Abstract
As a key component of a hydraulic fineblanking press, a high speed hydraulic system is used to achieve the rapid movement of the slider in the noncutting stage, which is important for improving the processing efficiency. It is important to study the various properties of a high speed hydraulic system as the rapid movement affects the precision of the machine as well as the quality of the stamping parts. In this paper, a high speed hydraulic system model was established, and the static and dynamic characteristics of the key components in the system were simulated and analyzed. The system control logic was designed according to the blanking process, and the changes in the speed, displacement, pressure and flow of the high speed cylinder in the blanking process were analyzed. A strategy using PID feedback control of the system was proposed to improve the blanking precision and provide a reliable basis for the control system design.
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