JPH0530920B2 - - Google Patents
Info
- Publication number
- JPH0530920B2 JPH0530920B2 JP20297584A JP20297584A JPH0530920B2 JP H0530920 B2 JPH0530920 B2 JP H0530920B2 JP 20297584 A JP20297584 A JP 20297584A JP 20297584 A JP20297584 A JP 20297584A JP H0530920 B2 JPH0530920 B2 JP H0530920B2
- Authority
- JP
- Japan
- Prior art keywords
- jig
- drum
- shaft member
- attached
- tip
- 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.)
- Expired - Lifetime
Links
- 230000007246 mechanism Effects 0.000 claims description 17
- 238000007743 anodising Methods 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/06—Suspending or supporting devices for articles to be coated
- C25D17/08—Supporting racks, i.e. not for suspending
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Photoreceptors In Electrophotography (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、アルミ製ドラムの表面を陽極酸化処
理するための治具に関するもので、より詳細に
は、ドラムの真円度を損うことなしに一様な処理
が可能で、しかも着脱操作も容易になし得る治具
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a jig for anodizing the surface of an aluminum drum. The present invention relates to a jig that can perform uniform processing and can be easily attached and detached.
従来の技術及び発明の技術的課題
商業的な電子写真複写機においては、アルミ製
ドラム表面に有機又は無機の光導電体層を設けた
ものが感光体として使用されている。光導電体層
のドラム表面への密着性を向上させ、また光導電
体層の放電破壊等を防止する目的で、金属アルミ
表面に一定範囲の厚みの陽極酸化処理層（Al2O3
層）を形成させるこが望ましいことが知られてお
り、実際にも行われている。Prior Art and Technical Problems of the Invention In commercial electrophotographic copying machines, an aluminum drum with an organic or inorganic photoconductor layer provided on the surface is used as a photoreceptor. An anodized layer (Al 2 O 3
It is known that it is desirable to form a layer) and is actually practiced.
陽極酸化処理では、アルミ酸ドラムを陽極とし
てシユウ酸、硫酸、クロム酸等の酸水溶液中に浸
漬し、通電することにより酸化膜の形成を行う。
従来アルミ製ドラムを支持し且つこれに通電を行
うための治具としては、金属チタン等の耐腐食性
金属で形成されたＵ字型の部材をドラム内に挿入
し、バネの力でこの部材をドラム内表面に対して
圧接するようにした構造のものが広く使用されて
いた。 In the anodizing process, an oxide film is formed by immersing an aluminum acid drum as an anode in an aqueous solution of an acid such as oxalic acid, sulfuric acid, or chromic acid, and applying electricity.
Conventionally, as a jig for supporting an aluminum drum and energizing it, a U-shaped member made of a corrosion-resistant metal such as titanium is inserted into the drum, and this member is energized by the force of a spring. A structure in which the drum was pressed against the inner surface of the drum was widely used.
しかしながら、陽極酸化処理の場合、形成され
る処理膜が電気絶縁性であることから、処理中に
治具の接点がずれると、電流が流れにくくなり、
そのため、形成されるAl2O3膜の厚みにバラツキ
を生じやすくなる。これを防止するために、通常
治具を強い力で被処理物に圧接する手段がとられ
ているが、これに伴なつて、次の欠点を生じる。 However, in the case of anodic oxidation treatment, the formed treatment film is electrically insulating, so if the contacts of the jig shift during the treatment, it will be difficult for the current to flow.
Therefore, variations in the thickness of the Al 2 O 3 film formed tend to occur. In order to prevent this, a method is usually taken to press the jig against the workpiece with a strong force, but this brings about the following drawbacks.
即ち、複写機用ドラムの場合、ドラムの真円度
が画質の点で重要なフアクターとなつている。し
かして、上記の如くドラムの内側より強く圧接し
た場合にはドラムの真円度に大きな狂いを生じ
る。近年、複写機用ドラムを薄肉化、軽量化する
傾向があるので、この問題は大きな欠点といえ
る。 That is, in the case of drums for copying machines, the roundness of the drum is an important factor in terms of image quality. However, if the drum is strongly pressed from the inside as described above, the roundness of the drum will be greatly distorted. In recent years, there has been a trend to make drums for copying machines thinner and lighter, so this problem can be said to be a major drawback.
