JPS6161721A - Electric discharge machining device - Google Patents
Electric discharge machining deviceInfo
- Publication number
- JPS6161721A JPS6161721A JP18367284A JP18367284A JPS6161721A JP S6161721 A JPS6161721 A JP S6161721A JP 18367284 A JP18367284 A JP 18367284A JP 18367284 A JP18367284 A JP 18367284A JP S6161721 A JPS6161721 A JP S6161721A
- Authority
- JP
- Japan
- Prior art keywords
- machining
- workpiece
- electrode
- electric discharge
- discharge
- 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.)
- Granted
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
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Sensing Apparatuses (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
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.
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
を行なう通常の殿械加工と異なり、被加工体と電極との
加工液が介在する間隙に電圧パルスを印加し、その際に
生じる放電現象を利用する非接触加工である。Unlike normal machining, in which mechanical force is applied directly to the workpiece, electrical discharge machining equipment applies voltage pulses to the gap between the workpiece and the electrode, where the machining fluid is present. This is a non-contact machining process that utilizes electrical discharge phenomena.
而して、放電加工を行なう際には、被加工体の材質、加
工の目的や条件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。Therefore, when performing electrical discharge machining, the material of the electrode should be selected taking into account the material of the workpiece, the purpose and conditions of machining, etc., and the machining conditions should be selected to suit the shape of the workpiece and the purpose of the product. In other words, the required machined surface roughness is determined by supply intervention such as the power supply voltage, the duration of the voltage pulse or the discharge current pulse, the rest time thereof, the amplitude of the discharge current, and even the hydraulic pressure of the machining fluid. Machining is performed by selecting and setting the electrode consumption ratio and machining speed.
而して、放電加工が良好に行なわれている時Ｇこは、電
極と被加工体との間の加工間１ｔ２７全体に略均−に分
布して放電が行なわれるが、上記被加工体と電極との距
離が所定の値に保たれなくなったり又は加工間隙に介在
する加工液の口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
、加工間隙の全体に略均−に分布して行なわれなくなり
、上記電極と上記被加工体との間の放電が一箇所に集中
して起り、更にはこれがアーク等の異状放電に移行する
ことになる。Therefore, when electrical discharge machining is performed well, the electrical discharge is distributed approximately evenly over the entire machining gap 1t27 between the electrode and the workpiece. If the distance between the electrode and the workpiece cannot be maintained at a predetermined value, or if the mouth or properties of the machining fluid in the machining gap change, the discharge in the machining gap between the electrode and the workpiece will become irregular. At the same time, the discharge is no longer distributed approximately evenly over the entire machining gap, and the discharge between the electrode and the workpiece is concentrated in one place, and furthermore, this transforms into an abnormal discharge such as an arc. It turns out.
而して、上記の如く、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ざ等の加
工性能か変化し、加工か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１１１ｉ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 the machining performance will change, such as electrode wear and machining surface roughness, and machining will not be carried out smoothly. In some cases, the high 111i electrode or workpiece may be damaged.
而して、従来この放電の状態乃至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 the 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ば困ｆｆ１ｌｆであった。In particular, when a harmful discharge occurs, a concentrated discharge occurs prior to it, but it has been difficult to detect the occurrence of the precursor concentrated discharge at an early stage.
本発明は叙上の観点に立ってなされたものであって、そ
の目的とするところは、放電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、重臣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１−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、異状放電等によって電
極及び被加工体等が破１Ｈ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提供しようとするものである
。The present invention has been made based on the above-mentioned viewpoints, and its purpose is to improve the machining part of the workpiece facing the electrode during electrical discharge machining, and the outer peripheral contour of the machining gap formed by the two. In addition to enlarging or reducing the line portion and projecting it on a display device, the machining portion, the outer peripheral contour of the machining gap, and the discharge state of the line portion are determined with the naked eye or an appropriate automatic discrimination device, and the distance between the senior minister and the workpiece is determined. When each individual discharge becomes irregular by more than a certain level, or when it is no longer performed while being dispersed appropriately in the machining gap, or when the color tone or spectrum of each individual discharge changes more than a certain value, or when a characteristic color tone or spectrum is detected. Electrical discharge machining that can prevent electrodes, workpieces, etc. from being damaged by abnormal discharges by immediately controlling each part of the device and adjusting so that normal discharge occurs. The aim is to provide equipment.
