JPS60213431A - Electric discharge machining device - Google Patents
Electric discharge machining deviceInfo
- Publication number
- JPS60213431A JPS60213431A JP6735184A JP6735184A JPS60213431A JP S60213431 A JPS60213431 A JP S60213431A JP 6735184 A JP6735184 A JP 6735184A JP 6735184 A JP6735184 A JP 6735184A JP S60213431 A JPS60213431 A JP S60213431A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- electrode guide
- workpiece
- actuator
- machining
- 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
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
- B23H7/26—Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
-
- 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
- B23H1/00—Electrical 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
- B23H1/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges
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)
Abstract
Description
【発明の詳細な説明】
本発明は放電加工装置に関し、特に被加工体に対して所
定の加工間隙を保って対向せしめた電極案内体の表面に
沿って、テープ電極、網状電極、ワイヤ電極等の細長い
電極体を張設して加工を行なう放電加工装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric discharge machining apparatus, and in particular, a tape electrode, a mesh electrode, a wire electrode, etc. The present invention relates to an electric discharge machining apparatus that performs machining by stretching an elongated electrode body.
放電加工装置は、被加工体に対して機械力を直接的に作
用させ不加工を行なう通常の機械加工と異なり、被加工
体と電極との間に間歇的な電圧パルスを印加し、被加工
体表面に生じる放電侵蝕を利用して加工を行なう非接触
加工であるため、被加工体が導電性の材質であれば、そ
の硬度や靭性に関係なく、いかなる複雑、微細な形状を
も加工することができるという利点を有している。また
、被加工体に加わる力が機械加工等に比べて著しく小さ
いので、薄い板や管、或いは細い線の加工も容易に行な
うことができる。Unlike normal machining, which applies mechanical force directly to the workpiece to perform non-machining, electrical discharge machining equipment applies intermittent voltage pulses between the workpiece and an electrode, thereby machining the workpiece. Since this is non-contact machining that utilizes electrical discharge erosion that occurs on the body surface, any complex or minute shape can be machined as long as the workpiece is made of conductive material, regardless of its hardness or toughness. It has the advantage of being able to Furthermore, since the force applied to the workpiece is significantly smaller than that in machining, it is possible to easily process thin plates, tubes, or thin wires.
而して、通常、放電加工装置に於ては、放電加工中、電
極と被加工体との間に異常アーク放電等が発生しないよ
うに上記被加工体及び電極の上下等対向方向への加工送
り等の移動はサーボ制御装置によって制御されるように
構成されている。Therefore, normally, in electrical discharge machining equipment, during electrical discharge machining, the workpiece and the electrode are machined in opposing directions, such as up and down, to prevent abnormal arc discharge etc. from occurring between the electrode and the workpiece. Movement such as feeding is controlled by a servo control device.
然しながら、放電による電極の消耗は不可避である上、
場合によっては上記電極の加工送りが適切に行なわれな
いために、高価な電極が異常に消耗したりするという問
題点があった。However, electrode wear due to discharge is unavoidable, and
In some cases, the above-mentioned electrodes are not properly processed and fed, resulting in the problem that the expensive electrodes are abnormally worn out.
特に、大型の型彫り電極の場合には、消耗した電極の交
換作業に大変な費用と手間がかかる等の問題もあった。Particularly, in the case of large die-cut electrodes, there are problems in that replacing the worn out electrodes requires a great deal of cost and effort.
上記の問題を解決するために、所望の加工形状に応じた
成形面を有し、上記成形面が被加工体と相対向するよう
配置される電極案内体を設け、上記案内体の上記成形面
にテープ電極、網状電極、ワイヤ電極等の細長く且つ屈
曲可能な電極体を密着させて走行せしめつ＼放電加工を
行ない、使用後の消耗した電極体を逐次回収若しくは廃
棄するように構成した放電加工装置が開発され、これに
より、実質的に電極案内体を消耗変形さ廿ることなく長
時間の加工を行なうことが可能となった。In order to solve the above problem, an electrode guide is provided which has a forming surface according to a desired processing shape and is arranged such that the forming surface faces the workpiece, and the forming surface of the guide is provided. Electrical discharge machining in which a long, thin and bendable electrode body, such as a tape electrode, a mesh electrode, or a wire electrode, is brought into close contact with the surface of the electric discharge machining machine. A device has been developed, which makes it possible to perform long-term machining without substantially wearing out the electrode guide.
然しなから、上記のような放電加工装置も、被加工体の
形状や加工の目的に応じて上記案内体を適宜交換する必
要があり、特に、大型の案内体の場合には、交換作業に
手間がかかり、また交換後のテープ状電極の張設や案内
体の位置決め配置等が煩雑であるという問題があった。However, in the electric discharge machining apparatus as described above, it is necessary to replace the guide body as appropriate depending on the shape of the workpiece and the purpose of machining, and especially in the case of a large guide body, it is difficult to replace the guide body. There are problems in that it takes time and effort, and it is complicated to stretch the tape-shaped electrode after replacement, position the guide body, etc.
