JPS60130422A - Steel pipe correcting machine - Google Patents

Steel pipe correcting machine

Info

Publication number
JPS60130422A
JPS60130422A JP24074083A JP24074083A JPS60130422A JP S60130422 A JPS60130422 A JP S60130422A JP 24074083 A JP24074083 A JP 24074083A JP 24074083 A JP24074083 A JP 24074083A JP S60130422 A JPS60130422 A JP S60130422A
Authority
JP
Japan
Prior art keywords
steel pipe
lower rolls
center
pipe
roll
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
Application number
JP24074083A
Other languages
Japanese (ja)
Inventor
Yukio Yoshida
幸雄 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kurimoto Ltd
Kurimoto Iron Works Ltd
Original Assignee
Kurimoto Ltd
Kurimoto Iron Works Ltd
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 Kurimoto Ltd, Kurimoto Iron Works Ltd filed Critical Kurimoto Ltd
Priority to JP24074083A priority Critical patent/JPS60130422A/en
Publication of JPS60130422A publication Critical patent/JPS60130422A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE:To enhance efficiently the out of roundness of a pipe by enabling an upper die of columnar body, whose outer circumference of cross section consists of the combination of a circular arcs and straight lines to move independently in the horizontal and vertical directions while maintaining the relation parallel in three dimensions to the axis of a lower roll. CONSTITUTION:Two lower rolls 12, 13 attached parallelly to a base body are rotated in the same direction and at the same speed by driving a motor. A steel pipe 14 is rotated by rotating the lower rolls 12, 13 to set the center line of its insufficient bending part 141 at the position approximately equivalent to the center between the lower rolls 12, 13. Next, an upper die 11 is brought into contact with the center line of the insufficient bending part 141 of a steel plate to press it by lowering the die 11. The curvature of the central part of part 141 is then corrected by providing a rolling down force to it with the aid of a hydraulic cylinder.

Description

【発明の詳細な説明】 本発明はベンディングロールマシンなどによって成形し
た鋼管、特に大口径の鋼管の真円度矯正機に関するもの
である。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a straightening machine for steel pipes formed by a bending roll machine or the like, particularly for large-diameter steel pipes.

従来、平板を押圧して断面円形の特に大口径鋼管を成形
加工する方法としてベンディングロールマシンが最も普
及しており、1基のマシンによって異なる管径の鋼管を
比較的能率よく製造できるため汎用性が高く評価されて
種々の型式が開発され実用に供されている。しかし大別
してピラミッド型又はピンチ型に部分される種々の型式
の何れのマシンであっても、目的とする鋼管の直径より
も小さい直径である上ロールと下ロールとで平板を挟圧
して板曲げ加工をする本質に変わりはない。
Traditionally, bending roll machines have been the most popular method for forming large-diameter steel pipes with a circular cross section by pressing a flat plate, and are versatile because steel pipes of different diameters can be manufactured relatively efficiently using one machine. It has been highly evaluated and various types have been developed and put into practical use. However, any of the various types of machines, which can be roughly divided into pyramid-shaped or pinch-shaped parts, can bend a flat plate by pinching it between upper rolls and lower rolls whose diameter is smaller than the diameter of the target steel pipe. The essence of processing remains the same.

そのため押圧作業上の種々のノウハウや制御手段を伴っ
ても、成形した鋼管が何れの断面においても、均等な真
円から成り立つことはきわめて困難である。すなわち任
意の断面で検査すると、真円であるべき断面のある部分
は曲げ不足のために曲率が大きく、正しい円弧より内部
へ後退し、ある部分は曲げ過ぎのため曲率が小さく正し
い円弧より外部へ膨出し、真円の仮想線を画くと、その
内外へ出入りする不均整な曲線によって構成されて了う
。このことは多品種少量生産に好適なベンディングロー
ルマシンの機構に基因する本質的な問題点である。
Therefore, even with various know-how and control means for pressing operations, it is extremely difficult for a formed steel pipe to have an even, perfect circle in any cross section. In other words, when inspecting an arbitrary cross section, a certain part of the cross section that should be a perfect circle has a large curvature due to insufficient bending and retreats inward from the correct arc, and a certain part has a small curvature due to excessive bending and moves outward from the correct arc. If you draw an imaginary line that bulges out and is a perfect circle, it will end up being composed of asymmetrical curves that go in and out of the line. This is an essential problem due to the mechanism of the bending roll machine, which is suitable for high-mix, low-volume production.

