电火花线切割加工时工具 (电极丝 )和工件之间的放电电压是对放电加工过程进行实时检测的重要参数。本文在理论分析的基础上 ,采用正交试验设计 ,应用极差分析法和方差分析法定量研究了高速走丝电火花线切割加工中放电间隙电压量的变化特性与加工中峰值电流、工件厚度及切割方向之间的关系。研究的结果为准确检测高速走丝电火花线切割加工状态提供了依据 The discharge voltage between the tool (electrode wire) and workpiece during EDM wire cutting is an important parameter for real-time detection of EDM process. Based on the theoretical analysis, this paper uses the orthogonal experimental design, the method of range analysis and variance analysis to quantitatively study the variation characteristics of the discharge gap voltage and the peak current, the thickness of the workpiece in the high-speed wire electric discharge machining And the relationship between the cutting direction. The results of the study provide the basis for accurately detecting the machining status of high-speed wire-cut EDM