JPS6346196Y2 - - Google Patents
Info
- Publication number
- JPS6346196Y2 JPS6346196Y2 JP1983011422U JP1142283U JPS6346196Y2 JP S6346196 Y2 JPS6346196 Y2 JP S6346196Y2 JP 1983011422 U JP1983011422 U JP 1983011422U JP 1142283 U JP1142283 U JP 1142283U JP S6346196 Y2 JPS6346196 Y2 JP S6346196Y2
- Authority
- JP
- Japan
- Prior art keywords
- wire electrode
- wire
- workpiece
- cleaning
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004140 cleaning Methods 0.000 claims description 42
- 238000003754 machining Methods 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 22
- 238000009763 wire-cut EDM Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000009760 electrical discharge machining Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、通電ピンとワイヤ電極との間で発
生して滞留する気泡を洗浄除去し、気泡の吸着を
除去したワイヤ電極を被加工物に供給するワイヤ
カツト放電加工装置に関する。[Detailed description of the invention] [Industrial application field] This invention cleans and removes air bubbles generated and retained between the current-carrying pin and the wire electrode, and applies the wire electrode from which air bubbles have been removed to the workpiece. The present invention relates to wire cut electric discharge machining equipment to be supplied.
従来、ワイヤカツト放電加工装置としては、例
えば第1図に示すようなものがある。このワイヤ
カツト放電加工装置は、ワイヤ電極2が図示しな
い装置本体のカラム等に設けたリールからブレー
キローキ等を介して繰り出され、アーム1の案内
ローラ11を介して下方に延び、下方にアーム1
に対向して設けた(図示しない)アームの案内ロ
ーラ、巻取ローラ及びカラム等本体の巻取リール
又は回収容器へと至るようになつている。しかし
て前記案内ローラ間の部分にあるワイヤ電極2
と、被加工物3との間に加工電源15より間歇的
な電圧パルスを印加し放電加工を行なうものであ
る。このワイヤカツト放電加工装置に於て、上方
に配設されたアーム1には、アーム1と略直交す
るように、且つ手動ハンドル又はモータ12によ
つて上下動位置決め設置自在に断面L字状の支持
部材13の上部が取付けられている。支持部材1
3の下部断面には、ワイヤ電極2と接触して加工
電源15の電圧パルスを印加するために設けられ
た超硬合金等からなる耐摩性で通常円柱状の通電
ピン4が取付けられ、この通電ピン4は前記案内
ローラ11と被加工物3との間の、略直線部分の
ワイヤ電極2に当接している。4Aは図示しない
支持手段により支持部材13に固定して設けられ
た、耐摩性の必要に応じて絶縁性の案内ピン又は
ローラであつて、該案内ローラ4Aによりワイヤ
電極2を通電ピンAに押付けてワイヤ電極2と通
電ピン4とが接触しながら移動する摺接移動が確
保される。又支持部材13の下端部には、中空円
筒状のノズル本体5が設けられ、その上端部等適
宜の部位が必要に応じ微小に位置を調整すること
が可能なようにして固着されている。このノズル
本体5の上下の端面には開口部51,52が形成
され、これら開口部51,52はノズル本体5の
略中心軸線部位に形成されていて、前記案内ロー
ラ11と被加工物3との間のワイヤ電極2が同軸
状に挿通するような位置関係に配置されている。
更にノズル本体5の内部には、上部位置決めガイ
ド61のガイドホルダ6が同軸状に挿設されてお
り、又上記下端面の開口部52にはノズル7が同
軸状で軸方向に移動自在に嵌設されている。ガイ
ドホルダ6は穴6aを有する筒体であり、下端部
にはダイス状の位置決めガイド61が取付けら
れ、このガイド61によつて被加工物3上部に於
けるワイヤ電極2の位置決めを図つている。この
ガイドホルダ6は、ノズル本体5に必要に応じて
微小位置調整可能に固着されている。又ノズル7
は、ノズル本体5の下部に配設され、ノズル本体
5の下端の開口部52に枢支され、供給される加
工液の圧力、流量及び被加工物3との距離等に応
じ上下動自在に嵌合している。又ノズル7は、所
望の軸方向長さ内径及び軸方向内径絞りを有する
中空円筒状体であり、ノズル本体5内に位置する
フランジ部の端部71の外径は、ノズル本体5の
下端部の開口部52の内径と略等しく形成され、
その端部71が開口部52の内壁に嵌合当接する
ことによつて、ノズル7がノズル本体5から脱落
するのを防いている。尚、ノズル本体5の上部側
の適宜の位置には加工液を加圧供給するホース5
3が取付けられ、ここから加工液がノズル本体5
内に供給され、内部に於て位置決めガイド61を
冷却し、下部のノズル7から被加工物3の加工部
へ噴出されると共に、上部の開口部51より上方
へ噴射して通電ピン4とワイヤ電極2との間にも
加工液を供給してワイヤ電極2及び通電ピン4を
冷却するようになつている。又被加工物3は、加
工テーブル31に固定され、加工テーブル31は
モータ32,33によつてワイヤ電極2の軸心と
直角な平面上を数値制御装置による制御の下に所
定の輪郭形状等に沿つて自在に移動できるように
なつている。
2. Description of the Related Art Conventionally, there is a wire cut electric discharge machining apparatus as shown in FIG. 1, for example. In this wire-cut electric discharge machining apparatus, a wire electrode 2 is unwound from a reel provided in a column or the like of the apparatus main body (not shown) via a brake roller or the like, extends downward via a guide roller 11 of an arm 1, and extends downward through a guide roller 11 of an arm 1.
A guide roller, a take-up roller, a column, etc. of an arm (not shown) provided opposite to the main body lead to the take-up reel or collection container of the main body. Therefore, the wire electrode 2 located between the guide rollers
