Electrical discharge machining level detector

Details Electrical discharge machining level detector Electrical discharge machining level detector

1995-08-03

1998-05-12

Nguyen, Vinh P.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

219 6913, 318603, B23H 102, B23H 716

Patent

active

057511551

ABSTRACT:
An electrical discharge state detecting device for an electrical discharge machining machine which detects an electrical discharge state during an electrical discharge machining operation. The detecting device includes a high-pass filter for detecting a high-frequency component superimposed on an electrical discharge voltage or an electrical discharge current at a machining clearance between an electrode and a workpiece, a rectifying circuit for outputting a rectified component of the high-frequency component, a first integration circuit for integrating the rectified component, a reference voltage circuit, a second integrating circuit for integrating the reference voltage, a comparator for comparing the two integrated values, an electrical discharge generation detecting circuit for controlling starting and ending of the integrating circuits, a logic circuit, and a delay circuit and reset circuits.

REFERENCES:
patent: 4004123 (1977-01-01), Inoue

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