Turning – Process of turning
Patent
1979-01-29
1980-09-09
Hinson, Harrison L.
Turning
Process of turning
414 17, B23B 1300, B23B 2700
Patent
active
042211417
ABSTRACT:
Stock feeding method and means are disclosed for feeding bar stock to an automatic machine tool and in particular a computer numeric controlled machine tool. A collet chuck attached to the hollow machine spindle includes jaws for gripping stock and jaw actuating means to operate the jaws between closed and open conditions. Stock is loaded into an elongated feed and actuating tube mounted for both axial, and rotational movement at the same rate as the machine spindle. The forward end of the feed tube is adapted for operation of the jaw actuating means upon axial movement. A chuck actuator is located to the rear of the machine spindle for rotatable support of the feed tube extending therethrough, and for axial movement of the tube for chuck operation. A stationary protective and support tube coaxially surrounds the rearwardly extending portion of the feed tube. The feed tube functions as a cylinder within which a short piston is mounted and is axially movable against the rear end of bar stock by fluid pressure supplied to the rear of the feed tube. After cut-off of an item from the bar stock, the cut-off tool, or other stop member, is positioned at the forward end of bar stock. The chuck jaws are opened to release the bar stock, and the stop member, under automatic machine control, is advanced. A programmed length of bar stock is fed through the chuck and the machine tool is programmed to reclose the chuck jaws to regrip the bar stock in preparation for machining another part.
REFERENCES:
patent: 2327916 (1943-08-01), Mariotte
patent: 3070238 (1962-12-01), Holdridge
patent: 3266348 (1966-08-01), Mancia
patent: 3691879 (1972-08-01), Blake
patent: 3703112 (1972-11-01), Selby
patent: 4034632 (1977-07-01), Lohner
patent: 4048879 (1977-09-01), Cox
patent: 4061061 (1977-12-01), Lahm et al.
Beckman Victor R.
Hinson Harrison L.
Magnum Tooling Systems, Inc.
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