ESI, offers EDM hole drilling services to meet the needs of any application or industry. Using state-of-the-art, CNC-operated EDM machinery, we can provide hole drilling as small as 0.005” in diameter as part of your product’s design or as pilot holes for wire EDM processing. This fast, effective process can be used to drill blind- or through-holes in any electrically conductive or heat-treated material.
What is EDM Hole Drilling?
EDM (electrical discharge machining) hole drilling works on the same principle as wire EDM processing. Instead of wire, EDM hole drilling uses an electrically-charged metallic electrode tool that works much like a traditional drill bit for hole machining. The material to be worked forms a second electrode, and electrical discharge between the workpiece and the tool creates sparks that rapidly cut away material. Both the electrode tool and the workpiece are submerged in deionized water, which flushes away cutting debris.
There is no physical contact between the tool and the workpiece, and therefore no cutting forces are involved. This enables extreme dimensional accuracy and results in drilled holes with fine finishes that require no additional work to remove burrs or smooth the surface.