Electrical discharge machining is performed by applying intermittent voltage pulses from a machining power supply 15 between the machine and the workpiece 3. In this wire cut electrical discharge machining apparatus, an arm 1 disposed above has an L-shaped support in cross section so as to be substantially orthogonal to the arm 1 and can be vertically moved and positioned by a manual handle or a motor 12. The upper part of member 13 is attached. Support member 1
A wear-resistant, usually cylindrical, current-carrying pin 4 made of cemented carbide or the like is attached to the lower cross section of the wire electrode 2 to apply voltage pulses from the machining power source 15 in contact with the wire electrode 2. The pin 4 is in contact with the wire electrode 2 in a substantially straight portion between the guide roller 11 and the workpiece 3. Reference numeral 4A denotes a guide pin or roller which is insulated as required for wear resistance and is fixed to the support member 13 by a support means (not shown), and the wire electrode 2 is pressed against the energizing pin A by the guide roller 4A. This ensures sliding movement in which the wire electrode 2 and the current-carrying pin 4 move while being in contact with each other. A hollow cylindrical nozzle body 5 is provided at the lower end of the support member 13, and its upper end and other appropriate parts are fixed in such a way that the position can be minutely adjusted as necessary. Openings 51 and 52 are formed in the upper and lower end surfaces of the nozzle body 5, and these openings 51 and 52 are formed approximately at the center axis of the nozzle body 5, and the guide roller 11 and the workpiece 3 are connected to each other. The wire electrodes 2 are arranged in such a positional relationship that the wire electrodes 2 are coaxially inserted therebetween.
Further, a guide holder 6 of an upper positioning guide 61 is coaxially inserted into the nozzle body 5, and a nozzle 7 is coaxially fitted into the opening 52 of the lower end surface so as to be movable in the axial direction. It is set up. The guide holder 6 is a cylindrical body having a hole 6a, and a die-shaped positioning guide 61 is attached to the lower end thereof, and the wire electrode 2 is positioned above the workpiece 3 by this guide 61. . This guide holder 6 is fixed to the nozzle body 5 so that its position can be minutely adjusted as necessary. Also nozzle 7
is arranged at the lower part of the nozzle body 5, is pivotally supported by the opening 52 at the lower end of the nozzle body 5, and is movable up and down according to the pressure and flow rate of the supplied machining fluid, the distance from the workpiece 3, etc. They are mated. The nozzle 7 is a hollow cylindrical body having a desired axial length, inner diameter, and axial inner diameter restriction, and the outer diameter of the end 71 of the flange located inside the nozzle body 5 is the same as that of the lower end of the nozzle body 5. is formed approximately equal to the inner diameter of the opening 52 of the
By fitting and abutting the end portion 71 on the inner wall of the opening 52, the nozzle 7 is prevented from falling off from the nozzle body 5. In addition, a hose 5 for supplying machining fluid under pressure is provided at an appropriate position on the upper side of the nozzle body 5.
