JPS56157927A - Electric discharge machining device - Google Patents

Electric discharge machining device

Info

Publication number
JPS56157927A
JPS56157927A JP5060781A JP5060781A JPS56157927A JP S56157927 A JPS56157927 A JP S56157927A JP 5060781 A JP5060781 A JP 5060781A JP 5060781 A JP5060781 A JP 5060781A JP S56157927 A JPS56157927 A JP S56157927A
Authority
JP
Japan
Prior art keywords
electrode
electric discharge
main shaft
memory
numerical control
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
JP5060781A
Other languages
Japanese (ja)
Other versions
JPS5736098B2 (en
Inventor
Kiyoshi Inoue
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.)
Inoue Japax Research Inc
Original Assignee
Inoue Japax Research Inc
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 Inoue Japax Research Inc filed Critical Inoue Japax Research Inc
Priority to JP5060781A priority Critical patent/JPS56157927A/en
Publication of JPS56157927A publication Critical patent/JPS56157927A/en
Publication of JPS5736098B2 publication Critical patent/JPS5736098B2/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
    • B23H7/26—Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G05B19/4065—Monitoring tool breakage, life or condition

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

PURPOSE:To detect abnormality of a tool electrode when the tool electrode is automatically replaced, by comparing a detected position of electric discharge machining start with its predetermined value and generating an output signal when a difference not less than a fixed value is detected. CONSTITUTION:When tool electrodes 2-5 are replaced, a numerical control device 14 inputs expected position information of a main shaft 8 at the time of electric discharge machining start to a memory 22 in an electrode abnormality detecting device I. The tool electrode is replaced, then a main shaft is moved and lowered by a command from the numerical control device, if electric discharge is initially caused between the electrode and a machined body 6, output of a main shaft position indicating transmitter 9 is both input to a memory 21 and compared in a comparator 23 with the expected value of the memory 22, when its difference is not less than a permissible value the numerical control device is allowed to cease machining operation. The electrode abnormality detecting device I can also balance the length with each other in combination use of backup electrode abnormality detecting devices II, III having different characteristics.
JP5060781A 1981-04-06 1981-04-06 Electric discharge machining device Granted JPS56157927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5060781A JPS56157927A (en) 1981-04-06 1981-04-06 Electric discharge machining device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5060781A JPS56157927A (en) 1981-04-06 1981-04-06 Electric discharge machining device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP12919475A Division JPS5253598A (en) 1975-10-29 1975-10-29 Apparatus for electrical discharge machining

Publications (2)

Publication Number Publication Date
JPS56157927A true JPS56157927A (en) 1981-12-05
JPS5736098B2 JPS5736098B2 (en) 1982-08-02

Family

ID=12863647

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5060781A Granted JPS56157927A (en) 1981-04-06 1981-04-06 Electric discharge machining device

Country Status (1)

Country Link
JP (1) JPS56157927A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4626645A (en) * 1983-09-12 1986-12-02 Inoue-Japax Research Incorporated Automatic TW electroerosion machining system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4626645A (en) * 1983-09-12 1986-12-02 Inoue-Japax Research Incorporated Automatic TW electroerosion machining system

Also Published As

Publication number Publication date
JPS5736098B2 (en) 1982-08-02

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