JPH0430913A - Upper liquid supply device for wire-cut electric discharge machine - Google Patents

Upper liquid supply device for wire-cut electric discharge machine

Info

Publication number
JPH0430913A
JPH0430913A JP13644590A JP13644590A JPH0430913A JP H0430913 A JPH0430913 A JP H0430913A JP 13644590 A JP13644590 A JP 13644590A JP 13644590 A JP13644590 A JP 13644590A JP H0430913 A JPH0430913 A JP H0430913A
Authority
JP
Japan
Prior art keywords
wire
supply device
machining
nozzle
opening
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
Application number
JP13644590A
Other languages
Japanese (ja)
Other versions
JP2889898B2 (en
Inventor
Jun Hayakawa
順 早川
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.)
Japax Inc
Original Assignee
Japax 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 Japax Inc filed Critical Japax Inc
Priority to JP13644590A priority Critical patent/JP2889898B2/en
Publication of JPH0430913A publication Critical patent/JPH0430913A/en
Application granted granted Critical
Publication of JP2889898B2 publication Critical patent/JP2889898B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

PURPOSE:To prevent working liquid from dripping from an upper liquid supply device at the time of automatic wire electrode threading and so on, by providing the body of a nozzle device with an air duct to communicate an interior space in the body and exterior and by providing this air duct with a switching means. CONSTITUTION:When a piston rod 34 is moved up by a cylinder 33, a plug 31 is pushed up by the piston rod 34 opening the opening 35, which is blockaded by the plug 31. As a result, an interior space 3 communicates outside air through an air duct 30. In this case, when the plug 31 is pushed up by means of the piston rod 34 by actuating the cylinder 33, the interior space 3 communicates outside air through the air duct 30 having a large cross sectional area. As a result, the residual working liquid in a body 1 quickly flows down. This constitution eliminates the bad influence caused by the working liquid dripping from the main nozzle 20 at the time of the next automatic wire electrode threading and when giving the wire perpendicularity or positioning the end face of a workpiece.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、中央にワイヤガイドを有するワイヤ電極(以
下ワイヤと称す)方向規制用加工液を噴出するシェツト
ノズルを備え、該シェツトノズルを囲むように加工時に
水等の加工液を噴出する主ノズルを備えた密閉形のワイ
ヤカット放電加工用上部給液装置に関する。
Detailed Description of the Invention (Industrial Application Field) The present invention includes a shet nozzle that spouts machining fluid for regulating the direction of a wire electrode (hereinafter referred to as wire) having a wire guide in the center, and The present invention relates to a closed type upper liquid supply device for wire-cut electrical discharge machining, which is equipped with a main nozzle that spouts machining liquid such as water during machining.

(従来の技術) ワイヤカット放電加工装置は、上部給液装置のノズルか
らワイヤを押し出しつつ、加工液を噴出し、ワイヤの周
囲を加工液て満たしなから被加工物に貫通してその下部
のワイヤ引き出し装りより引き出し、ワイヤと被加工物
との間に間歇的な電圧パルスを印加して加工を行なうも
のである。このようなワイヤカット放電加工装置におい
て、上部給液装置は、中央にワイヤガイドを有しかつ作
業開始や!Ir&!時に垂直にワイヤを押し出すための
方向規制用加工液を噴出するシェツトノズルと、該シェ
ツトノズルを囲むように加工時に加工液を噴出する主ノ
ズルとを備えている。
(Prior art) A wire-cut electric discharge machining device expels machining fluid while pushing out the wire from the nozzle of the upper fluid supply device, fills the area around the wire with machining fluid, and then penetrates into the workpiece and drains the lower part of the wire. The wire is drawn out from a wire drawing device and processed by applying intermittent voltage pulses between the wire and the workpiece. In such a wire-cut electrical discharge machining device, the upper liquid supply device has a wire guide in the center, and when the work starts! Ir&! The wire is provided with a shet nozzle that spouts a direction regulating machining fluid for extruding the wire vertically during machining, and a main nozzle surrounding the shet nozzle that spouts machining fluid during machining.

(発明か解決しようとする課題) このようなワイヤカット放電加工装置においては、高速
加工のため、上部給液装置からの加工液の噴出速度も高
くしなければならず、このため、高圧の加工液を使用す
る関係上、上部給液装置のボディも密閉形にしている。
(Problem to be solved by the invention) In such a wire-cut electrical discharge machining device, for high-speed machining, the spouting speed of machining fluid from the upper fluid supply device must also be high, and therefore, high-pressure machining is required. Because liquid is used, the body of the upper liquid supply device is also sealed.

このため、中央のシェツトノズルからワイヤの方向規制
用加工液を噴出することにより、ワイヤの垂直性を保持
して被加工物の加ニスタート穴に挿通する際に、ボディ
内に残留する加工液か、シェツトノズルの周囲の主ノズ
ルから長い時間したたり、そのしたたる加工液によりシ
ェツトノズルからのジェット流か乱れ、ワイヤの方向か
加ニスタート穴からそれてしまうおそれかあるという問
題点かあった。
For this reason, by spouting machining liquid for regulating the wire direction from the central shet nozzle, the machining liquid remaining in the body can be avoided when the wire is inserted vertically into the machining start hole of the workpiece. There was a problem that the dripping liquid from the main nozzle around the shet nozzle for a long time disturbed the jet flow from the shet nozzle, and there was a risk that the wire could deviate from the machining start hole.

また、加工台上にセットされる基準フロックの垂直面等
にワイヤな当接することによりワイヤの垂直出しを行な
う場合や、ワイヤに被加工物の端面を当接して加工の基
準となる位置を出す端面位置出しを行なう際、主ノズル
よりしたたる加工液により、計測誤差を生じるという問
題点かある。
In addition, the wire can be brought out vertically by touching the vertical surface of a reference flock set on the processing table, or the end surface of the workpiece can be brought into contact with the wire to find the position that will serve as the reference for processing. When performing end face positioning, there is a problem in that measurement errors occur due to machining fluid dripping from the main nozzle.

本発明は、上述の問題点に鑑み、前記ワイヤ自動挿通時
等における上部給液装置からの水垂れを防止てきる構成
のワイヤカット放電加工用上部給液装置を提供すること
を目的とする。
In view of the above-mentioned problems, an object of the present invention is to provide an upper liquid supply device for wire cut electrical discharge machining that is configured to prevent water from dripping from the upper liquid supply device during automatic wire insertion.

(課題を解決するための手段) 本発明は、前記目的を達成するため、中央にワイヤガイ
ドを有するワイヤ方向規制用加工液を噴出するジェット
ノズルと、該ジェットノズルを囲むように加工時に加工
液を噴出する主ノズルとを備えた密閉形のワイヤカット
放電加工用上部給液装置において、ノズル装置のボディ
に、該ボディの内空部と外部とを連絡する空気通路を設
け、該空気通路に開閉手段を設けたことを特徴とする。
(Means for Solving the Problems) In order to achieve the above object, the present invention provides a jet nozzle that has a wire guide in the center and that spouts a machining fluid for regulating the wire direction, and a machining fluid that surrounds the jet nozzle during machining. In a closed-type upper fluid supply device for wire-cut electrical discharge machining, which is equipped with a main nozzle that spouts fluid, an air passage is provided in the body of the nozzle device to communicate between the inner cavity of the body and the outside, and the air passage is It is characterized by having an opening/closing means.

(作用) 本発明は、上記構成を有するのて、ワイヤ自動挿通や垂
直出し、あるいは被加工物の端面位置出しの前に、前記
開閉手段を手動または自動により開いて前記ボディ内空
部を外気に連通させ、必要に応して外気を内空部へ圧入
してボディ内部の加工液を全部流出させる。
(Function) With the above configuration, the present invention opens the opening/closing means manually or automatically to open the internal space of the body to outside air before automatic wire insertion, vertical wire removal, or positioning of the end face of the workpiece. If necessary, outside air is forced into the inner cavity to drain all the machining liquid inside the body.