3 is attached, and the machining fluid flows from here to the nozzle body 5.
It cools the positioning guide 61 inside, and is ejected from the lower nozzle 7 to the processing part of the workpiece 3, and is ejected upward from the upper opening 51 to cool the energizing pin 4 and the wire. A machining fluid is also supplied between the wire electrode 2 and the current-carrying pin 4 to cool the wire electrode 2 and the current-carrying pin 4. The workpiece 3 is fixed to a processing table 31, and the processing table 31 is moved by motors 32 and 33 to a predetermined contour shape on a plane perpendicular to the axis of the wire electrode 2 under the control of a numerical controller. It is now possible to move freely along the
尚、以上説明した各構成及び部材の多くのもの
は、被加工物3の上方側だけでなく下方にも設け
られており、被加工物3の下方には、被加工物3
を中心として上下が略対称となるように各部材が
配設されていることの他は、前述の説明と同様で
あるため説明を省略する。 Note that many of the configurations and members described above are provided not only above the workpiece 3 but also below the workpiece 3.
The explanation will be omitted since it is the same as the above explanation except that each member is arranged so as to be substantially symmetrical in the upper and lower directions with respect to the center.
従つて、被加工物3との間に形成される加工間
隙付近が高温度状態に晒されるのは勿論のこと、
上下一対の通電ピン4間のワイヤ電極2は通電加
熱されて高温になり易く、特に通電ピン4とワイ
ヤ電極2との間は摺接移動状態であつて、その状
態のもとに於ける通電であり、このために前述の
如く加工液の供給によつて冷却するようになつて
いる。
Therefore, it goes without saying that the vicinity of the machining gap formed between the workpiece 3 and the workpiece 3 is exposed to high temperatures.
The wire electrode 2 between the pair of upper and lower current-carrying pins 4 is easily heated by electricity and reaches a high temperature, and in particular, the current-carrying pin 4 and the wire electrode 2 are in a state of sliding contact and movement, and in this state, energization does not occur. Therefore, as mentioned above, cooling is performed by supplying machining fluid.
しかしながら、通電ピン4とワイヤ電極2との
間に第2図A,Bに示す如く楔状の微小隙間2
A,2Bが形成されるところでは、この微小隙間
2A,2Bに供給される加工液は、その表面張力
によつて滞留しやすい状態になつている。 However, there is a wedge-shaped minute gap 2 between the current-carrying pin 4 and the wire electrode 2 as shown in FIGS.
Where A and 2B are formed, the machining fluid supplied to these minute gaps 2A and 2B tends to stay there due to its surface tension.
