Electrical Discharge Machining (EDM) hole drilling, is a precision manufacturing process used to create holes in conductive materials with accuracy. Here we explore how EDM hole drilling works in precision engineering and its benefits.

This process uses electrical discharges to erode material from the workpiece. As a company equipped with an EDM hole driller, we find it to be an efficient tool. EDM hole driller is primarily utilized for creating start holes for wire EDM operations, allowing us to initiate the cutting process with precision and accuracy. By leveraging this technology, we can ensure that our projects are completed with optimal efficiency making it an essential asset to our overall machining capabilities.

How does EDM Hole drilling work?

The process involves the use of a copper tube which is submerged in a dielectric fluid, usually deionized water or oil. As the electrode is fed toward the material, electrical pulses are emitted, generating localized heat that melts and vaporizes the material at the point of contact, creating a hole. Using our Ocean River 300-CNC machine, we can achieve diameters ranging from 0.4mm to 3mm with our brass tube.

What is EDM hole drilling is commonly used for?

Aerospace Components: For drilling cooling holes in turbine blades, nozzles, or other engine parts where precision and tight tolerances are critical.

Medical Devices: For creating small, intricate holes in implants, surgical instruments, and other medical equipment made from tough materials like titanium.

Tooling and Dies: For drilling holes in molds, dies, or punch tools, often to accommodate cooling or lubrication channels.

Precision Engineering: For any application requiring small, deep, and accurate holes in materials that may be too hard or delicate for conventional drilling methods.

What materials can be drilled using EDM?

EDM hole drilling is typically used for drilling metals and alloys that are electrically conductive. This includes materials like steel, titanium, Inconel, copper, brass, and many others. EDM hole drilling is especially useful for drilling through materials that are difficult to machine using traditional methods for example hardened tool steels and superalloys. These materials are often very strong, and dense, making them challenging to drill with conventional tools.

Why is EDM hole drilling an advantage to our customers?

EDM hole drilling enhances our efficiency, allowing us to meet customer demands. By having our own in-house hole drilling capabilities, we reduce the need for subcontractors, enabling us to complete more work internally and maintain greater control over quality and timelines.