JP2004043931A - Corrugated horn and its manufacturing process - Google Patents

Corrugated horn and its manufacturing process Download PDF

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Publication number
JP2004043931A
JP2004043931A JP2002205940A JP2002205940A JP2004043931A JP 2004043931 A JP2004043931 A JP 2004043931A JP 2002205940 A JP2002205940 A JP 2002205940A JP 2002205940 A JP2002205940 A JP 2002205940A JP 2004043931 A JP2004043931 A JP 2004043931A
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Japan
Prior art keywords
corrugated
corrugated horn
horn
matrix
layer
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JP2002205940A
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Japanese (ja)
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JP4491189B2 (en
Inventor
Yutaro Sekimoto
関本　裕太郎
Kazufusa Noda
野田　一房
Michio Kobayashi
小林　道雄
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HIKIFUNE KK
NATIONAL ASTRONOMICAL OBSERVATORY OF JAPAN
National Astronomical Observatories of CAS
Oshima Prototype Engineering Co Ltd
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HIKIFUNE KK
NATIONAL ASTRONOMICAL OBSERVATORY OF JAPAN
National Astronomical Observatories of CAS
Oshima Prototype Engineering Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a process for manufacturing a corrugated horn having a precise corrugated tooth profile. <P>SOLUTION: The manufacturing process comprises a step wherein a matrix for the corrugated horn is prepared by forming corrugated teeth comprising concentric, fine irregularities through machining around the outer periphery of a matrix material made of Al or an Al alloy, a step wherein a metal material for the corrugated horn made of a single Au layer is formed through electroforming around the matrix and a step wherein the corrugated horn made of the single Au layer is taken out by melting and removing the matrix. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【技術分野】
本発明は、コルゲートホーンの製造方法及びコルゲートホーンに関する。
【０００２】
【従来技術およびその問題点】
コルゲートホーンは、主に電磁波の放射、受信に用いられているが、基本的には、中空円錐形状の内面に、同心状に微細な凹凸からなるコルゲート歯を多数形成してなっている。
【０００３】
