WO2001048270A1 - Virole metallique et procede de fabrication associe - Google Patents

Virole metallique et procede de fabrication associe Download PDF

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Publication number
WO2001048270A1
WO2001048270A1 PCT/JP2000/009268 JP0009268W WO0148270A1 WO 2001048270 A1 WO2001048270 A1 WO 2001048270A1 JP 0009268 W JP0009268 W JP 0009268W WO 0148270 A1 WO0148270 A1 WO 0148270A1
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WO
WIPO (PCT)
Prior art keywords
metal
core wire
outer diameter
ferrule
end surface
Prior art date
Application number
PCT/JP2000/009268
Other languages
English (en)
Japanese (ja)
Inventor
Tetsuo Tanaka
Yoshinari Kohno
Original Assignee
Tetsuo Tanaka
Yoshinari Kohno
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tetsuo Tanaka, Yoshinari Kohno filed Critical Tetsuo Tanaka
Priority to AU24031/01A priority Critical patent/AU2403101A/en
Publication of WO2001048270A1 publication Critical patent/WO2001048270A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/02—Tubes; Rings; Hollow bodies

Definitions

  • the present invention relates to a method for manufacturing a metal ferrule and a metal ferrule by using an electrode.
  • a ferrule is used as a connector for connecting one silica-based optical fiber. Since the optical fiber is thin and easily broken, it is necessary to securely fix the optical fiber to the connector.
  • An optical connector component for this purpose is a ferrule.
  • the optical connector 1 is designed to connect the cores at the center of the optical fiber 1 precisely by fixing the optical fiber 1 having a thickness of about 0.125 mm through a ferrule. .
  • the inner diameter of the ferrule has an inner diameter of about 0.126 mm because it is necessary to pass through the optical fiber.
  • zirconia ferrule is made of stainless steel, zirconia or plastic, of which zirconia is the mainstream.
  • zirconia powder and resin are mixed, molded into a cylindrical shape by injection molding, extrusion molding, etc., and the molded product is heated at a temperature of about 500 ° C. Then, the resin component is decomposed and removed, and then fired at a high temperature of about 1200 ° C.
  • post-processing is performed to increase the accuracy of the inner diameter, outer diameter, and coaxiality.
  • a linear diamond polishing body is polished through a hole in the center part of the cylinder. This polishing operation is performed manually, and requires accurate dimensioning. To improve the accuracy of the outer diameter, the surface must be polished.
  • processing is performed using a wire centerless machine. Even with these types of processing, the inner diameter, outer diameter, In fact, the coaxiality varies, and the actual situation is that each one is inspected and classified according to dimensions.
  • Zirconia ferrules require expensive injection molding machines, extrusion molding machines, and molds, and the molding machines and molds have a short service life. High energy costs due to high temperature treatment, and holes must be polished with a linear diamond polished body in order to obtain dimensional accuracy of the central hole. Polishing is performed by highly skilled workers. Therefore, problems such as low productivity have been pointed out.
  • the ferrule made of zirconia has a problem that it has a low impact strength and is easily broken. Ferrules require post-processing such as drilling work and dimension finishing work, but it is necessary to maintain impact strength in order to perform these works smoothly. In order to maintain the impact strength, it is necessary to increase the thickness of the ferrule.
  • the outer diameter of the ferrule is about 2.5 mm.
  • the outer diameter of about 1.25 mm is said to be the limit.
  • a method of manufacturing metal ferrules by electricity is conceivable.
  • a soft magnetic thin film is formed on a chrome core material by electric plating. This is cut into a predetermined length with a wire saw, and immersed in a chrome etching solution to etch the chrome core material to obtain a hollow cylindrical body.
  • the inner diameter of the ferrule is extremely small, about 0.126 mm, it is not easy to obtain a high-precision ferrule by the above-described electrolysis method, and the core wire in the ferrule-forming conductor is etched with an etching solution. There is a problem that it is extremely difficult to elute or remove by other methods.
  • the present invention has been made in view of the above problems in ferrule manufacturing, No equipment required, simple and inexpensive equipment, low energy cost, good dimensional stability Easy production management, no special skill of workers, therefore good workability and high productivity
  • Another object of the present invention is to provide a metal ferrule and a method for manufacturing the same, which can be manufactured extremely easily even with a ferrule having a small outer diameter. Disclosure of the invention
  • a metal film is formed on an outer surface of a metal core wire having a small outer diameter by an electrode to form a metal cylinder having a predetermined outer diameter, and the metal cylinder is cut into a predetermined length in the next step to form a cylindrical block.
  • a core wire end surface portion in one end surface of the cylindrical block is pushed with a jig, the core wire is projected from the other end surface of the cylindrical block, and the projected core wire portion is gripped and the core wire is pulled out.
  • the outer diameter of the metal core wire used in manufacturing the metal ferrule by using an electrode is 0.126 mm.
  • the metal core used for manufacturing the metal ferrule by electrode is preferably made of stainless steel or phosphor bronze.
  • the metal of the metal film formed on the outer surface of the metal core wire having a minute outer diameter by an electrode is preferably nickel or an alloy containing nickel as a main component.
  • the metal ferrule is a metal ferrule having an inner diameter of 0.125 to 0.130 mm and an outer diameter of 2.0 to 3.0 mm. 12 5 -0.130 mm, outer diameter force S 0.25 to 1.25 mm metal phenomena and inner diameter force ⁇ ) .126 to 0.128 mm, outer diameter force ⁇ .25 to 0.9 mm metal ferrule It is.
  • a metal film is formed on the outer surface of the metal core wire having a small outer diameter by an electrode to form a metal cylinder having a predetermined outer diameter, and then the metal cylinder is cut into a predetermined length to form a cylindrical block.
  • a metal ferrule manufactured using a stainless steel core wire having a diameter of 0.126 mm or a phosphor bronze core wire as the metal core wire is preferable. Further, it is preferable that these metal ferrules have an alloy force containing nickel or nickel as a main component.
  • One of the features of the present invention is a metal ferrule obtained by using an electrode, which can provide a ferrule having an outer diameter of about 2.5 mm as usual and a ferrule having a small outer diameter. .
  • it is not easy to manufacture pipes having metal pores by conventional machining.
  • a ferrule for an optical fiber is required to have strict roundness and coaxiality with an inner diameter and an outer diameter. It is not easy to manufacture metal pipes that have pores that satisfy these requirements by conventional machining.
  • the inventors of the present invention have conducted intensive research on the manufacture of ferrules by electric power, and have found that ferrules having excellent roundness and coaxiality can be efficiently manufactured by electric power, and completed the present invention. It was made.
