JP2644341B2 - Repair method for disconnection of wire-cut electric discharge machine - Google Patents
Repair method for disconnection of wire-cut electric discharge machineInfo
- Publication number
- JP2644341B2 JP2644341B2 JP21983089A JP21983089A JP2644341B2 JP 2644341 B2 JP2644341 B2 JP 2644341B2 JP 21983089 A JP21983089 A JP 21983089A JP 21983089 A JP21983089 A JP 21983089A JP 2644341 B2 JP2644341 B2 JP 2644341B2
- Authority
- JP
- Japan
- Prior art keywords
- wire
- disconnection
- machining
- electric discharge
- processing
- 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.)
- Expired - Fee Related
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
- B23H7/02—Wire-cutting
- B23H7/08—Wire electrodes
- B23H7/10—Supporting, winding or electrical connection of wire-electrode
Landscapes
- 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)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、放電加工の加工経路途中で断線したワイヤ
を結線後に断線位置に復帰させるワイヤカット放電加工
機の断線修復方法に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a disconnection of a wire-cut electric discharge machine for returning a wire broken in the middle of a machining path of electric discharge machining to a disconnected position after connection.
ワイヤカット放電加工機はワークとワイヤとの間にパ
ルス的放電を発生させ、ワークの一部を溶解し、この溶
解した部分をノズル等で吹き飛ばしていき、これを連続
動作させて、ワークを所望の形状に仕上げるものであ
る。The wire-cut electric discharge machine generates a pulse-like discharge between the work and the wire, dissolves a part of the work, blows off the melted part with a nozzle, etc., and operates it continuously to obtain the desired work. The shape is finished.
ワイヤカット放電加工機でワークを加工中に、ワイヤ
が断線した場合、従来はワイヤを一度加工開始点に戻
し、そこでワイヤを結線した後、既に加工した加工経路
に沿ってワイヤを断線した位置まで戻していた。Conventionally, when a wire breaks while a workpiece is being machined by a wire cut electric discharge machine, the wire is once returned to the machining start point, where the wire is connected, and then to the position where the wire was broken along the already machined machining path. I was back.
また、ワイヤ自動結線装置のついた加工機のように、
断線したワイヤを取り除き、加工開始点で新しいワイヤ
を再び結線して、断線位置で自動的に再加工するものも
ある。Also, like a processing machine with an automatic wire connection device,
In some cases, the broken wire is removed, a new wire is connected again at the processing start point, and the wire is automatically reworked at the broken position.
しかし、ワークを加工するとワークの内部歪み等によ
り、ワークが変形する場合がある。また、ワイヤの通過
した後の加工経路には加工くずが残されていることがあ
る。従って、従来のようにワイヤ結線後にこの加工経路
に沿ってワイヤを戻してやろうとすると、ワイヤが加工
くず又は歪んだワーク等に引っ掛かり、断線した位置に
戻る途中で再び断線してしまうという問題があった。However, when a work is processed, the work may be deformed due to internal distortion of the work or the like. In addition, processing waste may be left in the processing path after the wire has passed. Therefore, if the wire is to be returned along this processing path after the wire connection as in the related art, the wire is caught by processing waste or a distorted work or the like, and the wire is broken again while returning to the broken position. there were.
本発明はこのような点に鑑みてなされたものであり、
放電加工時に断線したワイヤを加工開始点で結線後、断
線位置まで戻す場合に、加工くず又は歪んだワークによ
ってワイヤが再度断線することなく高速に断線位置に復
帰できるワイヤカット放電加工機の断線修復方法を提供
することを目的とする。The present invention has been made in view of such a point,
When connecting a broken wire at the machining start point and returning it to the broken position during electric discharge machining, the wire cut EDM machine can restore the wire to the broken position at high speed without breaking the wire again due to machining waste or distorted work. The aim is to provide a method.
