JPS6048217A - Electrolytic and mechanical combined grinding method - Google Patents
Electrolytic and mechanical combined grinding methodInfo
- Publication number
- JPS6048217A JPS6048217A JP58154643A JP15464383A JPS6048217A JP S6048217 A JPS6048217 A JP S6048217A JP 58154643 A JP58154643 A JP 58154643A JP 15464383 A JP15464383 A JP 15464383A JP S6048217 A JPS6048217 A JP S6048217A
- Authority
- JP
- Japan
- Prior art keywords
- dovetail groove
- electrode
- electrolytic
- electrode tool
- cross
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H5/00—Combined machining
- B23H5/06—Electrochemical machining combined with mechanical working, e.g. grinding or honing
- B23H5/08—Electrolytic grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、電解作用による金属溶出除去作用と砥粒擦
過作用とを複合して研摩する電解複合研摩方法に関し、
あり溝を低コストで１μｍＲｍａｘ以下に仕上げること
を目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrolytic composite polishing method for polishing by combining metal elution removal action and abrasive grain abrasion action by electrolytic action,
The purpose is to finish dovetail grooves with Rmax of 1 μm or less at low cost.
一般に、切削により加工された金属工作物のあり溝には
、バイト目が残り、そのバイト目を仕上げる方法として
従来研削、ラッピング、パフ研摩などのいわゆる機械的
な研摩方法が行なわれている。しかし、あり溝寸法が小
さい場合や長尺寸法に対しては、いずれも作業能率が悪
く、あり溝の仕上げあらさも３μｍ Ｒｍａｘ程度であ
り、特に高度のあり溝仕上げが要求される場合でも、工
業的には１μｍＲｍ ａ ｘ程度が限界とされている。Generally, bite marks remain in the dovetail grooves of metal workpieces processed by cutting, and so-called mechanical polishing methods such as grinding, lapping, and puff polishing are conventionally used to finish the bite marks. However, when the dovetail groove size is small or long, the work efficiency is poor, and the finish roughness of the dovetail groove is about 3 μm Rmax, so even when a particularly high degree of dovetail groove finishing is required, it is difficult to perform in the industrial field. Specifically, the limit is about 1 μmRmax.
一方、最近では、食品、薬品、化学プラントはもちろん
、原子力関連機器などに要求される密閉シール機構に０
リングが使用され、この場合にはあり溝加工が不可欠で
ある。したがって、機器の信頼性、安全性の向」二は、
０リング材の雷同」二とともに、あり溝の高度な仕上げ
が必要であり、１μｍＲｍａｘ以下の仕上げが要求てれ
てきている。On the other hand, in recent years, there has been a rise in the number of airtight seals required for food, drug, and chemical plants, as well as nuclear power-related equipment.
A ring is used, in which case dovetail groove machining is essential. Therefore, the second priority for equipment reliability and safety is
Along with the 0-ring material Raidou''2, the dovetail groove requires a high level of finishing, and a finish of 1 μmRmax or less is required.
しかし、従来の機械的な研摩方法では、１μｍＢｓｔａ
％以下の仕上げが困難な上、長時間の研摩時間を要し、
コスト的にも高価なものとなっている。However, in the conventional mechanical polishing method, 1μmBsta
It is difficult to finish below %, and it takes a long time to polish.
It is also expensive in terms of cost.
また一部では、電解研摩方法も可能性があるものの、強
酸電解研摩液を必要とする上、電流密度分布の不均一さ
、電解液温管理など研摩作業性が低１＋）０
この発明は、前記のような機械研摩、電解研摩の欠点に
留意してなされたものであり、電解作用による金属溶出
除去作用と砥粒擦過作用とを覆合して研摩する電解複合
研摩方法において、電極工具を断面が金属工作物のあり
溝の断面形状に相似し前記形状よりやや小さい寸法の電
極に砥粒を含んだ研摩材を装着して構成し、前記あり溝
の仕上面に対する前記研摩材の押付圧を０．２に９ｆ／
ｃｒＡ以上とし、前記電極工具と前記金属工作物とを相
対的に３ｍ／ｍｉｎ以」−の速度で移動させることを特
徴とする電解複合研摩方法を提供するものである。In some cases, electrolytic polishing is also a possibility, but it requires a strong acid electrolytic polishing solution and has poor polishing workability such as uneven current density distribution and electrolyte temperature control1+)0 This invention This method was developed with the above-mentioned drawbacks of mechanical polishing and electrolytic polishing in mind, and in the electrolytic composite polishing method, which combines the metal elution removal action by electrolytic action and the abrasive grain abrasion action, an electrode tool is used. An abrasive material containing abrasive grains is attached to an electrode having a cross-sectional shape similar to the cross-sectional shape of a dovetail groove of a metal workpiece and slightly smaller than the shape, and the pressing pressure of the abrasive material against the finished surface of the dovetail groove. to 0.2 to 9f/
The present invention provides an electrolytic composite polishing method characterized in that the electrode tool and the metal workpiece are relatively moved at a speed of 3 m/min or more.
したがって、この発明によると、あり溝を低コストで１
μｍＲｍａｒ以下に仕上げることができる。Therefore, according to this invention, one dovetail groove can be formed at low cost.
It can be finished to below μmRmar.
つぎにこの発明を、その１実施例を示した図面とともに
詳細に説明する。Next, the present invention will be explained in detail with reference to drawings showing one embodiment thereof.
第１図において、ｉｌｌは血流電源の陽極に接続された
金属工作物、＋２１は工作物（１）に加工されたあり溝
であり、このあり溝１２＋は通常のように切削加工され
たものであり、バイト目などによる面あらさは６〜１２
５である。（３）は直流電源の陰極に接続された電極で
あり、断面があり溝（２１の断面形状に相似１７、かつ
あり溝（２）の断面形状よりやや小さい寸法になってい
る。（４）は電極（３）のあり溝（２）の仕−１−面に
対向する面に形成された複数個の電解液（５）の噴出孔
、（６）は電極（３）の外周面および底面全面、すなわ
ちあり溝（２）の仕上面に対向する面に装着され砥粒を
含んだ不織布などの通水性、絶縁性および柔軟性を有す
る研摩材、（７）は電極（３）の支持部（８）の外面に
形成された絶縁体であり、洩れ電流による酸化膜形成あ
るいはピット発生などを抑制する。（９）は絶縁体（７
）の外面に研摩材（６）に連続して形成された研摩材で
ある。な２電解液（５）は中性塩の水溶液であり、たと
えばＮａ ＮＯ３，ＫＮＯ３，ＮａＣ１などが利用され
る。１
の加工面に到達させ、工作物ｉ１１と′Ｎ極（３）間に
血流電源を印加し、電極工Ｊｌ−を一方向または往復動
させ、あり溝（２）を仕上げる。あるいは工作物（１）
を一方向または往待動させてもよい。In Fig. 1, ill is a metal workpiece connected to the anode of the blood flow power source, +21 is a dovetail groove machined in the workpiece (1), and this dovetail groove 12+ is the one cut in the usual way. The surface roughness due to bite marks etc. is 6 to 12.
It is 5. (3) is an electrode connected to the cathode of the DC power supply, and has a cross-section with a groove (21) similar in cross-sectional shape to the cross-sectional shape of (17) and slightly smaller than the cross-sectional shape of the dovetail groove (2). (4) (6) is the outer peripheral surface and bottom surface of the electrode (3). An abrasive material having water permeability, insulation and flexibility, such as a nonwoven fabric containing abrasive grains, is attached to the entire surface, that is, the surface opposite to the finished surface of the dovetail groove (2), and (7) is the support part of the electrode (3). (9) is an insulator formed on the outer surface of the insulator (7) to suppress the formation of an oxide film or the generation of pits due to leakage current.
) is an abrasive material formed continuously with the abrasive material (6) on the outer surface of the abrasive material (6). The electrolytic solution (5) is an aqueous solution of a neutral salt, for example, NaNO3, KNO3, NaCl, etc. are used. 1, a blood flow power source is applied between the workpiece i11 and the 'N pole (3), and the electrode machine Jl- is moved in one direction or reciprocally to finish the dovetail groove (2). Or workpiece (1)
may be moved in one direction or in both directions.
つぎにこの発明の加工例を第２図とともに説明する。Next, a processing example of the present invention will be explained with reference to FIG.
金属工作物の５ＵＳ３０４材に形成されたあり溝は、」
二部の寸法２０陥、底の長さ５００諭、深さ１７．５＋
ａ。The dovetail groove formed in the 5US304 material of the metal workpiece is
Dimensions of the second part: 20 cm, bottom length: 500 cm, depth: 17.5 +
a.
