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[CN 201810126712.6] Mechanical deformation compensation control method for forging hydraulic press


[CN 201810126712.6] A Mechanical Deformation Compensation Control Method for Forging Hydraulic Press Title: A Mechanical Deformation Compensation Control Method for Forging Hydraulic Press Application Number: CN 201810126712.6 Applicant: Yanshan University Application Date: 2018-2-8 Patent Type: Invention Application for a Mechanical Deformation Compensation Control Method for Forging Hydraulic Press, which is characterized in that: its work flow 1) First, a signal is input to control the opening degree of the servo valve to make the movable beam of the press go down quickly; 2) After contacting forgings, the machine frame is deformed by central force or eccentric load. 3) The stress and strain gauge pasted on the frame is changed by stress when the frame is deformed, the resistance value of the strain gauge changes, and the measured changed electrical signal is fed back to the system; 4) Compare the feedback signal and calculate with the measurement value of the displacement sensor to obtain the actual size of the workpiece. The specific calculation method is given below; 5) When the first forging is completed, the movable beam returns to the designated position; 6) The system stops or returns to the first step for the second forging. The invention improves the deficiency of the traditional control method, fully considers the influence of the mechanical body of the forging hydraulic machine under the partial load condition, and improves the forging accuracy of the forging.