What is the role of an electrode in an EDM machine?

In an EDM (Electrical Discharge Machining) machine, the electrode plays a crucial role in conveying electric current. The process relies on the principle of electrical discharges between the electrode and the workpiece submerged in dielectric fluid. When a voltage is applied, the electrode generates a series of sparks that erode the material from the workpiece, allowing for precise shaping and machining of hard materials. The material from the electrode itself can also erode, which is taken into account when designing the machining process.

The significance of the electrode in facilitating the flow of electric current is fundamental to the EDM process, as this action directly contributes to the material removal mechanism. The choice of electrode material can affect the efficiency and quality of the machining operation, highlighting the importance of its role.