本発明では上記課題を解決するために、放電加工の加
工経路途中で断線したワイヤを結線後に断線位置に復帰
させるワイヤカット放電加工機の断線修復方法におい
て、結線後の加工条件を断線点復帰時の放電条件に設定
し、加工実行状態で前記ワイヤを前記加工経路に沿って
前記断線位置まで復帰させることを特徴とするワイヤカ
ット放電加工機の断線修復方法が、提供される。In the present invention, in order to solve the above problems, in a disconnection repairing method of a wire cut electric discharge machine in which a wire that has been disconnected in the middle of a machining path of electrical discharge machining is returned to a disconnection position after connection, the machining condition after connection is set at the time of disconnection point return. And a method for restoring the wire to the disconnection position along the machining path in a machining execution state, the method for repairing a disconnection of a wire-cut electric discharge machine.
結線後のワイヤを断線点復帰時の放電条件に設定し、
加工実行状態で加工経路に沿って断線位置まで復帰させ
る。この断線点復帰時の放電条件は加工くずを除去でき
る程度の放電条件であり、加工時の加工条件に比べて放
電電流は小さい。Set the wire after connection to the discharge condition at the time of return to the disconnection point,
In the processing execution state, it is returned to the disconnection position along the processing path. The discharge condition at the time of the return of the disconnection point is a discharge condition at which machining dust can be removed, and the discharge current is smaller than the machining condition at the time of machining.
従来のようにワイヤを加工経路に沿って断線位置まで
そのまま復帰させると、ワイヤが歪んだワーク又は加工
くずに引っ掛かり、断線した位置に戻る途中で再び断線
してしまう。If the wire is returned to the disconnection position along the processing path as it is in the related art, the wire is caught by the distorted work or processing waste, and is disconnected again while returning to the disconnected position.
一方、加工時と同じ放電状態で復帰させると加工経路
で再び放電加工が行われたと同じ状態になり、加工面の
精度が劣化し、加工誤差が増大する。On the other hand, if it is returned in the same discharge state as during machining, it will be in the same state as when electric discharge machining has been performed again in the machining path, the accuracy of the machined surface will be degraded, and machining errors will increase.
そこで、本発明では、加工くずを除去できる程度の加
工条件で復帰させることによって、歪んだワークに対し
てはその歪みを修正するような加工が行われ、また、加
工くずに対してはそれを放電によって除去することがで
きる。従って、ワイヤは再度断線することなく、高速に
断線位置に復帰することができる。Therefore, in the present invention, processing is performed to correct the distortion on a distorted workpiece by returning the workpiece under processing conditions sufficient to remove the processing debris. It can be removed by discharging. Therefore, the wire can be quickly returned to the disconnection position without disconnection again.
以下、本発明の一実施例を図面を用いて説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
第２図は本発明のワイヤカット放電加工機の概略構成
を示す図である。図において、加工指令テープ１は加工
プログラムがパンチされたテープである。数値制御装置
２はこの加工指令テープ１から加工プログラムを読み取
り、加工プログラムを解読し、サーボモータ３及び４を
駆動しXYテーブル５の移動等、加工機全体を制御する。FIG. 2 is a view showing a schematic configuration of a wire cut electric discharge machine according to the present invention. In the figure, a processing command tape 1 is a tape on which a processing program has been punched. The numerical controller 2 reads the processing program from the processing command tape 1, decodes the processing program, drives the servomotors 3 and 4, and controls the entire processing machine such as movement of the XY table 5.
XYテーブル５はサーボモータ３及び４によって直交２
軸方向に移動可能になっている。このXYテーブル５の上
には導電性の材料からなるワーク６が設置される。XY table 5 is orthogonal 2 by servo motors 3 and 4
It is movable in the axial direction. A work 6 made of a conductive material is placed on the XY table 5.
