JPS59142023A - Wire electrode supplying apparatus for wire cut electric discharge machine - Google Patents

Wire electrode supplying apparatus for wire cut electric discharge machine

Info

Publication number
JPS59142023A
JPS59142023A JP1580283A JP1580283A JPS59142023A JP S59142023 A JPS59142023 A JP S59142023A JP 1580283 A JP1580283 A JP 1580283A JP 1580283 A JP1580283 A JP 1580283A JP S59142023 A JPS59142023 A JP S59142023A
Authority
JP
Japan
Prior art keywords
wire electrode
wire
electrode
kite
pipe
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
Application number
JP1580283A
Other languages
Japanese (ja)
Inventor
Makoto Tanaka
誠 田中
Yasunori Kurahashi
倉橋 安則
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1580283A priority Critical patent/JPS59142023A/en
Publication of JPS59142023A publication Critical patent/JPS59142023A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING 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
    • B23H7/00Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/02Wire-cutting
    • B23H7/08Wire electrodes
    • B23H7/10Supporting, winding or electrical connection of wire-electrode

Abstract

PURPOSE:To enable, in an electric discharge machine provided with an automatic supplying apparatus of the wire electrode, the judgment whether the wire electrode is supplied through the correct path or not, by providing the wire electrode discharging mechanism with a higher speed than the electrode supplying speed, thereby detecting a change in the speed. CONSTITUTION:In an automatic wire electrode supplying apparatus for a wire cut electric discharge machine, the discharging speed of the wire electrode 38 in the discharging mechanism 74 is adapted to be higher than the supplying speed provided by the roller mechanism 24, 26 for supplying the wire electrode 38 into a pipe guide. If, at the time of the automatic insertion operation of the wire electrode 38, the electrode 38 is passed through the correct path and reaches the discharging mechanism 74, then the speed is increased and the change in the speed is detected by a detector. Thus, whether or not the inserting action of the wire electrode was correctly made can be checked.

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は、ワイヤ力、シト放電加工装置のワイヤ電極供
給装置、特に切断加工中にワイヤカット放電加工装置の
ワイヤ電極が断線(71コ場合に、新1こなワイヤ電極
を前記パイプガイドととも下降し、所定位置にて供給す
るか、被加工物にパイプガイドが接触
The present invention provides a wire force, a wire electrode supply device for a sheet electric discharge machining device, and especially a wire electrode supplying device for a sheet electric discharge machining device, in particular, when the wire electrode of a wire cut electric discharge machining device breaks during cutting (71), a new wire electrode is connected to the pipe guide. The pipe guide descends and feeds at a predetermined position, or the pipe guide comes into contact with the workpiece.

