Metal deforming – With use of control means energized in response to activator... – Sensing tool or tool-linked part
Reexamination Certificate
2005-04-05
2005-04-05
Jones, David (Department: 3725)
Metal deforming
With use of control means energized in response to activator...
Sensing tool or tool-linked part
C072S051000, C072S443000, C072S453010
Reexamination Certificate
active
06874343
ABSTRACT:
A controller for a press brake controls a servomotor to reverse the rotation of a bidirectional piston pump so as to reverse the vertical movement of a hydraulic cylinder and a ram. A command generator maintains a constant speed for a predetermined warmup time or distance after the ram movement is reversed, and afterwards changes the ram speed to a predetermined speed. A ram position, set according to a moving speed pattern, is compared to the actual position of the ram to conform the ram to the moving speed pattern. The moving speed may be limited based on at least one of a pressure and a detected by a pressure sensor.
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English Language Abstract of JP 8-168897.
English Language Abstract of JP 10-281477.
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English Language Abstract of JP 08-164500.
AMADA Company, Limited
Greenblum & Bernstein P.L.C.
Jones David
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