JPH0248119A - Automatic connection method for wire cut electric spark machine - Google Patents

Automatic connection method for wire cut electric spark machine

Info

Publication number
JPH0248119A
JPH0248119A JP19620488A JP19620488A JPH0248119A JP H0248119 A JPH0248119 A JP H0248119A JP 19620488 A JP19620488 A JP 19620488A JP 19620488 A JP19620488 A JP 19620488A JP H0248119 A JPH0248119 A JP H0248119A
Authority
JP
Japan
Prior art keywords
wire
nozzle
machining fluid
machining
cut
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
JP19620488A
Other languages
Japanese (ja)
Other versions
JP2644540B2 (en
Inventor
Kazushi Tanemura
種村 一志
Shigeji Yokomichi
茂治 横道
Masahito Umetsu
梅津 雅仁
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.)
WASHINO ENG KK
Amada Co Ltd
Original Assignee
WASHINO ENG KK
Amada Co Ltd
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 WASHINO ENG KK, Amada Co Ltd filed Critical WASHINO ENG KK
Priority to JP63196204A priority Critical patent/JP2644540B2/en
Publication of JPH0248119A publication Critical patent/JPH0248119A/en
Application granted granted Critical
Publication of JP2644540B2 publication Critical patent/JP2644540B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Abstract

PURPOSE:To improve the connection rate of an automatic connection by removing machining fluid within a nozzle for guiding a wire electrode when the automatic connection is performed, and performing the automatic connection of the wire electrode while the inside of the nozzle is in a dry condition. CONSTITUTION:When a wire 25 which is an electrode is cut, a clamper 43 is shifted toward the center of the wire 25 so as to clamp the wire 25 which is projected downward from a machining fluid supply nozzle 17. Then the wire 25 is cut by making an electric current flow between a conducting rotor 35 and the clamper 43. In this case, air is sent from a machining fluid supply passage 39a in the direction of an arrow X, so that the machining fluid collected in machining fluid supply passages 39a-39c is jetted out from the discharge port 41 of the nozzle 17 for its removal. Then the cutting of the wire 25 is performed while the wire is kept in a dry condition. Consequently, as an electric current value is constantly kept as predetermined and the cut end shape of the wire 25 becomes preferable without any difference in cutting, the connection rate of the automatic connection device concerned can be improved.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) この発明は自動結線付ワイヤカット放電加工機において
、ワイヤ電極を自動結線する自動結線方法に関でる。
[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an automatic wiring method for automatically connecting wire electrodes in a wire-cut electrical discharge machine with automatic wiring.

(従来の技術) 従来、ワイヤカット放電加工機おける被加工物の切断加
工時に43いて、一つの形状の加工が終了づる旬にワイ
ヤ電極を切断し、このワイヤ電極を他の加工部位の加工
開始孔及び上側のダイスへ挿通Jる作業が必要となる。
(Prior art) Conventionally, when cutting a workpiece in a wire-cut electric discharge machine, a wire electrode is cut when machining of one shape is finished, and this wire electrode is used to start machining another part. It is necessary to insert it into the hole and the upper die.

このため、ワイヤ電極に大きな電流を流して熱ににっ−
C切断する方法と、刃先を持ったカッタによって機械的
に切断づ−るという2つの方法が広く用いられていた。
For this reason, a large current is passed through the wire electrode to avoid heat.
Two methods were widely used: C-cutting and mechanical cutting using a cutter with a cutting edge.

(発明が解決しようとする課題) ところで、上述した従来のワイヤ電極の結線方法は、ワ
イヤ電極を切断した時に、その切断端部の形状が圧壊ま
たは溶融のために、ワイヤ電極の直径よりも大きくなる
傾向にある。
(Problems to be Solved by the Invention) By the way, in the conventional wire electrode connection method described above, when the wire electrode is cut, the shape of the cut end is crushed or melted, so that the shape of the cut end is larger than the diameter of the wire electrode. There is a tendency to

従って、このようにして切断されたワイヤ電極の切断端
部を、自動結線装置を用いてガイドに貫通させる場合、
切断端部をガイドに挿入させ難く、人手を要していた。
Therefore, when the cut end of the wire electrode cut in this way is passed through the guide using an automatic wire connection device,
It was difficult to insert the cut end into the guide, and manual labor was required.