しかして、加工電源15の正又は負の一方の電
圧を通電ピン4を通してワイヤ電極2に印加する
と、微小隙間2A,2Bの洗浄液には電気分解に
よる水素又は酸素の気泡が生じ、又ワイヤ電極2
と通電ピン4とが摺接しながら通電されるから、
その摺接間隙で通電加熱されて水蒸気等に気化し
たりして、微小隙間2A,2Bに気泡16となつ
て滞留することが多かつた。そして一旦滞留した
気泡16は微小隙間2A,2Bが楔状で狭いた
め、加工液の表面張力が有効に作用して開口部5
1からの噴射加工液によつても気泡16を逃がす
ことが困難であり、ワイヤ電極2と通電ピン4と
の間の接触又は電通抵抗を増して発熱量を増大せ
しめ、又その間に生ずる熱を冷却することが不可
能になり、当該部分の発熱或いは発生異常放電等
によつて気泡16の発生を増大すると共に、ワイ
ヤ電極2が当接通電ピン4部分で断線することに
なる。又気泡16はワイヤ電極2に吸着して被加
工物3に送られ、ワイヤ電極2と被加工物3との
加工間隙に於けるパルス放電に支障が生じて問題
であつた。 When either the positive or negative voltage of the machining power source 15 is applied to the wire electrode 2 through the energizing pin 4, hydrogen or oxygen bubbles are generated in the cleaning liquid in the minute gaps 2A and 2B due to electrolysis, and the wire electrode 2
Since the current is applied while the and the current-carrying pin 4 are in sliding contact,
In the sliding gap, it is heated by electricity, vaporizes into water vapor, etc., and often stays in the minute gaps 2A and 2B as air bubbles 16. Since the micro gaps 2A and 2B are wedge-shaped and narrow, the air bubbles 16 that have once accumulated are effectively affected by the surface tension of the machining fluid, and the opening 5
It is difficult to release the bubbles 16 even with the injection processing liquid from the wire electrode 2 and the current-carrying pin 4, which increases the contact or current resistance between the wire electrode 2 and the current-carrying pin 4, increasing the amount of heat generated, and the heat generated between the wire electrode 2 and the current-carrying pin 4. Cooling becomes impossible, and the generation of bubbles 16 increases due to heat generation or abnormal discharge in the relevant portion, and the wire electrode 2 becomes disconnected at the abutting current-carrying pin 4 portion. In addition, the bubbles 16 are attracted to the wire electrode 2 and sent to the workpiece 3, causing problems in pulse discharge in the machining gap between the wire electrode 2 and the workpiece 3.
この問題点を解決した本考案のワイヤカツト放
電加工装置は、ワイヤ電極2に加工液であつても
よい洗浄液の噴射ノズルを臨ませて設けたノズル
の中、通電ピン4とワイヤ電極2とで形成する楔
状の微小隙間2Bに洗浄液を1Kg/cm2以上の高圧
力で噴射させて、通電ピン4とワイヤ電極2との
間に発生して滞留する気泡16を洗浄除去する洗
浄ノズル10Aを設けて気泡を除去し、気泡の吸
着を除去したワイヤ電極2を被加工物3に供給す
るようにしたものである。
The wire-cut electrical discharge machining apparatus of the present invention solves this problem, and the wire-cutting electrical discharge machining apparatus is formed by a current-carrying pin 4 and a wire electrode 2 in a nozzle in which a spray nozzle for cleaning liquid, which may be a machining liquid, is provided facing the wire electrode 2. A cleaning nozzle 10A is provided for spraying cleaning liquid at a high pressure of 1 kg/cm 2 or more into the wedge-shaped minute gap 2B to clean and remove air bubbles 16 generated and retained between the energizing pin 4 and the wire electrode 2. The wire electrode 2 from which air bubbles have been removed and the adsorption of air bubbles removed is supplied to the workpiece 3.
以下、この考案の実施例を図面に基づいて詳細
に説明する。
Hereinafter, embodiments of this invention will be described in detail based on the drawings.
第2図乃至第4図はこの考案の第1実施例の概
略構成及び効果を示す説明図で2はワイヤ電極で
あり、このワイヤ電極2に加工電源15の電圧パ
ルスを印加する通電ピン又は通電ローラ4は、支
持部材13の下部に形成されたブラケツト13A
に固定して設けられた軸4Cに、固定支持又は回
動自在に設けられている。9は軸4Cに接続固定
されたワイヤカツト放電加工用の加工電源15の
一方の出力端子である。この実施例の通電ピン又
は通電ローラ4は中央部に半円形溝4aを有し、
この溝4aに、ガイド61とピン4Aとの設置位
置関係からワイヤ電極2が当接しながら下方に向
つて移動し、下方の図示省略のリールに巻取る等
して回収される。又、10A,10A及び10B
は図示省略の洗浄ユニツトに接続された配管の先
端に設けられた加工液を洗浄液として噴射する洗
浄ノズルで、この洗浄ノズルは下方より上向きに
一対のノズル10A,10Aが左右後方から傾斜
してワイヤ電極2と通電ピン又は通電ローラ4と
で形成される楔状の微小隙間2Bに臨まされてい
る。 2 to 4 are explanatory diagrams showing the schematic configuration and effect of the first embodiment of the present invention. 2 is a wire electrode, and a conductive pin or conductive roller 4 for applying a voltage pulse from a machining power source 15 to the wire electrode 2 is attached to a bracket 13A formed at the bottom of a support member 13.
The conductive pin or roller 4 in this embodiment has a semicircular groove 4a in the center, and is fixedly supported or rotatably mounted on a shaft 4C fixed to the shaft 4C. Reference numeral 9 denotes one output terminal of a machining power source 15 for wire-cut electric discharge machining which is connected and fixed to the shaft 4C.
Due to the positional relationship between the guide 61 and the pin 4A, the wire electrode 2 moves downward while being in contact with the groove 4a, and is then collected by being wound up on a reel (not shown) below.
is a cleaning nozzle which is provided at the end of a pipe connected to a cleaning unit (not shown) and sprays the machining fluid as cleaning fluid. This cleaning nozzle has a pair of nozzles 10A, 10A which face upward from below and are inclined from the left and right rear to face a wedge-shaped tiny gap 2B formed between the wire electrode 2 and the conductive pin or conductive roller 4.
このような楔状の微小隙間2Bには供給された
洗浄液の表面張力によつて、洗浄液が滞留するこ
とが知られている。このような状態にある通電ピ
ン4に加工電源15の正、又は負の一方の電圧を
印加すると、滞留している洗浄液には電気分解に
よる水素又は酸素等の気泡16が生じる。又この
気泡16はワイヤ電極2と通電ピン4とが相対的
に接触しながら摺動する状態のもとに通電される
から、その摺接間隙で通電加熱される洗浄液が水
蒸気等に気化することによつても生じる。このよ
うに数々の原因で生じ、一旦滞留した気泡16は
隙間2Bが楔状で狭いために加工液の表面張力が
有効に作用していて逃がすことが困難であり、た
またま離れた気泡16はワイヤ電極2に吸着した
まま、被加工物3に送られ、加工間隙に於けるパ
ルス放電に支障を来たしている。従つて、図示し
ていない洗浄ユニツト内の圧送ポンプにより1
Kg/cm2以上で、1〜3Kg/cm2程度の高圧力に加圧
した加工液を洗浄液としてノズル10Aから、微
小〓間2Bに向つて噴射し、気泡16を除去する
ようにしたものである。 It is known that the cleaning liquid stays in such a wedge-shaped minute gap 2B due to the surface tension of the supplied cleaning liquid. When one of the positive and negative voltages of the machining power source 15 is applied to the current-carrying pin 4 in this state, bubbles 16 of hydrogen, oxygen, etc. are generated in the retained cleaning liquid due to electrolysis. In addition, since the bubble 16 is energized while the wire electrode 2 and the current-carrying pin 4 are sliding while being in relative contact with each other, the cleaning liquid that is heated by electricity in the sliding gap is not likely to vaporize into water vapor or the like. It also occurs due to In this way, the air bubbles 16 that are generated due to various reasons and once accumulated are difficult to escape because the gap 2B is wedge-shaped and narrow, and the surface tension of the machining fluid is effectively acting on them. The particles remain adsorbed to the workpiece 2 and are sent to the workpiece 3, causing problems with pulsed discharge in the machining gap. Therefore, the pressure pump in the cleaning unit (not shown)
Kg/cm 2 or more, the processing fluid pressurized to a high pressure of about 1 to 3 Kg/cm 2 is sprayed as a cleaning fluid from the nozzle 10A toward the minute gap 2B to remove air bubbles 16. be.
