基于LabVIEW的双铣刀数控机床控制系统

为解决单铣刀螺杆铣床在加工塑料行业挤出机螺杆时存在效率低的问题,将采用工业计算机和运动控制卡设计开发开放式数控系统的技术应用于研制高效的双铣刀数控螺杆铣床中.开展了螺杆外形和现有螺杆加工过程的分析,建立了机床在螺杆加工时各个轴之间的关系,提出了采用虚拟仪器软件LabVIEW及其motion模块和NI公司的PCI-7390运动控制卡,设计双铣刀同时加工的专用铣床及其控制系统的方法；在理论上对双铣刀数控机床的可行性和加工效率进行了评价,并进行了两把铣刀同时加工螺杆的实验.研究结果表明,所研制的双铣刀数控机床不仅实现了两把铣刀的同时加工,使加工效率提高了10％以上,加工系统还具有工作界面简单、易懂,容易上岗操作的优点.

Double milling cutters CNC control system based on LabVIEW

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.