference of the ring to permit fitting the first and second parts together before the projection is angularly aligned with the recess to permit slipping the projection into the recess while having been preliminarily centered with respect thereto.
REFERENCES:
patent: 2767564 (1956-10-01), Green
patent: 2898118 (1959-08-01), Smith
patent: 3162457 (1964-12-01), Jacco
patent: 3364798 (1968-01-01), Girardin
patent: 3736011 (1973-05-01), Ward
patent: 3835666 (1974-09-01), Hoffman
patent: 4655630 (1987-04-01), Rinehart
Briggs William
Hydrostress AG
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