Ram EDM Suitable for Small Workpieces
The ZNC EDM 250 from Knuth Machine Tools is an entry-level ram EDM with NC-controlled feed on the Z axis. Its compact design is said to be suitable for machining small workpieces, and the rigid machine base and linear scales in all axes helps to ensure precision. The EDM is said to be low-maintenance and efficient, while its user-friendly design eases programming. The machine is equipped with a flame sensor and fire extinguishing system. Additional options including adjustable electrode holders and magnetic clamping plates are also available.
Originally, wire EDM had two things going against it. It was slow, and often it left an undesirable surface finish. In the last few years, wire EDM builders have fixed the speed problem. Now they're well on their way to fixing the surface finish problem.
Electrical discharge machines, both wire and ram type, have undergone rapid improvements in capability, economical operation, speed and flexibility. New applications are continually emerging as shops discover the advantages of this process.
Beryllium copper offers many benefts to the moldmaker and plastic injection molder, yet questions remain on how to best EDM it, which alloy to specify, where to use it, and is it safe to work with?