本発明は畝上の観点に立ってなされた本のであって、そ
の目的とするところは、上記電極案内体を自動的に交換
しつ＼加工を続行し得る放電加工装置を提供することに
ある。The present invention is a book made from the viewpoint of ridges, and its purpose is to provide an electric discharge machining apparatus that can automatically replace the electrode guide and continue machining. .
而して、上記の目的は、それぞれ異なった形状の成形面
を有する複数の電極案内体を収納し、それらのうちから
必要なものを予め定められたプログラムに従って所望の
順序で選択し、これを順次上記被加工体に対向せしめる
電極案内体交換装置を設けることによって達成される。The above purpose is to store a plurality of electrode guide bodies each having a molded surface of a different shape, select the necessary ones from among them in a desired order according to a predetermined program, and then This is achieved by providing an electrode guide exchange device that is successively opposed to the workpiece.
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１ｔｉ！ＩＪは本発明に係る放電加工装置の一実施例
の要部を示す説明図、第２図は第１図中ｎ−ｎ線に沿っ
た断面図、第３図は本発明に係る放電加工装置に用いら
れる電極案内体の幾つかの例を示す説明図、第４図は第
１図及び第２図に示した放電加工装置の作動を示す説明
図、第５図は本発明に係る放電加工装置を用いた加工例
を示す説明図である。1st ti! IJ is an explanatory diagram showing a main part of an embodiment of the electrical discharge machining apparatus according to the present invention, FIG. 2 is a sectional view taken along the line nn in FIG. 1, and FIG. 3 is an illustration of the electrical discharge machining apparatus according to the present invention. FIG. 4 is an explanatory diagram showing the operation of the electric discharge machining apparatus shown in FIGS. 1 and 2, and FIG. 5 is an explanatory diagram showing some examples of electrode guide bodies used in the invention. It is an explanatory view showing an example of processing using the device.
而して、両図中、ｌは被加工体、２は図示されていない
放電加工装置本体のカラムまたは該カラムから加工テー
ブル上に伸びるアームに昇降自在に設けられるステム３
の先端に取り付けられた加工ヘソド、４はステム３を図
中上下（Ｚ軸）方向に昇降させ、Ｚ軸方向の加工送りを
与えるモータ、５はテープ電極、ワイヤ電極、網状電極
等の細長く且つ屈曲自在な電極体（以下単に「テープ電
極１という。）、６ａないし６ｅは電極案内体、７は電
極案内体交換装置、８はテープ電極供給ドラム、９はテ
ープ電極供給ドラム８を回転させてテープ電極を送り出
したり或いは上記テープ電極供給ドラム８に制動力を与
えたりする制動ローラ、１０．１０はガイドローラ、１
１． １１は通電ピン、１２は上記ガイドローラ１０．
１０及び通電ピン１１． １１を収容し、モータ１３
によってガイドレール１４．１４に沿って移動せしめら
れる電極送出位置調節筐体、１５はキャプスタン、１６
はピンチローラ、１７は上記キャプスタン１５及びピン
チローラ１６を収容し、モータ１８によってガイドレー
ル１９．１９に沿って移動せしめられる電極引取位置調
節筐体、２０は消耗したテープ電極５を回収する電極回
収ドラムである。In both figures, l denotes a workpiece, and 2 denotes a stem 3 which is movably mounted on a column of the electrical discharge machining apparatus main body (not shown) or an arm extending from the column onto the machining table.
4 is a motor that raises and lowers the stem 3 in the vertical (Z-axis) direction in the figure and provides machining feed in the Z-axis direction; 5 is a long and narrow electrode such as a tape electrode, wire electrode, or mesh electrode; A bendable electrode body (hereinafter simply referred to as "tape electrode 1"), 6a to 6e are electrode guide bodies, 7 is an electrode guide body exchange device, 8 is a tape electrode supply drum, and 9 is a rotating tape electrode supply drum 8. A braking roller for sending out the tape electrode or applying a braking force to the tape electrode supply drum 8, 10.10 is a guide roller, 1
1. 11 is a current-carrying pin, 12 is the guide roller 10.
10 and energizing pin 11. 11 and motor 13
15 is a capstan;
17 is a pinch roller; 17 is an electrode collection position adjustment housing that accommodates the capstan 15 and pinch roller 16 and is moved along guide rails 19 and 19 by a motor 18; 20 is an electrode for collecting the worn-out tape electrode 5; It is a collection drum.
