JPS61131827A - Electric-discharge machine - Google Patents

Electric-discharge machine

Info

Publication number
JPS61131827A
JPS61131827A JP24878984A JP24878984A JPS61131827A JP S61131827 A JPS61131827 A JP S61131827A JP 24878984 A JP24878984 A JP 24878984A JP 24878984 A JP24878984 A JP 24878984A JP S61131827 A JPS61131827 A JP S61131827A
Authority
JP
Japan
Prior art keywords
machining
image
imaging device
discharge
image pickup
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
JP24878984A
Other languages
Japanese (ja)
Inventor
Kiyoshi Inoue
潔 井上
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.)
Inoue Japax Research Inc
Original Assignee
Inoue Japax Research Inc
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 Inoue Japax Research Inc filed Critical Inoue Japax Research Inc
Priority to JP24878984A priority Critical patent/JPS61131827A/en
Publication of JPS61131827A publication Critical patent/JPS61131827A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING 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
    • B23H1/00Electrical 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

PURPOSE:To make a clear-cut image of a work securable, by connecting a dielectric fluid feed pipe to a space between a lens holding cylinder and a hood, while spouting a transparent dielectric fluid to a machined part, in case of an electric-discharge machine provided with an image pickup device and a display unit. CONSTITUTION:When a voltage pulse is impressed in a space between an electrode 3 and a work 28 and electric-discharge machining is started, image pickup devices 22 and 23 and a display unit 36 are all operated. Irradiators 24 and 25 at each tip of these image pickup devices 22 and 23 irradiate a peripheral contour part of the work 28, whereby these image pickup devices 22 and 23 takes a picture of a machined part or the like, and the signal is projected on a screen of the display unit 36. In addition, a fresh, transparent dielectric fluid is continuously spouted out of image taking opening parts 26a and 27a of cylinders 26 and 27. Accordingly, the dielectric fluid clouded in and round the machined part is pushed away from each front of these opening parts 16a and 27a, a clear-cut image at the machined part is observed through hoods 22a and 23a. When anything unusual occurs during operation, every part of a unit is controlled so that it is restorable to a good discharging state.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は放電加工装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to electrical discharge machining equipment.

〔従来の技術〕[Conventional technology]

放電加工装置は機械力を直接被加工体に作用させて加工
を行なう通常の機械加工と異なり、被加工体と電極を僅
かな間隙を保って対向させ、当該間隙に加工液を介在せ
しめつ\両者間に電圧パルスを印加し、その際に生じる
放電侵蝕現象を利用して加工を行なう非接触加工である
Unlike normal machining, in which mechanical force is applied directly to the workpiece to perform machining, electrical discharge machining equipment places the workpiece and electrode facing each other with a small gap maintained, and machining fluid is interposed in the gap. This is a non-contact machining process in which a voltage pulse is applied between the two and the discharge erosion phenomenon that occurs is used for machining.

放電加工を行なう際には、加工の目的や条件、被加工体
の材質等を考慮して電極の材質を選定し、被加工体の形
状又は製品等の目的に適合した加工条件、即ち、電源電
圧、電圧パルス又は放電電流パルスの持続時間、その休
止時間、放電電流の振幅、更には加工液の液圧等の供給
介在のさせ方を、要求される加工面粗さ、電極消耗比及
び加工速度等を考慮して選択設定し加工を行なうもので
ある。
When performing electric discharge machining, select the electrode material taking into account the purpose and conditions of the machining, the material of the workpiece, etc., and select the machining conditions that match the shape of the workpiece or the purpose of the product, etc. The voltage, the duration of the voltage pulse or the discharge current pulse, the rest time, the amplitude of the discharge current, and the method of supply intervention such as the hydraulic pressure of the machining fluid, the required machined surface roughness, the electrode wear ratio, and the machining process. Machining is performed by selecting and setting taking into account speed and other factors.

而して、放電加工が良好に行なわれている時には、放電
は電極と被加工体との間の加工間隙全体に略均一に分布
して行なわれるが、上記被加工体と電極間の距離が所定
の値に保たれなくなったり或いは加工間隙に介在する加
工液の量や性状等が変動すると、電極と被加工体との間
の加工間隙に於ける放電が各個不整になると共に、加工
間隙全体に均一に分布して行なわれなくなり、上記電極
と被加工体との間の放電が一箇所に集中し、更にはこれ
がアーク等の異常放電に移行することになる。
When electrical discharge machining is performed well, the electrical discharge is distributed almost uniformly over the entire machining gap between the electrode and the workpiece, but when the distance between the workpiece and the electrode is If a predetermined value is no longer maintained, or if the amount or properties of the machining fluid present in the machining gap change, the discharge in the machining gap between the electrode and the workpiece becomes irregular, and the entire machining gap becomes uneven. Therefore, the discharge between the electrode and the workpiece is concentrated in one place, and furthermore, this leads to an abnormal discharge such as an arc.

上記の如(、放電が正常に行なわれなくなると、加工速
度が低下し、更に電極消耗や加工面粗さ等の加工性能も
劣化し、加工が円滑に行なわれなくなるばかりでなく、
場合によっては高価な電極又は被加工体を破損してしま
うことになる。
As mentioned above, if electric discharge is not performed normally, the machining speed will decrease, and machining performance such as electrode wear and machined surface roughness will deteriorate, and machining will not only not be carried out smoothly, but also
In some cases, the expensive electrode or workpiece may be damaged.

