在航空发动机的机械加工中，对深小孔的加工是个难题，一是航空材料的硬度比较高且比较粘，二是孔径小且深，若用常规的钻削方法，不仅钻头的导向、冷却以及排屑很难解决，还容易折断钻头。基于上述原因，采用电火花加工的方法，由电极和工件间脉冲放电产生的高温火花通道，来? In the machining of aeroengines, the processing of deep and small holes is a difficult problem. Firstly, the hardness of aviation materials is relatively high and sticky. Secondly, the aperture is small and deep. If conventional drilling methods are used, not only the orientation and cooling of the drill bit As well as the chip is difficult to solve, but also easy to break the drill. Based on the above reasons, the use of EDM method, the electrode and the workpiece by high-temperature pulsed discharge sparks come?