このため製作者は製品(鋼管)に課せられた仕様に基づ
き、真円度から垂離した部分を許容範囲内に拡縮するた
めいろいろの矯正手段を講じなければならなくなる。
For this reason, the manufacturer must take various corrective measures based on the specifications imposed on the product (steel pipe) in order to expand or contract the portion that is perpendicular to the roundness within the permissible range.

その手段の一つとして円弧の小さくなった範囲を鋼管外
部からガス焔などで加熱してこの部分を拡張しようとす
るものがある。しかし、この手段は加熱と冷却とのバラ
ンスを微妙に変えつつ、ある限られた範囲のみを変形し
ていくのであるから相当な熟練が必要であり、しかも管
全体として収縮する傾向にあり矯正手段として問題が残
る。
One method for this purpose is to expand the area where the arc has become smaller by heating it with a gas flame or the like from the outside of the steel pipe. However, this method requires considerable skill because it deforms only a limited area while delicately changing the balance between heating and cooling, and it also tends to shrink the entire tube. The problem remains.

さらに現場的な手段としては起重機などで鋼管を水平に
吊り上げ吊具を外して地上に水平に落下させてその機械
的衝撃力で矯正することもよく見られる。しかしこれも
微少な矯正ができないことは当然である。また鋼管の管
端だけが取付けの相手部材との関係で真円度を必要とす
る場合には、管端のみを上下型の間に挟持して油圧で矯
正し、順次円周各部に及ぶように鋼管の転勤と押圧とを
交互に繰り返す簡易な矯正機も既に使用されている。
Furthermore, as an on-site method, it is often seen that the steel pipe is hoisted horizontally using a hoist, the lifting device is removed, and the pipe is dropped horizontally to the ground, and the mechanical impact force is used to correct the problem. However, it is natural that this also cannot be used to make slight corrections. In addition, if only the pipe end of the steel pipe requires roundness in relation to the mating member, only the pipe end is held between the upper and lower molds and corrected using hydraulic pressure, so that each part of the circumference is successively corrected. A simple straightening machine that alternately repeats the transfer and pressing of steel pipes is already in use.

しかし、ボイラーなど熱交換器の管胴として製作する大
口径鋼管は管胴数ケ所に管板を装着するため全長に亘っ
て高い真円度を必要とするから前述の矯正機は不適当で
ある。
However, the straightening machine described above is not suitable for large-diameter steel pipes manufactured as tube bodies for heat exchangers such as boilers, which require high roundness over the entire length because tube sheets are attached to several locations on the tube body. .

また、所望の内径よりもやや縮寸して管体を成形しその
後、水圧をかけて全体を拡管する手段も実用化されてい
るが、巨大な設備による少品種大量生産の場合にのみ経
済的に成り立つ方法である。
In addition, methods have been put into practical use in which the pipe is formed by reducing its inner diameter slightly from the desired one, and then the entire pipe is expanded by applying water pressure, but this method is only economical in the case of mass production of a small number of products using huge equipment. This is a method that satisfies the following.

一方、ヘンディングロールマシンを利用して矯正する手
段もある。これは1個の上ロールと2個の下ロールとか
らなるベンディングロールマシンであって、上ロールが
下ロールとは別個に単独で廻転することができ、かつ単
独で下ロールと非対称な位置に水平移動することができ
る機種の場合、便宜的に作業現場において使用される方
法である。
On the other hand, there is also a means of straightening using a hending roll machine. This is a bending roll machine consisting of one upper roll and two lower rolls. For models that can move horizontally, this method is conveniently used at work sites.