なお、上記通電ピン１１．１１と被加工体１との間に放
電加工のための所定の電圧パルスを供給する電源装置や
、被加工体１を収容し内部に加工液を満たす加工タンク
、加工部分に加工液を供給するノズル、被加工体１と電
極案内体６ａないし６ｅとの間に図中Ｘ−Ｙ軸方向の加
工送りを与えるため上記加工タンクを載置するクロスス
ライドテーブルとその駆動用モータ、上記各種加工送り
を予め定められたプログラムに従って統括制御する数値
制御装置等々は、通電の放電加工装置に使用される公知
のものと同様であるので図では省略しである。In addition, a power supply device that supplies a predetermined voltage pulse for electrical discharge machining between the current-carrying pin 11. A nozzle for supplying machining fluid to the part, a cross slide table on which the machining tank is placed, and its drive, in order to provide machining feed in the X-Y axis direction in the figure between the workpiece 1 and the electrode guides 6a to 6e. The motor, the numerical control device that centrally controls the various machining feeds mentioned above according to a predetermined program, etc. are the same as those used in the electrical discharge machining apparatus, and are therefore omitted from the drawings.
而して、テープ電極５は、上記電極供給ドラム８から引
き出され、ガイドローラ１０． １０や通電ピン１１．
１１間を通過した後、電極案内体（第１図に示した状
態に於ては電極案内体６ｃ）の先端部の成形面まで導か
れ、当該成形面に接触しつ一移動し、連続的又は間歇的
に回転するキャプスタン１５及びピンチローラ１６によ
って強い張力を受けつ＼、電極回収ドラム２０に回収さ
れるようになっている。Then, the tape electrode 5 is pulled out from the electrode supply drum 8 and placed on the guide roller 10. 10 and energizing pin 11.
11, it is guided to the molded surface at the tip of the electrode guide (electrode guide 6c in the state shown in FIG. 1), moves once while contacting the molded surface, and is continuously Alternatively, the electrodes are collected into the electrode collection drum 20 while being subjected to strong tension by the capstan 15 and pinch roller 16 that rotate intermittently.
而して、加工中は、テープ電極５の張設された成る一つ
の電極案内体を被加工体ｌに対して所定の加工間隙を保
って対向せしめ、図では省略した電源装置から通電ピン
１１． １１を通じてテープ電極５と被加工体１との間
に電圧パルスを印加し、被加工体表面に生じる放電侵蝕
によって放電加工を進行させる。加工間隙には、図では
省略した加工液噴出ノズル等を通じて新たな加工液を噴
出供給し、加工屑等で汚染された加工間隙内の加工液を
常に清浄な加工液と交換するようにする。During machining, one electrode guide body, on which the tape electrode 5 is stretched, is opposed to the workpiece l with a predetermined machining gap maintained, and the current-carrying pin 11 is connected to the power supply device (not shown in the figure). ．． A voltage pulse is applied between the tape electrode 5 and the workpiece 1 through the tape electrode 11, and electric discharge machining progresses by the discharge erosion generated on the surface of the workpiece. New machining fluid is jetted into the machining gap through a machining fluid jetting nozzle (not shown), so that the machining fluid in the machining gap contaminated with machining debris is always replaced with clean machining fluid.
而して、被加工体と電極案内体間の加工送りは、被加工
体１を収容する加工タンクを載置したクロススライドテ
ーブル（図では省略）をＸ軸及びＹ軸方向に移動させ、
また加工ヘッド２全体をＺ軸方向に移動させることによ
って行なわれる。The processing feed between the workpiece and the electrode guide is carried out by moving a cross slide table (not shown in the figure) on which a processing tank containing the workpiece 1 is placed in the X-axis and Y-axis directions.
Further, the processing is performed by moving the entire processing head 2 in the Z-axis direction.
また、加工の進行に伴ってテープ電極が消耗するのに応
じて、キャプスタン１５及びピンチローラ１６等を連続
的または間歇的に回転させ、加工により消耗したテープ
電極を逐次新たな電極部分に更新する。In addition, as the tape electrode wears out as processing progresses, the capstan 15, pinch roller 16, etc. are rotated continuously or intermittently, and the tape electrode worn out due to processing is sequentially replaced with a new electrode part. do.
而して、テープ電極５は、単純な金属テープ又は細長い
網状金属であっても良いが、場合によっては多数の切り
込み等が設けられた金属テープでこれを引き延ばしたと
きに網状となるようなものでもあっても良い。また、テ
ープ電極の代りにワイヤ電極を用いることもできる。The tape electrode 5 may be a simple metal tape or a long and thin metal mesh, but in some cases, it may be a metal tape with a large number of cuts, etc., which becomes a mesh when stretched. But it's okay. Also, wire electrodes can be used instead of tape electrodes.
一方、電極案内体６ａないし６ｅの材料としては、耐摩
耗性合金、セラミックス等を用い得るが、金属やプラス
チックスの表面をポリテトラフルオロエチレンその他の
表面摩擦の小さい樹脂でコーティングして電極体との摺
動摩擦を軽減させるようにしたものや、或いは金属の表
面を耐摩耗材料で被覆したものを用いるようにしても良
い。On the other hand, as the material for the electrode guides 6a to 6e, wear-resistant alloys, ceramics, etc. can be used, but the surface of metal or plastic may be coated with polytetrafluoroethylene or other resin with low surface friction to form the electrode body. It is also possible to use a material designed to reduce sliding friction, or a material whose metal surface is coated with a wear-resistant material.