又、もう一つのノズル10Bは下方より上向き
に前方からワイヤ電極2を通電ピン又はローラ4
の表面に押付けるように洗浄液を噴射するように
配置されている。これ等の洗浄液ノズル10A,
10Bは、ワイヤ電極2を中心にして略対称に対
をなしており、このノズル10A,10Bによ
り、洗浄液の噴流がワイヤ電極2の略全面に亘つ
て行きわたり充分に濡らすと共にその他の付着物
等をも除去する。 Further, the other nozzle 10B connects the wire electrode 2 to the energizing pin or roller 4 from the front upward from below.
is arranged so as to spray the cleaning liquid so as to press it against the surface of the These cleaning liquid nozzles 10A,
Nozzles 10B form a pair approximately symmetrically around the wire electrode 2, and these nozzles 10A and 10B allow a jet of cleaning liquid to spread over almost the entire surface of the wire electrode 2, sufficiently wetting it and removing other deposits, etc. Also removes.
第5図は第3図及び第4図の装置に於て、0.2
mmφのワイヤ電極2を使用した場合の、断線電流
値(A)と洗浄液噴出圧(Kg/cm2)との関係を示す特
性曲線図である。このグラフに於て洗浄液の洗浄
噴出圧が1Kg/cm2を越える値から、隙間2Bから
の気泡除去及び濡れ作用が充分となり、且つワイ
ヤ電極2に対する冷却効果も顕著となるようであ
るが、2Kg/cm2を越えると冷却作用には限度があ
るようで、3Kg/cm2程度以上では、仮に気泡除
去、濡れ作用及び異物除去等の作用が充分でも、
冷却作用は噴出圧力に比例しないようで、第3〜
4図の実施例は、圧力1乃至3Kg/cm2程度が良い
所のようである。 Figure 5 shows that the equipment shown in Figures 3 and 4 has a 0.2
It is a characteristic curve diagram showing the relationship between the disconnection current value (A) and the cleaning liquid ejection pressure (Kg/cm 2 ) when a wire electrode 2 of mmφ is used. In this graph, it appears that when the cleaning jet pressure of the cleaning liquid exceeds 1 kg/cm 2 , bubble removal and wetting action from the gap 2B becomes sufficient, and the cooling effect on the wire electrode 2 becomes remarkable. There seems to be a limit to the cooling effect when it exceeds 3 kg/cm 2 , and even if the air bubble removal, wetting effect, and foreign matter removal are sufficient, at 3 kg/cm 2 or more,
It seems that the cooling effect is not proportional to the ejection pressure, and the
In the embodiment shown in FIG. 4, a pressure of about 1 to 3 kg/cm 2 seems to be suitable.
第6図及び第7図は、通電ピン又は通電ローラ
4及び押圧ローラ4Aとは別個に被加工物3に供
給する未加工のワイヤ電極2に複数個の洗浄ロー
ラ8を設け、この洗浄ローラ8でガイドされるワ
イヤ電極2より吸着した気泡や異物を除去して清
浄に洗浄できるようにしたものである。 6 and 7, a plurality of cleaning rollers 8 are provided on the unprocessed wire electrode 2 that is supplied to the workpiece 3 separately from the current-carrying pin or the current-carrying roller 4 and the pressing roller 4A. Air bubbles and foreign matter adsorbed by the wire electrode 2 guided by the wire electrode 2 can be removed to clean the wire electrode 2.