XYテーブル５及びワーク６の上下にはワイヤを保持す
る上部ワイヤガイド７及び下部ワイヤガイド10が設けら
れている。これらの上下のワイヤガイド７及び10はワイ
ヤをワークに対して正確に加工位置決めするためのもの
である。ワイヤは送り出しリール９から連続的に送出さ
れ、ブレーキ８及び上部ワイヤガイド７を介して、ワー
ク６に達する。ワーク６を通過したワイヤはXYテーブル
５を通過後、下部ワイヤガイド10及びワイヤ送り用ロー
ラ11を介してワイヤ巻き取りリール（ワイヤ回収箱）12
に収納される。An upper wire guide 7 and a lower wire guide 10 for holding wires are provided above and below the XY table 5 and the work 6. These upper and lower wire guides 7 and 10 are for accurately processing and positioning the wire with respect to the workpiece. The wire is continuously delivered from the delivery reel 9 and reaches the work 6 via the brake 8 and the upper wire guide 7. The wire that has passed through the work 6 passes through the XY table 5 and then passes through a lower wire guide 10 and a wire feed roller 11 to take up a wire take-up reel (wire collection box) 12.
Is stored in.
加工電源14からワイヤへの放電加工電圧の供給は上部
ワイヤガイド７とブレーキ８との間に設けられた給電子
13によって行われる。一方、加工電源14の他端は放電制
御手段15によって開閉されるスイッチ16を介してワーク
６に電気的に接続されている。放電制御手段15は放電電
流のオン・オフの時間幅を制御することによって加工特
性を変化させる。The supply of the electric discharge machining voltage from the machining power supply 14 to the wire is performed by the power supply provided between the upper wire guide 7 and the brake 8.
Done by 13. On the other hand, the other end of the machining power supply 14 is electrically connected to the work 6 via a switch 16 opened and closed by the discharge control means 15. The discharge control means 15 changes the machining characteristics by controlling the time width of the on / off of the discharge current.
加工液処理槽17はタンク、ろ過装置及びイオン交換器
等で構成され、噴射ノズル18からワークの加工部分に加
工液を注水する。The processing liquid processing tank 17 is composed of a tank, a filtration device, an ion exchanger, and the like, and injects a processing liquid from the injection nozzle 18 to a processing portion of the workpiece.
以上のように、数値制御装置２の制御信号に基づい
て、サーボモータ３及び４によってXYテーブル５を移動
し、噴射ノズル18から注水しながらワイヤを送行させ、
ワイヤとワーク６との間で、間欠放電を行いワークを加
工する。間欠放電を行うとワーク６の表面が気化、溶融
し、ワーク６は所望の形状に加工される。As described above, based on the control signal of the numerical controller 2, the XY table 5 is moved by the servo motors 3 and 4, and the wire is fed while water is injected from the injection nozzle 18,
Intermittent discharge is performed between the wire and the work 6 to process the work. When the intermittent discharge is performed, the surface of the work 6 is vaporized and melted, and the work 6 is processed into a desired shape.
次に、本発明の動作をフローチャートを用いて説明す
る。第１図は本発明のワイヤカット放電加工機の断線修
復方法のフローチャートを示す図である。図において、
Ｓに続く数値はステップ番号を示す。Next, the operation of the present invention will be described using a flowchart. FIG. 1 is a flowchart showing a method for repairing a disconnection of a wire-cut electric discharge machine according to the present invention. In the figure,
The numerical value following S indicates the step number.
〔S1〕加工開始点において自動ワイヤ結線機構でワイヤ
を結線する。[S1] At the processing start point, wires are connected by an automatic wire connection mechanism.
〔S2〕加工条件を断線点復帰時の放電条件に設定する。
即ち、一度加工した加工済み経路を再度放電状態で移動
するにふさわしい加工条件を選択し、機械側に出力す
る。この加工条件は断線時の放電電流よりも小さい放電
電流値であり、加工くずを除去できる程度の放電条件で
ある。実際の加工条件はワイヤの材質、直径、ワイヤの
張力、送行速度、加工液比抵抗、加工液注水量、ガイド
−ワーク間距離等を考慮して決定する。[S2] The processing conditions are set to the discharge conditions at the time of return to the disconnection point.
