JPS62168617A - Bending device for metal pipe - Google Patents
Bending device for metal pipeInfo
- Publication number
- JPS62168617A JPS62168617A JP798786A JP798786A JPS62168617A JP S62168617 A JPS62168617 A JP S62168617A JP 798786 A JP798786 A JP 798786A JP 798786 A JP798786 A JP 798786A JP S62168617 A JPS62168617 A JP S62168617A
- Authority
- JP
- Japan
- Prior art keywords
- bending
- metal tube
- heating
- steel pipe
- cooling device
- 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.)
- Pending
Links
- 238000005452 bending Methods 0.000 title claims abstract description 76
- 239000002184 metal Substances 0.000 title claims abstract description 54
- 238000010438 heat treatment Methods 0.000 claims abstract description 72
- 238000001816 cooling Methods 0.000 claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 230000006698 induction Effects 0.000 abstract description 4
- 239000000498 cooling water Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、鋼管等の金属管の曲げ加工装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for bending metal pipes such as steel pipes.
従来２曲げ加工すべき金属管を、誘導加熱コイル等の環
状の加熱装置で局部的に環状に加熱し、該加熱部を前記
管の長手方向に相対的に移動させながら１曲げモーメン
トを与えて変形させ、その直後に冷却することにより、
連続的に曲げ加工する方法が知られている。Conventionally, a metal tube to be bent is locally heated in an annular shape using an annular heating device such as an induction heating coil, and a bending moment is applied while the heating section is moved relatively in the longitudinal direction of the tube. By deforming and cooling immediately after that,
A method of continuous bending is known.
この曲げ加工方法に使用される加熱装置と冷却装置とは
、一体構造のもので、一つの移動手段で移動させるのが
一般的である。特に、加熱装置として誘導加熱用の加熱
コイルを用いた場合には、コイルに直接冷却水の噴射口
を設けて冷却装置とするのが普通であり。The heating device and cooling device used in this bending method are generally of integral construction and are moved by one moving means. In particular, when a heating coil for induction heating is used as a heating device, it is common to provide a cooling water injection port directly on the coil to form a cooling device.
従ってコイルといえば、冷却装置を含めたものの呼称と
考えても間違いではなかった。Therefore, it would not be wrong to think that the term "coil" refers to something that includes a cooling device.
ところで、昨今２曲管に対する要求が多彩になったこと
と生産性向上を計る観点から、従来の構造だけでは対応
し切れないものも生じてきた。即ち、同じ金属管であっ
ても１曲げ半径や加工速度に応じた適正な加熱幅がある
ため、一つのコイルであらゆる曲げに応しることは出来
ず、従って曲げ半径や加工速度に応じた専用コイルを多
数用意しておき、加工の都度、専用コイルに取り替える
必要があった。このため、多数の専用コイルを用意する
ために設備費がかがり、また、この専用コイルへの交換
に手数がかかり、生産性が悪くなる等の問題点があった
。By the way, in recent years, demands for double-bent pipes have become more diverse, and from the viewpoint of improving productivity, there have been some cases that cannot be met with the conventional structure alone. In other words, even for the same metal tube, there is an appropriate heating width depending on the bending radius and processing speed, so one coil cannot handle all kinds of bending. It was necessary to prepare a large number of dedicated coils and replace them with the dedicated coils each time processing was performed. For this reason, there were problems such as the preparation of a large number of dedicated coils, which increased equipment costs, and the time required to replace the dedicated coils, resulting in poor productivity.
本発明は、かかる従来の問題点に鑑みて為されたもので
、専用コイルの個数を減じることができ、且つ交換作業
を削減することの可能な金属管の曲げ加工装置を提供す
ることを目的とする。The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a metal tube bending device that can reduce the number of dedicated coils and reduce replacement work. shall be.
本発明者は上記問題点を解決すべく鋭意検討の結果。 The present inventor has made extensive studies to solve the above problems.
金属管の加熱幅を、加熱コイルの幅を変えることなく。The heating width of the metal tube can be changed without changing the width of the heating coil.
