JP3209471B2 - Board camber straightening method and apparatus - Google Patents
Board camber straightening method and apparatusInfo
- Publication number
- JP3209471B2 JP3209471B2 JP21050493A JP21050493A JP3209471B2 JP 3209471 B2 JP3209471 B2 JP 3209471B2 JP 21050493 A JP21050493 A JP 21050493A JP 21050493 A JP21050493 A JP 21050493A JP 3209471 B2 JP3209471 B2 JP 3209471B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- camber
- pressing
- amount
- correction
- 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
Landscapes
- Straightening Metal Sheet-Like Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、板のキャンバ矯正方法
および装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for correcting camber of a board.
【０００２】[0002]
【従来の技術】一般に板のキャンバ矯正においては以下
のような方法が行われている。 （ａ）３点繰り返し曲げ方法 図６に示すように、板１０の一部をピンチローラ１１、
１２で挟んで長手方向に順次送るようにし、２個の圧下
装置１３、１４をキャンバ凹側に配設し、キャンバ凸側
に１個の圧下装置１５を配設して、順次キャンバ矯正を
行う。すなわち、板厚ｔ、板幅Ｗ、材料のヤング率Ｅ、
降伏応力σによって定まる圧下荷重Ｐを設定し、板１０
を順次搬送しながらキャンバ凹側の比較的近接した２点
を支持しその中央のキャンバ凸側の１点を圧下する３点
曲げを、板長手方向に多数回繰り返し、事後、キャンバ
量を測定し、測定値が設定許容値以内に入るまで板全長
を繰り返し３点曲げ矯正する。 （ｂ）フランジ付きレベラによる曲げ矯正方法。2. Description of the Related Art In general, the following method is used for camber correction of a board. (A) Three-point repetitive bending method As shown in FIG.
The two pressing devices 13 and 14 are disposed on the concave side of the camber, and one pressing device 15 is disposed on the convex side of the camber so as to sequentially perform camber correction. . That is, the sheet thickness t, the sheet width W, the Young's modulus E of the material,
The rolling load P determined by the yield stress σ is set,
The three-point bending that supports two relatively close points on the concave side of the camber while rolling down one point on the convex side of the center of the camber is repeated many times in the longitudinal direction of the plate while sequentially transporting the camber, and the camber amount is measured afterwards. The entire length of the sheet is repeatedly corrected at three points until the measured value falls within the set allowable value. (B) A straightening method using a leveler with a flange.
【０００３】図７（ａ）に側面図を、図７（ｂ）に平面
図を示すように、フランジ２２を交互に取付け、スラス
ト軸受２３を装着したレベラローラ２１のフランジによ
って曲げ矯正を行う方法で、板１０が狭幅材である場合
に用いられる。[0003] As shown in a side view in Fig. 7A and a plan view in Fig. 7B, a method in which the flanges 22 are alternately mounted and the straightening is performed by the flange of the leveler roller 21 to which the thrust bearing 23 is mounted. , Is used when the plate 10 is a narrow material.
【０００４】[0004]
【発明が解決しようとする課題】従来の３点繰り返し曲
げ方法では、以下のような問題があった。 （１）局所的なキャンバ矯正はできるが、板全長のキャ
ンバは１回では矯正できない。従って、作業効率が悪
い。 （２）３点曲げでは矯正に最適な均一な曲げモーメント
分布が得られない。また板折れが生ずる原因ともなる。 （３）多数回繰り返し矯正する必要があるので、板一枚
の矯正に長時間かかる。 （４）圧下荷重はオペレータの経験により定めることが
多いが、圧下荷重Ｐの設定誤差が矯正後の板形状に対し
て大きく影響を与える。The conventional three-point repetitive bending method has the following problems. (1) Local camber correction can be performed, but camber of the full length of the board cannot be corrected at one time. Therefore, work efficiency is poor. (2) With the three-point bending, a uniform bending moment distribution optimal for straightening cannot be obtained. In addition, it may cause breakage of the plate. (3) Since it is necessary to repeatedly perform the correction many times, it takes a long time to correct one plate. (4) The rolling load is often determined by the operator's experience, but the setting error of the rolling load P greatly affects the corrected plate shape.
【０００５】また、上記フランジ付きのレベラによる曲
げ矯正方法では次のような問題があった。 （１）曲げ精度が悪く、精度良く矯正できない。 （２）広幅材に対しては、変形が板中央まで到達しない
ので矯正できない。[0005] In addition, the bending straightening method using the above-mentioned flanged leveler has the following problems. (1) The bending accuracy is poor and cannot be corrected with high accuracy. (2) For wide members, the deformation does not reach the center of the plate, so that it cannot be corrected.
【０００６】[0006]
【課題を解決するための手段】本発明は、前記問題点を
解決するために提案されたもので、板キャンバを矯正す
るに当たり、キャンバ凹側の板の長手方向両端を支持
し、キャンバ凸側の２点に加える押圧力又は押込量を、
キャンバ量、板の寸法及び板の物性に応じて定め、該押
圧力又は押込量を一時に作用させることを特徴とする板
キャンバ矯正方法である。SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned problems. In correcting a plate camber, both ends in the longitudinal direction of the plate on the concave side of the camber are supported and the convex side of the camber is formed. The pressing force or pushing amount applied to the two points
This is a plate camber correction method characterized in that it is determined according to the camber amount, the plate size and the physical properties of the plate, and the pressing force or the pressing amount is applied at a time.
【０００７】この方法を好適に実施することができる本
発明の装置は、板の両端をクランプするクランプと、キ
ャンバ凸側の２点を押圧する圧下装置とを備えたことを
特徴とする板キャンバ矯正装置である。この装置は板長
に応じてクランプ位置及び圧下装置の位置を可変とする
ことにより、板の長さに対応させることができ、また、
板の諸元及びキャンバ量に応じて、適正な押圧力又は変
位そ加えるべき位置及び大きさを定め、これを付与する
ことができる。An apparatus according to the present invention, which can suitably carry out this method, comprises a clamp for clamping both ends of a plate, and a pressing device for pressing two points on the convex side of the camber. It is a straightening device. This device can correspond to the length of the plate by making the clamp position and the position of the screw-down device variable according to the plate length.
In accordance with the specifications of the plate and the camber amount, an appropriate pressing force or displacement and a position and size to be applied can be determined and given.
【０００８】[0008]
【作用】本発明は、測定した初期板形状に基いて曲げ量
を定め、板に４点曲げを与えることによって、初期キャ
ンバを１回の矯正動作で精度良く矯正するようにしたも
のである。本発明の板キャンバの矯正方法を図３によっ
て具体的に説明する。 （ａ）測定済みの初期板形状ｙ0より、初期曲率１／ρ0
を求める。 （ｂ）矯正後の曲率１／ρ＝０とするための最適な曲げ
モーメントＭを定める。この曲げモーメントＭは、初期
曲率１／ρ0、圧下位置、ならびに、板の寸法及び物性
すなわち板長Ｌ、板厚ｔ、板幅Ｗ、降伏応力σ、材料の
ヤング率Ｅより求める。４点曲げの時は、中央部で一様
な曲げモーメントＭ0となる。初期曲率１／ρ0が一定と
みなせるときは、理想的な矯正が可能となる。 （ｃ）圧下装置仕様内で（ｂ）で求めた曲げモーメント
Ｍに最も近い曲げモーメント分布を得るような圧下装置
押込量Δｙ及びライン方向の押込位置Ｌlを求める。押
込量Δｙの代わりに加えるべき押圧力Ｐを求めてもよ
い。 （ｄ）圧下装置で上記押込量Δｙだけ圧下し、又は一定
押圧力Ｐで圧下し、ついで除荷する。According to the present invention, the amount of bending is determined on the basis of the measured initial plate shape, and the plate is subjected to four-point bending, whereby the initial camber is corrected with a single correction operation. The method for correcting the plate camber of the present invention will be specifically described with reference to FIG. (A) From the measured initial plate shape y 0 , the initial curvature 1 / ρ 0
Ask for. (B) An optimum bending moment M for setting the corrected curvature 1 / ρ = 0 is determined. The bending moment M is obtained from the initial curvature 1 / ρ 0 , the rolling position, the dimensions and physical properties of the sheet, ie, the sheet length L, the sheet thickness t, the sheet width W, the yield stress σ, and the Young's modulus E of the material. When bending of four points, the moment M 0 uniform bent at the central portion. When the initial curvature 1 / ρ 0 can be regarded as constant, ideal correction is possible. (C) obtaining the depressed position L l of reduction device pushing amount Δy and the line direction so as to obtain the inside pressure device specification closest bending moment distribution determined bending moment M in (b). The pressing force P to be applied may be obtained instead of the pressing amount Δy. (D) The pressure is reduced by the pressing amount Δy by the pressing device, or the pressure is reduced by the constant pressing force P, and then the load is released.
【０００９】上記（ａ）〜（ｄ）の工程に従う矯正方法
により、曲率が長手方向に一定の初期板キャンバ形状を
持つ板に対して、１回の矯正動作でキャンバ量を精度良
く均一に矯正することができる。According to the correction method according to the above-described steps (a) to (d), the camber amount is accurately and uniformly corrected by a single correction operation for a plate having an initial plate camber shape whose curvature is constant in the longitudinal direction. can do.
【００１０】[0010]
【実施例】図１は本発明の一実施例装置を示す平面図、
図２はその一部の立面図である。キャンバを矯正すべき
板１０はピンチローラ４によって搬送される。板１０の
両端はクランプ装置１ａ，１ｂ，１ｃ，１ｄによって板
１０の両側をクランプされる。クランプ装置は板の長さ
に合わせて位置を調節することができ、例えば、図１の
向かって右側のクランプ装置１ｂ、１ｄは、左右に移動
し、板１０の長さに合わせて位置を固定するようになっ
ている。圧下装置２ａ，２ｂは、位置決め装置６によっ
て左右に移動可能になっており、クランプ位置からの距
離を調整して圧下位置を定める。FIG. 1 is a plan view showing an apparatus according to an embodiment of the present invention.
FIG. 2 is an elevational view of a portion thereof. The plate 10 for correcting the camber is conveyed by the pinch roller 4. Both ends of the plate 10 are clamped on both sides of the plate 10 by clamping devices 1a, 1b, 1c, 1d. The position of the clamp device can be adjusted according to the length of the plate. For example, the clamp devices 1b and 1d on the right side in FIG. 1 move left and right to fix the position according to the length of the plate 10. It is supposed to. The pressing devices 2a and 2b can be moved left and right by the positioning device 6, and determine the pressing position by adjusting the distance from the clamp position.
【００１１】この装置を用いて板キャンバの矯正を行っ
た。図４（ａ）に示すように板長Ｌ、板中央の初期キャ
ンバ量Ｃ0の板の両端部近傍をクランプし、このクラン
プ部からＬ1だけ中央よりの２点に圧下装置を配置す
る。次に、図４（ｂ）に示す押込量（圧下変位）Δｙを
与えて圧下する。押込量Δｙは、例えば図５に示すよう
に与えられる。図５は板材がＨＴＰ５４０、ヤング率Ｅ
＝２１０００ｋｇｆ／ｍｍ2、降伏応力σｙ＝５４ｋｇ
ｆ／ｍｍ2、板幅Ｗ＝４００ｍｍ、板厚ｔ＝８ｍｍ、圧
力装置位置がクランプ部から５００ｍｍのとき、板長が
それぞれＬ＝５ｍ、１０ｍについて初期キャンバ量Ｃ0
（ｍｍ）に対するΔｙ（ｍｍ）の関係を示したものであ
る。ちなみにΔｙは次の式（１）、（２）、（３）から
求めることができる。表１はこれを数値的に示した表で
ある。The camber was corrected using this apparatus. FIGS. 4 (a) are shown as Itacho L, clamped near both ends of the plate of the initial camber amount C 0 of the plate center and position the rolling device to two points from the center of the clamping portion by L 1. Next, the press-down amount (press-down displacement) Δy shown in FIG. The pushing amount Δy is given, for example, as shown in FIG. FIG. 5 shows that the plate material is HTP540 and the Young's modulus E
= 21000 kgf / mm 2 , yield stress σy = 54 kg
f / mm 2 , plate width W = 400 mm, plate thickness t = 8 mm, and pressure device position at 500 mm from the clamp portion, the initial camber amount C 0 for plate lengths L = 5 m and 10 m, respectively.
It shows the relationship of Δy (mm) to (mm). By the way, Δy is obtained from the following equations (1), (2) and (3).
You can ask. Table 1 shows this numerically.
【数１】 (Equation 1)
【００１２】[0012]
【表１】 ──────────────────────── Ｌ Ｃ0 （ｍｍ） Δｙ（ｍｍ） ──────────────────────── １０ｍ １０ ３７．０ １０ｍ ５ ３４．７ １０ｍ ２ ３２．９ ５ｍ １０ ２１．２ ５ｍ ５ １８．７ ５ｍ ２ １６．８ ──────────────────────── この板について、Ｌ＝１０ｍ、Ｃ0 ＝１０ｍｍのときΔ
ｙ＝３７ｍｍとして圧下し、１回の矯正動作で矯正し
た。除荷後は図４（ｃ）に示すように、矯正後キャンバ
量δc ≒±１ｍｍ以内の精度で矯正することができた。[Table 1] ──────────────────────── L C 0 (mm) Δy (mm) ──────────── {10m 10 37.0 10m 5 34.7 10m 2 32.9 5m 10 21.25m 5 18.7 5m 2 16.8}に つ い て For this plate, when L = 10 m and C 0 = 10 mm, Δ
The pressure was reduced as y = 37 mm, and correction was performed by one correction operation. After the unloading, as shown in FIG. 4 (c), the camber could be corrected with an accuracy within the corrected camber amount δ c ≒ ± 1 mm.
【００１３】以上のように、図１の装置により、測定ず
みの初期板形状に対応して、クランプ装置１ｃ、１ｄ、
圧下装置２ａ、２ｂにより４点曲げを与えることにより
初期キャンバ量Ｃ0 ＝＋１０ｍｍから矯正後キャンバ量
δc ＝±１ｍｍ以内にすることができた。これに対し
て、従来の３点曲げ繰り返し方法では、Ｃ0 ＝１０ｍｍ
のとき圧下装置の押力３５ｔｏｎｆで板を送りながらピ
ツチ５００ｍｍごとに２０回矯正し、矯正後のキャンバ
量がδc ＝±１ｍｍとなった。As described above, according to the apparatus shown in FIG. 1, the clamping devices 1c, 1d,
Screw down device 2a, it could be within the initial camber amount C 0 = + straightening after camber amount [delta] c = ± 1 mm from 10mm by providing four-point bending by 2b. In contrast, in the conventional three-point bending repetition method, C 0 = 10 mm
At this time, the plate was corrected 20 times for every pitch of 500 mm while feeding the plate with a pressing force of 35 tonf of the reduction device, and the camber amount after correction was δ c = ± 1 mm.
【００１４】従来技術では、１回の矯正では、初期キャ
ンバ量Ｃ0 ＝±１０ｍｍから矯正後キャンバ量δc ＝±
５ｍｍ程度にしかできず、繰り返し矯正する必要があっ
たが、実施例では１回の矯正動作で矯正後キャンバ量δ
c ＝±１ｍｍ以内にすることができた。なお、上記実施
例では、一方の圧下装置が板長に合わせて可動の場合に
ついて説明したが、両方の圧下装置が可動の装置として
もよく、同型の装置を多数台設置し、板長に応じて装置
を選択して使用するようにした装置でもよい。[0014] In the prior art, once the straightening, the initial camber amount C 0 = correction after the camber quantity [delta] c = ± a ± 10 mm
Although it was only about 5 mm, it was necessary to repeatedly perform correction. However, in the embodiment, the camber amount δ after correction was obtained by one correction operation.
c = within ± 1 mm. In the above embodiment, the case where one of the pressing devices is movable according to the plate length has been described, but both the pressing devices may be movable devices. The device may be a device which is used by selecting the device.
【００１５】また上記実施例では、クランプ位置と圧下
装置間の距離が可変の場合について説明したが、クラン
プと圧下装置間の距離は固定でもよい。In the above embodiment, the case where the distance between the clamp position and the screw-down device is variable is described. However, the distance between the clamp and the screw-down device may be fixed.
【００１６】[0016]
【発明の効果】本発明は、板キャンバの矯正に当たり両
端をクランプして２以上の点で圧下し、初期形状により
圧下装置の押込量及びライン方向の押込位置を制御し
て、板に４点曲げを与えるようにしたから、初期キャン
バを１回で精度良く均一に矯正することができる。ま
た、変形が全体に一様となるので、局所的な板の強度低
下を防ぐという効果もある。According to the present invention, when correcting the plate camber, the both ends are clamped to reduce the pressure at two or more points, and the pressing amount of the pressing device and the pressing position in the line direction are controlled according to the initial shape, and four points are applied to the plate. Since the bending is applied , the initial camber can be accurately and uniformly corrected once. Further, since the deformation becomes uniform as a whole, there is also an effect of preventing a local decrease in the strength of the plate.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の板キャンバ矯正装置を示す平面図であ
る。FIG. 1 is a plan view showing a plate camber straightening device of the present invention.
【図２】本発明の板キャンバ矯正装置を示す立面図であ
る。FIG. 2 is an elevational view showing the plate camber straightening device of the present invention.
【図３】板キャンバ矯正装置の作用を示す説明図であ
る。FIG. 3 is an explanatory view showing the operation of the plate camber straightening device.
【図４】実施例の板キャンバ矯正を示す説明図である。FIG. 4 is an explanatory view showing plate camber correction of the embodiment.
【図５】板キャンバ矯正のために加える圧下量の例を示
すグラフである。FIG. 5 is a graph showing an example of a reduction amount applied for correcting a plate camber.
【図６】従来の板キャンバ矯正装置を示す平面図であ
る。FIG. 6 is a plan view showing a conventional plate camber straightening device.
【図７】従来の板キャンバ矯正装置を示す（ａ）側面
図、（ｂ）平面図である。7A and 7B are a side view and a plan view showing a conventional plate camber straightening device.
１ａ、１ｂ、１ｃ、１ｄ クランプ装置 ２ａ、２ｂ 圧下装置 ４ ピンチロー
ラ ６ 位置決め装置 １０ 板 １１、１２ ピンチローラ １３、１４、１５
圧下装置 ２１ レベラローラ ２２ フランジ1a, 1b, 1c, 1d Clamping device 2a, 2b Depressing device 4 Pinch roller 6 Positioning device 10 Plate 11, 12 Pinch roller 13, 14, 15
Roll-down device 21 Leveler roller 22 Flange
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−220930（ＪＰ，Ａ) 特開 昭53−4756（ＪＰ，Ａ) 特開 昭52−35150（ＪＰ，Ａ) 特開 平４−313422（ＪＰ，Ａ) 実開 平２−144210（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B21D 1/00 - 1/14 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-63-220930 (JP, A) JP-A-53-4756 (JP, A) JP-A-52-35150 (JP, A) JP-A-4- 313422 (JP, A) Japanese Utility Model Hei 2-144210 (JP, U) (58) Fields surveyed (Int. Cl. 7 , DB name) B21D 1/00-1/14
Claims (3)
バ凹側の板の長手方向両端を支持し、キャンバ凸側の２
点に加える押圧力又は押込量を、キャンバ量、板の寸法
及び板の物性に応じて定め、該押圧力又は押込量を一時
に作用させることを特徴とする板キャンバ矯正方法。Upon correcting 1. A plate camber, supporting both longitudinal ends of the plate of the camber concave side, 2 of the camber convex side
A plate camber correction method characterized in that a pressing force or a pressing amount applied to a point is determined according to a camber amount, a size of a plate and physical properties of the plate, and the pressing force or the pressing amount is applied at a time.
ャンバ凸側の２点を押圧する圧下装置とを備えたことを
特徴とする板キャンバ矯正装置。2. A plate camber straightening device comprising: a clamp for clamping both ends of a plate; and a pressing-down device for pressing two points on the camber convex side.
の位置を可変としたことを特徴とする請求項２記載の板
キャンバ矯正装置。3. The plate camber straightening device according to claim 2, wherein the clamp position and the position of the pressing-down device are variable according to the plate length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21050493A JP3209471B2 (en) | 1993-08-25 | 1993-08-25 | Board camber straightening method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21050493A JP3209471B2 (en) | 1993-08-25 | 1993-08-25 | Board camber straightening method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0760352A JPH0760352A (en) | 1995-03-07 |
| JP3209471B2 true JP3209471B2 (en) | 2001-09-17 |
Family
ID=16590466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21050493A Expired - Fee Related JP3209471B2 (en) | 1993-08-25 | 1993-08-25 | Board camber straightening method and apparatus |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433336B (en) * | 2013-07-22 | 2015-11-18 | 燕山大学 | Section bar four-point bending reciprocating pressure method for aligning and straightener |
| CN106180266A (en) * | 2015-05-05 | 2016-12-07 | 五冶集团上海有限公司 | A kind of straightening method of crane beam stiffener |
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1993
- 1993-08-25 JP JP21050493A patent/JP3209471B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0760352A (en) | 1995-03-07 |
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