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[CN 202010430410.5] Control method and control system for hot forming process of high-precision forging hydraulic press
[CN 202010430410.5] A Control Method and Control System for Hot Forming Process of High Precision Forging Hydraulic Press Title: A Control Method and Control System for Hot Forming Process of High Precision Forging Hydraulic Press Application Number: CN 202010430410.5 Applicant: Tianjin Tianforging Aviation Technology Co., Ltd.; Tianjin Tianforging Press Co., Ltd. Application Date: 2020-5-20 Patent Type: Invention Application This invention relates to a control method and control system for hot forming process of high precision forging hydraulic press, it belongs to the technical field of metal thermoforming, and is characterized in that it includes: 1. slider descending rapidly; 2. slider decelerates downward; 3. slider descending slowly; 4. slider approaches the workpiece at a set speed and a constant speed, the control mode of the initial stage of the slider pressing the workpiece remains unchanged, the slider continues to adopt speed closed-loop control, and when the slider pressure reaches a certain proportion of the set pressure, the control mode of the ejection mechanism is switched to pressure closed-loop control, the input signal is the pressure sensor to collect the pressure value, and the actuator is the lower chamber servo valve. By adopting the above technical scheme, the present invention realizes the process forming method of titanium alloy products through the design of the electro-hydraulic control system of the hot extrusion forming hydraulic press, and the control accuracy of the pressure building speed and pressure of the hydraulic press through the PLC programming control of the high-frequency response proportional valve, frequency converter and pump group.
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