Presses – Automatic or material triggered control
Patent
1997-05-19
1998-11-03
Gerrity, Stephen F.
Presses
Automatic or material triggered control
100 50, 100256, 100289, B30B 1514, B30B 1526
Patent
active
058293477
ABSTRACT:
An electropressing apparatus has a pressing ram axially movable to apply a pressure to a workpiece to be pressed. The apparatus comprising an electric drive motor, a motor driver for driving the electric drive motor, a drive mechanism including a threaded drive shaft operatively connected to the electric drive motor to be rotated by thereby, a transmission device operatively connected to the threaded drive shaft and to the pressing ram to convert the rotational movement of the threaded drive shaft into the axial movement of the pressing ram, a first control for setting, memorizing and detecting an initial position of the pressing ram relative to the workpiece, a second control for setting, memorizing, detecting and changing a press starting position of the pressing ram relative to the workpiece, a third control for setting, memorizing, detecting and changing a pressure of the pressing ram to be applied to the workpiece and a fourth control for setting, memorizing, detecting and changing a period of time of the pressing ram for pressing the workpiece with a set pressure, wherein the period of time of the pressing ram for pressing the workpiece with a set pressure starts to be counted at a time when a set pressure is detected.
REFERENCES:
patent: 5379688 (1995-01-01), Ishii
patent: 5483874 (1996-01-01), Shimizu et al.
Gerrity Stephen F.
Janome Sewing Machine Co. Ltd.
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