Presses – Automatic or material triggered control – Of actuating means
Patent
1998-10-16
2000-06-06
Gerrity, Stephen F.
Presses
Automatic or material triggered control
Of actuating means
72 213, 72430, 83 621, 83 74, 83627, 100 99, 100280, B30B 142, B30B 1514
Patent
active
060705213
ABSTRACT:
Learning control is adopted in slide control of a press, and the actual behavior pattern of the slide is converged to the optimum pattern thereby breakage of a metal mold or the like can be prevented. The slide control device is provided with a linear motor or a servo motor driving the slide in reciprocation, a position detector detecting position of the slide, and a control circuit fixing and storing previously the command value of the optimum pattern of behavior of the slide, and calculating error between the real position data from the position detector and the fixed command value of the optimum pattern in a prescribed period of time from the drive start of the slide, and correcting the command value to be outputted in order to eliminate the error and outputting the command value after the correction and controlling the linear motor or the servo motor.
REFERENCES:
patent: 4429627 (1984-02-01), Edso
International Publication No. WO96/23653, published Aug. 8. 1996.
Patents abstracts of Japan, vol. 012, No. 455 (M-767), Nov. 22, 1988 and JP 63 178000A, Jul. 22, 1988.
Gerrity Stephen F.
Yamada Dobby Co., Ltd.
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