また、バネの力を利用しているため、ワンタツ
チで着脱できないという不便さがあり、そのため
処理後のドラム表面に作業者が手を触れるおそれ
がある。 Furthermore, since it uses the force of a spring, it is inconvenient that it cannot be attached or detached with a single touch, and there is a risk that an operator may touch the surface of the drum after processing.
更に、着脱操作をロボツト化することが困難で
あり、作業性が低い。 Furthermore, it is difficult to robotize the attachment/detachment operation, resulting in low workability.
発明の目的
従つて、本発明の目的は、従来の治具における
上記欠点が解消されたドラムの陽極酸化処理治具
を提供するにある。OBJECTS OF THE INVENTION Accordingly, it is an object of the present invention to provide a drum anodizing jig that eliminates the above-mentioned drawbacks of conventional jigs.
本発明の他の目的は、アルミ製ドラムの真円度
を狂わすことなしに、しかも一様な陽極酸化処理
を可能とする治具を提供することにある。 Another object of the present invention is to provide a jig that enables uniform anodizing treatment without disturbing the roundness of an aluminum drum.
本発明の他の目的は、アルミ製ドラムの着脱操
作も簡便に且つ容易に行い得る陽極酸化処理用治
具を提供するにある。 Another object of the present invention is to provide a jig for anodizing treatment that allows the attachment and detachment of an aluminum drum to be performed simply and easily.
発明の構成
本発明によれば、アルミ製ドラムを陽極酸化処
理するための治具であつて、ドラムの一方の側面
からドラム軸方向に挿入される耐腐食性の軸部材
と軸部材に取付けられ、ドラムの一方の周状端縁
と複数の位置で係合される耐腐食性のバネ部材と
の治具の対から成り、害軸部材の対の各々の先端
にはバネ部材がドラムの周状態縁に圧接される状
態で着脱自在に相互に係合する係合機構が設けら
れていることを特徴とする陽極酸化処理治具が提
供される。Structure of the Invention According to the present invention, there is provided a jig for anodizing an aluminum drum, which includes a corrosion-resistant shaft member inserted in the axial direction of the drum from one side of the drum, and a jig attached to the shaft member. , consists of a pair of jigs with corrosion-resistant spring members that are engaged with one circumferential edge of the drum at a plurality of positions, and a spring member is attached to the tip of each pair of shaft members. An anodizing treatment jig is provided, which is characterized in that it is provided with an engagement mechanism that removably engages with each other while being pressed against the state edge.
本発明によれば更に、前記係合機構は、電源接
続側の軸部材の先端に取付られた固定磁石と、他
方の軸部材の先端に回転可能に取付けられた回転
型磁石とから成り、対向する磁極を異極性とする
ことにより、治具の圧接を行い且つ対向する磁極
を同極性とすることにより治具の脱離を行うこと
を特徴とする治具が提供される。 Further, according to the present invention, the engagement mechanism includes a fixed magnet attached to the tip of the shaft member on the power connection side and a rotary magnet rotatably attached to the tip of the other shaft member, and The present invention provides a jig characterized in that the jig is press-contacted by making the magnetic poles opposite to each other have different polarities, and the jig is removed by making the opposing magnetic poles the same polarity.
発明の好適態様
本発明を、添付図面に示す具体例に基づき以下
に詳細に説明する。PREFERRED EMBODIMENTS OF THE INVENTION The present invention will be described in detail below based on specific examples shown in the accompanying drawings.
本発明の治具の一例を示す第１図及び第２図に
おいて、一対の治具１及び２から成る。一方の治
具１はドラム３の一方の側面側へ取付けるための
ものであり、且つ電源（図示せず）に接続される
ものである。他方の治具２はドラム３の他方の側
面側へ取付けるためのものである。 In FIGS. 1 and 2 showing an example of the jig of the present invention, it consists of a pair of jigs 1 and 2. One jig 1 is for attaching to one side of the drum 3, and is connected to a power source (not shown). The other jig 2 is for attaching to the other side of the drum 3.
