| With the emergence of modern engineering facilities and equipment,the traditional power cables as the transmission wire can not meet the requirements in high-current transmission system,and the busway has been widely used increasingly. In cooperation with the busway manufacturer, based on the project of busway protecting shell punching line(side plate production line),the control system for CNC punch press of busway side plate has been completed. Main tasks are as follows:1. Control system hardware design. According to the functional requirements of CNC punch press, logical action control of machine tool was achieved with Mitsubishi FX2N Series PLC (Programmable Logic Controller);The workpiece feed motion control was achieved with DMC5400 motion control card,and the appropriate AC servo motor and its drive were selected to meet the machine tool movement accuracy.2. Control system program development. The Mitsubishi PLC program was created by GX Developer to control the input and output signals,including proximity switch signals,solenoid valve signals of the pneumatic and hydraulic systems,and to meet the machine logical control requirements. According to machining dimension and layout of work station,machining dimension, the workpiece positioning movement was completed by API functions of motion control card and ActiveX control.3. Host machine human-machine interface design. The operation interface of CNC punch press was established by Kingview 6.51,and the dynamic picture of machine tool operation was created according to input and output signals of PLC and motion control card.Processing data was record to establish work report form, and the event-alarm monitoring interface was established according to the site signals.4. On-site commissioning and Sample processing. Sample pieces were processed after on-site commissioning of the hardware and software working conditions,and the workpieces have met the required precision.
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