【・1こ位置にて
供給することができ、ま1こ同−被加工物に分@1・1
こ切断加工個所がある場合に、一旦ワイヤ電極を自動切
断(・、改めて次の切断加工個所にワイヤ電極を自動供
給することができ、その自動供給動作において、ワイヤ
電極が所定の経路に供給さネfコか否かを検出すること
が可゛能なウイヤカ、・ノド放電加工装置のワイヤ電極
供給装置に関するものである、 被加工物に対し、ワイヤ電iを微少間隙を介し・て□対
向させ、被加工物とワイヤ電極との間にパルス性の放電
を繰り返し発生基せ、放電エネルギーにより被加工物を
切断加工するワイヤカット放電加工装置が周知であり、
硬い金属等の複雑な切断加工を精度良く容易に行なうこ
とができる利点を有する、 し・か(・で、被加工物を放電切断しようとする場合に
は、ワイヤ電極を被加工物中を貫通させるように1で供
給することが必要である。ワイヤ電極は、通常細い金属
製のものであり、人手lこより被加工物中を貫通させる
ように12で供給することは一難を伴い、特に放電加工
中に異常事態の発生により【・ば(7ばワイヤ電極が断
線することがあり、従来はそのTこびごとに作業者は困
難なワイヤ電極の供給作業を強いらねてい1こ。さらに
、例えば順送り型の切断加工を行なう場合Qように、同
一被加工物中に複数個の分離し1こ切断加工部分がある
場合には、従来は−づの切断加工部分を切断加工後、一
旦ワイヤ電極を切断排除17、改めて次の切断加工開始
個所に人手(こより困難なワイヤ電極の再供給を行なわ
なければなA才、そのTコめにワイヤカット放電加工装
置の全自動化かでλ才、−その加工効率を著1.<低下
させる要因となってい1こ。 本発明は1.上記機番の課題に鑑みなさね1こものであ
り1、その目的はワイヤカット放電加工装置の全自動化
が可能なワイヤ電極の、所定位置での自動切断とその切
断残部のワイヤ電極の排除、および被加工物のワイヤ電
極を貫通さ+、′1こい位置にて、ワイヤ電極を自動供
給し7ワイヤ電極の走行速度の変化を検出することによ
って、ワイヤ電極の自動供給動作により、ワイヤ電極が
所定の経路に供給され1こが否かを検出することがで入
るワイヤ力・ント放−no工装置のワイヤ電極供給装置
を提供することに五る。 上記目的を達成する1こめに、本発明は、被加工物に対
l、ワイヤN極を微少間隙を介して対向させ、被2JD
工物♂ワイヤ電極とめ間にパルス性の放電を発生させて
、放電エネルギーにより被加工物を切断加工するワイヤ
力、ノド放電加工装置において、ワイヤ電極を摺動自在
に斐持する電極カイトを先端内部に具@+、t:パイプ
ガイドと、被加工物を介在させてt記パイプカイトと対
向させ1こ位置にワイヤ電極を摺動自在に支持する電極
ガイドと、パイプカイトを被加工物中を貫通させるよう
にI2で移動させる移動機構と、パイプカイトを所定位
置に固定するクランプ機構と、パイプカイトと一体とな
って移動し、ワイヤ電極の走行速度の変化を検出する検
出器及びパイプカイト内にワイヤ電極を供給すると共に
、ワイヤ電極断線時にワイヤ電極がパイプカイト内から
抜は出ないように制止することができる逆転防止機構を
備え1こ一対のローラー機構と、ワイヤ電極を所定位置
で切断し、ワイヤ電極の切断残部を排除する切断機構と
、被加工物中を貫通させる3(うに(・て供給L・1こ
ワイヤ電極の先端部を送り出すと共に、断線り、 f:
ワイヤ電極の残部を送り出し7排除するワイヤ電極送り
出し機構と、ワイヤ電極の1こるみを防止し・、常に加
工に必要な所定の張力を与える1こめのテンション機構
とから成ることを特徴とする、 以下、図面に基づいて本発明の好適な実施例を説明する
。 第1図は本発明に係乞ワイヤ電極供給装置の好適な実施
例が示さハている。 (1Gは被加工物で、゛水平面内で移動自在なXYクロ
ステーブル(図示せず)下に載置さねでいる、(12a
)おまび(12b)は被加工物θQの表面に予め穿設さ
ねでいる切断加工開始孔である。(1引tワイヤ電極供
給装置を支持【、ているカイトでワイヤ力・ノド放電加
工装置の本体(図示せず)に2軸方向、オなオフら垂直
方向に移動用能な軸に固着さねでいる。α6は移動機構
位の一部を構成するスライタニで、上記カイトU→に沿
って上下に自在に摺動できるように設けらねでいる。ス
ライダーutiiごは駆動ネジ(至)が螺挿され、まT
こ駆動ネジα(へ)の上雫部は、カイトα型上部に固着
さ第11こ駆動モーター四に連結さ第1.駆動ネジ(ト
)および駆動モーター翰にぼりスライダーαQがカイト
0→に沿−・て自動的に摺動する、スライターuQ上に
140一ブー機構@が設けられてイル。ローラー機構−
は一対のワイヤ電極送給ブー1−□およびウランブブー
リ−(ホ)から成り、ワイヤ送給プーリー1,241の
回転軸は、スライダーαQに固着さオ″11こワイヤ電
極送給モーター翰に連結さねでいる。 ま1こ、ワイヤを極送給プーリー(ハ)には逆転防止機
構(2)が付設さねでいる。更にクランプブー11−(
至)は、ビン(7)を弁【7でスライダ−(IGに回動
自在に固設さf″11こリンクQ先端部に回転自在軸承
さね、リンク(2)後端はコイルバネ(至)を介しスラ
イダーaQに結合さ第1ており、上記コイルバネ〜Aの
弾発力により、リンクGノ先端のウランブブーリ−(ホ
)はワイヤ電極送給プーリー(財)の周縁部に常に圧接
されている。(至)はワイヤ電t!ii@をその内部に
挿通(・、支持することができるパイプカイト(実施例
では外径2〜4M屑のパイプとしTコ)で、その上端部
が取付具−を介して移動機SOηを構成するスライダー
αQに固着さねでいる。パイプカイト(イ)の下端部内
にはワイヤ電aIL弼を摺動自在に支持する電極カイト
(第2図に示す)が嵌若さねでいる。カイト下端部には
、パイプガイド0−を所定位置に支持固定することがで
きるクランプ機構(6)が設けられている、クランプ機
構vJは、カイ10勺下部に固設し、1こV溝が刻切さ
れ1こクランプ機(44& )およびカイト0引こ固設
【、1こソレノイド−に連結されたクランプ板(44b
) 、:から成1す、ソレノイド顧を作動させると一方
のクランプ板(44b)が他方のクランプ板(44B)
から離れてクランプ状態が解放さね、またソレノイドに
)を復帰させるとソレノイド−とクランプ板(44b)
との間に挾持さtまたコイルスプリング(財)の弾発力
により一方のクランプ板(4jll ’)が他方のクラ
ンプ板(44B>に接近してクランプ状態を保持する。 F4はワイヤ電極弼を所定位置で切断し・、ワイヤ電極
(至)の切断残部を排除する切断機構であり、鵜はその
本体のアームで、アームI3は、カイトα勾側壁面に固
設さtilこ駆動モーター区によ−・で、水平面内で回
動できるように駆動モーターIQの回転軸に固着さti
でいる。アーム64内側には、アーム輪に沿って摺動自
在な口、ンドーが設けらね、同じくアーム64に固設さ
fllこソレノイド曽およびピノ■を介ξτ回動自在に
固設さf″11こリックI4に、にリソレノイド@を作
動させると、リンク12を介【、て口、7ド69がアー
ム@の先端方向へと移動する 才1コ、ロッド□□□後
端部とアーム−側壁面さの間にはコイルスプリング−か
張設さね、ソレノイド■を開放するとコイルスプリング
−の復元力にまt)ロッド輪がアーム6z後方・\と摺
動復帰する。口・ソドー先端曲には刃物−およびクラン
プビン(財)が固轄さね、ロ、ンド曽をアーム脅先端方
向に移動させて、ロッド輸先端面とアームか2内側壁面
との間に挿通シ・1こワイヤ電極(至)を、クランプビ
ン岐で固定すると共に、刃物−で切断できる。なお(、
クランプビン岐とロッド岐先端面との間にはコイルスプ
リング翰が挾持さね、クランプ・!ン(財)に所定の弾
発力を与えている。(2)は被加工物α0を介在させて
上述パイプガイド(至)中の電極ガイドと対向させ1こ
位置に設けらね1こ電極ガイドで、その内部にワイヤ電
極(至)を摺動自在に挿通し、ワイヤ電極I@7!?定
位置に支持する。電極ガイド(至)の下方には、被加工
物aOを貫通させるようにして供給し1こワイヤ電極(
2)の先(至) 端部を速り出すと共に、断線し1こワイヤ電極のへ部を
も送り出し被加工物aO中より排除するワイヤ電極送り
出し機構64)が設けら第1丁いる、ワイヤ電極送り出
し機構σ41(7’>一部は2個のローラー(76&)
。 (76b )から成り、2個のローラーは互いにその周
縁部を圧接させるように1.て設けらねていると共に、
一方のローラー(76b)の回転軸は巻き取りモーター
CI引こローラー(79a)、  t79b)およびベ
ルト(79C)を介し・で結合され、かつ別の巻き取り
ローラー(79d)と連結され、(79d) fnlt
 o−ブー(79111)が圧接さ第1るように設けら
れ、各々の巻取部間に案内パイプ(79f)が設けられ
ている、ま1こ、2個のローラー(76B)、  (7
6b3によって送り出さオ]るワイヤ電極(至)の速度
はローラー機構(2)によって供給されるワイヤ電極(
至)の速度より速くなるように設定されている。まTこ
カイトQ4上方には、ワイヤ電極(至)の1こるみを防
止L・、常に加工に必要な所定の張力をワイヤ電極(至
)に与える1こめのテンション機構員が設けられている
、テンション機構■はワイヤ電極(至)を巻き付け1こ
ボビン■と、ワイヤを極(至)がボビンよりIノずれな
いようワイヤ電極(至)の送給方向と逆方向に回転する
トルクモーターe4tから成り、トルクモーター−によ
りボビン輸が常にワイヤ電極(至)の送給方向に対し7
て一定の反発力を与えている。更にローラー6υは電磁
ブレーキ■に連結され、ワイヤ電極@ζこ所定の張力を
与えている、ローラー&9はワイヤ電極(至)の速度を
検出する1こめ速度検出器■に連結されTこ構成となっ
ている。 第2図は上述のワイヤ電極供給装置を用いてワイヤ電極
を被加工物中を貫通させるようにして供給する場合の拡
大断面図である。第1図を同一部材には同一符号を付し
て説明を省略する。輪はパイプガイド(至)内光端部に
嵌着さf″11こ電極カイトで、ダイヤモンドで成形さ
れたダイス状カイト(イ)が焼結金属体(財)を介して
パイプカイト(至)中に嵌着された構造となっている。 まTコ、同じく被加工物(10下方にある電極カイト@
も、ダイヤモンド製のダイス状ガイド員が焼結金属体 
に内定支持さ1+、ダイス状ガイド翰にいTこるテーパ
ー状のワイヤ導入部−の入口は、パイプカイト(至)の
外径より大きな径にさね1こ構造を成(・ている、 以上のような構成にまり、被加工物00表面上の切断加
工開始孔(12a)および(12h)にワイヤ電極(至
)を自動供給しようとする場合には、切断−工開始孔の
一つ、例えば(12B)と同軸上にパイプカイト(至)
を被加工物a0に対して相対的に移動させ、ソレノイド
■を作動させてクランプ機構に)を開放(・テハイフカ
イト(至)を解放状態にし、駆動モーター(ホ)を作動
させてスライダーQQをガイドQ4上方に移動させてパ
イプカイト(至)をカイトα◆最上部まで移動させた後
、スライダーQliのローラー機構翰を作動させてワイ
ヤ電極(至)の先端がパイプカイト(至)下端部から適
当量延出するまでワイヤ電極(至)をパイプガイド(至
)中に送給する。次に、切断機構−の駆動モー・ター6
1を作動させてアーム@をワイヤ電極(至)方向に18
0°回転させた後、ソレノイド岐を作動させて口・ソド
ー先端の刃物−にてワイヤ電極(至)をパイプガイド(
至)下端部より所定量(実施例においては8〜lONと
(71こ)の長さを残して切断1・、切断残部のワイヤ
電極(至)を口・ソド閃先端のクランプビン輪にまりク
ランプ【、1こままの状態で、駆動モーター−を作動さ
せて再びアーム153を元の位置まで戻しTこ後、クラ
ンプビン(財)のクランプ状態を開放」、てワイヤ電極
(至)の残部を排除する。次に、カイトQ4)上部の駆
動モーター翰を作動させて、スライターαQをガイドα
4に沿って降下し、スライダーα引こ固設置・たパイプ
カイト(至)を被加工物αQの切断加工開始孔(121
1)を貫通さセで被加工物QQ下方の電極カイト(2)
の手前まで降下させる。以上のような動作を行なつ1こ
後の状態は、第2図に示されている。この様な状態と[
7た後、スライターα0上のローラー機構翰を動作させ
て再びワイヤ電極(至)をパイプガイド(至)内に送給
し、電極カイトV4および(2)内を貫通させてワイヤ
電、極(至)の先端部をワイヤ電極送り出し機構q4に
より送り出させるようにする。ワイヤ電極(至)の先端
部がワイヤ11!極送り出【7機構q4に到達し送り出
されれば、ワイヤ電極(至)の走行速度は前記ローラー
機構@にょる送り出1゜速度よりも速くなり、その速度
変化を、速度検出器−によって検出することによりワイ
ヤ電極(至)が自動供給動作により所定の経路に供給さ
tl 7コことを検出する、しかシ7、ローラー機構(
2)が動作し、ワイヤ電極(至)の−送給全開始(、て
からある一定時間経過[・た後でもワイヤ電極送り出し
機構Q4まで至らずに、ワイヤ電極(至)の走行速度に
変化がない場合、ワイヤ電極(2)がワイヤ自動供給動
作において所定の経路に供給さtlfrが?−1ここと
を検出する。 所定の経路に供給さiff:と検出(・Tコ場合には、
ワイヤ電極(至)は案内パイプ(79f)を通りローラ
ー(79d) 、 ’t79e)に到達しワイヤ自動供
給される。 ワイヤ電極(至)が所定の経路に供給されたと検出【7
てから、ある一定時間経過I7た後ローラー機構翰の作
動を停止し、駆動モーターcAを動作させてスライダー
QQをカイトα引こ沿って上昇させ、パイフカ・fドC
aを被加工物GOより抜き取る。所定の位置に供給さオ
】なかっ1こと検出[71こ場合には、自動供給動作を
一旦中止し、駆動モーター翰を動作させスライダーαQ
をカイトQ4)上方に移動させてパイプガイド(至)を
カイト04)最上部まで移動させ1こ後、前記切断機構
−によるワイヤ電極(ハ)の切断動作を行ない、再び自
動供給動作を繰り返し・、所定の経路にワイヤ電極(至
)を供給する。 L7かる後、所定位置でソレノイド卿を復帰させテ、パ
イフカイドC113の下端部をカイト041下部のクラ
ンプ機構(9)にまりカイトα荀に固定する、この様に
(で、被加工物Qrj中の切断加工開始孔(12)L)
にワイヤ電極(ハ)を被加工物QCI中を貫通させるま
うに【、で、自動供給することができる。 次に、放電切断加工中(こ異常事態が発生【7てワイヤ
電極が断線【・1こ場合に、ワイヤ電極を再度自動供給
する場合について説明する。ワイヤ電極(至)カ断線す
るt1スライターaQ上のローラー機構翰は逆転防止機
構−を備えている1こめカイトa4上方のテンション機
構■によりワイヤ電極(へ)がパイプガイド(至)中よ
り抜は出す、ローラー機構Ci2によりクランプされt
こま才の状態を保持する。そt1故、ワイヤ電極(至)
はボビン■からパイプカイト(至)間は停止状態となり
、速度検出器■の回転が停止し、ワイヤ電極(至)が加
工中に断線(・1こことを判定する。 この時、ガイドα荀下端部の々ランプ機構(6)を開放
[・てパイプカイト(至)を開放状態とし、駆動モータ
ー(1)を回転させてパイプガイド(至)をカイトα勺
最上部才で上昇すると共に、断線しtこワイヤを極(至
)の残部をワイヤ電極送り出[・機構(74)を作動さ
せて、被加工物aQ中より巻取り排除する、次に、被加
工物QOに対してパイプカイト(至)を相対的に移動さ
せて、被加工物00の切断加工開始孔(12a3と同軸
上\ に来るまうにl、以後前述し1こ切断加工開始孔(12
a )にワ・fヤ電極@を供給する方法に従ってワイヤ
11t、極供給装置を動作させて、ワイヤ電極(至)を
被加工物αq中を貫通させるようにして自動供給する。 その後、ワイヤ電極(至)が断線[,1こ位置まで被加
工物QGに対1、てワイヤ電極(至)を既切断加工工程
に倣って放電させ才に移動を一断線個所まで達し71こ
後、再び放電切断加工を開始する、なお、被加工物Q0
に対するワイヤ電極(至)の上記相対移動は、全てワイ
ヤカット放電加工装置に設け1こCNO制御装置(図示
せず)を用いて自動的に行なえるようにすると良い。 一λに、同一被加工物QOに複数個の分離り、 Tコ切
断加工個所がある場合のワイヤ電極弼の供給方法につい
て説明する。 分離1・1こ被加工物OQ上の一つの切断加工個所の切
断加工終了後、切断加工中回転し、τい1こ被加工物O
QT方の巻取りモーターgaを停止1.7、ワイヤ電8
j弼の移動を止める。決心こ、クランプ機構(転)のソ
レノイドOQを動作させてクランプ状態を開放し、パイ
プカイト(至)をカイトQ41上部の駆動モーター四を
作動させてガイドa◆最上部へと上昇する、その後、切
断機構■のアーム脅をワイヤ電極(至)方向へと回転さ
せ、ソレノイド■を動作させて刃物−にてワイヤ電極(
至)を切断すると共に、巻取りモーター9時を回転させ
てワイヤ電極送り出し機構ぐ→にてワイヤ電極(至)の
切断残部を被加工物(ト)中より排除する、そL7て、
再び上記切断機構−をワイヤ電極(至)から離すように
元の位置へと回転させて戻し、被加工物αQの次の切断
加工開始孔(12b)とパイプカイト(至)とが同軸上
に来るように被加工物QQを移動し7、既述の切断加工
開始孔(12B)にワイヤ電極@を供給する方法に従っ
てワイヤ電極供給装置を動作させて、ワイヤ電極c38
を被加工物叫中を貫通させるまうにI7で自動供給z7
、放電切断加工を継続l、て行77うようにする。なお
、カイトα→上方のテンション機構■のトルクモーター
f!4はワイヤ電極(至)の送給方向き逆方向のトルク
をボビン■に常に与えてワイヤ電極(至)送給方向に対
し・て 一定の張力をワイヤ電極(至)に与える働きを
【、でおり、ワイヤ電極(至)をローラー機構(2)で
りうンブL・y、=状111でパイプカイト(至)をカ
イト041上部に上昇させる際に、ボビン■とローラー
機構(2)との間でワイヤ電極(至)が1こるまないよ
うに防止(でいる。 以上のように、本発明によるワイヤカット放電加工装置
のワイヤ電極供給装置によねば、切断加工中に異常事態
が発生し、ワイヤ電極が断線t、r、:場合に、自動的
にワイヤ電極断線残部を被加工物より排除し、新1こに
ワイヤ電極を被加工物の加工開始孔に被加工物を貫通さ
せるようにして自動供給することや、ま1こ、同一被加
工物中に分離(71コ複数個の切断加工個所かある場合
に、一つの切断加工個所の切断加工終了後、ワイヤ電極
を自動的に一旦切断」、て被加工物中より排除した後、
次の切断加工開始個所へとワイヤ電極を改めて自動供給
でき、切断加工を人手を介入せず継続し・で行なうこと
が可能となり、その自動供給動作によりワイヤ電極が所
定の経路に供給さねTコか否かを、早い段階で確実に検
出することが可能となる。その結果、ワイヤ電極供給装
置を、ワイヤカット放電加工装置のCNO制御装置を用
いて自動制御ずれは、ワイヤ力・71−放電加工装置の
全自動化、無人化が可能となると共に、その信頼性も大
幅に向上し加工効率を大幅に上昇させることが可能とな
る、
[・Can be fed at one position, and at the same time, the workpiece can be fed at 1/1 minute.
When there is a cutting area, the wire electrode can be automatically cut once (and then the wire electrode can be automatically supplied to the next cutting area, and in the automatic feeding operation, the wire electrode is fed to a predetermined path. This is related to a wire electrode supply device for a wire discharge machining device that can detect whether or not the wire is in contact with the workpiece. A wire-cut electric discharge machining device is well known, which repeatedly generates pulsed electric discharge between the workpiece and a wire electrode, and cuts the workpiece using the discharge energy.