治具１は、金属チタンのような耐腐食性金属か
ら成り且つドラム側面からドラム軸方向に挿入さ
れる軸部材４と、やはり金属チタンのような耐腐
食性金属から成り、ドラム３の一方の周状態縁５
と複数の位置で係合されるバネ部材６ａ，６ｂ，
６ｃ，６ｄから成つている。第２図の斜視図に示
す通り、これらのバネ部材は、軸部材４を中心と
し、互いに等角度で径方向に延びている。また、
第１図の側断面に示す通り、各バネ部材６ａ等
は、軸部材４への取付部７においてはほぼ垂直
で、ドラム端縁との係合部８においてはほぼ水平
となるように、下に凸の単調曲線の形状をなして
いる。第１乃至２図に示す具体例では、バネ部材
６ａ…は全部で４本設けられているが、バネ部材
の巾が大きい場合には２本でもよいが、一般には
３乃至６本の本数とすることが望ましい。 The jig 1 consists of a shaft member 4 made of a corrosion-resistant metal such as titanium metal and inserted in the axial direction of the drum from the side of the drum, and a shaft member 4 made of a corrosion-resistant metal such as titanium metal and attached to one side of the drum 3. Circumferential edge 5
Spring members 6a, 6b, which are engaged at a plurality of positions with
It consists of 6c and 6d. As shown in the perspective view of FIG. 2, these spring members extend radially at equal angles to each other with the shaft member 4 as the center. Also,
As shown in the side cross section of FIG. 1, each spring member 6a, etc. is attached downwardly so that the attachment portion 7 to the shaft member 4 is approximately vertical, and the engaging portion 8 with the drum edge is approximately horizontal. It has the shape of a convex monotonous curve. In the specific example shown in FIGS. 1 and 2, a total of four spring members 6a are provided, but if the width of the spring member is large, two may be used, but generally there are three to six spring members. It is desirable to do so.
他方の治具２も、治具１と同様に軸部材９及び
バネ部材１０ａ，１０ｂ，１０ｃ，１０ｄから成
つており、しかも治具１とほぼ対称に形成された
且つ軸部材９がドラムの他方の側面から軸方向に
挿入され、バネ部材１０ａ……がドラム３の他方
の周状端縁１１と複数の位置で係合されるように
設けられている。只、電源接続側治具の軸部材４
は、電解処理駅への浸漬と電気的接続とのために
比較的長く、一方他方の治具２の軸部材９は比較
的短い点で両者は相違している。 The other jig 2 also consists of a shaft member 9 and spring members 10a, 10b, 10c, and 10d like the jig 1, and is formed almost symmetrically with the jig 1, and the shaft member 9 is attached to the other side of the drum. is inserted in the axial direction from the side surface of the drum 3, and the spring members 10a are provided so as to be engaged with the other circumferential edge 11 of the drum 3 at a plurality of positions. However, the shaft member 4 of the power connection side jig
The two differ in that the jig 2 is relatively long for immersion into the electrolytic treatment station and the electrical connection, whereas the shaft member 9 of the other jig 2 is relatively short.
軸部材４の挿入先端１２には係合機構１３がま
た軸部材９の挿入先端１４には係合機構１５が
夫々設けられる。係合機構１３及び１５と、各軸
部材及びバネ部材との関係は、各治具のバネ部材
６ａ……（１０ａ……）がドラム３の周状端縁
５，（１１）に圧接される状態で、軸部材の先端
１２及び１４同志が係合するような関係にある。 An engagement mechanism 13 is provided at the insertion tip 12 of the shaft member 4, and an engagement mechanism 15 is provided at the insertion tip 14 of the shaft member 9, respectively. The relationship between the engagement mechanisms 13 and 15 and each shaft member and spring member is such that the spring members 6a... (10a...) of each jig are pressed against the circumferential edges 5, (11) of the drum 3. In this state, the ends 12 and 14 of the shaft members are in a relationship such that they engage with each other.
これらの係合機構１３及び１５は、機械的な係
合機構でもよく、また磁石または電磁石のような
係合機構でよい。 These engagement mechanisms 13 and 15 may be mechanical engagement mechanisms, or may be engagement mechanisms such as magnets or electromagnets.
例えば、機械的な係合機構の一例を示す第３図
において、各係合機構１３，（１５）は、約180°
の角度で設けられた最低段差部１６、約60°の角
度で設けられた中間段差部１７、約120°の角度で
設けられた上段部１８が周方向にこの順序で設け
られ、且つ上段部１８の下方には、最低段差部１
６の面を上段部１８側60度延長した形で切欠部１
９が設けられている。 For example, in FIG. 3 showing an example of a mechanical engagement mechanism, each engagement mechanism 13, (15) has an angle of about 180°.
