电火花线切割加工是一种利用一个连续地沿其轴线行进的细金属丝作为工具电极,并在细金属丝与工件间通过以脉冲电流,使工件产生电蚀进行加工的新工艺。本文从电火花线切割加工原理、特点、影响加工精度的因素、提高线切割机床加工精度的途径等方面进行分析,对提高线切割加工的生产效率及质量是极为重要的。 WEDM is a new process that uses a thin metal wire that runs continuously along its axis as a tool electrode and processes the workpiece by galvanic etching with a pulsed current flow between the thin wire and the workpiece. This paper analyzes the principle, characteristics, the factors that affect the machining accuracy and the ways to improve the machining accuracy of the wire EDM. It is very important to improve the production efficiency and quality of wire EDM.