この方法を第1図で説明すると、成形した鋼管(4)の
曲率の小さな曲げ過ぎ部分(図中、斜線で示す範囲とす
る)を、下ロール(2)、(3)の何れか一方に接触す
る位置まで移動し、次に上ロール(1)を水平移動およ
び垂直移動して、鋼片よりなるスペーサー(5)を鋼管
(4)との間で挟持するように占位させる。この状態で
上ロールを下に押下げると、押圧力はスペーサー(5)
の両端を通じて曲げ過ぎ部分に伝えられ小さい円弧部分
を拡大して鋼管全体として正しい円弧に矯正される。し
かし、この方法を採る場合、鋼管(4)の矯正を要する
部分はある範囲に亘る曲面であり、スペーサー(5)の
鋼管と当接する個所を次々に移動して矯正を受けなけれ
ばならないから、鋼管(4)を少しづつ回転する必要が
ある。そのときはこの回転のためスペーサー(5)の挟
持状態を解くからスペーサー(5)を改めて第1図に相
当する位置に挟み直さなければならない。
To explain this method with reference to Fig. 1, the over-bent portion of the formed steel pipe (4) with a small curvature (the shaded area in the figure) is placed on one of the lower rolls (2) and (3). The upper roll (1) is then moved horizontally and vertically to a position where the spacer (5) made of a steel piece is sandwiched between the spacer (5) and the steel pipe (4). When the upper roll is pushed down in this state, the pressing force is applied to the spacer (5)
It is transmitted to the over-bent part through both ends of the pipe, enlarges the small arc part, and corrects the steel pipe as a whole to the correct arc. However, when this method is adopted, the part of the steel pipe (4) that requires correction is a curved surface over a certain range, and the parts of the spacer (5) that contact the steel pipe must be moved one after another to undergo correction. It is necessary to rotate the steel pipe (4) little by little. At that time, this rotation causes the spacer (5) to be released from the clamped state, so the spacer (5) must be clamped again to the position corresponding to FIG. 1.

また、曲げ不足部分の範囲と不足の程度は前工程の状態
によって全くまちまちに異なっており、1本の鋼管に部
分的な曲げ過ぎ、曲げ不足の範囲が無秩序に散在する矯
正範囲の広挟に対しては、スペーサー(5)の幅(B)
を異にする数種のものをあらかじめ用意してその都度差
し替えなければならないし、管端近傍の矯正はともかく
として、長尺管中央付近の矯正は著しい困難を伴い、作
業上の安全性も保証し難いという問題がある。
In addition, the range of underbending and the degree of underbending vary depending on the state of the previous process, and the straightening range is wide and narrow, with partial overbending and underbending scattered randomly in one steel pipe. For the width (B) of the spacer (5)
It is necessary to prepare several types of different types of pipes in advance and replace them each time, and apart from straightening near the pipe ends, straightening near the center of a long pipe is extremely difficult, and operational safety cannot be guaranteed. The problem is that it is difficult.

この発明は、以上の問題点を解決して1本の長尺鋼管に
部分的な曲げ不足、曲げ過ぎ範囲が不規則に散在する場
合、簡単な作業で効率よく、かつ安全に矯正して真円度
を高める矯正機の提供を目的とする。
This invention solves the above problems and, when a long steel pipe is irregularly scattered with partial insufficient bending or overbending, it can be corrected efficiently and safely with simple work. The purpose is to provide a straightening machine that improves roundness.

この目的を達成するため、この発明に係る鋼管矯正機は
、基台に回転自在に並行して取付けた2個の下ロールの
上方に、断面外周が円弧と直線の組合せからなる柱状体
の上型を下ロールの軸芯と平行に配設し、核上型は独立
して回転自在でありかつ下ロールの軸芯に対し立体的平
行関係を保ちつつ水平移動と垂直移動とが夫々独立して
可能であることを特徴とする。
In order to achieve this object, the steel pipe straightening machine according to the present invention has a columnar body whose cross-sectional outer periphery is a combination of circular arcs and straight lines. The mold is arranged parallel to the axis of the lower roll, and the upper core mold is independently rotatable, and horizontal movement and vertical movement are independent of each other while maintaining a three-dimensional parallel relationship to the axis of the lower roll. The feature is that it is possible to

この発明は、前記の構成よりなるから次の作用を果たす
ことができる。
Since the present invention has the above-described configuration, it can achieve the following effects.