而して、上記目的は、放電加工装置に於て、放電加工時
に上記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、上記加工部分や加工間隙の所望外周輪
郭線部分を撮γ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具備すること
によって達成される。The above object is to provide a light source in an electric discharge machining apparatus that illuminates a machining part of a workpiece facing the electrode during electric discharge machining, particularly a desired part of the outer peripheral contour of the machining gap formed by the two. This can be achieved by providing an imaging device that captures images of the desired outer peripheral contour of the processed portion or the processing gap, and a display device that displays signals from the imaging device on a screen.
上記の如く、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
別するので、集中放電又はアーク放電等の異状放電やそ
の前駆現象又は前駆状態等が直ちに発見されると共に、
上記異状放電によって高価な電極又は被加工体等が破［
０されるのを防止することができる。As mentioned above, during electrical discharge machining, the machined part of the workpiece facing the electrode and the desired outer contour of the machining gap are clearly displayed on the screen of the display device, and the distribution state of the electrical discharge, the generation of gas and machining debris, etc. , or furthermore, since the color tone and spectrum of the discharge are detected and determined at all times or with the naked eye or with appropriate equipment, abnormal discharges such as concentrated discharges or arc discharges, their precursor phenomena or precursor conditions, etc. can be immediately discovered, and
Expensive electrodes or workpieces are damaged due to the above abnormal discharge.
0 can be prevented.
以下、図面により本発明の詳細を具体的に説明する。 Hereinafter, the details of the present invention will be specifically explained with reference to the drawings.
第１図は、本発明にかか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他の実施例を
示す説明図、第３図は、その正面図、第４図は、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 explanatory diagram showing another embodiment of the imaging device portion thereof, and FIG. FIG. 4 is an explanatory diagram showing another embodiment.
先ず、第１図、第２図及び第３図について説明する。First, FIG. 1, FIG. 2, and FIG. 3 will be explained.
第１図、第２図及び第３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
電極、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は上記夫々の走行台車６及び７に取り
付けられたモータ、１０及び１１は上記夫々のモータ８
及び９のシャツ）８ａ及び９ａに取りイ」りられた駆動
輪、１２及び１３は夫々の走行台車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はガイド輸、１６及びＩ７ば上記夫々の走
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１裸ねし、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寸けられ
る共に、その先端部分に夫々撮像管等の撮像装置２２及
び２３を取り付けるボルダ２０ａ及び２１ ａが形成さ
れたロノＩ、２４及び２５は蝶ねし、２６及び２７は上
記夫々の撮像装置２２及び２３の先端部分に取り付けら
れた照Ｊｌｔ ＨＷ、２８は上記加工タンク４内に収容
された被加工体、２９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ば上記クロススラ・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、３３．３
４及び３５は上記クロススライドテーブル２９．３０及
びターンテーブル３１を駆動するモータ、３６はディス
プレイ装置、３７は１最（家督等の撮像装置、３日は筐
体、３９ばガラス、４０はワイパ４１を駆動するモータ
、４２はＯリング、４３は上記筐体３８内に上記撮（象
装置３７のレンズ部分を覆うように収容された油である
。In FIGS. 1, 2, and 3, 1 is the main body of the electrical discharge machining device, 2 is a machining 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, and 3 is an electrode. 4 is a processing tank formed into a circular or similar shape; 5 is a rail attached to the outer circumferential wall of the processing tank 4; 6 and 7 are running carts that run on the rails 5; 8 and 9 are the above-mentioned The motors 10 and 11 attached to the respective traveling carts 6 and 7 are the respective motors 8
and 9) driving wheels mounted on 8a and 9a; auxiliary wheels 12 and 13 rotatably supported on arms 6a and 7a formed on the respective traveling carts 6 and 7;
14 and 15 are guide transports, 16 and I7 are support arms attached to the above respective traveling carts 6 and 7, 18 and 19 are 1 bare screws, and 20 and 21 are upper and lower support arms attached to the above respective support arms 16 and 17. Lono I, 24 and 25 are designed so that their positions can be adjusted and have boulders 20a and 21a formed at their tips to which image pickup devices 22 and 23 such as image pickup tubes are attached, respectively. Reference numeral 27 indicates an optical head HW attached to the tip of each of the imaging devices 22 and 23, 28 indicates a workpiece housed in the processing tank 4, and 29 and 30 indicate the processing tank 4
A cross-slide table that moves in the axis and Y-axis directions,
31 is a turntable that is mounted on the cross slide table 29 and gives rotational motion to the machining tank 4; 32 is a base on the bed of the electrical discharge machine main body 1 on which the cross slide tables 29 and 30 are mounted; 33.3
4 and 35 are motors that drive the cross slide table 29, 30 and turntable 31, 36 is a display device, 37 is an image pickup device such as a family head, 3 is a housing, 39 is a glass, 40 is a wiper 41 42 is an O-ring, and 43 is an oil housed in the casing 38 so as to cover the lens portion of the imaging device 37.
