【０００１】[0001]
【産業上の利用分野】本発明は、タービンロータの翼溝
の研磨を行う際に使用される電解研磨装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic polishing apparatus used for polishing blade grooves of a turbine rotor.
【０００２】[0002]
【従来の技術】タービンロータの翼溝の従来の研磨方法
としては、図４に示すように人手により砥石を回転グラ
インダー１９等で回転させて表面スケールを除去後、徐
々に砥石の目を小さくし、最後にバフ仕上げを行うのが
一般的である。2. Description of the Related Art As a conventional method for polishing blade grooves of a turbine rotor, as shown in FIG. 4, a grindstone is manually rotated by a rotary grinder 19 or the like to remove surface scale, and then the grindstone is gradually made smaller. , It is common to finish the buffing.
【０００３】[0003]
【発明が解決しようとする課題】タービンロータの点検
検査では、ロータ翼溝の金属組織レプリカの採取を行っ
ている。このため、表面スケールを除去した後の研磨が
必要となり、従来の技術の項で述べたように人手によっ
て研磨作業を行っている。しかし、翼溝間は狭く複雑な
形状であるため監視しずらく、また、無用に削り過ぎ無
いためにも、この作業に熟練した作業者を必要としてい
るのが実情である。In the inspection inspection of the turbine rotor, a metallographic replica of the rotor blade groove is collected. Therefore, polishing is required after removing the surface scale, and the polishing work is performed manually as described in the section of the prior art. However, since the space between the blade grooves is narrow and has a complicated shape, it is difficult to monitor, and in order to prevent unnecessary cutting, it is necessary to have a skilled worker for this work.
【０００４】そこで、本発明は、この様な実情を顧みて
なされたもので、翼溝間は狭く複雑な形状でも金属組織
レプリカの採取のための研磨を容易に実施できる電解研
磨装置を提供することを目的とする。Therefore, the present invention has been made in consideration of such an actual situation, and provides an electrolytic polishing apparatus capable of easily performing polishing for collecting a metal structure replica even if the blade grooves are narrow and the shape is complicated. The purpose is to
【０００５】[0005]
【課題を解決するための手段】本発明は、前述の課題を
解決するためになされたもので、タービンロータ翼溝に
挿入できるホルダーと、このホルダーの内部で前後にス
イングするようにピンで連結し、電解液が循環できる管
路とその管路内の電解液に通電する電極とを備えたチャ
ンバーと、前後にスイングする前記チャンバーを前記タ
ービンロータ翼溝に押し付ける押圧手段と、前記チャン
バーに埋め込み前記管路と繋がり対象部に接すシールと
を具備してなる研磨ヘッドと、この研磨ヘッドへ電解液
を循環させる電解液循環ユニットと、前記電極に通電さ
せる電源とで構成したことを特徴とする電解研磨装置で
ある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is connected to a holder that can be inserted into a turbine rotor blade groove by a pin so that the holder swings back and forth. And a chamber provided with a conduit through which the electrolytic solution can circulate and an electrode for energizing the electrolytic solution in the conduit, a pressing means for pressing the chamber swinging back and forth against the turbine rotor blade groove, and embedding in the chamber A polishing head comprising a seal connected to the pipe line and in contact with a target portion, an electrolytic solution circulation unit for circulating an electrolytic solution to the polishing head, and a power supply for energizing the electrodes. It is an electrolytic polishing device that does.
【０００６】[0006]
【作用】前述した手段によれば、研磨ヘッドのホルダー
を翼溝に挿入し、押圧手段によってチャンバーをタービ
ンロータ翼溝に押し付けて固定することにより、チャン
バーに設けたシールが翼溝に密着するので、チャンバー
内の管路からの電解液は外へ漏れることなく研磨対象部
に接触できる。According to the above-mentioned means, the holder of the polishing head is inserted into the blade groove, and the chamber is pressed against the turbine rotor blade groove by the pressing means to fix the chamber. The electrolytic solution from the conduit in the chamber can contact the polishing target portion without leaking to the outside.