而して、本発明に係る放電加工装置に於ては、例えば第
３図に示すようなそれぞれ異なった形状の成形面を有す
る複数の電極案内体６ａないし６ｅを、加工形状に応じ
て適宜交換しっ＼加工を行なうものである。この交換を
自動的に行なうための電極案内体交換装置の一実施例を
第２図を参照しっ一説明する。Therefore, in the electric discharge machining apparatus according to the present invention, the plurality of electrode guide bodies 6a to 6e each having a molding surface of a different shape, as shown in FIG. 3, can be replaced as appropriate depending on the machining shape. It is used for processing. An embodiment of an electrode guide exchanging device for automatically performing this exchange will be explained with reference to FIG. 2.
第２図に示した電極案内体交換装置７中、７ａは第１図
に示した加工ヘッド２全に固定して設けられ、複数の電
極案内体６ａないし６ｅを図中左右方向にスライド可能
に収容するケーシング、７ｂはケーシング７ａ内の電極
案内体を図中右方向に押圧、移動せしめる油圧アクチュ
エータ、７ｃは上記アクチュエータ７ｂのピストンロッ
ドの先端に取りイ」けられた押圧板、７ｄはケーシング
７ａの上記アクチュエータ７ｂとは反対側の壁面を貫通
して取り付けられたロッド、７ｅば上記ロッド７ｄの内
端に取り付けられた押圧板、７ｆはケーシング内面と押
圧板７ｅの間に作用し、押圧板をロッド７ｄと共に図中
左方向へ押し出すスプリング、７ｇは電極案内体をケー
シング７ａから図中下方向へ押し出し或いは引き戻すた
めの油圧アクチュエータ、７ｈは上記アクチュエータ７
ｇのピストンロッドの先端に取り付けられたチャック、
７ｉ（以下第１図も参照）は電極案内体へのテープ電極
の張設を補助するレバー、７ｊは上記レバー７量の先端
に取り付けられたローラ、７には上記レバー７１の軸支
部分に於て上記レバーに固着されたウオームホイール、
７ｍはモータ７ｎの回転軸に取り付けられウオームホイ
ール７にと噛み合うウオームギアであり、また２１は油
圧ポンプ、２２及び２３は４ポ一ト３位置切換弁、２４
はオイルタンクである。In the electrode guide exchanging device 7 shown in FIG. 2, 7a is fixed to the entire processing head 2 shown in FIG. 7b is a hydraulic actuator that presses and moves the electrode guide body in the casing 7a to the right in the figure; 7c is a pressing plate installed at the tip of the piston rod of the actuator 7b; 7d is the casing 7a; A rod 7e is attached to the wall surface on the opposite side of the actuator 7b, and 7e is a pressure plate attached to the inner end of the rod 7d. 7f acts between the inner surface of the casing and the pressure plate 7e. 7g is a hydraulic actuator for pushing out or pulling back the electrode guide from the casing 7a downward in the figure, and 7h is the actuator 7.
chuck attached to the tip of the piston rod of g,
7i (see also Figure 1 below) is a lever that assists in tensioning the tape electrode on the electrode guide; 7j is a roller attached to the tip of the lever 7; A worm wheel fixed to the above lever,
7m is a worm gear attached to the rotating shaft of the motor 7n and meshes with the worm wheel 7; 21 is a hydraulic pump; 22 and 23 are 4-point and 3-position switching valves;
is an oil tank.
而して、各電極案内体６ａないし６ｅは、それらのシャ
フト部に形成された凹部６ａ’ 、 ６ａ’ 、 ６ｂ
’ 。Thus, each electrode guide body 6a to 6e has a recess 6a', 6a', 6b formed in the shaft portion thereof.
'.
