JP2015009292A - Fine hole electric discharge machining device, and fine hole electric discharge machining method using the machining device - Google Patents

Fine hole electric discharge machining device, and fine hole electric discharge machining method using the machining device Download PDF

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JP2015009292A
JP2015009292A JP2013134654A JP2013134654A JP2015009292A JP 2015009292 A JP2015009292 A JP 2015009292A JP 2013134654 A JP2013134654 A JP 2013134654A JP 2013134654 A JP2013134654 A JP 2013134654A JP 2015009292 A JP2015009292 A JP 2015009292A
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electrode
electric discharge
discharge machining
guide
hole electric
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横道　茂治
Shigeji Yokomichi
茂治 横道
朋茂 石綿
Tomoshige Ishiwata
朋茂 石綿
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Elenix Inc
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Elenix Inc
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Abstract

PROBLEM TO BE SOLVED: To provide a fine hole electric discharge machining device and a fine hole electric discharge machining method using this machining device, for machining a blind hole opened to a cylindrical body inner space in a short time, without being limited depending on a thickness and a width of a cylindrical body.SOLUTION: In a fine hole electric discharge machining device, a Z axis slide 19 for freely positioning in the vertical direction is provided on a slide base 15, an electrode holder for holding an upper part of a rod-like or pipe-shaped electrode 31 is provided in rotation-driven manner in the Z axis slide, and electrode guide means for guiding a lower part of the electrode is provided on the slide base. In the fine hole electric discharge machining device, the electrode guide means is provided with a guide arm 37 for extending to a Z axis lower part from a slide base lower end part, and is provided with a first straight guide 39 for making the electrode advance straight to the lower end part vicinity of the guide arm, and electrode deflection means 41 for deflecting the advance direction of the electrode to the side direction from the Z axis direction, is provided under the first straight guide.

Description

本発明は細穴放電加工装置及び同装置を使用した細穴放電加工方法に関する。   The present invention relates to a fine hole electric discharge machining apparatus and a fine hole electric discharge machining method using the same apparatus.

従来、例えば円筒状の圧延ロールの長手方向中央部に温度センサを装着するためのセンサ装着穴の加工は、図９に示す如く圧延ロール１０１の側面からボール盤を用いてドリル加工で行われている。   Conventionally, for example, processing of a sensor mounting hole for mounting a temperature sensor in the longitudinal center of a cylindrical rolling roll has been performed by drilling using a drilling machine from the side of the rolling roll 101 as shown in FIG. .

然しながら、圧延ロール１０１の側面からのドリル加工では、圧延ロール１０１の幅Ｌが大きくなるほど、センサ装着穴１０３の圧延ロールの中央部までの距離Ｌ／２が長くなるため加工時間が長くなるという問題がある。   However, in drilling from the side surface of the rolling roll 101, as the width L of the rolling roll 101 increases, the distance L / 2 from the sensor mounting hole 103 to the center of the rolling roll becomes longer, so that the processing time becomes longer. There is.

また、深穴のドリル加工は困難であるため、センサ装着穴を有する圧延ロールの幅はドリル加工が可能な長穴の長さにより規制される。   Further, since deep hole drilling is difficult, the width of the rolling roll having the sensor mounting hole is regulated by the length of the long hole that can be drilled.

さらに、圧延ロールの側面からドリル加工を行うので、圧延ロール１０１の肉厚ｔを薄くすることができない。その結果、圧延ロール１０１の直径が大きくなり重量が重くなるという問題もある。   Furthermore, since drilling is performed from the side surface of the rolling roll, the thickness t of the rolling roll 101 cannot be reduced. As a result, there is also a problem that the diameter of the rolling roll 101 is increased and the weight is increased.