このような微細なコルゲート歯を内面に有するコルゲートホーンは従来、次のように作られている。目的とする（製品としての）コルゲートホーンと雄雌の関係をなす母型を作成し、このコルゲートホーン母型の周囲に、Ｃｕ層を電鋳加工によって形成する。次に、コルゲートホーン母型だけを溶融除去してＣｕからなるコルゲートホーン金属材料を取り出すと、その内面には一次的にコルゲート歯が形成されている。さらに、この一次的に形成されているコルゲート歯の表面に、Ａｕ層をメッキによって形成し、コルゲート歯の表面精度を高める。
【０００４】
このようなコルゲートホーンでは、使用波長が短波長になるにつれ（例えば波長がミリからサブミリオーダになるにつれ）、コルゲート歯のピッチと深さが一層微細化している。例えば、コルゲート歯のピッチと深さが数十μｍと微細化すると、Ｃｕ層によって一次的に形成されているコルゲート歯に沿わせてＡｕ層をメッキするとき、Ａｕが微細な凹部内に十分進入せず、必要な精度が得られないことが判明してきた。
【０００５】
【発明の目的】
本発明は、コルゲートホーンの製造方法についての以上の問題意識に基づき、正確なコルゲート歯形状を有するコルゲートホーンの製造方法を得ることを目的とする。また本発明は、そのような正確なコルゲート歯形状を有するコルゲートホーンを得ることを目的とする。
【０００６】
【発明の概要】
本発明は、従来アルミ母型外周に電鋳加工によってＣｕを積層してコルゲートホーン形状を作成し、その後コルゲート歯内面にＡｕをメッキしている工程を改め、アルミ母型に直接Ａｕを電鋳加工すれば、アルミ母型の微細なコルゲート歯内に十分Ａｕが進入し、アルミ母型の正確な形状が再現できると事実に着目してなされたものである。
【０００７】
すなわち、本発明方法は、ＡｌまたはＡｌ合金からなる母型材料の外周面に、機械加工により同心状の微細な凹凸からなるコルゲーション歯を形成してコルゲートホーン母型を作成するステップと；このコルゲートホーン母型の周囲に、電鋳加工によってＡｕ単層からなるコルゲートホーン金属材料を形成するステップと；コルゲートホーン母型を溶融除去してＡｕ単層からなるコルゲートホーンを取り出すステップと；を有することを特徴としている。
【０００８】
本発明方法は、特にコルゲートホーン母型が、円錐状のコルゲート歯形成部分と、この円錐状コルゲート歯形成部分の小径側に連続させて形成した円柱状部と、断面形状が円形から矩形に滑らかに変化する丸角変換部と、断面矩形の角軸部とを有する場合に好適である。円柱状部、丸角変換部及び角軸部（コルゲートホーンとしては、中空円錐状部の小径部側に連続させて形成した円筒部、断面形状が円形から矩形に滑らかに変化する丸角変換筒部及び断面矩形の角筒部）もまた小径化しており、これらをコルゲートホーン母型本体と一体に成形することにより、高い同心性を確保することができる。
【０００９】
本発明の別の態様としては、Ａｕ層上にさらに電鋳加工によってＣｕ層を形成するステップを有してもよい。
【００１０】
本発明方法によって形成したコルゲートホーンは、Ａｕのみからなることを特徴としている。このコルゲートホーンは、中空円錐状部の小径部側に連続させて形成した円筒部と、断面形状が円形から矩形に滑らかに変化する丸角変換筒部と、断面矩形の角筒部とをさらに有する形態とすることができる。
【００１１】
コルゲートホーン母型を溶融する薬液は、ＡｌまたはＡｌ合金は溶融除去し、Ａｕは溶融しない薬液から選択する。具体的には、コルゲートホーン金属材料がＡｕのみからなる場合には硝酸が好ましく、Ａｕ上に他の金属をさらに積層する場合にはクロム酸を用いることが好ましい。
【００１２】
【発明の実施形態】
以下図示実施形態について本発明を説明する。図１ないし図３は、本発明方法の第一の実施形態を示している。この実施形態は、図１に示すように、Ａｌ合金からなるブランク材料１１を巨視的には円錐状でその外周面に微視的には微小なコルゲート歯（凸）１２ａを有するコルゲートホーン母型（凸型）１２に精密に加工する機械加工工程、図３に示すように、このコルゲートホーン母型１２をＡｕ電鋳槽２０内に入れてその表面にＡｕ層１３（コルゲートホーン１０）を形成するＡｕ電鋳加工工程、及びＡｕ電鋳加工の終了した素材をＡｕ電鋳槽２０から取り出し、図４に示すように、母型溶融除去薬液槽２１内に入れて、中心のコルゲートホーン母型１２を溶かして除去する溶融除去工程からなっている。
【００１３】
コルゲートホーン母型１２は、この実施形態では、コルゲート歯１２ａを有する円錐状のコルゲート歯形成部分１２Ａと、この円錐状コルゲート歯形成部分１２Ａの小径側に連続させて形成した円柱状部１２Ｂと、断面形状が円形から矩形に滑らかに変化する丸角変換部１２Ｃと、断面矩形の角軸部１２Ｄとを有している。コルゲートホーン母型１２をＡｌまたはＡｌ合金から形成する理由は、その優れた被削性にある。微細なコルゲート歯１２ａを正確な形状に機械加工するには、Ａｌが最も好ましい材料である。
