Press machine
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United States of America Patent
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-
Mar 6, 2007
Grant Date -
Jun 26, 2003
app pub date -
Dec 20, 2002
filing date -
Dec 21, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A press machine uses a crank mechanism which can perform pressing by a pressing force control when a slide exists in a pressing region. When the slide is determined to exist between an initial position and a switching position to the pressing region, the slide is moved down by rotating a motor regularly by a position control system. When the slide is determined to exist in the pressing region, pressing is performed by moving down the slide such that a slide pressing force becomes equal to a set slide pressing force by a pressing force control system.
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