特に、ワイヤ電極に電流を流しで熱によって切断する場
合は、ワイヤ電極を切断動作の間、ドライな状態に保つ
ことが良好な切断端部形状を得る大きな要素どなってい
る。しかし、従来のワイヤカット放電加工機にあっては
、加工中にノズルより噴出されている加工液が加工終了
しワイヤ電極を切断づる時、ノズル内及び加工液供給路
内に残っている。
Particularly, when cutting by heat by passing a current through the wire electrode, keeping the wire electrode dry during the cutting operation is a major factor in obtaining a good cut end shape. However, in conventional wire-cut electric discharge machines, the machining fluid ejected from the nozzle during machining remains in the nozzle and the machining fluid supply path when the wire electrode is cut after machining.

このため、ワイヤ電極に通電中、即ち、切断動作中に加
工液はノズルよりワイヤ電極を伝わり落ちて、同じ電流
を流してもワイヤ電極の切れ方に差が生じ、切断端部形
状が一定せず自動結線作業に不都合が生じ結線率を低ト
させていた。また、時には結線不可能に陥るという問題
があった。
For this reason, while the wire electrode is energized, that is, during the cutting operation, the machining liquid flows down the wire electrode from the nozzle, and even if the same current is applied, the wire electrode is cut differently, and the shape of the cut end is not constant. However, the automatic wiring work was inconvenient and the wiring rate was low. In addition, there was a problem in that sometimes it became impossible to connect the wires.

この発明の目的は、上記問題点を改善するため、ワイヤ
電極切断時にワイヤ電極をドライな状態に保ち、良好な
切断端部形状を得ることにより自動結線装置の結線率の
向上を図ったワイヤカット放電加工機における自動結線
方法を提供することにある。
The purpose of the present invention is to improve the above-mentioned problems by keeping the wire electrode dry when cutting the wire electrode and obtaining a good cut end shape, thereby improving the wire connection rate of an automatic wire connection device. An object of the present invention is to provide an automatic wire connection method for an electrical discharge machine.

[発明の構成] (課題を解決づ”るための手段〉 上記目的を達成づるために、この発明は、ワイヤ電極を
被加工物との間の放電加工間隙に加工用放電パルスを印
加して被加工物を加工する自動結線付ワイVカット放電
加工機において、自動結線時にワイヤ電極を案内するノ
ズル内の加工液を除去し、ノズル内をドライな状態にし
てワイヤ電極を自動結線するワイヤカット放電加工機に
おける自動結線方法である。
[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention applies a machining discharge pulse to a discharge machining gap between a wire electrode and a workpiece. Wire cut removes the machining fluid in the nozzle that guides the wire electrode during automatic wire connection in a Y-V cut electric discharge machine with automatic wire connection that processes the workpiece, and leaves the inside of the nozzle in a dry state to automatically connect the wire electrode. This is an automatic wire connection method for electrical discharge machines.

ノズル内の加工液を除去しノズル内をドライな状態とす
るための具体的な手段として、ノズル内の加工液をエア
により飛散させたり、あるいは吸引したり、又はエアに
より飛散させた後、吸引する方法が効果的である。
As a specific method for removing the machining liquid inside the nozzle and keeping the inside of the nozzle in a dry state, the machining liquid inside the nozzle can be scattered with air or suctioned, or after being scattered with air, suction can be used. This method is effective.