【００１４】
従って、このコルゲートホーン母型１２の外周に電鋳加工によって形成されたＡｕ層１３（コルゲートホーン１０）の内面には、図２に示すように、円錐状コルゲート歯形成部分１２Ａ（コルゲート歯１２ａ）の形状に対応するコルゲート歯（凹）１３ａを有する中空円錐状部１３Ａ、この中空円錐状部１３Ａの小径部側に連続する、円柱状部１２Ｂに対応する円筒部１３Ｂと、断面形状が円形から矩形に滑らかに変化する、丸角変換部１２Ｃに対応する丸角変換筒部１３Ｃと、角軸部１２Ｄに対応する断面矩形の角筒部１３Ｄとが形成される。
【００１５】
このコルゲートホーン１０（コルゲートホーン母型１２）の中空円錐状部１３Ａ（円錐状コルゲート歯形成部分１２Ａ）、コルゲート歯１３ａ（コルゲート歯１２ａ）、円筒部１３Ｂ（円柱状部１２Ｂ）、丸角変換筒部１３Ｃ（丸角変換部１２Ｃ）、角筒部１３Ｄ（角軸部１２Ｄ）の具体的な寸法例を上げると、中空円錐状部１３Ａ（円錐状コルゲート歯形成部分１２Ａ）の大径側端部の直径が１０ｍｍ、小径部側の直径（円筒部１３Ｂ（円柱状部１２Ｂ）の直径）が０．６ｍｍφ、角筒部１３Ｄ（角軸部１２Ｄ）が０．１×０．２ｍｍ、コルゲート歯１２ａのピッチが８０μｍ、深さが２００μｍ程度である。コルゲート歯１２ａの深さは、円錐状コルゲート歯形成部分１２Ａの大径部側に向けて徐々に減少する。
【００１６】
母型溶融除去薬液槽２１内には、Ａｌコルゲートホーン母型１２を溶かすことができる薬液、例えばクロム酸が入れられている。電鋳加工は、周知のように、電鋳槽中に、Ａｌコルゲートホーン母型（被電鋳金属材料）と、電鋳金属材料（Ａｕ）からなるプラス電極２２とを挿入し、被電鋳金属材料をマイナス極に接続して行なわれる。
【００１７】
以上のコルゲートホーン１０はＡｕ層のみからなり、その内面のコルゲート歯１３ａは、コルゲートホーン母型１２のコルゲート歯１２ａ上に直接電鋳されていて微細なコルゲート歯１２ａの間に正確に進入している。このため、形状の正確なコルゲート歯１３ａを有するコルゲートホーン１０が得られる。勿論、Ａｕ層１３の電鋳工程では、Ａｕの厚さをＡｕ単独でコルゲートホーンとしての強度を有する厚さとする。
【００１８】
Ａｕ層１３上には別工程で、Ｃｕ層１４を同様に電鋳加工し、Ａｕ層１３とＣｕ層１４の二層構造のコルゲートホーン１０とすることもできる。この実施形態は、図３のＡｕ電鋳加工工程でＡｕ層１３を付着形成したＡｌコルゲートホーン母型１２を、図６に示すようにＣｕ電鋳槽２３に入れて、Ａｕ層１３上に、Ｃｕ層１４を同様に電鋳加工する工程を付加すればよい。図４のコルゲートホーン母型１２を溶融させる工程は同様に行う。この態様は、ＡｕとＣｕの熱膨張係数の差が問題にならないような使用環境下で使用されるコルゲートホーン１０をより安価に製造するために好適である。
【００１９】
以上のコルゲートホーン１０は、一般的な使用態様では、中空円錐状部１３Ａの大径側の端部を大気に開放し、角筒部１３Ｄの端部にはディテクターが装着される。
【００２０】
以上の実施例は、形状の単純なコルゲートホーンに本発明を適用したものであるが、本発明は、外周面に微細なコルゲート歯を有するコルゲートホーンであれば、すべてのコルゲートホーンの製造に適用できる。
【００２１】
【発明の効果】
以上のように本発明方法によれば、形状精度が高いコルゲートホーンを得ることができ、特に、波長がミリからサブミリオーダの電磁波用のコルゲートホーンの製造に好適である。
【図面の簡単な説明】
【図１】コルゲートホーン母型の形状例を示す断面図である。
【図２】図１のコルゲートホーン母型を用いる本発明方法の電鋳加工状態を示す図である
【図３】電鋳加工の終了後、コルゲートホーン母型を溶かす工程を示す図である。
【図４】図２の製造方法で製造したコルゲートホーンの断面図である。
【図５】本発明方法の別の電鋳加工状態を示す図である。
【図６】図４の製造方法で製造したコルゲートホーンの断面図である。
【符号の説明】
１０　コルゲートホーン
１１　Ａｌブランク材料
１２　コルゲートホーン母型
１２Ａ　円錐状コルゲート歯形成部分
１２Ｂ　円柱状部
１２Ｃ　丸角変換部
１２Ｄ　角軸部
１２ａ　コルゲート歯（凸）
１３　Ａｕ層
１３Ａ　中空円錐状部（体）
１３Ｂ　円筒部
１３Ｃ　丸角変換筒部
１３Ｄ　角筒部
１３ａ　コルゲート歯（凹）
１４　Ｃｕ層
２０　Ａｕ電鋳槽
２１　母型溶融除去薬液槽
２２　電極
２３　Ｃｕ電鋳層[0001]
【Technical field】
The present invention relates to a method for manufacturing a corrugated horn and a corrugated horn.
