JPS5554140A - Discharge processing device - Google Patents

Discharge processing device

Info

Publication number
JPS5554140A
JPS5554140A JP13808579A JP13808579A JPS5554140A JP S5554140 A JPS5554140 A JP S5554140A JP 13808579 A JP13808579 A JP 13808579A JP 13808579 A JP13808579 A JP 13808579A JP S5554140 A JPS5554140 A JP S5554140A
Authority
JP
Japan
Prior art keywords
discharge
time
load voltage
transistor groups
processing
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
JP13808579A
Other languages
Japanese (ja)
Other versions
JPS6057972B2 (en
Inventor
Kazuhiko Kobayashi
Toshiro Oizumi
Nagao Saito
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 JP54138085A priority Critical patent/JPS6057972B2/en
Publication of JPS5554140A publication Critical patent/JPS5554140A/en
Publication of JPS6057972B2 publication Critical patent/JPS6057972B2/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

Landscapes

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

Abstract

PURPOSE:To enable a stable processing, by rapidly regulating a discharge duration of an individual pulse according to the results obtained as a result of averaging processing gap condition being detected and the time length of a no-load voltage impressing time in each pulse. CONSTITUTION:Transistor groups 3A-3N are closed by means of signals from an amplifier 7, a voltage being impressed to a processing gap provided between a discharge processing electrode 1 and an object 2 to be processed. Discharge then starts in a certain time lag, a discharge-starting being detected by means of a no-load voltage impressing time measuring device 18 via a resistance 17. Thus, a no-load voltage impressing time, which has elapsed before discharge is generated, is determined. A discharge duration control device 20 regulates a discharge duration according to said measuring results and the output of a processing gap condition detecting device 19, said transistor groups being opened after a given time has elapsed. Said circuit-opening time, during which the transistor groups are left opened, is decided by means of a quiescent time measuring device 21.
JP54138085A 1979-10-25 1979-10-25 Electric discharge machining equipment Expired JPS6057972B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54138085A JPS6057972B2 (en) 1979-10-25 1979-10-25 Electric discharge machining equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54138085A JPS6057972B2 (en) 1979-10-25 1979-10-25 Electric discharge machining equipment

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP12749872A Division JPS5722688B2 (en) 1972-12-19 1972-12-19

Publications (2)

Publication Number Publication Date
JPS5554140A true JPS5554140A (en) 1980-04-21
JPS6057972B2 JPS6057972B2 (en) 1985-12-18

Family

ID=15213597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54138085A Expired JPS6057972B2 (en) 1979-10-25 1979-10-25 Electric discharge machining equipment

Country Status (1)

Country Link
JP (1) JPS6057972B2 (en)

Cited By (2)

* 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
EP0488187A2 (en) * 1990-11-29 1992-06-03 Mitsubishi Denki Kabushiki Kaisha Electrical discharge machine with machining gap voltage control

Cited By (2)

* 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
EP0488187A2 (en) * 1990-11-29 1992-06-03 Mitsubishi Denki Kabushiki Kaisha Electrical discharge machine with machining gap voltage control

Also Published As

Publication number Publication date
JPS6057972B2 (en) 1985-12-18

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