また特許文献１には、圧延ロールにおけるセンサ装着穴の加工ではないが、ディーゼルエンジン用インジェクタ（燃料噴射装置）の燃料リターン穴（１２）に対して、既設の収納穴（１１）を利用して、この収納穴（１１）から燃料リターン穴（１２）に連通する直線的な横穴（１３）を加工する放電加工方法および装置が記載されている。   Further, in Patent Document 1, although the sensor mounting hole in the rolling roll is not processed, the existing storage hole (11) is used for the fuel return hole (12) of the injector (fuel injection device) for the diesel engine. An electric discharge machining method and apparatus for machining a straight lateral hole (13) communicating from the storage hole (11) to the fuel return hole (12) is described.

上述の放電加工装置における電極（２）は、複数の構成要素からからなっている。すなわち、この電極（２）は導電材からなる半球形のカップ状に形成されており、この半球形のカップ状電極（２）に密着巻きのコイルばね（３）の先端をジョイント（６）を介して結合し、このコイルばね（３）の後端に導電材からなる円筒状の支持体（４）に結合された構成となっている。   The electrode (2) in the electric discharge machining apparatus described above is composed of a plurality of components. That is, the electrode (2) is formed in a hemispherical cup shape made of a conductive material, and the tip of a coil spring (3) tightly wound on the hemispherical cup-shaped electrode (2) is connected to the joint (6). And a cylindrical support (4) made of a conductive material at the rear end of the coil spring (3).

前記電極（２）の構成から理解できるように、コイルばねの外径は、そのばねに用いる線材の直径より必ず大きくなるのは必然である。また、前記電極（２）の直径はこの密着巻きのコイルばね（３）の外径とほぼ等しくなっている。したがって、特許文献１に記載の発明における方法においては、本願発明の細穴放電加工装置の如く、細径のパイプ又は棒状電極を使用する細穴加工を行うことはできない。   As can be understood from the configuration of the electrode (2), the outer diameter of the coil spring is necessarily larger than the diameter of the wire used for the spring. The diameter of the electrode (2) is substantially equal to the outer diameter of the coil spring (3) wound tightly. Therefore, in the method according to the invention described in Patent Document 1, it is not possible to perform fine hole machining using a small-diameter pipe or rod-like electrode as in the fine hole electric discharge machining apparatus of the present invention.

特開２００８−３０２４６１号公報JP 2008-302461 A

本発明は上述の如き問題を解決するために成されたものであり、本発明の課題は、被加工材である筒体の肉厚や幅に規制されることなく、筒体内空間へ開放する止まり穴の加工を短時間で行うことができる細穴放電加工装置及び同装置を使用した細穴放電加工方法を提供することである。   The present invention has been made to solve the above-described problems, and an object of the present invention is to open to the cylinder space without being restricted by the thickness or width of the cylinder as a workpiece. It is an object of the present invention to provide a fine hole electric discharge machining apparatus that can process a blind hole in a short time and a fine hole electric discharge machining method using the apparatus.

上述の課題を解決する手段として請求項１に記載の細穴放電加工装置は、スライドベースに上下方向に位置決め自在のＺ軸スライドを設け、該Ｚ軸スライドに棒状またはパイプ状電極の上部を保持する電極ホルダを回転駆動自在に設けると共に、前記スライドベースに前記電極の下部をガイドする電極ガイド手段を設けた細穴放電加工装置において、前記電極ガイド手段は前記スライドベース下端部からＺ軸下方へ伸長するガイドアームを設け、該ガイドアームの下端部近傍に前記電極を直進させる第１のストレートガイドを備え、該第１のストレートガイドの下方に前記電極の進行方向をＺ軸方向から側方へ偏向させる電極偏向手段を設けたことを特徴とするするものである。   As a means for solving the above-described problem, the thin hole electric discharge machining apparatus according to claim 1 is provided with a Z-axis slide which can be positioned in a vertical direction on a slide base, and holds an upper portion of a rod-shaped or pipe-shaped electrode on the Z-axis slide. In the thin hole electric discharge machining apparatus in which the electrode holder for rotating is provided so as to be rotatable, and the electrode guide means for guiding the lower part of the electrode to the slide base is provided, the electrode guide means is moved downward from the lower end portion of the slide base in the Z-axis direction. An extending guide arm is provided, and a first straight guide is provided in the vicinity of the lower end portion of the guide arm to move the electrode straight, and the traveling direction of the electrode is shifted from the Z-axis direction to the side below the first straight guide. An electrode deflecting means for deflecting is provided.

請求項２に記載の細穴放電加工装置は、請求項１に記載の細穴放電加工装置において、前記電極偏向手段が、前記電極を曲線状に曲げるＲガイド部材と、該Ｒガイド部材に接続する第２のストレートガイドとからなり、前記Ｒガイド部材で曲げられた電極を前記第２のストレートガイドでＺ軸方向から側方へ偏向させることを特徴とするものである。   The thin hole electric discharge machining apparatus according to claim 2 is the thin hole electric discharge machining apparatus according to claim 1, wherein the electrode deflection unit is connected to the R guide member that bends the electrode in a curved shape. And an electrode bent by the R guide member is deflected laterally from the Z-axis direction by the second straight guide.

請求項３に記載の細穴放電加工方法は、請求項１又は２に記載の細穴放電加工装置を使用し、前記ガイドアームを被加工材である筒体の内部空間に挿入位置決めし、前記電極偏向手段により偏向された電極により、前記被加工材である筒体に筒体内空間へ開放する止まり穴を加工することを特徴とするものである。   The fine hole electric discharge machining method according to claim 3 uses the fine hole electric discharge machining apparatus according to claim 1 or 2, inserts and positions the guide arm into an internal space of a cylindrical body as a workpiece, A blind hole that opens to the space inside the cylinder is processed in the cylinder that is the workpiece by the electrode deflected by the electrode deflection means.

本発明によれば、被加工材である筒体の肉厚や幅に規制されることなく、筒体内空間へ開放する止まり穴の加工を短時間で行うことができる細穴放電加工装置及び同装置を使用した細穴放電加工方法を提供することができる。   According to the present invention, a thin hole electric discharge machining apparatus capable of processing a blind hole opened to a cylindrical space in a short time without being restricted by the thickness or width of the cylindrical body as a workpiece, and the same A fine hole electric discharge machining method using the apparatus can be provided.

本願発明に係る細穴放電加工装置の第１の実施例の全体説明図。BRIEF DESCRIPTION OF THE DRAWINGS Whole explanatory drawing of the 1st Example of the fine hole electric discharge machining apparatus concerning this invention. 図１のＰ部拡大図で、筒体内からの止まり穴加工の説明図。It is P section enlarged view of FIG. 1, and explanatory drawing of the blind hole processing from a cylinder. 電極ガイドにおける電極偏向手段部分の正面図。The front view of the electrode deflection | deviation means part in an electrode guide. 図３におけるＡ−Ａ断面図。AA sectional drawing in FIG. 図３におけるＢ−Ｂ断面図。BB sectional drawing in FIG. 本願発明に係る細穴放電加工装置の第２の実施例（正面図）。The 2nd Example (front view) of the fine hole electric discharge machining apparatus which concerns on this invention. 図６におけるＱ部拡大図。The Q section enlarged view in FIG. 図６における平面図。The top view in FIG. 従来の筒体内からの止まり穴加工の説明図。Explanatory drawing of the blind hole processing from the conventional cylinder.

以下、本発明の実施の形態を図面によって説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１を参照するに、細穴放電加工装置１の基台３上には、Ｙ軸モータ４によりＹ方向（図１において左右方向）へ移動位置決め自在のＹ軸キャリッジ５が設けてある。   Referring to FIG. 1, a Y-axis carriage 5 that can be moved and positioned in the Y direction (left-right direction in FIG. 1) by a Y-axis motor 4 is provided on a base 3 of the narrow hole electric discharge machining apparatus 1.

前記Ｙ軸キャリッジ５上には筒状のワークＷを収容する加工槽７が設けてあり、この加工槽７内に前記ワークＷを垂直に固定する固定治具８がワークテーブル９上に設置してある。このＹ軸キャリッジ５の後方（図２において右方）の前記基台３上には、Ｘ方向（Ｙ方向に直交する方向）に離隔した一対のコラム１１が立設してある。   A processing tank 7 is provided on the Y-axis carriage 5 to accommodate a cylindrical work W. A fixing jig 8 for fixing the work W vertically in the processing tank 7 is installed on the work table 9. It is. On the base 3 behind the Y-axis carriage 5 (to the right in FIG. 2), a pair of columns 11 spaced in the X direction (a direction perpendicular to the Y direction) is erected.

前記コラム１１の上部には、図示しないＸ軸モータによりＸ方向へ移動位置決め自在のＸ軸キャリッジ１３が設けてある。そして、このＸ軸キャリッジ１３の前方にはスライドベース１５が上下動可能に係合してある。   An X-axis carriage 13 that can be moved and positioned in the X direction by an X-axis motor (not shown) is provided on the column 11. A slide base 15 is engaged in front of the X-axis carriage 13 so as to be movable up and down.

また、前記スライドベース１５には、Ｚ軸モータ１７により上下方向（Ｚ軸方向）に移動位置決め自在のＺ軸スライド１９が設けてある。   The slide base 15 is provided with a Z-axis slide 19 that can be moved and positioned in the vertical direction (Z-axis direction) by a Z-axis motor 17.

したがって、図示省略の制御装置の制御の下に、Ｚ軸モータ１７を適宜に回転駆動することにより、Ｚ軸スライド１９をＺ方向の所望の位置に移動することができる。   Therefore, the Z-axis slide 19 can be moved to a desired position in the Z direction by appropriately rotating and driving the Z-axis motor 17 under the control of a control device (not shown).

前記Ｚ軸スライド１９の下部には電極ホルダ２７が回転自在に設けてある。この電極ホルダ２７の構成は、本願出願人の出願である特開２００１−２８７１１９の明細書に記載の構成と同様であり、以下にその概要を説明する。   An electrode holder 27 is rotatably provided below the Z-axis slide 19. The configuration of the electrode holder 27 is the same as that described in the specification of Japanese Patent Application Laid-Open No. 2001-287119 filed by the applicant of the present application, and its outline will be described below.

上述の電極ホルダ２７は、前記Ｚ軸スライド１９の下部に周知のワンタッチカプラを介して着脱自在に設けてあり、電極モータ２９によって回転駆動することができように設けてある。   The electrode holder 27 described above is detachably provided under the Z-axis slide 19 via a known one-touch coupler, and is provided so as to be rotationally driven by an electrode motor 29.

また、電極ホルダ２７は、棒状またはパイプ状電極３１の上部を保持するコレットチャックと、図示されない給水装置から供給される水を前記棒状電極またはパイプ状電極３１を包囲するように噴射させるジェットノズル等を備えてなるものである。   The electrode holder 27 includes a collet chuck that holds an upper portion of the rod-shaped or pipe-shaped electrode 31, a jet nozzle that jets water supplied from a water supply device (not shown) so as to surround the rod-shaped electrode or the pipe-shaped electrode 31, etc. Is provided.

上記構成において、図示省略の制御装置の制御の下に、前記Ｘ軸キャリッジ１３、Ｙ軸キャリッジ５及びＺ軸スライド１９とを適宜に移動位置決めすることにより、前記棒状電極またはパイプ状電極３１の先端を筒状のワークＷの加工位置へ移動位置決めすることができる。   In the above configuration, the tip of the rod-shaped electrode or pipe-shaped electrode 31 is appropriately moved and positioned with respect to the X-axis carriage 13, the Y-axis carriage 5, and the Z-axis slide 19 under the control of a control device (not shown). Can be moved and positioned to the machining position of the cylindrical workpiece W.

図１、図２を参照するに、前記スライドベース１５の下端部に一体的に設けた支持板３３に、前記電極３１の下部をガイドする電極ガイド手段３５が設けてある。   Referring to FIGS. 1 and 2, an electrode guide means 35 for guiding a lower portion of the electrode 31 is provided on a support plate 33 provided integrally with a lower end portion of the slide base 15.