(実施例) 第1図は本発明によるワイヤカット放電加工用上部給液
装置の一実施例を示す縦断面図、第2図は第1図のE−
E断面図である。1は上部給液装置のボディてあり、該
ボディ1は、中央フロックlaと、これらの左右にシー
ル材2a、2b、2Cを介して気水密に組合わされた左
右のブロック1b、1cと、これらのブロック1a〜l
cの北面にシール材2dを介して固定された第1上部ブ
ロックldと、その上に気水密構造で重ねられた第2上
部ブロック1eとからなり、該ボディl内に内空部3か
形成され、該内空部3に、ワイヤ(図示せず)に接触し
て給電する半円形の通電コマ4aか、予備の通電コマ4
bと共に中央超硬カラム4cを抱持してOリング5によ
り一体的に結合して収容され、中央超硬カラム4cに設
けた溝6と通電コマ4aとの間にワイヤを通してワイヤ
に通電する。通電コマ4a、4b上には1通電コマ4a
に対するワイヤの押し付は力を調整するサッカイト7を
保持したフロック8かボルト9により取付けられている
(Example) Fig. 1 is a longitudinal cross-sectional view showing an embodiment of the upper liquid supply device for wire-cut electric discharge machining according to the present invention, and Fig. 2 is a longitudinal sectional view showing an embodiment of the upper liquid supply device for wire-cut electric discharge machining according to the present invention.
It is an E sectional view. Reference numeral 1 designates the body of the upper liquid supply device, and the body 1 includes a central flock la, left and right blocks 1b and 1c air- and water-tightly combined with each other through sealing materials 2a, 2b, and 2C on the left and right sides of these blocks. Blocks 1a-l
The first upper block ld is fixed to the north face of the body l through a sealing material 2d, and the second upper block 1e is stacked thereon in an air-tight structure, and an inner cavity 3 is formed in the body l. A semicircular energizing piece 4a that contacts a wire (not shown) to supply electricity or a spare energizing piece 4 is placed in the inner space 3.
A wire is passed between the groove 6 provided in the central carbide column 4c and the current-carrying piece 4a, and the wire is energized. There is one energizing piece 4a on the energizing pieces 4a and 4b.
The wire is pressed against the bolt 9 by a bolt 9 or a flock 8 holding a saccite 7 for adjusting the force.

前記サフガイト7を保持したフロック8のワイヤ挿通穴
10の上面には、第1上部フロック1dに固定して、ワ
イヤガイド11か取付けられ、第2上部フロックleに
は、例えば直径0.5〜0.7mm程度のワイヤ挿通穴
を有するシールタイス13と、該タイス13から出たワ
イヤを前記ワイヤガイド11に導くガイド筒12か取付
けられている。
A wire guide 11 is fixed to the first upper flock 1d and attached to the upper surface of the wire insertion hole 10 of the flock 8 holding the saf guide 7, and the second upper flock le has a diameter of 0.5 to 0. A seal tie 13 having a wire insertion hole of about .7 mm and a guide tube 12 for guiding the wire coming out of the tie 13 to the wire guide 11 are attached.

前記中央フロックlaの下部中央には、円形ブロック1
4か取付けられ、該円形ブロック14には、ワイヤ位置
決め用タイス15と、該タイス15を囲むように設けら
れた円錐形のシェツトノズル16と、該シェツトノズル
16および前記タイス15をブロック14に固定するホ
ルタ17と、前記タイス15にワイヤを導くガイド筒1
8とか取付けられている。
At the center of the lower part of the center flock la is a circular block 1.
4 are attached to the circular block 14, a tie 15 for wire positioning, a conical shet nozzle 16 provided to surround the tie 15, and a holster for fixing the shet nozzle 16 and the tie 15 to the block 14. 17, and a guide tube 1 for guiding the wire to the tie 15.
8 is installed.

また、前記中央ブロックlaの下部中央には、前記ジェ
ットノズル16を間隙を介して囲むように、円錐形の主
ノズル20か、ホルダ21により取付けられている。
Further, a conical main nozzle 20 or a holder 21 is attached to the center of the lower part of the central block la so as to surround the jet nozzle 16 with a gap therebetween.