  • ferrule manufactured by the electrode is made of metal, even if the impact strength is higher than that of ceramics and the outer diameter is 0.25 mm, sufficient strength can be maintained. With ferrules made of ceramics, when the outer diameter is less than 1.25 mm, the strength decreases, and there is a problem that the ferrule is destroyed during the processing. In this respect, metal ferrules with 0.25mm outer diameter can maintain strength.
  • a ferrule having a small outer diameter can be obtained by the method for producing a metal ferrule by using an electrode according to the present invention. Also, unlike the case of ferrules made of zirconia, the roundness and concentricity can be easily obtained, and there is no particular need to separate by inspection.
  • a metal ferrule having an outer diameter of usually about 2.0 to 3.0 Omm can be obtained and a small metal ferrule can be obtained.
  • a small ferrule Bore force SO. 125-0.130 mm, outer diameter ⁇ ).
  • 25-1.25 mm Metal phenolic can be manufactured.
  • Metal ferrules with a diameter of 128 mm and an outer diameter of 0.25 to 0.9 mm can be manufactured.
  • the core wire used for the matrix In general, aluminum or its alloy, copper or its alloy, iron or its alloy, silver, gold, or the like can be used as the material of the core wire used for the matrix.
  • a wire having a high tension is preferable, and a core wire made of stainless steel or phosphor bronze can be suitably used.
  • the outer diameter of the core wire should be about 0.126 mm, taking into account the diameter of the optical fiber, 0.125 mm. This is to ensure the dimensions necessary and sufficient for introducing the optical fiber.
  • the core wire used is a true circular one having a uniform outer diameter.
  • the metal ferrule of the present invention is obtained by applying power using a core wire of a metal or a plastic subjected to conductive treatment as a matrix. That is, after forming a metal film on the outer surface of the core wire having a small outer diameter by an electrode to form a metal cylinder having a predetermined outer diameter, and then cutting the metal cylinder into a predetermined length to form a columnar block, The end of the core wire in one end surface of the cylindrical block is pushed with a jig, the core wire is projected from the other end surface of the cylindrical block, the projected core wire portion is gripped, and the core wire is pulled out to obtain a filter. When the core wire is pulled out, a protrusion having a diameter smaller than the diameter of the core wire can be pulled out by pushing the center of the core wire and pulling the end of the core wire that appears on the opposite surface.
  • the electrode operation is performed by immersing the core wire of the mother die in an electrode solution composed of an aqueous solution of a metal salt and using the core wire as a negative electrode, while using a metal as an anode and supplying electricity during this period. Determine the type of metal that will be the anode and the content of the metal aqueous solution according to the metal of the electrical appliance.
  • an electrode metal such as nickel or an alloy thereof, iron or an alloy thereof, copper or an alloy thereof, cobalt or an alloy thereof, a tungsten alloy, and a metal in which fine particles are dispersed
  • nickel electrolytes such as nickel sulfamate, nickel chloride, nickel sulfate, ferrous sulfamate, and ferrous borofluoride
  • Liquids containing an aqueous solution of iron, pyrophosphoric acid, copper sulfate, copper borofluoride, copper copper fluoride, copper titanium fluoride, copper alkanol sulfonate, cobalt sulfate, sodium tungstate, or any of these liquids Use a liquid in which fine powders such as silicon carbide, tungsten carbide, boron carbide, zirconium oxide, silicon nitride, alumina, and diamond are dispersed.
  • the electrolyte containing nickel sulfamate as a main component can be applied to a high current density even at a low temperature where the internal stress of the electrical appliance is small, and the electrical work is easy. It has excellent physical properties such as hardness, good chemical stability, and easy maintenance of the solution, and can be suitably used.
  • the anode varies depending on the intended electrode metal, and is selected from nickel, iron, copper, cobalt, and the like, and the shape of the metal is appropriately used in a plate shape or a spherical shape. Among these, nickel or a nickel alloy can be preferably used.
  • DC current 5 or more Electricity is grown at a current density of about 10 A / dm2 for approximately one day to obtain an electrical product grown to a thickness of 2.6 mm ⁇ . By changing the power time, ferrule products with different outer diameters can be easily obtained.
  • the columnar electric product having the metal film formed on the matrix core wire is cut into a predetermined length to form a columnar block.
  • the end of the core wire in one end surface of the cylindrical block is pierced by a jig, the other end surface of the cylindrical block is forced out of the core wire, the protruded core portion is gripped, and the core wire is pulled out.
  • a protrusion having a size smaller than the diameter of the core wire can be pulled out by pushing the center portion of the core wire and pulling the end of the core wire that appears on the opposite surface. After the metal core wire is pulled out, it is finished to give a product.
  • a phosphor bronze wire having a circular cross section with a diameter of 0.126 mm and a length of 50 mm place the core wire in a core wire holder, place it in an electric bath containing nickel sulfamate as a main component, and discharge the holder. ⁇ ⁇ Set rotatable in the bath.
  • an anode in which nickel spheres were put in a titanium net put in a polyester bag was set in an electric bath.
  • electricity was applied at a current density of about 8AZdm2 for 6 hours.
  • An electronic product having an outer diameter of lmm was obtained.
  • the phosphor bronze core wire was removed by extruding the phosphor bronze core wire from one end with a pointed jig and simultaneously pulling out the extruded phosphor bronze core wire. Finally, it was polished and finished to obtain a ferrule.
  • the inner diameter of the obtained ferrule was 0.126 mm
  • the outer diameter was 1 mm
  • the tolerance of roundness was within 2 ⁇
  • the tolerance of coaxiality was within 2 / xm.
  • ferrules with an outer diameter of 1.25 mm in 7.5 hours of electricity and 0.75 mm in outer diameter of 4.5 hours were obtained. In each case, the roundness tolerance and coaxiality tolerance were within 2 ⁇ .
  • the power supply time ones with outer diameters of 3.0 mm, 2.5 mm and 2.0 mm were obtained.
  • the circularity tolerance is the difference between the center values of 12 diameters measured every 30 degrees by image processing.
  • the coaxiality is the difference between the center coordinates of the inner diameter and the outer diameter similarly obtained by image processing.
  • the electric power With the electric power, a ferrule having a normal size can be obtained, and a ferrule having a small size, in particular, a small outer diameter can be obtained.
  • the outer diameter of the mainstream ferrule made of zirconia is limited to at most about 1.25 mm, but the present invention can produce an outer diameter of about 0.5 mm. .
  • the manufacture of ferrules by electric power does not require expensive molding machines and molds, and only requires inexpensive electric power equipment. Also, there is no baking process at high temperature, so energy costs are low.
  • electrodes have extremely high dimensional transfer accuracy, product dimensions must be measured The accuracy is so high that it is not necessary to classify the data according to a certain rule.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

L'invention concerne une virole métallique de petite taille aux dimensions précises ainsi qu'un procédé de fabrication associé, économique dans lequel aucune machine à mouler ou aucun moule onéreux ne sont requis. L'invention concerne également une virole métallique présentant un diamètre intérieur compris entre 0, 125 et 0, 130 mm et un diamètre extérieur compris entre 2, 0 et 3, 0 mm. L'invention concerne également une virole métallique présentant un diamètre intérieur compris entre 0, 125 et 0, 130 mm et un diamètre extérieur compris entre 0, 25 et 1, 25 mm, ainsi qu'une virole métallique de petite taille présentant un diamètre intérieur compris entre 0, 126 et 0, 128 mm et un diamètre extérieur compris entre 0, 25 et 0, 9 mm. On crée ces viroles métallique en formant un film métallique sur la surface extérieure d'un fil noyau de diamètre extérieur faible par électromoulage afin de former une colonne métallique de diamètre extérieur prédéterminé, en coupant cette colonne métallique sur des longueurs prédéterminées en vue d'obtenir des blocs colonnes, en poussant un gabarit dans la zone de la surface d'extrémité du fil noyau d'un bloc colonne en vue de projeter à l'extérieur par l'autre surface d'extrémité du bloc colonne le fil noyau et en tirant ce fil par serrage de la portion du fil qui se projette.
PCT/JP2000/009268 1999-12-28 2000-12-26 Virole metallique et procede de fabrication associe WO2001048270A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU24031/01A AU2403101A (en) 1999-12-28 2000-12-26 Metal ferrule and method of producing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/373095 1999-12-28
JP37309599 1999-12-28