[0002]
[Prior art and its problems]
The corrugated horn is mainly used for radiating and receiving electromagnetic waves, but basically has a large number of corrugated teeth formed of concentric fine irregularities on the inner surface of a hollow conical shape.
[0003]
Conventionally, a corrugated horn having such fine corrugated teeth on its inner surface is manufactured as follows. A target mold (a product) having a male-female relationship with a corrugated horn is prepared, and a Cu layer is formed around the corrugated horn matrix by electroforming. Next, when only the corrugated horn matrix is melted and removed to take out a corrugated horn metal material made of Cu, corrugated teeth are formed on the inner surface thereof. Further, an Au layer is formed on the surface of the primarily formed corrugated tooth by plating to enhance the surface accuracy of the corrugated tooth.
[0004]
In such a corrugated horn, the pitch and depth of the corrugated teeth are becoming finer as the wavelength used becomes shorter (for example, as the wavelength goes from millimeters to sub-millimeters). For example, when the pitch and depth of the corrugated teeth are reduced to several tens of μm, when the Au layer is plated along the corrugated teeth formed primarily by the Cu layer, the Au sufficiently penetrates into the fine concave portions. Without this, it has been found that the required accuracy cannot be obtained.
[0005]
[Object of the invention]
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a corrugated horn having an accurate corrugated tooth shape based on the above awareness of the problem of the method for manufacturing a corrugated horn. Another object of the present invention is to obtain a corrugated horn having such an accurate corrugated tooth shape.
[0006]
Summary of the Invention
According to the present invention, a conventional process of forming a corrugated horn shape by laminating Cu on the outer periphery of an aluminum matrix by electroforming and then plating Au on the inner surface of the corrugated tooth is improved, and electroforming Au directly on the aluminum matrix. It has been made by paying attention to the fact that if processed, Au sufficiently penetrates into the fine corrugated teeth of the aluminum matrix, and the accurate shape of the aluminum matrix can be reproduced.
[0007]
That is, the method of the present invention comprises the steps of forming corrugated teeth having concentric fine irregularities by machining on an outer peripheral surface of a matrix material made of Al or an Al alloy to form a corrugated horn matrix; Forming a corrugated horn metallic material composed of a single Au layer around the horn matrix by electroforming; and removing a corrugated horn composed of a single Au layer by melting and removing the corrugated horn matrix. It is characterized by.
[0008]
In the method of the present invention, in particular, the corrugated horn matrix has a conical corrugated tooth forming portion, a cylindrical portion continuously formed on the small diameter side of the conical corrugated tooth forming portion, and a cross-sectional shape that is smooth from circular to rectangular. This is suitable for a case having a round-angle conversion section that changes to a square shape and a square axis section having a rectangular cross section. Column-shaped part, round-corner conversion part and square shaft part (corrugated horn is a cylindrical part formed continuously to the small diameter side of the hollow conical part, round-corner conversion cylinder whose cross-sectional shape changes smoothly from circular to rectangular Section and a rectangular tube section having a rectangular cross section) are also reduced in diameter, and by forming them integrally with the corrugated horn matrix main body, high concentricity can be secured.
