Dynamic Performance Analysis and Control System Design of All-Electric Servo Bending Machine Based on Torsion Shaft Mechanism

Aiming at the problems of oil pollution, high maintenance cost and low production efficiency of traditional hydraulic bending machine, a new type of all-electric servo bending machine based on torsional shaft mechanism is proposed and designed. First, the geometric model of torsional shaft driving mechanism is established, the kinematic equation is written by complex vector method, and the motion characteristic curves of rod and slider are obtained by MATLAB solution and simulation. Then, SolidWorks software is used to establish the 3D model of the bending machine, and the motion analysis module is used for dynamic simulation to obtain the torque change diagram of the motor. By comparing with the traditional all-electric servo bending machine, it is shown that the self-designed bending machine has good performance. Finally, according to the fast and efficient process characteristics of the all-electric servo bending machine, the control system based on Beckhoff TwinCAT3 is designed, including the hardware composition of the system, the motion control function block of the servo motor and the HMI. The practice has proved that the bending machine works smoothly and has high efficiency. Compared with the traditional all-electric servo bending machine, the bending force can be increased by about 3 times. The control system has the advantages of simple structure, convenient installation and debugging, stable and reliable operation.