JPH01105088A - Metallic pipe with flange for connection and manufacture thereof - Google Patents
Metallic pipe with flange for connection and manufacture thereofInfo
- Publication number
- JPH01105088A JPH01105088A JP63096419A JP9641988A JPH01105088A JP H01105088 A JPH01105088 A JP H01105088A JP 63096419 A JP63096419 A JP 63096419A JP 9641988 A JP9641988 A JP 9641988A JP H01105088 A JPH01105088 A JP H01105088A
- Authority
- JP
- Japan
- Prior art keywords
- flange
- annular groove
- connecting flange
- hole
- metal pipe
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000002184 metal Substances 0.000 claims abstract description 74
- 238000000034 method Methods 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 abstract description 15
- 238000003466 welding Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Landscapes
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、接続用フランジ付金属管およびその製造方法
に関す墨ものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a metal pipe with a connecting flange and a method for manufacturing the same.
従来、この種の接続用フランジ付金属管およびその製造
方法としては、次に述べる二つの方法がある。Conventionally, there are the following two methods for producing this type of metal pipe with a connecting flange and its manufacturing method.
一つは、第４図に示すように、接続用フランジ２０の中
央貫通孔２１に内嵌する金属管２２を、その金属管２２
の管端面２仝が中央貫通孔２１の中途に位置するように
設け、中央貫通孔２１の内周面２４と管端面２３および
／または接続用フランジ２０の反接続面側の金属管２２
の外周面２５と中央貫通孔２１の周囲２６とを溶接して
製造する方法である。One is, as shown in FIG.
The inner peripheral surface 24 of the central through hole 21 and the metal tube 22 on the opposite connection surface side of the tube end surface 23 and/or the connecting flange 20
This is a method of manufacturing by welding the outer circumferential surface 25 of the central through hole 21 and the periphery 26 of the central through hole 21.
他の一つは、特開昭５０−１５４１５８号公報に開示さ
れているように、接続用フランジの接続面側に、その中
央貫通孔の端部が拡径した凹入段部を同心状に形成する
と共にこの凹入段部の、周壁を遠心方向側に凹入させ、
一方、前記中央貫通孔に丁度内嵌し得る太さの金属管の
端部には、この金属管を拡径変形させてフランジ部を一
体に形成させておき、このフランジ部と前記凹入段部と
が相対向するように前記金属管を前記フランジの中央貫
通孔に挿入し、そして前記金属管のフランジ部を前記凹
入段部との間で圧縮して当該凹入段部内に前記フランジ
部を嵌入させると同時にこのフランジ部の周縁部を前記
凹入段部の凹入周壁内に圧入せしめて金属管とフランジ
とを一体化して製造する方法である゛。The other method, as disclosed in Japanese Patent Application Laid-open No. 50-154158, is to concentrically form a concave stepped portion on the connecting surface side of the connecting flange, with the end of the central through hole having an enlarged diameter. At the same time, the peripheral wall of the recessed stepped portion is recessed in the centrifugal direction,
On the other hand, a flange portion is integrally formed at the end of the metal tube with a diameter that can be fit into the central through hole by expanding the diameter of the metal tube, and this flange portion and the recessed step are formed integrally. The metal tube is inserted into the central through hole of the flange so that the flange portions face each other, and the flange portion of the metal tube is compressed between the recessed step portion and the flange is inserted into the recessed step portion. In this method, the metal pipe and the flange are manufactured by integrally fitting the metal pipe and the flange by press-fitting the peripheral edge of the flange part into the recessed peripheral wall of the recessed stepped part at the same time.
