JPS56134130A - Electric discharge machining apparatus - Google Patents

Electric discharge machining apparatus

Info

Publication number
JPS56134130A
JPS56134130A JP3402680A JP3402680A JPS56134130A JP S56134130 A JPS56134130 A JP S56134130A JP 3402680 A JP3402680 A JP 3402680A JP 3402680 A JP3402680 A JP 3402680A JP S56134130 A JPS56134130 A JP S56134130A
Authority
JP
Japan
Prior art keywords
capacitor
inductance coil
electric discharge
discharge machining
transistor
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
JP3402680A
Other languages
Japanese (ja)
Inventor
Yoichi Ueishi
Yoshio Eguchi
Hitoshi Miyahara
Tadashi Matsushima
Masatoshi Yamaya
Atsushi Kato
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 JP3402680A priority Critical patent/JPS56134130A/en
Publication of JPS56134130A publication Critical patent/JPS56134130A/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

PURPOSE:To permit even a DC supply source of low voltage and small capacity to perform electric discharge machining of stable worked surface roughness by jointly using a switching element, an inductance coil and a capacitor. CONSTITUTION:A transistor 8 is turned on/off by a control circuit 13, and while the transistor 8 is conducting, an inductance coil 6 and a capacitor 10 are simultaneously charged with energy. Even after the charging of the capacitor 10 has been completed, a minimum current for generating a high-voltage impulse is flowing through the inductance coil 6 via a by-pass resistor 11. When the transistor 8 is turned off, the high-voltage impulse due to a counter electromotive force generated in the inductance coil 6 breakdowns the insulation at a working gap 3 through a current limiting resistor 9 and a polarity switch 4. Then, electric discharge machining is performed by the given working energy stored in the capacitor 10. Thereby, a stable worked surface can be obtained.
JP3402680A 1980-03-19 1980-03-19 Electric discharge machining apparatus Pending JPS56134130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3402680A JPS56134130A (en) 1980-03-19 1980-03-19 Electric discharge machining apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3402680A JPS56134130A (en) 1980-03-19 1980-03-19 Electric discharge machining apparatus

Publications (1)

Publication Number Publication Date
JPS56134130A true JPS56134130A (en) 1981-10-20

Family

ID=12402851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3402680A Pending JPS56134130A (en) 1980-03-19 1980-03-19 Electric discharge machining apparatus

Country Status (1)

Country Link
JP (1) JPS56134130A (en)

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