The process is based on the electro-erosion principle. Material is removed from the workpiece by a series of rapidly recurring current discharges between two electrodes, separated by a dielectric liquid and subject to an electric voltage. One of the electrodes is called the tool-electrode, or simply the “tool” or “electrode,” while the other is called the workpiece-electrode, or “workpiece.” The process depends upon the tool and workpiece not making actual contact.
In order to machine high quality micro holes the Posalux EDM machines have a tilting head with deformation by pressure that allows to control the diameter of the hole, resulting in a run-out of the tool electrode. The electrode turns with a decentering, giving two different gaps, one where sparks erode the material and another, bigger one, allowing a better flushing of eroded materials. In combination with CNC driven axis and a high-speed interface to communicate with the micro EDM generator, perfect micro holes are the result.
The use of the latest, integrated SARIX μ-EDM technology allows machining with high quality and efficiency, meeting the needs of mass production scenarios.
Automotive – Spray hole drilling in Diesel and gasoline injection nozzle.
Microdrilling of valve plates.
The integrated advanced electrode guiding system precisely feeds the smallest electrode available on the market, down to 35 μm.