６ｂ’、・・・６ｅ’、 ６ｅ’ （第３図参照）が、
ケーシング７ａの上面に明けた図中左右方向に延びる長
孔７ａ’の端縁に係合せしめられ、図中左右方向にスラ
イド可能なようケーシング７ａ内に収納されており、ア
クチュエータ７ｂの押圧板７ｃと、反対側のロッド７ｄ
の押圧板７ｅとの間に挟持され、アクチュエータ７ｂの
ピストンロッドの進退に応じて各電極案内体６ａないし
６ｅが図中左右方向に移動せしめられるようになってい
る。一方、アクチュエータ７ｇのピストンロンドの先端
に取り付けられたチャック７１＋は、電極案内体のシャ
フト部を把持し、そのピストンロンドの進退に応じて電
極案内体を図中上下方向（第１図中Ｚ軸方向）に移動さ
せる。ケーシング７ａの上面に明けた上記長孔７８′は
、アクチュエータ７ｇに対向する位置に於てのみ幅広に
なっており、当該位置では電極案内体のシャフト部の前
記凹部６ａ’ 、 ６ａ’等に対する保合が解かれると
共に、チャック７１１が自由に通過し得るようになって
いる。従って、切換弁２２を制御してアクチュエータ７
ｂを作動させることにより、加工すべき形状に応じた所
望の電極案内体（第２図の場合６ｃ）をアクチュエータ
７ｇの直下に移動せしめ、次いで切換弁２３を制御して
アクチュエータ７ｇを作動させ、上記電極案内体６ｃを
図中下方に送ってこれを被加工体の加工部分に対向させ
るものである。当該電極案内体６ｃによる加工を終え、
別の電極案内体に交換する場合には、アクチュエータ７
ｇを作動させて上記電極案内体６ｃを引き上げ、次いで
アクチュエータ７ｂを作動させて所望の電極案内体をア
クチュエータ７ｇの直下に移動せしめ、然る後、アクチ
ュエータ７ｇを作動させて当該電極案内体を図中下方に
送って被加工体に対向させるものである。6b',...6e', 6e' (see Figure 3) are
The press plate 7c of the actuator 7b is engaged with the edge of an elongated hole 7a' extending in the left-right direction in the figure and is housed in the casing 7a so as to be slidable in the left-right direction in the figure. and rod 7d on the opposite side
The electrode guide members 6a to 6e are held between the electrode guide member 6a and the press plate 7e, and are moved in the left-right direction in the figure in response to the movement of the piston rod of the actuator 7b. On the other hand, the chuck 71+ attached to the tip of the piston rond of the actuator 7g grips the shaft portion of the electrode guide, and moves the electrode guide in the vertical direction in the figure (Z-axis in FIG. direction). The elongated hole 78' formed in the upper surface of the casing 7a is widened only at the position facing the actuator 7g, and at this position, it is difficult to protect the shaft part of the electrode guide from the recesses 6a', 6a', etc. As the bond is released, the chuck 711 can freely pass through. Therefore, by controlling the switching valve 22, the actuator 7
By actuating b, a desired electrode guide (6c in FIG. 2) according to the shape to be machined is moved directly below the actuator 7g, and then the switching valve 23 is controlled to actuate the actuator 7g, The electrode guide 6c is sent downward in the figure to face the processing portion of the workpiece. After completing the processing using the electrode guide 6c,
When replacing with another electrode guide, actuator 7
g to pull up the electrode guide 6c, then actuate the actuator 7b to move the desired electrode guide directly below the actuator 7g, and then actuate the actuator 7g to move the electrode guide as shown in the figure. It is sent mid-downward to face the workpiece.
而して、新たな電極案内体に交換した後、その成形面に
テープ電極５を適正に張設する必要があるが、この張設
作業を円滑に行なうため、図示した実施例に於てはレバ
ー７１を利用するようになっている。レバー７１は、第
２図中に点線で示す如く、ケーシング７ａの左側壁面と
右側壁面（第１図に於ては手前側壁面と背面側壁面）に
それぞれ回動自在に軸支された一対のアームと、その先
端に取り付けられたローラ７ｊとから成り、一方のアー
ムの軸支部分にはウオームホイール７ｋが取り付けられ
、これに噛み合うウオームギア７Ｉ１１をモータ７ｎで
正逆転させることにより、レバー７１が第１図中時計回
り方向或いは反時計回り方向に回動せしめられるように
なっている。After replacing the electrode guide with a new one, it is necessary to properly stretch the tape electrode 5 on the molded surface of the new electrode guide, but in order to perform this tensioning work smoothly, in the illustrated embodiment, A lever 71 is used. As shown by the dotted line in FIG. 2, the lever 71 has a pair of shafts rotatably supported on the left and right side walls (the front side wall and rear side wall in FIG. 1) of the casing 7a, respectively. It consists of an arm and a roller 7j attached to the tip of the arm, and a worm wheel 7k is attached to the shaft support portion of one arm. By rotating the worm gear 7I11 meshing with the worm wheel 7k in the forward and reverse directions with the motor 7n, the lever 71 is moved to the third position. It can be rotated clockwise or counterclockwise in Figure 1.
而して、加工中は、第１図に示す如く上記レバー７ｉを
加工位置から離れた位置に引き上げてお（ものであるが
、前記の如く電極案内体を交換してその先端部の成形面
にテープ電極を張設する際には、第４図に示す如く、レ
バー７１を下方へ引き降ろし適宜の範囲内で左右に揺動
させながら新たな電極案内体を送出、降下させるもので
ある。然るときは、テープ電極５はレバー７ｉの２本の
アームの間に挟まれた状態でローラ７ｊに引っ掛かり、
ここへ電極案内体が進出してその先端の成形面がテープ
電極５を介してローラ７ｊに当接するため、テープ電極
の張設が的確に行なわれ得るものである。During machining, the lever 7i is pulled up to a position away from the machining position as shown in FIG. When applying a tape electrode to the electrode, as shown in FIG. 4, the lever 71 is pulled down and swung from side to side within an appropriate range, while a new electrode guide is sent out and lowered. When the tape electrode 5 is caught between the two arms of the lever 7i and caught on the roller 7j,
Since the electrode guide advances here and the molded surface at its tip abuts against the roller 7j via the tape electrode 5, the tape electrode can be stretched accurately.
