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In order to cope with the high-pressure and high-flow of the hydraulic system for the large-tonnage fine blanking press, a fast cylinder hydraulic system and a phased PID control method were designed. Then, the calculated model was established in AMESim software, and the pressure, speed and displacement of the fast cylinder were simulated. Comparing with the experimental curve on the fine blanking press, the location error of slider is within 0.01 mm, and the time-delay error between the simulation displacement curve and the given displacement curve is 0.02 s. Therefore, the correctness of the model was verified, and the requirement of fine blanking was met. Furthermore, by adjusting the model parameters and comparing the displacement simulation curves, the results show that the design of accumulator can improve the operation speed of the large-tonnage fine blanking press, maintain more stable movement and decrease energy consumption greatly.
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