Turning – Process of turning
Patent
1976-07-22
1977-07-12
Hinson, Harrison L.
Turning
Process of turning
B23B 1300
Patent
active
040346323
ABSTRACT:
A pneumatically operated rod workpiece feed mechanism for rod working turning machines comprises a hollow feed tube which has a closed end and an opposite open end through which the rod workpiece is adapted to be fed. An axially displaceable feed piston is arranged in the feed tube and it is movable by a first fluid pressure supply means for applying and removing pressure to the feed tube in order to shift the feed piston backwardly and forwardly. The feed piston includes a first piston part which comprises a tubular member having a closed end with a fluid pressure opening adjacent the closed end permitting inflow of the fluid pressure into the first part in order to extend the second part which is displaceable in the first part. A cam control is mounted on the feed tube and projects into the path of movement of the feed piston and is displaceable by movement of the feed piston beyond a predetermined point to regulate the first fluid pressure supply means to control the movement of the feed piston. The second fluid pressure supply means is connected to the cam control in order to operate centering rollers which may be moved radially inwardly to engage the workpiece or outwardly to permit entry of the workpiece into the feed tube.
REFERENCES:
patent: 3081522 (1963-03-01), Lakins
patent: 3621740 (1971-11-01), Thomas
patent: 3696696 (1972-10-01), Bechler
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