Double milling cutters CNC control system based on LabVIEW

LU Zhi-an， YANG Tie-niu， HUANG Li-hui， WU Hou-ya
（School of Mechanical and Electrical Engineering， Wuyi University， Jiangmen 529020， China）

Abstract： In order to solve the problems of low efficiency when extruder screw of plastic industry is processed by the single milling cutter machine，the open CNC system technology developed by industrial computer and motion control card was applied to develop efficient double milling cutters CNC machine for screw. After the analysis of screw shape and existing screw machining process，the relationship between each axis to screw processing was established. A method was presented to design a special milling machine that two milling cutters are able to work simultaneously and its control system， by using the virtual instrument software LabVIEW with its motion module and the NI company's PCI-7390 motion control card. The feasibility and processing efficiency of double milling cutters CNC were evaluated on the theory，and machine processing of two milling cutters was tested. The results indicate that the developed double milling cutters CNC machine not only realize two milling cutters are able to process simultaneously and improve the processing efficiency by more than 10%，but also have advantages that the interface of the processing system is simple and understandability，easy to operation.
Key words： screw processing； double millings CNC machine； LabVIEW