而して、従来この放電の状態若し、(はその良否は、放
電電圧又は放電電流等を計測することにより判別されて
いたが、この判別は困難であった。
Conventionally, the state of this discharge, or whether it is good or bad, has been determined by measuring the discharge voltage or discharge current, but this determination has been difficult.

特に、有害な放電が発生する際には、それに先立って放
電の集中発生が生じるが、その前駆的集中放電の発生を
早期に発見することは困難であった。
In particular, when a harmful discharge occurs, a concentrated discharge occurs prior to the occurrence, but it has been difficult to detect the occurrence of the precursor concentrated discharge at an early stage.

かかる問題点を解決するため、本発明者は先に特願昭5
9−183672号に於て、放・重加工時に電極と相対
向した被加工体の加工部分や、両者によって形成される
加工間隙の外周輪郭線部分を拡大又は縮小してディスプ
レイ装置に映し出すと共に、上記加工部分や加工間隙の
外周輪郭線部分の放電状態を肉眼又は適宜の自動判別装
置で判別し、電極と被加工体との間の各個放電が所定以
上不整になるとか、加工間隙に適宜分散した状態で行な
われなくなった際或いは各個放電の色調やスペクトル等
が所定以上変化するとか、特徴ある色調やスペクトル等
を検出した際には、直ちに装置の各部を制御し、正常な
放電が行なわれるように調整して、異常放電等によって
電極及び被加工体等が破損されるのを未然に防止するこ
とができる放電加工装置を開示した。
In order to solve this problem, the present inventor first filed a patent application in 1973.
In No. 9-183672, the machined part of the workpiece facing the electrode during free-loading and heavy-duty machining, and the outer peripheral outline of the machining gap formed by both are enlarged or reduced and displayed on a display device, Determine the state of electrical discharge in the above-mentioned machining area and the outer peripheral contour of the machining gap with the naked eye or with an appropriate automatic discrimination device, and determine whether each individual discharge between the electrode and the workpiece is irregular by more than a predetermined level, or if it is dispersed as appropriate in the machining gap. When the discharge is no longer carried out in the same state, or when the color tone or spectrum of each individual discharge changes more than a predetermined value, or when a characteristic color tone or spectrum is detected, each part of the device is immediately controlled to ensure normal discharge. Disclosed is an electric discharge machining apparatus that can be adjusted to prevent damage to an electrode, a workpiece, etc. due to abnormal discharge or the like.

即ち、上記特願昭59−183672号に於て開示され
た発明の要旨とするところは、放電加工装置に於て、放
電加工時に電極と相対向した被加工体の加工部分、特に
両者によって形成される加工間隙の外周輪郭線の所望部
分を照射する光源と、上記部分や加工間隙の所望外周輪
郭線部分を撮影する撮像装置と、上記撮像装置からの信
号を画面上に映し出すディスプレイ装置を設けた点にあ
り、これによって、放電加工時に電極と相対向した被加
工体の加工部分や加工間隙゛の所望外周輪郭線部分をデ
ィスプレイ装置の画面上に鮮明に映し出し、放電の分布
状態、ガスや加工屑の発生状態、或いは更に放電の色調
やスペクトル等を常時乃至は適宜肉眼又は適宜の機器で
検出、判別することにより、集中放電又はアーク放電等
の異常放電やその前駆現象又は前駆状態等を直ちに発見
すると共に、上記異常放電によって高価な電極又は被加
工体等が破損されるのを防止しようとするものであった
That is, the gist of the invention disclosed in the above Japanese Patent Application No. 59-183672 is that, in an electrical discharge machining device, the machined part of the workpiece facing the electrode during electrical discharge machining, especially the part formed by both. A light source for illuminating a desired portion of the outer peripheral contour of the machining gap to be processed, an imaging device for photographing the portion and the desired outer peripheral contour of the machining gap, and a display device for projecting signals from the imaging device on a screen. As a result, the machined part of the workpiece facing the electrode during electrical discharge machining and the desired outer contour of the machining gap can be clearly displayed on the screen of the display device, and the state of discharge distribution, gas and By constantly detecting and determining the state of production of machining debris, or even the color tone and spectrum of discharge, with the naked eye or with appropriate equipment, abnormal discharges such as concentrated discharges or arc discharges, their precursor phenomena, or precursor conditions can be detected. The aim was to detect this problem immediately and to prevent damage to expensive electrodes, workpieces, etc. due to the above-mentioned abnormal discharge.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

而して、上記の姶き撮像装置とディスプレイ装置を備え
た放電加工装置にあっても、加工部分近(の加工液が加
工屑或いは加工時に発生するガス等によって汚濁してく
ると鮮明な映像が得られなくなるという問題があった。
Even with electrical discharge machining equipment equipped with the above-mentioned imaging device and display device, if the machining fluid near the machining area becomes contaminated with machining debris or gas generated during machining, clear images may not be obtained. There was a problem that it became impossible to obtain.

本発明は、かかる問題点を解決するためなされたもので
あり、その目的とするところは、加工液の汚染に拘わら
ず良好且つ鮮明な映像が得られるように構成した放電加
工装置を提供することにある。
The present invention has been made to solve these problems, and its purpose is to provide an electric discharge machining apparatus configured to obtain good and clear images regardless of machining fluid contamination. It is in.

〔問題点を解決するための手段〕[Means for solving problems]

而して、上記の目的は、撮像装置と、当該偶像装置から
の信号を画面上に映し出すディスプレイ装置を備えた放
電加工装置に於て、撮影用の開口部を具備し少なくとも
上記撮像装置のレンズ保持筒又はフードを収容する筒体
を設け、この筒体と上記レンズ保持筒又はフードとの間
に加工液供給管を接続することによって達成される。
The above object is to provide an electrical discharge machining device equipped with an imaging device and a display device that projects signals from the idol device on a screen, and which is provided with an opening for photographing and at least the lens of the imaging device. This is achieved by providing a cylindrical body that accommodates a holding cylinder or hood, and connecting a machining liquid supply pipe between this cylindrical body and the lens holding cylinder or hood.

〔作  用〕[For production]

上記の如き構成であると、上記筒体の撮影用の開口部か
ら加工部分に向けて新鮮且つ透明な加工液が噴出され、
これにより上記筒体内に収容された上記撮像装置のレン
ズ保持筒又はフードを通じて、撮像装置内に加工部分の
鮮明な影像が形成されるものである。
With the above configuration, fresh and transparent machining liquid is ejected from the photography opening of the cylinder toward the machining part,
Thereby, a clear image of the processed portion is formed in the imaging device through the lens holding tube or hood of the imaging device housed in the cylinder.

〔実 施 例〕〔Example〕

以下、図面に示した実施例を参照しつ\本発明の詳細を
具体的に説明する。
Hereinafter, details of the present invention will be specifically explained with reference to embodiments shown in the drawings.

第1図は本発明に係る放電加工装置の一実施例を示す説
明図、第2図はその撮像装置部分の拡大説明図、第3図
は本発明に係る放電加工装置の他の実施例を示す説明図
である。
FIG. 1 is an explanatory diagram showing one embodiment of the electrical discharge machining apparatus according to the present invention, FIG. 2 is an enlarged explanatory diagram of the imaging device portion thereof, and FIG. 3 is an explanatory diagram showing another embodiment of the electrical discharge machining apparatus according to the present invention. FIG.

先ず、第1図及び第2図について説明する。First, FIG. 1 and FIG. 2 will be explained.

第1図及び第2図中、1は放電加工装置の加工機本体、
2はベッド等に立てられたカラムに昇降送り位置決め又
は送り制御可能に設けられる加工ヘッド、3は電橋、4
は円形又はこれに類する形状に形成された加工タンク、
5は上記加工タンク4の外周壁面上に取り付けられたレ
ール、6及び7は上記レール5上を走行する走行台車、
8及び9は上記それぞれの走行台車6及び7に取り付け
られたモータ、10及び11は上記それぞれのモータ8
及び9のシャツ1−8a及び9aに取り付けられた駆動
輪、12及び13はそれぞれの走行台車6及び7に形成
されたアーム6a及び7aに回動自在に支承された補助
輪、14及び15はガイド輪、16及びI7は上記それ
ぞれの走行台車6及び7に取り付けられた支持アーム、
18及び19は蝶ねじ、20及び21は上記夫々の支持
アーム16及び17に上下の位置の調整が可能に取り付
けられる共に、その先端部分にそれぞれ撮像装置22及
び詔を取り付けたロッド、22a及び23aは上記撮像
装置22及び詔のレンズ保持筒又はフード(以下単に「
フード」という。)、24及び5は上記フード22a及
び23aのそれぞれの先端部分に取り付けられた照射装
置、あ及び釘は上記撮像装置のフード22a及び23a
のそれぞれを囲繞する形で収容するよう設けられた筒体
、妬は上記加工タンク4内に収容された被加工体、四及
び30は上記加工タンク4をX軸及びY軸方向に移動さ
せるクロススライドテーブル、31は上記クロススライ
ドテーブル29上に搭載され、上記加工タンク4に回転
運動を与えるターンテーブル、32は上記クロススライ
ドテーブル29及び30が搭載される放電加工機本体1
のベッド上の基台、33、あ及び35は上記クロススラ
イドテーブル四、30及びターンテーブル31を駆動す
るモータ、36はディスプレイ 。
In Figures 1 and 2, 1 is the main body of the electrical discharge machining device;
2 is a processing head that is installed on a column set up on a bed or the like so that it can be moved up and down to position or control the feed; 3 is an electric bridge; 4
is a processed tank formed into a circular or similar shape,
5 is a rail attached to the outer peripheral wall of the processing tank 4; 6 and 7 are running carts that run on the rail 5;
8 and 9 are motors attached to the respective traveling carts 6 and 7, and 10 and 11 are the respective motors 8.
and 9, drive wheels attached to the shirts 1-8a and 9a, 12 and 13 are auxiliary wheels rotatably supported on arms 6a and 7a formed on the respective traveling carts 6 and 7, and 14 and 15 are auxiliary wheels. Guide wheels 16 and I7 are support arms attached to the respective traveling carts 6 and 7,
Reference numerals 18 and 19 denote thumbscrews; 20 and 21 are rods 22a and 23a that are attached to the above-mentioned support arms 16 and 17 so as to be able to adjust their vertical positions; refers to the imaging device 22 and the lens holding cylinder or hood (hereinafter simply "
It's called "Food." ), 24 and 5 are irradiation devices attached to the tips of the hoods 22a and 23a, respectively, and a and nails are the hoods 22a and 23a of the imaging device.
4 and 30 are crosses for moving the processing tank 4 in the X-axis and Y-axis directions. A slide table 31 is a turntable that is mounted on the cross slide table 29 and gives rotational motion to the machining tank 4, and 32 is an electrical discharge machine main body 1 on which the cross slide tables 29 and 30 are mounted.
33, 35, and 35 are motors for driving the cross slide tables 4, 30 and turntable 31, and 36 is a display.

