JPS56163836A - Setting device for automatic discharge energy - Google Patents

Setting device for automatic discharge energy

Info

Publication number
JPS56163836A
JPS56163836A JP6779780A JP6779780A JPS56163836A JP S56163836 A JPS56163836 A JP S56163836A JP 6779780 A JP6779780 A JP 6779780A JP 6779780 A JP6779780 A JP 6779780A JP S56163836 A JPS56163836 A JP S56163836A
Authority
JP
Japan
Prior art keywords
discharge
duration
current
effective
detected
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.)
Pending
Application number
JP6779780A
Other languages
Japanese (ja)
Inventor
Yasuo Suzuki
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.)
Via Mechanics Ltd
Original Assignee
Hitachi Seiko 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 Hitachi Seiko Ltd filed Critical Hitachi Seiko Ltd
Priority to JP6779780A priority Critical patent/JPS56163836A/en
Publication of JPS56163836A publication Critical patent/JPS56163836A/en
Pending 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

Abstract

PURPOSE:To enable automatic setting of an appropriate discharge energy level in nonconsumptive electrode electrical discharge machining by detecting the discharge duration of effective discharge and comparing two successive discharge durations to regulate the discharge energy level on the basis of the result of the comparison. CONSTITUTION:A pulse generating power source 1 supplies a pulsating current through an electrode 2 and a workpiece 2'. The value of the current is changed in setps in accordance with signals provided by a discharge energy level setting circuit 10. During the discharge between the electrodes, effective discharge duration is detected 4 from the voltage waveform between the electrodes and is stored in a memory 6. Then discharge operation is repeated with a different current to detect 4 the effective discharge duration Te. Thus detected discharge duration Te is compared 9 with the effective discharge duration Tem detected and stored in the memory 6 immediately before the detection of the discharge duration Te to discriminate the level of the actual machining energy, whereby the discharge energy circuit 10 sets the value of the next current. The ratio between the resistances R1 and R2 of a voltage divider is determined according to the current increase ratio of the pulse generating type power source 1.
JP6779780A 1980-05-23 1980-05-23 Setting device for automatic discharge energy Pending JPS56163836A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6779780A JPS56163836A (en) 1980-05-23 1980-05-23 Setting device for automatic discharge energy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6779780A JPS56163836A (en) 1980-05-23 1980-05-23 Setting device for automatic discharge energy

Publications (1)

Publication Number Publication Date
JPS56163836A true JPS56163836A (en) 1981-12-16

Family

ID=13355296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6779780A Pending JPS56163836A (en) 1980-05-23 1980-05-23 Setting device for automatic discharge energy

Country Status (1)

Country Link
JP (1) JPS56163836A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4695696A (en) * 1982-05-28 1987-09-22 Mitsubishi Denki Kabushiki Kaisha Electric discharge machine with control of the machining pulse's current value in accordance with the delay time
US4751363A (en) * 1986-02-28 1988-06-14 Ho Kuang Ta Automatic turn-on fine finish circuit for electrical discharge machining
US5162631A (en) * 1989-05-30 1992-11-10 Brother Kogyo Kabushiki Kaisha Power supply unit for electrical discharge machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4695696A (en) * 1982-05-28 1987-09-22 Mitsubishi Denki Kabushiki Kaisha Electric discharge machine with control of the machining pulse's current value in accordance with the delay time
US4751363A (en) * 1986-02-28 1988-06-14 Ho Kuang Ta Automatic turn-on fine finish circuit for electrical discharge machining
US5162631A (en) * 1989-05-30 1992-11-10 Brother Kogyo Kabushiki Kaisha Power supply unit for electrical discharge machine

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