Wire electrical discharge machining is used to produce precision parts for any application. A variety of markets such as aerospace, medical, defense, automotive and electric/semiconductor manufacturing require wire EDM to achieve high accuracy and tighter tolerances
Wire EDMS can be used to produce and repeat the required specifications with ease. EDM is a non-traditional method of removing material by a series of rapidly recurring electric arcing discharges between an electrode (the cutting tool) and the work piece, in the presence of an energetic electric field. The machines electrical energized thin brass wire can slice through any electrically conductive material, including difficult-to-machine metals. Wire EDM machines use rapid, controlled, repetitive spark discharges to create intricate profiles.
Electrical Discharge Machining only works with materials that are electrically conductive and generally those materials are ferrous alloys. The wire-cut process uses water as its dielectric with the water’s resistivity and other electrical properties carefully controlled by filters and deionizer units. The water also serves the critical purpose of flushing the cut debris away from the cutting zone. Machine surfaces are smooth with a matte appearance, and the edges of the finished work piece have virtually no burrs. Surface finishes are typically between 16 and 64 micro inches, but can be as fine as 10 micro inches. The latest model used for orders is the Fanuc Robocut a-1ic.
Just a few of the benefits include:
- Parts are produced more economically than conventional machining.
- The need for grinding or other finishing procedures is eliminated.
- Wire EDM is an economical replacement for “form grinding.”
- The parts can be “stacked” to machine multiple parts at once.
- The machines have complex geometry capabilities.
- Finished products have burr-free edges.
- Hardened materials can be cut with ease.