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EDM Parts, Tool and Die Making and Repair

EDM Parts: EDM (Electrical Discharge Machining), 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.

Bahrs Die and Stamping uses the Sodick VZ500L.  This is a linear motor driven machine featuring a direct-drive, non-contact, vibration-free mechanism that offer unrivaled acceleration and positioning accuracy with no backlash, giving Bahrs Die & Stamping, the ability to wire edm with a sense of security knowing they will not lose any accuracy over the years. The positioning accuracy is monitored by glass scales, the most accurate form of position measurement available.

The VZ500L wire threader, Super Jet Annealing High Speed AWT, is very reliable. The annealing function heats, stretches to a pointed end and cuts the wire ensuring higher success rates threading wire through a hole on a submerged workpiece or a small diameter hole. This time-saving feature allows Bahrs to meet very aggressive deadlines.

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