Cutting – Processes – With subsequent handling
Patent
1985-10-28
1986-12-30
Meister, James M.
Cutting
Processes
With subsequent handling
83129, 83137, 83390, 83639, B26F 102
Patent
active
046319964
ABSTRACT:
A punch press having a self-adjusting stripper member is disclosed whereby stripping of the press punching tool from a workpiece is automatically effected attendant to effecting a return stroke of the press actuator. The construction includes a press frame upon which is mounted a double-acting fluid actuator, with the actuator being mounted for limited relative movement with respect to the frame. A piston rod of the actuator carries a punching tool for effecting punching of a workpiece. Notably, a stripper member is operatively connected to the housing of the actuator for movement therewith with respect to the press frame, with the stripper normally positioned to provide a large running clearance relative to the workpiece. During reverse pressurization of the press actuator for the return stroke of the punching tool, the actuator cylinder and stripper first move toward the workpiece and the stripper firmly clamps the workpiece against the press frame, with continued pressurization effecting stripping of the punching tool from the workpiece.
REFERENCES:
patent: 1784397 (1930-12-01), Tewes
patent: 2267517 (1941-12-01), Barney
patent: 2353488 (1944-07-01), Mueller
patent: 2585852 (1952-02-01), Sandberg
patent: 2914981 (1959-12-01), Roeber
patent: 3720125 (1973-03-01), Scott
patent: 3722337 (1973-03-01), Brolund
Meister James M.
Peddinghaus Corporation
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