It has the advantage of being able to easily perform complicated cutting operations on hard metals, etc., with high precision. The wire electrode is usually made of thin metal, and it is difficult to feed it manually so that it penetrates into the workpiece, especially when discharging. If an abnormal situation occurs during processing, the wire electrode may break, and in the past, the operator was forced to perform the difficult task of supplying the wire electrode every time this occurred.Furthermore, For example, when performing progressive cutting, when there are multiple separate cutting parts in the same workpiece, as shown in Q, conventionally, after cutting the - The electrode was cut and eliminated 17, and the next cutting process was started manually (it was more difficult to re-supply the wire electrode). -This is a factor that significantly reduces the machining efficiency.The present invention was developed in view of the above-mentioned problems, and its purpose is to fully automate wire-cut electrical discharge machining equipment. Automatic cutting of the possible wire electrode at a predetermined position, removal of the cut remaining wire electrode, and automatic feeding of the wire electrode at the position where the wire electrode of the workpiece is penetrated +, '1, to create a 7-wire electrode. By detecting the change in the running speed of the wire electrode, the automatic feeding operation of the wire electrode can detect whether the wire electrode is fed to a predetermined path or not. An object of the present invention is to provide a wire electrode supply device. First, to achieve the above object, the present invention has a wire N pole facing a workpiece with a small gap therebetween, and a wire electrode supplying device.
A wire force that generates a pulsed discharge between the workpiece wire electrode and the gap and cuts the workpiece using the discharge energy.In the nod electric discharge machining device, the tip of the electrode kite that slidably holds the wire electrode is used. Inside the tool @+, t: a pipe guide, an electrode guide that faces the t pipe kite with the workpiece interposed therebetween and slidably supports a wire electrode at the 1 position, and the pipe kite is placed inside the workpiece. a moving mechanism that moves I2 to penetrate the pipe kite, a clamp mechanism that fixes the pipe kite in a predetermined position, a detector that moves together with the pipe kite and detects changes in the running speed of the wire electrode, and the pipe kite. It is equipped with a reversal prevention mechanism that can prevent the wire electrode from coming out from inside the pipe kite when the wire electrode is disconnected.A pair of roller mechanisms and a pair of roller mechanisms hold the wire electrode in a predetermined position. A cutting mechanism that cuts the wire electrode and removes the cut remaining portion of the wire electrode;
It is characterized by consisting of a wire electrode feeding mechanism that sends out and removes the remaining part of the wire electrode, and a one-time tension mechanism that prevents the wire electrode from becoming sagging and always provides a predetermined tension necessary for processing. Hereinafter, preferred embodiments of the present invention will be described based on the drawings. FIG. 1 shows a preferred embodiment of the interlocking wire electrode supply device according to the present invention. (1G is a workpiece, which is placed under an XY cross table (not shown) that is movable in a horizontal plane. (12a)
) The opening (12b) is a cutting start hole which is pre-drilled in the surface of the workpiece θQ. (Supporting the wire electrode feeding device), the kite is attached to a shaft that can be moved in two axes to the main body (not shown) of the wire force/throat electrical discharge machining device (not shown), and in the vertical direction. α6 is a slide that constitutes a part of the moving mechanism, and is installed so that it can freely slide up and down along the above-mentioned kite U →. Screwed in
The upper drop part of this drive screw α is connected to the 11th drive motor 4, which is fixed to the upper part of the kite α type. A 140-boot mechanism is provided on the slider uQ, which automatically slides the slider αQ along the kite 0→ from the drive screw (g) and the drive motor. Roller mechanism
consists of a pair of wire electrode feeding booleans 1-□ and Urambu booley (E), and the rotating shaft of the wire feeding pulley 1,241 is fixed to the slider αQ. Also, a reversal prevention mechanism (2) is attached to the wire feed pulley (c).Furthermore, the clamp boot 11-(
