Cutting – Tool engages work during dwell of intermittent workfeed – Work-feed element contacts and moves with work
Patent
1974-06-05
1976-09-14
Yost, Frank T.
Cutting
Tool engages work during dwell of intermittent workfeed
Work-feed element contacts and moves with work
83412, 83424, 83522, 214 1F, B26D 706
Patent
active
039799832
ABSTRACT:
An ironworker is provided with a powered set of opposed workpiece clamps for accurately locating a workpiece beneath a punch or the like. The preferred form employs a rotary powered, numerically controlled means for moving the clamps.
A unique timing-belt drive is provided for moving long workpieces, such as elongated channels or the like, from a rotary powered input.
A workpiece clamp is provided with a stationary first workpiece-engaging member and a movable second workpiece-engaging member which is slidable along its longitudinal axis from an extended position where it is closely spaced and aligned above the first workpiece-engaging member to a retracted position where it is moved upwardly away from the first workpiece-engaging member and slid longitudinally rearwardly of the first workpiece-engaging member for lifting or placing a workpiece in position for clamping.
REFERENCES:
patent: 831765 (1906-09-01), Beyer
patent: 2359140 (1944-09-01), Meitner
patent: 2425994 (1947-08-01), Chilton
patent: 3194100 (1965-07-01), Fehlberg
patent: 3207019 (1965-09-01), Vauzo et al.
patent: 3231099 (1966-01-01), Kidd
patent: 3349658 (1967-10-01), Johns et al.
patent: 3535946 (1970-10-01), Miller
patent: 3580767 (1971-05-01), Barnes et al.
patent: 3621727 (1971-11-01), Cicognani
patent: 3691887 (1972-09-01), Roch
U.S. Amada Ltd.
Yost Frank T.
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