而して、被加工体２８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
３１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。The workpiece 28 is housed in the processing tank 4, and is rotated and moved in the X-axis and Y-axis directions by the turntable 31 and cross slide table 29, 30 on which the processing tank 4 is mounted. A machining feed motion is given.
加工タンク４は円形又はこれに頚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か取り付けられ、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 machining tank 4 is formed into a circular shape or a shape that necks the circular shape, and a rail 5 is attached to the outer circumferential wall surface of the processing tank 4. On the rail 5, traveling carts 6 and 7 that move on the rail 5 are mounted.
上記夫々の走行台車６及び７にばモータ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）４及び１５は、レール５の上面に乗り、駆動＋１
Ｐｉ１０及び１１と補助輪１２及び１３が上記レール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の回動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 4 and 15 of the traveling carts 6 and 7 ride on the upper surface of the rail 5, and drive +1
Pi10 and 11 and auxiliary wheels 12 and 13 are connected to the above rail 5
are sandwiched between both sides, and the traveling carts 6 and 7 run on the rails 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り、上記支持アーム１６及び１７
にはロッド２０及び２１が蝶ねし１８及び１９によよっ
て固定されている。そして、上記１蝶ねじ１８及び】９
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が嵌め込まれる
ホルダ２０ａ及び２１ ａが形成されており、上記ホル
ダ２０ａ及び２１ａにＩＩｌ像装置２２及び２３が蝶ね
じ２４及び２５によって位置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 17.
Rods 20 and 21 are fixed by hinges 18 and 19. And the above-mentioned 1 thumbscrew 18 and ]9
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
Holders 20a and 21a into which the imaging devices 22 and 23 are fitted are formed at the tip of the holder 20a and 21a. It is installed like this.
撮像装置２２及び２３の先端部分の外周壁面にはレーザ
光又はハロゲン光等をオプチカルファ・イバを介して被
加工体２８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に照射する照射装置２６及び２７が
取り付けられている。Laser light, halogen light, or the like is irradiated onto the outer circumferential wall surface of the tip portions of the imaging devices 22 and 23 via an optical fiber onto the processed portion of the workpiece 28 and the outer circumferential outline portion of the processing gap formed by the two. Irradiation devices 26 and 27 are attached.
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２６及び２７によ
って照射されると共に、その部分が撮像装置２２及び２
３によって撮影され、上記撮像装置２２及び２３からの
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３Ｇの画面上に映し出されるように構成されてい
る。During electrical 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 26 and 27, and the portions are illuminated by the imaging devices 22 and 2.
3, and signals from the imaging devices 22 and 23 are sent to the display device 36 and displayed on the screen of the display device 3G.
なお、上記各部の動作は予め定められたプ１コグラムに
従って図示されていな数値制御装置が内蔵された制御装
置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 operations of the above-mentioned parts are collectively controlled by a control device having a built-in numerical control device (not shown) according to a predetermined program.
