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[CN 201720734555.8] high precision hydraulic press system device


[CN 201720734555.8] Title of High Precision Hydraulic Press System Device: Application Number of High Precision Hydraulic Press System Device: CN 201720734555.8 Applicant: Jining Luwei Hydraulic Technology Co., Ltd. Application Date: 2017-6-23 Patent Type: Utility Model A high precision hydraulic press system device includes an oil tank, a main oil tank and an oil tank. The inlet ends of the system large flow oil pump and the system small flow oil pump are connected to the oil tank through pipelines, both ends of the variable frequency motor respectively control and connect the system large flow oil pump and the system small flow oil pump. The oil outlets of the system large flow oil pump and the system small flow oil pump are connected to the oil inlet P of the three-position four-way solenoid valve through pipelines, the oil return port T of the three-position four-way solenoid valve is connected to the oil tank, the working port A of the three-position four-way solenoid valve is connected to the rod cavity through pipelines, the utility model adopts imported proportional speed control valve and proportional relief valve, which can accurately control the pressure and flow of the system; the utility model adopts a displacement sensor to control the displacement of the slider to meet the requirements of positioning and fixed range, and its control accuracy ≤ ± 0.03mm, the positioning can be steplessly adjustable in the full stroke.