２１°の傾角を持つ等角の側面の形状で、その下地面あ
らさは６〜１０μｍ７１Ｒｍ、ｘであり、電極工具は、
電極面とあり溝仕上面の間隙が一定となるようその寸法
を決め、その間隙は、研摩材押付圧が０．２ ｋｇｆ、
ｋｒｌ Ｄｌ、 Ｊ：になる寸法に選ぶ。なお、研摩材
押付圧が０．２ ｋ（ｌ ｆ／ ｃｒｌり下の場合は、
電解作用が主になり電解ピットが発生し、仕上面が劣化
す。The shape of the side surface is equiangular with an inclination angle of 21°, the roughness of the base surface is 6 to 10 μm71Rm, x, and the electrode tool is
The dimensions are determined so that the gap between the electrode surface and the dovetail groove finished surface is constant, and the abrasive pressing pressure is 0.2 kgf,
krl Dl, J: Select the dimensions. In addition, if the abrasive pressing pressure is less than 0.2 k (l f/ crl),
Electrolytic action is the main cause, causing electrolytic pits and deteriorating the finished surface.
第２図はす２４０研摩材を用いた場合の電極工具と工作
物の相対移動速度■を変え、加工面あらさＲｓを調べた
ものであり、同図より明らかなように、相対移動速度Ｖ
が小さい領域では、洩れ電流による電解ピットの発生に
より仕上面の向上は望めなく、少くとも３ ｍｌｍｌｎ
以上の相対移動速度が必要である。Figure 2 examines the machined surface roughness Rs by changing the relative moving speed (■) between the electrode tool and the workpiece when using 240 abrasive material.As is clear from the figure, the relative moving speed V
In areas where the amount of water is small, no improvement in surface finish can be expected due to the generation of electrolytic pits due to leakage current, and at least 3mlmln
A relative movement speed higher than that is required.
また第３図は、電極工具のあり溝方向の長さ）を変え、
加工時間Ｅと加工面あらさＲｓの関係を示したものであ
り、同図より明らかなように、同一仕上面への到達時間
は、電極工具の長さ１が大きいほど小さくなり、３μｍ
Ｋｍａχ前後の仕」二面の場合、ノー２５癲ではｉ ＝
２ ｍｉｎに対し、ｊ！＝５０＋ｍｉではＩ ””
１ ｍｉ ｎである。また、仕上面の到達あらさはす２
４０砥粒粒度では１μｍ Ｒｍａ ｒであるが、たとえ
ば第３図に示すように、ナ６００砥粒粒度による仕」二
工程を入れることにより、到達あらさは容易に１μｍＲ
ｍａ ｘ以下の仕上面を得るとともに、加工時間【を格
段に短縮することが可能となる。また、前記加工例では
、それぞれの加工電流密度は１０’／ｃｒ／ｌ。Figure 3 also shows that by changing the length of the electrode tool in the dovetail direction,
This figure shows the relationship between the machining time E and the machined surface roughness Rs, and as is clear from the figure, the longer the length 1 of the electrode tool is, the shorter the time required to reach the same finished surface is 3 μm.
In the case of two sides, i =
For 2 min, j! =50+mi is I ””
It is 1 min. Also, the final roughness of the finished surface is 2.
40 abrasive grain size is 1 μm Rmar, but as shown in Fig. 3, by adding two steps of polishing with 600 abrasive grain size, the final roughness can be easily reduced to 1 μm R.
It becomes possible to obtain a finished surface of max or less and to significantly shorten the machining time. Further, in the processing example described above, each processing current density was 10'/cr/l.
２ Ａ ／ｃｒｌの条件である。The condition is 2A/crl.