而して、本発明にかか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２８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２２．２３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２６及び２７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
加工部分を黒１象管２２及び２３が撮影し、上記加工部
分等を撮像装置２２及び２３が柵影し、その信号がディ
スプレイ装置３Ｇ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 electrical discharge machining apparatus according to the present invention, a predetermined voltage pulse is applied between the electrode 3 and the workpiece 28 from a power supply circuit (not shown) to perform electrical discharge machining. Once started, the pre-positioned imaging device 22, 23 and the display device 36 are activated and, if necessary, continuously scan the desired local portion of the peripheral contour portion of the machining gap or along the contour portion. In order to perform the detection, two running carts 6 and 7 start running at a predetermined speed toward a fixed direction or position on a rail 5 attached to the outer peripheral wall of the processing tank 4. However, the irradiation devices 26 and 27 attached to the outer peripheral wall surface at the tips of the imaging devices 22 and 23 irradiate the desired processing portion of the workpiece 28 and the desired outer peripheral contour line portion of the processing gap, and the processing portion is colored with black 1. The elephant tubes 22 and 23 take pictures, the imaging devices 22 and 23 shadow the processed parts, and the signals are sent to the display device 3G and displayed on the display device 36.
displayed on the screen.
而して、上述の如く、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２６及び２７が、加工
中は常時被加工体２８の所望加工部分や加工間Ｊ１７ｉ
の所望外周輪郭線部分を照射するので、加工屑等によっ
て汚濁した加工液であっても上記撮像装置２２及び２３
は上記被加工体２８の所望加工部分等をディスプレイ装
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２８の間の加工間隙に
路内−に分布した状態で放電が均一に行なわれなく成っ
たり又はアーク等の異状放電が生じた際には、之を目視
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。As described above, the irradiation devices 26 and 27 attached to the outer circumferential wall surface at the tips of the imaging devices 22 and 23 constantly monitor the desired processing portion of the workpiece 28 and the processing interval J17i during processing.
Since the desired outer peripheral contour of
The desired processed portion of the workpiece 28 can be clearly displayed on the screen of the display device 36. During machining, if the discharge is not uniformly distributed in the machining gap between the electrode 3 and the workpiece 28, or if an abnormal discharge such as an arc occurs, the It is possible to detect and discriminate by visual detection or automatic detection and immediately control each part of the device to return to a good discharge state.
なお、上記撮像装置２２及び２３は通常は耐油型のもの
をロッド２０及び２１のホルダ２０ ａ及び２１ ａに
直接嵌め込んで使用するが、第２図及び第３図に示す如
く、少なくとも撮（象装置３７のレンズの部分がｌ由、
１３中に浸された犬態で筐体３８内に密閉して収容され
、ガラス３９の部分がワイパ４］によって拭き払われな
がら被加工体２日の所望加工部分や加工間隙の所望外周
輪９１；１腺部分を撮影するように構成されたものも使
用される。このように構成するすることによって、より
鮮明な画像を得ることが可能と成る。The imaging devices 22 and 23 are normally oil-resistant and are directly fitted into the holders 20a and 21a of the rods 20 and 21, but as shown in FIGS. The lens part of the image device 37 is
The workpiece is housed in a hermetically sealed state in the housing 38 in a state immersed in the liquid 13, and while the glass 39 portion is wiped off with the wiper 4], the workpiece 2 is placed in the desired machining area and the desired outer circumferential ring 91 in the machining gap. ; A device configured to image a single gland is also used. By configuring in this way, it becomes possible to obtain a clearer image.
次に、Ｍ’Ｓ ４図の装置について説明する。Next, the apparatus shown in FIG. M'S 4 will be explained.
第４図中、第１図乃至第３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、４４は加
工へノド２に代えてカラム等に取り付けた上部アーム４
５に取り付けられたノズル装置、４６はノズルホルダ、
４７はノズル、４８は袋ナツト、４９はガイドホルダ５
０に固定して設けられたダイス、５１及び５２は給電ピ
ン、５３はスプリング、５４はゴム弁、５５ば加工液供
給孔、５６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クン、５７及
び５８はピンチローラ、５９はキャプスタン、６０はワ
イヤ電極である。In Figure 4, the same numbers as those in Figures 1 to 3 indicate the same components, and 44 is an upper arm attached to a column etc. in place of the processing throat 2. 4
5 is a nozzle device attached, 46 is a nozzle holder,
47 is a nozzle, 48 is a cap nut, and 49 is a guide holder 5.
