基于可编程运动控制器的电火花加工高速抬刀控制系统

High-Speed Jump Motion Control System for Electro-Discharge Machining Based on Programmable Multi-axis Controller

针对电火花加工高速抬刀控制系统的设计要求,设计了基于可编程运动控制器的电火花加工高速抬刀控制系统,并将其应用于DK7140型商用电火花成形加工机床.结果表明,利用所设计的高速抬刀控制系统实现了主轴最高速度达200mm/s、最大加速度约9.68m/s2的稳定高速抬刀运动.进一步通过窄槽加工实验,取得了窄槽加工最大深度与加工效率的成倍提高,并验证了高速抬刀控制系统的控制与加工性能.

The requirements from designing high-speed jump motion control system for EDM （electro-dis charge machining） were suggested in three terms： system capable of achieving high-speed motion control, system with good performance in responding and following the reference signal for axis and a jump motion course with high acceleration. A high speed jump motion control system for EDM based on programmable multi axis controller （PMAC） was studied and designed to meet the requirements suggested. The control system proposed was applied to type DK7140 commercial EDM machine and achieved stable main axis jump motion with maximum speed of 200 mm/s and maximum acceleration approximate to 9.68 m/s2. Through the experiments of processing narrow slots, the control system obtains good results in terms of maximum machined depth and processing efficiency, and validates the good performance in control and machining.