JPS57168833A - Detecting method of electric discharge machining condition - Google Patents

Detecting method of electric discharge machining condition

Info

Publication number
JPS57168833A
JPS57168833A JP4937681A JP4937681A JPS57168833A JP S57168833 A JPS57168833 A JP S57168833A JP 4937681 A JP4937681 A JP 4937681A JP 4937681 A JP4937681 A JP 4937681A JP S57168833 A JPS57168833 A JP S57168833A
Authority
JP
Japan
Prior art keywords
arc discharge
machining
voltage
electric discharge
discharge
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
JP4937681A
Other languages
Japanese (ja)
Other versions
JPH022650B2 (en
Inventor
Masakazu Kishi
Atsushi Omori
Yasuo Suzuki
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 JP4937681A priority Critical patent/JPS57168833A/en
Publication of JPS57168833A publication Critical patent/JPS57168833A/en
Publication of JPH022650B2 publication Critical patent/JPH022650B2/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
    • B23H1/024—Detection of, and response to, abnormal gap conditions, e.g. short circuits

Landscapes

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

Abstract

PURPOSE:To discriminate a machining condition in no relation to a machining speed, by detecting time proportion of no-arc discharge, arc discharge and short- circuit for a time of applying pulse voltage to an electrode and detecting only a pulse of the arc discharge. CONSTITUTION:Machining pulse voltage of electric discharge machining changes in accordance with an electric discharge condition, and its waveform is obtained as shown by Vga at a normal electric discharge. No-arc discharge voltage Vgd, arc discharge voltage Vgb and short-circuit voltage Vgc are decided by a comparator with threshold voltages E1, E2, and a generation time of these voltages is detected. These detection signals are obtained as the proportion for a machining pulse applying time and utilized for showing an electric discharge condition in no relation to a machining speed. When the waveform Vgb of only an arc discharge, not contained with no-arc discharge voltage, is continued a prescribed number of times, a detection signal F of abnormal arc discharge is generated.
JP4937681A 1981-04-03 1981-04-03 Detecting method of electric discharge machining condition Granted JPS57168833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4937681A JPS57168833A (en) 1981-04-03 1981-04-03 Detecting method of electric discharge machining condition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4937681A JPS57168833A (en) 1981-04-03 1981-04-03 Detecting method of electric discharge machining condition

Publications (2)

Publication Number Publication Date
JPS57168833A true JPS57168833A (en) 1982-10-18
JPH022650B2 JPH022650B2 (en) 1990-01-18

Family

ID=12829300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4937681A Granted JPS57168833A (en) 1981-04-03 1981-04-03 Detecting method of electric discharge machining condition

Country Status (1)

Country Link
JP (1) JPS57168833A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005319577A (en) * 2004-05-07 2005-11-17 General Electric Co <Ge> Distributed arc electroerosion

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51119597A (en) * 1975-04-14 1976-10-20 Inoue Japax Res Inc Method and apparatus of controlling gap in discharge processing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51119597A (en) * 1975-04-14 1976-10-20 Inoue Japax Res Inc Method and apparatus of controlling gap in discharge processing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005319577A (en) * 2004-05-07 2005-11-17 General Electric Co <Ge> Distributed arc electroerosion

Also Published As

Publication number Publication date
JPH022650B2 (en) 1990-01-18

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