冷却装置による冷却液の吹付位置を変更することにより
、任意に設定可能であることに着目し２本発明に到達し
た。即ち１本発明は、金属管を局部的に環状に加熱する
加熱装置と１局部的に環状に冷却する冷却装置とを、別
個の部品として製造し、更に、この加熱装置と冷却装置
との相対位置を任意に変更可能としたことを特徴とする
ものである。By changing the spraying position of the cooling liquid by the cooling device, we focused on the fact that it can be set arbitrarily and arrived at the present invention. That is, one aspect of the present invention is to manufacture a heating device that locally annularly heats a metal tube and a cooling device that locally annularly cools the metal tube as separate parts, and furthermore, The feature is that the position can be changed arbitrarily.
上記の構成になる本発明装置では、加熱装置と冷却装置
との相対位置を調整可能であるので、この相対位置の調
整により加熱幅を設定でき、専用コイルの個数を減じる
ことができる。曲げ加工中は、加熱装置と冷却装置との
間隔を一定に保つことにより、加熱幅一定での曲げ加工
が行われる。更に、必要に応じ９曲げ加工中においても
、加熱装置と冷却装置との相対位置を変化させ、加熱幅
を変化させながらの曲げ加工を行うことも可能である。In the apparatus of the present invention having the above configuration, the relative position between the heating device and the cooling device can be adjusted, so the heating width can be set by adjusting the relative position, and the number of dedicated coils can be reduced. During the bending process, by keeping the distance between the heating device and the cooling device constant, the bending process is performed with a constant heating width. Furthermore, it is also possible to perform the bending process while changing the heating width by changing the relative positions of the heating device and the cooling device even during the 9-bending process, if necessary.
これは特に小Ｒ曲げに有効である。This is particularly effective for small radius bends.
以下、その理由を説明する。The reason for this will be explained below.
増、減肉（塑性加工）の安定した定常曲げ部に対して、
定常曲げ部と直管部との境界部は塑性加工の変化域あり
、ジャバラが発生しやすい。これは明らかに。For stable bending parts with increasing and decreasing thickness (plastic working),
The boundary between the steady bending part and the straight pipe part has a changing area of plastic working, and bellows are likely to occur. This is obvious.
境界部の加熱幅に対する細長比が、定常曲げ部のそれに
対して大きいためであり、その差は増肉の大きくなる小
Ｒ曲げ程大きくなる。小Ｒ曲げが形状的に困難になる一
つの理由でもある。これを解決するには、境界部の加熱
幅を金属管の増肉率に応じて調整すべきであり、具体的
には１曲げ位置が直管部から定常曲げ部に移動する際に
は加熱幅を徐々に増加させ、定常曲げ部では一定幅に保
ち、定常曲げ部の終りから直管部に到る部分では加熱幅
を徐々に減少させることが望ましい。This is because the slenderness ratio to the heating width of the boundary portion is larger than that of the steady bending portion, and the difference becomes larger as the thickness increases in small radius bending. This is also one of the reasons why small radius bending is difficult due to the shape. To solve this problem, the heating width at the boundary should be adjusted according to the thickness increase rate of the metal pipe. Specifically, when the bending position moves from the straight pipe part to the steady bending part, the heating width should be adjusted according to the thickness increase rate of the metal pipe. It is desirable to gradually increase the width, keep it constant in the steady bending section, and gradually decrease the heating width in the portion from the end of the steady bending section to the straight pipe section.
このような加工中における加熱幅の調整は１本発明装置
において実現出来る。Such adjustment of the heating width during processing can be realized using the apparatus of the present invention.
以下１本発明の実施例を図面を参照して説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例の概略構成を示す図であり。FIG. 1 is a diagram showing a schematic configuration of an embodiment of the present invention.
図中１は曲げ加工すべき金属管、２は曲げ加工すべき金
属管１を局部的に且つ環状に加熱する加熱装置１例えば
誘導加熱コイル、３は加熱装置２とは別個に設けられ、
金属管１を局部的に且つ環状に冷却する冷却装置、４は
金属管１の先端を把持し、支点０を中心として旋回可能
な旋回アーム、５は金属管１を把持するクランプ、６は
クランプ５を金属管１の長手方向に移動させる油圧シリ
ンダである。油圧シリンダ６にはサーボ弁７を介して油
圧源（図示せず）が接続されており。In the figure, 1 is a metal tube to be bent, 2 is a heating device 1, such as an induction heating coil, which locally and annularly heats the metal tube 1 to be bent, and 3 is provided separately from the heating device 2.