[0009]
Another embodiment of the present invention may include a step of forming a Cu layer on the Au layer by electroforming.
[0010]
The corrugated horn formed by the method of the present invention is characterized in that it is made of only Au. This corrugated horn further includes a cylindrical portion formed continuously with the small-diameter portion side of the hollow conical portion, a round-angle conversion cylindrical portion whose cross-sectional shape smoothly changes from circular to rectangular, and a rectangular cylindrical portion having a rectangular cross-section. Can be provided.
[0011]
As a chemical solution for melting the corrugated horn matrix, Al or an Al alloy is melted and removed, and Au is selected from a chemical solution that does not melt. Specifically, when the corrugated horn metal material is made of only Au, nitric acid is preferable, and when another metal is further laminated on Au, chromic acid is preferably used.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the illustrated embodiments. 1 to 3 show a first embodiment of the method of the present invention. In this embodiment, as shown in FIG. 1, a blank material 11 made of an Al alloy is macroscopically conical and has a corrugated tooth (convex) 12a microscopically on its outer peripheral surface. (Machining process) for precisely processing the (convex mold) 12, as shown in FIG. 3, this corrugated horn matrix 12 is placed in an Au electroforming tank 20, and an Au layer 13 (corrugated horn 10) is formed on the surface thereof. The material subjected to the Au electroforming process and the Au electroforming process is taken out of the Au electroforming tank 20 and placed in a mother mold melting and removing chemical solution tank 21 as shown in FIG. 12 comprises a melting and removing step for melting and removing 12.
[0013]
In this embodiment, the corrugated horn matrix 12 includes a conical corrugated tooth forming portion 12A having corrugated teeth 12a, and a columnar portion 12B formed continuously on the small diameter side of the conical corrugated tooth forming portion 12A. It has a round-corner conversion section 12C whose cross-sectional shape smoothly changes from a circle to a rectangle, and a square axis section 12D having a rectangular cross-section. The reason for forming the corrugated horn matrix 12 from Al or an Al alloy is its excellent machinability. Al is the most preferred material for machining fine corrugated teeth 12a into precise shapes.
[0014]
Therefore, as shown in FIG. 2, a conical corrugated tooth forming portion 12A (corrugated teeth 12a) is formed on the inner surface of the Au layer 13 (corrugated horn 10) formed on the outer periphery of the corrugated horn matrix 12 by electroforming. A hollow conical portion 13A having corrugated teeth (concave) 13a corresponding to the shape of the above, a cylindrical portion 13B corresponding to the columnar portion 12B, which is continuous with the small diameter portion side of the hollow conical portion 13A, A round-angle conversion cylindrical portion 13C corresponding to the round-angle conversion portion 12C and a rectangular cylindrical portion 13D having a rectangular cross section corresponding to the square shaft portion 12D are formed, which smoothly change to a rectangle.
[0015]
Hollow conical portion 13A (conical corrugated tooth forming portion 12A), corrugated tooth 13a (corrugated tooth 12a), cylindrical portion 13B (columnar portion 12B) of this corrugated horn 10 (corrugated horn matrix 12), round angle conversion cylinder When the specific example of the dimensions of the portion 13C (the rounded corner converting portion 12C) and the square cylindrical portion 13D (the square shaft portion 12D) is raised, the large-diameter end portion of the hollow conical portion 13A (the conical corrugated tooth forming portion 12A) is obtained. Has a diameter of 10 mm, a diameter of the small-diameter portion side (diameter of the cylindrical portion 13B (columnar portion 12B)) is 0.6 mmφ, a square cylindrical portion 13D (square shaft portion 12D) is 0.1 × 0.2 mm, and a corrugated tooth 12a. Has a pitch of about 80 μm and a depth of about 200 μm. The depth of the corrugated teeth 12a gradually decreases toward the large diameter side of the conical corrugated tooth forming portion 12A.
