Dynamic Performance Analysis And Evaluation On Ingot Overturning Device Of Alulmimum Ingots Stacker Driven By Servo

The Aluminun Ingot Stacker is the key equipment of Aluminum Ingots Continuous Casting production lines. Ingot overturning device is the key parts of Aluminum Ingots Stacker. Based on a set of 22t/h output of Aluminum Ingots Continuous Casting production lines, in the paper, it studies the gear transmission system of Ingot overturning device of Aluminum Ingots Stacker driven by servo in detail, and conducts an analysis not only about static and dynamic performance of the axis, but also about the lateral-torsional coupling vibration of the gear transmission system.Ingot overturning device is driven by cylinder presently, cylinder-driven process caused impact, unstable in the turn of ingot and so on. Firstly, by comparing the cylinder, hydraulic and servo motor drive, this paper choose a better performance—servo motor as a drive of Ingot overturning device. Secondly, we analyze the static and dynamic performance of the axis which is the key parts of Ingot overturning device by using the finite element analysis software ANSYS. Static analysis calculated the static deformation under the maximum torque; Modal analysis achieved the critical speed and natural mode of vibration of the axis; Transient analysis gain displacement, velocity and acceleration response of the main axis driven by dynamic torque which is exported by servo motor. The result shows that the use of servo motor which driven Ingot overturning device to turn ingot, reduced the impact in the two extremes and impoved the stability in the process of turning.The transmission of Ingot overturning device is a typical complex gear rotor system with multi-level, multi-offshoot. Because of the gear meshing effect, the lateral vibration and torsion vibration of system couple each other, so the system should be built and then the vibration of system be analyzed. We established a dynamic modal of the transmission of Ingot overturning device with the use lumped parameter method. Then the vibrations of the only one rotor are built, the vibrations of all rotors are synthesized to the lateral-torsional coupling vibration equtions of complex gear-rotor system after the coupling stiffness matrix and coupling damping matrix are deduced. The natural modes and dynamic response of the gear transimission are acquired through the computer simulation with use of MATLAB. The results indicate that, except the only one rotor modes and coupling modes being similar to an only one rotor, system derive many new modes sensitive to the gear meshing. Besides, the critical speed of the lateral-torsional coupling system is higher than the one of the only one rotor. For the gear meshing, when one rotor is excited, the vibration response occurred ont only on itself but also on many rotors at the same time. The vibration response of coupling system overlaid the vibration response of the only one rotor.The dynamic performance of the gear transimission of Ingot overturning device driven by servo is analysed and estimated. In this sense, it provided the certain theoretic evidence for ameliorating the design manufacture and improving the efficiency of Ingot overturning device.