JPS55125934A - Wire cut electrical discharge machining apparatus - Google Patents

Wire cut electrical discharge machining apparatus

Info

Publication number
JPS55125934A
JPS55125934A JP3357279A JP3357279A JPS55125934A JP S55125934 A JPS55125934 A JP S55125934A JP 3357279 A JP3357279 A JP 3357279A JP 3357279 A JP3357279 A JP 3357279A JP S55125934 A JPS55125934 A JP S55125934A
Authority
JP
Japan
Prior art keywords
abnormal discharge
detected
working
reference value
voltage change
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
JP3357279A
Other languages
Japanese (ja)
Other versions
JPS6247650B2 (en
Inventor
Yoshio Ozaki
Takeshi Yatomi
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 JP3357279A priority Critical patent/JPS55125934A/en
Publication of JPS55125934A publication Critical patent/JPS55125934A/en
Publication of JPS6247650B2 publication Critical patent/JPS6247650B2/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
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/02—Wire-cutting
    • B23H7/04—Apparatus for supplying current to working gap; Electric circuits specially adapted therefor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

PURPOSE:To prevent a wire electrode from being disconnected by detecting the average working voltage change in a specific frequency band and abnormal discharge and weakening the working condition at abnormal discharge. CONSTITUTION:The change of the average working voltage is detected by the abnormal discharge detection circuit 26 and the electrical condition of the working power source 14 is controlled by the thus-detected value. The abnormal discharge detection circuit 26 contains the frequency divider 28, low pass filter 30, comparator 32, and reference value setting circuit 34. After a relatively high inter-electrode voltage is reduced by a potential divider 28, only the average working voltage change in a specific frequency band is detected and this voltage change is compared with the reference value of the reference value setting circuit 34 with the comparator 32. When any abnormal discharge is detected by this, the working condition by the working power supply 14 is weakened and the disconnection of a wire electrode is prevented.
JP3357279A 1979-03-22 1979-03-22 Wire cut electrical discharge machining apparatus Granted JPS55125934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3357279A JPS55125934A (en) 1979-03-22 1979-03-22 Wire cut electrical discharge machining apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3357279A JPS55125934A (en) 1979-03-22 1979-03-22 Wire cut electrical discharge machining apparatus

Publications (2)

Publication Number Publication Date
JPS55125934A true JPS55125934A (en) 1980-09-29
JPS6247650B2 JPS6247650B2 (en) 1987-10-08

Family

ID=12390249

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3357279A Granted JPS55125934A (en) 1979-03-22 1979-03-22 Wire cut electrical discharge machining apparatus

Country Status (1)

Country Link
JP (1) JPS55125934A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4582974A (en) * 1982-08-02 1986-04-15 Mitsubishi Denki Kabushiki Kaisha Electric discharge machine including means for detecting abnormal discharge conditions
US4731514A (en) * 1985-09-27 1988-03-15 Mohri Naotake Method for predicting breaking of wire electrode in wire electrode type electric discharge machining operation
US4864091A (en) * 1988-03-15 1989-09-05 Ag Fur Industrielle, Elektronik Agie Servocontrol device for an erosion machine
EP1004385A1 (en) * 1998-05-12 2000-05-31 Mitsubishi Denki Kabushiki Kaisha Method and apparatus for electrodischarge machining

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51131998A (en) * 1975-05-13 1976-11-16 Inoue Japax Res Inc Wire cutting electrical discharge machining device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51131998A (en) * 1975-05-13 1976-11-16 Inoue Japax Res Inc Wire cutting electrical discharge machining device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4582974A (en) * 1982-08-02 1986-04-15 Mitsubishi Denki Kabushiki Kaisha Electric discharge machine including means for detecting abnormal discharge conditions
US4731514A (en) * 1985-09-27 1988-03-15 Mohri Naotake Method for predicting breaking of wire electrode in wire electrode type electric discharge machining operation
US4864091A (en) * 1988-03-15 1989-09-05 Ag Fur Industrielle, Elektronik Agie Servocontrol device for an erosion machine
EP1004385A1 (en) * 1998-05-12 2000-05-31 Mitsubishi Denki Kabushiki Kaisha Method and apparatus for electrodischarge machining
EP1004385A4 (en) * 1998-05-12 2007-12-05 Mitsubishi Electric Corp Method and apparatus for electrodischarge machining

Also Published As

Publication number Publication date
JPS6247650B2 (en) 1987-10-08

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