HOLLiAS - LEC G3 PLC application in fused grinding compound machine tool

HOLLiAS - LEC G3 PLC application in fused grinding compound machine tool newmaker welcome to e hall exhibition hall 3 PLC PLC programmable controller, PLC programming cable. 。 。 Abstract: this paper introduces the integration of hollysys company a new generation of small PLC application in fused grinding compound machine tool. Keywords: fused machine PLC control system, THE APPLICATION OF small integration HOLLiAS - LEC G3 PLC在电熔机控制SYSTEMAbstractThe和利时的新微型PLC在电熔机中的应用控制系统提出了。 Keywords: Electrofusion Machine Micro PLC Control system 1, an overview of the fused grinding compound Machine is specially used for processing non-ferrous metals, as well as other super glue, hard, brittle, high heat sensitive material, special material to solve some of the traditional cars, milling, planing and other processing methods can not meet the requirement of the processing problems, is a new kind of compound multi-purpose grinding Machine. Because in fused edm machine tool, the electric current can reach hundreds, even thousands of amps, strong electromagnetic radiation produced serious interference with the control system. To this end, the anti-interference ability of HOLLiAS - LEC G3 series PLC as the control core of machine tool, and guarantee the normal work of the fused grinding compound machine tool can reach the national standard. In this paper, hollysys company PLC HOLLiAS - small integration LEC G3 series products are used for fused grinding compound machine tool application instance. 2, system composition, system from 1 piece of high performance CPU processor LM3106 24 points ( 14 point switch input and output transistor at 10) , 1 piece of 2 channels of analog output module LM3320, 1 piece LM3210 8 point switch input module, the control system for the fused grinding compound machine tool. Main control unit of the PLC configuration diagram is as follows: integration of small PLC HOLLiAS - hollysys company LEC 3 G3 series products, systems and control principle of the machine tool motion control system is composed of four most: spindle motion control, grinding wheel spindle motion control, head spindle motion control, motion control table. 1, machine tool spindle motion control of machine tool spindle consists of a 5. 5 kw motor drive, the change of the speed by 5. 5 kw inverter control, frequency converter control signal from the analog output module LM3320 first channel. Because in the process of fused edm, plate and workpiece spindle discharge head is in a state of non contact, and the need to maintain the relationship between relative motion ( Line) Speed to guarantee the normal processing, therefore, the spindle speed change with the rotational speed of workpiece head frame adjusted accordingly by PLC system. PLC is based on the speed of rotary encoder measuring feedback current workpiece head frame timely adjust the output of the inverter driving signal frequency value, from the surface to ensure spindle frequency conversion motor can smooth running at the speed of requirements. Control principle is shown in figure 2, grinding wheel spindle motor control wheel spindle simply get the constant speed, control 7. 5 kw ac asynchronous motor. 3, head spindle motor control to guarantee machining accuracy, Φ 32 ∽ Φ 320 mm artifacts need to be at a constant linear speed rotation, so the first frame spindle speed is according to the diameter of the processed workpiece by PLC automatic control system, automatic adjustment by encoder. Control signal is the second channel control of the analog output module LM3320 head frame motor drive inverter to adjust motor speed. The control principle is shown in figure 4, the workbench motion control table of longitudinal motion control ( Y) System requirements fast moving speed Vmax = 4 m/min, dc servo motor driven by hollysys motor company. Pulse encoder chooses 1024 line, with five times the speed frequency multiplier. 5, system implementation and debugging process of machine tool system adopts touch screen operation interface directly with LM3106 RS232 communication port, used in the parameter setting, control of the machining operation and display the running state of machine tool. Part program ladder diagram is as follows: in the aspect of system debugging: because the system is running at the scene of the particularly high factor of safety work, must go through strict testing and debugging. Application of hollysys G3 series small integrated PLC programming software PowerPro characteristic simulation debugging ( As shown in figure) And debug the program system, to ensure the reliability of the application to the device, ensure the safety in production of stable and reliable. 5, the conclusion after a period of debugging and commissioning, by HOLLiAS - LEC G3 series small integration of PLC control system has been successfully applied to the machine tool. Practice has proved that the equipment is fully functional, stable performance, reliable quality, good cost performance. References 1, HOLLiAS - Integration of LEC G3 small 2, HOLLiAS - PLC controller hardware manual LEC G3 from China automation network integration of small PLC software manual
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