即ち、一対のつづみ型洗浄ローラ8が第7図に
示すようにワイヤ電極2を両側から挾んで図示省
略のブラケツトに回転自在に装着されている。こ
のような一対の洗浄ローラ8がワイヤ電極2の経
路方向に三段に形成され、各段は軸82の方向を
直角に交叉させる等相互に異にしている。上段の
洗浄ローラ8及び中段の洗浄ローラ8に於いて
は、夫々一対の洗浄液ノズル10Cが上側よりワ
イヤ電極2よりに傾斜し、洗浄ローラ8とワイヤ
電極2との当接する楔状の隙間2A,2Bに指向
している。ノズル10Cは、更に必要な方向から
噴射するように必要な個数増設されるものであ
り、この上中下の三段の洗浄ノズル10Cによつ
て洗浄液をあらゆる方向からワイヤ電極2に高圧
力で噴射させ、洗浄性を一層向上させることがで
きる。又各洗浄ローラ8の回転を係止して、ワイ
ヤ電極2に摺接するようにすれば、バリ等の異物
除去や、濡れ性改善に更に効果がある。 That is, as shown in FIG. 7, a pair of pinch-type cleaning rollers 8 are rotatably mounted on brackets (not shown), sandwiching the wire electrode 2 from both sides. A pair of such cleaning rollers 8 are formed in three stages in the direction of the path of the wire electrode 2, and the directions of the shafts 82 of each stage are different from each other, such as crossing at right angles. In the upper cleaning roller 8 and the middle cleaning roller 8, a pair of cleaning liquid nozzles 10C are inclined from the upper side toward the wire electrode 2, and wedge-shaped gaps 2A, 2B are formed between the cleaning roller 8 and the wire electrode 2 in contact with each other. oriented towards. The number of nozzles 10C is increased as necessary to spray from the required direction, and the cleaning liquid is sprayed at high pressure from all directions to the wire electrode 2 by the three stages of cleaning nozzles 10C (top, middle, and bottom). It is possible to further improve the cleaning performance. Furthermore, if the rotation of each cleaning roller 8 is stopped so that it comes into sliding contact with the wire electrode 2, it is more effective to remove foreign substances such as burrs and improve wettability.
尚、通電ピン4の支持部材13等に対する取付
け保持構成及びピン4の内部構成等としては任意
適宜のものを用い得るが、例えば実公昭56−
14014号公報記載のもの等を参照することができ
る。 Note that any appropriate structure for attaching and holding the energizing pin 4 to the support member 13 and the internal structure of the pin 4 may be used;
You can refer to the one described in Publication No. 14014.
この考案によれば、移動するワイヤ電極が被加
工物の加工部分に入る前に加工液等の洗浄液で洗
浄してワイヤ電極に吸着した気体を除去すること
ができたものであり、特に通電ピンとワイヤ電極
との間に形成される楔状の微小隙間に供給されて
滞留している加工液等の洗浄液の中に発生する気
泡を容易に除去することができたことから、加工
電流を安定して供給することができ、断線電流値
を増大させ得るので加工能力を向上させる効果を
有するものである。
According to this invention, before the moving wire electrode enters the processing part of the workpiece, it can be cleaned with a cleaning liquid such as processing fluid to remove the gas adsorbed on the wire electrode. It was possible to easily remove air bubbles generated in the cleaning fluid, such as machining fluid, which is supplied and stagnated in the wedge-shaped micro gap formed between the wire electrode and the wire electrode, making it possible to stabilize the machining current. This has the effect of improving processing ability because it can increase the disconnection current value.
第1図は従来のワイヤカツト放電加工装置の主
要部を示す側断面図、第2図A,Bは上部通電装
置部分の拡大図、第3図及び第4図は本考案の実
施例説明図で、通電ピン又はローラ及び押圧ピン
と洗浄ノズル部分の側面図と正面図、第5図は前
記実施例に於ける断線電流値と洗浄液噴出圧との
関係を示す特性曲線図、第6図はこの考案に付設
した洗浄ピン又はローラ及び洗浄液ノズルを示す
正面図で、第7図は第6図の中央に位置する洗浄
ピン又はローラを示す平面図である。
2……ワイヤ電極、10A,10B,10C…
…洗浄ノズル、4……通電ピン。
Fig. 1 is a side sectional view showing the main parts of a conventional wire-cut electrical discharge machining device, Figs. 2 A and B are enlarged views of the upper energizing device, and Figs. 3 and 4 are explanatory views of an embodiment of the present invention. , a side view and a front view of the energizing pin or roller, the pressing pin, and the cleaning nozzle portion, FIG. 5 is a characteristic curve diagram showing the relationship between the disconnection current value and the cleaning liquid ejection pressure in the above embodiment, and FIG. 7 is a front view showing the cleaning pin or roller and the cleaning liquid nozzle attached to the cleaning pin or roller, and FIG. 7 is a plan view showing the cleaning pin or roller located in the center of FIG. 6. 2...Wire electrode, 10A, 10B, 10C...
