JPH0470088B2 - - Google Patents
Info
- Publication number
- JPH0470088B2 JPH0470088B2 JP59191594A JP19159484A JPH0470088B2 JP H0470088 B2 JPH0470088 B2 JP H0470088B2 JP 59191594 A JP59191594 A JP 59191594A JP 19159484 A JP19159484 A JP 19159484A JP H0470088 B2 JPH0470088 B2 JP H0470088B2
- Authority
- JP
- Japan
- Prior art keywords
- rolled material
- coil
- winding
- shape
- pressure
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 21
- 238000004804 winding Methods 0.000 claims description 16
- 238000004364 calculation method Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 description 9
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
〔発明の技術分野〕
本発明は圧延材、特に冷間圧延材の形状検出方
法に関する。
〔従来技術〕
冷間圧延により得られる圧延材の形状制御に
は、圧延ロール（ワークロール）の曲げ荷重を変
えてロールキヤンバーを制御するロールベンデイ
ング制御と圧延ロールロール冷却媒体を噴射して
その噴射量を調節するサーマルクラウン制御とが
行われる。
例えば、このサーマルクラウン制御は圧延ロー
ルのバレル軸方向に並置したロール冷却媒体噴射
ノズルからのロール冷却媒体（ロールクーラン
ト）の噴射量を圧延材の実形状（平坦度）と目標
形状の偏差に対応して制御するものであるので、
圧延材の実形状を正しく検出する必要がある。
形状検出器としては、従来、第１図に示す如
く、圧電形や磁歪形の感圧部材１1，１2…１(x)…
を多数軸方向に並置してなるローラ（センサーロ
ーラ）１０が用いられ、各感圧部材１(x)が出力す
る形状パラメータTr(x)（圧延材Ｓの軸方向荷重
に比例する電気信号）は形状信号処理装置２０の
関数化処理装置２１にサンプリング入力される。
関数化処理装置２１では形状パラメータTr(x)か
ら圧延材の形状をｎ次の関数で近似して関数出力
ε(n)を比較器２２に送出する。比較器２２は関数
ε(n)を基準形状設定器２３で設定した目標形状パ
ラメータＭと比較してその偏差を形状制御信号と
して図示しないロール冷却媒体供給制御器に送出
し、該ロール冷却媒体供給制御器は上記偏差に基
づいて各ロール冷却媒体噴射ノズルからのロール
クーラントの噴射量を演算して各ロール冷却媒体
噴射ノズルの入口配管に設けられた流量調節弁の
開度を指令する弁開度制御信号を発生する。
今、１つの感圧部材１(x)が受けるラジアル荷重
（半径中心方向に向く力）をTr〔Kgf〕とすると、
Tr＝2Tsin（α／２） …(a)
ここに、Ｔ：１つの感圧部材に負荷される張力
α：巻付け角度〔°〕
また、１つの感圧部材１(x)に負荷される張力Ｔ
は、
Ｔ＝σh2Ｗ …(b)
ここに、h2：検出部の板厚〔mm〕
Ｗ：１つの感圧部材１(x)の幅〔mm〕
σ＝εE …(c)
ε：ひずみ（平坦度）
Ｅ：圧延材のヤング率〔Kgf／mm2〕
上記(a)式、(b)式および(c)式からストリツプＳの
平坦度εは、
平坦度ε＝Tr／2Eh2Wsinα／２ (d)
のように求めることができる。
しかし、ストリツプＳにシートクラウンがある
場合には、巻取リール上のストリツプコイルが、
第３図に示すように、樽状になり、ストリツプの
形状検出器への巻付け角度がストリツプ幅方向中
央部と端部とで異なるようになり、ストリツプの
全幅に作用する張力が同じであつても、検出され
る軸方向荷重は上記中央部と端部とで異なる結果
となるので、形状検出精度が低下し、精度のよい
形状制御を行なうことができなくなるという問題
があつた。
〔発明の目的〕
本発明は、上記した従来の問題点に鑑みてなさ
れたもので、圧延材のシートクラウン率を導入
し、このシートクラウン率により巻取リールの各
感圧部材の測定ゾーンに対応する位置の部分コイ
ル径を演算し、該部分コイル径を受けて圧延材の
上記巻取リールに対する巻付け角度を演算させ
て、該巻付け角度により上記感圧部材の出力を補
正する構成とすることにより、ストリツプにシー
トクラウンがあつても精度の高い形状検出を行な
うことができる圧延材の形状検出方法を提供する
ことを目的とする。
〔発明の実施例〕
以下、本発明の一実施例を図面を参照して説明
する。
第２図において、３０は圧延ロール（ワークロ
ール）、４０は巻取リール、４１は回転数検出器、
５０は補正用演算装置であつて、コイル径演算部