The lowest step part 16 provided at an angle of , the intermediate step part 17 provided at an angle of about 60 degrees, and the upper step part 18 provided at an angle of about 120 degrees are provided in this order in the circumferential direction, and the upper step part 18, the lowest step part 1
Notch 1 is formed by extending the surface of 6 by 60 degrees on the upper part 18 side.
9 is provided.
かくして、一方の軸部材先端１２の上段部１８
と他方の軸部材先端１４の最低段差部１６とを係
合させ、次いで他方の軸部材９を約60度回転させ
ることにより、両方の軸部材の上段部１８と切欠
部１９とが噛み合つて、両軸部材４，９の先端で
の係合が可能となる。勿論、他方の軸部材９を反
対方向に約60度回転させることにより、両者の係
合解除が可能となる。 Thus, the upper step 18 of the tip 12 of one shaft member
By engaging the lowest step portion 16 of the other shaft member tip 14 and then rotating the other shaft member 9 by about 60 degrees, the upper step portion 18 of both shaft members and the notch portion 19 are engaged with each other. , it becomes possible to engage the ends of both shaft members 4 and 9. Of course, by rotating the other shaft member 9 approximately 60 degrees in the opposite direction, the engagement between the two can be released.
尚、第１図に示す通り、他方の軸部材９におい
て、係合機構１５と反対側の端部には軸部材９を
回動させるための回動用つまみ２０を設けておく
ことができる。 As shown in FIG. 1, a rotation knob 20 for rotating the shaft member 9 can be provided at the end of the other shaft member 9 opposite to the engagement mechanism 15.
係合機構１３及び１５は電磁石であつてもよ
く、この場合には電磁石を励磁して軸部材先端同
志の係合を行い、電磁石への通電を断にして係合
解除を行う。 The engagement mechanisms 13 and 15 may be electromagnets, and in this case, the electromagnets are energized to engage the ends of the shaft members, and the engagement is released by cutting off the power to the electromagnets.
本発明の目的に特に好適に使用される係合機構
１３及び１５を示す第４図、第５−Ａ図及び第５
−Ｂ図において、電源接続側の軸部材４は、端部
２１が閉じられているチタン製パイプであり、こ
のパイプの端部に磁石２２が固定されている。他
方の軸部材９も端部２３が閉じているチタン製パ
イプから成つており、その端部には磁石２４がつ
まみ２０及びシヤフト２５を介して回転し得るよ
うに設けられている。 4, 5-A and 5 showing engagement mechanisms 13 and 15 particularly preferably used for the purpose of the present invention.
In Figure -B, the shaft member 4 on the power supply connection side is a titanium pipe with a closed end 21, and a magnet 22 is fixed to the end of this pipe. The other shaft member 9 also consists of a titanium pipe with a closed end 23, at which a magnet 24 is mounted so as to be rotatable via a knob 20 and a shaft 25.
治具の圧接状態を示す第５−Ａ図において、固
定磁石２２と回転可能磁石２４との対向する磁極
を互いに異極性とすることにより、磁力による吸
引係合が可能となる。また治具の脱離状態を示す
第５−Ｂ図において、固定磁石２２と回転可能磁
石２４との対向する磁極を互いに同極性となるよ
うに磁石２４を回動させることにより、反撥磁界
によつて、軸部材先端相互の離脱が可能となる。 In FIG. 5-A showing the press-contact state of the jig, by making the opposing magnetic poles of the fixed magnet 22 and the rotatable magnet 24 have different polarities, attractive engagement by magnetic force is possible. In addition, in FIG. 5-B showing the detached state of the jig, by rotating the magnet 24 so that the opposing magnetic poles of the fixed magnet 22 and the rotatable magnet 24 have the same polarity, the repulsive magnetic field is generated. As a result, the ends of the shaft members can be separated from each other.
