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电火花技术应用于深长小孔的磨削加工在我国只有十多年历史。由于它解决了机械磨削所遇到的很多难题,因此发展很快。电火花磨削小孔的基本原理是:电极丝穿过工件内孔,并与内孔侧壁保持一定的间隙,其间充有工作液介质。工件与电极丝之间作相对周向旋转、纵向往复和横向进给运动。当电火花脉冲电源的正、负极分别与工件、电极丝接通后,横向进给运动使二者保持适当的间隙(一般在0.002～0.05毫米之间,这主要决定于脉冲电源的波形)。这样,在工件与电极丝作相对周向旋转,轴向往复运动时就产生连续
EDM technology used in deep hole grinding in our country only 10 years of history. Because it solved many problems encountered in mechanical grinding, so the rapid development. The basic principle of electric spark grinding holes is: electrode wire through the workpiece hole, and the side wall to maintain a certain gap, during which filled with working fluid medium. Relative rotation of the workpiece and the electrode wire between the circumferential, longitudinal reciprocating and infeed movement. When the positive and negative electrodes of the spark pulse power supply are respectively connected with the workpiece and the electrode wire, the transverse feed motion keeps the proper gap between them (usually 0.002 ~ 0.05mm, which mainly depends on the waveform of the pulse power). In this way, the relative rotation of the workpiece and the electrode wire in the circumferential direction, the axial reciprocation to produce continuous