(作用) この発明のワイヤカット放電加工機にお()る自動結線
方法を採用することにより、ノズル内の加工液を例えば
エアーにより飛散させるか、強弓するか、あるいはエア
ーにより飛散させた後強弓してノズル内をドライな状態
とする。このため、ワイヤ電極切断時にワイNノ電極に
流れる電流は常に一定に保たれるので、良好な切断端部
形状のワイヤが得られる。
(Function) By adopting the automatic wire connection method in () of the wire-cut electric discharge machine of the present invention, the machining fluid in the nozzle can be scattered by air, or can be spattered by air, or can be spattered by air and then can be sputtered. to keep the inside of the nozzle dry. Therefore, the current flowing through the wire electrode when cutting the wire electrode is always kept constant, so that a wire with a good cut end shape can be obtained.

(実施例) 以下、この発明の実施例を図面に基づいて詳細に説明す
る。
(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

第2図を参照するに、ワイヤカット放電加工機1は基台
3の上面−側にコラム5を立設してなり、基台3の上面
には被加工物Wを固定して前後左右方向へ移動自在にワ
ークテーブル7が取付【プである。
Referring to FIG. 2, the wire-cut electrical discharge machine 1 has a column 5 erected on the upper side of the base 3, and a workpiece W is fixed on the upper surface of the base 3 in the front, back, left, and right directions. The work table 7 is attached so that it can be moved freely.

前記コラム5よりワークテーブル7の方向へ延伸した上
部アーム9と下部アーム11とが、上下に離隔しで設け
てあり、この上部アーム9の先端部には上下スライド1
3が上下位置調整自在に装着しである。その上下スライ
ド13の下端部には上部ノズルホルダ15が数句けてあ
り、その上部ノズルホルダ15に上部加工液供給ノズル
17が装着しである。
An upper arm 9 and a lower arm 11 extending from the column 5 toward the work table 7 are provided vertically apart from each other, and a vertical slide 1 is provided at the tip of the upper arm 9.
3 is attached so that the vertical position can be adjusted freely. Several upper nozzle holders 15 are provided at the lower end of the vertical slide 13, and an upper machining fluid supply nozzle 17 is attached to the upper nozzle holder 15.

前記下部アーム11の先端部には上部加工液供給ノズル
17と対向して下部加工液供給ノズル19が、下部ノズ
ルボルダ21を介して装着しである。上部加工液供給ノ
ズル17と下部加工液供給ノズル19は、前記ワークテ
ーブル7上に設けた支持部材23に取イ」いた被加工物
Wの放電加工部へ、蒸留水のごとき加工液を噴射供給す
ると共に、電極としてのワイヤ25を案内保持する作用
をなすものである。
A lower machining fluid supply nozzle 19 is attached to the tip of the lower arm 11 via a lower nozzle boulder 21, facing the upper machining fluid supply nozzle 17. The upper machining fluid supply nozzle 17 and the lower machining fluid supply nozzle 19 spray and supply machining fluid such as distilled water to the electrical discharge machining section of the workpiece W which is mounted on the support member 23 provided on the work table 7. At the same time, it serves to guide and hold the wire 25 as an electrode.

なお、図示を省略したが、ワイヤ25を供給すると共に
巻取る装置が設りられて放電加工機は構成されている。
Although not shown in the drawings, the electrical discharge machine is equipped with a device for supplying and winding the wire 25.

次に、この実施例の主要部である上部加工液供給ノズル
17について更に詳細に説明する。
Next, the upper machining liquid supply nozzle 17, which is the main part of this embodiment, will be explained in more detail.

第1図を参照(るに、上部加工液供給ノズル17は上下
スライド13〈一部図示省略の先端部に設けた上部ノズ
ルボルダ15に装着されている。
Referring to FIG. 1, the upper machining liquid supply nozzle 17 is attached to an upper nozzle boulder 15 provided at the tip of the vertical slide 13 (partially not shown).