上記従来の技術の項に述べた前者の接続用フランジ付金
属管の製造方法は、消耗電極式溶接によるものであるた
め、溶接時に発生するガスやヒユーム等で作業環境が悪
い上、管および接続用フランジへの熱影響等を考慮した
溶接条件の選定が必要であり、しかも溶接作業そのもの
が煩雑であった。また管および接続用フランジへの熱影
響を考えると、これらを薄いものにして重量軽減を計る
にも限度がある上、このようにして製造された接続用フ
ランジ付金属管は、溶接開始と終わりの部分にピンホー
ル等の欠陥を有することがあるので品質管理にも工数を
要し、製造コストが高いものになっていた。The former method of manufacturing metal pipes with connecting flanges described in the prior art section uses consumable electrode welding, which creates a poor working environment due to the gas and fumes generated during welding, and the pipes and connections. It is necessary to select welding conditions in consideration of the thermal influence on the flange, and the welding work itself is complicated. Furthermore, considering the thermal effects on the pipe and connecting flanges, there is a limit to the ability to reduce weight by making them thinner, and metal pipes with connecting flanges manufactured in this way are Since the parts may have defects such as pinholes, quality control also requires many man-hours, resulting in high manufacturing costs.
一方、後者の接続用フランジ付金属管の製造方法は、金
属管のフランジ部を接続用フランジの凹入段部との間で
圧縮して凹入段部内にフランジ部を嵌入させると同時に
、このフランジ部の周縁部を凹入段部の周壁を遠心方向
側に凹入して形成した凹入周壁内に圧入せしめて金属管
とフランジとを一体化するものであるから、前者の溶接
による作業環境や熱影響の問題点は解消されるが、金属
管のフランジ部の周縁部を上下方向からの圧縮力によっ
て遠心方向側へ張出し、接続用フランジの凹入段部の遠
心方向側に形成した凹入周壁内へ圧入して充満させるこ
とは難しく、金属管の肉厚が薄くなればなおのこと難し
くなり、接続用フランジと金属管とが強固に結合した接
続用フランジ付金属管が安定して得にくい。On the other hand, the latter method of manufacturing a metal pipe with a connecting flange involves compressing the flange portion of the metal tube between the recessed step of the connecting flange and fitting the flange into the recessed step. Since the peripheral edge of the flange part is press-fitted into the recessed peripheral wall formed by recessing the peripheral wall of the recessed stepped part in the centrifugal direction to integrate the metal tube and the flange, the former work involves welding. Although the problem of environmental and thermal effects is solved, the peripheral edge of the flange part of the metal tube is extended in the centrifugal direction by compressive force from the top and bottom, and it is formed on the centrifugal side of the recessed step part of the connection flange. It is difficult to press fit into the surrounding wall of a recess and fill it up, and it becomes even more difficult as the wall thickness of the metal tube becomes thinner. Therefore, it is difficult to stably obtain a metal tube with a connecting flange in which the connecting flange and the metal tube are firmly connected. Hateful.
そこで、本発明は、畝上の問題点に鑑みて、良好な作業
環境の下で作業ができ、且つ、金属管の肉厚に左右され
ることなく接続用フランジとの結合が強固になされると
同時に、同品質のものが安定して得られる接続用フラン
ジ付金属管の製造方法とその接続用フランジ付金属管と
を提供することを目的とするものである。Therefore, in view of the problems caused by the ridges, the present invention enables work to be carried out in a favorable working environment, and allows for a strong connection with the connecting flange without being affected by the wall thickness of the metal pipe. At the same time, it is an object of the present invention to provide a method for manufacturing a connecting flanged metal tube that can stably obtain products of the same quality, and a connecting flanged metal tube.
上記目的を達成するために、本発明の接続用フランジ付
金属管は、中央に貫通孔を有し、且つ接続側面に、中央
貫通孔と同心状に環状溝を形成し、この環状溝と中央貫
通孔との間に環状壁を有する接続用フランジと、この接
続用フランジの中央貫通孔に内嵌して設けられ、且つ端
部に、外周側へ拡径反転された反転部を有する金属管と
で構成されると共に、前記金属管の反転部が前記接続用
フランジの環状溝内の内外周壁に挟持されて成るもので
ある。In order to achieve the above object, the metal pipe with a connecting flange of the present invention has a through hole in the center, and an annular groove is formed on the connecting side surface concentrically with the central through hole. A connecting flange having an annular wall between the connecting flange and the through hole, and a metal tube that is fitted inside the central through hole of the connecting flange and has an inverted portion at the end with an expanded diameter toward the outer circumference. The inverted portion of the metal tube is sandwiched between the inner and outer circumferential walls within the annular groove of the connection flange.