[0016]
A chemical solution capable of dissolving the Al corrugated horn master mold 12, for example, chromic acid, is contained in the matrix melt removal chemical solution tank 21. In the electroforming process, as is well known, an Al corrugated horn matrix (electroformed metal material) and a positive electrode 22 made of an electroformed metal material (Au) are inserted into an electroforming tank. This is performed by connecting a metal material to the negative electrode.
[0017]
The above-mentioned corrugated horn 10 is made of only the Au layer, and the corrugated teeth 13a on the inner surface thereof are directly electroformed on the corrugated teeth 12a of the corrugated horn matrix 12, and accurately enter between the fine corrugated teeth 12a. I have. For this reason, the corrugated horn 10 having the corrugated teeth 13a having an accurate shape is obtained. Of course, in the electroforming step of the Au layer 13, the thickness of Au is set to a thickness having strength as a corrugated horn by Au alone.
[0018]
In another step, the Cu layer 14 may be electroformed on the Au layer 13 in a separate step to form the corrugated horn 10 having a two-layer structure of the Au layer 13 and the Cu layer 14. In this embodiment, the Al corrugated horn matrix 12 having the Au layer 13 adhered and formed in the Au electroforming step of FIG. 3 is put into a Cu electroforming tank 23 as shown in FIG. A step of similarly electroforming the Cu layer 14 may be added. The step of melting the corrugated horn matrix 12 of FIG. 4 is performed in the same manner. This embodiment is suitable for manufacturing the corrugated horn 10 used in an environment where the difference in the thermal expansion coefficient between Au and Cu does not matter, at a lower cost.
[0019]
In the above-described corrugated horn 10, in a general usage mode, the large-diameter end of the hollow conical portion 13A is opened to the atmosphere, and a detector is attached to the end of the rectangular tube portion 13D.
[0020]
In the above embodiment, the present invention is applied to a corrugated horn having a simple shape, but the present invention is applied to the manufacture of all corrugated horns as long as the corrugated horn has fine corrugated teeth on the outer peripheral surface. it can.
[0021]
【The invention's effect】
As described above, according to the method of the present invention, a corrugated horn having high shape accuracy can be obtained, and is particularly suitable for manufacturing a corrugated horn for electromagnetic waves having a wavelength of millimeter to submillimeter.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an example of the shape of a corrugated horn matrix.
FIG. 2 is a view showing an electroforming state of the method of the present invention using the corrugated horn matrix of FIG. 1; FIG. 3 is a view showing a step of melting the corrugated horn matrix after completion of the electroforming.
FIG. 4 is a sectional view of a corrugated horn manufactured by the manufacturing method of FIG. 2;
FIG. 5 is a view showing another electroforming state of the method of the present invention.
6 is a sectional view of a corrugated horn manufactured by the manufacturing method of FIG.