その上部ノズルホルダ15は、ノズルベース27にねじ
などにより固着されたダイスガイドブロック29にダイ
スガイド31を螺着して構成されている。
The upper nozzle holder 15 is constructed by screwing a die guide 31 onto a die guide block 29 that is fixed to a nozzle base 27 with screws or the like.

上部加工液供給ノズル17は、ノズル固定プツト33を
介して前記ダイガイドブロック29に装着されている。
The upper machining liquid supply nozzle 17 is attached to the die guide block 29 via a nozzle fixing put 33.

前記ノズルベース27の中心部には、通電コマ35を内
蔵した通電コマホルダ37が装着しである。
At the center of the nozzle base 27, an energizing piece holder 37 having a built-in energizing piece 35 is mounted.

放電加工作業中に加工液は、図外の加工液供給装置によ
って供給され、ノズルベース27に設置)だ加工液供給
路39aよりダイガイドブロック29に設(プた加工液
供給路39bを通る。更に加工液は上部加工液供給ノズ
ル17に設りた加工液供給路39Cを経て噴出ロア11
より加工間隙に噴射される。
During the electrical discharge machining operation, machining fluid is supplied by a machining fluid supply device (not shown), and passes through a machining fluid supply path 39b installed in the die guide block 29 from a machining fluid supply path 39a installed in the nozzle base 27. Further, the machining fluid flows through the machining fluid supply path 39C provided in the upper machining fluid supply nozzle 17 to the spout lower 11.
It is sprayed into the machining gap.

上記の構成によりその作用としては、電極であるワイヤ
25を切断する場合は、移動自在なりランパ43(図中
鎖線で示す)がワイヤ25の中心側へ移動し、上部加工
液供給ノズル17より下方へ出ているワイヤ25をクラ
ンクプする。その後、通電コマ35とクランパ43との
間に図示を省略したが電源装置ににって電流を流し、ワ
イ1725の切断作業を行なう。
With the above structure, when cutting the wire 25 which is an electrode, the movable ramper 43 (indicated by a chain line in the figure) moves toward the center of the wire 25 and lowers from the upper machining fluid supply nozzle 17. Crank the wire 25 coming out. Thereafter, a current (not shown) is applied between the current-carrying piece 35 and the clamper 43 using a power supply device to cut the wire 1725.

この際、放電加工中に使用した加工液は、加工液供給路
39a 、39b 、39c内に溜ツT 73す、この
加工液をす1出するため、図外の空気圧発生源よりエア
ー配管を加工液供給路39aに連通さゼる。そして第1
図にX矢印で示す方向へエアーを送る。エアーを送るこ
とにより、加工液供給路39a 、39b 、39c内
に溜った加工液は上部加工液供給ノズル17の噴出口を
1J:り噴出飛散し、除去される。その結果、ワイI″
725の切断加工中、加]二液は上部加工液供給ノズル
17の噴出口41より落ちず、ドライな状態で切断加工
を行なうことができる。
At this time, the machining fluid used during electrical discharge machining accumulates in the machining fluid supply channels 39a, 39b, and 39c. It communicates with the machining fluid supply path 39a. and the first
Send air in the direction indicated by the X arrow in the figure. By sending air, the machining fluid accumulated in the machining fluid supply paths 39a, 39b, and 39c is ejected and scattered through the spout opening of the upper machining fluid supply nozzle 17, and is removed. As a result, I''
During the cutting process of 725, the two liquids do not fall from the spout 41 of the upper processing liquid supply nozzle 17, and the cutting process can be performed in a dry state.

このため、電極であるワイヤ25をドライな状態に保つ
ことができ、常に電流値は同一に保たれ切れ方に差が生
ずることなく、ワイヤ25の切断端部形状は良好となり
、自動結線装置の結線率の向上を図ることができる。
Therefore, the wire 25, which is an electrode, can be kept in a dry state, the current value is always kept the same, there is no difference in the way the wire is cut, and the shape of the cut end of the wire 25 is good, making it easy for automatic wire connection equipment to use. It is possible to improve the wire connection rate.

