Movable clamping apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 16, 2002
Grant Date -
N/A
app pub date -
Nov 24, 2000
filing date -
Nov 24, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bolster of a press machine has a T-shaped groove, into which a T-shaped leg of a hydraulic clamp is fitted. The clamp advances and retreats along the T-shaped groove by a pneumatic cylinder. A housing of the clamp has a side surface to which a block is fixed. The block is provided with a hydraulic locking device. When placing the clamp in a waiting condition at a retreated position, a push piston of the locking device is projected downwards from a retracted position. Then the push piston pushes an upper surface of the bolster and the thus resulting reaction force fixes the T-shaped leg to a peripheral wall of the T-shaped groove.
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