JPH06179125A - Special electrode for machining inner surface deformed hole - Google Patents
Special electrode for machining inner surface deformed holeInfo
- Publication number
- JPH06179125A JPH06179125A JP35395392A JP35395392A JPH06179125A JP H06179125 A JPH06179125 A JP H06179125A JP 35395392 A JP35395392 A JP 35395392A JP 35395392 A JP35395392 A JP 35395392A JP H06179125 A JPH06179125 A JP H06179125A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- top end
- machining
- hole
- electro
- 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.)
- Withdrawn
Links
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば熱交換器管板の
拡管溝穴やガスタービン翼の冷却穴等の内面異形形状穴
を電解加工する場合に使用する特殊電極に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a special electrode used for electrolytically machining inner surface deformed holes such as expanded groove holes of a heat exchanger tube sheet and cooling holes of a gas turbine blade.
【０００２】[0002]
【従来の技術】図２に従来の電極による内面異形形状穴
の電解加工の説明図を示す。2. Description of the Related Art FIG. 2 is an explanatory view of a conventional electrolytic machining of a hole having a deformed inner surface with an electrode.
【０００３】図２に示すように従来の電解加工用電極１
１は、通常電極の先端部を残してそれ以外の全長部外周
を被覆部１２により被覆し、電極１１の内部に高圧加工
液４を注入しながら電極に電圧をかけ放電を行ないＮＣ
制御により送り速度を制御しつつワーク母材３に異形形
状穴を加工している。As shown in FIG. 2, a conventional electrode 1 for electrolytic processing is used.
The reference numeral 1 indicates the NC in which the outer periphery of the other electrode is covered with a coating portion 12 while leaving the tip portion of the electrode, and a voltage is applied to the electrode while injecting the high-pressure working liquid 4 into the electrode 11 to discharge.
An irregular shaped hole is machined in the workpiece base material 3 while controlling the feed rate by control.
【０００４】[0004]
【発明が解決しようとする課題】しかしながらこのよう
な従来型の電極を用いて内面異形形状穴の電解加工を行
った場合、放電を行なう電極１１の先端部とワーク母材
３の内径穴部との距離Ｌ′が被覆部１２の厚さのために
遠くなり、そのため電解効果が弱まり内面異形形状の段
差がつきにくい。However, when electrolytically machining a hole having an irregular shape on the inner surface using such a conventional electrode, the tip portion of the electrode 11 for discharging and the inner diameter hole portion of the workpiece base material 3 are formed. The distance L'becomes longer due to the thickness of the coating portion 12, so that the electrolytic effect is weakened and the step of the inner surface irregular shape is unlikely to be formed.
【０００５】そのためより大きな段差のある形状の穴が
加工不可能となる不具合があった。Therefore, there is a problem that a hole having a larger stepped shape cannot be machined.
【０００６】本発明は上記不具合点を解消する新たな内
面異形形状穴加工用特殊電極を提供することを目的とし
ている。It is an object of the present invention to provide a new special electrode for machining a hole having an irregular shape on the inner surface, which solves the above-mentioned problems.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
の構成として本発明の内面異形形状穴加工用特殊電極
は、外周を被覆部で被覆し、内部空間部に高圧加工液を
注入可能に構成した電解加工用電極において、該電極の
先端部を、その先端部断面寸法が前記被覆部の外周寸法
と同寸法となるよう膨出露出させたことを特徴としてい
る。As a structure for achieving the above-mentioned object, the special electrode for machining an irregularly shaped hole on the inner surface of the present invention has an outer periphery covered with a coating portion so that a high-pressure working fluid can be injected into the inner space portion. In the constituted electrode for electrolytic processing, the tip portion of the electrode is bulged and exposed so that the cross-sectional dimension of the tip portion is the same as the outer peripheral dimension of the covering portion.