第2図に示すように、前記第1、第2の上部ブロックl
d、leには、加工液を内空部3に導入する加工液通路
23か設けられ、内空部3内に導入された加工液は、一
部前記超硬カラム4Cの溝10を通り、他の多くは通電
コマ4a、4b間を通り、その下の加工液通路24を通
り、一部はガイド筒18、ジェットノズル16を通り、
他の大部分は穴25を通り、主ノズル20より噴出する
As shown in FIG. 2, the first and second upper blocks l
A machining fluid passage 23 for introducing machining fluid into the inner space 3 is provided in d and le, and a part of the machining fluid introduced into the inner space 3 passes through the groove 10 of the carbide column 4C. Most of the others pass between the energized pieces 4a and 4b, and the machining liquid passage 24 below them, and some of them pass through the guide tube 18 and the jet nozzle 16.
Most of the other part passes through the hole 25 and is ejected from the main nozzle 20.

また、ワイヤ自動挿通時にジェットノズル16から加工
液を噴出するため、第1図に示すように、前記加工液通
路24と連絡しない加工液通路26を中央ブロック1a
に設け、該加工液通路26は、第2図に示すフロック1
4に設けた加工液通路27に連通し、該加工液通路27
はシェツトノズル16の内部に連通している。
In addition, in order to eject machining fluid from the jet nozzle 16 during automatic wire insertion, as shown in FIG.
The machining fluid passage 26 is provided in the floc 1 shown in FIG.
The machining fluid passage 27 is connected to the machining fluid passage 27 provided in
communicates with the interior of the shet nozzle 16.

30は本発明により内空部3と外気を連通ずるため、上
部ブロックld、leに設けられた空気通路、31は該
空気通路30を連通、遮断する開閉手段として設けられ
た栓である。栓31は押しばね32により空気通路30
の開口部35を常時閉塞するように取付けられている。
Reference numeral 30 designates an air passage provided in the upper blocks ld and le in order to communicate the inner space 3 with outside air according to the present invention, and 31 represents a plug provided as an opening/closing means for communicating and blocking the air passage 30. The plug 31 is connected to the air passage 30 by the push spring 32.
The opening 35 of the opening 35 is always closed.

33は栓31開閉用液圧または空気圧シリンダであり、
該シリンダ33は中央ブロックlaに取付けられている
。該シリンダ33において、作動流体の供給によりピス
トンロッド34を上動させると、ピストンロット34に
より栓31が押し上げられて栓31か閉塞していた開口
部35か開き、内空部3と外気とが空気通路30を介し
て連通し、ピストンロット34を下動させると、押しば
ね32の力で栓31により開口部35か閉しる構成であ
る。
33 is a hydraulic or pneumatic cylinder for opening and closing the stopper 31;
The cylinder 33 is attached to the central block la. In the cylinder 33, when the piston rod 34 is moved upward by the supply of working fluid, the plug 31 is pushed up by the piston rod 34, and the plug 31 opens the previously closed opening 35, allowing the inner space 3 to connect with the outside air. They communicate through an air passage 30, and when the piston rod 34 is moved downward, the opening 35 is closed by the stopper 31 by the force of the push spring 32.

この実施例において、高圧加工液を前記加工液通路23
を通してボディl内の内空部3に導入し、主ノズル20
から噴出しながら加工を行なった後1次の加工に移行す
る場合、加工液通路23からの加工液を遮断しても、内
空部3は、シールダイス13と、下部の主ノズル20等
を介してしか連通していないため、ボディ1内の加工液
は長い時間にわたって主ノズル2oからしたたることに
なる。
In this embodiment, the high pressure machining fluid is supplied to the machining fluid passage 23.
through the main nozzle 20 into the inner cavity 3 in the body l.
When moving to the primary machining after machining is performed while spouting from Since the main nozzle 2o communicates only through the main nozzle 2o, the machining fluid in the body 1 drips from the main nozzle 2o for a long time.

