Method and apparatus for controlling spark erosion process
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United States of America Patent
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Oct 26, 1999
Grant Date -
N/A
app pub date -
Oct 31, 1995
filing date -
Nov 17, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and an apparatus for controlling a spark erosion process between a workpiece and an electrode for instance a microdrilling electrode, so that the erosion process becomes less susceptible to a malfunction, in that at least one process parameter is measured along a first test interval of the section to be eroded, at least one control value is deduced form the measured values, and this control value is used in a subsequent erosion interval of the section to be eroded. The control value is preferably used for controlling a suitable feed rate of the electrode. The susceptibility to malfunctions is further lessened, in that a differentiation is made between mechanical and other short circuits and in that the electrode movement is controlled differently for mechanical short circuits than for other short circuits.
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