JP2676500B2 - Method for forming locking end forming material for steel pipe connection - Google Patents
Method for forming locking end forming material for steel pipe connectionInfo
- Publication number
- JP2676500B2 JP2676500B2 JP7138199A JP13819995A JP2676500B2 JP 2676500 B2 JP2676500 B2 JP 2676500B2 JP 7138199 A JP7138199 A JP 7138199A JP 13819995 A JP13819995 A JP 13819995A JP 2676500 B2 JP2676500 B2 JP 2676500B2
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- forming
- locking end
- forming material
- pipe connection
- 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 - Fee Related
Links
Description
【0001】[0001]
【産業上の利用分野】本発明は、流体輸送用の鋼管を接
続するに際し、鋼管の接続用端縁に係止端部を形成する
ための鋼管接続用係止端部形成材の成形方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a steel pipe connecting locking end forming material for forming a locking end portion on a connecting edge of a steel pipe when connecting a steel pipe for fluid transportation. .
【0002】[0002]
【従来の技術】給水や配水を始めとし、気体、粉体輸送
用配管は、フランジ継手、ネジ継手以外に、突き合わせ
面の周囲に嵌着させる例えばヴィクトリック型管継手を
利用する連結手段が知られている。このヴィクトリック
型管継手を利用するには、鋼管の接続端縁部に、継手部
材の係止用として、大径の段部を周設する加工が必要で
ある。この段部は、通常、接続端面に段付リング状の係
止端部形成材を溶着することにより形成している。2. Description of the Related Art In addition to flange joints and screw joints, pipes for supplying gas and powder, such as water supply and water distribution, are known to have a connecting means such as a Victrick type pipe joint that is fitted around the abutting surfaces. Has been. In order to use this Victaulic type pipe joint, it is necessary to form a large-diameter stepped portion around the connection end edge of the steel pipe for locking the joint member. This step portion is usually formed by welding a stepped ring-shaped locking end portion forming material to the connection end surface.
【0003】[0003]
【発明が解決しようとする課題】係止端部形成材は、接
合する鋼管と内径が等しい厚肉リング状素材の外周を切
削加工するのが合理的である。そのような素材は、厚肉
鋼管材を長手方向に対して所定の厚みに切断して形成さ
れるものであるが、適応する厚肉鋼管材が規格品の対象
から外れてしまい、入手が困難であるし、それを特別発
注するとなると、最低の応需量であっても、多額の費用
と膨大な在庫を抱える結果となる。又、太径部は厚肉で
あるから、複雑で接合部が多い配管では、総重量が設計
値を上回ってしまい、設計変更を余儀なくされる場合も
予想される。そこで本発明は、合理的構造の係止端部形
成材の成形方法の提供を目的とする。It is rational to cut the outer periphery of a thick ring-shaped material having the same inner diameter as the steel pipe to be joined as the material for forming the locking end. Such a material is formed by cutting a thick-walled steel pipe material to a predetermined thickness in the longitudinal direction, but the applicable thick-walled steel pipe material is out of the scope of the standard product and is difficult to obtain. However, if you place a special order for it, you will end up with a large amount of money and an enormous amount of inventory even with the lowest demand. Further, since the large-diameter portion is thick, it is expected that the total weight will exceed the design value and the design change will be unavoidable in the case of a complicated pipe having many joints. Therefore, an object of the present invention is to provide a method of forming a locking end portion forming material having a rational structure.
【0004】[0004]
【課題を解決するための手段】本発明は上記課題を解決
するため、先ず、接続すべき鋼管と同一の鋼管材を長手
方向に対して所定の厚みに切断し、次にその切断された
リング状素材の少なくとも他面側を拡径させ、最後に外
周を切削して他面側の外周に大径段部を形成することに
ある。尚、本発明において鋼管とは、鉄やステンレス製
に限定されることなく、銅やアルミ製の管を含め広義に
解する。In order to solve the above-mentioned problems, the present invention firstly cuts the same steel pipe material as the steel pipe to be connected to a predetermined thickness in the longitudinal direction, and then cuts the cut ring. It is to expand at least the other surface side of the strip-shaped material, and finally to cut the outer periphery to form a large-diameter step portion on the outer periphery of the other surface side. In the present invention, the term “steel pipe” is not limited to steel and stainless steel, and is broadly understood to include copper and aluminum pipes.
【0005】[0005]
【作用】他面側の内径を太くしたことによって段部の形
成が可能で、他面側は薄肉となるし、軽量化される。
又、接続すべき鋼管と同一の鋼管材を効率よく利用して
形成するから、出発素材の入手が容易となり、安価で、
小量の需要にも対応しやすくなる。By increasing the inner diameter on the other surface side, a step can be formed, and the other surface side can be made thin and lightweight.
Also, since the same steel pipe material as the steel pipe to be connected is used efficiently, it is easy to obtain the starting material, and it is cheap.
It becomes easier to meet small demand.
【0006】[0006]
【実施例】本発明に係る鋼管接続用係止端部形成材の成
形方法を図面に基づいて説明する。先ず形成工程を説明
すると、最初の第1工程で、量産された規格品の長尺鋼
管材1を、長手方向に対し5cm程度の厚みのリング状に
切断し、これを素材2とする(図1)。次にその切断さ
れた素材2をプレス機3にセットし、リング穴内にテー
パーパンチ3を圧入してパンチ圧入側を拡径させる(図
2)。最後に外周を切削し、拡径側に大径段部4を形成
する(図3)。DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for forming a steel pipe connecting locking end forming material according to the present invention will be described with reference to the drawings. First, the forming step will be described. In the first step, the mass-produced standard long steel pipe material 1 is cut into a ring shape having a thickness of about 5 cm in the longitudinal direction, which is used as a material 2 (Fig. 1). Next, the cut material 2 is set in the press machine 3, and the tapered punch 3 is press-fitted into the ring hole to expand the punch press-fitting side (FIG. 2). Finally, the outer circumference is cut to form the large-diameter step portion 4 on the expanded diameter side (FIG. 3).
【0007】このように形成された鋼管接続用係止端部
形成材は、リング穴内が、テーパーパンチ3の圧入によ
りテーパ面Fとなっているから、軽量となり、又小径側
が鋼管の径に等しいので、鋼管の端面にその延長上に連
続するよう溶着でき、そのようにすれば、図4に示す如
く、鋼管の端縁部周囲に係止用の大径段部を一体に形成
することができる。The steel pipe connecting locking end forming member thus formed is light in weight because the inside of the ring hole is the tapered surface F due to the press-fitting of the tapered punch 3, and the smaller diameter side is equal to the diameter of the steel pipe. Therefore, it can be welded to the end surface of the steel pipe so as to be continuous on its extension. By doing so, a large diameter step portion for locking can be integrally formed around the end edge portion of the steel pipe as shown in FIG. it can.
【0008】前記実施例は、テーパーパンチの圧力によ
り内径がテーパ面となっているが、先端のみにテーパを
有したパンチを使用することにより、テーパなしの鋼管
接続用係止端部形成材を形成することも可能である。In the above embodiment, the inner diameter has a tapered surface due to the pressure of the tapered punch. However, by using a punch having a taper only at the tip, a non-tapered steel pipe connecting locking end forming material can be obtained. It is also possible to form.
【0009】尚、拡径工程においては、外周を拘束して
大径段部を矯正することが望ましく切削部分が少なくて
すむ。In the step of expanding the diameter, it is desirable to restrain the outer circumference to correct the large-diameter step portion, and the cutting portion can be reduced.
【0010】[0010]
【発明の効果】本発明によれば、他面側の内径を太くし
たことで、他面側が薄肉となり、軽量化され、接続すべ
き鋼管と同一の鋼管材を効率よく利用して形成するか
ら、出発素材の入手が容易となり、安価で、小量の需要
にも対応しやすい。According to the present invention, since the inner diameter of the other surface side is made thicker, the other surface side becomes thinner and lighter in weight, and the same steel pipe material as the steel pipe to be connected is efficiently used for the formation. , It is easy to obtain starting materials, it is cheap, and it is easy to meet small demand.
【図1】本発明に係る鋼管接続用係止端部形成材の素材
を長尺鋼管からの切り出す説明図である。FIG. 1 is an explanatory view of cutting out a raw material of a steel pipe connecting locking end forming material according to the present invention from a long steel pipe.
【図2a】切断された素材をプレス機にセットした説明
図である。FIG. 2a is an explanatory diagram in which the cut material is set in a press.
【図2b】素材がプレス機のテーパーパンチの圧入によ
り拡径された様子を示す説明図である。FIG. 2b is an explanatory view showing a state in which the material is expanded in diameter by press fitting of a tapered punch of a press machine.
【図3a】拡径された素材の断面図である。FIG. 3a is a cross-sectional view of the expanded material.
【図3b】拡径された素材の外周を切削加工し大径段部
を形成し完成した鋼管接続用係止端部形成材の断面図で
ある。FIG. 3b is a cross-sectional view of a steel pipe connecting engagement end forming material completed by cutting the outer circumference of the expanded material to form a large diameter step.
【図4】鋼管の端縁部に鋼管接続用係止端部形成材を溶
着し、完成した係止端部の斜視図である。FIG. 4 is a perspective view of a locking end portion completed by welding a steel pipe connecting locking end portion forming material to the end edge portion of the steel pipe.
【図5】ヴィクトリック型管継手により図4に示した鋼
管同士を接続した場合の説明断面図である。FIG. 5 is an explanatory cross-sectional view when the steel pipes shown in FIG. 4 are connected to each other by a Victaulic pipe joint.
1・・長尺鋼管材、2・・素材、2´・・拡径された素
材、3・・プレス機のテーパーパンチ、4・・大径段
部、F・・テーパ。1 ... long steel pipe material, 2 material, 2 '... expanded material, 3 taper punch for press, 4 large diameter step, F taper
Claims (1)
長手方向に対して所定の厚みに切断し、次にその切断さ
れたリング状素材の少なくとも他面側を拡径させ、最後
に外周を切削して他面側の外周に大径段部を形成する鋼
管接続用係止端部形成材の成形方法。1. First, the same steel pipe material as the steel pipe to be connected is cut into a predetermined thickness in the longitudinal direction, and then at least the other surface side of the cut ring-shaped material is expanded, and finally. A method for forming a steel pipe connecting engagement end forming material, wherein an outer circumference is cut to form a large-diameter step on the other surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7138199A JP2676500B2 (en) | 1995-06-05 | 1995-06-05 | Method for forming locking end forming material for steel pipe connection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7138199A JP2676500B2 (en) | 1995-06-05 | 1995-06-05 | Method for forming locking end forming material for steel pipe connection |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08332538A JPH08332538A (en) | 1996-12-17 |
JP2676500B2 true JP2676500B2 (en) | 1997-11-17 |
Family
ID=15216405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7138199A Expired - Fee Related JP2676500B2 (en) | 1995-06-05 | 1995-06-05 | Method for forming locking end forming material for steel pipe connection |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2676500B2 (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4865167A (en) * | 1971-12-11 | 1973-09-08 |
-
1995
- 1995-06-05 JP JP7138199A patent/JP2676500B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH08332538A (en) | 1996-12-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |