JPS5721227A - Electrical discharge machining level position detector - Google Patents

Electrical discharge machining level position detector

Info

Publication number
JPS5721227A
JPS5721227A JP9259980A JP9259980A JPS5721227A JP S5721227 A JPS5721227 A JP S5721227A JP 9259980 A JP9259980 A JP 9259980A JP 9259980 A JP9259980 A JP 9259980A JP S5721227 A JPS5721227 A JP S5721227A
Authority
JP
Japan
Prior art keywords
pulse
edm
discharge
machining
level position
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.)
Pending
Application number
JP9259980A
Other languages
Japanese (ja)
Inventor
Toshihiko Furukawa
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.)
SODEITSUKU KK
Sodick Co Ltd
Original Assignee
SODEITSUKU KK
Sodick Co 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 SODEITSUKU KK, Sodick Co Ltd filed Critical SODEITSUKU KK
Priority to JP9259980A priority Critical patent/JPS5721227A/en
Publication of JPS5721227A publication Critical patent/JPS5721227A/en
Pending 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
    • 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
    • B23H7/14—Electric circuits specially adapted therefor, e.g. power supply
    • B23H7/18—Electric circuits specially adapted therefor, e.g. power supply for maintaining or controlling the desired spacing between electrode and workpiece

Landscapes

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

Abstract

PURPOSE:To provide accurate and efficient eletrical discharge machining (EDM) for deburring etc. by detecting the increase and decrease of the number of discharge pulses according to the change of EDM area to detect whether the machining level position has been reached to the predetermined level. CONSTITUTION:The bur 14 around the bottom through hole 13 of a workpiece 11 is removed by EDM. A pulse power source 16 is connected between an electrode 12 and a workpiece 11, and a discharge detector 17 is connected in a series with the pulse source 16. With a discharge occurring in machining gap, its detecting signal S1 becomes a pulse signal and is counted by a counter 20. The counting data D1 counted with a pulse generating period of a gate pulse generator 19 is memorized in No.1 memory and the counting data D2 for one period before D1 is memorized in No.2 memory 25, and the difference between D1 and D2 is found by a reduction calculator 26. A discriminating signal S2 is output when the difference exceeds the predetermined number, enabling the detection of the electrode reaching the bottom surface.
JP9259980A 1980-07-09 1980-07-09 Electrical discharge machining level position detector Pending JPS5721227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9259980A JPS5721227A (en) 1980-07-09 1980-07-09 Electrical discharge machining level position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9259980A JPS5721227A (en) 1980-07-09 1980-07-09 Electrical discharge machining level position detector

Publications (1)

Publication Number Publication Date
JPS5721227A true JPS5721227A (en) 1982-02-03

Family

ID=14058908

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9259980A Pending JPS5721227A (en) 1980-07-09 1980-07-09 Electrical discharge machining level position detector

Country Status (1)

Country Link
JP (1) JPS5721227A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61274813A (en) * 1985-05-30 1986-12-05 Fanuc Ltd Confirming device for hole machining completion in electric discharge machine
US4651054A (en) * 1983-06-29 1987-03-17 Kabushiki Kaisha Toshiba Color picture tube
US5847351A (en) * 1996-03-04 1998-12-08 Denso Corporation Electrode feeding apparatus for electric-discharge machining
CN1102471C (en) * 1998-05-08 2003-03-05 三菱电机株式会社 Device and method for positioning electric discharge machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651054A (en) * 1983-06-29 1987-03-17 Kabushiki Kaisha Toshiba Color picture tube
JPS61274813A (en) * 1985-05-30 1986-12-05 Fanuc Ltd Confirming device for hole machining completion in electric discharge machine
US4760233A (en) * 1985-05-30 1988-07-26 Fanuc Ltd Drilling confirming apparatus of electric discharge machining system
JPH0479769B2 (en) * 1985-05-30 1992-12-16 Fanuc Ltd
US5847351A (en) * 1996-03-04 1998-12-08 Denso Corporation Electrode feeding apparatus for electric-discharge machining
CN1102471C (en) * 1998-05-08 2003-03-05 三菱电机株式会社 Device and method for positioning electric discharge machine
US7113884B1 (en) * 1998-05-08 2006-09-26 Mitsubishi Denki Kabushiki Kaisha Positioning apparatus for an electrical discharge machine and a method therefor

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