| The plate bending machine is a molding equipment which can bend plate into column, cone, arc and so on, has been widely used in boiler, chemical, air, rail transport and architecture industries. At present, the various plate bending machines have some common shortcomings of low efficient and low precision. Therefore, this topic with a view to design a new plate bending machine, which has the function of prebending and bending of high efficient and high precision.The paper proposes a new project, which design to improve and optimize the performance of the new plate bending machine from the kinematic structure, hydraulic transmission and control system:First of all, reforming the kinematic structure of the plate bending machine, combine the hydraulic machine and plate bending machine, make use of stamping forming principle for the remaining straight edge of plate for fast and accurate prebending. The method of geometry was used to get the mathematical modeling of the operative rolls on prebending and bending process, and deduce the displacement of the operative rolls. Then get the precisely control of the actuators through communication.Secondly, reforming the hydraulic system of the plate bending machine, especially for the problem of rolls'synchronization, tilting device's pressure and hydraulic motor's braking from the original hydraulic, and design the particular hydraulic loop to resolve them. And the result is get the synchronization of hydraulic cylinder, safe operation of tilting device and steady commutation of hydraulic motor.Finally, reforming the control system of the plate bending machine, the paper proposes a kind of PC + PLC master-slave type control system. The control and interface of supervisory computer's development based on vc++, the next place machine use SIEMENS S7-200PLC for operation control. The modularizing is adopted in design for control program, to divide the system to several modules, and then design the movement of each child module. |
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