JPS5771725A - Electrical discharge machine - Google Patents

Electrical discharge machine

Info

Publication number
JPS5771725A
JPS5771725A JP14385780A JP14385780A JPS5771725A JP S5771725 A JPS5771725 A JP S5771725A JP 14385780 A JP14385780 A JP 14385780A JP 14385780 A JP14385780 A JP 14385780A JP S5771725 A JPS5771725 A JP S5771725A
Authority
JP
Japan
Prior art keywords
voltage
electrical discharge
exceeds
output
switching element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14385780A
Other languages
Japanese (ja)
Other versions
JPS603931B2 (en
Inventor
Shunzo Izumiya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fanuc Corp
Original Assignee
Fanuc Corp
Fujitsu Fanuc Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fanuc Corp, Fujitsu Fanuc Ltd filed Critical Fanuc Corp
Priority to JP14385780A priority Critical patent/JPS603931B2/en
Publication of JPS5771725A publication Critical patent/JPS5771725A/en
Publication of JPS603931B2 publication Critical patent/JPS603931B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
    • B23H1/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges
    • B23H1/022—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges for shaping the discharge pulse train
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H2300/00—Power source circuits or energization
    • B23H2300/20—Relaxation circuit power supplies for supplying the machining current, e.g. capacitor or inductance energy storage circuits

Abstract

PURPOSE:To prevent electrical discharge from centalizing, an electrical discharge machined surface from roughening and a wire electrode from breaking by a method wherein when the gap voltage of electrical discharge machining exceeds a desired level a switching element can be placed automatically into an OFF state. CONSTITUTION:When a machining gap voltage VG rises, a voltage VA also given to one input terminal of a voltage comparator COM rises. And when the voltage VA exceeds the standard voltage Vref, the comparator COM takes an output ''1'', the pulse generator PUL also takes an output ''1'' in that time, a gate circuit GAT does not give pulse signals from an oscillator OSC2 to a switching element Q2 to turn the element Q2 OFF automatically.
JP14385780A 1980-10-15 1980-10-15 Electric discharge machining equipment Expired JPS603931B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14385780A JPS603931B2 (en) 1980-10-15 1980-10-15 Electric discharge machining equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14385780A JPS603931B2 (en) 1980-10-15 1980-10-15 Electric discharge machining equipment

Publications (2)

Publication Number Publication Date
JPS5771725A true JPS5771725A (en) 1982-05-04
JPS603931B2 JPS603931B2 (en) 1985-01-31

Family

ID=15348576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14385780A Expired JPS603931B2 (en) 1980-10-15 1980-10-15 Electric discharge machining equipment

Country Status (1)

Country Link
JP (1) JPS603931B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4673789A (en) * 1982-05-25 1987-06-16 Mitsubishi Denki Kabushiki Kaisha Power source for wire cut electrical discharge machining
US4689462A (en) * 1984-03-05 1987-08-25 Brother Kogyo Kabushiki Kaisha Wire cutting type electrical discharge machining system
US4731514A (en) * 1985-09-27 1988-03-15 Mohri Naotake Method for predicting breaking of wire electrode in wire electrode type electric discharge machining operation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4673789A (en) * 1982-05-25 1987-06-16 Mitsubishi Denki Kabushiki Kaisha Power source for wire cut electrical discharge machining
US4689462A (en) * 1984-03-05 1987-08-25 Brother Kogyo Kabushiki Kaisha Wire cutting type electrical discharge machining system
US4731514A (en) * 1985-09-27 1988-03-15 Mohri Naotake Method for predicting breaking of wire electrode in wire electrode type electric discharge machining operation

Also Published As

Publication number Publication date
JPS603931B2 (en) 1985-01-31

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