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[CN 201811574996.1] Servo Control System of 500 Ton Four-column Hydraulic Press
[CN 201811574996.1] 500-ton four-column hydraulic press servo control system title: 500-ton four-column hydraulic press servo control system application number: CN 201811574996.1 applicant: Liaoning Zhongwang mechanical equipment manufacturing co., ltd. application date: 2018-12-21 patent type: invention application the present invention relates to a 500-ton four-column hydraulic press servo control system, belonging to the technical field of industrial equipment. The system includes PLC, touch screen, atos servo valve controller, oil cylinder displacement sensor, rodless cavity pressure sensor, actuator, hydraulic station, communication module, plunger oil pump and vane pump. The oil cylinder displacement signal is obtained through the oil cylinder displacement sensor set in the oil cylinder, and the rodless cavity pressure sensor in the oil cylinder detects the pressure of the rodless cavity of the oil cylinder, thus indirectly measuring the pressure of the press; When the pressure of the press does not reach the set value, position control is carried out, the oil cylinder is controlled according to the set position of the system; when the pressure reaches the set value, it is automatically switched to pressure control to control the oil cylinder with the system set pressure; the present invention improves the control accuracy and efficiency of the press, and adds a new pressure position control mode automatic Switching, and the equipment adds one-key automatic pressing, which not only improves the automation level of the equipment, but also reduces the labor intensity of workers.
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