JPS63264204A - Rolling mill - Google Patents

Rolling mill

Info

Publication number
JPS63264204A
JPS63264204A JP9851387A JP9851387A JPS63264204A JP S63264204 A JPS63264204 A JP S63264204A JP 9851387 A JP9851387 A JP 9851387A JP 9851387 A JP9851387 A JP 9851387A JP S63264204 A JPS63264204 A JP S63264204A
Authority
JP
Japan
Prior art keywords
roll
rolling
equation
rolls
amounts
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
JP9851387A
Other languages
Japanese (ja)
Inventor
Tetsuo Kajiwara
哲雄 梶原
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP9851387A priority Critical patent/JPS63264204A/en
Publication of JPS63264204A publication Critical patent/JPS63264204A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B13/00Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B13/023Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B13/00Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/142Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B27/00Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02Shape or construction of rolls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16Adjusting or positioning rolls
    • B21B31/18Adjusting or positioning rolls by moving rolls axially
    • B21B31/185Adjusting or positioning rolls by moving rolls axially and by crossing rolls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

PURPOSE:To properly control a thickness of a rolled stock and to improve the sheet thickness accuracy in the width direction by shifting and crossing a couple of rolling rolls crowned to meet specific equations by a point symmetrical diameter changing amount relating to an axial length from the longitudinal body center. CONSTITUTION:The equation I expresses variation amounts in diameter to coordinates (x) in the axial direction from the body center of a rolling roll. The equation II expresses roll gap variation amounts S1(x) in the case of shifting the roll. The equation III expresses roll gaps S2(x) in the case of crossing the roll at an angle theta. D shows a roll diameter. Therefore, the equation IV expresses roll gaps S(x) in the case of shifting and crossing the roll. A 1st term of the equation IV is a quaternary term and corresponds to compensational amounts of an edge drop 11b and a 2nd term of parabolic component corresponds to compensational amounts of a crown 11a. By crowning the roll to correspond those compensational amounts, a rolled sheet thickness is corrected, the roll cost is reduced, and the productivity is improved without preparating plural types of rolling rolls.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は金属ストリップを平坦にする圧延機に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to a rolling mill for flattening metal strip.

〈従来の技術〉 近年、圧延製品の精度、特に板幅方向の板厚精度に対す
る要求が益々厳しくなっている。この板厚方向の板厚異
常の主なものは、金属ストリップの横断面形状を表わす
第4図に示すように、金属ストリップ11の板幅方向中
央部が脹らむ板クラウンllaと、板幅方向両端から2
5〜50II1m程度まで急激に板厚が減少するエツジ
ドロップtibがある。このうち、板幅方向全体に亙っ
て分布する板クラウンllaについては、圧延ロールを
互いにクロスさせることでほぼ対応することが可能であ
る。すなわち、第5図に示すように、被圧延材である金
属ストリップ11を挟んで上下に対向する圧延ロール!
2及びそれらの補強ロール13を金属ストリップ11と
平行な面内で上下で互いに反対方向に傾斜させ、これに
よって両圧延ロール12の隙間をロール端部に行くに従
って広がるようにし、圧延荷重による圧延ロール12の
撓みを補償するのである。
<Prior Art> In recent years, the requirements for precision of rolled products, especially the precision of plate thickness in the width direction of the plate, have become increasingly strict. As shown in FIG. 4, which shows the cross-sectional shape of the metal strip, the main causes of this thickness abnormality are the plate crown lla where the central part of the metal strip 11 in the plate width direction swells, and the plate crown lla at both ends in the plate width direction. From 2
There is an edge drop tib whose plate thickness decreases rapidly to about 5 to 50 II 1 m. Of these, the sheet crown lla distributed over the entire sheet width direction can be almost dealt with by making the rolling rolls cross each other. That is, as shown in FIG. 5, rolling rolls face each other vertically with the metal strip 11, which is the material to be rolled, in between!
2 and their reinforcing rolls 13 are tilted in opposite directions at the top and bottom in a plane parallel to the metal strip 11, so that the gap between both rolling rolls 12 widens toward the ends of the rolls, and the rolling rolls due to the rolling load This compensates for the deflection of 12.

