JPS59144511A - Plate thickness control method of rolling mill - Google Patents
Plate thickness control method of rolling millInfo
- Publication number
- JPS59144511A JPS59144511A JP58017458A JP1745883A JPS59144511A JP S59144511 A JPS59144511 A JP S59144511A JP 58017458 A JP58017458 A JP 58017458A JP 1745883 A JP1745883 A JP 1745883A JP S59144511 A JPS59144511 A JP S59144511A
- Authority
- JP
- Japan
- Prior art keywords
- plate thickness
- roll
- rolling
- load
- detector
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B13/023—Metal-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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は圧延に伴って板幅方向にスラスト力が発生する
圧延機におけるゲージメータ方式板厚制御方法の改良に
関し、クロスロール圧延機に適用して好過なものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a gauge meter type plate thickness control method in a rolling mill in which thrust force is generated in the width direction of the plate during rolling, and is suitable for application to a cross-roll rolling mill. .
圧延機における板厚制御方法のひとつにゲージメータ方
式板厚制御方法が知られており、これ全適用した油圧圧
下制御式の圧延機においては、第１図に示すように、圧
延材１を挾んで上下に対向する一対のワークロール２が
バックアップロール３で圧下刃の支持がなされ、バック
アップロール３の両端部下側に設置された圧下シリンダ
４で圧下刃が付与されるようになっている。そして、圧
下刃を検串するためロールの両端側、すなわちドライブ
側りとワーク側Ｗとの上バツクアップロール３の上部に
それぞれ圧下力検出器５が設けられると共に川下シリン
グ４にシリンダの位置からロールギャップを検出する圧
下位置検出器６が設けてあり、これら検出器５，６から
の信号が制御装Ｇ１７に入力されて演算されたのちの出
力信号がサーボアンプ８を介してサーボ弁９に送られ、
圧下シリング４を制御するようになっている。A gauge meter type plate thickness control method is known as one of the plate thickness control methods in a rolling mill, and in a hydraulic reduction control type rolling mill to which this method is applied, the rolled material 1 is sandwiched between the sheets as shown in Fig. 1. A pair of vertically opposed work rolls 2 are supported with rolling blades by backup rolls 3, and rolling blades are provided by rolling cylinders 4 installed below both ends of the backup rolls 3. In order to detect the rolling blade, rolling force detectors 5 are installed at the upper part of the upper backup roll 3 on both ends of the roll, that is, the drive side and the work side W, and the downstream cylinder 4 is provided with a rolling force detector 5 from the position of the cylinder. A roll down position detector 6 for detecting the roll gap is provided, and signals from these detectors 5 and 6 are input to a control device G17 and calculated, and an output signal is sent to a servo valve 9 via a servo amplifier 8. sent,
It is designed to control the reduction sill 4.
そこで、ゲージメータ方式板厚制御は、圧Ｔ力のロック
オン値、すなわち定常圧延時の基準値からの偏差△Ｐお
よび圧下シリンダ４の平冑位ｊ６からの偏差△ｙをそれ
ぞれ圧下力検出器５および圧下位置検出器６で検出し、
これら偏差△Ｐ、△ｙを制御装置７に入力し７て次式（
１）に基づく演算を行ない、出口板厚偏差△ｈが０とな
るようにサーボアンプ８を介してサーボ弁９を調整して
板厚制御を行なう。肉、図中の添字Ｗ。Therefore, in the gauge meter type plate thickness control, the lock-on value of the pressure T force, that is, the deviation △P from the reference value during steady rolling and the deviation △y from the flat position j6 of the reduction cylinder 4, is detected using a reduction force detector. 5 and the lowering position detector 6,
These deviations △P and △y are input to the control device 7 and are calculated using the following formula (
1), and control the plate thickness by adjusting the servo valve 9 via the servo amplifier 8 so that the outlet plate thickness deviation Δh becomes 0. Meat, subscript W in the diagram.