このとき、キャプスタン１５及びピンチローラ１６を加
工のときとは反対方向に回転させ、テープ電極５を一旦
第４図に示す如く幾分余裕をもって垂れ下がらせ、然る
のちレバー７１を前記の如く揺動させながらキャプスタ
ン１５を前記とは逆方向へ回転させてテープ電極を次第
に引き取るようにすれば、テープ電極の張設が円滑に行
なわれる。At this time, the capstan 15 and the pinch roller 16 are rotated in the opposite direction to the direction used during machining, the tape electrode 5 is allowed to hang down with some margin as shown in FIG. 4, and then the lever 71 is rotated as described above. If the capstan 15 is rotated in the opposite direction to that described above while being oscillated and the tape electrode is gradually pulled out, the tape electrode can be stretched smoothly.
第５図には、本発明に係る上記の如き放電加工装置を用
いた加工の一例が示されており、この場合、被加工体１
に対して、先ず第３図に示す電極案内体６ａを用いて加
工面１ａの加工を行ない、次に電極案内体６ｂに交換し
て加工面１ｂの加工を行ない、然るのち電極案内体６ｅ
に交換して加工面１ｅの加工を行なったもので生る。上
記の各電極案内体の交換作業は自動的に行なわれるので
、加工の途中で操作員が交換作業を行なうことなく、複
雑な加工形状を長時間にわたって無人で処理し得るもの
である。FIG. 5 shows an example of machining using the above-described electric discharge machining apparatus according to the present invention, in which a workpiece 1
First, the electrode guide 6a shown in FIG. 3 is used to machine the machined surface 1a, then the electrode guide 6b is used to machine the machined surface 1b, and then the electrode guide 6e is used to machine the machined surface 1b.
It is produced by replacing the machined surface 1e with the machined surface 1e. Since the above-mentioned replacement work of each electrode guide body is performed automatically, complicated machined shapes can be processed unattended for a long time without an operator having to perform replacement work during the process.
なお、電極案内体を交換するだけでなく、電極送出位置
調節筺体１２及び／又は電極引取位置調節筺体１７（第
１図参照）を、それぞれに対応するモータ１３または１
８を回転させることによりガイドレール１４． １４．
１９．１９に沿って図中左右方向に移動させ、電極案内
体に対するテープ電極の張設角度を変更するようにすれ
ば、更に多くの加工形状に対応できる。In addition to replacing the electrode guide, the electrode delivery position adjustment housing 12 and/or the electrode withdrawal position adjustment housing 17 (see FIG. 1) can be replaced with the corresponding motor 13 or 1.
By rotating the guide rail 14. 14.
By moving the tape electrode horizontally in the figure along the line 19.19 to change the tension angle of the tape electrode with respect to the electrode guide, more shapes can be processed.
なお、電極案内体の交換時に駆動すべきアクチュエータ
７ｂ、 ７ｇ、モータ１ｍ、ピンチローラ１５等の作動
、或いはモータ１３．１８等の作動は、電極案内体と被
加工体間の加工送りと関連させて制御する必要があり、
従って、それらの作動はｘ、 ｙ、ｚ軸方向の加工送り
を制御する数値制御装置からの指令に基づき制御される
ものである。Note that the operation of the actuators 7b, 7g, motor 1m, pinch roller 15, etc., or the operation of the motor 13, 18, etc. to be driven when replacing the electrode guide is related to the machining feed between the electrode guide and the workpiece. It is necessary to control
Therefore, these operations are controlled based on commands from a numerical control device that controls machining feed in the x, y, and z axis directions.
本発明は紅玉の如く構成されるので、本発明によるとき
は、それぞれ異なった成形面を有する複数の電極案内体
を自動的に交換しつ＼、複雑な加工形状を長時間にわた
って無人で処理し得る作業能率の高い放電加工装置が提
供されるものである。Since the present invention is structured like a red ball, when using the present invention, a plurality of electrode guide bodies each having a different molding surface can be automatically replaced, and complex machining shapes can be processed unattended over a long period of time. Therefore, an electric discharge machining apparatus with high working efficiency is provided.