装置である。It is a device.

而して、被加工体四は加工タンク4内に収容されると共
に、上記加工タンク4を搭載しているターンテーブル3
1及びクロススライドテーブル29.30によって回転
運動及びX軸及びY軸方向への加工送り運動が与えられ
る。
Thus, the workpiece 4 is accommodated in the processing tank 4, and the turntable 3 on which the processing tank 4 is mounted is mounted.
1 and cross slide tables 29 and 30 provide rotational movement and machining feed movement in the X-axis and Y-axis directions.

加工タンク4は円形又はこれに類する形状に形成されて
おり、その外周壁面上にはレール5が取り付けられ、上
記レール5にはその上を移動する走行台車6及び7が搭
載されている。
The processing tank 4 is formed into a circular or similar shape, and a rail 5 is attached to the outer peripheral wall surface of the processing tank 4. On the rail 5, traveling carts 6 and 7 are mounted which move on the rail 5.

上記それぞれの走行台車6及び7にはモータ8及び9が
取り付けられている。そして、上記走行台車6及び7の
ガイド輪14及び15は、レール5の上面に乗り、駆動
輪10及び11と補助輪12及び13か上記レール5を
両側面から挾み込み、上記走行台車6及び7は上記モー
タ8及び9の回転に伴って上記レール5上を走行する。
Motors 8 and 9 are attached to the respective traveling carts 6 and 7. The guide wheels 14 and 15 of the traveling bogies 6 and 7 ride on the upper surface of the rail 5, and the driving wheels 10 and 11 and the auxiliary wheels 12 and 13 sandwich the rail 5 from both sides. and 7 run on the rail 5 as the motors 8 and 9 rotate.

また、上記走行台車6及び7には支持アーム16及び1
7が取り付けられてお、す、上記支持アーム16及び1
7にはロッド20及び21が蝶ねじ18及び19によよ
って固定されている。そして、上記蝶ねじ18及び19
を弛めることにより、上記ロッド20及び21の上下の
位置の調整が行なえる。また、上記ロッド20及び21
の先端部分には、撮像装置22及び23が適宜の手段に
より位置及び向きの調整が可能なように取り付けられて
いる。
Further, the traveling carts 6 and 7 are provided with support arms 16 and 1.
7 is attached to the support arms 16 and 1.
Rods 20 and 21 are fixed to 7 by thumbscrews 18 and 19. And the thumbscrews 18 and 19
By loosening the rods 20 and 21, the vertical positions of the rods 20 and 21 can be adjusted. In addition, the rods 20 and 21
Imaging devices 22 and 23 are attached to the distal end portion of the image pickup device 22 and 23 so that their positions and orientations can be adjusted by appropriate means.

なお、上記各部の動作は予め定められたプログ  。Note that the operations of each of the above parts are based on a predetermined program.

ラムに従って図示されていない数値制御装置等によって
一括して制御が行なわれるように構成されている。
The system is configured such that control is performed at once by a numerical control device or the like (not shown) according to the RAM.

而して、撮像装置22と23、照射装置24と25、筒
体26と釘はそれぞれ同様の構成であるので、撮像装置
22例の構成を第2図を参照しつ\いま少し詳しく説明
すれば、撮像装置22のレンズ取付は口22bにフード
22aが嵌め込まれる形で取り付けられ、フード先端内
部には加工液の侵入を防止するためのガラス板22cが
水田に取り付けられている。フード先端の外周壁面には
、別途設けたレーザ光又はハロゲン光等の光源からの光
をオプチカルファイバ等を通じて導入し、これを被加工
体28と電極3が対向して形成される加工間隙の外周輪
郭線部分に向けて照射する照射装置グが取り付けられて
いる。また、加工中は、筒体26の側壁に設けた加工液
供給管26bに接続されたホース26cを通じて筒体妬
内へ清浄な加工液が導入され、当該加工液は筒体26の
撮影用の開口部を兼ねた開口部26aがら加工部分へ向
けて噴出される。
Since the imaging devices 22 and 23, the irradiation devices 24 and 25, and the cylinder body 26 and the nail have the same configuration, the configuration of the imaging device 22 will now be explained in detail with reference to FIG. For example, the lens of the imaging device 22 is attached by fitting a hood 22a into the opening 22b, and a glass plate 22c is attached to the rice field inside the tip of the hood to prevent processing fluid from entering. Light from a separately provided light source such as a laser beam or halogen light is introduced into the outer circumferential wall surface of the tip of the hood through an optical fiber, etc., and is applied to the outer circumference of the machining gap formed by the workpiece 28 and the electrode 3 facing each other. An irradiation device is attached that irradiates the outline area. During machining, clean machining fluid is introduced into the cylindrical body through a hose 26c connected to a machining fluid supply pipe 26b provided on the side wall of the cylindrical body 26, and the machining fluid is used for photographing the cylindrical body 26. The liquid is ejected toward the processed portion through the opening 26a which also serves as an opening.