また、本発明の接続用フランジ付金属管の製造方法は、
接続用フランジの接続側面に、中央貫通孔と同心状に環
状溝を形成して、この環状溝と中央貫通孔との間に環状
壁を設ける一方、接続用フランジの中央貫通孔に内嵌し
て設けられる金属管の接続用フランジの接続側面側の端
部に、外周側へ拡径反転された反転部を設け、この反転
部を前記接続用フランジの環状溝に圧入すると共に、前
記接続用フランジの環状壁を、外方へ押し倒し、環状溝
内の内外周壁が前記反転部を圧接して挟持するものであ
る。Further, the method for manufacturing a metal pipe with a connecting flange of the present invention includes:
An annular groove is formed on the connection side of the connection flange concentrically with the center through hole, and an annular wall is provided between the annular groove and the center through hole, while the annular wall is fitted inside the center through hole of the connection flange. At the end of the connecting side surface side of the connecting flange of the metal pipe provided in The annular wall of the flange is pushed outward, and the inner and outer circumferential walls within the annular groove press against and hold the inverted portion.
また、前記接続用フランジの環状溝の外周壁がフランジ
の内方に進むにつれて環状溝が狭くなるテーパ状に形成
されていてもよい。Further, the outer circumferential wall of the annular groove of the connection flange may be formed in a tapered shape so that the annular groove becomes narrower as it goes inward of the flange.
金属管の端部に設けた反転部を接続用フランジの接続側
面にｉけた環状溝内に圧入すると共に、環状溝と中央貫
通孔との間に形成された環状壁を外方へ押し倒し、環状
溝内の内外周壁が前記反転部を圧接して挟持するもので
あるから、金属管の肉厚に左右されるこ゛となく、金属
管を接続用フランジに強固に結合することができる。The inverted part provided at the end of the metal tube is press-fitted into the annular groove formed on the connection side of the connection flange, and the annular wall formed between the annular groove and the central through hole is pushed down outwards to form an annular shape. Since the inner and outer circumferential walls within the groove press and hold the inverted portion, the metal tube can be firmly connected to the connecting flange without being affected by the wall thickness of the metal tube.
また、接続用フランジの環状溝の外周壁を、フランジの
内方に進につれて環状溝が狭くなるテーパ状に形成する
ことにより、金属管を接続用フランジにより強固に結合
することができる。Further, by forming the outer circumferential wall of the annular groove of the connecting flange into a tapered shape in which the annular groove becomes narrower toward the inside of the flange, the metal pipe can be more firmly connected to the connecting flange.
以下に、本発明に係わる実施例を図面に基づいて説明す
る。Embodiments of the present invention will be described below based on the drawings.
第１図ａ乃至第１図Ｃは、金属管を接続用フランジに内
嵌してから結合させるまでの工程を説明するための断面
説明図である。FIG. 1A to FIG. 1C are cross-sectional explanatory views for explaining the steps from fitting the metal pipe into the connecting flange to joining the metal pipe.
図において、１は、中央貫通孔２と、接続側面３に中央
貫通孔２と同心状に形成された環状溝４゛と、この環状
溝４と中央貫通孔２との間に頂部５が弧状に形成された
環状壁６とを、予め切削加工により設けられた接続用フ
ランジである。In the figure, reference numeral 1 indicates a central through hole 2, an annular groove 4' formed on a connecting side surface 3 concentrically with the central through hole 2, and an arcuate top 5 between the annular groove 4 and the central through hole 2. A connecting flange is provided by cutting an annular wall 6 formed in advance.
７は、その端部８に外周９側へ拡径反転された円弧状反
転部ＩＯを、プレスによる成形加工により設けられた金
属管である。Reference numeral 7 designates a metal tube having an arcuate inverted portion IO whose diameter is enlarged toward the outer periphery 9 at its end portion 8 by molding using a press.
