JPS60221220A - Wire-cut electric spark machine - Google Patents

Abstract

PURPOSE:To heighten the accuracy of a machined form, by providing a wire guide with minutely displacing elements made of an electrostrictive, magnetostrictive or thermostrictive substance, and by applying control signals to the elements to control them, or detecting signals. CONSTITUTION:A table fitted with a workpiece 4 is subjected to a form machining feed by an X-axis and a Y-axis motors regulated by a numerical controller. Electrostrictive elements 5a, 5b, 5c are provided around a guide 3 so that the elements extend in three radial directions. The elements 5a, 5b, 5c are connected to a control power source whose control voltages can be optionally altered and set. since a wire electrode 1 is accurately positioned by regulating the applied control voltages, the workpiece 4 is accurately machined.

Description

【発明の詳細な説明】 本発明はワイヤ電極を用いて放電加工するワイヤカット
放電加工装置に関する。ワイヤカット放電加工における
ワイヤ電極はリールから供給され、ガイド間を所要の張
力と速度をもって走行移動させ、このガイド間のワイヤ
Ｎ極に被加工体を対向さｌ−１対向間隙に水等の加二１
−液を供給しイアがらパルス電圧を加え放電を繰返して
加Ｔする。＃ｌＬＩ形状送りはＮＣ制御によって行イＣ
い送り形状通り（ハ輪部カッ］〜を行なうが、ワイヤ電
極の位ｉＮ出し制御、倒れ修正制御等を４．ｆ末の機械
装冒では曲中に高精度に行なうことがＴさ・ｒｌ、１、
Ｉこ１１１１　’ｌ−途中において加工進行方向を変え
Ｉご、ｌ揄ｐ　イｉど白Φ目的に；ｖ１１調整すること
もできず、これが加−１形状粕ｊσに影響するといった
欠点があ−）た、。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wire-cut electric discharge machining apparatus that performs electric discharge machining using a wire electrode. The wire electrode in wire-cut electrical discharge machining is supplied from a reel, and is moved between guides with the required tension and speed.The workpiece is placed opposite the N pole of the wire between the guides, and water is added to the opposing gap l-1. 21
- Supply the liquid and apply a pulse voltage while repeating the discharge to apply T. #lLI shape feeding is done by NC control.
The feed is carried out according to the shape (circle part), but it is important to perform the wire electrode position control, tilt correction control, etc. with high precision during the song in the mechanical equipment at the end of 4.f. ,1,
There is a drawback that it is not possible to change the direction of machining progress during the process and adjust the whiteness Φ; it is not possible to adjust v11, which affects the addition shape jσ. )Ta,.

本発明はこのにう＜ｋ点に３【１みて１７１案された１
）ので、ワイＶガイドに電１゛（４、Ｉｆ＆　”ｔ　４
４、ン’ｉ　シ（１，１ｐ４ｆ歪材の微小変位素子を設
（Ｊ、該微小変位素子に制御信号を加えて制ｔｉｎ　シ
、又は微小変位素子から１．１号を検出するようにした
ことを特徴どづ−る。The present invention is based on the point 3 [1, 171 proposed 1
), so add 1 ゛ (4, If &"t 4) to the Y V guide.
4. A micro-displacement element made of 1p4f strained material was installed. Characterize it.

以下図面の一実施例により本発明を説明−りる、。The present invention will be explained below with reference to an embodiment of the drawings.

第１図において、１はワイＡ７電極で、リール２がら供
給され、上下のガイド３間を所要の張力ど速度をもって
走行移動する。走行用のブレーキ、：１ヤプスタン等は
図示しない。４４よガイド′３間のツイヤ１に対向した
被加工体で、対向間隙にｌＪ、通常水加工′ａが供給さ
れ、パルス電圧が加えられ、放電を繰返ｌノて加工する
。加工形状送りは通常被加工体４を取イ」けるデープル
にＮＣ制御装置によって制御されるＸ軸、Ｙ輔モータに
よって加工送りされる。ガイド３の周りには放射三方向
に電子素子Ｊ”＋　！□５ｂ、５ｃが設けられる。十断
面を第２図に承り。６ａ　、６ｂ　、５ｃは各々電子素
子５ａ。In FIG. 1, 1 is a wire A7 electrode, which is supplied from a reel 2 and runs between upper and lower guides 3 with a required tension and speed. Brakes for running, such as a brake pedal, are not shown. 44 and the workpiece facing the wheel 1 between the guide '3, lJ and normal water machining 'a are supplied to the opposing gap, a pulse voltage is applied, and electric discharge is repeated to process the workpiece. The machining shape feed is normally carried out by X-axis and Y-axis motors controlled by the NC control device to the double that takes the workpiece 4. Electronic elements J"+!□ 5b and 5c are provided around the guide 3 in three radial directions. A cross section of the guide 3 is shown in FIG. 2. 6a, 6b and 5c are electronic elements 5a, respectively.

Ｅ）ｂ、５ｃに対応して設３３た制御信号の制御電源で
゛、いｒｒれｔ）制御信局電圧を任意に変更設定できる
。１ ？１マ極索子！５ａ　、５ｂ　、５ｃに例えばチタン酸
鉛を用い、その−制電歪特性は第３図の通り、印加電圧
にほぼ比例し直線ループの伸び変位を示す。E) With the control power source 33 for the control signal set corresponding to b and 5c, the control signal station voltage can be arbitrarily changed and set. 1? 1 MA Polar Sakuko! For example, lead titanate is used for 5a, 5b, and 5c, and as shown in FIG. 3, the electrostatic strain characteristic thereof is approximately proportional to the applied voltage and shows an elongation displacement of a linear loop.