なお、あり溝の両端部が閉じている場合には、電極工具
を半割りにしてあり溝内で組み立てればよい。またあり
溝寸法が小さい場合は片面電極工具により片面づつ仕上
げるかも１−＜は２個の片面電極工具を用いて両面同時
に仕上げることもできるＯ
したがって、断面があり溝の断面形状に相似しやや小さ
い寸法の電極に砥粒を含んだ研摩材を装着した電極下Ｈ
１により、あり溝の仕上面に対する研摩４′Ａ押付圧を
０．２ ｋｇ ｆ／ｃｌ以」−とし、３ ｒｎ／ｍ ｒ
ｎ以上の電極下柱と工作物との相対移動速度を与える
ことにより、短期間で仕」二げることか可能となり、砥
粒粒度の選定によりあり溝を１μＦＭＲｍａ ｘ以下に
効率よく仕」二けることが可能となる。Note that if both ends of the dovetail groove are closed, the electrode tool may be cut in half and assembled within the dovetail groove. Also, if the dovetail groove dimensions are small, it may be possible to finish one side at a time using a single-sided electrode tool.For 1-<, both sides can be finished at the same time using two single-sided electrode tools.O Therefore, there is a cross section, which resembles the cross-sectional shape of the groove and is slightly smaller. Lower electrode H with abrasive material containing abrasive particles attached to the electrode of the same size
According to 1, the pressing pressure of polishing 4'A on the finished surface of the dovetail groove is set to 0.2 kg f/cl or more, and 3 rn/m r
By providing a relative movement speed between the lower electrode column and the workpiece of n or more, it is possible to finish the work in a short period of time, and by selecting the abrasive grain size, it is possible to efficiently finish the dovetail groove to less than 1μFMRmax. It becomes possible to
また、電極下１］、の精度も１／１０ｍｍあれば十分で
あり、一般工作機械はもちろん手持ち式１具にもこの発
明を適用できる。Furthermore, it is sufficient that the accuracy of the lower electrode 1 is 1/10 mm, and the present invention can be applied not only to general machine tools but also to hand-held tools.
と加工面あらさの関係図、第３図は加工時間と加工面あ
らさの関係図である。
（１）・・・金属工作物、（２１・・・あり溝、（３）
・・・電極、（４）・・・噴出孔、（５）・・・電解液
、（６）・・・研摩材。
代理人 弁理士 藤 １）細太部
（７）Figure 3 is a diagram showing the relationship between machining time and machined surface roughness. (1)...Metal workpiece, (21...Dovetail groove, (3)
...Electrode, (4)...Blowout hole, (5)...Electrolyte, (6)...Abrasive material. Agent Patent Attorney Fuji 1) Hosoabe (7)
Claims (1)
とを複合して研摩する電解複合研摩方法において、電極
工具を断面が金属工作物のあり溝の断面形状に相似し前
記形状よりやや小さい寸法の電極に砥粒を含んだ研摩材
を装着して構成し、前記あり溝の仕上面に対する前記研
摩材の押付圧を０、２ ｋｇｆ／ｃｒ１以上とし、前記
電極工具と前記金属工作 物とを相対的に３ｍ／ｍｉｎ
以上の速度で移動させることを特徴とする電解複合研摩
方法。■ In the electrolytic composite polishing method, which combines the metal elution and removal action by electrolytic action and the abrasive grain abrasion action, the electrode tool has a cross-sectional shape similar to the cross-sectional shape of the dovetail groove of the metal workpiece, and a size slightly smaller than the above-mentioned shape. an abrasive material containing abrasive grains is attached to an electrode, the pressing pressure of the abrasive material against the finished surface of the dovetail groove is 0.2 kgf/cr1 or more, and the electrode tool and the metal workpiece are connected to each other. 3m/min relatively
An electrolytic composite polishing method characterized by moving at a speed higher than or equal to the above speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58154643A JPS6048217A (en) | 1983-08-23 | 1983-08-23 | Electrolytic and mechanical combined grinding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58154643A JPS6048217A (en) | 1983-08-23 | 1983-08-23 | Electrolytic and mechanical combined grinding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6048217A true JPS6048217A (en) | 1985-03-15 |
Family
ID=15588698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58154643A Pending JPS6048217A (en) | 1983-08-23 | 1983-08-23 | Electrolytic and mechanical combined grinding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6048217A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5142109A (en) * | 1974-10-04 | 1976-04-09 | Furukawa Kogyo Kk | FUNSHASUIHONPU |
| JPS54124205U (en) * | 1978-02-21 | 1979-08-30 | ||
| JPS5738222A (en) * | 1980-08-13 | 1982-03-02 | Takuo Mochizuki | Flow delivering apparatus using jet flow |
-
1983
- 1983-08-23 JP JP58154643A patent/JPS6048217A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5142109A (en) * | 1974-10-04 | 1976-04-09 | Furukawa Kogyo Kk | FUNSHASUIHONPU |
| JPS54124205U (en) * | 1978-02-21 | 1979-08-30 | ||
| JPS5738222A (en) * | 1980-08-13 | 1982-03-02 | Takuo Mochizuki | Flow delivering apparatus using jet flow |
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