而して、本発明に係る放電加工装置によって加工が行な
われる際には、電極3と被加工体四のとの間に図示され
ていな電源回路から所定の電圧パルスが印加されて放電
加工が開始されると、予め位置決め設定された撮像装置
22、詔及びディスプレイ装置36が作動し、或いは更
に必要ならば、加工間隙の外周輪郭線部分の所望の局部
、又は輪郭線部分に沿って連続的に検知を行なうために
、加工タンク4の外周壁面上に取り付けられたレール5
上を2台の走行台車6及び7が所定のスピードで一定の
方向又は位置に向かって走行を開始し、何れにしても、
撮像装置22及び23の先端の外周壁面に取り付けられ
た照射装置24及び25が被加工体28の所望加工部分
や加工間隙の所望外周輪郭線部分を照射し、上記加工部
分をti像管22及び詔が撮影し、上記加工部分等を↑
最像装置22及び詔が撮影し、その信号がディスプレイ
装置36に送られて上記ディスプレイ装置36の画面上
に映し出される。
When machining is performed by the electric discharge machining apparatus according to the present invention, a predetermined voltage pulse is applied between the electrode 3 and the workpiece 4 from a power supply circuit (not shown) to perform electric discharge machining. Once started, the pre-positioned imaging device 22, ejector and display device 36 are actuated or, if necessary, are continuously scanned at a desired localized portion of the peripheral contour portion of the machining gap or along the contour portion. In order to perform detection, a rail 5 installed on the outer peripheral wall of the processing tank 4
Two traveling carts 6 and 7 start traveling at a predetermined speed towards a certain direction or position, and in any case,
Irradiation devices 24 and 25 attached to the outer circumferential wall surfaces at the tips of the imaging devices 22 and 23 irradiate a desired processing portion of the workpiece 28 and a desired outer peripheral contour portion of the processing gap, and the processing portions are exposed to the TI image tubes 22 and 23. Photographed by Yusho, the above-mentioned processed parts etc. ↑
The most image device 22 and the edict take pictures, and the signals are sent to the display device 36 and displayed on the screen of the display device 36.

而して、放電加工時には被加工体28の加工部分や加工
間隙の外周輪郭線部分が上記照射装置24及び25によ
って照射されると共に、上記筒体26及び27の撮影用
の開口部26a及び27aからは継続して新鮮且つ透明
な加工液が噴出される。このため、加工屑等によって汚
濁した加工部分近くの加工液は、少なくとも開口部26
a及び27aの正面からは押しのけられ、筒体内に収容
されたフード22a及び23aを通じて、加工部分の鮮
明な映像が観察されるものである。
During electric discharge machining, the machining portion of the workpiece 28 and the outer peripheral contour portion of the machining gap are irradiated by the irradiation devices 24 and 25, and the photographing openings 26a and 27a of the cylindrical bodies 26 and 27 are illuminated. Fresh and clear machining fluid is continuously spouted from the machine. Therefore, the machining liquid near the machining part contaminated with machining debris etc. is removed from at least the opening 26.
A clear image of the processed portion can be observed through the hoods 22a and 23a, which are pushed away from the front of the hoods a and 27a and housed in the cylinder.

従って、加工部分近くの加工液が加工屑等によって汚濁
しても上記撮像装置22及び詔は上記被加工体28の所
望加工部分等の映像をディスプレイ装置36の画面上に
鮮明に映し出すことができる。そして、加工中に上記電
極3と被加工体舘の間の加。
Therefore, even if the machining liquid near the machining part becomes contaminated with machining debris etc., the imaging device 22 and the edict can clearly display an image of the desired machining part of the workpiece 28 on the screen of the display device 36. . During machining, the force between the electrode 3 and the workpiece body is increased.

工間隙に略均一に分布した状態で放電が均一に行なわれ
なくなったり又はアーク等の異常放電が生じた際には、
これを目視検知や自動検知により検出判別して直ちに装
置の各部を制御して良好な放電状態に戻すことができる
のである。
If the discharge is not uniformly distributed in the work gap or if an abnormal discharge such as an arc occurs,
This can be detected and determined by visual detection or automatic detection, and each part of the device can be immediately controlled to return to a good discharge state.

なお、上記撮像装置22及び23は耐油型Φ構造のもの
を使用するのが望ましい。
It is preferable that the image pickup devices 22 and 23 have an oil-resistant Φ structure.

また、ディスプレイ装置36は、必要に応じてその映像
を拡大したり縮小したりすることが可能なものであるこ
とが望ましい。
Furthermore, it is desirable that the display device 36 be capable of enlarging or reducing the image as necessary.

次に、第3図により、ワイヤカット形式の放電加工装置
に本発明を適用した場合の実施例について説明する。
Next, an embodiment in which the present invention is applied to a wire-cut electric discharge machining apparatus will be described with reference to FIG.

第3図中、第1図及び第2図に付した番号と同一の番号
を付したものは同一の構成要素を示しており、37は加
工ヘソド2に代えてカラム等に取り付けた上部アーム3
8に取り付けられたノズル装置、39はノズルホルダ、
40はノズル、41は袋ナンド、42はガイドホルダ4
3に固定して設けられたダイス、44及び45は給電ピ
ン、46はスプリング、47はゴム弁、48は加工液供
給孔、49はモータが停止しているときはブーレキとし
ての作用をするブレーキローラ兼キャプスタン、50及
び51はピンチローラ、52はキャプスタン、53はワ
イヤ電極である。
In FIG. 3, the same numbers as those in FIGS. 1 and 2 indicate the same components, and 37 is an upper arm 3 attached to a column etc. in place of the processing head 2.
8 is a nozzle device attached, 39 is a nozzle holder,
40 is a nozzle, 41 is a bag nand, 42 is a guide holder 4
3 is a fixed die, 44 and 45 are power supply pins, 46 is a spring, 47 is a rubber valve, 48 is a machining fluid supply hole, and 49 is a brake that acts as a brake when the motor is stopped. 50 and 51 are pinch rollers, 52 is a capstan, and 53 is a wire electrode.