一方、エツジドロップllbを低減する技術としては、
第6図に示すように、上下の圧延ロール14の反対側一
端部にそれぞれ端に向って直径がWk減するテーバ部1
4aを設け、これらの圧延ロール14を軸方向に互いに
反対方向に移動させて金属ストリップ11の板幅方向両
端部をそのテーバ部14aで圧延するものがある。
On the other hand, as a technology to reduce edge drop llb,
As shown in FIG. 6, at one end of the opposite side of the upper and lower rolling rolls 14, there is a tapered part 1 whose diameter decreases by Wk toward the end.
4a, these rolls 14 are moved axially in opposite directions to roll both ends of the metal strip 11 in the width direction with the tapered portions 14a.

〈発明が解決しようとする問題点〉 上述した上下の圧延ロール12をクロスさせるものにあ
っては、エツジドロップllbに対しては十分に対応す
ることができない。
<Problems to be Solved by the Invention> The above-mentioned arrangement in which the upper and lower rolling rolls 12 are crossed cannot sufficiently cope with edge drop Ilb.

すなわち、エツジドロップ11bを補償するためには圧
延ロール12のクロス角を大きくする必要があるが、ク
ロス角をあまり大きくすると板幅方向全体の板厚分布が
悪化し、金属ストリップ11の平坦度も保てない状態と
なってしまう。これは、板クラウンlla、圧延ロール
12の撓みが放物線(2次曲線)に近い形であるのに対
し、エツジドロップflbはロール表面の凹み変形に起
因するもので、板幅端部で凹み量が急変する高次の曲線
になっているためである。
That is, in order to compensate for the edge drop 11b, it is necessary to increase the cross angle of the rolling rolls 12, but if the cross angle is too large, the thickness distribution in the entire strip width direction will deteriorate, and the flatness of the metal strip 11 will also deteriorate. It becomes impossible to maintain it. This is because the deflection of the plate crown lla and the rolling roll 12 is close to a parabola (quadratic curve), whereas the edge drop flb is caused by concave deformation of the roll surface, and the amount of concavity at the edge of the plate width. This is because it is a high-order curve that changes suddenly.

一方、圧延ロール14端部にテーバ部 14aを設けたものにあっては有効にエツジドロップl
lbを低減することができるか、この場合は板厚や圧下
率が変化する毎にテーバ部14aのテーバ量を変更する
必要があり、そのため各種の圧延作業を行うためには予
め多種類の交換用ロールを用意しておき、その都度ロー
ル交換を行わなければならず、生産性の低下やロールコ
ストの上昇を招くという問題点があった。
On the other hand, if the tapered portion 14a is provided at the end of the rolling roll 14, the edge drop l
lb can be reduced. In this case, it is necessary to change the taper amount of the taper portion 14a every time the plate thickness or rolling reduction rate changes. Therefore, in order to perform various rolling operations, various types of replacements are required in advance. It is necessary to prepare rolls for use and replace the rolls each time, which leads to problems such as a decrease in productivity and an increase in roll costs.

本発明は、このような従来の圧延機における問題点を解
決するものであり、簡単な操作によって板クラウンとエ
ツジドロップを適正に制御できる圧延機を提供すること
を目的としている。
The present invention solves these problems in conventional rolling mills, and aims to provide a rolling mill that can appropriately control plate crown and edge drop through simple operations.

