Tonnage monitor for a mechanically driven press
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United States of America Patent
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N/A
Issued Date -
Nov 25, 2004
app pub date -
May 23, 2003
filing date -
May 23, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The upper platen of a press is driven by a ballscrew that is rotated by an electric motor. The ballscrew is suspended from the crown of the press, and the force on the ballscrew shaft when the upper platen is driven into the workpiece causes the crown to flex upward. The flexure of the crown is sensed by a position transducer mounted on a cantilever support. The position transducer generates a signal that can be used to determine the tonnage force developed by the press.
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