ここて、シリンダ33を作動させて栓31をピストンロ
ット34により押し上げ、空気通路30を介して内空部
3を広い断面積を介して連通させることにより、ボディ
l内に残留している加工液かすみやかに流下する。従っ
て、次のワイヤ自動挿通時、ワイヤ垂直出し、または被
加工物の端面位置出しの際の主ノズル20からの加工液
のしたたりによる悪影響を無くすることかてきる。
At this point, by operating the cylinder 33 and pushing up the plug 31 by the piston rod 34, the inner space 3 is communicated with the air passage 30 through a wide cross-sectional area, thereby removing the machining fluid remaining in the body l. Flowing down in a haze. Therefore, it is possible to eliminate the adverse effects caused by dripping of machining liquid from the main nozzle 20 when the wire is automatically inserted next time, when the wire is taken out vertically, or when the end face of the workpiece is positioned.

上記実施例は、空気通路30を単に連通ずることにより
、ボディl内に残留する加工液を流下させることとした
か、単に連通させるのみてなく。
In the above embodiments, the machining liquid remaining in the body 1 is caused to flow down by simply communicating the air passage 30, or it is not only made to communicate with the air passage 30.

例えば第1図に示すように、コンプレッサ37等より圧
搾空気38を開口部35がら空気通路30を通して強制
的に導入することにより、主ノズル20の下部等に残留
している加工液39か空気流により押し出されてより迅
速に残留加工液の流出を行なえる。
For example, as shown in FIG. 1, by forcibly introducing compressed air 38 from a compressor 37 or the like through the air passage 30 through the opening 35, the machining fluid 39 remaining in the lower part of the main nozzle 20, etc. is removed from the air flow. The remaining machining fluid can be expelled more quickly.

その他、本発明の要旨を逸脱しない範囲において、上記
実施例以外に種々の変更、付加か可能であることは云う
までもない。
It goes without saying that various other changes and additions can be made to the embodiments described above without departing from the gist of the present invention.

(発明の効果) 請求項1によれば、ワイヤカット作業の移行に当たり、
上部給液装置のボディ内に残留する加工液を、ボディの
内空部を外部に連通させることにより、迅速に排出しう
る・ようにしたので、ワイヤ自動挿通時、ワイヤ垂直出
し、または被加工物の端面位置出しの際の主ノズルから
の加工液のしたたりによる悪影響(ワイヤの押し出し時
の曲かりによるワイヤの自動挿通の失敗、ワイヤの垂直
出しの失敗、測定誤差の発生による加工ミス等)を無く
することかでき、かつ作業の段取りを迅速に行なうこと
かてきる。
(Effect of the invention) According to claim 1, upon transition of wire cutting work,
The machining fluid remaining in the body of the upper liquid supply device can be quickly discharged by communicating the inner cavity of the body with the outside, so it can be easily drained when automatically inserting the wire, vertically pulling out the wire, or being machined. Adverse effects due to dripping of machining fluid from the main nozzle when positioning the end face of the object (failure to automatically insert the wire due to bending during extrusion, failure to eject the wire vertically, machining errors due to measurement errors, etc.) ) can be eliminated and work setups can be done quickly.

請求項2によれば、ボディ内と外気とを連通ずる空気通
路の開閉手段にアクチュエータを設けたのて、自動開閉
か可能となり、開閉手段を手動操作する必要かなく、実
用上至便である。
According to claim 2, by providing an actuator in the opening/closing means of the air passage that communicates the inside of the body with the outside air, automatic opening/closing is possible, and there is no need to manually operate the opening/closing means, which is convenient in practice.

請求項3によれば、ボディからの加工液の排出をより迅
速に行なうことかてきる。
According to claim 3, the machining fluid can be discharged from the body more quickly.