く問題点を解決するための手段〉 上述の問題点を解決する本発明にかかる圧延機は、胴長
中心から軸方向にとった座標Xに対し直径の変化量がa
x5−bx” −axで与えられるクラウニングが施さ
れると共に互いに点対称となるように配置された一対の
圧延ロールと、前記圧延ロールを相対的に軸方向に移動
させるロールシフト手段と、前記圧延ロールを被圧延材
と平行な面内で互いに反対方向に傾斜させるロールクロ
ス手段とを具えたことを特徴とする。
Means for Solving the Problems> The rolling mill according to the present invention that solves the above problems has a diameter change amount of a with respect to the coordinate X taken in the axial direction from the center of the body length.
a pair of rolling rolls provided with a crowning given by x5-bx''-ax and arranged point-symmetrically with respect to each other; roll shifting means for relatively moving the rolling rolls in the axial direction; The present invention is characterized by comprising roll crossing means for tilting the rolls in opposite directions in a plane parallel to the rolled material.

〈作   用〉 ロールシフト手段により圧延ロールを軸方向に互いに反
対方向にΔXだけ移動すると。
<Operation> When the roll shift means moves the rolling rolls in the axial direction by ΔX in mutually opposite directions.

両圧延ロールの隙間分布ΔS l (X)はΔS+ (
X) = lOaΔx−x’+ 2(IOaΔx3−b
) ・x2で与えられる。一方、ロールクロス手段によ
り圧延ロールを傾斜させ1両圧延ロールの成すクロス角
をθとすると、両圧延ロールの隙間分布Δ52(X)は
、 で与えられる。ここで、Dは圧延ロール径であり、両圧
延ロール径は等しいとしている。
The gap distribution ΔS l (X) between both rolling rolls is ΔS+ (
X) = IOaΔx-x'+ 2(IOaΔx3-b
) ・Given by x2. On the other hand, if the rolling rolls are inclined by the roll crossing means and the crossing angle formed by one rolling roll is θ, then the gap distribution Δ52(X) between the rolling rolls is given by: Here, D is the diameter of the rolling roll, and the diameters of both rolling rolls are assumed to be equal.

従って、これらによって両圧延ロール間に創成される隙
間分布Δ5(x)は、 Δ5(x)=Δ5l(X)+Δs、 (X)となる。
Therefore, the gap distribution Δ5(x) created between both rolling rolls by these is as follows: Δ5(x)=Δ5l(X)+Δs, (X).

上式Δ5(x)において、第1項の高次の成分は主とし
てエツジドロップに対応させ、第2項の放物線成分は板
クラウンに対応させて板79分布を補償する。すなわち
、先ず、圧延ロールを軸方向に互いに反対方向に移動さ
せることでエツジドロップが補償され、その結果生じる
板クラウンの変化は圧延ロールを互いに反対方向に傾斜
させることによって補償される。
In the above formula Δ5(x), the high-order component of the first term is made to correspond mainly to the edge drop, and the parabolic component of the second term is made to correspond to the plate crown to compensate for the plate 79 distribution. That is, the edge drop is first compensated for by moving the mill rolls axially in opposite directions, and the resulting changes in the sheet crown are compensated for by tilting the mill rolls in opposite directions.

く実 施 例〉 以下、本発明の一実施例を図面によって具体的に説明す
る。
Embodiment Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings.

第1図は本発明の一実施例にかかる圧廷機の正面図、第
2図はその平面図である。第1図及び第2図において、
21は被圧延材である金属ストリップ、22は本発明に
かかるクラウニングが施された圧延ロール、23は補強
ロールである。
FIG. 1 is a front view of a flattening machine according to an embodiment of the present invention, and FIG. 2 is a plan view thereof. In Figures 1 and 2,
21 is a metal strip which is a material to be rolled, 22 is a rolling roll provided with the crowning according to the present invention, and 23 is a reinforcing roll.

第1図に示すように、圧延ロール22は金属ストリップ
21を挟んで一ヒ下に位置するように一対設けられ、そ
れらの両端はそれぞれ軸受箱24に支持されている。ま
た、圧延ロール22には各々補強ロール23が設けられ
ていて、各補強ロール23の両端はそれぞれ軸受箱25
に支持され、これらの軸受箱25が軸受箱押えブロック
26により支えられる一方、前記圧延ロール22の軸受
箱24はこの補強ロール23の軸受箱25に軸方向に移
動できるように保持されている。この圧延ロール22の
軸受3@24にはロールシフト手段として移動装置27
が取付けられており、この移動装置27で軸受箱24を
押引することにより、上下の圧延ロール22をそれぞれ
その軸方向に動かすことができるようになっている。
As shown in FIG. 1, a pair of rolling rolls 22 are provided one below the other with the metal strip 21 in between, and both ends of the rolling rolls 22 are supported by bearing boxes 24, respectively. Further, each of the rolling rolls 22 is provided with a reinforcing roll 23, and both ends of each reinforcing roll 23 are provided with bearing boxes 25, respectively.
These bearing boxes 25 are supported by a bearing box holding block 26, while the bearing box 24 of the rolling roll 22 is held by the bearing box 25 of the reinforcing roll 23 so as to be movable in the axial direction. The bearing 3@24 of this rolling roll 22 has a moving device 27 as a roll shifting means.
is attached, and by pushing and pulling the bearing box 24 with this moving device 27, the upper and lower rolling rolls 22 can be moved in their respective axial directions.

第2図に示すように、補強ロール23の軸受箱25の側
面(金属ストリップ21の搬送方向前後に位置する面)
にはそれぞれ凹形のライナ28が取付けられると共に、
このライナ28に嵌まり合ってそれを押圧する凸曲面形
状の押圧部29を存するシリンダ30がハウジング31
内に組込まれており、これらによってロールクロス手段
が、構成されている。すなわち、補強ロール23の一端
側の軸受箱25を挟んで対向するシリンダ30の一方を
油圧供給装置32で伸長させると共に他方を短縮させる
ことで軸受箱25を例えば金属ストリップ21の搬送方
向前方側へ移動させると共に、補強ロール23の他端側
の相愛′に125を同様に搬送方向後方側へ移動させる
ことにより、該補強ロール23を金属ストリップ11と
平行な而(水平面)内でその軸線を搬送方向と直角を成
す方向に対して傾斜させることができ、これを上下の補
強ロール23について互いに反対方向となるように行う
ことで上下の補強ロール23を上下方向から見てクロス
させることが可能である。圧延ロール22の軸受箱24
はこの補強ロール23の軸受箱25に抱かわているため
、圧延ロール22は補強ロール23と同じに傾斜するこ
とになる。尚、4本のシリンダ30は互いに連動して作
動するようにしてもよいし、互いに独立して作動するよ
うにすることも可能である。また、ロールシフト手段は
圧延ロール22を直接傾斜させるように構成することも
できる。
As shown in FIG. 2, the side surface of the bearing box 25 of the reinforcing roll 23 (the surface located in the front and rear of the conveyance direction of the metal strip 21)
A concave liner 28 is attached to each, and
A housing 31 includes a cylinder 30 having a pressing portion 29 having a convex curved surface that fits into and presses the liner 28.
These components constitute a roll cross means. That is, by extending one side of the cylinders 30 facing each other across the bearing box 25 at one end of the reinforcing roll 23 using the hydraulic supply device 32 and shortening the other, the bearing box 25 is moved, for example, to the front side in the conveyance direction of the metal strip 21. At the same time, the reinforcing roll 23 is conveyed with its axis parallel to the metal strip 11 (horizontal plane) by similarly moving the reinforcing roll 23 backward in the conveying direction. By tilting the upper and lower reinforcing rolls 23 in opposite directions, it is possible to make the upper and lower reinforcing rolls 23 cross when viewed from the vertical direction. be. Bearing box 24 of rolling roll 22
is surrounded by the bearing box 25 of the reinforcing roll 23, so the rolling roll 22 is inclined in the same way as the reinforcing roll 23. Note that the four cylinders 30 may be operated in conjunction with each other, or may be operated independently of each other. Further, the roll shift means can also be configured to directly tilt the rolling roll 22.

さらに、本発明にかかる圧延ロール22は、胴長中心か
ら軸方向にとった座標Xに対し、直径の変化量が、 c、(x)=ax’  −bx2−c (a〉0、 b≧0、c >O)  ・・・・・(1)
で与えられるクラウニングが施されており、上下の圧延
ロール22が互いに点対称となるように配置されている
Further, in the rolling roll 22 according to the present invention, the amount of change in diameter with respect to the coordinate X taken in the axial direction from the center of the body length is c, (x) = ax' - bx2 - c (a>0, b≧ 0, c > O) ・・・・・・(1)
The upper and lower rolling rolls 22 are arranged symmetrically with respect to each other.

このような圧延ロール22において、先ずト下圧延ロー
ル22を軸方向に互いに反対方向にΔXだけ移動させた
ときの両者の相対隙間を考える。先ず、上下の圧延ロー
ル22を共通の座標系で表わすと、上側の圧延ロール2
2を c r−t(x)= a xS−b x’ −c x 
−−−−(2)とすると下側の圧延ロール22は点対称
であるから C、−2(X) = a (−x)5−b (−x)”
−c (−x)=−ax5−bx’+cx   ・・・
・・(:])となる。
In such a rolling roll 22, first consider the relative gap between the lower rolling rolls 22 when they are moved by ΔX in mutually opposite directions in the axial direction. First, if the upper and lower rolling rolls 22 are expressed in a common coordinate system, the upper rolling roll 2
2 as cr-t(x)=a xS-b x' -c x
----If (2) is used, the lower rolling roll 22 is point symmetrical, so C, -2(X) = a (-x)5-b (-x)"
-c (-x)=-ax5-bx'+cx...
...(:]).

いま、両圧延ロール22を互いに逆方向にΔXだけ移動
させると、点対称軸は矛多動しないから点対称軸からX
の位置にある上下圧延ロール22のタラウニング晴は、
それぞれ次式で与えられる。
Now, if both rolling rolls 22 are moved in opposite directions to each other by ΔX, the axis of point symmetry will not move too much, so
The roller rolling of the upper and lower rolling rolls 22 at the position of
Each is given by the following formula.

cr−+(x+Δx) −a (x+Δx) 5−b 
(x+Δx) 2−c (x+Δ×)・・・・・(4) Cr−2(X−Δx)−a (x−Δx) ”b (x
−Δx)”+c(x−Δx)・・・・・(5) 従って、このときの両圧延ロール22の隙間ΔS+(X
)は式(4)、(5)を加えて、ΔS+ (x) 1−
Cr−+ (x÷Δx) ”Cr−2(X−AX)−a
(10Δx”x’÷20Δ×3・×2÷2Δxs)−b
(2x2+2Δx”)−2cΔX =10aΔx−x’+2 (10aΔx’−b)x2+
(2aΔx’−2bΔx2−2cΔX)ここで、第3項
はXに無関係であるから、両者の相対隙間は次式となる
cr-+(x+Δx) -a (x+Δx) 5-b
(x+Δx) 2-c (x+Δx)...(4) Cr-2(X-Δx)-a (x-Δx) ”b (x
-Δx)"+c(x-Δx)...(5) Therefore, at this time, the gap ΔS+(X
) is obtained by adding equations (4) and (5), ΔS+ (x) 1−
Cr-+ (x÷Δx) ”Cr-2(X-AX)-a
(10Δx”x'÷20Δ×3・×2÷2Δxs)−b
(2x2+2Δx")-2cΔX = 10aΔx-x'+2 (10aΔx'-b)x2+
(2aΔx'-2bΔx2-2cΔX) Here, since the third term is unrelated to X, the relative gap between the two is given by the following equation.

ΔS、(x)−IlOaΔx−x’+2(10aΔ×3
−b)×2 ・・・・(6)次に、圧延ロール22をそ
れぞれ傾斜させて上下方向から見てクロス角θでクロス
させたときの両者の相対隙間を考える。いま、第3図(
a)に示すように、クロス角θでクロスする両圧延ロー
ル22の交差点OからX@れた位置でのロール中心のず
れ叶δは、また、両圧延ロール22のロール径を共にD
とすると、このXの位置における両圧延ロール22の隙
間Δ52(X)は、第3図(b)から、Δ52(X)=
!丁)2−D ここで、δ(Dであるから ΔS、(X)AID (1+2(P)) −D=止  
    ・・・・・(8) 式(7)、 (8)から 以上の軸方向移動による隙間Δs 1(x)とロールク
ロスによる隙間Δ52(X)を重ね合わせた隙間ΔS 
(x)は式(6)、(9)を加えて、式(10)におい
て、第1項は高次の4次式であるので、主としてエツジ
ドロップの補償に対応させ、第2項の放物線成分は板ク
ラウンの補償に対応させればよい。これにより、目標の
エツジドロップ量と板クラウン量から与えられる必要な
ロール隙間の補償量に対し、圧延ロール22の軸方向相
対移動量と圧延ロール22のロールクロス角を変えるこ
とにより、それぞれを独立して;し制御することができ
る。すなわち、エツジドロップを補償するためには先ず
圧延ロール22を軸方向に互いに反対方向に移動させ、
その結果生じる板クラウンの変化は圧延ロール22を互
いに反対方向に傾斜させてクロスさせることで補償すれ
ばよい。また、板クラウンのみを補償するには、主に圧
延ロール22をクロスさせることで行う。
ΔS, (x)-IlOaΔx-x'+2 (10aΔ×3
-b)×2 (6) Next, consider the relative gap between the rolling rolls 22 when they are inclined and crossed at a cross angle θ when viewed from above and below. Now, Figure 3 (
As shown in a), the roll center deviation δ at a position X@ away from the intersection O of both rolling rolls 22 crossing at a cross angle θ is also equal to the roll diameter of both rolling rolls 22 being D.
Then, from FIG. 3(b), the gap Δ52(X) between both rolling rolls 22 at the position of X is Δ52(X)=
! D) 2-D Here, δ(D, so ΔS, (X)AID (1+2(P)) -D=stop
...(8) From equations (7) and (8), the gap ΔS is the sum of the gap Δs 1 (x) due to the above axial movement and the gap Δ52 (X) due to roll cross.
(x) is obtained by adding Equations (6) and (9), and in Equation (10), since the first term is a high-order quartic equation, it mainly corresponds to edge drop compensation, and the parabola of the second term is The components may be adapted to compensate for the plate crown. As a result, by changing the axial relative movement amount of the rolling roll 22 and the roll cross angle of the rolling roll 22, the required amount of roll gap compensation given from the target edge drop amount and plate crown amount can be adjusted independently. can be controlled; That is, in order to compensate for the edge drop, first the rolling rolls 22 are moved in opposite directions in the axial direction,
The resulting changes in plate crown may be compensated for by tilting the rolls 22 in opposite directions and crossing them. Moreover, in order to compensate only for the plate crown, this is mainly done by crossing the rolling rolls 22.

尚、圧延においては大きな板クラウン の板も作る必要があるため、係数すは、ロールの最大移
動量をΔXゆIIMとすると、b≧10aΔ×、□3で
あるのが望ましい。
Incidentally, since it is necessary to make a plate with a large plate crown in rolling, it is desirable that the coefficient S is b≧10aΔ×, □3, where the maximum amount of roll movement is ΔX and IIM.

さらに、係数Cは板厚補償性能には関係がないが、Cを
変えることによりロール径差を小さくできるため、正の
値を選ぶのがよい。
Further, although the coefficient C has no relation to the plate thickness compensation performance, it is preferable to select a positive value because the difference in roll diameter can be reduced by changing the coefficient C.

〈発明の効果〉 以上、一実施例を挙げて詳細に説明したように本発明に
よれば、圧延ロールをロールシフトさせることでエツジ
ドロップを補償できると共に、圧延ロールをロールクロ
スさせることで板クラウンを補償できるので、簡昨な操
作によって板クラウン及びエツジドロップの双方を適正
に制御することが可能となり、被圧延材の幅方向の板厚
精度を大幅に改善することができる。従って従来、許容
公差外のため切り捨てられていた幅端部まで製品として
使用でき、歩留りを大幅に向上させることができる。ま
た、圧延ロールには1種類のロールクラウニングを施し
ておくだけで各種仕様の圧延作業に適用できるので、複
数種類の圧延ロールを用意する必要がなく、ロールコス
トの低減や生産性の向上にも寄与し得る。
<Effects of the Invention> As described above in detail with reference to one embodiment, according to the present invention, edge drops can be compensated for by shifting the rolls, and sheet crown can be compensated for by rolling the rolls. Since it is possible to compensate for this, it becomes possible to appropriately control both the plate crown and edge drop with simple operations, and it is possible to significantly improve the plate thickness accuracy in the width direction of the rolled material. Therefore, it is possible to use even the width end portion, which was conventionally cut off because it was outside the allowable tolerance, as a product, and the yield can be significantly improved. In addition, by applying one type of roll crowning to a rolling roll, it can be applied to rolling operations of various specifications, so there is no need to prepare multiple types of rolling rolls, reducing roll costs and improving productivity. can contribute.

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

第1図は本発明の一実施例にかかる圧延機の正面図、第
2図はその平面図、第3図(a)、(b)はロールクロ
ス時の説明図、第4図は板厚分布を表わす金属ストリッ
プの横断面図、第5図及び第6図はそれぞれ従来例にか
かる圧延機の概念図である。 図面中、 21は金属ストリップ、 22は圧延ロール、 27は移動装置、 30はシリンダである。
Fig. 1 is a front view of a rolling mill according to an embodiment of the present invention, Fig. 2 is a plan view thereof, Figs. 3 (a) and (b) are explanatory diagrams at the time of roll crossing, and Fig. 4 is a plate thickness. A cross-sectional view of a metal strip showing the distribution, and FIGS. 5 and 6 are conceptual views of a conventional rolling mill. In the drawings, 21 is a metal strip, 22 is a rolling roll, 27 is a moving device, and 30 is a cylinder.

Claims (1)

【特許請求の範囲】[Claims] 胴長中心から軸方向にとった座標xに対し直径の変化量
がax^5−bx^2−cxで与えられるクラウニング
が施されると共に互いに点対称となるように配置された
一対の圧延ロールと、前記圧延ロールを相対的に軸方向
に移動させるロールシフト手段と、前記圧延ロールを被
圧延材と平行な面内で互いに反対方向に傾斜させるロー
ルクロス手段とを具えたことを特徴とする圧延機。
A pair of rolling rolls that are crowned so that the amount of change in diameter is given by ax^5-bx^2-cx with respect to the coordinate x taken in the axial direction from the center of the body length, and are arranged point-symmetrically to each other. and roll shifting means for relatively moving the rolling rolls in the axial direction, and roll crossing means for tilting the rolling rolls in opposite directions in a plane parallel to the rolled material. rolling machine.
JP9851387A 1987-04-23 1987-04-23 Rolling mill Pending JPS63264204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9851387A JPS63264204A (en) 1987-04-23 1987-04-23 Rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9851387A JPS63264204A (en) 1987-04-23 1987-04-23 Rolling mill

Publications (1)

Publication Number Publication Date
JPS63264204A true JPS63264204A (en) 1988-11-01

Family

ID=14221730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9851387A Pending JPS63264204A (en) 1987-04-23 1987-04-23 Rolling mill

Country Status (1)

Country Link
JP (1) JPS63264204A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140838A (en) * 1990-07-06 1992-08-25 Koyo Seiko Co., Ltd. Driving apparatus for rolling mill
EP0819481A1 (en) * 1996-07-18 1998-01-21 Kawasaki Steel Corporation Rolling method and rolling mill of strip for reducing edge drop
WO2006099817A1 (en) * 2005-03-25 2006-09-28 Angang Steel Company Limited A roll profile for both shape control and free ruled rolling
JP2007514548A (en) * 2003-12-19 2007-06-07 エス・エム・エス・デマーク・アクチエンゲゼルシャフト A method for combining operation modes in a cold tandem line and a cold tandem line combining rolling mill types
KR20240038761A (en) 2021-10-19 2024-03-25 프리메탈스 테크놀로지스 재팬 가부시키가이샤 Rolling mill and rolling method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5630014A (en) * 1979-08-17 1981-03-26 Kobe Steel Ltd Rolling mill
JPS58187207A (en) * 1982-04-10 1983-11-01 エス・エム・エス・シユレ−マン−ジ−マ−ク・アクチエンゲゼルシヤフト Roll stand with roll slidable in axial direction
JPS59183908A (en) * 1983-04-04 1984-10-19 Mitsubishi Heavy Ind Ltd Rolling mill
JPS6241401B2 (en) * 1980-09-08 1987-09-02 Matsushita Electric Ind Co Ltd

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5630014A (en) * 1979-08-17 1981-03-26 Kobe Steel Ltd Rolling mill
JPS6241401B2 (en) * 1980-09-08 1987-09-02 Matsushita Electric Ind Co Ltd
JPS58187207A (en) * 1982-04-10 1983-11-01 エス・エム・エス・シユレ−マン−ジ−マ−ク・アクチエンゲゼルシヤフト Roll stand with roll slidable in axial direction
JPS59183908A (en) * 1983-04-04 1984-10-19 Mitsubishi Heavy Ind Ltd Rolling mill

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140838A (en) * 1990-07-06 1992-08-25 Koyo Seiko Co., Ltd. Driving apparatus for rolling mill
EP0819481A1 (en) * 1996-07-18 1998-01-21 Kawasaki Steel Corporation Rolling method and rolling mill of strip for reducing edge drop
US5875663A (en) * 1996-07-18 1999-03-02 Kawasaki Steel Corporation Rolling method and rolling mill of strip for reducing edge drop
EP1129796A2 (en) * 1996-07-18 2001-09-05 Kawasaki Steel Corporation Rolling method and rolling mill of strip for reducing edge drop
EP1129796A3 (en) * 1996-07-18 2001-12-19 Kawasaki Steel Corporation Rolling method and rolling mill of strip for reducing edge drop
JP2007514548A (en) * 2003-12-19 2007-06-07 エス・エム・エス・デマーク・アクチエンゲゼルシャフト A method for combining operation modes in a cold tandem line and a cold tandem line combining rolling mill types
KR101224940B1 (en) * 2003-12-19 2013-01-22 에스엠에스 지마크 악티엔게젤샤프트 Combined operating modes and frame types in tandem cold rolling mills
WO2006099817A1 (en) * 2005-03-25 2006-09-28 Angang Steel Company Limited A roll profile for both shape control and free ruled rolling
AU2006227039B2 (en) * 2005-03-25 2009-01-29 Angang Steel Company Limited A roll profile for both shape control and free ruled rolling
US7913531B2 (en) 2005-03-25 2011-03-29 Angang Steel Company Limited Roll profile for both shape control and free ruled rolling
KR20240038761A (en) 2021-10-19 2024-03-25 프리메탈스 테크놀로지스 재팬 가부시키가이샤 Rolling mill and rolling method

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