なお、本発明の構成は紅玉の実施例に限定されるもので
はない。即ち、例えば、電極案内体の形状、配置及びこ
れに張設されるワイヤ電極の張設形態等は、加工形状そ
の他の加工条件に応じて適宜変更されるものであり、ま
た、各案内体を交換するための駆動手段も、油圧アクチ
ュエータに限定されることなくモータその他の駆動装置
を利用し得るものであり、歯車その他の伝達機構を介し
て作動させることも可能である。また、上記実施例に於
ては、消耗したワイヤ電極を回収ドラム２０を用いて回
収するよう構成したが、回収箱等を備えておきこれに回
収したり、或いは適宜切断廃棄するように構成しても良
い。従って、本発明はその目的の範囲内で当業者が容易
に想到し得る総ての変更実施例を包摂するものである。Note that the configuration of the present invention is not limited to the embodiment of the red ball. That is, for example, the shape and arrangement of the electrode guide body, the tension form of the wire electrode stretched thereon, etc. are changed as appropriate depending on the machining shape and other machining conditions, and each guide body is The driving means for replacement is not limited to a hydraulic actuator, but may also be a motor or other driving device, and can also be actuated via a gear or other transmission mechanism. Further, in the above embodiment, the exhausted wire electrode is collected using the collection drum 20, but it is also possible to provide a collection box or the like and collect it in this, or to cut it and dispose of it as appropriate. It's okay. Accordingly, the present invention encompasses all modifications that can be easily conceived by those skilled in the art within the scope of the invention.
第１図は本発明に係る放電加工装置の一実施例の要部を
示す説明図、第２図は第１図中■−■線に沿った断面図
、第３図は本発明に係る放電加工装置に用いられる電極
案内体の幾つかの例を示す説明図、第４図は第１図及び
第２図に示した放電加工装置の作動を示す説明図、第５
図は本発明に係る放電加工装置を用いた加工例を示す説
明図である。
１−−−−−ｍ−・−−−−−−一一一−−−−−−被
加工体２−−−一・−−−−−−一−・−一−−−・・
・−加工ヘッド３−−−−・・・−−一−−・・・−・
−・−ステム４・−・−−−−・−−−−−−−一−−
−−−−−−モータ５−−−−−・−・・−−−−・−
・−−一−−−−−テープ電極６８〜６ｅ・−−−−−
・・・−−−一−−−・・電極案内体７−−−−−−−
−一−−−−−−−−一電極案内体交換装置１ａ＝ −
−−−−−−一・・−ケーシング７ｂ−−−−−−−−
−−−−−アクチュエータ１ｃｍ−−−−−−−−−−
−一押圧板７ｄ−−−−−−−−−−−−−−・・ロン
ド１ｅ−−−−−−−−−−−−−一押圧板７ｆ’−・
−一−−−−−−−−−−−−−−スプリング７ｇ−−
−−−−−−一・−−−−−−−アクチュエータ７ｈ−
−一−−ｍ−−・・−・−−−−−−チャック７ ｉ−
−−−−−−−−レバー
７ｊ −−−−−−−−−−−−・ローラ７に−−−−
−−−−−−−−−ウオームホイール１ｍ−−−−−−
−−−−−−ウオームギア７ｒｒ−−−−−−−−−＝
−−−−モータ８−−−−−−−−−−−−−−−テー
プ電極供給ドラム９−−−−一・−−−−−−−−一−
−−−−−−制動ローラ１０、 １０−・−−−−−−
−−−−−−−一−−ガイドローラ１１、１１−−−−
−−−−−一通電ピン１２−−−−−−−−一−−−−
−−一電極送出位置開節筺体１３−−−−−−−−−−
−−−−−・−−−−−モータ１４、 １４−・−−−
−・・−−−一−−・−ガイドレール１５−−−一−−
−−−−−−−−−・・−−−−・・・キャプスタン１
６− ・−一−−・−−−−−・・・・−・−ピンチロ
ーラ１７・・・−−−−ｍ−・・−−−−−−一−−・
−・・電極引取位置調節筺体１８−・−−−−−−・−
一−−−−−−−−−−−・モータ１９、 １９−−−
−−−−−・−−−−−−−ガイドレール２０−・−−
−−一−−−−−−−−−・−・−電極回収ドラム２１
−・−・−一−−−−−−−−−−−・・−ポンプ２２
、２３−−−−−−−−−−−−・−４ボ一ト３位置切
換弁２４−−− −−−−一・−一一−−−−−−−−
−−−オイルタンク特許出願人 株式会社 井上ジャパ
ンクス研究所代理人（７５２４）最上正太部FIG. 1 is an explanatory diagram showing the main parts of an embodiment of the electrical discharge machining apparatus according to the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. FIG. 4 is an explanatory diagram showing some examples of electrode guide bodies used in the machining device; FIG. 4 is an explanatory diagram showing the operation of the electrical discharge machining device shown in FIGS. 1 and 2;
The figure is an explanatory view showing an example of machining using the electric discharge machining apparatus according to the present invention. 1------m-・------1-1------ Worked object 2---1・-----1--1--1--
・−Processing head 3−−−−・・・−−1−−・・・−・
−・−Stem 4・−・−−−−・−−−−−−−1−−
−−−−−−Motor 5−−−−−・−・・−−−−・−
・--1-----Tape electrodes 68 to 6e・----
...----1---- Electrode guide 7------
−1−−−−−−−One electrode guide exchange device 1a=−
---------1...-Casing 7b----
------Actuator 1cm----
-One pressure plate 7d--------------...Rondo 1e---One pressure plate 7f'--
−1−−−−−−−−−−−−−−Spring 7g−−
−−−−−−1・−−−−−−Actuator 7h−
-1--m--・・-・--Chuck 7 i-
−−−−−−−− Lever 7j −−−−−−−−−−−−・Roller 7 −−−
------------ Worm wheel 1m------
−−−−−−Worm gear 7rr−−−−−−−−=
---Motor 8----------Tape electrode supply drum 9--1・-----1-
--------Brake roller 10, 10-・---------
---------1--Guide rollers 11, 11----
-------1 energizing pin 12---------1--
--One electrode delivery position open housing 13------