第2図は、この発明によって鋼管の曲げ不足部分を矯正
する作用を説明する正面概念図である。
FIG. 2 is a conceptual front view illustrating the effect of correcting the insufficiently bent portion of a steel pipe according to the present invention.

平行して基体に取付けられた2個の下ロール(12)お
よび(13)は駆動モーターによって同一方向へ等速回
転する。第2図Aは下ロール(12)および(13)に
亘って加工した鋼管(14)を載置し、下ロールの回転
によって鋼管(14)を回転して目的とする曲げ不足部
分(141)の中心線が下ロール(12)、(13)間
のほぼ中央に相当するように占位させた第一段階を示す
。図中(11)は2個の下ロールの上方に下ロールの軸
芯と平行に配設した上型であって、その断面が直線であ
る平面部(111)とその断面が円弧である曲面部(1
12)の組合わせによって外周の輪郭を形成する柱状体
である。図の場合は一例として円柱に4面の幅の異なる
平面部(Fl、F2.F3.F4)で円柱を切截した多
面柱状体を示したがこれらの平面と曲面の組合わせは矯
正対象の鋼管の形状、寸法、前工程(曲げ加工)の精度
、仕様精度などによって任意に選ぶことができる。
Two lower rolls (12) and (13) attached to the base in parallel are rotated at a constant speed in the same direction by a drive motor. In Fig. 2A, the processed steel pipe (14) is placed across the lower rolls (12) and (13), and the steel pipe (14) is rotated by the rotation of the lower roll to achieve the desired insufficient bending part (141). The first stage is shown in which the center line of the roll corresponds to approximately the center between the lower rolls (12) and (13). In the figure, (11) is an upper mold disposed above two lower rolls in parallel with the axis of the lower rolls, with a flat part (111) whose cross section is a straight line and a curved part whose cross section is an arc. Part (1
12) It is a columnar body that forms an outer peripheral outline by a combination of. In the case of the figure, as an example, a polyhedral columnar body is shown, which is a cylinder cut by plane parts (Fl, F2.F3.F4) with different widths on four sides, but the combination of these planes and curved surfaces is difficult to correct. It can be selected arbitrarily depending on the shape and dimensions of the steel pipe, the accuracy of the previous process (bending), the accuracy of specifications, etc.

第2図Bは作業の第二段階として上型(11)を独立し
た機構によって下方へ移動し鋼板の曲げ不足部分(14
1)の中心線に当接して押圧する状態を示す。上型の当
接するのは曲面部(112)の何れかのほぼ中心線であ
る。この状態で上型(11)に装着している押下機構、
たとえば油圧シリンダーによる圧下刃を加えると、鋼管
の曲げ不足部分(141)の中心部分の曲率が矯正され
る。実作業では1回の矯正操作で(141)の中心部分
が矯正されてもその両端に小範囲の曲げ不足部分(14
11)(1412)が残ることもあるから、それが仕様
の許容を超えるときは一旦上型(]1)を上昇して押圧
力を解き下ロール(12)、(13)を回転して曲げ不
足部分(1411)又は(1412)の中心を第2図A
の(141)に相当するように位置替えして再び圧下を
繰返して漸次正確な真円度を得ることができる。
Figure 2B shows that in the second stage of the work, the upper mold (11) is moved downward by an independent mechanism, and the insufficient bending part (14) of the steel plate is moved downward.
1) shows the state of contacting and pressing the center line. The upper mold abuts approximately the center line of any of the curved surface portions (112). The push-down mechanism attached to the upper die (11) in this state,
For example, by applying a reduction blade using a hydraulic cylinder, the curvature of the central portion of the insufficiently bent portion (141) of the steel pipe is corrected. In actual work, even if the center part of (141) is corrected in one straightening operation, there will be small areas of insufficient bending (141) at both ends.
11) (1412) may remain, so if it exceeds the specification tolerance, lift the upper mold (]1) to release the pressing force and rotate the lower rolls (12) and (13) to bend it. Center the missing part (1411) or (1412) in Figure 2A
By changing the position to correspond to (141) and repeating the rolling process again, it is possible to gradually obtain accurate roundness.

