前言为了监视和控制电火花加工过程,就需要鉴别放电特征并区分出现有效放电和电弧的条件。加工过程中常须要确定加在电极和工件之间的最佳脉冲周期和间隔比。这些参数随工件材料和加工的形状而定。其它要求最佳化的参数是放电间隙大小,电极进给速度以及脉冲电压和电流。这些参数是互相联系制约的。 Foreword In order to monitor and control the EDM process, it is necessary to identify the discharge characteristics and to differentiate the conditions under which an effective discharge and arc occur. During machining, it is often necessary to determine the optimum pulse period and spacing between the electrodes and the workpiece. These parameters depend on the material of the workpiece and the shape of the process. Other parameters that are required to optimize are the discharge gap size, electrode feed speed, and pulse voltage and current. These parameters are linked to each other.