而して、ノズルホルダ39は取付はフランジ39a及び
ノズル室39bを有し、上記ノズルホルダ39内にノズ
ル40が摺動自在に嵌め込まれ、更にスプリング46と
袋ナツト41が順次取り付けら゛れる。然る後、このノ
ズル装置37は取付はフランジ39aと図示されていな
い取付はボルト等により上部アーム38に取り付けられ
る。
The nozzle holder 39 has a mounting flange 39a and a nozzle chamber 39b, and the nozzle 40 is slidably fitted into the nozzle holder 39, and a spring 46 and a cap nut 41 are sequentially mounted. Thereafter, this nozzle device 37 is attached to the upper arm 38 using a flange 39a and bolts (not shown).

ワイヤ電極53は図示されていない電極供給装置から供
給され、ブレーキローラ兼キャプスタン49とピンチロ
ーラ50間を通過し、ノズルホルダ39内で給電ピン4
4及び45によって被加工体28との間に所定の電圧パ
ルスが供給され、ダイス42を経てピンチローラ51と
キャプスタン52の間を経て図示されていな電極回収装
置に回収されるように構成されている。
The wire electrode 53 is supplied from an electrode supply device (not shown), passes between the brake roller/capstan 49 and the pinch roller 50, and is connected to the power supply pin 4 within the nozzle holder 39.
4 and 45, a predetermined voltage pulse is supplied between the workpiece 28, and the voltage pulse is collected through the die 42, between the pinch roller 51 and the capstan 52, and into an electrode collection device (not shown). ing.

上記ワイヤ電極53と被加工体28間には、図示されて
いな電源装置から電圧パルス又は放電パルスのパルス幅
、放電電流振幅又は電圧パルス間体幅等が所定の値に制
御された電圧パルスが印加されて放電加工が行なわれる
Between the wire electrode 53 and the workpiece 28, a voltage pulse or a voltage pulse whose pulse width, discharge current amplitude, voltage pulse width, etc. are controlled to predetermined values is supplied from a power supply device (not shown). Electrical discharge machining is performed by applying the voltage.

而して、放電加工が開始すると、予め位置決め設定され
た撮像装置22、お及びディスプレイ装置36が作動し
、或いは更に必要ならば加工間隙の外周輪郭線部分の所
望の局部、又は輪郭線部分に沿って連続的に検知を行な
うために、加工タンク4の外周壁面上に取り付けられた
レールS上を2台の走行台車6及び7カ5所定のスピー
ドで一定の方向又は位置に向かって走行を開始し、撮像
装置22及び詔に取り付けら、れたフード22a及び2
3aの先端部分に取り付けられた照射装置24及び25
によってワイヤ電極53と被加工体28との加工間隙部
分が照射されると共に、筒体26及び27の先端の撮影
用の開口部26a及び27aから噴出される加工液によ
って汚濁した加工液は排除され、そのため、撮像装置2
2及び詔によって上記加工間隙部分の鮮明な映像が撮影
され、その映像信号がディスプレイ装置36に送られ、
上記ディスプレイ装置36の画面上に鮮明に映し出され
る。
When electrical discharge machining starts, the imaging device 22 and the display device 36, which have been positioned in advance, are operated, or if necessary, a desired local part of the outer circumferential contour of the machining gap or the contour line is moved. In order to continuously perform detection along the processing tank 4, two traveling carts 6 and 7 move toward a fixed direction or position at a predetermined speed on a rail S attached to the outer peripheral wall of the processing tank 4. The hoods 22a and 2 which are attached to the imaging device 22 and the
Irradiation devices 24 and 25 attached to the tip of 3a
The machining gap between the wire electrode 53 and the workpiece 28 is irradiated, and the machining fluid contaminated by the machining fluid ejected from the photographing openings 26a and 27a at the tips of the cylinders 26 and 27 is removed. , Therefore, the imaging device 2
2 and the edict, a clear image of the processing gap portion is taken, and the image signal is sent to the display device 36,
The image is clearly displayed on the screen of the display device 36.

〔発明の効果〕〔Effect of the invention〕

本発明は叙上の如く構成されるので、本発明によるとき
には、放電加工時に電極と相対向した被加工体の加工部
分、両者によって成形される加工間隙の所望外周輪郭線
部分又はワイヤ電極と被加工体の加工間隙部分を加工に
伴う加工液の汚濁に関係なくディスプレイ装置の画面上
に鮮明に映し出し、放電の状態や放電の色調、スペクト
ル等を常時乃至は適宜肉眼又は適宜の機器で検出判別し
つつ加工を行なうことができるので、集中放電又はアー
ク放電等の異常放電を未然に防止することができると共
に、上記異常放電によって高価な電極又は被加工体等が
破損されるのを防止することができるのである。
Since the present invention is configured as described above, according to the present invention, the machining portion of the workpiece facing the electrode during electric discharge machining, the desired outer peripheral contour portion of the machining gap formed by both, or the wire electrode and the machining portion formed by the two. The machining gap part of the workpiece is clearly displayed on the screen of the display device regardless of the contamination of the machining fluid caused by machining, and the discharge state, color tone, spectrum, etc. of the discharge can be detected and determined at any time or as needed with the naked eye or with an appropriate device. Since it is possible to perform machining while processing, it is possible to prevent abnormal discharges such as concentrated discharges or arc discharges, and also to prevent expensive electrodes or workpieces from being damaged by the abnormal discharges. This is possible.