第3図はこの発明が鋼管(14)の曲げ過ぎ部分(14
2)を矯正する作用を説明する正面概念図である。まづ
第3図Aは2個の下ロール(12)と(13)との廻転
によって鋼管(14)の曲げ過ぎ部分(142)の中心
線をたとえば一方の下ローラ(12)に当接するように
鋼管(14)を回転する状態を示す。当接の位置は図示
の通り、鋼管(14)の中心点(軸芯)と下ローラーの
中心点(軸芯)を結ぶ線上に曲げ過ぎ部分(142)の
中心線が一致するように定める。
FIG. 3 shows that the present invention can be applied to an over-bent portion (14) of a steel pipe (14).
FIG. 2 is a front conceptual diagram illustrating the action of correcting 2). First, in FIG. 3A, the rotation of the two lower rolls (12) and (13) brings the center line of the over-bent portion (142) of the steel pipe (14) into contact with, for example, one of the lower rollers (12). 2 shows the state in which the steel pipe (14) is rotated. As shown in the figure, the abutting position is determined so that the center line of the over-bent portion (142) coincides with the line connecting the center point (axis) of the steel pipe (14) and the center point (axis) of the lower roller.

第3図Bは、第3図Aの状態から上型(11)をそれぞ
れ独立した駆動力によって水平にX、垂直にYだけ移動
し、下ロール(12)との間で曲げ過ぎ部分(142)
の中心部を挟持するように当接した状態を示す。上型の
当接する部分は第2図とは異なり、上型(11)の平面
部(111)の内の適当な幅を有する部分、たとえば平
面部(Fl)である。いずれの平面部(Fl〜F4)を
選ぶかは曲げ過ぎ部分(142)の幅によって定めるこ
とかできる。第3図Bの状態では鋼管(14)の中心(
C1)−上型(11)の中心(C2)−上型(11)の
平面部(111”)の中心(C3)→鋼管(14)の曲
げ過ぎ部分(142)の中心(C4)−下ロール(12
)の中心(C5)がすべて一本の直線上に位置する関係
となる。この状態で上型(11)をたとえば油圧シリン
ダーによって押圧することによって曲げ過ぎ部分(14
2)はその中心から曲率を矯正されて真円に近づく。一
度の矯正で不充分なときは第2図の曲げ不足の場合と同
様に鋼管(14)を移転して微調整を加え、高い真円度
を得るまで作業を繰返す。
FIG. 3B shows that the upper mold (11) is moved horizontally by X and vertically by Y from the state of FIG. 3A, and the over-bend portion (142 )
This shows the state in which they are in contact with each other so as to sandwich the center of the two. The part that the upper mold comes into contact with is different from that shown in FIG. 2, and is a part of the flat part (111) of the upper mold (11) that has an appropriate width, for example, the flat part (Fl). Which plane portion (Fl to F4) to select can be determined by the width of the over-bent portion (142). In the state shown in Figure 3B, the center of the steel pipe (14) (
C1) - Center of the upper die (11) (C2) - Center of the flat part (111") of the upper die (11) (C3) -> Center of the excessively bent part (142) of the steel pipe (14) (C4) - Bottom Roll (12
) are all located on one straight line. In this state, the upper mold (11) is pressed by, for example, a hydraulic cylinder, so that the excessively bent portion (14) is
2) has its curvature corrected from its center and approaches a perfect circle. If one-time straightening is insufficient, the steel pipe (14) is relocated and finely adjusted in the same manner as in the case of insufficient bending in Fig. 2, and the work is repeated until a high degree of roundness is obtained.

次、にこの発明の実施例を図面に基づいて説明する。Next, embodiments of the present invention will be described based on the drawings.

第4図は、実施例の正面図、第5図は同じく側面図であ
る。基台(15)の上に2個の下ロール(12)及び(
13)が回転自在に平行に取付けられており、(16)
は両ロールを支承する下ロール軸受であって歯車(17
) 、減速tJll (1B>を介して下ロール駆動電
動機(19)の動力の伝達にあって2個の下ロール(1
2)、(13)が回転する。
FIG. 4 is a front view of the embodiment, and FIG. 5 is a side view. Two lower rolls (12) and (
13) are rotatably installed in parallel, and (16)
is the lower roll bearing that supports both rolls, and the gear (17
), deceleration tJll (1B>), the two lower rolls (1
2) and (13) rotate.