５０Ｖ電圧で３７１ｍ伸び、１００Ｖで６ｆ１ｍ伸びる
１、そｌノで設定電圧を印加してる間その伸び寸法を維
持する。したがってワイヤ電極１の位置出し制御が印加
電圧の制御によってザブミクロン単位で高精度に制御す
ることができ、加工中にワイヤ電極１の撓み修正をする
ときなどにも高応答に容易に制御できる。It extends 371m with a voltage of 50V, and extends 6f1m with a voltage of 100V.The length of the extension is maintained while the set voltage is applied. Therefore, the positioning of the wire electrode 1 can be controlled with high accuracy in submicron units by controlling the applied voltage, and can be easily controlled with high response when correcting the deflection of the wire electrode 1 during processing.

また前記第３図のチタンＭ！（）はｌ：力を加えて３μ
ｍの変形を行なえば！５０　Ｖの電圧を発生し、６μｍ
では１００Ｖの起電力を発生りる１、冒’ｌがあるから
、これにより各電子素子！ｔａ、５１１．５ｃの信号電
圧によりワイ１７１からガイド３に加わる１１力と作用
方向とを容易に高精ｔＵに検出Ｊること−ができ、検出
信号にＪ：リガイドの修ｉ１１加圧５’Ａり速度の制御
を行なうことができ、作用圧力の変化にＪ：り板厚変化
を検出でき、まＩこ／ＩＩドｌ−ＩＣｔｉ方向のゆ化を
検出して、対応する加−１−条１′１０ＬＩＴＪ　Ｉグ
！制御を行なうことができる。これににり加−「溝幅を
一定にしコーナ精度を高めた高粘度加ＴをＩＩＩ　ｆｌ
ｌｊとする。Also, the titanium M in Figure 3 above! () is l: force is applied to 3μ
If we transform m! Generates a voltage of 50 V, 6 μm
Now, since there is a problem that generates an electromotive force of 100V, each electronic element! With the signal voltage of ta, 511.5c, it is possible to easily detect the 11 force and the direction of action applied from the wire 171 to the guide 3 with high precision, and the detection signal J: re-guide repair i11 pressurization 5' It is possible to control the A speed, detect the change in plate thickness based on the change in the working pressure, detect the warping in the direction of I/II, and apply the corresponding acceleration. Article 1'10LITJ Ig! can be controlled. In addition to this, we have developed a high viscosity T with a constant groove width and improved corner accuracy.
Let it be lj.

なお微小変位素子には磁歪＋Ａとか熱歪祠（形状記憶合
金を含む）等を用いることができ、組合１１使用するこ
とができる。：Ｉ：　ｔこガイドの位冒変位制御と変位
信号検出とを行／ｉわ（Ｊる場合、それを兼用させるこ
となく、制御と伏目検出用とを別々に組合せて設【Ｊる
ことｂできる１、また微小変位素子はガイド直交するＸ
１ｈ１１及びＹ　ｉｌ’ｌｌｌにＫＱ　ＰＩることがで
きる。Note that magnetostriction +A, thermostriction (including shape memory alloy), etc. can be used as the minute displacement element, and combination 11 can be used. :I: If the displacement control and displacement signal detection of the guide are performed/iwa (J), the control and the bind-off detection are separately combined without being used together. 1, and the minute displacement element is perpendicular to the guide
1h11 and Y il'll can be KQ PI.

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

第１図は本発明の一実施例側面図、第２図はその拡大十
断面図、第３図は電歪特性の一例グラフ図である。 １、ライ−１フ電極 ２、リール ３、ガイド ４、被加工体 りａ　、　５ｂ　、　５ｃ　、微小変位素子特Ｗ１出願
人 ５− 才ＩＩ４ 中圧・ＶFIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is an enlarged sectional view thereof, and FIG. 3 is a graph of an example of electrostrictive characteristics. 1, Life 1 electrode 2, reel 3, guide 4, workpiece body a, 5b, 5c, minute displacement element special W1 applicant 5-year old II4 medium pressure/V

Claims (1)

【特許請求の範囲】[Claims] リールから供給されるワイヤ電極をガイド間を所要の張
力と速度をもって走行移動させ、前記ガイド間のワイヤ
電極に被加工体を対向させ、対向間隙部分に加工液を供
給しながらパルス電圧を加え放電を繰返して加工するワ
イヤカット放電加工装置において、前記ワイヤのガイド
に電歪材、磁歪材若しくは熱歪材の微小変位素子を設け
、該微小変位素子に制御信号を加えて制御し、又は微小
変位素子から信号を検出するようにしたことを特徴とす
るワイヤカット放電加工装置。A wire electrode supplied from a reel is moved between the guides with the required tension and speed, the workpiece is opposed to the wire electrode between the guides, and a pulse voltage is applied while supplying machining fluid to the opposing gap to generate electrical discharge. In a wire-cut electric discharge machining device that repeatedly processes, a micro-displacement element made of electrostrictive material, magnetostrictive material, or thermostrictive material is provided in the guide of the wire, and a control signal is applied to the micro-displacement element to control it, or the micro-displacement A wire-cut electric discharge machining device characterized in that a signal is detected from an element.