JPS57127624A - Electric discharge machining device - Google Patents

Electric discharge machining device

Info

Publication number
JPS57127624A
JPS57127624A JP781181A JP781181A JPS57127624A JP S57127624 A JPS57127624 A JP S57127624A JP 781181 A JP781181 A JP 781181A JP 781181 A JP781181 A JP 781181A JP S57127624 A JPS57127624 A JP S57127624A
Authority
JP
Japan
Prior art keywords
electric discharge
high frequency
current
machining
transition
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
JP781181A
Other languages
Japanese (ja)
Other versions
JPS6246286B2 (en
Inventor
Yoichi Ueishi
Masatoshi Yamaya
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 JP781181A priority Critical patent/JPS57127624A/en
Publication of JPS57127624A publication Critical patent/JPS57127624A/en
Publication of JPS6246286B2 publication Critical patent/JPS6246286B2/ja
Granted 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 obtain desired peak current value in an electric discharge machining even in the case of a finishing process where the electric discharge current pulse width is extremely short by improving the first transition of the electric discharge current with a compensating current and shortening the last transition period. CONSTITUTION:A low impedance circuit 14 for high frequency is provided in parallel to a machining pulse transmission circuits 10 and 11 to improve the first transition and the last transition delay of the electric discharge current wave figure due to the high frequency impedance in the circuits 10 and 11, a coaxial cable (the circuit 14) constituting a low impedance circuit for high frequency consisting of a machining gap 3 to a D.C. power source 4 and a current limiting resistor 6 via a capacitor 15. When a switching element 6 for the control is turned on by a signal from a control part 7 the voltage is applied to the gap 3 to start the electric discharge. Thus, desired peak current value can be obtained even when the discharge pulse width is extremely short.
JP781181A 1981-01-23 1981-01-23 Electric discharge machining device Granted JPS57127624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP781181A JPS57127624A (en) 1981-01-23 1981-01-23 Electric discharge machining device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP781181A JPS57127624A (en) 1981-01-23 1981-01-23 Electric discharge machining device

Publications (2)

Publication Number Publication Date
JPS57127624A true JPS57127624A (en) 1982-08-07
JPS6246286B2 JPS6246286B2 (en) 1987-10-01

Family

ID=11675981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP781181A Granted JPS57127624A (en) 1981-01-23 1981-01-23 Electric discharge machining device

Country Status (1)

Country Link
JP (1) JPS57127624A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61219532A (en) * 1985-03-22 1986-09-29 Amada Co Ltd Energy feeding cable foe electric discharge machine
US4672161A (en) * 1983-07-24 1987-06-09 Inoue-Japax Research Incorporated EDM method and apparatus with trapezoidized short-duration pulses
JPS63312017A (en) * 1987-06-11 1988-12-20 Mitsubishi Electric Corp Power source for electric discharge machining
JPH0457618A (en) * 1990-06-28 1992-02-25 Makino Milling Mach Co Ltd Electric discharge machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672161A (en) * 1983-07-24 1987-06-09 Inoue-Japax Research Incorporated EDM method and apparatus with trapezoidized short-duration pulses
US4767905A (en) * 1983-07-24 1988-08-30 Inoue-Japax Research Incorporated EDM method and apparatus with trapezoidized short-duration pulses
JPS61219532A (en) * 1985-03-22 1986-09-29 Amada Co Ltd Energy feeding cable foe electric discharge machine
JPS63312017A (en) * 1987-06-11 1988-12-20 Mitsubishi Electric Corp Power source for electric discharge machining
JPH0457618A (en) * 1990-06-28 1992-02-25 Makino Milling Mach Co Ltd Electric discharge machine

Also Published As

Publication number Publication date
JPS6246286B2 (en) 1987-10-01

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