-------・----Motor 14, 14-・----
−・・−−−1−−・−Guide rail 15−−−1−−
−−−−−−−−−・・−−−−・Capstan 1
6-・−1−−・−−−−−・・・・−・−Pinch roller 17・・・−−−−m−・・−−−−−−1−−・
---Electrode take-up position adjustment housing 18----------
1----------Motor 19, 19--
−−−−−・−−−−−−Guide rail 20−・−−
----------------electrode collection drum 21
−・−・−1−−−−−−−−−−−・・−Pump 22
, 23---------------4-point 3-position switching valve 24-------1.--11--------
--- Oil tank patent applicant Inoue Japanx Research Institute Agent (7524) Shotabe Mogami
Claims (1)
対して所定の加工間隙を保って対向せしめられる電極案
内体の上記成形面に沿って、テープ電極、網状電極、ワ
イヤ電極等の細長い長尺の電極体を走行せしめつ一加工
を行なう放電加工装置に於て、それぞれ異なった形状の
成形面を有する複数の電極案内体を収納し、それらのう
ちから必要なものを予め定められたプログラムに従って
所望の順序で選択し、これを順次上記被加工体に対向せ
しめる電極案内体交換装置を備えた上記の放電加工装置
。 ２）上記電極案内体の交換を、上記電極案内体と被加工
体間の加工送りを制御する数値制御装置によって上記加
工送りと関連させて制御する特許請求の範囲第１項記載
の放電加工装置。[Claims] 1) A tape electrode is formed along the forming surface of an electrode guide body that has a forming surface according to a desired processing shape and is opposed to the workpiece with a predetermined processing gap. In electrical discharge machining equipment that performs machining by running a long and thin electrode body such as a mesh electrode or a wire electrode, a plurality of electrode guide bodies each having a molding surface of a different shape are housed, and one of them is The electrical discharge machining apparatus described above is equipped with an electrode guide changing device that selects necessary items from among them in a desired order according to a predetermined program and sequentially causes the selected items to face the workpiece. 2) The electric discharge machining apparatus according to claim 1, wherein the exchange of the electrode guide is controlled in conjunction with the machining feed by a numerical control device that controls the machining feed between the electrode guide and the workpiece. .
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6735184A JPS60213431A (en) | 1984-04-06 | 1984-04-06 | Electric discharge machining device |
| DE8484302668T DE3461752D1 (en) | 1983-04-22 | 1984-04-19 | A machining centre |
| EP84302668A EP0125812B1 (en) | 1983-04-22 | 1984-04-19 | A machining centre |
| DE198484302668T DE125812T1 (en) | 1983-04-22 | 1984-04-19 | MACHINING CENTER. |
| US06/603,121 US4584451A (en) | 1983-04-22 | 1984-04-23 | Wire EDM with guide member changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6735184A JPS60213431A (en) | 1984-04-06 | 1984-04-06 | Electric discharge machining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60213431A true JPS60213431A (en) | 1985-10-25 |
Family
ID=13342507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6735184A Pending JPS60213431A (en) | 1983-04-22 | 1984-04-06 | Electric discharge machining device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60213431A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129122A (en) * | 1997-09-01 | 1999-05-18 | Denso Corp | Wire electric discharge machining device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5184494A (en) * | 1975-01-22 | 1976-07-23 | Mitsubishi Metal Corp | FUKUZATSU NAKEIJOOJUSURU KIKAIBUHINNOKAKOHOHO |
| JPS5329942A (en) * | 1975-01-06 | 1978-03-20 | Alberto Culver Co | Hair pretratment compound and hair treatment process |
-
1984
- 1984-04-06 JP JP6735184A patent/JPS60213431A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5329942A (en) * | 1975-01-06 | 1978-03-20 | Alberto Culver Co | Hair pretratment compound and hair treatment process |
| JPS5184494A (en) * | 1975-01-22 | 1976-07-23 | Mitsubishi Metal Corp | FUKUZATSU NAKEIJOOJUSURU KIKAIBUHINNOKAKOHOHO |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129122A (en) * | 1997-09-01 | 1999-05-18 | Denso Corp | Wire electric discharge machining device |
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