基台(15)の左右両端には下ロール軸受(16)をま
たいで門型枠(20)、(21)がそれぞれ立設し、こ
の門型枠(20)、(21)はそれぞれ昇降油圧シリン
ダー(22)を挟持し、この昇降油圧シリンダー(22
)は油圧ユニット(23)からの油圧に応じて門型枠(
20)、(21)内に上下に凹設したガイド溝に沿って
上型(11)を軸支する上型軸承(24)を自由に昇降
する。上型(24)は上型(11)O を回転自在に支承し、卜型駆動電動ill (25)が
下ロールとは独立した回転力を伝達する。この電動機は
所望の一点で静止して鋼管(14)を押圧しなければな
らないからブレーキ付のものが望ましい。
Gate frames (20) and (21) are erected at both left and right ends of the base (15), straddling the lower roll bearing (16), and these gate frames (20) and (21) are operated by hydraulic pressure for lifting and lowering, respectively. The cylinder (22) is sandwiched between the lift hydraulic cylinders (22).
) is installed in the gate form (
20), the upper mold bearing (24) which pivotally supports the upper mold (11) is freely raised and lowered along the guide groove recessed vertically in (21). The upper mold (24) rotatably supports the upper mold (11) O, and the electric mold drive ill (25) transmits rotational force independent of the lower roll. Since this electric motor must stand still at a desired point and press the steel pipe (14), it is desirable that the electric motor be equipped with a brake.

門型枠(20)、(21)の脚部(201>、(211
)には水平移動軸(26)が貫通しこの軸が基台(15
)の両側面に突出したフランジ(151)をも貫通する
ことによって門型枠と基台とを連結している。
Legs (201>, (211) of gate frames (20), (21)
) is penetrated by a horizontal movement axis (26), and this axis is connected to the base (15).
) The gate frame and the base are connected by passing through the flanges (151) projecting on both sides of the gate frame.

両者を貫通する水平移動軸(26)の両端にはキー溝(
261)を刻設し、それに対応する角状突起(152)
を基台のフランジ部(151)に突設する。
A keyway (
261) and a corresponding angular projection (152)
is provided protrudingly from the flange portion (151) of the base.

このキー溝(261> と角状突起(152)とが嵌合
することにより基台(15)と門型枠(20)、(21
)とは左右に滑動可能な状態で連結している。この水平
移動軸(26)の中央部分には雄ネジ部分(262)が
刻設され、これがうオームホイル(27)のボス孔内径
に螺刻した雌ネジと係合している。
By fitting this key groove (261> and the angular projection (152), the base (15) and the gate frame (20), (21
) are connected so that they can slide left and right. A male threaded portion (262) is formed in the center of the horizontal movement shaft (26), and this engages with a female thread threaded on the inner diameter of the boss hole of the ohmic foil (27).

ウオームホイル(27)は螺合するウオームギヤ(2B
) 、水平移動軸(29)を介して左右移動用電動機(
30)の回転力の伝達をうける。すなわち、1 上型(11)を挟着した門型枠(20)、(21)は基
台(15)に対して独立して左右に滑動して下ロール(
12)及び(13)との相対的位置を変えて所望の場所
に占位することができる。
The worm wheel (27) is screwed into the worm gear (2B).
), the electric motor for left and right movement (
30) receives the transmission of rotational force. In other words, 1. The gate frames (20) and (21) sandwiching the upper mold (11) slide left and right independently with respect to the base (15), and the lower roll (
12) and (13) can be changed to occupy a desired location.

その他、鋼管(14)を上型と下ロールとの間へ装入又
は離脱するときに一方の門型枠(20)を傾倒する傾倒
用油圧シリンダー装置(31) 、?’J倒時に片持ち
となる一ヒ型(11)を把持する一F型抑止装置(32
)など補助装置も具える必要がある。
In addition, a tilting hydraulic cylinder device (31) that tilts one gate frame (20) when loading or unloading the steel pipe (14) between the upper die and the lower roll. '1F type restraining device (32
) and other auxiliary equipment must also be provided.