That is, processing conditions suitable for moving the processed path once again in the discharge state are selected and output to the machine side. This machining condition is a discharge current value smaller than the discharge current at the time of disconnection, and is a discharge condition that can remove machining waste. The actual processing conditions are determined in consideration of the wire material, diameter, wire tension, feed speed, working fluid specific resistance, working fluid injection amount, guide-work distance, and the like.
〔S3〕S2で設定された放電条件で放電を開始する。[S3] Discharge starts under the discharge conditions set in S2.
〔S4〕加工済み経路に沿ってXYテーブルを移動させ、ワ
イヤを断線点位置まで移動させる。この時の移動はサー
ボ送りモードで移動させる。[S4] The XY table is moved along the processed path, and the wire is moved to the position of the disconnection point. The movement at this time is performed in the servo feed mode.
〔S5〕ワイヤが断線点に到達したかどうか判定する。到
達した場合はS6へ、到達していない場合はS4へ戻り、ワ
イヤを断線点位置まで移動させる。[S5] It is determined whether the wire has reached the breaking point. If it has arrived, return to S6, otherwise return to S4, and move the wire to the break point position.
〔S6〕S5でワイヤが断線点に到達したので、S2で設定さ
れた加工条件を断線前の加工していた時の加工条件に戻
す。[S6] Since the wire has reached the disconnection point in S5, the processing conditions set in S2 are returned to the processing conditions at the time of processing before disconnection.
〔S7〕断線前の加工条件にて再び放電加工を開始する。[S7] Electric discharge machining is started again under the machining conditions before disconnection.
本実施例のように加工時よりも小さな放電電流の放電
状態で復帰させることによって、歪んだワークに対して
はその歪みを修正するような加工が行われ、また、加工
くずに対してはそれを放電によって除去することができ
るので、ワイヤが再度断線することはない。また、一旦
加工の終了した加工済み経路に沿って放電状態を維持し
ながら復帰するので高速に断線位置に復帰することがで
きる。By returning to a discharge state with a smaller discharge current than during processing as in the present embodiment, processing is performed to correct the distortion for a distorted work, and the processing is performed for processing waste. Can be removed by electric discharge, so that the wire does not break again. In addition, since the return is performed while maintaining the discharge state along the processed path once the processing is completed, it is possible to quickly return to the disconnection position.
以上説明したように本発明によれば、ワイヤ断線時に
ワイヤを結線後、加工くずを除去できる程度の断線点復
帰時の放電条件に設定して、加工実行状態で断線位置に
戻るようにしたので、加工くずを除去でき、ワークの歪
みを修正できる。As described above, according to the present invention, after the wire is connected at the time of wire disconnection, the discharge condition at the time of the disconnection point return is set to such an extent that machining waste can be removed, so that the wire is returned to the disconnection position in the machining execution state. , Can remove machining debris and correct the distortion of the work.
また、ワイヤが再度断線することなく、高速に断線位
置に復帰させることができる。Further, the wire can be quickly returned to the disconnection position without disconnection of the wire again.