５１、コイルクラウン演算部５２、ストリツプ巻
付け角演算部５３及び補正演算部５４を有してい
る。１１は回転数検出器、Ｓは圧延材（ストリツ
プ）である。
コイル径演算部５１は巻取リール４０の回転数
検出器４１が出力する回転数（ストリツプコイル
の回転数）Nrとセンサーローラ１０の回転数検
出器１１が出力する回転数Nsを取込んで、巻取
リール４０上のストリツプコイルＣのコイル径Ｄ
（第３図に示す）を演算する。
Ｄ＝（Ns×ｄ）×１／Nr …(1)
但し、ｄ＝センサーローラ１０の径
コイルクラウン演算部５２では、ストリツプＳ
の幅方向中心から距離ｘだけ離れた位置、即ち、
感圧部材１(x)の測定ゾーンに対応する位置におけ
るコイル径（部分コイル径）Ｄ(x)を演算する。
Ｄ(x)＝Ｄ＋2D×（１＋Sc／100）
×（１−22x2／B2） …(2)
但し、Ｂ：ストリツプの幅
Sc：ストリツプのシートクラウン率
このシートクラウン率Scは、ストリツプの板
断面が第４図のようであるとすると、
Sc＝hc−he／he×100 …(イ)
で表現される値であり、上記板断面は二次関数で
表現することができるので、ストリツプの幅方向
中心から距離ｘにおける板厚hxは、
hx＝he＋2hc×（１−22x2／B2） …(ロ)
となる。
この(ロ)式に上記(イ)式を代入すると、
hx＝he＋2hc×（１−22x2／B2）
×（１＋Sc／100） …(ハ)
ストリツプコイルＣはシートクラウンが積層さ
れた断面となる。即ち、コイル断面は上記板断面
と相似形になるとすると、
Dc：Ｄ(x)：Ｄ＝hc：hx：he …(ニ)
の関係があるので、上記(ハ)式から、上記(2)式が成
立する。
センサーローラ巻付け角演算部５３では、セン
サーローラ１０に対するストリツプＳの巻付け角
度α(x)を演算する。
[Technical Field of the Invention] The present invention relates to a method for detecting the shape of a rolled material, particularly a cold rolled material. [Prior art] In order to control the shape of the rolled material obtained by cold rolling, roll bending control that controls the roll camber by changing the bending load of the rolling rolls (work rolls) and injection of rolling cooling medium are used. Thermal crown control is performed to adjust the injection amount. For example, this thermal crown control adjusts the injection amount of roll cooling medium (roll coolant) from roll cooling medium injection nozzles arranged in parallel in the barrel axis direction of the rolling roll, depending on the deviation between the actual shape (flatness) of the rolled material and the target shape. Since it is controlled by
It is necessary to accurately detect the actual shape of the rolled material. Conventionally, shape detectors include piezoelectric or magnetostrictive pressure sensitive members 1 1 , 1 2 . . . 1(x) . . . as shown in FIG.
A roller (sensor roller) 10 consisting of a large number of rollers (sensor rollers) arranged in parallel in the axial direction is used, and each pressure-sensitive member 1(x) outputs a shape parameter Tr(x) (an electrical signal proportional to the axial load of the rolled material S). is sampled and input to the function processing device 21 of the shape signal processing device 20.
The function processing device 21 approximates the shape of the rolled material by an n-th order function from the shape parameter Tr(x) and sends the function output ε(n) to the comparator 22. The comparator 22 compares the function ε(n) with the target shape parameter M set by the reference shape setting device 23, and sends the deviation as a shape control signal to a roll cooling medium supply controller (not shown) to control the roll cooling medium supply. The controller calculates the amount of roll coolant to be injected from each roll coolant injection nozzle based on the above deviation, and commands the opening degree of the flow rate control valve provided in the inlet piping of each roll coolant injection nozzle. Generates control signals. Now, if the radial load (force directed toward the radial center) that one pressure-sensitive member 1(x) receives is Tr [Kgf], then Tr = 2Tsin (α/2) ... (a) where, T: one Tension applied to the pressure-sensitive member α: Wrapping angle [°] Also, tension T applied to one pressure-sensitive member 1(x)
T=σh 2 W …(b) Here, h 2 : Thickness of the detection part [mm] W: Width of one pressure-sensitive member 1(x) [mm] σ=εE …(c) ε: Strain (flatness) E: Young's modulus of rolled material [Kgf/mm 2 ] From the above equations (a), (b) and (c), the flatness ε of the strip S is: Flatness ε=Tr/2Eh 2 It can be calculated as Wsinα/2 (d). However, if the strip S has a sheet crown, the strip coil on the take-up reel will
As shown in Figure 3, the strip becomes barrel-shaped, and the angle at which the strip is wound around the shape detector differs between the center and the ends in the strip width direction, and the tension acting on the entire width of the strip is the same. However, since the detected axial load is different between the center portion and the end portion, there is a problem that the shape detection accuracy is lowered and accurate shape control cannot be performed. [Object of the Invention] The present invention has been made in view of the above-mentioned conventional problems, and it introduces a sheet crown ratio of the rolled material, and uses this sheet crown ratio to determine the measurement zone of each pressure-sensitive member on the take-up reel. A partial coil diameter at a corresponding position is calculated, a winding angle of the rolled material with respect to the take-up reel is calculated based on the partial coil diameter, and the output of the pressure sensitive member is corrected based on the winding angle. It is an object of the present invention to provide a method for detecting the shape of a rolled material, which allows highly accurate shape detection even if the strip has a sheet crown. [Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. In FIG. 2, 30 is a rolling roll (work roll), 40 is a take-up reel, 41 is a rotation speed detector,
Reference numeral 50 denotes a correction calculation device, which includes a coil diameter calculation section 51, a coil crown calculation section 52, a strip winding angle calculation section 53, and a correction calculation section 54. 11 is a rotation speed detector, and S is a rolled material (strip). The coil diameter calculation section 51 takes in the rotation speed Nr output by the rotation speed detector 41 of the take-up reel 40 (rotation speed of the strip coil) and the rotation speed Ns output from the rotation speed detector 11 of the sensor roller 10, and calculates the winding. Coil diameter D of strip coil C on take-up reel 40
(shown in FIG. 3) is calculated. D=(Ns×d)×1/Nr...(1) However, d=diameter of the sensor roller 10 In the coil crown calculation section 52, the strip S
A position a distance x away from the center in the width direction, that is,
A coil diameter (partial coil diameter) D(x) at a position corresponding to the measurement zone of the pressure sensitive member 1(x) is calculated. D(x)=D+2D×(1+Sc/100)×(1−2 2 x 2 /B 2 ) …(2) However, B: Width of the strip Sc: Seat crown ratio of the strip This seat crown ratio Sc is the If the cross-section of the plate is as shown in Figure 4, then the value is expressed as Sc=hc-he/he×100...(a), and the cross-section of the plate above can be expressed by a quadratic function, so The plate thickness hx at a distance x from the center of the strip in the width direction is hx=he+2hc×(1-2 2 x 2 /B 2 ) (b). Substituting the above equation (A) into this equation (B), we get hx=he+2hc×(1-2 2 x 2 /B 2 )×(1+Sc/100)...(C) The strip coil C has a cross section where the sheet crowns are laminated. becomes. That is, assuming that the coil cross section has a similar shape to the plate cross section above, there is the relationship Dc:D(x):D=hc:hx:he...(d), so from equation (c) above, the above (2) The formula holds true. The sensor roller winding angle calculating section 53 calculates the winding angle α(x) of the strip S with respect to the sensor roller 10.
【表】
但し、Ｌ：巻取リールとセンサーローラとの中
心間距離
Ｈ：巻取リールの中心高さとセンサーロ
ーラの中心高さとの距離
この(3)式を第５図について説明する。同図にお
いて、
＝√2＋2
＝Ｄ−ｄ／２
よつて、[Table] However, L: Distance between the centers of the take-up reel and the sensor roller H: Distance between the center height of the take-up reel and the center height of the sensor roller This equation (3) will be explained with reference to FIG. In the same figure, =√ 2 + 2 =D-d/2 Therefore,
本発明は以上説明した通り、巻取リール上のセ
ンサーローラ各感圧部材の測定ゾーンに対応する
コイル部分の巻付け角度をストリツプのシートク
ラウン率を導入して演算し、この巻付け角度によ
り上記感圧部材の出力を補正する構成としたこと
により、各感圧部材の上記補正された出力はそれ
ぞれの測定ゾーンのストリツプ張力に比例した値
となるので、ストリツプにシートクラウンがあつ
てもその形状を忠実に検出することができ、精度
の良い形状制御を実現することが可能となる。
As explained above, the present invention calculates the winding angle of the coil portion corresponding to the measurement zone of each pressure-sensitive member of the sensor roller on the take-up reel by introducing the sheet crown ratio of the strip, and uses this winding angle as described above. By using a configuration that corrects the output of the pressure-sensitive member, the corrected output of each pressure-sensitive member becomes a value proportional to the strip tension of each measurement zone, so even if the strip has a seat crown, its shape can be detected faithfully, making it possible to achieve highly accurate shape control.
第１図は従来の形状検出方法を説明するための
ブロツク図、第２図は本発明の実施例を示すブロ
ツク図、第３図はシートクラウンのあるストリツ
プコイルを示す図、第４図はシートクラウンを説
明するための断面図、第５図は上記実施例におけ
る演算式を説明するための図である。
１1，１2…１(x)……感圧部材、１０……センサ
ーローラ、１１，４１……回転数検出器、４０…
…巻取リール、５０……補正用演算装置、５１…
…コイル径演算部１，５２……コイルクラウン演
算部、５３……ストリツプ巻付け角演算部、５４
……補正演算部。
Fig. 1 is a block diagram for explaining a conventional shape detection method, Fig. 2 is a block diagram showing an embodiment of the present invention, Fig. 3 is a diagram showing a strip coil with a seat crown, and Fig. 4 is a diagram showing a strip coil with a seat crown. FIG. 5 is a cross-sectional view for explaining the calculation formula in the above embodiment. 1 1 , 1 2 ... 1 (x) ... pressure sensitive member, 10 ... sensor roller, 11, 41 ... rotation speed detector, 40 ...
...Take-up reel, 50...Calculation device for correction, 51...
... Coil diameter calculation section 1, 52 ... Coil crown calculation section, 53 ... Strip winding angle calculation section, 54
...Correction calculation section.
Claims (1)
なり各感圧部材がこれに作用する圧延材のラジア
ル荷重を検出する形状検出用のセンサーローラを
用い、該センサーローラに圧延材を巻付けて当該
センサーローラ上を走行する上記圧延材の幅方向
張力分布を測定し、該張力分布から圧延材の平坦
度を検出する形状検出方法において、 圧延材を巻取る巻取リール上のコイルの実測ま
たは演算されたコイル径と予め設定された圧延材
のシートクラウン率により上記巻取リール上のコ
イルの上記各感圧部材の測定位置に対応するコイ
ル位置におけるコイル径を演算するコイルクラウ
ン演算部と、該コイル径を受けて圧延材の上記巻
取リールに対する巻付け角度を演算する巻付け角
演算部とを設け、該巻付け角度により上記感圧部
材の出力を補正することを特徴とする圧延材の形
状検出方法。[Claims] 1. A sensor roller for detecting the shape of a rolled material that is equipped with a plurality of pressure-sensitive members arranged in parallel in the width direction, and each pressure-sensitive member detects the radial load of the rolled material acting on the sensor roller. In the shape detection method of winding the rolled material around a roller and measuring the tension distribution in the width direction of the rolled material running on the sensor roller, and detecting the flatness of the rolled material from the tension distribution, the winding for winding the rolled material Using the measured or calculated coil diameter of the coil on the take-up reel and the preset sheet crown ratio of the rolled material, determine the coil diameter at the coil position corresponding to the measurement position of each pressure-sensitive member of the coil on the take-up reel. A coil crown calculation unit that calculates a coil crown and a winding angle calculation unit that calculates a winding angle of the rolled material with respect to the winding reel based on the coil diameter are provided, and the output of the pressure sensitive member is corrected based on the winding angle. A method for detecting the shape of a rolled material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59191594A JPS6171127A (en) | 1984-09-14 | 1984-09-14 | Shape detecting method of rolled stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59191594A JPS6171127A (en) | 1984-09-14 | 1984-09-14 | Shape detecting method of rolled stock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6171127A JPS6171127A (en) | 1986-04-12 |
| JPH0470088B2 true JPH0470088B2 (en) | 1992-11-10 |
Family
ID=16277233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59191594A Granted JPS6171127A (en) | 1984-09-14 | 1984-09-14 | Shape detecting method of rolled stock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6171127A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414188A (en) * | 2015-12-22 | 2016-03-23 | 江苏大力神科技股份有限公司 | Strip shape roller used for accurately controlling strip shape |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5343575A (en) * | 1976-10-01 | 1978-04-19 | Nippon Steel Corp | Compensating method of coil winding diameter at rolled form detection |
| JPS554013A (en) * | 1978-06-24 | 1980-01-12 | Nippon Telegr & Teleph Corp <Ntt> | Distortion-free reflecting mirror |
-
1984
- 1984-09-14 JP JP59191594A patent/JPS6171127A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5343575A (en) * | 1976-10-01 | 1978-04-19 | Nippon Steel Corp | Compensating method of coil winding diameter at rolled form detection |
| JPS554013A (en) * | 1978-06-24 | 1980-01-12 | Nippon Telegr & Teleph Corp <Ntt> | Distortion-free reflecting mirror |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6171127A (en) | 1986-04-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |