Patent ID: 6252191
Filing Date: 2001-06-26
Classification: B23H

Abstract:
Process for the electrical discharge fine-machining of a workpiece with the aid of an electrode, where the electrode and the workpiece are at a fine-machining distance to one another thereby forming a gap and smooth finishing pulses are applied to the workpiece in a controlled process, characterized by the fact thatthat the machining is done intermittently, where the smooth finishing pulses are applied to the gap during a processing time (T) and a measuring source is applied at the gap at least during an interruption time (P), and thatduring the interruption time (P) it is determined during a measurement time (M) with the aid of an electrical measurement if the electrode is in contact with the workpiece,and that a pulse duty factor is obtained from the measurement, and thata control signal is derived from the measurement for controlling the process.