The bottle (7) is rotatably fixed to the slider (IG) with the valve [7]. ) is coupled to the slider aQ via the coil spring A, and the spring boley (E) at the tip of the link G is always pressed against the peripheral edge of the wire electrode feeding pulley due to the elastic force of the coil spring A. (To) is a pipe kite (in the example, it is a scrap pipe with an outer diameter of 2 to 4M) that can insert (・, support) the wire electric t!ii@ into it, and its upper end is attached It is fixed to the slider αQ that constitutes the mobile device SOη through a tool.Inside the lower end of the pipe kite (A) is an electrode kite (shown in Figure 2) that slidably supports the wire electric aIL. The lower end of the kite is provided with a clamp mechanism (6) that can support and fix the pipe guide 0- in a predetermined position. A clamp plate (44b) with one V-groove cut and connected to one clamp machine (44&) and one solenoid
) , : When the solenoid is activated, one clamp plate (44b) is connected to the other clamp plate (44B).
When the solenoid (44b) is released and the solenoid is released, the solenoid and the clamp plate (44b) are released.
Also, due to the elastic force of the coil spring, one clamp plate (4jll') approaches the other clamp plate (44B) and maintains the clamped state. It is a cutting mechanism that cuts at a predetermined position and removes the cut remaining part of the wire electrode (to). Then, fix it to the rotating shaft of the drive motor IQ so that it can rotate in a horizontal plane.
I'm here. The inside of the arm 64 is provided with a port that can be slid freely along the arm ring, and is also fixedly attached to the arm 64. When the resolenoid @ is activated on the rear end of the rod I4, the lever 69 moves toward the tip of the arm via the link 12. A coil spring is tensioned between the side walls. When the solenoid (■) is released, the restoring force of the coil spring causes the rod ring to slide back to the rear of the arm 6z. The tip of the mouth/socket is bent. The cutter and the clamp bottle (incorporated) are in charge, and the wire is inserted between the end of the rod and the inner wall of the arm by moving the rod toward the tip of the arm. The electrode (to) can be fixed with a clamp pin and cut with a knife.
A coil spring wire is clamped between the clamp bottle prong and the rod prong tip, and the clamp! It gives a predetermined elasticity to the assets. (2) is a single electrode guide that is provided at a position opposite to the electrode guide in the pipe guide described above with the workpiece α0 interposed therebetween, and the wire electrode can be freely slid inside the guide. Insert the wire electrode I@7! ? Support in place. Below the electrode guide (to), a single wire electrode (
2) A wire electrode feeding mechanism 64) is provided which speeds up the end and also feeds out the end of the broken wire electrode and removes it from the workpiece aO. Electrode feeding mechanism σ41 (7'>Some have 2 rollers (76 &)
. (76b), and the two rollers 1. At the same time,
The rotating shaft of one roller (76b) is connected to a take-up motor CI pulling roller (79a), t79b) and a belt (79C), and is connected to another take-up roller (79d). ) fnlt
Two rollers (76B), (7
The speed of the wire electrode (to) fed out by 6b3 is determined by the speed of the wire electrode (to) fed by the roller mechanism (2).
The speed is set to be faster than the speed of At the top of the kite Q4, there is a tension mechanism member that prevents the wire electrode (end) from sagging and always applies a predetermined tension to the wire electrode (end) necessary for processing. , the tension mechanism ■ wraps the wire electrode (to) on one bobbin ■, and the torque motor e4t rotates the wire in the opposite direction to the feeding direction of the wire electrode (to) so that the pole (to) does not shift from the bobbin. The bobbin is always transported by a torque motor at a position of 7 in the feeding direction of the wire electrode (to).
gives a certain repulsion force. Further, roller 6υ is connected to an electromagnetic brake ■, which applies a predetermined tension to the wire electrode @ζ.Roller &9 is connected to a speed detector ■ that detects the speed of the wire electrode (T). It has become. FIG. 2 is an enlarged sectional view when the wire electrode is fed through the workpiece using the wire electrode feeding device described above. In FIG. 1, the same members are given the same reference numerals and their explanations will be omitted. The ring is a f''11 electrode kite that is fitted into the light end inside the pipe guide (to), and the dice-shaped kite (a) made of diamond is inserted through the sintered metal body (to) to the pipe kite (to). The structure is that the electrode kite is fitted inside the workpiece (10).
Also, the diamond die-shaped guide member is a sintered metal body.
