Electrical discharge machining (EDM), also referred to as spark machining, spark erosion, burning, wire burning or wire erosion, is a manufacturing method by which the desired shape is achieved using electrical discharges.
The EDM process is most widely used by the mold-making tool and die industries, but is becoming a common method of making prototype and low volume production parts, especially in the aerospace, automobile and electronics industries. Bahrs has extensive experience making Wire EDM parts, including extremely hard materials with close tolerances, complex shapes, prototyping, and more.
Advantages of EDM include:
- Complex shapes that would otherwise be difficult to produce with conventional cutting tools.
- Extremely hard material to very close tolerances.
- Very small work pieces where conventional cutting tools may damage the part from excess cutting tool pressure.
- There is no direct contact between tool and work piece. Therefore delicate sections and weak materials can be machined without any distortion.
- A good surface finish can be obtained.
- Low volume parts