Punch press with self-adjusting stripper
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United States of America Patent
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-
Dec 30, 1986
Grant Date -
N/A
app pub date -
Oct 28, 1985
filing date -
Oct 28, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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