The inlet of the tapered wire introduction part, which is internally supported by the die-shaped guide rod, has a tongue-and-groove structure with a diameter larger than the outer diameter of the pipe kite. When the wire electrode (to) is automatically supplied to the cutting start holes (12a) and (12h) on the surface of the workpiece 00 in a configuration like this, one of the cutting start holes, For example, there is a pipe kite (to) on the same axis as (12B).
is moved relative to the workpiece a0, and the solenoid (■) is activated to release the clamp mechanism. After moving the pipe kite (to) Q4 upward to the top of the kite α◆, operate the roller mechanism of the slider Qli to properly move the tip of the wire electrode (to) from the lower end of the pipe kit (to). The wire electrode (to) is fed into the pipe guide (to) until the wire electrode (to) is extended.Then, the drive motor 6 of the cutting mechanism
1 to move the arm @ towards the wire electrode (toward) 18
After rotating 0 degrees, activate the solenoid branch and use the cutter at the tip of the mouth to guide the wire electrode (to) the pipe guide (
1) Cut the remaining wire electrode (end) by leaving a predetermined length (8 to 71 mm in the example) from the lower end, and insert it into the clamp bottle ring at the tip of the mouth. Clamp [With the clamp still in place, operate the drive motor and return the arm 153 to its original position. After that, release the clamped state of the clamp bottle." Then, remove the remaining part of the wire electrode. Next, operate the drive motor at the top of the kite Q4) to guide the sliter αQ.
4, move the slider α to the cutting start hole (121
1) Penetrate the electrode kite below the workpiece QQ (2)
lower it to the front. The state after performing the above operations is shown in FIG. This kind of state and [
7, the roller mechanism on the sliter α0 is operated to feed the wire electrode (to) into the pipe guide (to) again, and the wire electrode (to) is passed through the electrode kites V4 and (2). (to) is sent out by the wire electrode sending mechanism q4. The tip of the wire electrode (to) is wire 11! Pole feeding [7] When the wire electrode reaches the mechanism q4 and is fed out, the running speed of the wire electrode (to) becomes faster than the feeding speed of the roller mechanism @Nyoru, and the speed change is detected by the speed detector. By doing so, it is detected that the wire electrode (to) is supplied to a predetermined path by an automatic feeding operation.
2) operates and the wire electrode (to) is fully fed (). Even after a certain period of time has elapsed, the wire electrode (to) does not reach the wire feeding mechanism Q4 and the running speed of the wire electrode (to) changes. If the wire electrode (2) is supplied to a predetermined route in the wire automatic supply operation, it is detected that tlfr is ?-1 here. If the wire electrode (2) is supplied to a predetermined route,
The wire electrode (to) passes through the guide pipe (79f) and reaches the roller (79d), 't79e), where the wire is automatically supplied. Detects that the wire electrode (to) is supplied to a predetermined path [7
Then, after a certain period of time I7 has elapsed, the operation of the roller mechanism is stopped, and the drive motor cA is operated to raise the slider QQ along the pull of the kite α.
A is extracted from the workpiece GO. It is detected that the feed is not in the specified position [71] In this case, the automatic feed operation is temporarily stopped, the drive motor is operated, and the slider αQ is
After moving the pipe guide (to) to the top of the kite Q4), the wire electrode (c) is cut by the cutting mechanism, and the automatic feeding operation is repeated again. , supplying a wire electrode (to) on a predetermined path. After L7, the solenoid is returned to the predetermined position, and the lower end of the pipe guide C113 is fitted into the clamp mechanism (9) at the bottom of the kite 041 and fixed to the kite α. Cutting start hole (12) L)
The wire electrode (C) can be automatically supplied by passing it through the workpiece QCI. Next, we will explain the case where the wire electrode is automatically supplied again when an abnormal situation occurs during electrical discharge cutting (7) and the wire electrode is disconnected. The roller mechanism holder on aQ is equipped with a reversal prevention mechanism.The wire electrode (to) is pulled out from the inside of the pipe guide by the tension mechanism ■ above the kite a4, and is clamped by the roller mechanism Ci2.
Maintain a top-of-the-line state. So t1, wire electrode (to)