そして、これら接続用フランジ１と金属管７とは、次の
要領で結合される。 ′先ず、第１図ａに示すよ
うに、接続用フランジ１の中央貫通孔２に金属管７を内
嵌して設けたものをプレスの下型Ａに載置すると共に、
接続用フランジ１の接続側面３からの金属管７の突出量
を調整し、その位置で、金属管７の円弧状反転部１０を
接続用フランジ１の環状溝４に圧入する際、金属管７が
軸方向へ移動しないようにストッパ（図示せず、）を掛
ける。Then, these connecting flange 1 and metal tube 7 are connected in the following manner. 'First, as shown in Fig. 1a, a metal tube 7 fitted into the central through hole 2 of a connecting flange 1 is placed on the lower mold A of the press, and
When adjusting the amount of protrusion of the metal tube 7 from the connection side surface 3 of the connection flange 1 and press-fitting the arcuate inverted portion 10 of the metal tube 7 into the annular groove 4 of the connection flange 1 at that position, the metal tube 7 A stopper (not shown) is applied to prevent the shaft from moving in the axial direction.
次いで、第１図すに示すように、金属管７の内径と略等
しい外径の芯金Ｂを中心部に有するプレスの上型Ｃを下
降して、金属管７の円弧状反転部１０を接続用フランジ
１の環状溝４に圧入する。この“圧入に゛よって、金属
管７の円弧状反転部１０の先端部分１１は、接続用フラ
ンジ１の環状溝４の底部１２との間で圧縮力を受けて、
反転および／または膨出等の複雑な形状に変形して環状
溝４内の底部側に充満する。Next, as shown in FIG. 1, the upper die C of the press, which has a core B having an outer diameter approximately equal to the inner diameter of the metal tube 7 in the center, is lowered to remove the arcuate inverted portion 10 of the metal tube 7. Press fit into the annular groove 4 of the connecting flange 1. Due to this press-fitting, the tip portion 11 of the arc-shaped inverted portion 10 of the metal tube 7 receives a compressive force between it and the bottom portion 12 of the annular groove 4 of the connecting flange 1.
It deforms into a complicated shape such as inversion and/or bulge, and fills the bottom side of the annular groove 4.
この後、第１図Ｃに示すように、テーパ角度２０度の芯
金りを中心部に有するプレスの上型Ｅを下降して、接続
用フランジ１の環状溝４の入口幅が金属管７の肉厚に等
しくなる位置まで金属管７の内部に圧入する。この圧入
によって、金属管７の管端部１３はテーパ状に押し広げ
られ、同時に接続用フラ゛イジ１の環状壁６も外方へ押
し倒されるので、円弧状反転部ｌＯが環状ｊ薄４内の内
外周壁１４゜１５の間に圧接され強固に結合される。Thereafter, as shown in FIG. Press fit into the metal tube 7 until the wall thickness becomes equal to the thickness of the metal tube 7. By this press-fitting, the tube end 13 of the metal tube 7 is expanded into a tapered shape, and at the same time, the annular wall 6 of the connecting flange 1 is also pushed outward, so that the arcuate inverted portion 10 is inserted into the annular thin 4. The inner and outer circumferential walls 14 and 15 of the inner and outer peripheral walls 14 and 15 are pressed together and firmly connected.
尚、上記工程では、圧入工程（第１ｒｊ！Ｊｂ）と圧接
工程（第１図Ｃ）とで、プレスの上型を換えて行う例を
説明したが、圧入工程で使用したプレスの上型Ｃの芯金
Ｂの付根部に所定のテーパ形状を設け、圧入後引き続い
て圧接を行ってもよい。In the above process, an example was explained in which the upper die of the press was changed between the press-fitting process (1st rj! Jb) and the press-welding process (Fig. 1C), but the upper die of the press used in the press-fitting process A predetermined tapered shape may be provided at the base of the core metal B, and pressure welding may be performed continuously after press-fitting.
また、接続用フランジ１の中央貫通孔２、環状溝４およ
び環状壁６等の加工は、接続用フランジｌの厚さが薄い
場合は切削加工より鍛造プレス加工による方が生産性が
よい。但し、この鍛造プレス加工による場合は、接続用
フランジ１の中央貫通孔２の周辺の下面が中央貫通孔２
を中心に同心状に盛り上がった形状になる。In addition, when processing the central through hole 2, annular groove 4, annular wall 6, etc. of the connecting flange 1, if the connecting flange 1 is thin, forging press working is more productive than cutting. However, in the case of this forging press work, the lower surface around the center through hole 2 of the connection flange 1 is the center through hole 2.