[Explanation of symbols]
Reference Signs List 10 Corrugated horn 11 Al blank material 12 Corrugated horn matrix 12A Conical corrugated tooth forming portion 12B Columnar portion 12C Round corner converting portion 12D Square shaft portion 12a Corrugated tooth (convex)
13 Au layer 13A Hollow conical part (body)
13B Cylindrical part 13C Round corner conversion cylindrical part 13D Square cylindrical part 13a Corrugated tooth (concave)
14 Cu layer 20 Au electroforming tank 21 Matrix melt removal chemical liquid tank 22 Electrode 23 Cu electroforming layer

Claims (5)

ＡｌまたはＡｌ合金からなる母型材料の外周面に、機械加工により同心状の微細な凹凸からなるコルゲーション歯を形成してコルゲートホーン母型を作成するステップと；
このコルゲートホーン母型の周囲に、電鋳加工によってＡｕ単層からなるコルゲートホーン金属材料を形成するステップと；
上記コルゲートホーン母型を溶融除去してＡｕ単層からなるコルゲートホーンを取り出すステップと；
を有することを特徴とするコルゲートホーンの製造方法。Forming corrugated teeth formed of concentric fine irregularities on the outer peripheral surface of a matrix material made of Al or an Al alloy by machining to form a corrugated horn matrix;
Forming a corrugated horn metallic material composed of a single Au layer around the corrugated horn matrix by electroforming;
Melting the corrugated horn matrix to remove a corrugated horn composed of a single Au layer;
A method for producing a corrugated horn, comprising: 請求項１記載のコルゲートホーンの製造方法において、コルゲートホーン母型は、円錐状のコルゲート歯形成部分と、この円錐状コルゲート歯形成部分の小径側に連続させて形成した円柱状部と、断面形状が円形から矩形に滑らかに変化する丸角変換部と、断面矩形の角軸部とを有し、これらのこの円錐状コルゲート歯形成部分、円柱状部、丸角変換部及び角軸部の外周全体にＡｕ単層からなるコルゲート金属材料を形成するコルゲートホーンの製造方法。2. The method of manufacturing a corrugated horn according to claim 1, wherein the corrugated horn matrix has a conical corrugated tooth forming portion, a cylindrical portion formed continuously on a small diameter side of the conical corrugated tooth forming portion, and a cross-sectional shape. Has a rounded corner converting portion that smoothly changes from a circular shape to a rectangular shape, and a rectangular shaft portion having a rectangular cross section, and has a conical corrugated tooth forming portion, a columnar portion, a rounded corner converting portion, and an outer periphery of the rectangular shaft portion. A method for manufacturing a corrugated horn in which a corrugated metal material entirely composed of a single Au layer is formed. 請求項１または２記載のコルゲートホーンの製造方法において、上記Ａｕ層上にさらに電鋳加工によってＣｕ層を形成するステップを有するコルゲートホーンの製造方法。3. The method of manufacturing a corrugated horn according to claim 1, further comprising a step of forming a Cu layer on the Au layer by electroforming. 中空円錐状体の内周面に、微細な凹凸からなるコルゲート歯を同心状に多数形成してなるコルゲートホーンであって、Ａｕのみからなることを特徴とするコルゲートホーン。A corrugated horn formed by concentrically forming a large number of corrugated teeth having fine irregularities on the inner peripheral surface of a hollow conical body, wherein the corrugated horn is made of only Au. 請求項４記載のコルゲートホーンにおいて、中空円錐状部の小径部側に連続させて形成した円筒部と、断面形状が円形から矩形に滑らかに変化する丸角変換筒部と、断面矩形の角筒部とをさらに有するコルゲートホーン。5. The corrugated horn according to claim 4, wherein the cylindrical portion is formed continuously with the small-diameter portion of the hollow conical portion, a round-angle conversion cylinder portion whose cross-sectional shape smoothly changes from circular to rectangular, and a rectangular tube having a rectangular cross-section. A corrugated horn further comprising a part.
JP2002205940A 2002-07-15 2002-07-15 Corrugated horn manufacturing method and corrugated horn Expired - Lifetime JP4491189B2 (en)

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JP2009055237A (en) * 2007-08-24 2009-03-12 National Institutes Of Natural Sciences Method for manufacturing corrugated horn
EP2664029A1 (en) * 2011-01-12 2013-11-20 Lockheed Martin Corporation Printed circuit board based feed horn
CN104152948A (en) * 2014-08-12 2014-11-19 上海航天电子通讯设备研究所 A precise electroforming method for making the subtle structure of a high frequency corrugation feed horn
CN116852054A (en) * 2023-08-31 2023-10-10 河南工学院 Terahertz conical corrugated horn layered casting and milling integrated manufacturing method

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CN109306504B (en) * 2018-09-12 2020-08-14 南京航空航天大学 Precision manufacturing method of electroforming core mould of high-frequency corrugated feed source loudspeaker

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CN116852054B (en) * 2023-08-31 2023-12-05 河南工学院 Terahertz conical corrugated horn layered casting and milling integrated manufacturing method

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