【０００８】[0008]
【作用】本発明の内面異形形状穴加工用特殊電極は、露
出する電極先端部の寸法、形状が、電極外周を被覆する
被覆部分と同じになるような特殊電極を使用し、これに
より電極とワーク母材とを接近させ、より電解作用を大
きくした上で電極の送り速度をＮＣ制御することにより
大きな段差のある内面異形形状穴を加工することができ
る。The special electrode for forming a hole having an irregularly-shaped inner surface of the present invention uses a special electrode in which the exposed electrode tip has the same size and shape as the covering portion that covers the outer circumference of the electrode. It is possible to machine an inner surface irregularly shaped hole having a large step by approaching the work base material and increasing the electrolytic action and then NC controlling the feed rate of the electrode.
【０００９】[0009]
【実施例】以下図面により本発明の１実施例について説
明すると、図１は本発明の１実施例に係る特殊電極によ
る加工状態の説明図を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view of a working state by a special electrode according to the first embodiment of the present invention.
【００１０】図において、１は電極、１′は電極先端
部、２は電極の絶縁用被覆部で、電極１はその先端部
１′の形状、断面寸法が、被覆部２と同じになるよう膨
出露出して形成される。In the drawing, 1 is an electrode, 1'is an electrode tip portion, 2 is an insulating coating portion of the electrode, and the electrode 1 has a tip portion 1'having the same shape and sectional size as the coating portion 2. The bulge is exposed and formed.
【００１１】３は内面異形形状穴加工を施すべきワーク
母材で、例えば熱交換器管板の拡管溝穴やガスタービン
翼の冷却穴など高い冷却効果を要求されるもの等が考え
られる。Reference numeral 3 is a work base material to be machined to have an irregularly shaped hole on the inner surface, and it is conceivable that a material having a high cooling effect such as a pipe expansion groove of a heat exchanger tube sheet or a cooling hole of a gas turbine blade is required.
【００１２】４は高圧加工液で、電極１の内方中央部分
を流過し、矢印図示の加工液流れ方向で電極先端部１′
より外方に流出しワーク母材３の穴壁と電極間を上昇し
て外部に排出される。A high-pressure working fluid 4 flows through the inner central portion of the electrode 1, and the electrode tip portion 1'is in the working fluid flow direction indicated by the arrow.
It further flows outward, rises between the hole wall of the work base material 3 and the electrode, and is discharged to the outside.
【００１３】電極１は電解加工時、ワーク母材３に対し
矢示送り方向に送られ所要の電解加工を行なう。At the time of electrolytic processing, the electrode 1 is fed to the work base material 3 in the feed direction indicated by the arrow to perform the required electrolytic processing.
【００１４】Ｌはワーク母材３の穴壁面と電極先端部
１′との距離を示す。L indicates the distance between the wall surface of the hole of the work base material 3 and the electrode tip 1 '.
【００１５】従来一般に穴加工用の電解加工用電極は図
２において、前述説明したように通常電極の先端部を残
して被覆して使用するが、本発明においては、露出する
電極先端部１′が被覆部分２と同じ寸法となるような特
殊電極を使用することが特徴である。Conventionally, an electrolytic machining electrode for drilling is generally used by covering it with the tip of the normal electrode remaining as described above in FIG. 2, but in the present invention, the exposed electrode tip 1 '. The feature is that a special electrode having the same size as that of the covering portion 2 is used.
【００１６】このように電極先端部１′の形状、断面寸
法が、被覆部２と同じになるような特殊電極１を用い、
ワーク母材３と、電極先端部１′の距離Ｌを小さくする
ことにより電極よりの放電による電解性能を一層向上さ
せる。As described above, the special electrode 1 having the same shape and sectional size of the electrode tip portion 1'as the covering portion 2 is used,
By reducing the distance L between the work base material 3 and the electrode tip portion 1 ', the electrolytic performance by the discharge from the electrode is further improved.
【００１７】そしてこの特殊電極の送り速度を制御する
ことで、より段差の大きい異形形状穴を加工することが
可能となるものである。By controlling the feed speed of the special electrode, it becomes possible to machine a deformed hole having a larger step.