この電極ガイド手段３５は、前記スライドベース１５の下端部からＺ軸下方へ伸長し、筒状のワークＷの筒内部へ侵入可能なガイドアーム３７を備えている。   The electrode guide means 35 includes a guide arm 37 that extends downward from the lower end of the slide base 15 in the Z-axis direction and can enter the cylinder of the cylindrical workpiece W.

図３、図４に示す如く、前記ガイドアーム３７の中心には、前記電極３１の直径より若干大きい穴が設けてあり、ガイドアーム３７の下端部近傍には、前記電極３１を直進ガイドする第１のストレートガイド３９が設けてある。   As shown in FIGS. 3 and 4, a hole that is slightly larger than the diameter of the electrode 31 is provided in the center of the guide arm 37, and in the vicinity of the lower end portion of the guide arm 37, a guide for linearly guiding the electrode 31 is provided. One straight guide 39 is provided.

この第１のストレートガイド３９の下方に前記電極３１の進行方向をＺ軸方向から側方へ偏向させる電極偏向手段４１が設けてある。   Below this first straight guide 39, there is provided an electrode deflection means 41 for deflecting the traveling direction of the electrode 31 from the Z-axis direction to the side.

上述の電極偏向手段４１は、前記電極３１を曲線状に曲げるＲガイド部材４３と、該Ｒガイド部材４３に接続する第２のストレートガイド４５とからなっている。   The electrode deflecting means 41 includes an R guide member 43 that bends the electrode 31 in a curved shape, and a second straight guide 45 that is connected to the R guide member 43.

図３〜図５に示すごとく、前記Ｒガイド部材４３は、前記ガイドアーム３７の下端部近傍に固定した第１のストレートガイド３９と、前記ガイドアーム３７の下端部に固定した第２のストレートガイド４５との中間に配置してあり、第１のストレートガイド３９の出口と第２のストレートガイド４５の入口を円弧状の電極ガイド溝４７で接続するものである。   As shown in FIGS. 3 to 5, the R guide member 43 includes a first straight guide 39 fixed near the lower end portion of the guide arm 37 and a second straight guide fixed to the lower end portion of the guide arm 37. 45, the outlet of the first straight guide 39 and the inlet of the second straight guide 45 are connected by an arcuate electrode guide groove 47.

図５に示すごとく、前記ガイドアーム３７の第１のストレートガイド３９と第２のストレートガイド４５の間に設けた切欠き部４９に、前記Ｒガイド部材４３がボルト５１により着脱可能に装着してある。なお、ノックピン５３によりＲガイド部材４３の取付位置を正確に保持している。   As shown in FIG. 5, the R guide member 43 is detachably attached by a bolt 51 to a notch 49 provided between the first straight guide 39 and the second straight guide 45 of the guide arm 37. is there. The mounting position of the R guide member 43 is accurately held by the knock pin 53.

前記Ｒガイド部材４３の断面形状は、円の中心より上側の部分を弓形に切断除去した形状をなしており、このＲガイド部材４３を前記切欠き部４９に取り付けた際にその外周が前記ガイドアーム３７の下端部の外径と同一の円形になるように製作されている。   The cross-sectional shape of the R guide member 43 is a shape obtained by cutting and removing a portion above the center of the circle into an arcuate shape, and when the R guide member 43 is attached to the notch 49, the outer periphery thereof is the guide. The arm 37 is manufactured to have the same circular shape as the outer diameter of the lower end portion.

上記構成の細穴放電加工装置及び同装置を使用した細穴放電加工方法によれば、被加工材である筒体の肉厚や幅に規制されることなく、筒体内空間へ開放する止まり穴の加工を短時間で行うことができる。   According to the fine hole electric discharge machining apparatus having the above-described configuration and the fine hole electric discharge machining method using the same apparatus, the blind hole that opens to the space inside the cylinder without being restricted by the thickness or width of the cylinder that is the workpiece Can be processed in a short time.

図６〜図８は本願発明に係る細穴放電加工装置の第２の実施例であり、図６は正面図、図７は図６におけるＱ部拡大図、図８は平面図である。なお、第１の実施例と同一の機能を有する構成要素には同一の符号を付与してある。   6 to 8 show a second embodiment of the small hole electric discharge machining apparatus according to the present invention, FIG. 6 is a front view, FIG. 7 is an enlarged view of a portion Q in FIG. 6, and FIG. Components having the same functions as those of the first embodiment are given the same reference numerals.

細穴放電加工装置６０の機台６１には、図示しないＸ軸モータにより駆動されるＸ軸キャリッジ６３が設けてある。また、長尺の筒状のワークＷを水平支持するワークテーブル６５が前記機台６１に隣接して設けてある。   An X-axis carriage 63 driven by an X-axis motor (not shown) is provided on the machine base 61 of the small hole electric discharge machining apparatus 60. A work table 65 that horizontally supports a long cylindrical work W is provided adjacent to the machine base 61.

そして、前記Ｘ軸キャリッジ６３には、水平支持された筒状のワークＷの筒内部へ侵入可能なガイドアーム６７がＸ軸方向へ移動位置決め自在に設けてある。   The X-axis carriage 63 is provided with a guide arm 67 capable of entering the cylinder of a horizontally supported cylindrical workpiece W so as to be movable and positionable in the X-axis direction.

また、前記ガイドアーム６７には、棒状またはパイプ状電極３１の左端部を保持する電極ホルダ２７が設けてある。   The guide arm 67 is provided with an electrode holder 27 that holds the left end of the rod-like or pipe-like electrode 31.

また、前記ガイドアーム６７には、前記電極ホルダ２７から右方へ延伸する電極３１を水平にかつ直線的にガイドするガイドパイプが６９が設けてある。   The guide arm 67 is provided with a guide pipe 69 for horizontally and linearly guiding the electrode 31 extending rightward from the electrode holder 27.

そして、ガイドパイプが６９の右端部には、前記電極の先端部の進行方向をＸ軸方向から側方へ偏向させる電極偏向手段７１が設けてある。   An electrode deflection means 71 is provided at the right end of the guide pipe 69 to deflect the traveling direction of the tip of the electrode from the X-axis direction to the side.

上述の電極偏向手段７１は、前記電極３１を曲線状に曲げるＲガイド部材７３と、このＲガイド部に接続するストレートガイド７５とからなっている。   The electrode deflecting means 71 includes an R guide member 73 that bends the electrode 31 in a curved shape and a straight guide 75 that is connected to the R guide portion.

上記構成の細穴放電加工装置６０は、筒状のワークＷを水平に載置した状態で加工できるので、長尺の筒状のワークＷを筒体の肉厚や幅に規制されることなく、筒体内空間へ開放する止まり穴の加工を短時間で行うことができる。   Since the thin hole electric discharge machining apparatus 60 having the above configuration can process a cylindrical workpiece W placed horizontally, the long cylindrical workpiece W is not restricted by the thickness or width of the cylindrical body. The blind hole that opens into the cylindrical space can be processed in a short time.

１ 細穴放電加工装置
３ 基台
４ Ｙ軸モータ
５ Ｙ軸キャリッジ
７ 加工槽
８ 固定治具
９ ワークテーブル
１１ コラム
１３ Ｘ軸キャリッジ
１５ スライドベース
１７ Ｚ軸モータ
１９ Ｚ軸スライド
２７ 電極ホルダ
２９ 電極モータ
３１ 棒状またはパイプ状電極
３３ 支持板
３５ 電極ガイド手段
３７ ガイドアーム
３９ 第１のストレートガイド
４１ 電極偏向手段
４３ Ｒガイド部材
４５ 第２のストレートガイド
４７ 電極ガイド溝
４９ 切欠き部
５１ ボルト
５３ ノックピン
６０ 細穴放電加工装置
６１ 機台
６３ Ｘ軸キャリッジ
６５ ワークテーブル
６７ ガイドアーム
６９ ガイドパイプ
７１ 電極偏向手段
７３ Ｒガイド部材
７５ ストレートガイド
１０１ 圧延ロール
１０３ センサ装着穴
Ｗ ワーク DESCRIPTION OF SYMBOLS 1 Thin hole electrical discharge machining apparatus 3 Base 4 Y-axis motor 5 Y-axis carriage 7 Processing tank 8 Fixing jig 9 Worktable 11 Column 13 X-axis carriage 15 Slide base 17 Z-axis motor 19 Z-axis slide 27 Electrode holder 29 Electrode motor 31 Rod-shaped or pipe-shaped electrode 33 Support plate 35 Electrode guide means 37 Guide arm 39 First straight guide 41 Electrode deflection means 43 R guide member 45 Second straight guide 47 Electrode guide groove 49 Notch 51 Bolt 53 Knock pin 60 Fine Hole EDM 61 Machine base 63 X-axis carriage 65 Work table 67 Guide arm 69 Guide pipe 71 Electrode deflection means 73 R guide member 75 Straight guide 101 Rolling roll 103 Sensor mounting hole W Workpiece

Claims (3)

スライドベースに上下方向に位置決め自在のＺ軸スライドを設け、該Ｚ軸スライドに棒状またはパイプ状電極の上部を保持する電極ホルダを回転駆動自在に設けると共に、前記スライドベースに前記電極の下部をガイドする電極ガイド手段を設けた細穴放電加工装置において、前記電極ガイド手段は前記スライドベース下端部からＺ軸下方へ伸長するガイドアームを設け、該ガイドアームの下端部近傍に前記電極を直進させる第１のストレートガイドを備え、該第１のストレートガイドの下方に前記電極の進行方向をＺ軸方向から側方へ偏向させる電極偏向手段を設けたことを特徴とする細穴放電加工装置。 A Z-axis slide that can be positioned in the vertical direction is provided on the slide base, and an electrode holder that holds the upper part of the rod-shaped or pipe-shaped electrode is rotatably provided on the Z-axis slide, and the lower part of the electrode is guided to the slide base. In the narrow hole electric discharge machining apparatus provided with the electrode guide means for performing the operation, the electrode guide means is provided with a guide arm extending downward from the lower end of the slide base in the Z-axis direction, and the electrode is moved straight in the vicinity of the lower end of the guide arm. 1. A thin hole electric discharge machining apparatus comprising an electrode deflecting unit that includes one straight guide and deflects the traveling direction of the electrode from the Z-axis direction to the side under the first straight guide. 請求項１に記載の細穴放電加工装置において、前記電極偏向手段が、前記電極を曲線状に曲げるＲガイド部材と、該Ｒガイド部材に接続する第２のストレートガイドとからなり、前記Ｒガイド部材で曲げられた電極を前記第２のストレートガイドでＺ軸方向から側方へ偏向させることを特徴とする細穴放電加工装置。 2. The thin hole electric discharge machining apparatus according to claim 1, wherein the electrode deflection unit includes an R guide member that bends the electrode in a curved shape, and a second straight guide that is connected to the R guide member. A thin hole electric discharge machining apparatus characterized in that an electrode bent by a member is deflected laterally from the Z-axis direction by the second straight guide. 請求項１又は２に記載の細穴放電加工装置を使用し、前記ガイドアームを被加工材である筒体の内部空間に挿入位置決めし、前記電極偏向手段により偏向された電極により、前記被加工材である筒体に筒体内空間へ開放する止まり穴を加工することを特徴とする細穴放電加工方法。 The thin hole electric discharge machining apparatus according to claim 1 or 2, wherein the guide arm is inserted and positioned in an internal space of a cylindrical body as a workpiece, and the workpiece is processed by an electrode deflected by the electrode deflection means. A thin hole electric discharge machining method characterized in that a blind hole that opens into a cylindrical space is machined in a cylindrical body that is a material.
JP2013134654A 2013-06-27 2013-06-27 Fine hole electric discharge machining device, and fine hole electric discharge machining method using the machining device Pending JP2015009292A (en)

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