Reamer core drill with cutting bits

Cutting by use of rotating axially moving tool – Tool-support with means to move tool relative to tool-support – To move radially

Patent

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Details

408 59, 408147, 408161, 408168, 408229, 408233, 408713, 408714, B23B 5100, B23B 5106

Patent

active

046066802

ABSTRACT:
A device for boring holes has a geometrical longitudinal axis, a clamping zone, a shank having a front end zone, two turnover plates fastened on the front end zone of the shank in opposite positions, and a chip space in front of each turnover plate. In the shank, a longitudinal slot runs radially to the geometrical longitudinal axis, which is open towards the front end zone and has a bottom that extends so far towards the clamping zone that the shank halves thus formed can be bent forward at the front end zone to a degree that is sufficient for fine setting the bore diameter. Beyond the bottom of the longitudinal slot, a tapped hole in the shank is coaxial with the longitudinal axis. A coaxial rest hole in the shank in the inner zone of the longitudinal slot is intersected by the longiudinal slot. A tapered hole is at the outer end of the rest hole, which is complementary to the circumferential surface of a conical screw head, into which tapered hole the head can be screwed for widening the bore diameter, along with the expanding of the longitudinal slot. Transversely to the longitudinal slot and passing through the slot, second and third screws respectively on each side of the geometrical longitudinal axis, allow the longitudinal slot to be narrowed when the screws are tightened.

REFERENCES:
patent: 270216 (1883-01-01), French
patent: 275815 (1883-04-01), French
patent: 280368 (1883-07-01), French
patent: 2279085 (1942-04-01), Winter
patent: 3711216 (1973-01-01), Zurcher
patent: 3785746 (1974-01-01), Wolf et al.
patent: 4050840 (1977-09-01), Skingle
patent: 4428704 (1984-01-01), Kalokhe

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