0 is a fixed die, 51 and 52 are power supply pins, 53 is a spring, 54 is a rubber valve, 55 is a machining fluid supply hole, and 56 is a brake that acts as a brake when the motor is stopped. 57 and 58 are pinch rollers, 59 is a capstan, and 60 is a wire electrode.
而して、ノズルホルダ４６は取付はフランジ４６ａ及び
ノズル室４６ｂを有し、上記ノズルホルダ４６内にノズ
ル４７が摺動自在に嵌め込まれ、更にスプリング５３と
袋ナンド４日が順次取り付けられる。然る後、このノズ
ル装置４４は取付はフランジ４６ａと図示されていな取
付はボルト等により上部アーム４５に取り付けられる。The nozzle holder 46 has a mounting flange 46a and a nozzle chamber 46b, and the nozzle 47 is slidably fitted into the nozzle holder 46, and a spring 53 and a bag nand are sequentially mounted. Thereafter, the nozzle device 44 is attached to the upper arm 45 using a flange 46a and bolts (not shown).
ワイヤ電極６０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クン５６とピンチロ
ーラ５７間を通過し、ノズルホルダ４６内で給電ピン５
１及び５２によって被加工体２日との間に所定の電圧パ
ルスが供給され、ダイス４９を経てピンチローラ５８と
キャプスタン５９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 60 is supplied from an electrode supply device (not shown), passes between the brake roller/capsun 56 and the pinch roller 57, and is connected to the power supply pin 5 within the nozzle holder 46.
A predetermined voltage pulse is supplied between the workpiece 1 and 52 and the workpiece is collected through the die 49, between the pinch roller 58 and the capstan 59, and into an electrode collection device (not shown). has been done.
上記ワイヤ電極６０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 60 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２２．２３及びディスプレイ装置３６が作’
ｆＪＪ（、、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、撮像装置２２及び２３の先端部分に取り付けられた
照射装置２６及び２７によってワイヤ電極６０と被加工
体２８との加工間隙部分が照射されると共に、撮（象装
置２２及び２３によって上記加工間隙部分が撮壽され、
その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 devices 22, 23 and the display device 36, which have been positioned in advance, are activated.
fJJ (or, if necessary, a rail 5 mounted on the outer peripheral wall of the processing tank 4 in order to continuously detect a desired local part of the outer peripheral contour part of the processing gap or along the contour line part. Two traveling carts 6 and 7 start running on the top at a predetermined speed toward a fixed direction or position, and the wire electrodes 60 and 7 are illuminated by the irradiation devices 26 and 27 attached to the tips of the imaging devices 22 and 23. The machining gap portion between the workpiece 28 and the workpiece 28 is irradiated, and the machining gap portion is photographed by the imaging devices 22 and 23.
The signal is sent to the display device 36 and clearly displayed on the screen of the display device 36.
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１１５′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状放電を未然に
防止することができると共に、上記異状放電によって高
価な電極又は被加工体等が破ｔｎ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 portion of the workpiece is clearly displayed on the screen of the display device, and machining can be performed while constantly detecting and determining the state of discharge, color tone, spectrum, etc. of discharge with the naked eye or with appropriate equipment. Therefore, it is possible to prevent abnormal discharges such as concentrated discharges or arc discharges, and it is also possible to prevent expensive electrodes, workpieces, etc. from being damaged by the abnormal discharges.
