Wire EDM Machining Services

PY-precision specializes in precision wire electrical discharge machining, serving customers who require complex, high-tolerance parts. 

Our expertise in wire EDM enables us to efficiently machine delicate geometries, holes, and finishes in hard or exotic alloys that are difficult with conventional methods. 

With over 15 years focused on advancing wire EDM, we routinely hold extremely tight tolerances down to +/-0.001″. 

PY-precision  leverages the latest wire EDM technology to deliver quality small-scale prototypes or high-volume production runs tailored to your application’s material and tolerance needs.

Wire EDM (Wire EDM Cutting)

Wire EDM operates using a continuously fed, thin wire electrode that slices through hardened metals to craft contours or cavities. The process is largely computer-controlled, ensuring precision and accuracy in intricate shapes. 

The wire, commonly made of brass or stratified copper, discharges electrical sparks to the workpiece, eroding the unwanted material. The dielectric fluid, typically deionized water, cools and flushes away debris during the process. 

Due to its ability to produce fine detailed cuts with tight tolerances, it’s especially popular for manufacturing dies, punches, and tools, as well as for parts requiring complex shapes or delicate geometries without inducing mechanical stresses.

Sink EDM (Ram/Die Sinker EDM)

Sink EDM, often used for mold-making or tool and die industries, involves an electrode which is carefully machined to mirror the desired shape on the workpiece. This electrode, often made of graphite or copper, descends into the workpiece, discharging electrical sparks across the gap.

Both the electrode and the workpiece are submerged in dielectric fluid, usually oil or deionized water, which helps control the sparking process. Material is eroded from the workpiece to form the desired shape.

Advanced control systems maintain consistent sparking and provide excellent surface finishes, making it ideal for producing complex cavities, sharp corners, and detailed geometries.

Hole-Drilling EDM

Hole-Drilling EDM is engineered to create deep, precise, and small-diameter holes. The process employs a tubular electrode that rotates and discharges electrical sparks to the workpiece.

High-pressure dielectric fluid, typically oil, is injected through the electrode to flush out eroded material, ensuring clean and accurate hole production. The depth-to-diameter ratio can be quite high, allowing for extremely deep holes relative to their diameter.

This technique is invaluable for producing starter holes for Wire EDM operations or crafting cooling holes in components like gas turbine blades in aerospace applications. The precision and repeatability of this process are commendable, especially for challenging materials and critical applications.