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KR960021329A - Servo control method of wire cut electric discharge machine - Google Patents

Servo control method of wire cut electric discharge machine Download PDF

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Publication number
KR960021329A
KR960021329A KR1019940036056A KR19940036056A KR960021329A KR 960021329 A KR960021329 A KR 960021329A KR 1019940036056 A KR1019940036056 A KR 1019940036056A KR 19940036056 A KR19940036056 A KR 19940036056A KR 960021329 A KR960021329 A KR 960021329A
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KR
South Korea
Prior art keywords
inter
servo
pole
voltage
control
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KR1019940036056A
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Korean (ko)
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KR0166125B1 (en
Inventor
김희택
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석진철
대우중공업 주식회사
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Publication of KR960021329A publication Critical patent/KR960021329A/en
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    • 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
    • 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
    • B23H7/04—Apparatus for supplying current to working gap; Electric circuits specially adapted therefor
    • 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
    • B23H7/20—Electric circuits specially adapted therefor, e.g. power supply for programme-control, e.g. adaptive

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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 컷 방전 가공기의 서보제어방법에 관한 것으로, 와이어와 가공물간의 극간전압을 검출하여 디지탈로 변환하고 설정된 기준들과 비교하여 극간정보를 발생하는 극간전압감지/거리제어부(60)에 의해 수행되는 극간정보 발생과정과, 상기 극간제어정보 발생과정에서 발생된 극간정보를 입력하여 서보의 위치를 제어하기 위해 가공제어부(70)에 의해 수행되는 추종제어과정과, 상기 추종제어과정에 의해 활성화되어 상기 극간제어정보 발생과정의 파라메터를 변경시키는 파라메터 조정과정을 구비하여 파라메터를 변경하므로써 서보제어지령을 유연하게 결정할 수 있게 된 것이다.The present invention relates to a servo control method of a wire cut electric discharge machine, by the inter-pole voltage sensing / distance control unit (60) which detects the inter-pole voltage between the wire and the workpiece, converts it to digital, and generates inter-pole information in comparison with the set criteria. The interpolation information generation process to be performed, the following control process performed by the processing control unit 70 to control the position of the servo by inputting the interpolation information generated during the interpolation control information generation process, and activated by the following control process It is possible to flexibly determine the servo control command by changing the parameter by including a parameter adjusting step of changing the parameter of the inter-pole control information generation process.

Description

와이어 컷 방전 가공기의 서보제어방법Servo control method of wire cut electric discharge machine

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 일반적인 와이어 컷 방전 가공기를 도시한 블럭도,1 is a block diagram showing a general wire cut electric discharge machine,

제2도는 제1도의 극간 전압 감지/거리 제어부에 대한 상세 블럭도,FIG. 2 is a detailed block diagram of the interpolar voltage sensing / distance controller of FIG.

제4도는 본 발명에 다른 아이어캇 방전 가공기를 도시한 블럭도,Figure 4 is a block diagram showing an Ierkat discharge processing machine according to the present invention,

제5도는 본 발명에 다른 와이어 컷 방전 가공기의 서보제어동작을 도시한 흐름도이다.5 is a flowchart showing the servo control operation of the wire cut electric discharge machine according to the present invention.

Claims (1)

와이어와 가공물간의 극간정압을 검출하여 디지탈로 변환하고 설정된 기준값들과 비교하여 극간정보를 발생하는 극간전압감지/거리제어부(60)에 의해 수행되는 극간정보 발생과정과, 상기 극간제어정보발생과정에서 발생된 극간정보를 입력하여 서보의 위치를 제어하기 위해 가공제어부(70)에 의해 수행되는 추종제어과정과, 상기 추종제어과정에 의해 활성화되어 상기 극간제어정보 발생과정의 파라메터를 변경시키는 파라메터 조정과정을 구비한 와이어 캇 방전가공기의 서보제어방법에 있어서, 상기 극간제어정보 발생과정은, 극간정압감지/거리제어부의 파라메터를 초기화하는 제1단계와; 설정된 극간전압 무시시간이 경과하면 검출된 극간전압을 읽어오는 제2단계; 읽어온 극간전압을 전진기준전압과 비교하여 극간전압이 기준전압보다 높으면 전진임시변수를 1증가시키는 제3단계; 읽어온 극간전압을 후퇴기준전압과 비교하여 극간전압이 기준전압보다 낮으면 후퇴임시 변수를 1증가시키는 제4단계; 읽어온 극간전압이 후퇴기준전압보다 낮지도, 전진기준전압보다 높지도 않으면 일시정지 임수변수를 1증가시키는 제5단계; 상기 제2단계로부터 제5단계를 수행한 후 유효감지횟수를 1회 카운트한 후 누적된 카운트 횟수가 설정된 기준 횟수를 초과하지 않으면 상기 제2단계부터 5단계로 반복하는 제6단계; 제6단계에서 카운트 횟수가 기준횟수를 초과하면, 전진 기준 횟수와 상기 전진 임시변수값을 비교하여 서보전진을 결정하는 제7단계; 후퇴 기준 횟수와 상기 후퇴 임시변수값을 비교하여 서보후퇴를 결정하는 제8단계; 서보전진 및 서보후퇴가 아니면 서보일시정지를 결정하는 제9단계를 구비하고, 상기 추종제어과정은, 상기 극간제어정보발생과정에서 발생된 극간정보를 읽어오는 단계; 상기 극간정보를 누적한 수가 설정된 서보명령의 기준수를 초과하면 해당 서보명령을 발생시키는 단계; 상기 극간정보를 누적한 수가 기준수를 초과하지 않으면 극간정보 파라메터조정변수가 ″1″인지를 판단하여 1이면 상기 파라메터 조정과정을 할성하시키는 단계를 구비하고, 상기 파라메터 조정과정은, 상기 추종제어과정에 의해 활성화되어 전진임시변수(FORE-PERCENT), 후퇴임시변수(BACK-PERCENT), 전진기준전압(FORE-LEVEL), 및 후퇴기준전압(BACK-LEVEL)을 수정하고, 파라메터 조정변수를 ″0″으로 클리어시키는 것을 특징으로 하는 와이어 컷 방전 가공기의 서보제어방법.Interpolation information generation process performed by the interpolation voltage sensing / distance control unit 60 which detects the interpolation static pressure between the wire and the workpiece, converts it into digital, and compares the set reference values with the interpolation information, and in the interpolation control information generation process. A follow-up control process performed by the machining control unit 70 to control the position of the servo by inputting the generated inter-pole information, and a parameter adjusting process that is activated by the following control process to change parameters of the inter-pole control information generation process. In the servo control method of the wire-cut discharge processing machine having the above, the inter-pole control information generation process, the first step of initializing the parameters of the inter-polar static pressure detection / distance control unit; Reading the detected inter-pole voltage when the set inter-pole voltage disregard time elapses; A third step of comparing the read-out interpolation voltage with the forward reference voltage and increasing the forward temporary variable by one if the interpolar voltage is higher than the reference voltage; A fourth step of comparing the read-out interpolation voltage with the retreat reference voltage and increasing the retreat temporary variable by one if the interpolar voltage is lower than the reference voltage; A fifth step of increasing the temporary stop variable by one if the interpolar voltage read is not lower than the retreat reference voltage or higher than the forward reference voltage; A sixth step of repeating the second to five steps if the accumulated count number does not exceed the set reference number after the effective detection number is counted once after performing the fifth step from the second step; A seventh step of determining servo advance by comparing the forward reference number with the forward temporary variable value when the count number exceeds the reference number in the sixth step; An eighth step of determining a servo retraction by comparing the retraction reference number with the retreat temporary variable value; And a ninth step of determining servo pause if not servo advance and servo retraction, and the tracking control process comprises: reading inter-pole information generated during the inter-pole control information generation process; Generating a corresponding servo command if the accumulated number of the interval information exceeds a reference number of a set servo command; And if the accumulated number of inter-pole information does not exceed the reference number, determining whether the inter-pole information parameter adjustment variable is ″ 1 ″, and if the value is 1, deactivating the parameter adjustment process. The parameter adjustment process may include the following control. Activated by the process to correct the FOR-PERCENT, BACK-PERCENT, FOR-LEVEL, and BACK-LEVEL, and set the parameter adjustment variable to ″. A servo control method for a wire cut electric discharge machine, characterized by clearing to 0 ″. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940036056A 1994-12-22 1994-12-22 Method of controlling servos in a wire cut electric spark machine Expired - Fee Related KR0166125B1 (en)

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Application Number Priority Date Filing Date Title
KR1019940036056A KR0166125B1 (en) 1994-12-22 1994-12-22 Method of controlling servos in a wire cut electric spark machine

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Application Number Priority Date Filing Date Title
KR1019940036056A KR0166125B1 (en) 1994-12-22 1994-12-22 Method of controlling servos in a wire cut electric spark machine

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KR960021329A true KR960021329A (en) 1996-07-18
KR0166125B1 KR0166125B1 (en) 1999-02-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100479153B1 (en) * 2001-11-29 2005-03-25 미쓰비시덴키 가부시키가이샤 Method of and apparatus for wire electric-discharge machining
KR100501911B1 (en) * 1998-08-28 2005-11-25 두산인프라코어 주식회사 Method of controlling servo in a wire cut electrical discharge machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6506349B2 (en) * 2017-06-19 2019-04-24 ファナック株式会社 Control device of wire electric discharge machine, and control method of wire electric discharge machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100501911B1 (en) * 1998-08-28 2005-11-25 두산인프라코어 주식회사 Method of controlling servo in a wire cut electrical discharge machine
KR100479153B1 (en) * 2001-11-29 2005-03-25 미쓰비시덴키 가부시키가이샤 Method of and apparatus for wire electric-discharge machining

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KR0166125B1 (en) 1999-02-01

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