この発明は、以上の構成および作用よりなるから1台の
矯正機によって1本の曲げ加工した鋼管の各所に不規則
に散在する曲げ不足部分又は曲げ過ぎ部分を最も効率的
に矯正して真円度を高める効果を得ることができる。し
かも、単に効率がよいだけでなく、その汎用性が広いか
ら上型(11)の断面の直線と曲げの組合わせを研究す
ることによって量産品であっても単一品であっても、そ
れぞれ最も適合した作業基準を計画することができる。
Since the present invention has the above-described configuration and operation, it is possible to most efficiently correct under-bent parts or over-bend parts that are irregularly scattered at various places in a single bent steel pipe using a single straightening machine, thereby making it perfectly round. You can get the effect of increasing the degree. Moreover, it is not only efficient but also has a wide range of versatility, so by researching the combination of straight lines and bends in the cross section of the upper mold (11), it is possible to make the most suitable for both mass-produced products and single products. Able to plan compliant work standards.

その他、この発明によれば鋼管の管端のみなら2 ず、長尺物の中央付近の矯正も最も安全性高く行えるし
、ガスによる加熱、落下、槌打ちなど従来のいかなる矯
正手段よりも作業環境が優れ、公害源から免れることが
できる、など特有の効果も派生する。
In addition, according to this invention, it is possible to straighten not only the ends of steel pipes, but also the center of long objects with the highest degree of safety, and the work environment is better than any conventional straightening methods such as gas heating, dropping, and hammering. It also has unique effects, such as being superior in water and being immune to pollution sources.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来法による矯正手段の一例を示す正面断面図
、第2図A、Bおよび第3図A、Bはこの発明の詳細な
説明する正面断面図、第4図はこの発明の実施例を示す
正面図、第5図は同じくその側面図。 111・・・上ロール、 (2)、(3)・・・下ロー
ル、(4)・・・In ’IF 、(5)・・・スペー
サー(11)・・・上型、 (111)・・・上型の平
面部、(112)・・・上型の曲面部、 (12)、(13)・・・下ロール、(14)・・・鋼
管、(141)、(1411)、(1412)・・・鋼
管の曲げ不足部分、 (142) ・・・鋼管の曲げ過ぎ部分、(15)・・
・基台、 (151)・・・基体のフランジ、3 (152)・・・角状突起、(16)・・・下ロール軸
受、(17)・・・歯車、 (18)・・・減速機、(
19)・・・下ロール駆動電動機、 (20)、(21)・・・門型枠、 (201)、(211)・・・門型枠の脚部、(22)
・・・昇降油圧シリンダー、 (23)・・・油圧ユニット、 (24)・・・上型軸受、(25)・・・上型駆動電動
機、゛(26)・・・水平移動軸、 (261)・・・水平移動軸のキー溝、(262)・・
・水平移動軸の雄ネジ部分、(27)・・・ウオームホ
イル、 (28)・・・ウオームギヤ、(29)・・・水平駆動
軸、(30)・・・左右移動用電動機、 (31)・・・傾斜用油圧シリンダー装置、(32)・
・・上型抑止装置。 出願人 株式会社 栗本鐵工所 代理人 弁理士 青野 順三 4
FIG. 1 is a front sectional view showing an example of a conventional correction means, FIGS. 2A, B and 3 A, B are front sectional views explaining the present invention in detail, and FIG. A front view showing an example, and FIG. 5 is a side view thereof. 111... Upper roll, (2), (3)... Lower roll, (4)... In 'IF, (5)... Spacer (11)... Upper mold, (111)... ...Flat part of the upper die, (112)...Curved surface part of the upper die, (12), (13)...Lower roll, (14)...Steel pipe, (141), (1411), ( 1412) ... Insufficient bending part of the steel pipe, (142) ... Overbending part of the steel pipe, (15)...
・Base, (151)...Base flange, 3 (152)...Square projection, (16)...Lower roll bearing, (17)...Gear, (18)...Reduction Machine, (
19)...lower roll drive motor, (20), (21)...gate frame, (201), (211)...legs of portal frame, (22)
...Elevating hydraulic cylinder, (23)...Hydraulic unit, (24)...Upper die bearing, (25)...Upper die drive motor, (26)...Horizontal movement axis, (261 )...Horizontal movement axis keyway, (262)...
- Male screw part of horizontal movement shaft, (27)...Worm wheel, (28)...Worm gear, (29)...Horizontal drive shaft, (30)...Left and right movement electric motor, (31) ... Hydraulic cylinder device for tilting, (32)
...Upper type restraint device. Applicant Kurimoto Iron Works Co., Ltd. Agent Patent Attorney Junzo Aono 4

Claims (1)

【特許請求の範囲】[Claims] 基台に回転自在に並行して取付けた2個の下ロールの上
方に、断面外周が円弧と直線の組合せからなる柱状体の
上型を該下ロールの軸芯と平行に配設し、該上型は独立
して回転自在でありかつ下ロールの軸芯に対して立体的
平行関係を保ちつつ水平移動と垂直移動とが夫々独立し
て可能であることを特徴とする鋼管矯正機。
Above two lower rolls that are rotatably attached to a base in parallel, a columnar upper mold whose cross-sectional outer periphery is a combination of circular arcs and straight lines is arranged parallel to the axis of the lower rolls. A steel pipe straightening machine characterized in that the upper mold is independently rotatable and can independently move horizontally and vertically while maintaining a three-dimensional parallel relationship with the axis of the lower roll.
JP24074083A 1983-12-19 1983-12-19 Steel pipe correcting machine Pending JPS60130422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24074083A JPS60130422A (en) 1983-12-19 1983-12-19 Steel pipe correcting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24074083A JPS60130422A (en) 1983-12-19 1983-12-19 Steel pipe correcting machine

Publications (1)

Publication Number Publication Date
JPS60130422A true JPS60130422A (en) 1985-07-11

Family

ID=17063989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24074083A Pending JPS60130422A (en) 1983-12-19 1983-12-19 Steel pipe correcting machine

Country Status (1)

Country Link
JP (1) JPS60130422A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102049435A (en) * 2010-10-30 2011-05-11 泰安市华泰锻压机械有限公司 Roll bending method and electrical control device for three-roll plate bending machine
CN104339124A (en) * 2013-08-05 2015-02-11 上海通华不锈钢压力容器工程有限公司 Multi-curvature forming method for stainless steel cylinder
WO2015027361A1 (en) * 2013-08-26 2015-03-05 南通超力卷板机制造有限公司 Straightening round process of numerical control straightening round machine
CN106424248A (en) * 2016-11-02 2017-02-22 天津那诺机械制造有限公司 Three-roller circle machining machine with trapezoidal threaded teeth
CN106944506A (en) * 2017-03-16 2017-07-14 中铁第勘察设计院集团有限公司 The horizontal self-contained corrugated culvert pipe type bender of four axles
CN111451332A (en) * 2019-12-20 2020-07-28 南通超力卷板机制造有限公司 Roundness correction method for cylinder formed by roll bending of three-roller plate bending machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102049435A (en) * 2010-10-30 2011-05-11 泰安市华泰锻压机械有限公司 Roll bending method and electrical control device for three-roll plate bending machine
CN104339124A (en) * 2013-08-05 2015-02-11 上海通华不锈钢压力容器工程有限公司 Multi-curvature forming method for stainless steel cylinder
WO2015027361A1 (en) * 2013-08-26 2015-03-05 南通超力卷板机制造有限公司 Straightening round process of numerical control straightening round machine
CN106424248A (en) * 2016-11-02 2017-02-22 天津那诺机械制造有限公司 Three-roller circle machining machine with trapezoidal threaded teeth
CN106944506A (en) * 2017-03-16 2017-07-14 中铁第勘察设计院集团有限公司 The horizontal self-contained corrugated culvert pipe type bender of four axles
CN111451332A (en) * 2019-12-20 2020-07-28 南通超力卷板机制造有限公司 Roundness correction method for cylinder formed by roll bending of three-roller plate bending machine

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