【図面の簡単な説明】 第１図は本発明のワイヤカット放電加工機の断線修復方
法のフローチャートを示す図、 第２図は本発明のワイヤカット放電加工機の概略構成を
示す図である。 １……加工指令テープ ２……数値制御装置（CNC） ３、４……サーボモータ ５……XYテーブル ６……ワーク ７……上部ワイヤガイド ８……ブレーキ ９……送り出しリール 10……下部ワイヤガイド 11……ワイヤ送り用ローラ 12……ワイヤ巻き取りリール 13……給電子 14……加工電源 15……放電制御手段 16……開閉スイッチ 17……加工液処理槽 18……噴射ノズルBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a flowchart of a method for repairing a disconnection of a wire-cut electric discharge machine according to the present invention, and FIG. 2 is a view showing a schematic configuration of the wire-cut electric discharge machine according to the present invention. 1 Processing tape 2 Numerical control device (CNC) 3 4 Servo motor 5 XY table 6 Work 7 Upper wire guide 8 Brake 9 Delivery reel 10 Lower Wire guide 11 Wire feed roller 12 Wire take-up reel 13 Electric supply 14 Machining power supply 15 Discharge control means 16 Open / close switch 17 Machining fluid treatment tank 18 Spray nozzle
Claims (2)
を結線後に断線位置に復帰させるワイヤカット放電加工
機の断線修復方法において、 結線後の加工条件を断線点復帰時の放電条件に設定し、
加工実行状態で前記ワイヤを前記加工経路に沿って前記
断線位置まで復帰させることを特徴とするワイヤカット
放電加工機の断線修復方法。In a method for repairing a disconnection of a wire-cut electric discharge machine in which a broken wire is returned to a disconnection position after connection in a machining path of an electric discharge machining, a machining condition after the connection is set to a discharge condition for returning to a disconnection point. ,
A method for repairing a disconnection of a wire cut electric discharge machine, wherein the wire is returned to the disconnection position along the machining path in a machining execution state.
記放電条件を前記断線前の放電条件に戻し、加工を再開
することを特徴とする特許請求の範囲第１項記載のワイ
ヤカット放電加工機の断線修復方法。2. The wire-cut electric discharge machining according to claim 1, wherein after the wire returns to the disconnection position, the discharge condition is returned to the discharge condition before the disconnection, and machining is restarted. How to repair machine disconnection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21983089A JP2644341B2 (en) | 1989-08-25 | 1989-08-25 | Repair method for disconnection of wire-cut electric discharge machine |
| PCT/JP1990/001026 WO1991002617A1 (en) | 1989-08-25 | 1990-08-10 | Method of repairing broken wire on wire cut electric spark machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21983089A JP2644341B2 (en) | 1989-08-25 | 1989-08-25 | Repair method for disconnection of wire-cut electric discharge machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0386428A JPH0386428A (en) | 1991-04-11 |
| JP2644341B2 true JP2644341B2 (en) | 1997-08-25 |
Family
ID=16741713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21983089A Expired - Fee Related JP2644341B2 (en) | 1989-08-25 | 1989-08-25 | Repair method for disconnection of wire-cut electric discharge machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2644341B2 (en) |
| WO (1) | WO1991002617A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI564133B (en) * | 2014-06-23 | 2017-01-01 | 綠能科技股份有限公司 | Broken wire processing device and broken wire processing method |
| JP6235531B2 (en) * | 2014-08-11 | 2017-11-22 | ファナック株式会社 | Wire electric discharge machine with a function to move from an arbitrary retreat position in an electric discharge state and return to an interruption position |
| CN116922594B (en) * | 2023-07-18 | 2024-04-02 | 江苏双晶新能源科技有限公司 | Cutting method for reducing chromatic aberration caused by bonding wires after breakage of crystalline silicon slice |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60108224A (en) * | 1983-11-17 | 1985-06-13 | Mitsubishi Electric Corp | Wire electric-discharge machining device |
| JPS61293724A (en) * | 1985-06-21 | 1986-12-24 | Amada Co Ltd | Method for re-starting wire cut electric discharge machine |
| JPH0673776B2 (en) * | 1988-03-01 | 1994-09-21 | 三菱電機株式会社 | Method for controlling disconnection recovery of wire electric discharge machine |
-
1989
- 1989-08-25 JP JP21983089A patent/JP2644341B2/en not_active Expired - Fee Related
-
1990
- 1990-08-10 WO PCT/JP1990/001026 patent/WO1991002617A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0386428A (en) | 1991-04-11 |
| WO1991002617A1 (en) | 1991-03-07 |
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