It becomes a concentric raised shape with .
また、上記工程により製造された接続用フランジ付金属
管は、接続用フランジ１の環状溝４の外周壁１５が中央
貫通孔２の軸心に平行なもの（第２図ａ）より、接続用
フランジ１の内方に進むにつれて環状溝４が狭くなるテ
ーパ状に形成されたもの（第２図ｂ）の方が、テーパに
よって、金属管７が軸方向に抜は難くなり、金属管７を
接続用フランジ１により強固に結合することができる。In addition, the metal pipe with a connecting flange manufactured by the above process is better than the one in which the outer peripheral wall 15 of the annular groove 4 of the connecting flange 1 is parallel to the axis of the central through hole 2 (FIG. 2a). If the annular groove 4 is formed in a tapered shape that narrows toward the inside of the flange 1 (Fig. 2b), the taper makes it difficult to pull out the metal tube 7 in the axial direction. The connecting flange 1 allows for a strong connection.
またさらに、金属管７として、接続用フランジ１の中央
貫通孔２に内接する部分の長さに当たる位置にフレアー
加工した拡径部１６（第３図ａ）あるいは大径管１７を
縮径加工した段径部１Ｂ（第３図ｂ）を有する金属管７
を使用する゛ことによ、って、軸方向の力に対する抗力
が向上し、より強固に結合した接続用フランジ付金属管
が得られる。Furthermore, as the metal pipe 7, an enlarged diameter part 16 (FIG. 3a) is flared at a position corresponding to the length of the part inscribed in the central through hole 2 of the connecting flange 1, or a large diameter pipe 17 is reduced in diameter. Metal tube 7 having stepped diameter portion 1B (Fig. 3b)
By using this, the resistance against axial force is improved, and a metal tube with a connecting flange that is more firmly connected can be obtained.
次に、上記工程による方法と従来の技術の項で述べた溶
接による方法とによって、■：厚さ２．３ｍｍの接続用
フランジと管外径５０．８＋ａｌｌ、肉厚１ 、６ｍｍ
の金属管との組み合わせ、■：厚さ６．０＋ＩＩ＋＋＋
の接続用フランジと管外径６３．５１１ＲＩ、肉厚２．
０ＬＩＩＩｌｌの金属管との組み合わせによる接続用フ
ランジ付金属管を製造した結果、上記工程による方法で
は、どの組み合わせも強固に結合した接続用フランジ付
金属管が得られたが、溶接による方法では、■は金属管
の肉厚が薄くて溶接ができなかった。■は金属管および
接続用フランジの溶接部周りの強度が健全部の強度より
共に約３０％程度低くなり、強度を必要とする配管等の
用途に使用する場合は、金属管の肉厚および／または接
続用フランジの厚さを厚（する必要があり、材料費が高
く付く。Next, by the above-mentioned process and the welding method described in the prior art section, ■: a connecting flange with a thickness of 2.3 mm, a pipe outer diameter of 50.8 + all, and a wall thickness of 1.6 mm.
Combination with metal tube, ■: Thickness 6.0+II+++
Connection flange and pipe outer diameter 63.511RI, wall thickness 2.
As a result of manufacturing a metal tube with a connection flange in combination with a metal tube of 0LIIIll, the method using the above process yielded a metal tube with a connection flange that was firmly connected, but with the welding method, The metal tube was too thin to weld. In case of ■, the strength around the welded part of the metal pipe and the connecting flange is about 30% lower than the strength of the healthy part. Alternatively, the thickness of the connecting flange must be increased, which increases material costs.
本発明によれば、良好な作業環境の下で作業ができ、且
つ、金属管の肉厚に左右されることなく接続用フランジ
との結合が強固になされる接続用フランジ付金属管が製
造できる他、管および接続用フランジの材料を薄いもの
にして重量軽減が計れ、引いては加工コストを安価な接
続用フランジ付金属管が得られる。According to the present invention, it is possible to manufacture a metal pipe with a connecting flange that can be worked in a good working environment and is firmly connected to the connecting flange regardless of the wall thickness of the metal pipe. In addition, the weight can be reduced by making the material of the pipe and the connecting flange thinner, and as a result, a metal pipe with a connecting flange can be obtained at low processing cost.
第１図ａ乃至第１図Ｃは、本発明、に係わる実−施例の
製造工程の断面説明図、第２図ａおよび第２図すは、本
発明に係わる実施例の接続用フランジと金属管の結合状
態図、第３図ａおよび第３図すは、本発明に係わる別の
実施例の接続用フランジと金属管の結合状態図、第４図
は、従来例を示す説明図である。
１ 接続用フランジ ２ 中央貫通孔３ 接続側面
４ 環状溝
６ 環状壁 ７ 金属管
１０ 円弧状反転部 １１ 先端部分１２
底部 １３ 管端部 ・ −１４内
周壁 １５ 外周壁１６ 拡径部
１７ 大径管１８ 段径部
Ａ プレスの下型 Ｂ、 Ｄ 芯金Ｃ，Ｅ
プレスの上型
特許出願人 林 俊 臣
代理人 弁理士 金 丸 章 −
第１図ａ
第１図ｂ1A to 1C are cross-sectional explanatory views of the manufacturing process of an embodiment of the present invention, and FIGS. FIGS. 3A and 3A are diagrams showing a state in which a metal pipe is coupled to a connecting flange according to another embodiment of the present invention, and FIG. 4 is an explanatory diagram showing a conventional example. be. 1 Connection flange 2 Center through hole 3 Connection side
4 Annular groove 6 Annular wall 7 Metal tube 10 Arc-shaped inverted portion 11 Tip portion 12
Bottom part 13 Pipe end part -14 Inner peripheral wall 15 Outer peripheral wall 16 Expanded diameter part
17 Large diameter pipe 18 Step diameter part A Press lower die B, D Core bar C, E
Press upper mold patent applicant Toshiomi Hayashi Agent Patent attorney Akira Kanemaru - Figure 1a Figure 1b
Claims (4)
通孔と同心状に環状溝を形成し、この環状溝と中央貫通
孔との間に環状壁を有する接続用フランジと、この接続
用フランジの中央貫通孔に内嵌して設けられ、且つ端部
に、外周側へ拡径反転された反転部を有する金属管とで
構成されると共に、前記金属管の反転部が前記接続用フ
ランジの環状溝内の内外周壁に挟持されて成ることを特
徴とする接続用フランジ付金属管。(1) A connecting flange having a through hole in the center, an annular groove formed on the connecting side surface concentrically with the central through hole, and an annular wall between the annular groove and the central through hole; a metal tube that is fitted into the central through-hole of the connection flange and has an inverted part at the end whose diameter is enlarged toward the outer circumference, and the inverted part of the metal tube is connected to the connection. A metal pipe with a connecting flange, characterized in that the metal pipe is sandwiched between inner and outer circumferential walls within an annular groove of a connecting flange.
ジの内方に進むにつれて環状溝が狭くなるテーパ状であ
ることを特徴とする第２請求項に記載の接続用フランジ
付金属管。(2) The metal pipe with a connecting flange according to claim 2, wherein the outer circumferential wall of the annular groove of the connecting flange is tapered so that the annular groove becomes narrower as it goes inward of the flange.
心状に環状溝を形成して、この環状溝と中央貫通孔との
間に環状壁を設ける一方、接続用フランジの中央貫通孔
に内嵌して設けられる金属管の接続用フランジの接続側
面側の端部に、外周側へ拡径反転された反転部を設け、
この反転部を前記接続用フランジの環状溝に圧入すると
共に、前記接続用フランジの環状壁を外方へ押し倒し、
環状溝内の内外周壁が前記反転部を圧接して挟持するこ
とを特徴とする接続用フランジ付金属管の製造方法。(3) An annular groove is formed on the connecting side of the connecting flange concentrically with the central through hole, and an annular wall is provided between the annular groove and the central through hole, while an annular wall is provided in the central through hole of the connecting flange. At the end of the connecting side surface side of the connecting flange of the metal pipe that is fitted inside, an inverted part whose diameter is enlarged toward the outer circumference is provided,
Press-fitting the inverted portion into the annular groove of the connection flange, and pushing down the annular wall of the connection flange outward;
A method for manufacturing a metal pipe with a connecting flange, characterized in that inner and outer circumferential walls within an annular groove press and hold the inverted portion.