なお、本発明は叙上の実施例に限定されるものではない
。即ち、例えば、本実施例に於ては走行台車を2台とし
たが走行台車の数は被加工体の大きさ及び加工形状等に
応じて適宜に増減し得るも。
Note that the present invention is not limited to the embodiments described above. That is, for example, in this embodiment, two traveling vehicles are used, but the number of traveling vehicles may be increased or decreased as appropriate depending on the size and shape of the workpiece.

のである。また、照射装置を撮像装置の先端部分に設け
たが、筒体先端に設けたり、或いは全く別個に設けても
よく、更に、上記照射装置はレーザ光又はハロゲン光に
限定されず、被加工体の加工部分や加工間隙の外周輪郭
線部分を充分に照射し得るものであれば他の公知の光源
が利用できるものである。また、上記には主として肉眼
による観察について述べたが、撮像装置の出力信号を繰
り返し更新しながら一時記録し、該記録信号から、例え
ば放電が加工面全体に均一に分布して発生しているか否
かを適宜の機器を用いて検出判別するように構成するこ
とが推奨され、その他、撮像装置の取り付は方法、その
ディスプレイの方法及び各部の制御の仕方等は本発明の
目的の範囲内で自由に設計変更できるものであって、本
発明はそれらの総てを包摂するものである。
It is. Further, although the irradiation device is provided at the tip of the imaging device, it may be provided at the tip of the cylindrical body, or it may be provided completely separately.Furthermore, the irradiation device is not limited to laser light or halogen light; Any other known light source can be used as long as it can sufficiently illuminate the processed portion and the outer circumferential contour of the processing gap. In addition, although the above description has mainly been about observation with the naked eye, it is also possible to temporarily record the output signal of the imaging device while repeatedly updating it, and check from the recorded signal whether, for example, electric discharge is occurring in a uniform distribution over the entire machined surface. It is recommended that the image pickup device be configured to be detected and discriminated using appropriate equipment.In addition, the method of mounting the imaging device, the method of displaying it, the method of controlling each part, etc. are within the scope of the present invention. The design can be changed freely, and the present invention encompasses all of them.

4、追加の関係 本発明は、本願出願人が先に昭和59年特許順第183
672号に於て開示した発明の構成に欠くことができな
い事項の全部をその構成に欠くことができない事項の主
要部としている発明であって、上記特許願に於て開示し
た発明と同一の目的を達成するものである。
4.Additional relationship The present invention was originally filed by the applicant in 1983 with Patent Order No. 183.
An invention in which all of the matters essential to the composition of the invention disclosed in No. 672 are the main parts of the composition, and which has the same purpose as the invention disclosed in the above patent application. The goal is to achieve the following.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に係る放電加工装置の一実施例を示す説
明図、第2図はその撮像装置部分の拡大説明図、第3図
は本発明に係る放電加工装置の他の実施例を示す説明図
である。 1−・−・−−一−・−・−・・・−・−加工機本体2
−−−−−−−・・・・−・−・−−−−−−・−・−
加工ヘッド3−一−−・−・・−一−−・−−−−−−
一−−−−−−−電極4−・−・・−・−−−−一〜−
−−−−・−・−−−一加エタンク5−−−−−−・・
・・−・−一−−−・−・−・−−−−レール6 、 
7−−−−−−−−−−−−−・−−一一一−−走行台
車8、 9.33.34.35−一−モータ10、11
・・−・−・−・−−−−−一−−一−−一駆動輪12
、13・−−一一−−−・・・・・−・・・・−補助輪
14. 15−−−−−−−−−−−−・・−−−−ガ
イド輪18、19−−−−−−−・−−一−−−−−・
−蝶ねじ20 、21−−−−−−−−−−−一・−−
−一−−−ロッド22、23−−−−・−−−−・・−
・−・−−−一−−撮像装置22a、 23a −−−
−−−−−−・−−−−一−・フード24.25−−・
−一−−−−−−−−−−−−・−照射装置26.27
・〜−−−−−・−−一一一−−−−−・−レンズ保持
筒又はフード26a 、 27a−・・−・−−−一−
−−−−−〜−撮影用の開口部26b、27b −−−
−・−−−−・−−−一一−−−加工液供給管26cm
−−−−・−−−−−−一−−−・−・−−−一加工液
供給ホース2B −−−−−−、−・−一−〜・・−・
−−−一−−・−被加工体四、30−・−・−−−−−
−−−−−−−一−・クロススライドテーブル31・−
−−−−−・−−−一一−−−−・−−−−−−−−一
ターンテーブル32−=−・−・−−−−−−・−・−
−−−−・−−−−一基台あ一一−−・−一−−−−−
−−−−−−・−m−−−・・−ディスプレイ装置37
−−−−−−・−・−・・−一−−−−・−−−−−−
一一ノズル装置38−−−−−−・−・・・−−一−−
・−−−一−−−−上部アーム39−−−−−−−−−
−・−・・−−−−・−−−一−−−−ノズルホルダ4
0−一−−−−・−・−−−一〜・・・−−−−・−−
−一一ノズル41−−−−−−・−・−一−−−−−−
−−−−−−−−−袋ナット42−−−−・−−−−一
−−−−−−−−−−−−−−−−−ダイス43− ・
−−一−−・−・・−・−・−一一−−−−ガイドホル
ダ44、45−−−−−−−−−−−−−−−−−−−
−一給電ピン46−−− −−−−−−−−−−−・−
・・−−一一−−−スプリング47−−− −−−−−
−−−・−・−一−−−−−−−・−・−ゴム弁48−
一−−・−・−・−〜−−・−−−−−−−・−−一−
−加工液供給孔49−−−−−−−一・−一一−−−−
−−−−−−−−−−−ブレーキローラ兼キャプスクン
FIG. 1 is an explanatory diagram showing one embodiment of the electrical discharge machining apparatus according to the present invention, FIG. 2 is an enlarged explanatory diagram of the imaging device portion thereof, and FIG. 3 is an explanatory diagram showing another embodiment of the electrical discharge machining apparatus according to the present invention. FIG. 1−・−・−−1−・−・−・・・−・−Processing machine body 2
−−−−−−−・・・・−・−・−−−−−−・−・−
Processing head 3-1--・----1--・----
1--------Electrode 4--・--・------1~-
−−−−・−・−−−Etank 5−−−−−・
・・−・−1−−−・−・−・−−−−Rail 6,
7-------------------111--Traveling trolley 8, 9.33.34.35-1-Motor 10, 11
・・−・−・−・−−−−−1−−1−−1 Drive wheel 12
, 13. 15--------------------Guide wheels 18, 19----------
-Thumb screws 20, 21--------1・--
-1---Rods 22, 23------・------・・-
・-----1--Imaging device 22a, 23a---
---------・-----1-・Hood 24.25--・
−1−−−−−−−−−−−・−Irradiation device 26.27
・〜−−−−・−−111−−−−−−−Lens holding tube or hood 26a, 27a−−−−−1−
--------~- Photography openings 26b, 27b ---
−・−−−−・−−−11−−−Processing liquid supply pipe 26cm
------・--
−−−1−−・−Workpiece 4, 30−・−・−−−−−
−−−−−−−1−・Cross slide table 31・−
---
−−−−・−−−−One base A11−−・−1−−−−−
---------・-m---...-Display device 37
−−−−−−・−・−・・−1−−−−・−−−−−−
11 Nozzle device 38----------1--
・----1---- Upper arm 39-------
−・−・・−−−−・−−−1−−−−Nozzle holder 4
0-1-----・--・--1~・・・------・--
-11 Nozzle 41---------・---1--------
−−−−−−−−−Cap nut 42−−−・−−−−−−−−−−−−−−−−−−−−−−Dice 43− ・
--1--・--・-----11--Guide holder 44, 45--
−1 power supply pin 46−−−−−−−−−−−−−−・−
・・−−11−−−Spring 47−−− −−−−−
−−−・−・−1−−−−−−−・−・−Rubber valve 48−
1-−・−・−・−〜−−・−−−−−−−・−−1−
- Machining fluid supply hole 49----1・-11----
−−−−−−−−−−−Brake roller and capsun

Claims (1)

【特許請求の範囲】 1)電極と被加工体間の放電により加工が行なわれてい
る加工部分の映像を得るため加工液中に設けられる撮像
装置と、上記撮像装置からの映像信号を画面上に映し出
すディスプレイ装置を備えた放電加工装置に於て、撮影
用の開口部を具備し少なくとも上記撮像装置のレンズ保
持筒又はフードを収容する筒体を設け、この筒体と上記
レンズ保持筒又はフードとの間に加工液供給管を接続し
たことを特徴とする上記の放電加工装置。 2)上記撮像装置がビデオカメラである特許請求の範囲
第1項記載の放電加工装置。 3)上記撮像装置がイメージセンサである特許請求の範
囲第1項記載の放電加工装置。 4)上記ディスプレイ装置が画面上に映し出された映像
を拡大又は縮小して映し出す特許請求の範囲第1項乃至
第3項のうちいずれか一に記載の放電加工装置。
[Claims] 1) An imaging device installed in the machining fluid to obtain an image of the machining part being machined by electric discharge between the electrode and the workpiece, and a video signal from the imaging device displayed on the screen. In an electric discharge machining device equipped with a display device for displaying images, a cylindrical body having an opening for photographing and accommodating at least a lens holding cylinder or hood of the imaging device is provided, and the cylindrical body and the lens holding cylinder or hood are connected to each other. The electrical discharge machining apparatus described above, characterized in that a machining fluid supply pipe is connected between the and. 2) The electrical discharge machining apparatus according to claim 1, wherein the imaging device is a video camera. 3) The electric discharge machining apparatus according to claim 1, wherein the imaging device is an image sensor. 4) The electric discharge machining apparatus according to any one of claims 1 to 3, wherein the display device enlarges or reduces the image displayed on the screen.
JP24878984A 1984-11-27 1984-11-27 Electric-discharge machine Pending JPS61131827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24878984A JPS61131827A (en) 1984-11-27 1984-11-27 Electric-discharge machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24878984A JPS61131827A (en) 1984-11-27 1984-11-27 Electric-discharge machine

Publications (1)

Publication Number Publication Date
JPS61131827A true JPS61131827A (en) 1986-06-19

Family

ID=17183417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24878984A Pending JPS61131827A (en) 1984-11-27 1984-11-27 Electric-discharge machine

Country Status (1)

Country Link
JP (1) JPS61131827A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183672A (en) * 1983-04-04 1984-10-18 Meiji Milk Prod Co Ltd Continuous production of whipped albumen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183672A (en) * 1983-04-04 1984-10-18 Meiji Milk Prod Co Ltd Continuous production of whipped albumen

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