Design of PLC on the Control System for Multi-Station
Modular Machine
Abstract: Nowadays , modular machine tool and its automatic lines play a more and more important role in machine manufacturing industry, its technique function and automate level decide the development of the related section to a large extent.Along with the development of science technique, traditional combined machine based on relay-control cannot adapt to the advanced productivity , in that case, the programmable controlling technique ,with its flexiblity, high reliability,good generalization,gradually replaced the relay-control, becoming the main development direction of the contemporary industry control. This paper introduces in detail about the design of PLC on the control system ,analyzes the diagram of main electric circuit and the controlling electric circuit of the system,and determines the type of apparatus,makes out the connecting-line diagram of the PLC.Then the software design descripes the PLC controlling of drilling,expanding and boring respectively from the whole line auto/ half auto, single machine half auto and single machine hand,then completes the function diagram,trapezoid diagram and the instruction form,enumerates the breakdown and the solution method of the machine and controlling system when running.
Key words: modular machine tool; PLC ; program design