Ｄｉワーク」１１およびドライブ側を示す３゜ただし、
Ｊ（ｈｑ ：圧延機のミル定数に：チューニング率
ところが、最近圧延製品に対する板厚寸法Ｎ’ＦＪ度の
向上の要求が強く、ワークロール２およびバックアップ
ロール３を互いに交差させて圧延するクロスロール圧延
松たが使用されつつあるが、このクロスロール圧延機で
はロールを交差さぜるため、２１Ｎ２図に示すように、
圧延材１の上面と下面とで圧延方向が異なり、この結果
板幅方向にスラスト力ＦＴが発生する。このため、ワー
ク側Ｗおよびドライブ側りに設置された圧下力検出器５
で検出される圧下力信号ＰＷ、ＰＤは真の圧下刃にスラ
スト力ＦＴとその反力とから生ずるモーメントによるロ
ールの回転を阻止しようとする反力が付加されることと
なる。。Di work” 11 and 3° indicating the drive side.However,
J(hq: Mill constant of rolling mill: Tuning rate However, recently there has been a strong demand for improvement in the plate thickness dimension N'FJ degree for rolled products, and cross-roll rolling in which work rolls 2 and backup rolls 3 are rolled by crossing each other) has been introduced. Matsuda is increasingly being used, but in this cross-roll rolling mill, the rolls are crossed, so as shown in Figure 21N2,
The rolling direction is different between the upper surface and the lower surface of the rolled material 1, and as a result, a thrust force FT is generated in the sheet width direction. For this reason, the rolling force detector 5 installed on the work side W and the drive side
The rolling force signals PW and PD detected at , are applied with a reaction force to the true rolling blade to prevent the rotation of the roll due to the moment generated from the thrust force FT and its reaction force. .
ＮＵえば、第３図に示すように、圧下刃検出器５が上部
に設置されスラスト荷Ｍをワークロール２部分のハウジ
ング１ｏで受ける場合には、ＦＴとの間にはモーメント
の釣合より次式（２）が成立する。For example, as shown in Fig. 3, when the rolling blade detector 5 is installed on the upper part and the thrust load M is received by the housing 1o of the work roll 2, there is a Equation (2) holds true.
ただし、−二スラスト荷重がかがる側、十二反対側、
■も＝ワークロールの半径、
Ｌ：圧下シリンダの中心間の距離、
したがって、ワーク（１１Ｗの荷重とドライブ側りの荷
重との平均値に基づいて両側共通なゲージメータ方式板
厚制御を行なう場合には、上記ため問題とならないが、
蛇行制ｆｌ１１１等を行なうイろ合には、ワーク側Ｗと
ドライブ側りとでそれぞれ独立したゲージメーク方式板
厚制御が必要となり、この場合、上記ロールの回転を阻
止する制御が行なわれてしまう。そして、スラスト力Ｐ
Ｄに影響を与えゲージメータ方式板厚制御の精度低下を
招くという欠点がある。However, -2 is the side where the thrust load is applied, 12 is the opposite side, ■Also = Radius of the work roll, L: Distance between the centers of the rolling cylinders, Therefore, the workpiece (the difference between the load of 11W and the load on the drive side) This does not pose a problem when performing gauge meter type plate thickness control common to both sides based on the average value, but
In order to perform meandering control FL111, etc., independent gauge-making method plate thickness control is required on the work side W and the drive side, and in this case, control is performed to prevent the rotation of the rolls. . And thrust force P
This has the disadvantage that it affects D and causes a decrease in the accuracy of gauge meter type plate thickness control.
