Title:
ELECTRIC DISCHARGE MACHINING CONTROL DEVICE
Document Type and Number:
Japanese Patent JPH08108320
Kind Code:
A
Abstract:
PURPOSE: To operate the gap control for feeding back the mean voltage more accurately by utilizing the discharge voltage having square waveform, and obtaining the mean voltage proportioned to the discharge delay time.
CONSTITUTION: A pulse detecting circuit 6 detects the generation of discharge. A charging capacitor 5 is charged by a constant current source 1. A switch 4 discharges the charged electric charge of the charging capacitor 5 on the basis of the signal from the pulse detecting circuit 6. A filter circuit 3 smoothes the voltage of both terminals of the charging capacitor 5 and utilizes it as the feedback signal of the gap control.
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Inventors:
KITAGAWA KOJI
Application Number:
JP27016294A
Publication Date:
April 30, 1996
Filing Date:
October 11, 1994
Export Citation:
Assignee:
OKUMA MACHINERY WORKS LTD
International Classes:
B23H1/02; (IPC1-7): B23H1/02
Attorney, Agent or Firm:
Azusa Yuzo