KR970033340A - Disconnection prevention device of wire electric discharge machine - Google Patents

Disconnection prevention device of wire electric discharge machine Download PDF

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Publication number
KR970033340A
KR970033340A KR1019950054777A KR19950054777A KR970033340A KR 970033340 A KR970033340 A KR 970033340A KR 1019950054777 A KR1019950054777 A KR 1019950054777A KR 19950054777 A KR19950054777 A KR 19950054777A KR 970033340 A KR970033340 A KR 970033340A
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KR
South Korea
Prior art keywords
wire electrode
discharge
workpiece
voltage
wire
Prior art date
Application number
KR1019950054777A
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Korean (ko)
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KR0169650B1 (en
Inventor
류재희
Original Assignee
석진철
대우중공업 주식회사
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.)
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Publication date
Application filed by 석진철, 대우중공업 주식회사 filed Critical 석진철
Priority to KR1019950054777A priority Critical patent/KR0169650B1/en
Publication of KR970033340A publication Critical patent/KR970033340A/en
Application granted granted Critical
Publication of KR0169650B1 publication Critical patent/KR0169650B1/en

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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
    • B23H7/14—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
    • 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
    • B23H2300/00—Power source circuits or energization
    • B23H2300/20—Relaxation circuit power supplies for supplying the machining current, e.g. capacitor or inductance energy storage circuits
    • 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
    • B23H7/02—Wire-cutting

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

Abstract

본 발명은 와이어 전극과 피가공물이 접촉되면 이를 감지하여 상기 와이어 전극에 인가되는 방전 전압을 차단함과 동시에 상기 와이어 전극을 상기 피가공물로부터 격리시키는 와이어 방전 가공기의 단선방지 장치에 관한 것으로서, 와이어 전극과 피가공물 사이에 방전 전압이 인가되는 도중에도 상기 와이어 전극과 피가공물 사이의 전압을 검출할 수 있고, 상기 검출 전압에 따라 방전용 스위치를 온/오프시킴으로 상기 와이어 전극에 인가되는 충전용 콘덴서의 방전 전업을 도통 또는 차단시킬 수 있어, 보다 안정적이고 경제적이며 효율적인 방전가공을 수행할 수 있고, 가공 속도가 향상됨과 아울러 와이어의 단선이 예방되는 효과가 있다.The present invention relates to a wire disconnection preventing device of a wire discharge processor which detects a contact between a wire electrode and a workpiece, cuts off a discharge voltage applied to the wire electrode, and simultaneously isolates the wire electrode from the workpiece. While the discharge voltage is applied between the workpiece and the workpiece, the voltage between the wire electrode and the workpiece can be detected, and the discharge capacitor is applied to the wire electrode by turning on / off a discharge switch according to the detected voltage. Discharge electric work can be conducted or interrupted, so that more stable, economical and efficient electric discharge machining can be performed, and the machining speed is improved and wire breakage is prevented.

Description

와이어 방전 가공기의 단선 방지 장치Disconnection prevention device of wire electric discharge machine

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 의한 와이어 방전 가공기의 단성 방지 장치의 구성도.2 is a configuration diagram of the anti-single device for a wire discharge machine according to the present invention.

제3도는 본 발명에 의한 단선 방지부의 상세 회로도이다.3 is a detailed circuit diagram of the disconnection prevention unit according to the present invention.

Claims (2)

전원을 축적하는 충전용 콘덴서(11)와, 상기 충전용 콘덴서(11)와 와이어 전극(1)사이에 접속되어 상기 충전용 콘덴서(11)의 방전을 온/오프하는 방전용 스위치(12)와, 상기 방전용 스위치(12)를 제어하는 방전 제어부(13)와, 상기 와이어 전극(1)을 이동시키는 구동 롤러(14)와, 상기 와이어 전극(1)과 피가공물(2) 사이의 전압을 검출하여 상기 와이어 전극(1)과 피가공물(2)간의 절연이 불량하면 접촉 감지 신호(ST)를 출력하는 단선 방지부(15)와, 상기 단선 방지부(15)에서 접축 감지 신호(ST)가 출력되면 상기 구동 롤러(14)를 구동시킴으로 상기 와이어 전극(1)을 이동시키는 중앙 제어부(16)로 구성된 것을 특징으로 하는 와이어 방전 가공기의 단선방지 장치.A charge capacitor 11 for accumulating power, a discharge switch 12 connected between the charge capacitor 11 and a wire electrode 1 to turn on / off the discharge of the charge capacitor 11; And a discharge controller 13 for controlling the discharge switch 12, a driving roller 14 for moving the wire electrode 1, and a voltage between the wire electrode 1 and the workpiece 2. The disconnection prevention unit 15 which detects and outputs a contact detection signal ST when the insulation between the wire electrode 1 and the workpiece 2 is poor, and the contact detection signal ST is detected by the disconnection prevention unit 15. The output of the wire breaker of the wire discharge processing machine, characterized in that consisting of a central control unit for moving the wire electrode (1) by driving the drive roller (14) when the output. 제1항에 있어서, 상기한 단선 방지부(15)는, 와이어 전극(1)과 피가공물(2) 사이의 전압을 검출하는 다이오드(21) 및 제너 다이오드(22)와, 다이오드(21) 및 제너 다이오드(22)를 통해 검출된 검출 전압(Va)과 기준 전압(Vb)을 비교하는 비교기(23)와, 상기 비교기(23)에서 출력되는 전압을 승압시키는 동시에 반전시키는 신호반전기(24)와, 상기 신호 반전기(24)에서 출력되는 신호를 정류하여 접촉 감지 신호(ST)를 출력하는 정류용 콘덴서(25)로 구성된 것을 특징으로 하는 와이어 방전 가공기의 단선 방지 장치.The disconnection preventing unit 15 according to claim 1, wherein the disconnection prevention unit 15 includes a diode 21 and a zener diode 22 for detecting a voltage between the wire electrode 1 and the workpiece 2, the diode 21 and Comparator 23 for comparing the detected voltage Va and the reference voltage Vb detected through the zener diode 22, and a signal inverter 24 for boosting and inverting the voltage output from the comparator 23. And a rectifier capacitor (25) for rectifying the signal output from the signal inverter (24) to output the touch detection signal (ST). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950054777A 1995-12-22 1995-12-22 Apparatus for preventing a disconnection in a wire-cut electric spark machine KR0169650B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950054777A KR0169650B1 (en) 1995-12-22 1995-12-22 Apparatus for preventing a disconnection in a wire-cut electric spark machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950054777A KR0169650B1 (en) 1995-12-22 1995-12-22 Apparatus for preventing a disconnection in a wire-cut electric spark machine

Publications (2)

Publication Number Publication Date
KR970033340A true KR970033340A (en) 1997-07-22
KR0169650B1 KR0169650B1 (en) 1999-03-20

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Application Number Title Priority Date Filing Date
KR1019950054777A KR0169650B1 (en) 1995-12-22 1995-12-22 Apparatus for preventing a disconnection in a wire-cut electric spark machine

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100432098B1 (en) * 2002-02-22 2004-05-17 (주)백제윈테크 Super drill setting method for 0.1pi punching structure

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KR0169650B1 (en) 1999-03-20

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