JPS55157431A - Device for automatically setting discharge pulse energy - Google Patents

Device for automatically setting discharge pulse energy

Info

Publication number
JPS55157431A
JPS55157431A JP6143679A JP6143679A JPS55157431A JP S55157431 A JPS55157431 A JP S55157431A JP 6143679 A JP6143679 A JP 6143679A JP 6143679 A JP6143679 A JP 6143679A JP S55157431 A JPS55157431 A JP S55157431A
Authority
JP
Japan
Prior art keywords
gate
comparator
pulse
flop
flip
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
JP6143679A
Other languages
Japanese (ja)
Inventor
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 JP6143679A priority Critical patent/JPS55157431A/en
Publication of JPS55157431A publication Critical patent/JPS55157431A/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
    • B23H1/022—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges for shaping the discharge pulse train
    • 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
    • B23H7/16—Electric circuits specially adapted therefor, e.g. power supply for preventing short circuits or other abnormal discharges by altering machining parameters using adaptive control

Abstract

PURPOSE:To reduce the consumption ratio of an electrode independently of a machined area and improve machining efficiency, by automatically decreasing the peak current and width of discharge pulses when the production ratio of normal discharge falls to a prescribed value. CONSTITUTION:When it is detected by a comparator 9 that the rate of acceleration due to the increase in a machined area becomes lower than an initial electrode feed speed stored in a memory circuit, a flip-flop 14 is set by a signal applied to an OR gate 12. A signal produced by a pulse generator 16 is supplied to the positive input terminal of a reversible counter 17 through an AND gate 15 and a decoder 18 acts to increase the peak value by a peak current change-over circuit 19 and the pulse width by a pulse width change-over circuit 20. When it is detected by another comparator 4 that the production ratio of normal discharge falls below about 80%, the flip-flop 14 is reset and the AND gate 15 is turned off and the output signal of the comparator 4 is applied to the negative input terminal of the reversible counter 17 to subtract one pulse from the contents of the counter. As a result, the circuits 19, 20 are returned into their one-stage-preceding stable states and machining is performed.
JP6143679A 1979-05-21 1979-05-21 Device for automatically setting discharge pulse energy Pending JPS55157431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6143679A JPS55157431A (en) 1979-05-21 1979-05-21 Device for automatically setting discharge pulse energy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6143679A JPS55157431A (en) 1979-05-21 1979-05-21 Device for automatically setting discharge pulse energy

Publications (1)

Publication Number Publication Date
JPS55157431A true JPS55157431A (en) 1980-12-08

Family

ID=13171007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6143679A Pending JPS55157431A (en) 1979-05-21 1979-05-21 Device for automatically setting discharge pulse energy

Country Status (1)

Country Link
JP (1) JPS55157431A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS584611U (en) * 1981-06-26 1983-01-12 株式会社　久保製作所 raincoat
JPS59227323A (en) * 1983-06-09 1984-12-20 Mitsubishi Electric Corp Electric discharge machining controller
JPS61136728A (en) * 1984-12-04 1986-06-24 Mitsubishi Electric Corp Spark erosion apparatus
JPS61197123A (en) * 1985-02-28 1986-09-01 Mitsubishi Electric Corp Electric discharge machine
JPS6339735A (en) * 1986-08-06 1988-02-20 Inoue Japax Res Inc Electric discharge boring device
JPH04122521A (en) * 1990-09-13 1992-04-23 Mitsubishi Electric Corp Electric discharge processing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS584611U (en) * 1981-06-26 1983-01-12 株式会社　久保製作所 raincoat
JPS59227323A (en) * 1983-06-09 1984-12-20 Mitsubishi Electric Corp Electric discharge machining controller
JPS61136728A (en) * 1984-12-04 1986-06-24 Mitsubishi Electric Corp Spark erosion apparatus
JPS61197123A (en) * 1985-02-28 1986-09-01 Mitsubishi Electric Corp Electric discharge machine
JPS6339735A (en) * 1986-08-06 1988-02-20 Inoue Japax Res Inc Electric discharge boring device
JPH04122521A (en) * 1990-09-13 1992-04-23 Mitsubishi Electric Corp Electric discharge processing device

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