また、別の方法として、図示を省略したが加工液供給回
路と吸引回路とを切換えてブロア等により加工液供給路
39a 、39b 、39c内の加工液を吸引する。つ
まり、第1図中Y矢印方向へ吸引すると、加工液が除去
される。したがって、切断加工動作中に加工液がノズル
17の噴出口41より落下しないようになる。
As another method, although not shown, the machining fluid supply circuit and the suction circuit are switched to suck the machining fluid in the machining fluid supply paths 39a, 39b, and 39c using a blower or the like. That is, when suction is performed in the direction of the Y arrow in FIG. 1, the machining fluid is removed. Therefore, the machining fluid is prevented from falling from the spout 41 of the nozzle 17 during the cutting operation.

更に別の方法として、前述した2つの方法を01せて行
なうようにする。即ら、加工液供給停止時に加工液供給
路39a 、39b 、39c内に残っている加工液を
エアーでノズル17の噴出口41より飛散させ、その後
切断加工作業が終了するまでブロア等により加重り液供
給路39a 、39b 。
Yet another method is to perform the two methods described above in parallel. That is, when the machining fluid supply is stopped, the machining fluid remaining in the machining fluid supply paths 39a, 39b, and 39c is scattered by air from the spout 41 of the nozzle 17, and then the machining fluid is applied with a blower or the like until the cutting operation is completed. Liquid supply paths 39a, 39b.

39C内の加工液を吸引して除去する。その結果は、前
述した2つの方法より更に良い効果を得ることができる
Suction and remove the machining fluid in 39C. The result can be even better than the two methods mentioned above.

なお、この発明の実施例としてノズル内をドライな状態
とするためにエアーを作用したが、このエアーは熱風と
しても良く、また、エアーに代えてヒータ等をノズルに
内蔵しても良く、上述した実施例に限定されることなく
、この弁明の要旨を逸脱しない範囲に33いて種々変更
を加え得ることは勿論である。
In the embodiment of this invention, air is used to keep the inside of the nozzle dry, but this air may be hot air, or a heater or the like may be built into the nozzle instead of air. It goes without saying that the invention is not limited to the embodiments described above, and that various changes can be made without departing from the gist of this defense.

[発明の効果] 以上のごどき実施例の説明より理解されるように、この
発明によれば、ワイヤを熱切断時にノズル内を例えばエ
アーにより噴射また吸引、あるいは両者を併せて使用す
ることにより、ノズル内を常にドライな状態にする。
[Effects of the Invention] As can be understood from the above description of the embodiments, according to the present invention, when a wire is thermally cut, the inside of the nozzle is injected or sucked by air, or by using both together. , keep the inside of the nozzle always dry.

このため、放電加工中に使用された加工液はノズル内か
ら除去され、切断作業中にノズルから加■液が落下する
ことなく、安定した切断作業が行なえ、良好な切断端部
形状が得られ、自動結線装置の結線率の向上を図ること
ができる。
Therefore, the machining fluid used during electrical discharge machining is removed from inside the nozzle, and the fluid does not fall from the nozzle during cutting, allowing stable cutting and obtaining a good cut edge shape. , it is possible to improve the wire connection efficiency of the automatic wire connection device.