A cooling device that locally and annularly cools the metal tube 1; 4 is a swing arm that grips the tip of the metal tube 1 and can rotate around the fulcrum 0; 5 is a clamp that grips the metal tube 1; 6 is a clamp 5 in the longitudinal direction of the metal tube 1. A hydraulic power source (not shown) is connected to the hydraulic cylinder 6 via a servo valve 7.
サーボ弁７には操作用のパルスモータ８が設けられてい
る。パルスモータ８はモータ用電源装置９に接続され、
モータ用電源装置９はコントローラ１０で制御される。The servo valve 7 is provided with a pulse motor 8 for operation. The pulse motor 8 is connected to a motor power supply 9,
The motor power supply device 9 is controlled by a controller 10.
クランプ５．油圧シリンダ６等は金属管１を曲げ加工の
ために管長手方向に前進させる管送り機構を構成する。Clamp 5. The hydraulic cylinder 6 and the like constitute a tube feeding mechanism that advances the metal tube 1 in the tube longitudinal direction for bending.
加熱装置２は金属管１の内部に配置されており、金属管
１の後端より挿入された支持棒１２に保持されている。The heating device 2 is disposed inside the metal tube 1 and is held by a support rod 12 inserted from the rear end of the metal tube 1.
支持棒１２はトランス１３に保持され、トランス１３は
金属管１の長手方向に移動可能に配置されている。トラ
ンス１３の近傍には、金属管１の長手方向に平行なねじ
軸１４が定位置で回転可能に設けられ。The support rod 12 is held by a transformer 13, and the transformer 13 is arranged so as to be movable in the longitudinal direction of the metal tube 1. A screw shaft 14 parallel to the longitudinal direction of the metal tube 1 is rotatably provided near the transformer 13 at a fixed position.
このねじ軸１４には、トランス１３のアーム１５に保持
されたナンドが噛み合っている。従って、ねじ軸１４の
回転により、トランス１３及びそれに支持した加熱装置
２が金属管１の長手方向に移動する。ねし軸１４には駆
動用の直流モータ１６が接続され、直流モータ１６は駆
動電源１７に接続されている。この駆動電源１７もコン
トローラ１０で制御される。更に、直流モータ１６には
位置制御のための、タコジェネレータ１８、パルスジェ
ネレータ１９が接続され、これらの出力信号は駆動電源
１７．コン１〜ローラ１０に送られている。これらのね
じ軸１４．直流モータ１６等は。A NAND held by an arm 15 of the transformer 13 is engaged with this screw shaft 14. Therefore, the rotation of the screw shaft 14 causes the transformer 13 and the heating device 2 supported thereto to move in the longitudinal direction of the metal tube 1. A driving DC motor 16 is connected to the screw shaft 14, and the DC motor 16 is connected to a driving power source 17. This drive power source 17 is also controlled by the controller 10. Furthermore, a tacho generator 18 and a pulse generator 19 are connected to the DC motor 16 for position control, and their output signals are supplied to a drive power source 17 . It is sent to controllers 1 to 10. These screw shafts 14. DC motor 16 etc.
加熱袋Ｗ２を金属管１の長手方向に移動させる第一駆動
機構を構成する。A first drive mechanism that moves the heating bag W2 in the longitudinal direction of the metal tube 1 is configured.