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
たが走行金庫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のである。また、照射装置を
撮像装置の先ｈ：：！部分に設けたが別個に設けてもよ
く、更に、上記照射’ＪＷ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、１最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（■するものである。Note that the present invention is not limited to the embodiments described above. That is, for example, in this embodiment, two traveling carriages are used, but the number of traveling safes can be increased or decreased as appropriate depending on the size and shape of the workpiece. Also, place the irradiation device in front of the imaging device h::! The irradiation 'JW is not limited to laser light or halogen light, but can sufficiently irradiate the machining part of the workpiece and the outer circumferential contour of the machining gap. If so, other known light sources can be used. 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 device be configured to be detected and determined using appropriate equipment.In addition, the method of mounting the imager, 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 within the company,
The present invention covers all of them.
第１図は、本発明にかか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他の実施例を
示す説明図、第３図は、その正面図、第４図は、池の実
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 explanatory diagram showing another embodiment of the imaging device portion thereof, and FIG. FIG. 4 is an explanatory diagram showing an example of a pond.
Claims (1)
、両者間に電源回路から所定の値の電圧パルスを印加し
て放電を発生させ、これにより加工を行なう放電加工装
置に於て、 放電加工時に上記電極と相対向した被加工体の加工部分
又は両者によって形成される加工間隙の外周輪郭線部分
を照射する光源と、上記加工又は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具備したことを特徴とする上記の
放電加工装置。 ２）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項記載
の放電加工装置。[Scope of Claims] 1) A machining fluid is supplied between the workpiece and the electrode, and a voltage pulse of a predetermined value is applied between the two from a power supply circuit to generate an electric discharge, thereby performing machining. In the machining device, a light source that illuminates the machining part of the workpiece opposite to the electrode during electric discharge machining or the outer circumferential contour of the machining gap formed by both, and an imaging device that photographs the machining or contour line part. The electric discharge machining apparatus described above, comprising: a display apparatus for displaying a signal from the imaging apparatus on a screen; 2) The electric discharge machining apparatus according to claim 1, wherein the display device enlarges or reduces the image displayed on the screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18367284A JPS6161721A (en) | 1984-09-04 | 1984-09-04 | Electric discharge machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18367284A JPS6161721A (en) | 1984-09-04 | 1984-09-04 | Electric discharge machining device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6161721A true JPS6161721A (en) | 1986-03-29 |
| JPH0579446B2 JPH0579446B2 (en) | 1993-11-02 |
Family
ID=16139905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18367284A Granted JPS6161721A (en) | 1984-09-04 | 1984-09-04 | Electric discharge machining device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6161721A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2181791A2 (en) * | 2008-10-28 | 2010-05-05 | Agie Sa | Machine of electrical discharge machining and positioning method for this machine |
| CN101890543A (en) * | 2010-06-24 | 2010-11-24 | 无锡微研有限公司 | CCD camera monitoring module of ultrafine electric spark machine tool |
| WO2020134078A1 (en) * | 2018-12-28 | 2020-07-02 | 苏州贸港机械配件有限公司 | High-precision inspection apparatus for mold steel and inspection method therefor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824062U (en) * | 1981-08-07 | 1983-02-15 | 川崎製鉄株式会社 | Support device for bead cutting shape monitoring device for tube inner welds |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824062B2 (en) * | 1979-03-30 | 1983-05-19 | 富士通株式会社 | How to accommodate transport lines in a 4-wire switching device |
-
1984
- 1984-09-04 JP JP18367284A patent/JPS6161721A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824062U (en) * | 1981-08-07 | 1983-02-15 | 川崎製鉄株式会社 | Support device for bead cutting shape monitoring device for tube inner welds |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2181791A2 (en) * | 2008-10-28 | 2010-05-05 | Agie Sa | Machine of electrical discharge machining and positioning method for this machine |
| EP2181791A3 (en) * | 2008-10-28 | 2012-06-13 | Agie Charmilles SA | Machine of electrical discharge machining and positioning method for this machine |
| CN101890543A (en) * | 2010-06-24 | 2010-11-24 | 无锡微研有限公司 | CCD camera monitoring module of ultrafine electric spark machine tool |
| WO2020134078A1 (en) * | 2018-12-28 | 2020-07-02 | 苏州贸港机械配件有限公司 | High-precision inspection apparatus for mold steel and inspection method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0579446B2 (en) | 1993-11-02 |
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