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

第1図はこの発明の主要部であるノズルの断面図、第2
図はこの実施例を実施した一実施例のワイヤカット放電
加工機における側面図である。 1・・・ワイヤカット放電加工機、17・・・上部加工
液供給ノズル、25・・・ワイヤ 代理人   弁理士   三 好  保 男「トの ycJ
Figure 1 is a cross-sectional view of the nozzle, which is the main part of this invention;
The figure is a side view of a wire-cut electrical discharge machine according to an embodiment of this embodiment. 1...Wire-cut electrical discharge machine, 17...Upper machining fluid supply nozzle, 25...Wire agent Patent attorney Yasuo Miyoshi "TonoycJ"

Claims (4)

【特許請求の範囲】[Claims] (1)ワイヤ電極と被加工物との間の放電加工間隙に加
工用放電パルスを印加して被加工物を加工する自動結線
付ワイヤカット放電加工機において、自動結線時にワイ
ヤ電極を案内するノズル内の加工液を除去し、ノズル内
をドライな状態にしてワイヤ電極を自動結線することを
特徴とするワイヤカット放電加工機における自動結線方
法。
(1) A nozzle that guides the wire electrode during automatic wire connection in a wire-cut electric discharge machine with automatic wire connection that processes the workpiece by applying a machining discharge pulse to the discharge machining gap between the wire electrode and the workpiece. An automatic wire connection method for a wire-cut electric discharge machine, characterized in that a machining fluid inside the nozzle is removed and a wire electrode is automatically wired while the inside of the nozzle is in a dry state.
(2)自動結線時にノズル内の加工液をエアーにより飛
散させて除去し、ノズル内をドライな状態にしてワイヤ
電極を自動結線す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機における自動結線方法。
(2) The wire-cut electrical discharge machine according to claim 1, characterized in that during automatic wire connection, the machining fluid in the nozzle is scattered and removed by air, and the wire electrode is automatically wired with the inside of the nozzle in a dry state. Automatic wiring method.
(3)自動結線時にノズル内の加工液を吸引して除去し
、ドライな状態にしてワイヤ電極を自動結線することを
特徴とする請求項1記載のワイヤカット放電加工機にお
ける自動結線方法。
(3) The automatic wire connection method for a wire-cut electrical discharge machine according to claim 1, characterized in that during automatic wire connection, the machining fluid in the nozzle is removed by suction, and the wire electrode is automatically wired in a dry state.
(4)自動結線時にノズル内の加工液をエアーにより飛
散させた後吸引して除去し、ノズル内をドライな状態に
してワイヤ電極を自動結線す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機における自動結線方法
(4) The wire cutter according to claim 1, characterized in that during automatic wire connection, the machining liquid in the nozzle is scattered by air and then removed by suction, and the wire electrode is automatically wired with the inside of the nozzle in a dry state. Automatic wiring method for electrical discharge machines.
JP63196204A 1988-08-08 1988-08-08 Automatic wiring method in wire cut electric discharge machine Expired - Lifetime JP2644540B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63196204A JP2644540B2 (en) 1988-08-08 1988-08-08 Automatic wiring method in wire cut electric discharge machine

Applications Claiming Priority (1)

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JP63196204A JP2644540B2 (en) 1988-08-08 1988-08-08 Automatic wiring method in wire cut electric discharge machine

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JPH0248119A true JPH0248119A (en) 1990-02-16
JP2644540B2 JP2644540B2 (en) 1997-08-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6294748B1 (en) * 1998-05-28 2001-09-25 Mitsubishi Denki Kabushiki Kaisha Wire electrical discharge machine
DE112014006240B4 (en) 2014-02-20 2019-07-11 Mitsubishi Electric Corp. Wire EDM machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101435726B1 (en) * 2012-12-17 2014-09-01 (주)서울정기 Iron power suction device of working fluid for wirecut electric discharge machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01205930A (en) * 1988-02-10 1989-08-18 Fanuc Ltd Wire cutting and wire-cut electric discharge working machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01205930A (en) * 1988-02-10 1989-08-18 Fanuc Ltd Wire cutting and wire-cut electric discharge working machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6294748B1 (en) * 1998-05-28 2001-09-25 Mitsubishi Denki Kabushiki Kaisha Wire electrical discharge machine
DE112014006240B4 (en) 2014-02-20 2019-07-11 Mitsubishi Electric Corp. Wire EDM machine

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JP2644540B2 (en) 1997-08-25

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