Detection of Electrode Pressure on Metal Paper for Electroerosion Printers
Original Publication Date: 1984-Feb-01
Included in the Prior Art Database: 2005-Feb-02
The electrode pressure should be sufficient to ensure good electrical contact. Too high a pressure would damage the metal paper 1, whereas too low a pressure would lead to incomplete or missing erosion and thus to a poor print quality. The negative influence of particular parameters (for example, changes in roughness, conductivity and pressure, irregular electrode profiles) is compensated for by an increased electrode pressure, but the magnitude of this pressure must be just adequate. For this purpose, the correct electrode pressure is determined by the printer itself in that each electrode 2 is initially subjected to a low voltage U1 by means of an ignition driver 3. U1 is lower than the voltage required for sustaining the burning or arcing process. For arcing, an arcing driver 4 applies a voltage U2 to the electrode.