JPS5570524A - Method of controlling spark machining - Google Patents

Method of controlling spark machining

Info

Publication number
JPS5570524A
JPS5570524A JP12558579A JP12558579A JPS5570524A JP S5570524 A JPS5570524 A JP S5570524A JP 12558579 A JP12558579 A JP 12558579A JP 12558579 A JP12558579 A JP 12558579A JP S5570524 A JPS5570524 A JP S5570524A
Authority
JP
Japan
Prior art keywords
time
load
suspension
tau0
electrical current
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
JP12558579A
Other languages
Japanese (ja)
Inventor
Naoichi Tomimoto
Nagao Saito
Kazuhiko Kobayashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12558579A priority Critical patent/JPS5570524A/en
Publication of JPS5570524A publication Critical patent/JPS5570524A/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

Landscapes

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

Abstract

PURPOSE:To raise the efficiency of spark machining, by controlling the time of electrical current feed suspension or duty factor as a function of no-load time from the application of voltage to a machining gap to the production of discharge. CONSTITUTION:No-load time Kt from the application of voltage to a machining gap between an electrode 1 and a workpiece 2 to the production of discharge is detected at prescribed sampling time. The time Pt of electrical current feed suspension or a duty factor D=tau0/(Pt+tau0), where tau0 denotes discharge time, is controlled as a function of the no-load time Kt. The no-load pulse time Kt is detected by a detection circuit 9. The output of a pulse controller 10, whose electrical current feed suspension time Pt varies as a prescribed function based on the detection signal of the detection circuit 9, is amplified by an amplifier 11. A square-wave pulse is produced by a DC power source and transistors 7A-7N. Such control is effected that the suspension time Pt is shortened when the no-load time Kt is long and that the suspension time Pt is lengthened when the no-load time Kt is short.
JP12558579A 1979-09-29 1979-09-29 Method of controlling spark machining Pending JPS5570524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12558579A JPS5570524A (en) 1979-09-29 1979-09-29 Method of controlling spark machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12558579A JPS5570524A (en) 1979-09-29 1979-09-29 Method of controlling spark machining

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP47098386A Division JPS4956295A (en) 1972-09-30 1972-09-30

Publications (1)

Publication Number Publication Date
JPS5570524A true JPS5570524A (en) 1980-05-28

Family

ID=14913811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12558579A Pending JPS5570524A (en) 1979-09-29 1979-09-29 Method of controlling spark machining

Country Status (1)

Country Link
JP (1) JPS5570524A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01115514A (en) * 1987-10-26 1989-05-08 Hoden Seimitsu Kako Kenkyusho Ltd Power source for electric discharge machining
WO2009015977A1 (en) * 2007-07-27 2009-02-05 Charmilles Technologies S.A. Electon discharge machining method and device.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01115514A (en) * 1987-10-26 1989-05-08 Hoden Seimitsu Kako Kenkyusho Ltd Power source for electric discharge machining
WO2009015977A1 (en) * 2007-07-27 2009-02-05 Charmilles Technologies S.A. Electon discharge machining method and device.

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