is in a stopped state between the bobbin ■ and the pipe kite (to), the speed detector ■ stops rotating, and the wire electrode (to) is determined to be disconnected during machining (・1 here). At this time, the guide α Open the lower end ramp mechanism (6) to open the pipe kite (toward), rotate the drive motor (1) to raise the pipe guide (toward) at the top of the kite, When the wire breaks, the remaining part of the wire is sent out as a wire electrode.The mechanism (74) is activated to wind it up and remove it from the inside of the workpiece aQ.Next, the pipe is removed from the workpiece QO. Move the kite relatively until it is coaxial with the cutting start hole (12a3) of the workpiece 00.
The wire 11t and the pole supply device are operated according to the method of supplying wire electrodes to a), and the wire electrodes are automatically supplied so as to pass through the workpiece αq. After that, the wire electrode (to) is moved to the workpiece QG until the wire is broken [, 1 point], and then the wire electrode (to) is discharged in accordance with the cutting process that has already been performed. After that, the electric discharge cutting process is started again, and the workpiece Q0
It is preferable that the above-mentioned relative movement of the wire electrode (to) with respect to the wire electrode (to) be automatically performed using a CNO control device (not shown) provided in the wire-cut electrical discharge machining apparatus. In the following, a method of supplying wire electrodes when the same workpiece QO has a plurality of separate T-cutting locations will be explained. Separation 1. After finishing the cutting process at one cutting location on the workpiece OQ, it rotates during the cutting process and separates the workpiece O
Stop the winding motor ga on the QT side 1.7, wire electric 8
Stop the movement of シ\. Deciding to do so, operate the solenoid OQ of the clamp mechanism (rotation) to release the clamped state, and activate the drive motor 4 on the top of the kite Q41 to move the pipe kite (to) up to the top of the guide a◆.After that, Rotate the arm of the cutting mechanism ■ toward the wire electrode (toward), operate the solenoid ■, and use the blade to cut the wire electrode (toward).
At the same time, the winding motor 9 o'clock is rotated to remove the cut remaining part of the wire electrode (to) from the workpiece (g) by the wire electrode sending mechanism G →, and L7.
The cutting mechanism is again rotated back to its original position away from the wire electrode (to), so that the next cutting start hole (12b) of the workpiece αQ and the pipe kite (to) are coaxial. 7, operate the wire electrode supply device according to the method for supplying the wire electrode @ to the cutting start hole (12B), and insert the wire electrode c38.
Automatically feed Z7 with I7 to penetrate through the workpiece
, continue the electrical discharge cutting machining as shown in line 77. In addition, the torque motor f of the tension mechanism ■ above the kite α! 4 always applies torque in the opposite direction to the feeding direction of the wire electrode (to) to the bobbin ■, and applies a constant tension to the wire electrode (to) in the feeding direction of the wire electrode (to). Then, when lifting the pipe kite (to) to the upper part of the kite 041 with the wire electrode (to) with the roller mechanism (2), the connection between the bobbin ■ and the roller mechanism (2) is made. As described above, with the wire electrode supply device of the wire-cut electrical discharge machining apparatus according to the present invention, abnormal situations will not occur during cutting. , when the wire electrode is disconnected t, r:, the remaining wire electrode disconnection is automatically removed from the workpiece, and a new wire electrode is passed through the workpiece into the machining start hole of the workpiece. When the wire electrode is separated into the same workpiece (71 pieces) and there are multiple cutting areas, the wire electrode can be automatically fed after cutting at one cutting area. Once removed from the workpiece by cutting,
The wire electrode can be automatically supplied again to the starting point of the next cutting process, making it possible to continue the cutting process without human intervention, and this automatic feeding operation ensures that the wire electrode is not fed to the predetermined path. It becomes possible to reliably detect at an early stage whether or not this is the case. As a result, the automatic control deviation of the wire electrode supply device using the CNO control device of the wire cut electric discharge machining device can be completely automated and unmanned, and the reliability of the wire electric discharge machining device can be improved. It will be possible to significantly improve processing efficiency,

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

第1図は、本発明に係るワイヤ電極供給装置の好適な実
施例を示す斜視説明図、第2図は、ワイヤ電極を被加工
物中を貫通させるまうにして供給する場合のワイヤ電極
供給装置の一部拡大断面図である。 各図中同一部材には同一符号を付し・、頭は被加工物、
(至)はワイヤ電極、に)および鵜は電極ガイド、(至
)はパイプ〃イド、α力は移動機構、に)はウランブ機
構、翰は逆転防止機構、@はローラー機構、輪は切断機
構、ぐ→はワイヤ電極送り出し機構、輪はテンション機
構である、 代理人  葛 野 信 − 第1図 第2図
FIG. 1 is a perspective explanatory view showing a preferred embodiment of the wire electrode supply device according to the present invention, and FIG. 2 is a wire electrode supply device in which the wire electrode is supplied by penetrating the workpiece. FIG. 2 is a partially enlarged cross-sectional view. The same parts in each figure are given the same symbols, and the head is the workpiece,
(to) is the wire electrode, (to) is the pipe, α force is the moving mechanism, (to) is the uranbu mechanism, 翹 is the reversal prevention mechanism, @ is the roller mechanism, and the ring is the cutting mechanism. , gu → is the wire electrode feeding mechanism, and the ring is the tension mechanism. Representative: Makoto Kuzuno - Figure 1 Figure 2

Claims (1)

【特許請求の範囲】[Claims] (1)  被加工物に対し、ワイヤ電極を微少間隙を介
して対向させ、被加工物とワイヤ電極との間にパルス性
の放電を発生させて、放電エネルキーにより被加工物を
切断加工するワイヤカット放電加工装置において、ワイ
ヤ電極を摺動自在に支持する電極ガイドを先端内部に具
備(,1コバイブカイトと、被加工物を介在させて上記
パイプカイトと対向させrこ位置にワイヤ電極を摺動自
在に支持する電極カイトと、パイプカイトをパイプガイ
ドと対向し1こ電極カイトのJ)る方向に移動させる移
動機構と、パイプカイトを所定位置に固定するウランブ
機構と、パイプカイトと一体になって移動し、パイプガ
イド内にワイヤ電極を供給すると共に、ワイヤ電極断線
時にワイヤ電極がパイプガイド内より抜は出ないように
制止することができる逆転防止機構を備え1こ一対ノロ
ーラー機構と、ワイヤ電極を所定位置で切断【・、ワイ
ヤ電極の切断残部を排除する切断機構き、被加工物中を
貫通させるように(て供給し1こワイヤ電極の先端部を
送り出す亡共に、断線り、Tコワイヤ電極の残部を送り
出【、排除するワイヤ電極送り出し機構と、ワイヤ電極
のTコるみを防止[7、常に加工に必要な所定の張力を
与えるためのテンション機構とからなるワイヤカット放
電加工装置のワイヤ電極供給装章において、ワイヤ電極
の走行速度変化を検出する検出器を備えるとともに、前
記ワイヤ電極を供給する一対のローラ機構のワイヤ電極
供給速度より、ワイヤ電極送り出し速度の速いワイヤ電
極送り出し・機構を備えることを特徴とするワイヤ力・
シト放電加工装置のワイヤ電極供給装置。
(1) A wire that cuts the workpiece by placing a wire electrode facing the workpiece through a small gap and generating a pulsed electric discharge between the workpiece and the wire electrode using the discharge energy key. In a cut electrical discharge machining device, an electrode guide that supports a wire electrode slidably is provided inside the tip (1).The wire electrode is slid into a position opposite to the above-mentioned pipe kite with a workpiece interposed between the electrode guide and the pipe kite. An electrode kite that is freely supported, a moving mechanism that moves the pipe kite in a direction opposite to the pipe guide and a direction opposite to the electrode kite, and a Urambu mechanism that fixes the pipe kite in a predetermined position are integrated with the pipe kite. It is equipped with a reversal prevention mechanism that can supply the wire electrode into the pipe guide and prevent the wire electrode from coming out from inside the pipe guide when the wire electrode is disconnected. The electrode is cut at a predetermined position.A cutting mechanism is used to remove the cut remaining part of the wire electrode, and the cutting mechanism is used to feed the tip of the wire electrode through the workpiece. Wire-cut electrical discharge machining equipment consisting of a wire electrode feeding mechanism that feeds out the remaining part of the cowire electrode, and a tension mechanism that prevents the wire electrode from curling. The wire electrode feeding device is equipped with a detector for detecting changes in the running speed of the wire electrode, and has a wire electrode feeding speed that is faster than the wire electrode feeding speed of the pair of roller mechanisms that feed the wire electrode. Wire force, characterized by having a mechanism
Wire electrode supply device for electric discharge machining equipment.
JP1580283A 1983-02-02 1983-02-02 Wire electrode supplying apparatus for wire cut electric discharge machine Pending JPS59142023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1580283A JPS59142023A (en) 1983-02-02 1983-02-02 Wire electrode supplying apparatus for wire cut electric discharge machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1580283A JPS59142023A (en) 1983-02-02 1983-02-02 Wire electrode supplying apparatus for wire cut electric discharge machine

Publications (1)

Publication Number Publication Date
JPS59142023A true JPS59142023A (en) 1984-08-15

Family

ID=11898963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1580283A Pending JPS59142023A (en) 1983-02-02 1983-02-02 Wire electrode supplying apparatus for wire cut electric discharge machine

Country Status (1)

Country Link
JP (1) JPS59142023A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01146619A (en) * 1987-12-03 1989-06-08 Mitsubishi Electric Corp Wire electrode feeding device for wire electric discharge machining device
US20140190940A1 (en) * 2013-01-09 2014-07-10 Fanuc Corporation Wire electrical discharge machine which corrects machining path in corner portion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01146619A (en) * 1987-12-03 1989-06-08 Mitsubishi Electric Corp Wire electrode feeding device for wire electric discharge machining device
US20140190940A1 (en) * 2013-01-09 2014-07-10 Fanuc Corporation Wire electrical discharge machine which corrects machining path in corner portion
US9724776B2 (en) * 2013-01-09 2017-08-08 Fanuc Corporation Wire electrical discharge machine which corrects machining path in corner portion

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