【００１８】以上本発明の１実施例について縷々説明し
たが、本発明は上記実施例に限定されるものでなく、本
発明技術思想の範囲内において種々設計変更が可能であ
り、それらは何れも本発明の技術的範囲に属する。Although one embodiment of the present invention has been briefly described above, the present invention is not limited to the above embodiment, and various design changes can be made within the scope of the technical idea of the present invention. It belongs to the technical scope of the present invention.
【００１９】[0019]
【発明の効果】従来の電極を用い送り速度を制御する電
解加工法では、ワーク母材に異形形状穴を穿設加工する
際、穿設される穴の内壁面は小さな段差しか加工できな
かったが、本発明の特殊電極を使用することにより、穿
設加工される異形形状穴の内壁面として、より大きな段
差を加工することが可能である。According to the conventional electrolytic processing method in which the feed rate is controlled by using the electrode, when the irregular shaped hole is formed in the work base material, only a small step can be formed on the inner wall surface of the hole to be formed. However, by using the special electrode of the present invention, it is possible to process a larger step as the inner wall surface of the irregularly shaped hole to be drilled.
【図１】本発明の１実施例に係る内面異形形状穴加工用
特殊電極による加工状態説明図である。FIG. 1 is an explanatory view of a machining state by a special electrode for machining an inner surface irregularly shaped hole according to an embodiment of the present invention.
【図２】従来電極による電解加工説明図である。FIG. 2 is an illustration of electrolytic processing using a conventional electrode.
１ 電極 １′ 電極先端部 ２ 被覆部 ３ ワーク母材 ４ 高圧加工液 Ｌ ワークと電極との距離 1 Electrode 1'Electrode tip 2 Cover 3 Workpiece base material 4 High pressure machining liquid L Distance between work and electrode
Claims (1)
圧加工液を注入可能に構成した電解加工用電極におい
て、該電極の先端部を、その先端部断面寸法が前記被覆
部の外周寸法と同寸法となるように膨出露出させたこと
を特徴とする内面異形形状穴加工用特殊電極。1. In an electrode for electrolytic processing, the outer periphery of which is covered with a coating so that a high-pressure working liquid can be injected into an internal space, the tip of the electrode has a cross-sectional dimension of the tip that is the outer periphery of the coating. A special electrode for machining irregularly shaped holes on the inner surface, which is bulged and exposed to have the same dimensions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35395392A JPH06179125A (en) | 1992-12-16 | 1992-12-16 | Special electrode for machining inner surface deformed hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35395392A JPH06179125A (en) | 1992-12-16 | 1992-12-16 | Special electrode for machining inner surface deformed hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06179125A true JPH06179125A (en) | 1994-06-28 |
Family
ID=18434328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35395392A Withdrawn JPH06179125A (en) | 1992-12-16 | 1992-12-16 | Special electrode for machining inner surface deformed hole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06179125A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1098068A2 (en) * | 1999-11-03 | 2001-05-09 | General Electric Company | Striated cooling hole |
| JP2005177984A (en) * | 2003-12-20 | 2005-07-07 | Robert Bosch Gmbh | Method and device for removing metallic material of workpiece |
| JP2011062811A (en) * | 2009-09-18 | 2011-03-31 | General Electric Co <Ge> | Curved electrode, electrochemical machining method, and assembly using the electrochemical machining method |
| WO2015122103A1 (en) * | 2014-02-17 | 2015-08-20 | 国立大学法人東京農工大学 | Electrochemical machining apparatus, electrochemical machining method, and tool electrode |
| CN108213622A (en) * | 2017-12-19 | 2018-06-29 | 内蒙古北方重工业集团有限公司 | The once electrolytic processing molding method of stock endoporus difference groove profile |
| CN110340469A (en) * | 2019-05-29 | 2019-10-18 | 南京航空航天大学 | Gas-liquid compound electrode and electrochemical machining method |
| CN110625207A (en) * | 2019-09-23 | 2019-12-31 | 常州工学院 | Cathode tool and method for removing burrs of internal cross hole through electrolysis |
| CN112317892A (en) * | 2020-10-28 | 2021-02-05 | 宁波震裕科技股份有限公司 | Straight locking ring wire cut electrical discharge machining process method |
-
1992