【０００７】この電解液は、研磨ヘッド外に設けた電解
液循環ユニットの作動によって循環し、上述したシール
を経て研磨対象部に達する。また、管路内の電極には、
これも研磨ヘッド外に設けた電源から通電がなされる。
こうして電解液に通電すると、公知の電解加工の原理に
より電解研磨を行うことが可能となる。This electrolytic solution is circulated by the operation of an electrolytic solution circulating unit provided outside the polishing head, and reaches the polishing target portion through the above-mentioned seal. Also, for the electrodes in the conduit,
This is also energized by a power source provided outside the polishing head.
By energizing the electrolytic solution in this manner, it becomes possible to carry out electrolytic polishing by the known principle of electrolytic processing.
【０００８】[0008]
【実施例】本発明の実施例を図面により説明する。Embodiments of the present invention will be described with reference to the drawings.
【０００９】図１は、本発明の一実施例における電解研
磨装置の全体構成図である。図に示すように、タービン
ロータ１ａのロータ翼溝１ｂは、クリスマスツリーの様
な複雑な形状であるが、この谷の部分をロータ翼溝１ｂ
に挿入した研磨ヘッド２による電解加工によって表面の
研磨を行う。FIG. 1 is an overall configuration diagram of an electrolytic polishing apparatus according to an embodiment of the present invention. As shown in the figure, the rotor blade groove 1b of the turbine rotor 1a has a complicated shape like a Christmas tree.
The surface is polished by electrolytic processing by the polishing head 2 inserted in the.
【００１０】続いて研磨ヘッド２の構成を図２の正面図
及び図３の横断面図によって説明する。研磨ヘッド２
は、狭く複雑な形状のロータ翼溝１ｂに合わせて小型で
薄く、かつ、翼溝１ｂの凹凸に合わせた形状のホルダー
３と、耐腐食性の良いテフロン製のチャンバー４とで構
成されている。チャンバー４はホルダー３の内部へ収納
されており、その上部は２本のピン５で連結されてい
る。また、ホルダー３には押圧手段としてネジ式のノブ
６を設けてあり、このノブ６を押すことで、チャンバー
４は前述のピン５を支点として前方へスイングして広が
る。このような機構を有するホルダー３は、チャンバー
４を収納した状態でロータ翼溝１ｂへ横から挿入するこ
とができる。挿入後ノブ６によってホルダー３とチャン
バー４は広がり、チャンバー４が反力で前方に押される
と、チャンバー４中心にうめ込まれたテフロンゴム製の
シール７は、ロータ翼溝１ｂの研磨対象部に密着する。
このシール７中心には研磨口８が開けてあり、この研磨
口８はチャンバー４内部の電解液が循環する管路９と繋
がっているので、この研磨口８が接している対象部が電
解研磨される範囲と成る。チャンバー４の内部には電解
液に通電する電極１０が電極ホルダ１１中心を貫通し、
液漏れ防止のシールブッシュ１２とブッシュ１３を介し
て管路９内に達している。なお、電極１０の材質の耐腐
食性を考慮した白金製である。また、管路９はチャンバ
ー４内を電解液が循環できるようにＵ字に加工され、そ
の両端部には継手１４を介して液循環ホース１５を接続
している。Next, the structure of the polishing head 2 will be described with reference to the front view of FIG. 2 and the transverse sectional view of FIG. Polishing head 2
Is composed of a holder 3 having a small size and a thin shape corresponding to the rotor blade groove 1b having a narrow and complicated shape and a shape corresponding to the unevenness of the blade groove 1b, and a chamber 4 made of Teflon having good corrosion resistance. . The chamber 4 is housed inside the holder 3, and its upper part is connected by two pins 5. Further, the holder 3 is provided with a screw type knob 6 as a pressing means, and by pushing the knob 6, the chamber 4 swings forward with the pin 5 as a fulcrum and spreads out. The holder 3 having such a mechanism can be laterally inserted into the rotor blade groove 1b in a state where the chamber 4 is housed. After the insertion, the holder 3 and the chamber 4 are spread by the knob 6, and when the chamber 4 is pushed forward by the reaction force, the Teflon rubber seal 7 embedded in the center of the chamber 4 becomes the polishing target portion of the rotor blade groove 1b. In close contact.
A polishing port 8 is opened at the center of the seal 7, and since the polishing port 8 is connected to a pipe line 9 in which the electrolytic solution in the chamber 4 circulates, the target portion in contact with the polishing port 8 is electropolished. The range is Inside the chamber 4, an electrode 10 for energizing the electrolytic solution penetrates through the center of the electrode holder 11,
It reaches the inside of the conduit 9 via a seal bush 12 and a bush 13 for preventing liquid leakage. The electrode 10 is made of platinum in consideration of the corrosion resistance of the material. Further, the conduit 9 is processed into a U shape so that the electrolytic solution can circulate in the chamber 4, and a liquid circulation hose 15 is connected to both ends of the conduit 9 via joints 14.
【００１１】この液循環ホース１５の反対端部には電解
液循環ユニット１６が接続されてループ状となり、この
内部の循環ポンプの作動によって電解液は研磨ヘッド２
へ供給される。また、前述した電極１０には電解液に通
電するため電源ケーブル１７が接続され、電源１８から
その整流した電力を供給する。このような構成の電解研
磨装置により、ロータ翼溝１ｂの電解研磨を可能にする
と共に、装置を可搬可能なものに小型化することができ
る。An electrolytic solution circulation unit 16 is connected to the opposite end of the liquid circulation hose 15 to form a loop, and the electrolytic solution is polished by the polishing head 2 by the operation of a circulation pump inside the hose 15.
Is supplied to. A power supply cable 17 is connected to the electrode 10 for supplying electricity to the electrolytic solution, and the rectified power is supplied from the power supply 18. With the electrolytic polishing apparatus having such a configuration, it is possible to perform the electrolytic polishing of the rotor blade groove 1b and reduce the size of the apparatus to be portable.
【００１２】[0012]
【発明の効果】前述した本発明の電解研磨装置によれ
ば、従来熟練の作業者を必要としているロータ翼溝の表
面研磨作業をだれでも実施できるようになり、工数低減
と、検査の信頼性向上を可能にする。According to the above-described electrolytic polishing apparatus of the present invention, anyone can perform the surface polishing work of the rotor blade groove, which conventionally requires a skilled worker, which reduces man-hours and reliability of inspection. Enable improvement.
【００１３】また、電解研磨装置を可搬可能な大きさま
で小型化することも可能となる。It is also possible to reduce the size of the electrolytic polishing apparatus to a portable size.
【図１】本発明の一実施例に係る電解研磨装置の全体構
成図である。FIG. 1 is an overall configuration diagram of an electrolytic polishing apparatus according to an embodiment of the present invention.
【図２】図１の研磨ヘッドを示す正面図である。FIG. 2 is a front view showing the polishing head of FIG.
【図３】図１の研磨ヘッドを示す横断面図である。FIG. 3 is a cross-sectional view showing the polishing head of FIG.
【図４】従来の研磨作業方法を示す状況図である。FIG. 4 is a situation diagram showing a conventional polishing operation method.
１ａ タービンロータ １ｂ ロータ翼溝 ２ 研磨ヘッド ３ ホルダー ４ チャンバー ５ ピン ６ ノブ（押圧手段） ７ シール ８ 研磨口 ９ 管路 １０ 電極 １５ 液循環ホース １６ 電解液循環ユニット １７ 電源ケーブル １８ 電源 1a Turbine rotor 1b Rotor blade groove 2 Polishing head 3 Holder 4 Chamber 5 Pin 6 Knob (pressing means) 7 Seal 8 Polishing port 9 Pipe line 10 Electrode 15 Liquid circulation hose 16 Electrolyte circulation unit 17 Power supply cable 18 Power supply
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6012174AJP3040650B2 (en) | 1994-01-10 | 1994-01-10 | Electropolishing equipment |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6012174AJP3040650B2 (en) | 1994-01-10 | 1994-01-10 | Electropolishing equipment |
| Publication Number | Publication Date |
|---|---|
| JPH07204935Atrue JPH07204935A (en) | 1995-08-08 |
| JP3040650B2 JP3040650B2 (en) | 2000-05-15 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6012174AExpired - Fee RelatedJP3040650B2 (en) | 1994-01-10 | 1994-01-10 | Electropolishing equipment |
| Country | Link |
|---|---|
| JP (1) | JP3040650B2 (en) |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) | Free format text:JAPANESE INTERMEDIATE CODE: A01 Effective date:20000201 | |
| LAPS | Cancellation because of no payment of annual fees |