発明の作用効果
本発明によれば、以上説明した通り、ドラムの
軸方向に挿入される軸部材と、ドラムの周状端縁
と係合するバネ部材とから成る治具の対を使用
し、バネ部材がドラムの周状端縁に圧接される状
態で軸部材先端同志の係合を行わせることによ
り、ドラム表面の真円度に変化を与えることなく
安定した通電状態が維持される。しかも、治具の
ドラムへの着脱もワンタツチで容易に行い得る
等、作業上多くの利点を有する。Effects of the Invention According to the present invention, as explained above, a pair of jigs including a shaft member inserted in the axial direction of the drum and a spring member engaged with the circumferential edge of the drum are used, By engaging the tips of the shaft members with each other while the spring member is in pressure contact with the circumferential edge of the drum, a stable energized state is maintained without changing the roundness of the drum surface. Moreover, it has many advantages in terms of work, such as the ability to easily attach and detach the jig to and from the drum with a single touch.
第１図は本発明の治具の配置を示す側断面図で
あり、第２図は第１図の治具の斜視図であり、第
３図は機械的係合機構の一例を示す斜視図であ
り、第４図は磁気的係合機構の一例を示す側断面
図であり、第５−Ａ図は係合圧接時の磁石の状態
の説明図であり、第５−Ｂ図は離脱時の磁石の状
態の説明図である。
FIG. 1 is a side sectional view showing the arrangement of the jig of the present invention, FIG. 2 is a perspective view of the jig shown in FIG. 1, and FIG. 3 is a perspective view showing an example of the mechanical engagement mechanism. FIG. 4 is a side sectional view showing an example of the magnetic engagement mechanism, FIG. 5-A is an explanatory diagram of the state of the magnet during engagement and pressure welding, and FIG. FIG. 2 is an explanatory diagram of the state of the magnet.
Claims (1)
具であつて、ドラムの一方の側面からドラム軸方
向に挿入される耐腐食性の軸部材と軸部材に取付
けられドラムの一方の周状端縁と複数の位置で係
合される耐腐食性のバネ部材との治具の対から成
り、該軸部材の対の各々の先端にはバネ部材がド
ラムの周状端縁に圧接される状態で着脱自在に相
互に係合する係合機構が設けられていることを特
徴とする陽極酸化処理用治具。 ２ 係合機構は、電源接続側の軸部材の先端に取
付けられた固定磁石と、他方の軸部材の先端に回
転可能に取付けられた回転型磁石とから成り、対
向する磁極を異極性とすることにより、治具の圧
接を行い且つ対向する磁極を同極性とすることに
より治具の脱離を行うことを特徴とする特許請求
の範囲第１項記載の治具。[Scope of Claims] 1. A jig for anodizing an aluminum drum, which includes a corrosion-resistant shaft member inserted from one side of the drum in the axial direction of the drum, and a jig attached to the shaft member that is attached to the shaft member of the drum. It consists of a pair of jigs with corrosion-resistant spring members that are engaged with one circumferential edge of the drum at a plurality of positions, and a spring member is attached to the tip of each pair of shaft members. 1. An anodizing treatment jig, characterized in that it is provided with an engagement mechanism that removably engages with each other while being pressed into contact with the anodizing jig. 2. The engagement mechanism consists of a fixed magnet attached to the tip of the shaft member on the power connection side and a rotary magnet rotatably attached to the tip of the other shaft member, and the opposing magnetic poles have different polarities. 2. The jig according to claim 1, wherein the jig is removed by press-welding the jig and making opposing magnetic poles of the same polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20297584A JPS6184399A (en) | 1984-09-29 | 1984-09-29 | Jig for anode-oxidation treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20297584A JPS6184399A (en) | 1984-09-29 | 1984-09-29 | Jig for anode-oxidation treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6184399A JPS6184399A (en) | 1986-04-28 |
| JPH0530920B2 true JPH0530920B2 (en) | 1993-05-11 |
Family
ID=16466253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20297584A Granted JPS6184399A (en) | 1984-09-29 | 1984-09-29 | Jig for anode-oxidation treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6184399A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4224252C1 (en) * | 1992-07-22 | 1993-12-23 | Kaspar Walter Maschf Kg | Holding device for hollow cylinder printing forms |
| CH687988A5 (en) * | 1993-05-06 | 1997-04-15 | Mdc Max Dotwyler Bleienbach Ag | Apparatus for handling hollow cylinders |
| CN105002549B (en) * | 2015-07-16 | 2017-04-19 | 南京工程学院 | Cylinder-shaped part microarc oxidation fixture and using method thereof |
-
1984
- 1984-09-29 JP JP20297584A patent/JPS6184399A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6184399A (en) | 1986-04-28 |
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