Electrode Discharge Machines (EDM’s) / Sparking Machines

EDM machines are renowned for their ability to machine parts with incredibly tight tolerances (often within microns) and complex geometries. This makes them ideal for industries where precision is critical, such as aerospace, medical devices, and tool and die making.

EDM is a non-contact machining process, meaning that the tool (electrode) does not physically touch the workpiece. Material is removed via electrical discharges (sparks) between the electrode and the workpiece, preventing mechanical stresses, burrs, or distortions.

In Wire EDM, the wire electrode does not undergo significant wear during cutting. Since the wire is constantly replenished as it moves through the machine, this leads to consistent cutting performance and reduced downtime for tool replacement.

In Sinker EDM, the electrode can be custom-made into any shape, allowing for flexibility in the production of complex geometries. Electrodes are typically made of graphite, copper, or brass, depending on the specific requirements of the job.

The EDM process allows for precise control over material removal, enabling fine adjustments and ensuring high repeatability across multiple parts. This controlled erosion of material enables EDM to achieve complex contours and fine finishes without damaging the workpiece.