Publications (1)

Publication Number Publication Date
WO2001048270A1 true WO2001048270A1 (fr) 2001-07-05

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Application Number Title Priority Date Filing Date
PCT/JP2000/009268 WO2001048270A1 (fr) 1999-12-28 2000-12-26 Virole metallique et procede de fabrication associe

Country Status (3)

Country Link
AU (1) AU2403101A (fr)
TW (1) TW526290B (fr)
WO (1) WO2001048270A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017072653A (ja) * 2015-10-05 2017-04-13 住友電気工業株式会社 光接続部品、光処理装置、光接続部品を作製する方法、ガイド部材生産物を作製する方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09127368A (ja) * 1995-10-31 1997-05-16 Kyocera Corp 光コネクタ用フェルールの固定構造
JPH11211935A (ja) * 1998-01-26 1999-08-06 Dai Ichi Kasei Kk 光コネクター用フェルール及びセラミックス筒状体並びにその製造方法
JPH11218643A (ja) * 1998-01-30 1999-08-10 Kyocera Corp 光ファイバ用接続部材及びその製造方法
JPH11248969A (ja) * 1998-03-06 1999-09-17 Toshiba Corp 光学式計測装置
JP2000292651A (ja) * 1999-04-08 2000-10-20 Koshin Giken Kk 光ファイバーコネクター用部品及びその製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09127368A (ja) * 1995-10-31 1997-05-16 Kyocera Corp 光コネクタ用フェルールの固定構造
JPH11211935A (ja) * 1998-01-26 1999-08-06 Dai Ichi Kasei Kk 光コネクター用フェルール及びセラミックス筒状体並びにその製造方法
JPH11218643A (ja) * 1998-01-30 1999-08-10 Kyocera Corp 光ファイバ用接続部材及びその製造方法
JPH11248969A (ja) * 1998-03-06 1999-09-17 Toshiba Corp 光学式計測装置
JP2000292651A (ja) * 1999-04-08 2000-10-20 Koshin Giken Kk 光ファイバーコネクター用部品及びその製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017072653A (ja) * 2015-10-05 2017-04-13 住友電気工業株式会社 光接続部品、光処理装置、光接続部品を作製する方法、ガイド部材生産物を作製する方法

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Publication number Publication date
AU2403101A (en) 2001-07-09
TW526290B (en) 2003-04-01

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