Low Noise Control of Servo Press

To achieve higher accuracy and lower the noise in punching, AC servo motor was employed in press. The slider-crank mechanism is widely used as the core of the mechanical press. Dynamic model of the slider-crank mechanism was established through Lagrange equation and computed-torque control technology was chosen to regulate the motion of the mechanism in punching process. Simulation results revealed correctness of the theoretical analysis. Experiments performed on the press-hold punching curve showed the effectiveness of the computed-torque control theory in servo press and the noise reduction potential of it.