...Washing nozzle, 4...Electricity pin.
Claims (1)
置にワイヤ電極を当接させた状態で軸方向に更
更新移動させ、ワイヤ電極と被加工物との間に
間歇的な電圧パルスを印加して被電加工を行な
うワイヤカツト放電加工装置に於て、ワイヤ電
極2に加工液であつてもよい先浄液の噴射ノズ
ルを臨ませて設けたノズルの中、通電ピン4と
ワイヤ電極2とで形成する楔状の微小隙間2B
に洗浄液を所定高圧力で噴射させて、通電ピン
4とワイヤ電極2との間に発生して滞留する気
泡を洗浄除去する洗浄ノズル10Aを前記楔状
の微小隙間2B側に設けて気泡を除去し、気泡
の吸着を除去したワイヤ電極2を被加工物3に
供給するワイヤカツト放電加工装置。 (2) 所定高圧力が1Kg/cm2以上である実用新案登
録請求の範囲第1項に記載のワイヤカツト放電
加工装置。[Claims for Utility Model Registration] (1) The wire electrode is brought into contact with an energizing device disposed on one or both sides of the workpiece, and the wire electrode is updated and moved in the axial direction, and the wire electrode and the workpiece are connected. In a wire-cut electrical discharge machining device that performs electrical machining by applying intermittent voltage pulses during the process, a nozzle is installed so that a spray nozzle for pre-cleaning liquid, which may be machining liquid, faces the wire electrode 2. Inside, a wedge-shaped minute gap 2B formed between the current-carrying pin 4 and the wire electrode 2
A cleaning nozzle 10A is installed on the wedge-shaped minute gap 2B side to remove air bubbles generated and accumulated between the current-carrying pin 4 and the wire electrode 2 by spraying a cleaning liquid at a predetermined high pressure. , a wire-cut electrical discharge machining device that supplies a wire electrode 2 from which bubble adsorption has been removed to a workpiece 3. (2) The wire cut electrical discharge machining apparatus according to claim 1, wherein the predetermined high pressure is 1 Kg/cm 2 or more.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1142283U JPS59116129U (en) | 1983-01-28 | 1983-01-28 | Wire cut electrical discharge machining equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1142283U JPS59116129U (en) | 1983-01-28 | 1983-01-28 | Wire cut electrical discharge machining equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59116129U JPS59116129U (en) | 1984-08-06 |
JPS6346196Y2 true JPS6346196Y2 (en) | 1988-12-01 |
Family
ID=30142850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1142283U Granted JPS59116129U (en) | 1983-01-28 | 1983-01-28 | Wire cut electrical discharge machining equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59116129U (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2594078B2 (en) * | 1987-12-10 | 1997-03-26 | 株式会社ソディック | Current supply device for wire cut electric discharge machine |
JP4603605B2 (en) * | 2008-08-28 | 2010-12-22 | ファナック株式会社 | Wire electrical discharge machine with electrode pin detachment / push detection function |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5621535A (en) * | 1979-07-02 | 1981-02-28 | Abu Ab | Reverse rotation preventing mechanism in fishing reel |
JPS56146629A (en) * | 1980-04-15 | 1981-11-14 | Mitsubishi Electric Corp | Working liquid sprayer of wire-cut discharge processing device |
-
1983
- 1983-01-28 JP JP1142283U patent/JPS59116129U/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5621535A (en) * | 1979-07-02 | 1981-02-28 | Abu Ab | Reverse rotation preventing mechanism in fishing reel |
JPS56146629A (en) * | 1980-04-15 | 1981-11-14 | Mitsubishi Electric Corp | Working liquid sprayer of wire-cut discharge processing device |
Also Published As
Publication number | Publication date |
---|---|
JPS59116129U (en) | 1984-08-06 |
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