冷却装置３は金属管１の外側に配置されており、金属管
１の長手方向に平行に移動可能な支持体２１に保持され
ている。この支持体２１の近傍にもねじ軸２２゜駆動用
直流モータ２３が設けられ、支持体２１のアーム２４が
保持したナンドがねじ軸２２に噛み合っている。かくし
て、ねじ軸２２の回転により冷却装置３は金属管１の長
手方向に移動する。即ち、ねじ軸２２゜直流モータ２３
等は冷却装置３を金属管１の、長手方向に移動させる第
二駆動機構を構成する。なお、この直流モータ２３にも
、駆動用電源２６．タコジェネレータ２７．パルスジェ
ネレータ２８等が接続されている。The cooling device 3 is arranged outside the metal tube 1 and is held by a support 21 that is movable in parallel to the longitudinal direction of the metal tube 1. A DC motor 23 for driving the screw shaft 22° is also provided near the support 21, and the NAND held by the arm 24 of the support 21 is engaged with the screw shaft 22. Thus, the rotation of the screw shaft 22 causes the cooling device 3 to move in the longitudinal direction of the metal tube 1. That is, screw shaft 22° DC motor 23
etc. constitute a second drive mechanism for moving the cooling device 3 in the longitudinal direction of the metal tube 1. Note that this DC motor 23 also has a driving power source 26. Tacho generator27. A pulse generator 28 and the like are connected.
次に、上記装置による曲げ加工動作を説明する。まず、
第２図において、加熱装置２と冷却装置３との管長手方
向の相対位置、具体的には加熱装置２の加熱域と冷却装
置３の冷却水吹付位Ｍ３Ａとの相対位置を。Next, the bending operation performed by the above apparatus will be explained. first,
In FIG. 2, the relative positions of the heating device 2 and the cooling device 3 in the pipe longitudinal direction, specifically, the relative positions of the heating area of the heating device 2 and the cooling water spraying position M3A of the cooling device 3 are shown.
所望の加熱幅が得られる位置に設定する。この設定は。Set at a position that provides the desired heating width. This setting is.
直流モータ１６又は２３を回転させることにより、容易
に行うことができる。また、この時、第３Ａ図に示すよ
うに、加熱装置２を旋回アーム４の支点Ｏを通り金属管
１の長手方向に直角な軸線Ｙ−Ｙよりも右に少し離れた
位置とする。位置設定が終了すると加熱装置２による加
熱及び冷却装置３による冷却を開始し、同時に油圧シリ
ンダ６を作動させて金属管１を第１図及び第３Ａ図で右
方向に移動させる。この移動により。This can be easily done by rotating the DC motor 16 or 23. Further, at this time, as shown in FIG. 3A, the heating device 2 is placed at a position slightly to the right of the axis YY passing through the fulcrum O of the swing arm 4 and perpendicular to the longitudinal direction of the metal tube 1. When the position setting is completed, heating by the heating device 2 and cooling by the cooling device 3 are started, and at the same time, the hydraulic cylinder 6 is operated to move the metal tube 1 to the right in FIGS. 1 and 3A. Due to this move.
旋回アーム４が支点Ｏを中心として旋回し、金属管１に
曲げモーメントを付与し、金属管１を曲げ加工する。The swing arm 4 swings around the fulcrum O, applies a bending moment to the metal tube 1, and bends the metal tube 1.
この時、同時に加熱装置２と冷却装置３とを同期させて
第３Ａ図の左方向に移動させ、加熱装置２が第３Ｂ図に
示すように軸線Ｙ−Ｙに達すると、その後は、その位置
に停止させて曲げ加工を継続する。曲げ加工を′ｍ続し
、定常曲げ部の終端が近付くと、再び加熱装置２と冷却
装置３とを同期させて第３Ｂ図の左方向に移動させ、第
３Ｃ図の状態で曲げ加工を終了する。以上で１回の曲げ
加工が終了する。At this time, the heating device 2 and the cooling device 3 are simultaneously moved to the left in FIG. 3A, and when the heating device 2 reaches the axis Y-Y as shown in FIG. to continue bending. The bending process continues for 'm, and when the end of the steady bending section approaches, the heating device 2 and the cooling device 3 are synchronized again and moved to the left in Fig. 3B, and the bending process is completed in the state shown in Fig. 3C. do. With this, one bending process is completed.
以上の曲げ加工動作において２曲げ開始時及び曲げ終了
時に加熱装置２及び冷却装置３を移動させたのは。In the above bending operation, the heating device 2 and the cooling device 3 were moved at the beginning and end of bending.
