Hydromechanical closing device, in particular for lateral extrusion
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United States of America Patent
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Jun 13, 2006
Issued Date -
N/A
app pub date -
Apr 30, 2002
filing date -
May 11, 2001
priority date (Note) -
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Abstract
The invention relates to a hydromechanical clamping device having two movable die halves and two punches, a first hydraulic piston, and a second hydraulic piston. The second die half is fixed to the frame and the second punch is arranged on the second hydraulic piston. The first hydraulic cylinder is connected to a third hydraulic cylinder. The latter acts on a fourth hydraulic piston. The first hydraulic cylinder is connected to the third hydraulic cylinder, so that the pressure medium displaced from the first hydraulic cylinder during a feed movement flows into the third hydraulic cylinder and the third hydraulic piston moves the fourth hydraulic piston in the feed direction, so that pressure medium is displaced into the second hydraulic cylinder, and the requisite forming pressure can be applied to the second hydraulic piston and the punches move toward one another.
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