JPS645726A - Electric discharge processing machine - Google Patents

Electric discharge processing machine

Info

Publication number
JPS645726A
JPS645726A JP16168487A JP16168487A JPS645726A JP S645726 A JPS645726 A JP S645726A JP 16168487 A JP16168487 A JP 16168487A JP 16168487 A JP16168487 A JP 16168487A JP S645726 A JPS645726 A JP S645726A
Authority
JP
Japan
Prior art keywords
dispersion value
discharge
processing
abnormal
electrode
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
JP16168487A
Other languages
Japanese (ja)
Other versions
JPH0675807B2 (en
Inventor
Hidetoshi Kawazu
Takuji Magara
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 JP62161684A priority Critical patent/JPH0675807B2/en
Publication of JPS645726A publication Critical patent/JPS645726A/en
Publication of JPH0675807B2 publication Critical patent/JPH0675807B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

PURPOSE:To avoid abnormal processing by calculating the dispersion value of interpolar resistance dropping time as the passage time with a dispersion value calculator, judging thereupon eventual abnormal processing, and by changing over the electrode regular pullup condition automatically. CONSTITUTION:A Td measuring apparatus 12 measures the no-load time Td of each discharge waveform, and on the basis of the result therefrom a discharge waveform classifier 13 classifies discharge pulses into immediate discharge D1, normal discharge D2, and open D3, which is counted by counters 14-16, and according to the determined frequency a controller 18 makes servo feeding of electrode. On the other hand, the dispersion value of the interpolar resistance dropping time Tc of each discharge waveform measured by a Tc measuring apparatus 26 is calculated by a Tc dispersion value calculator 28 with the aid of a memory 27. A processing condition judging device 29 judges whether processing is normal upon the Tc dispersion value exceeding the specified level, and if abnormal, a controller 30 makes automatic changeover of the electrode regular pullup condition. This avoids abnormal processing certainly to accomplish stable and effective processing.
JP62161684A 1987-06-29 1987-06-29 Electric discharge machine Expired - Lifetime JPH0675807B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62161684A JPH0675807B2 (en) 1987-06-29 1987-06-29 Electric discharge machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62161684A JPH0675807B2 (en) 1987-06-29 1987-06-29 Electric discharge machine

Publications (2)

Publication Number Publication Date
JPS645726A true JPS645726A (en) 1989-01-10
JPH0675807B2 JPH0675807B2 (en) 1994-09-28

Family

ID=15739881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62161684A Expired - Lifetime JPH0675807B2 (en) 1987-06-29 1987-06-29 Electric discharge machine

Country Status (1)

Country Link
JP (1) JPH0675807B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0463625A (en) * 1990-06-29 1992-02-28 Fanuc Ltd Discharge machining device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59205225A (en) * 1983-05-04 1984-11-20 Mitsubishi Electric Corp Electric discharge machining device
JPS60259321A (en) * 1984-06-06 1985-12-21 Mitsubishi Electric Corp Electric discharge machine
JPS61111818A (en) * 1984-11-05 1986-05-29 Mitsubishi Electric Corp Spark erosion apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59205225A (en) * 1983-05-04 1984-11-20 Mitsubishi Electric Corp Electric discharge machining device
JPS60259321A (en) * 1984-06-06 1985-12-21 Mitsubishi Electric Corp Electric discharge machine
JPS61111818A (en) * 1984-11-05 1986-05-29 Mitsubishi Electric Corp Spark erosion apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0463625A (en) * 1990-06-29 1992-02-28 Fanuc Ltd Discharge machining device

Also Published As

Publication number Publication date
JPH0675807B2 (en) 1994-09-28

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