- 1992-12-16 JP JP35395392A patent/JPH06179125A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1098068A2 (en) * | 1999-11-03 | 2001-05-09 | General Electric Company | Striated cooling hole |
| EP1098068A3 (en) * | 1999-11-03 | 2003-09-17 | General Electric Company | Striated cooling hole |
| JP2005177984A (en) * | 2003-12-20 | 2005-07-07 | Robert Bosch Gmbh | Method and device for removing metallic material of workpiece |
| JP2011062811A (en) * | 2009-09-18 | 2011-03-31 | General Electric Co <Ge> | Curved electrode, electrochemical machining method, and assembly using the electrochemical machining method |
| WO2015122103A1 (en) * | 2014-02-17 | 2015-08-20 | 国立大学法人東京農工大学 | Electrochemical machining apparatus, electrochemical machining method, and tool electrode |
| JPWO2015122103A1 (en) * | 2014-02-17 | 2017-03-30 | 国立大学法人東京農工大学 | Electrolytic machining apparatus, electrolytic machining method, and tool electrode |
| CN108213622A (en) * | 2017-12-19 | 2018-06-29 | 内蒙古北方重工业集团有限公司 | The once electrolytic processing molding method of stock endoporus difference groove profile |
| CN110340469A (en) * | 2019-05-29 | 2019-10-18 | 南京航空航天大学 | Gas-liquid compound electrode and electrochemical machining method |
| CN110625207A (en) * | 2019-09-23 | 2019-12-31 | 常州工学院 | Cathode tool and method for removing burrs of internal cross hole through electrolysis |
| CN112317892A (en) * | 2020-10-28 | 2021-02-05 | 宁波震裕科技股份有限公司 | Straight locking ring wire cut electrical discharge machining process method |
| CN112317892B (en) * | 2020-10-28 | 2022-02-18 | 宁波震裕科技股份有限公司 | Straight locking ring wire cut electrical discharge machining process method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6627054B2 (en) | Electrode for electrochemical machining | |
| US5306401A (en) | Method for drilling cooling holes in turbine blades | |
| JP3263397B2 (en) | Apparatus for forming shaped holes in objects such as gas turbine engine parts | |
| JPH06179125A (en) | Special electrode for machining inner surface deformed hole | |
| CN106825805A (en) | Demountable combined-type tool cathode and its electrolytic mill milling method | |
| Wang et al. | Fabrication of micro-dimple arrays by AS-EMM and EMM | |
| US8900424B2 (en) | Electrode and electrochemical machining process for forming non-circular holes | |
| US5122242A (en) | Electrochemical machining process | |
| CN104741711A (en) | Asymmetrical-depth micro-groove electrode and method for electrical discharge machining micro-bending holes by application of the same | |
| US4228673A (en) | Die assembly and method of making the same | |
| US3364718A (en) | Extrusion apparatus | |
| US3284327A (en) | Electrolytic machining process using a gas-containing electrolyte | |
| CN112059341B (en) | Electric spark-electrolysis composite machining method for micro-holes with liquid backing | |
| JP2002307249A (en) | Hole machining method and hole machining electrode | |
| JP3832515B2 (en) | Honeycomb structure extrusion method | |
| CN103862120B (en) | The forming method of valve throttle disc maze trough | |
| CN105499533A (en) | Pressure injecting chamber for high pressure casting, and production method of pressure injecting chamber | |
| CN107584304A (en) | Hydraulic clamp for thin-wall case | |
| CN111375848A (en) | Electric melting explosion special-shaped deep hole machining electrode | |
| JPH02147128A (en) | Working method for bearing in pressing | |
| WO2024142907A1 (en) | Electrochemical machining tool, electrochemical machining device, and blade manufacturing method | |
| CN101367144A (en) | High-speed punched hole tubular shape electrode | |
| CN220134072U (en) | Be used for diesel engine cylinder cap process hole shutoff structure | |
| KR960033612A (en) | Assembly and finishing method of pre-fabricated valve seat ring in powder metallurgy | |
| Akiyoshi et al. | Planarization of a layer made by using electrical discharge machining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000307 |