曲げ加工位置を旋回アーム４の支点に対して移動させる
ことにより９曲げ半径を直管部から定常曲げ部にかけて
徐々に変化させる為であり、この結果１曲げ角に対する
曲げ半径は第４図のグラフに示すようになる。This is to gradually change the bending radius from the straight pipe section to the steady bending section by moving the bending position relative to the fulcrum of the swing arm 4. As a result, the bending radius for one bending angle is as shown in the graph in Figure 4. It becomes as shown in .
このような曲げ半径の変化を与えることにより、直管部
と定常曲げ部との境界部での急激な増肉が防止され。By changing the bending radius in this manner, rapid thickening at the boundary between the straight pipe section and the steady bending section is prevented.
滑らかな曲げ加工が可能となる。また、上記実施例では
、加熱装置２と冷却装置３とが同期して移動したため、
加熱幅は加工中常に一定に保たれる。Smooth bending becomes possible. Further, in the above embodiment, since the heating device 2 and the cooling device 3 moved synchronously,
The heating width is always kept constant during processing.
第５図は上記装置による曲げ加工の別の方法を示すグラ
フである。この場合にも１曲げ開始時及び曲げ終了時に
加熱装置２．冷却装置３を移動させて曲げ半径を変化さ
せているが、冷却装置３の移動速度は加熱装置２と同速
度とせず、異ならせ、加熱幅が曲げ開始時には徐々に増
加し１曲げ終了時には徐々に減少するようにしている。FIG. 5 is a graph showing another method of bending using the above device. In this case, heating device 2 is also used at the beginning and end of bending. The bending radius is changed by moving the cooling device 3, but the moving speed of the cooling device 3 is not the same as that of the heating device 2, but is made different, so that the heating width gradually increases at the start of bending and gradually increases at the end of one bend. We are trying to reduce it to .
これにより２曲げ開始時或いは曲げ終了時の増肉率の少
ない時に過大な曲げ変形が生じることを防止することが
できる。第５図に示す方法は、増肉率の大きい小Ｒ曲げ
に極めて好適であり、この方法により曲げ半径Ｒが、１
．５Ｄ〜ＬＤ（Ｄは金属管外径）の小Ｒ曲げが可能とな
る。This can prevent excessive bending deformation from occurring when the rate of increase in thickness is small at the start of second bending or at the end of bending. The method shown in FIG. 5 is extremely suitable for small radius bending with a large thickness increase rate.
．． Small radius bending of 5D to LD (D is the outer diameter of the metal tube) is possible.
なお、上記実施例はいずれも、加熱装置２及び冷却装置
３を曲げ開始時及び曲げ終了時に移動させたが。In addition, in each of the above embodiments, the heating device 2 and the cooling device 3 were moved at the start of bending and at the end of bending.
曲げ半径或いは曲げ管の種類によっては、移動させる必
要がなく、常に定位置に固定したままで曲げ加工を行っ
てもよい。その場合には１例えば、加熱装置２を移動さ
せるためのねじ軸１４．直流モータ１６等の第一駆動機
構を省略し、冷却装置用の駆動機構のみを設け、加熱装
置２と冷却装置３との相対位置を調整しろるようにして
もよい。更に、上記実施例は、金属管１をクランプ５で
把持し油圧シリンダ６で移動させることにより、加熱装
置２及び冷却装置３を金属管１の長手方向に相対的に移
動させる形式のものであるが、木発明はこの形式に限ら
ず、金属管１を移動しないように固定しておき、加熱装
置２．冷却装置３及び旋回アーム４を金属管１の長手方
向に移動させて曲げ加工を行う加工方式に適用すること
も可能である。Depending on the bending radius or the type of bending tube, there is no need to move it, and the bending process may be performed while it is always fixed at a fixed position. In that case, 1, for example, a screw shaft 14 for moving the heating device 2. The first drive mechanism such as the DC motor 16 may be omitted, and only a drive mechanism for the cooling device may be provided so that the relative positions of the heating device 2 and the cooling device 3 can be adjusted. Further, in the above embodiment, the heating device 2 and the cooling device 3 are relatively moved in the longitudinal direction of the metal tube 1 by gripping the metal tube 1 with a clamp 5 and moving it with a hydraulic cylinder 6. However, the wooden invention is not limited to this type; the metal tube 1 is fixed so as not to move, and the heating device 2. It is also possible to apply the present invention to a processing method in which the cooling device 3 and the swing arm 4 are moved in the longitudinal direction of the metal tube 1 to perform bending.
また、上記実施例では加熱装置２を管内側に配置し。Further, in the above embodiment, the heating device 2 is placed inside the tube.
冷却装置３を管外側に配置したが、加熱装置、冷却装置
の配列はこの場合に限らず、第６Ａ図に示すように加熱
袋Ｍ２を管外側に、冷却装置３を管内側に配置するとか
、第６Ｂ図、第６Ｃ図に示すように加熱装置２゜冷却装
置３をともに管外側に、或いは管内側に配置しても差し
支えない。Although the cooling device 3 is placed on the outside of the tube, the arrangement of the heating device and the cooling device is not limited to this case, and the heating bag M2 may be placed on the outside of the tube and the cooling device 3 on the inside of the tube as shown in FIG. 6A. , 6B, and 6C, both the heating device 2 and the cooling device 3 may be placed outside the tube or inside the tube.
以上に説明したように１本発明の曲げ加工装置では。 As explained above, in the bending apparatus of the present invention.
加熱装置と冷却装置とを一体構造とせず、別部品とし。The heating device and cooling device are not integrated, but are separate parts.
且つ両者の相対位置を調整可能としたので１曲げ加工す
る金属管の種類２曲げ半径、加工速度等に応じて両者間
を調整することにより、加熱幅を任意に設定できる。こ
のため、従来のように、多数の専用コイルを用意してお
く必要がなく、設備費を削減することができ。Moreover, since the relative position between the two can be adjusted, the heating width can be arbitrarily set by adjusting the distance between the two according to the type of metal tube to be bent, the bending radius, the processing speed, etc. Therefore, there is no need to prepare a large number of dedicated coils as in the past, and equipment costs can be reduced.
しかも、専用コイルの取替作業があまり必要ないので。Moreover, there is no need to replace the special coil.
生産性を向上することができるという効果が得られる。The effect is that productivity can be improved.
更に、必要に応じ１曲げ加工中においても、加熱装置と
冷却装置との間隔を調整することが可能であり、このた
め２曲げ加工中の加熱幅を調整することにより。Furthermore, it is possible to adjust the distance between the heating device and the cooling device even during the first bending process, if necessary, by adjusting the heating width during the second bending process.
ジャバラの発生しない良好な曲げ加工が可能となり。This enables good bending without bellows.
特に、１．５Ｄ以下の小Ｒ曲げに極めて好適である。In particular, it is extremely suitable for small radius bending of 1.5D or less.
第１図は本発明の一実施例の概略構成図、第２図は加熱
装置２と冷却装置３の位置関係を示す部分断面側面図、
第３Ａ図、第３Ｂ図、第３Ｃ図は上記実施例における曲
げ加工の状態を説明する平面図、第４図はこの曲げ加工
における曲げ角度と曲げ半径、加熱幅との関係を示すグ
ラフ、第５図は他の実施例における曲げ角度と曲げ半径
、加熱幅等との関係を示すグラフ、第６Ａ図、第６Ｂ図
、第６Ｃ図はそれぞれ他の実施例を示す第２図と同様な
部分断面側面図である。FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, FIG. 2 is a partially sectional side view showing the positional relationship between a heating device 2 and a cooling device 3,
3A, 3B, and 3C are plan views explaining the state of bending in the above embodiment, FIG. 4 is a graph showing the relationship between the bending angle, bending radius, and heating width in this bending process, and FIG. Fig. 5 is a graph showing the relationship between bending angle, bending radius, heating width, etc. in another embodiment, and Figs. 6A, 6B, and 6C are similar parts to Fig. 2 showing other embodiments. FIG. 3 is a cross-sectional side view.
