JPS63180420A - Electrolytic polishing device for inner surface of tubular work - Google Patents
Electrolytic polishing device for inner surface of tubular workInfo
- Publication number
- JPS63180420A JPS63180420A JP1326487A JP1326487A JPS63180420A JP S63180420 A JPS63180420 A JP S63180420A JP 1326487 A JP1326487 A JP 1326487A JP 1326487 A JP1326487 A JP 1326487A JP S63180420 A JPS63180420 A JP S63180420A
- Authority
- JP
- Japan
- Prior art keywords
- work
- cylindrical electrodes
- electrolytic polishing
- orderly
- workpiece
- 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.)
- Granted
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 15
- 238000003754 machining Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 5
- 239000003792 electrolyte Substances 0.000 abstract description 3
- 230000004323 axial length Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はパイプ状のワーク内面の電解研摩装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for electropolishing the inner surface of a pipe-shaped workpiece.
（従来の技術）
パイプ状のワークの内面の電解研摩を行うためには、ワ
ークの内径よりもわずかに小さい外径を持つ棒状の加工
電極をワークの内部に挿入しつつワークと加工電極との
間に直流電流を流す方法が−ａ的であった。ところがワ
ークの全長が長くなり加工電極の長さも大となると加工
電極からワークに流れる電流密度が不均一となり、仕上
りにムラが生じ易くなる欠点があった。このため全長の
大きいパイプ状のワークの内面の電解研摩を行う場合に
は加工電極を順次移動させつつ電流′を流す方法も採用
されているが、移動に手数を要するうえやはり仕上リム
ラを完全に無くすることばできなかった。(Prior art) In order to perform electrolytic polishing on the inner surface of a pipe-shaped workpiece, a rod-shaped machining electrode with an outer diameter slightly smaller than the inner diameter of the workpiece is inserted into the workpiece, and the workpiece and the machining electrode are connected to each other. The method of -a was to pass a direct current between the two. However, when the total length of the workpiece becomes longer and the length of the machining electrode also increases, the current density flowing from the machining electrode to the workpiece becomes non-uniform, resulting in a drawback that unevenness tends to occur in the finished product. For this reason, when performing electrolytic polishing on the inner surface of a pipe-shaped workpiece with a large overall length, a method is adopted in which the processing electrode is sequentially moved while passing a current '. There were no words to make it go away.
（発明が解決しようとする問題点）
本発明は上記のような従来の問題点を解決して、ワーク
の全長が長い場合にもその内面を均一に電解研摩するこ
とができるパイプ状のワーク内面の電解研摩装置を目的
として完成されたものである。(Problems to be Solved by the Invention) The present invention solves the conventional problems as described above, and provides a pipe-shaped inner surface of a workpiece that can uniformly electrolytically polish the inner surface even when the entire length of the workpiece is long. It was completed for the purpose of electrolytic polishing equipment.
（問題点を解決するための手段）
本発明はパイプ状のワークの内径よりも小さい外径を持
つ複数個の筒状電極を相互間に絶縁リングを介在させて
ワークの軸線方向に接続した加工電極と、ワークの外面
に当接される給電電極と、各筒状電極に順次パルス電流
を印加する複数のマイナス側端子を備えたパルス電源と
を備えたことを特徴とするものである。(Means for Solving the Problems) The present invention is a process in which a plurality of cylindrical electrodes having an outer diameter smaller than the inner diameter of a pipe-shaped workpiece are connected in the axial direction of the workpiece with an insulating ring interposed between them. It is characterized by comprising an electrode, a power supply electrode that comes into contact with the outer surface of the workpiece, and a pulse power source that has a plurality of negative terminals that sequentially applies pulsed current to each cylindrical electrode.
（実施例）
次に本発明を図示の実施例について詳細に説明すると、
ｉｌｌ、（２）はパイプ状のワーク（３０）の両端を支
持するための口金、（３）は先端に口金（１）の中心孔
に挿込まれるピン状突起（４）を備えた中空管であり、
この中空管（３）の周囲には複数の筒状電極（５）と絶
縁リング（６）とからなる加工電極が形成されている、
筒状電極（５）はパイプ状のワーク（３０）の内径より
もわずかに小さい外径を持つもので、ワーク（３０）の
軸線方向に複数に分割されたものである。また絶縁リン
グ（６）は各筒状電極（５）、（５）の相互間に介在し
て各筒状電極（５）を絶縁するとともに、図示の実施例
では筒状電極（５）のホルダの役割も果たしている。な
お筒状電極（５）の相互間の距離は数日を越えると電流
密度の不均一の原因となるので、数龍以内としておくも
のとする。（７）はパイプ状のワーク（３０）の外面に
当接される給電電極であり、やはりワーク（３０）の軸
線方向に複数個に分割しておくことが好ましい。(Example) Next, the present invention will be explained in detail with reference to the illustrated example.
ill, (2) is a base for supporting both ends of a pipe-shaped workpiece (30), and (3) is a hollow body with a pin-shaped protrusion (4) inserted into the center hole of the base (1) at the tip. It is a tube,
A processing electrode consisting of a plurality of cylindrical electrodes (5) and an insulating ring (6) is formed around this hollow tube (3).
The cylindrical electrode (5) has an outer diameter slightly smaller than the inner diameter of the pipe-shaped workpiece (30), and is divided into a plurality of parts in the axial direction of the workpiece (30). Further, the insulating ring (6) is interposed between the cylindrical electrodes (5), (5) to insulate each cylindrical electrode (5), and in the illustrated embodiment, serves as a holder for the cylindrical electrode (5). It also plays the role of Note that the distance between the cylindrical electrodes (5) should be within several tens of meters, since if it exceeds several days, it will cause non-uniformity of the current density. (7) is a power supply electrode that comes into contact with the outer surface of the pipe-shaped workpiece (30), and is preferably divided into a plurality of electrodes in the axial direction of the workpiece (30).
本発明においてはこれらの加工電極と給電電極（７）と
に電解研摩用の電流を供給するために、複数のマイナス
側端子（８）を備えたパルス電源（９）が用いられる。In the present invention, a pulse power source (9) equipped with a plurality of negative terminals (8) is used to supply current for electrolytic polishing to these processing electrodes and the power supply electrode (7).
パルス電源（９）は一定時間間隔で発生するパルスを内
蔵するスイッチング回路によって順次各マイナス側端子
（８）に分配する機能を有するものであり、これらの各
マイナス側端子（８）と筒状電極（５）とは図示のよう
にコード線ＯＩを介して個別に接続されている。またパ
ルス電源（９）のプラス側端子（１１）はコード線（１
２）を介して給電電極（７）と接続されている。なお口
金＋１１、（２）には図示のように電解液の出口（１３
）と人口（１４）とが形成されており、加工電極とワー
ク（３０）との間隙を電解液が流れるようになっている
。The pulse power source (9) has the function of sequentially distributing pulses generated at regular time intervals to each negative terminal (8) by a built-in switching circuit, and connects each of these negative terminals (8) and the cylindrical electrode. (5) are individually connected via cord lines OI as shown. In addition, the positive terminal (11) of the pulse power supply (9) is connected to the cord wire (1
2) is connected to the power supply electrode (7). Note that the cap +11 (2) has an electrolyte outlet (13) as shown in the figure.
) and a population (14) are formed, and the electrolytic solution flows through the gap between the processing electrode and the workpiece (30).
（作用）
このように構成されたものは、図示のように口金＋１１
、（２）間にパイプ状のワーク（３０）を固定するとと
もに筒状電極（５）と絶縁リング（６）とからなる加工
電極をワーク（３０）の内部に位置させ、更にワーク（
３０）の外面に給電電極（７）を当接させる。この状態
で図示を略した循環ポンプによって電解液を口金（２）
の入口（１４）から供給するとともに、パルス電源（９
）の各マイナス側端子（８）に順次パルス電流を発生さ
せれば、各筒状電極（５）とワーク（３０）との間で順
次電解研摩が行われ、ワーク（３０）の内面は全長にわ
たり電解研摩されることになる０本発明においてはこの
ように複数に分割された軸方向の長さの短い筒状電極（
５）によって電解研摩が行われるので、電流密度の不均
一が生ずることがな（、また各筒状電極（５）には同一
条件で順次パルス電流が印加されるのでワーク（３０）
の全長にわたって均一な仕上げ状態を得ることができる
。しかも本発明においてはパルス電源（９）により電解
研摩が行われるので電流の静止期間を利用して系の安定
化が図られることとなり、定常的に直流電流を印加する
場合に比較してより高密度の電流による効率的な電解研
摩が行えることとなる。(Function) The device configured in this way has a cap of +11 as shown in the figure.
, (2), a pipe-shaped workpiece (30) is fixed between them, and a machining electrode consisting of a cylindrical electrode (5) and an insulating ring (6) is positioned inside the workpiece (30).
A power supply electrode (7) is brought into contact with the outer surface of 30). In this state, the electrolyte is pumped into the cap (2) using a circulation pump (not shown).
The pulse power source (9) is supplied from the inlet (14) of the
), if a pulse current is sequentially generated in each negative terminal (8) of In the present invention, a cylindrical electrode with a short axial length divided into a plurality of parts (
Since electrolytic polishing is performed by step 5), non-uniformity of current density will not occur.
A uniform finish can be obtained over the entire length. Moreover, in the present invention, since electrolytic polishing is performed by a pulsed power source (9), the system can be stabilized by using the period when the current is stationary, and the polishing efficiency is higher than when a direct current is constantly applied. Efficient electrolytic polishing can be performed using a high-density current.
（発明の効果）
本発明は以上の説明からも明らかなように、軸線方向に
複数に分割された筒状電極に順次パルス電流を印加する
方式を採用することにより、全長の大きいパイプ状のワ
ークの内面をも均一に電解研摩することができるもので
あり、従来のように加工電極を移動させつつ電解研摩を
行う必要がないので加工能率を著しく向上できる利点が
ある。(Effects of the Invention) As is clear from the above description, the present invention employs a method in which pulsed current is sequentially applied to a cylindrical electrode divided into a plurality of parts in the axial direction. It is possible to uniformly electrolytically polish the inner surface of the wafer, and there is no need to perform electrolytic polishing while moving the machining electrode as in the conventional method, which has the advantage of significantly improving machining efficiency.
しかし本発明の装置を用いる場合にも、必要に応じて加
工電極をワークの長手方向に移動させることができるこ
とは言うまでもない、よって本発明は従来の問題点を解
消したパイプ状のワーク内面の電解研摩装置として、業
界に寄与するところは極めて大きいものである。However, even when using the apparatus of the present invention, it goes without saying that the processing electrode can be moved in the longitudinal direction of the workpiece as required. As a polishing device, its contribution to the industry is extremely large.
第１図は本発明の実施例を示す断面図である。
（５）：筒状電極、（６）：絶縁リング、（７）：給電
電極、＋８１ ：マイナス側端子、（９）：パルス電源
、（３ｏ）： ワーク。FIG. 1 is a sectional view showing an embodiment of the present invention. (5): Cylindrical electrode, (6): Insulating ring, (7): Power supply electrode, +81: Negative side terminal, (9): Pulse power supply, (3o): Work.
Claims (1)
つ複数個の筒状電極（５）を相互間に絶縁リング（６）
を介在させてワーク（３０）の軸線方向に接続した加工
電極と、ワーク（３０）の外面に当接される給電電極（
７）と、各筒状電極（５）に順次パルス電流を印加する
複数のマイナス側端子（８）を備えたパルス電源（９）
とを備えたことを特徴とするパイプ状のワーク内面の電
解研摩装置。A plurality of cylindrical electrodes (5) having an outer diameter smaller than the inner diameter of the pipe-shaped workpiece (30) are interposed with an insulating ring (6).
A machining electrode connected in the axial direction of the workpiece (30) with a power supply electrode (
7), and a pulse power source (9) comprising a plurality of negative side terminals (8) that sequentially apply pulsed current to each cylindrical electrode (5).
An electrolytic polishing device for the inner surface of a pipe-shaped workpiece, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62013264A JPH0761574B2 (en) | 1987-01-22 | 1987-01-22 | Electrolytic polishing device for inner surface of pipe-shaped work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62013264A JPH0761574B2 (en) | 1987-01-22 | 1987-01-22 | Electrolytic polishing device for inner surface of pipe-shaped work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63180420A true JPS63180420A (en) | 1988-07-25 |
| JPH0761574B2 JPH0761574B2 (en) | 1995-07-05 |
Family
ID=11828355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62013264A Expired - Lifetime JPH0761574B2 (en) | 1987-01-22 | 1987-01-22 | Electrolytic polishing device for inner surface of pipe-shaped work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0761574B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04304926A (en) * | 1991-03-30 | 1992-10-28 | Hitachi Zosen Corp | Electrolytic compound polishing method |
| GB2580753A (en) * | 2017-09-05 | 2020-07-29 | Rolls Royce Plc | Tool and method for processing a channel within an electrically conductive component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61236426A (en) * | 1985-04-12 | 1986-10-21 | Mitsui Eng & Shipbuild Co Ltd | Electrochemically polishing method and its device for inside metal pipe |
-
1987
- 1987-01-22 JP JP62013264A patent/JPH0761574B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61236426A (en) * | 1985-04-12 | 1986-10-21 | Mitsui Eng & Shipbuild Co Ltd | Electrochemically polishing method and its device for inside metal pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04304926A (en) * | 1991-03-30 | 1992-10-28 | Hitachi Zosen Corp | Electrolytic compound polishing method |
| GB2580753A (en) * | 2017-09-05 | 2020-07-29 | Rolls Royce Plc | Tool and method for processing a channel within an electrically conductive component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0761574B2 (en) | 1995-07-05 |
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