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

第1図は本発明による上部給液装置の一実施例を示す縦
断面図、第2図は第1図のE−E断面図である。 1:ボディ、2a〜2d:シール材、3:内空部、4a
、4b:通電コマ、7:サブガイド、10:穴、11:
ワイヤガイト、12.ガイド筒、13・シールタイス、
15:タイス、16:シェツトノズル、18:ホルタ、
20:主ノズル、21:ホルタ、23.24:加工液通
路、25:穴、26.27:ジェットノズル噴出加工液
通路、30:空気通路、31:栓、32:押しばね、3
3:シリンタ、34゛ピストンロツト、37:コンプレ
ッサ 時計出願人 ジャッパクス株式会社
FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the upper liquid supply device according to the present invention, and FIG. 2 is a cross-sectional view taken along the line EE in FIG. 1: Body, 2a to 2d: Seal material, 3: Inner space, 4a
, 4b: Energizing piece, 7: Sub guide, 10: Hole, 11:
Wire guide, 12. Guide cylinder, 13・Seal tie,
15: Tice, 16: Shet nozzle, 18: Horta,
20: Main nozzle, 21: Holter, 23.24: Machining fluid passage, 25: Hole, 26. 27: Jet nozzle jet machining fluid passage, 30: Air passage, 31: Plug, 32: Pressing spring, 3
3: Cylinder, 34゛Piston rod, 37: Compressor clock applicant Jappax Co., Ltd.

Claims (1)

【特許請求の範囲】 1、中央にワイヤガイドを有するワイヤ電極方向規制用
加工液を噴出するジェットノズルと、該ジェットノズル
を囲むように加工時に加工液を噴出する主ノズルとを備
えた密閉形のワイヤカット放電加工用上部給液装置にお
いて、ノズル装置のボディに、該ボディの内空部と外部
とを連絡する空気通路を設け、該空気通路に開閉手段を
設けたことを特徴とするワイヤカット放電加工用上部給
液装置。 2、前記開閉手段が自動開閉用アクチュエータを備えた
ものであることを特徴とする請求項1記載のワイヤカッ
ト放電加工用上部給液装置。 3、前記ボディの内空部に前記開閉手段を通して外気を
導入する空気供給装置を備えたことを特徴とする請求項
1または2記載のワイヤカット放電加工用上部給液装置
[Scope of Claims] 1. A closed type comprising a jet nozzle having a wire guide in the center and spouting machining fluid for regulating the direction of the wire electrode, and a main nozzle surrounding the jet nozzle and spouting machining fluid during machining. In the upper fluid supply device for wire-cut electric discharge machining, the body of the nozzle device is provided with an air passage that communicates the inner space of the body with the outside, and the air passage is provided with an opening/closing means. Upper liquid supply device for cut electrical discharge machining. 2. The upper fluid supply device for wire-cut electrical discharge machining according to claim 1, wherein the opening/closing means includes an actuator for automatic opening/closing. 3. The upper liquid supply device for wire-cut electric discharge machining according to claim 1 or 2, further comprising an air supply device for introducing outside air into the inner space of the body through the opening/closing means.
JP13644590A 1990-05-26 1990-05-26 Upper liquid supply device for wire cut electric discharge machining Expired - Fee Related JP2889898B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13644590A JP2889898B2 (en) 1990-05-26 1990-05-26 Upper liquid supply device for wire cut electric discharge machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13644590A JP2889898B2 (en) 1990-05-26 1990-05-26 Upper liquid supply device for wire cut electric discharge machining

Publications (2)

Publication Number Publication Date
JPH0430913A true JPH0430913A (en) 1992-02-03
JP2889898B2 JP2889898B2 (en) 1999-05-10

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ID=15175284

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
JP (1) JP2889898B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331129A (en) * 1991-03-27 1994-07-19 Fanuc Ltd. Upper guide assembly for a wire cut electric discharge machine
US6294748B1 (en) * 1998-05-28 2001-09-25 Mitsubishi Denki Kabushiki Kaisha Wire electrical discharge machine
JP2008137265A (en) * 2006-12-01 2008-06-19 Toyo Mach & Metal Co Ltd Display device of machine tool and display device of injection molding machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331129A (en) * 1991-03-27 1994-07-19 Fanuc Ltd. Upper guide assembly for a wire cut electric discharge machine
US6294748B1 (en) * 1998-05-28 2001-09-25 Mitsubishi Denki Kabushiki Kaisha Wire electrical discharge machine
JP2008137265A (en) * 2006-12-01 2008-06-19 Toyo Mach & Metal Co Ltd Display device of machine tool and display device of injection molding machine

Also Published As

Publication number Publication date
JP2889898B2 (en) 1999-05-10

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