Claims (4)
する加熱装置と、該加熱装置とは別個に設けられ、金属
管を局部的に且つ環状に冷却する冷却装置と、前記加熱
装置及び冷却装置を金属管の長手方向に相対的に移動さ
せる駆動装置と、前記金属管に曲げモーメントを付与す
る旋回アームとを具備し、前記駆動装置が、少なくとも
前記加熱装置と冷却装置の一方を他方に対して移動させ
る駆動機構を有していることを特徴とする金属管の曲げ
加工装置。(1) A heating device that locally and annularly heats the metal tube to be bent; a cooling device that is provided separately from the heating device and that cools the metal tube locally and annularly; and the heating device and a drive device that relatively moves the cooling device in the longitudinal direction of the metal tube, and a swing arm that applies a bending moment to the metal tube, and the drive device controls at least one of the heating device and the cooling device. A metal tube bending device characterized by having a drive mechanism that moves the metal tube relative to the other.
、同じ側に配置されていることを特徴とする特許請求の
範囲第１項記載の金属管の曲げ加工装置。(2) The metal tube bending apparatus according to claim 1, wherein the heating device and the cooling device are arranged on the same side with respect to the tube wall of the metal tube.
んで一方が外側に、他方が内側に配置されていることを
特徴とする特許請求の範囲第１項記載の金属管の曲げ加
工装置。(3) The metal tube according to claim 1, wherein the heating device and the cooling device are disposed on both sides of the tube wall of the metal tube, one on the outside and the other on the inside. Bending equipment.
せる管送り機構と、前記加熱装置を金属管の長手方向に
移動させる第一駆動機構と、前記冷却装置を金属管の長
手方向に移動させる第二駆動機構を有することを特徴と
する特許請求の範囲第１項から第３項のいずれか１項に
記載の金属管の曲げ加工装置。(4) The drive device includes a tube feeding mechanism that moves the metal tube in the longitudinal direction, a first drive mechanism that moves the heating device in the longitudinal direction of the metal tube, and a first drive mechanism that moves the cooling device in the longitudinal direction of the metal tube. The metal tube bending device according to any one of claims 1 to 3, characterized by having a second driving mechanism for moving the metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP798786A JPS62168617A (en) | 1986-01-20 | 1986-01-20 | Bending device for metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP798786A JPS62168617A (en) | 1986-01-20 | 1986-01-20 | Bending device for metal pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62168617A true JPS62168617A (en) | 1987-07-24 |
Family
ID=11680772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP798786A Pending JPS62168617A (en) | 1986-01-20 | 1986-01-20 | Bending device for metal pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62168617A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01131688A (en) * | 1987-11-18 | 1989-05-24 | Sankyo Kk | Variable prize-winning means in pinball machine |
| JP2015085357A (en) * | 2013-10-31 | 2015-05-07 | 第一高周波工業株式会社 | Bending apparatus for metal pipe, method of producing meandering pipe, and meandering pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617020A (en) * | 1984-06-20 | 1986-01-13 | Dai Ichi High Frequency Co Ltd | Production of heat treated bended tube with straight tube part |
| JPS617019A (en) * | 1984-06-20 | 1986-01-13 | Dai Ichi High Frequency Co Ltd | Method and device for bending work and heat treatment of metallic pipe |
-
1986
- 1986-01-20 JP JP798786A patent/JPS62168617A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617020A (en) * | 1984-06-20 | 1986-01-13 | Dai Ichi High Frequency Co Ltd | Production of heat treated bended tube with straight tube part |
| JPS617019A (en) * | 1984-06-20 | 1986-01-13 | Dai Ichi High Frequency Co Ltd | Method and device for bending work and heat treatment of metallic pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01131688A (en) * | 1987-11-18 | 1989-05-24 | Sankyo Kk | Variable prize-winning means in pinball machine |
| JP2015085357A (en) * | 2013-10-31 | 2015-05-07 | 第一高周波工業株式会社 | Bending apparatus for metal pipe, method of producing meandering pipe, and meandering pipe |
| WO2015064047A1 (en) * | 2013-10-31 | 2015-05-07 | 第一高周波工業株式会社 | Metal pipe bending device, meandering pipe manufacturing method and meandering pipe |
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