本発明はかかる従来の欠点を解消し、圧延に伴って板幅
方向にスラスト力が発生する場合にも高精度にゲージメ
ータ方式板厚制御が出来る圧延機の板厚制御方法の提供
を目的とし、その構成は、スラスト荷重を検出してこれ
に基づく圧下刃の変化分を演算により求め、この変化分
だけ検出した圧下刃を補正することにより真の圧下刃を
イ５て板厚制御することを特徴とする。The present invention aims to eliminate such conventional drawbacks and to provide a method for controlling plate thickness in a rolling mill, which allows highly accurate gauge meter type plate thickness control even when thrust force is generated in the width direction of the plate during rolling. The configuration is to detect the thrust load, calculate the change in the rolling blade based on this, and correct the detected rolling blade by this change to control the plate thickness by adjusting the true rolling blade. It is characterized by
以下、本発明方法の一実施例を第４図に示すクロスロー
ル圧延機に適用した場合に基づき詳に１１１に活、明す
るが、図中、第１図〜第３図と同一部分には同一記号が
記しである。Hereinafter, an embodiment of the method of the present invention will be explained in detail based on the case where it is applied to the cross roll rolling mill shown in FIG. 4. In the figure, the same parts as in FIGS. The same symbol is used for marking.
圧延材１を挾んで上下に対向するワークロール２および
バックアップロール３が互いに交差させてクロス状態で
圧延できるようにｔ１作成されると共にワークロール２
に発生するスラスト力ＦＴを受けるため）・ウジング１
０が設けである。Work rolls 2 and backup rolls 3, which face each other vertically while sandwiching the rolled material 1, are created so that they can cross each other and roll in a cross state, and the work rolls 2
To receive the thrust force FT generated in )・Using 1
0 is the default.
そして、圧下刃を付与するため下バツクアツプロール３
の両端側であるワーク側Ｗおよびドライブ側りのそれぞ
れに圧下シリンダ４が設けられ、圧下力検出器５が上バ
ツクアップロール３のワーク側Ｗおよびドライブ側りに
それぞれ取付けられると共に圧下シリンダ４のそれぞれ
にシリンダの位置からロールギャップを検出する圧下位
置検出器６が取伺けである。さらに、スラスト荷重を検
出するためノ・ウジング１０にスラスト荷重検出器１１
が取付けてあり、これら検出器５，６．１１からの検出
信号が制御装置１”（１２に入力され、制御装置１２の
出力信号がサーボアンプ８を介してサーボ弁９に送られ
圧下シリンダ４を制御して板厚制御を行なうようになっ
ている。Then, in order to apply a reduction blade, lower back-up roll 3
A reduction cylinder 4 is provided on each of the work side W and the drive side, which are both ends of the upper backup roll 3. Each of them is equipped with a roll-down position detector 6 that detects the roll gap from the position of the cylinder. Furthermore, a thrust load detector 11 is installed in the nozzle 10 to detect the thrust load.
are installed, and the detection signals from these detectors 5, 6, and 11 are input to the control device 1'' (12), and the output signal of the control device 12 is sent to the servo valve 9 via the servo amplifier 8. The plate thickness is controlled by controlling the
そこで、ゲージメータ方式板厚制御を行なう嘔〜合には
、圧下力検出器５により検出されるワークｇ１．１１お
よびドライブ１１１１の圧下力信号ＰＷ、ＰＤ。Therefore, when performing gauge meter type plate thickness control, the rolling force signals PW and PD of the workpiece g1.11 and the drive 1111 detected by the rolling force detector 5.
圧下位置検出器６により検出されるワーク側およびドラ
イブ側のシリンタ変位（ｉ３号△ｙｗ、△ｙＤ。Cylinder displacement on the work side and drive side detected by the reduction position detector 6 (No. i3 △yw, △yD).
さらに、スラスト荷重検出器１１により検出されるスラ
スト荷重Ｆ’Ｔを制御装置１２０入力として、この制御
Ｐｌｉ］２で次のような演算処理を行なう。Furthermore, the thrust load F'T detected by the thrust load detector 11 is input to the control device 120, and the following calculation processing is performed in this control Pli]2.
すなわち、ワーク側Ｗの荷重偏差△Ｐｗとして上記（３
）式にかえ、次式（４）を用いる。That is, the above (3
), the following equation (4) is used.
ただし、ＰＷｏ ： ロックオン時のワーク側の圧下刃
、ＦＴｏ：ロックオン時のスラスト荷重、このワーク側
Ｗの圧下力検出信号Ｐｗはスラス■も
ト荷垂ＦＴのために実際の圧延荷重より−・ＦＴし
たけ小さくなるので、スラスト荷ｉＦＴを検出してｌ（
の圧延荷重を演カーによって求め、ロックオン時
ン時の真の圧下刃（ＰＷｏ＋Ｈ・ＦＴｏ）ｆ：差し引い
て補正したものを荷重偏差△Ｐｗとして使用する。However, PWo: rolling blade on the work side at lock-on, FTo: thrust load at lock-on, and the rolling force detection signal Pw on the work side W is lower than the actual rolling load due to the thrust load drop FT.・Since the FT becomes smaller, the thrust load iFT is detected and l(
The rolling load is determined by a calculation wheel, and the true rolling blade at the time of lock-on (PWo+H・FTo) f: is subtracted and corrected and used as the load deviation ΔPw.
一方、ドライブ側Ｄ、すなわちスラスト荷重ＦＴがかか
らない側では、荷重偏差△ＰＤとして次式（５）を用い
て算出する。On the other hand, on the drive side D, that is, the side to which the thrust load FT is not applied, the load deviation ΔPD is calculated using the following equation (5).
几
△ＰＤ ＝ ＰＤ−ＰＤｏ−−（ＦＴ −ＦＴ（１’）
・・−＝ （５）これら荷重偏差△Ｐｗ、△ＰＤを用
い、従来と全く同様上記（１）式に基づき出口板厚偏差
△ｈが０となるようにサーボアンプ８を介してサーボ弁
９を調整して板厚制御を行なう。⇠△PD = PD-PDo--(FT-FT(1')
...-= (5) Using these load deviations △Pw and △PD, the servo valve 9 is adjusted via the servo amplifier 8 so that the outlet plate thickness deviation △h becomes 0 based on the above formula (1), just as in the conventional case. The plate thickness is controlled by adjusting the
同、上記実施例では圧下力検出器を上部に設ｒ３シて、
スラスト荷重をワークロール部で受ける構造の圧延機に
適用した例で説明したが、圧下力検出器を下部に設置し
た場合やスラスト荷重をバックアップロールあるいは上
部ハウソング等で受ける構造の場合でも同様にして本発
明を適用することが可能である。Similarly, in the above embodiment, a rolling force detector is installed at the top,
The explanation was given using an example applied to a rolling mill with a structure in which the thrust load is received by the work roll, but the same method can be used in cases where the rolling force detector is installed at the bottom or in a structure where the thrust load is received by the backup roll or the upper housing song. It is possible to apply the present invention.
以上、実施例とともに具体的に説明したように本発明に
よれば、圧延中に板幅方向にスラスト力が発生する圧延
機にあって、ロールの両端側、すなわちワーク側、ドラ
イブ側で独立しでゲージメーク方式板厚制御を行なって
も高ｔ′ｉ￥度の板厚制御が可能となる。As described above in detail with the embodiments, according to the present invention, in a rolling mill in which thrust force is generated in the width direction of the strip during rolling, both ends of the roll, that is, the work side and the drive side are independent. Even if the gauge make method is used to control the plate thickness, it is possible to control the plate thickness at a high t'i degree.
１−たがって、クロスロール圧延機に適用して有効な板
厚制御ができる、1- Therefore, it can be applied to a cross-roll rolling mill to effectively control the plate thickness.
第１図は従来のゲージメータ方式板厚制御のための概略
構成図、第２図はロールを交差させた際に発生ずるスラ
スト力の曲５明図、第３図はクロスロール圧延機に作用
するスラスト力等の説明図、第４図は本発明の圧ＩＡ機
の板厚制御方法の一実施例をクロスロール圧延機に適用
した場合の概略構成図である。
図面中、
１は圧延月、
２はワークロール、
３けバックアップロール、
４は圧下シリンダ、
５は圧下力検出器、
６は圧下位置検出Ｆ？詩、
８はサーボアンプ、
９はサーボ弁、
１０ｉｄハウジング、
１１はスラスト荷重検出器、
１２は制御装置である。
特許出願人
三菱重工業株式会社
新日本製鐵株式会社
復代理人Figure 1 is a schematic diagram of the conventional gauge meter method for plate thickness control, Figure 2 is a diagram of the thrust force generated when the rolls are crossed, and Figure 3 is the effect on the cross-roll rolling mill. FIG. 4 is a schematic configuration diagram when an embodiment of the plate thickness control method for a rolling IA machine of the present invention is applied to a cross roll rolling mill. In the drawing, 1 is a rolling roll, 2 is a work roll, 3 backup rolls, 4 is a rolling cylinder, 5 is a rolling force detector, and 6 is a rolling position detection F? 8 is a servo amplifier, 9 is a servo valve, 10 is an ID housing, 11 is a thrust load detector, and 12 is a control device. Patent applicant Mitsubishi Heavy Industries, Ltd. Nippon Steel Corporation Sub-Agent
Claims (1)
る圧延機においてロールの両端側でそれぞれ独立してゲ
ージメータ方式板厚制御をするに際し、スラスト荷重お
よび圧下刃を検出し、スラスト荷重による圧下刃の変化
分を演算により求め、この変化分により検出された川下
刃を補正することを特徴とする圧延機の板厚制御方法。In a rolling mill where thrust force is generated in the width direction of the rolled material as it is rolled, the thickness is controlled using a gauge meter independently at both ends of the roll. A plate thickness control method for a rolling mill, characterized in that a change in the blade is calculated and a detected downstream blade is corrected based on the change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58017458A JPS59144511A (en) | 1983-02-07 | 1983-02-07 | Plate thickness control method of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58017458A JPS59144511A (en) | 1983-02-07 | 1983-02-07 | Plate thickness control method of rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59144511A true JPS59144511A (en) | 1984-08-18 |
| JPS6323851B2 JPS6323851B2 (en) | 1988-05-18 |
Family
ID=11944572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58017458A Granted JPS59144511A (en) | 1983-02-07 | 1983-02-07 | Plate thickness control method of rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59144511A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994011129A1 (en) * | 1992-11-10 | 1994-05-26 | Nippon Steel Corporation | Reverse rolling control system of pair cross rolling mill |
| EP1344582A1 (en) * | 2000-11-17 | 2003-09-17 | Nippon Steel Corporation | Depressing position setting method for rolling plate |
| JP2007159424A (en) * | 2005-12-09 | 2007-06-28 | Ishikawajima Shibaura Mach Co Ltd | Implement posture controlling apparatus for working vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1757377B1 (en) * | 1998-02-27 | 2017-05-17 | Nippon Steel & Sumitomo Metal Corporation | Strip rolling mill calibration method and device for the same |
-
1983
- 1983-02-07 JP JP58017458A patent/JPS59144511A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994011129A1 (en) * | 1992-11-10 | 1994-05-26 | Nippon Steel Corporation | Reverse rolling control system of pair cross rolling mill |
| GB2278464A (en) * | 1992-11-10 | 1994-11-30 | Nippon Steel Corp | Reverse rolling control system of pair cross rolling mill |
| GB2278464B (en) * | 1992-11-10 | 1996-09-25 | Nippon Steel Corp | Method for regulating reverse rolling of pair cross mill |
| EP1344582A1 (en) * | 2000-11-17 | 2003-09-17 | Nippon Steel Corporation | Depressing position setting method for rolling plate |
| EP1344582A4 (en) * | 2000-11-17 | 2006-04-12 | Nippon Steel Corp | Depressing position setting method for rolling plate |
| JP2007159424A (en) * | 2005-12-09 | 2007-06-28 | Ishikawajima Shibaura Mach Co Ltd | Implement posture controlling apparatus for working vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6323851B2 (en) | 1988-05-18 |
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