ジの内方に進むにつれて環状溝が狭くなるテーパ状に形
成されてなることを特徴とする第３請求項に記載の接続
用フランジ付金属管の製造方法。(4) The metal with a connecting flange according to claim 3, wherein the outer circumferential wall of the annular groove of the connecting flange is formed in a tapered shape so that the annular groove becomes narrower as it goes inward of the flange. Method of manufacturing tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63096419A JPH0656231B2 (en) | 1987-07-08 | 1988-04-19 | Metal tube with connection flange and method of manufacturing the same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-171742 | 1987-07-08 | ||
| JP17174287 | 1987-07-08 | ||
| JP63096419A JPH0656231B2 (en) | 1987-07-08 | 1988-04-19 | Metal tube with connection flange and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01105088A true JPH01105088A (en) | 1989-04-21 |
| JPH0656231B2 JPH0656231B2 (en) | 1994-07-27 |
Family
ID=26437631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63096419A Expired - Fee Related JPH0656231B2 (en) | 1987-07-08 | 1988-04-19 | Metal tube with connection flange and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0656231B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5415443A (en) * | 1992-08-30 | 1995-05-16 | Hayashi; Toshiomi | Pipe with flange for pipe fitting, pipe flange used therewith and method of joining said pipe with flange with pipe |
| JPH0744310U (en) * | 1992-08-20 | 1995-11-14 | 株式会社平安コーポレーション | Presser for NC router |
-
1988
- 1988-04-19 JP JP63096419A patent/JPH0656231B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0744310U (en) * | 1992-08-20 | 1995-11-14 | 株式会社平安コーポレーション | Presser for NC router |
| US5415443A (en) * | 1992-08-30 | 1995-05-16 | Hayashi; Toshiomi | Pipe with flange for pipe fitting, pipe flange used therewith and method of joining said pipe with flange with pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0656231B2 (en) | 1994-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0195157B1 (en) | Method of forming box-section frame members | |
| EP0078551B1 (en) | Blank tube and main frame for a by bicycle | |
| JPH08226584A (en) | Flexible metallic hose connector and its formation | |
| JP2004106030A (en) | Method and apparatus for manufacturing special shaped tube stock for hydraulic bulging | |
| JPH07223030A (en) | Joining method of pipe and plate stock | |
| JPH01105088A (en) | Metallic pipe with flange for connection and manufacture thereof | |
| US4466566A (en) | Method of forming a thin walled annular channel | |
| JPH02197377A (en) | Pipe joint structure and pipe joining method | |
| JP3798086B2 (en) | Connection structure between thin-walled thin metal tube and pressure-resistant rubber hose and connection method thereof | |
| JPH0740058A (en) | Manufacture of eye joint | |
| JPS5820389A (en) | Structure of friction welded joint of pipe | |
| JPH06190479A (en) | Manufacture of combination type cam shaft | |
| JPS61212472A (en) | Joining method of pipe | |
| JPH0985367A (en) | Pipe working method | |
| JP4664521B2 (en) | Processing method of wheel disc for automobile | |
| JP2005319482A (en) | Manufacturing method for metallic muffler shell | |
| JPH1190578A (en) | Manufacture of steel tube with thick-walled tube end | |
| JPH05237578A (en) | Manufacture of hollow shaft with gear | |
| JPH01218774A (en) | Butt welding method and press die used therefor | |
| JP3223150B2 (en) | Pipe fitting and method of manufacturing the same | |
| RU2168381C1 (en) | Tube drawing tool | |
| RU2015681C1 (en) | Thermos flask manufacturing method | |
| JP2023092420A (en) | Forming method of cylindrical body with flange part and annular protruding part integrally formed on pipe end | |
| JPH1163329A (en) | Pipe connecting flange fitting method | |
| JPH0568361B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |