JPH06273162A - Flatness measuring device - Google Patents
Flatness measuring deviceInfo
- Publication number
- JPH06273162A JPH06273162A JP8527093A JP8527093A JPH06273162A JP H06273162 A JPH06273162 A JP H06273162A JP 8527093 A JP8527093 A JP 8527093A JP 8527093 A JP8527093 A JP 8527093A JP H06273162 A JPH06273162 A JP H06273162A
- Authority
- JP
- Japan
- Prior art keywords
- distance
- distance measuring
- flatness
- steel plate
- measuring unit
- 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
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
(57)【要約】
【目的】 走行中の鋼板１の平坦度をオンラインで高精
度に測定する。測定装置を小型軽量にし、且つ安価にす
る。
【構成】 パスラインの下方に第１測距ユニットＵ０を
設け、上方に第２測距ユニットＵ１，Ｕ２を設ける。第
１測距ユニットＵ０は鋼板１の板幅方向に配列された複
数の距離計Ａ０〜Ｅ０を有し、第２測距ユニットＵ１，
Ｕ２は、鋼板１の長手方向に配列された複数の距離計Ｂ
１〜Ｂ３，Ｄ１〜Ｄ３を有する。距離計Ａ０〜Ｅ０，Ｂ
１〜Ｂ３，Ｄ１〜Ｄ３は剛性梁ｕ０，ｕ１，ｕ２に取り
付けられている。
(57) [Summary] [Purpose] Highly accurate online measurement of the flatness of the running steel plate 1. The measuring device is small and lightweight, and is inexpensive. [Structure] A first distance measuring unit U0 is provided below the pass line, and second distance measuring units U1 and U2 are provided above the pass line. The first distance measuring unit U0 has a plurality of distance meters A0 to E0 arranged in the plate width direction of the steel plate 1, and the second distance measuring unit U1,
U2 is a plurality of rangefinders B arranged in the longitudinal direction of the steel plate 1.
1 to B3 and D1 to D3. Rangefinder A0-E0, B
1 to B3 and D1 to D3 are attached to the rigid beams u0, u1 and u2.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、長手方向に走行する鋼
帯等の帯状体の表面平坦度を測定する平坦度測定装置に
関し、更に詳しくは帯状体までの距離を測定する複数の
距離計を用いて平坦度の測定を行う平坦度測定装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flatness measuring device for measuring the surface flatness of a strip such as a steel strip running in the longitudinal direction, and more particularly to a plurality of rangefinders for measuring the distance to the strip. The present invention relates to a flatness measuring device that measures flatness by using.
【０００２】[0002]
【従来の技術】熱間圧延ラインを走行する熱延鋼板のよ
うな走行中の鋼板の平坦度を測定する装置としては、光
切断法によるもの、モアレ法によるもの、鋼板表面に対
向させた複数の距離計を用いるものなどがある。これら
のうち比較的精度の高い装置は、特開平３−２４９５１
４号公報および特開平３−１１１７１１号公報に記載さ
れているような複数の距離計を用いるものである。2. Description of the Related Art As a device for measuring the flatness of a running steel plate such as a hot rolled steel plate running on a hot rolling line, there are a light cutting method, a moire method, and a plurality of devices facing the steel sheet surface. There are things that use the range finder. Among these, a device with relatively high accuracy is disclosed in Japanese Patent Application Laid-Open No. 3-24951.
It uses a plurality of rangefinders as described in JP-A No. 4 and JP-A-3-111711.
【０００３】複数の距離計を用いる平坦度測定装置の概
要を図１により説明する。複数の距離計２a 〜３e は、
長手方向に走行する鋼板１の表面に対向し、且つ板幅方
向に配列されている。距離計２a 〜２e が出力する鋼板
表面までの距離Ｌa 〜Ｌe は演算手段３に入力される。
演算手段３はこの距離Ｌa 〜Ｌe に基づいて鋼板１の板
幅方向の反りを計算する。また、鋼板１が単位距離Δｄ
を移動するごとに距離Ｌa 〜Ｌe を取り込むことによ
り、鋼板１の長手方向のうねりを計算する。かくして理
論上は鋼板１の平坦度が求まる。An outline of a flatness measuring device using a plurality of distance meters will be described with reference to FIG. The plurality of rangefinders 2 a to 3 e are
They are arranged in the plate width direction so as to face the surface of the steel plate 1 running in the longitudinal direction. Distance L a ~L e to the steel sheet surface to a distance meter 2 a to 2 e is output is input to the arithmetic unit 3.
Calculation means 3 calculates the crook of the steel sheet 1 on the basis of the distance L a ~L e. Further, the steel plate 1 has a unit distance Δd.
By taking the distance L a ~L e each time to move, to calculate the longitudinal undulation of the steel sheet 1. Thus, theoretically, the flatness of the steel sheet 1 can be obtained.
【０００４】[0004]
【発明が解決しようとする課題】ところが実際のライン
では、鋼板１の上下動などによるパスライン変動が避け
られない。そのため、距離計２ａ〜３ｅの出力に基づい
て算出した平坦度から、このパスライン変動による測定
誤差を取り除く必要がある。特開平３−２４９５１４号
公報および特開平３−１１１７１１号公報に記載された
装置では、この補正を積分やフィルターにより行ってい
る。しかし、このような信号処理による補正では、測定
精度は高々１ｍｍでしかない。However, in the actual line, the change of the pass line due to the vertical movement of the steel sheet 1 is unavoidable. Therefore, it is necessary to remove the measurement error due to this pass line variation from the flatness calculated based on the outputs of the rangefinders 2a to 3e. In the devices described in Japanese Patent Laid-Open Nos. 3-249514 and 3-111711, this correction is performed by integration or a filter. However, with such correction by signal processing, the measurement accuracy is at most 1 mm.
【０００５】走行中の鋼板の表面平坦度を更に高い精度
で測定するためには、図２に示すように、定盤４上に多
数の距離計２a1〜２e1，２a2〜２e2，２a3〜２e3をアレ
イ状に配列した距離ユニットを用いる必要がある。これ
を用いて瞬間瞬間に鋼板１までの距離を同時測定すれ
ば、パスライン変動に無関係に鋼板１の平坦度を測定す
ることができる。しかし、実際のラインでは測距エリア
が例えば幅５ｍ×長さ３ｍと非常に広く、そのような広
さの定盤４を変形なくライン中に設置し又保持し続ける
ことは不可能である。そのため、定盤４の変形による測
定誤差が避けられず、測定精度を0.１ｍｍ以下にするこ
とは困難である。In order to measure the surface flatness of a running steel plate with higher accuracy, as shown in FIG. 2, a large number of rangefinders 2 a1 to 2 e1 , 2 a2 to 2 e2 are mounted on the surface plate 4. It is necessary to use a distance unit in which 2 a3 to 2 e3 are arranged in an array. If the distance to the steel sheet 1 is simultaneously measured using this, the flatness of the steel sheet 1 can be measured irrespective of the pass line variation. However, in an actual line, the distance measuring area is very wide, for example, 5 m wide and 3 m long, and it is impossible to install and maintain the surface plate 4 having such an area in the line without deformation. Therefore, a measurement error due to the deformation of the surface plate 4 cannot be avoided, and it is difficult to set the measurement accuracy to 0.1 mm or less.
【０００６】また、このような装置は非常に大きく、重
量も嵩み、更には多数の距離計を使用することからコス
トも嵩み、実ラインへの適用ははなはだ困難である。[0006] Further, such a device is very large, heavy, and costly due to the use of a large number of rangefinders, and it is very difficult to apply it to an actual line.
【０００７】本発明の目的は、定盤上に多数の距離計を
アレイ状に配列した装置よりも更に高精度の測定がで
き、しかもこの装置より小型軽量で経済性も良好な平坦
度測定装置を提供することにある。An object of the present invention is to provide a flatness measuring device capable of more highly accurate measurement than a device in which a large number of rangefinders are arranged in an array on a surface plate, and which is smaller in size and lighter in weight and more economical. To provide.
【０００８】[0008]
【課題を解決するための手段】本発明の平坦度測定装置
は、長手方向に移動する帯状体の一方の表面に対向して
その表面までの距離を測定する複数の距離計を有し、そ
の距離計を帯状体の幅方向に並べて剛性梁に取り付けた
第１測距ユニットと、前記帯状体を挟んで第１測距ユニ
ットの反対側に帯状体の幅方向に間隔をあけて配置さ
れ、それぞれが帯状体の他方の表面に対向してその表面
までの距離を測定する複数の距離計を有し、その距離計
を帯状体の移動方向に並べて剛性梁に取り付けた複数の
第２測距ユニットと、第１測距ユニットおよび第２測距
ユニットの各距離計が測定する帯状体までの距離に基づ
いて帯状体の２次元的な平坦度を算出し、且つその演算
された平坦度に第２測距ユニットにおける剛性梁の傾斜
による補正を加える演算手段とを具備することを特徴と
する。The flatness measuring apparatus of the present invention has a plurality of rangefinders which face one surface of a strip moving in the longitudinal direction and measure the distance to the surface. A first distance measuring unit in which rangefinders are arranged in the width direction of the belt-shaped body and attached to a rigid beam; and a distance measuring unit is arranged on the opposite side of the first distance measuring unit with the belt-shaped member interposed therebetween in the width direction of the belt-shaped body, A plurality of second distance measuring devices, each having a plurality of rangefinders facing the other surface of the strip and measuring a distance to the surface, and the rangefinders are arranged in the moving direction of the strip and attached to the rigid beam. The unit and the two-dimensional flatness of the band-shaped body are calculated based on the distances to the band-shaped body measured by the rangefinders of the first distance-measuring unit and the second distance-measuring unit, and the calculated flatness is calculated. Correction by the inclination of the rigid beam in the second ranging unit Characterized by comprising a calculation means.
【０００９】[0009]
【作用】第１測距ユニットにより帯状体幅方向の反りが
測定される。第２測距ユニットにより帯状体長手方向の
うねりが測定される。それぞれの測定データを組合せ、
且つ帯状体が単位距離を移動するごとに測定を繰り返せ
ば、定盤上に多数の距離計をアレイ状に配列した装置と
同様に２次元的な平坦度測定が行われる。Operation: The first distance measuring unit measures the warp in the width direction of the strip. The waviness in the longitudinal direction of the strip is measured by the second distance measuring unit. Combining each measurement data,
Moreover, if the measurement is repeated every time the strip moves a unit distance, the two-dimensional flatness measurement is performed as in the device in which a large number of rangefinders are arrayed on the surface plate.
【００１０】ここで、第１測距ユニットにおける複数の
距離計は剛性梁に取り付けられており、第２測距ユニッ
トにおける複数の距離計も剛性梁に取り付けられてい
る。剛性梁は定盤のような大きなそれ自体の変形がな
い。そのため、全ての距離計の位置が固定される。しか
も、帯状体の幅方向に配置された複数の第２測距ユニッ
トについては、それぞれの剛性梁の傾斜が補正される。Here, the plurality of distance meters in the first distance measuring unit are attached to the rigid beam, and the plurality of distance meters in the second distance measuring unit are also attached to the rigid beam. Rigid beams do not have such large deformations as surface plates. Therefore, the positions of all rangefinders are fixed. Moreover, with respect to the plurality of second distance measuring units arranged in the width direction of the strip, the inclination of each rigid beam is corrected.
【００１１】従って、変形のない定盤上に多数の距離計
をアレイ状に配列した理想的ユニットを用いた装置と同
程度の高精度な測定が可能となる。Therefore, it is possible to perform high-accuracy measurement as high as an apparatus using an ideal unit in which a large number of rangefinders are arranged in an array on a surface plate without deformation.
【００１２】[0012]
【実施例】以下に本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１３】本発明の１実施例を図３に示す。本測定装
置は、水平方向に走行する鋼板１の板幅方向の反りを測
定するための１つの第１測距ユニットＵ０と、鋼板１の
長手方向のうねりを測定するための複数の第２測距ユニ
ットＵ１，Ｕ２とを具備している。One embodiment of the present invention is shown in FIG. The present measuring device includes one first distance measuring unit U0 for measuring the warp of the steel plate 1 traveling in the horizontal direction in the plate width direction and a plurality of second measuring units for measuring the waviness of the steel plate 1 in the longitudinal direction. Distance units U1 and U2 are provided.
【００１４】第１測距ユニットＵ０はパスラインの下方
にある。このユニットは鋼板１の板幅方向に比較的密な
ピッチで配列された複数の距離計Ａ０〜Ｅ０を有する。
距離計Ａ０〜Ｅ０は板幅方向に延びる剛性梁ｕ０に取り
付けられている。距離計Ａ０〜Ｅ０の板幅方向における
取付位置をＡ位置〜Ｅ位置と称す。The first distance measuring unit U0 is below the pass line. This unit has a plurality of distance meters A0 to E0 arranged at a relatively dense pitch in the plate width direction of the steel plate 1.
The rangefinders A0 to E0 are attached to the rigid beam u0 extending in the plate width direction. The mounting positions of the distance meters A0 to E0 in the plate width direction are referred to as positions A to E.
【００１５】複数の第２測距ユニットＵ１，Ｕ２は、パ
スラインの上方にあって、鋼板１の板幅方向に比較的粗
なピッチで配列されている。The plurality of second distance measuring units U1 and U2 are arranged above the pass line and arranged at a relatively coarse pitch in the plate width direction of the steel plate 1.
【００１６】第２測距ユニットＵ１は、鋼板１の長手方
向に比較的密なピッチで配列された複数の距離計Ｂ１〜
Ｂ３を有する。距離計Ｂ１〜Ｂ３は板幅方向のＢ位置に
あり、その位置で鋼板１の長手方向に延びる剛性梁ｕ１
に取り付けられている。The second distance measuring unit U1 comprises a plurality of distance meters B1 to B1 arranged in the longitudinal direction of the steel plate 1 at a relatively dense pitch.
With B3. The rangefinders B1 to B3 are located at the position B in the plate width direction, and the rigid beam u1 extending in the longitudinal direction of the steel plate 1 at that position.
Is attached to.
【００１７】第２測距ユニットＵ２は、上記第２測距ユ
ニットＵ１と同様、鋼板１の長手方向に配列された複数
の距離計Ｄ１〜Ｄ３を有する。距離計Ｄ１〜Ｄ３は板幅
方向のＤ位置にあり、その位置で鋼板１の長手方向に延
びる剛性梁ｕ２に取り付けられている。The second distance measuring unit U2, like the second distance measuring unit U1, has a plurality of distance meters D1 to D3 arranged in the longitudinal direction of the steel plate 1. The distance meters D1 to D3 are located at the position D in the plate width direction, and are attached to the rigid beam u2 extending in the longitudinal direction of the steel plate 1 at that position.
【００１８】距離計Ｂ１〜Ｂ３と距離計Ｄ１〜Ｄ３は鋼
板１の長手方向において対応した位置にあり、その位置
を位置〜位置と称す。The distance meters B1 to B3 and the distance meters D1 to D3 are located at corresponding positions in the longitudinal direction of the steel sheet 1, and the positions are referred to as positions to positions.
【００１９】また、第１測距ユニットＵ０の距離計Ａ０
〜Ｅ０は、長手方向の位置にあり、従って第２測距ユ
ニットＵ１の距離計Ｂ１は距離計Ｂ０に対応している。
同様に、第２測距ユニットＵ２の距離計Ｄ１は距離計Ｄ
０に対応している。The distance meter A0 of the first distance measuring unit U0
˜E0 are located in the longitudinal direction, and therefore the distance meter B1 of the second distance measuring unit U1 corresponds to the distance meter B0.
Similarly, the rangefinder D1 of the second range finding unit U2 is the rangefinder D
Corresponds to 0.
【００２０】距離計Ａ０〜Ｅ０，Ｂ１〜Ｂ３，Ｄ１〜Ｄ
３は、いずれも鋼板１の表面までの距離を測定する。そ
の測定データは演算手段Ｃに入力される。演算手段Ｃは
次のような手順で鋼板の平坦度を求める。Rangefinders A0-E0, B1-B3, D1-D
All 3 measure the distance to the surface of the steel plate 1. The measurement data is input to the calculating means C. The calculation means C obtains the flatness of the steel sheet by the following procedure.
【００２１】位置において距離計Ａ０〜Ｅ０が測定す
る鋼板１の下面までの距離ＬA0〜ＬE0に基づいて、鋼板
１の板幅方向の反りを求める。鋼板１上の各測定点が
位置に来た時点で、距離計Ａ０〜Ｅ０が測定する鋼板１
の下面までの距離ＬA0′〜ＬE0′に基づいて、鋼板１の
板幅方向の反りを求める。前記各測定点が位置に来た
時点で、距離計Ａ０〜Ｅ０が測定する鋼板１の下面まで
の距離ＬA0″〜ＬE0″に基づいて、鋼板1 の板幅方向の
そりを求める。また各時点で、距離計Ｂ１〜Ｂ３，Ｄ１
〜Ｄ３が測定する鋼板１の上面までの距離に基づいて、
鋼板１の長手方向のうねりを求める。これを継続するこ
とにより、鋼板１の平坦度が２次元的に測定される。The warp in the plate width direction of the steel plate 1 is obtained based on the distances L A0 to L E0 to the lower surface of the steel plate 1 measured by the distance meters A0 to E0 at the positions. Steel plate 1 measured by distance meters A0 to E0 at the time when each measurement point on steel plate 1 comes to a position
The warp of the steel plate 1 in the plate width direction is obtained based on the distances L A0 ′ to L E0 ′ to the lower surface of the plate. When each of the measurement points comes to the position, the warp of the steel plate 1 in the plate width direction is obtained based on the distance L A0 ″ to L E0 ″ to the lower surface of the steel plate 1 measured by the distance meters A0 to E0 . Also, at each time point, rangefinders B1 to B3, D1
~ Based on the distance to the upper surface of the steel plate 1 measured by D3,
The waviness of the steel sheet 1 in the longitudinal direction is obtained. By continuing this, the flatness of the steel plate 1 is two-dimensionally measured.
【００２２】ここで距離計Ａ０〜Ｅ０が測定する距離
（ＬA0〜ＬE0），（ＬA0′〜ＬE0′），（ＬA0″〜
ＬE0″) を主体として鋼板1 の平坦度を測定する場合
は、うねりを測定するための第２測距ユニットは２組程
度でよい。また、第２測距ユニットを多くし、そのデー
タを主体として鋼板１の平坦度を測定してもよい。その
場合、反りを測定するための第１測距ユニットの距離計
は、鋼板１の板幅方向のそりを精度よく近似できる程度
の数があればよい。いずれにしても、定盤上に多数の距
離計をアレイ状に配列した測距ユニットと同様に２次元
的な平坦度測定を行うことができる。[0022] The distance here in the distance meter A0~E0 measures (L A0 ~L E0), ( L A0 '~L E0'), (L A0 "~
When the flatness of the steel sheet 1 is measured mainly by L E0 ″ ) , the number of the second distance measuring units for measuring the waviness may be about two sets. The flatness of the steel plate 1 may be mainly measured, and in that case, the distance meter of the first distance measuring unit for measuring the warp has a number that can accurately approximate the warp of the steel plate 1 in the width direction. In any case, the two-dimensional flatness measurement can be performed similarly to the distance measuring unit in which a large number of rangefinders are arrayed on the surface plate.
【００２３】このような測定で問題となるのは、距離計
の固定と第２測距ユニットの傾斜である。第２測距ユニ
ットの傾斜も厳密には距離計の固定の問題の範疇である
が、ここでは便宜上両者を分けて説明する。A problem with such a measurement is the fixed distance meter and the inclination of the second distance measuring unit. Strictly speaking, the inclination of the second distance-measuring unit is also in the category of the problem of fixing the distance meter, but here, for convenience, both will be described separately.
【００２４】まず距離計の固定について説明する。距離
計Ａ０〜Ｅ０，Ｂ１〜Ｂ３，Ｄ１〜Ｄ３は、剛性梁ｕ
０，ｕ１，ｕ２にそれぞれ取り付けられている。剛性梁
は定盤と異なりそれ自体の変形を無視できる程度に小さ
くできる。そのため、剛性梁ｕ０，ｕ１，ｕ２に取り付
けられた各距離計の相対位置は固定と見做すことができ
る。また、鋼板１の板厚は一定と見做すことができる。First, the fixing of the distance meter will be described. The rangefinders A0-E0, B1-B3, D1-D3 are rigid beams u.
They are attached to 0, u1 and u2, respectively. Unlike a surface plate, a rigid beam can be made small enough to ignore its own deformation. Therefore, the relative position of each rangefinder attached to the rigid beams u0, u1, u2 can be regarded as fixed. Further, the plate thickness of the steel plate 1 can be regarded as constant.
【００２５】従って、対向する距離計Ｂ０，Ｂ１の測定
距離をＬB0，ＬB1とし、鋼板１の板厚をｔ（既知）とす
れば、ＬB0＋ｔ＋ＬB1が距離計Ｂ０，Ｂ１の相対位置と
なり、距離計Ｂ０の位置を原点とすれば、距離計Ｂ１の
位置が仮に動いたとしてもこれを補正することができ
る。また、距離計Ｄ１の位置も同様に補正することがで
きる。かくして、距離計Ａ０，Ｅ０，Ｂ１，Ｄ１の相対
的位置が固定される。Therefore, if the measurement distances of the distance meters B0 and B1 facing each other are L B0 and L B1, and the plate thickness of the steel plate 1 is t (known), L B0 + t + L B1 is the relative position of the distance meters B0 and B1. Therefore, by setting the position of the range finder B0 as the origin, even if the position of the range finder B1 moves, this can be corrected. Further, the position of the distance meter D1 can be similarly corrected. Thus, the relative positions of the rangefinders A0, E0, B1, D1 are fixed.
【００２６】次に第２測距ユニットの傾斜について説明
する。第２測距ユニットＵ１，Ｕ２の剛性梁ｕ１，ｕ２
に傾斜があると、鋼板１の平坦度測定が不正確になる。
この傾斜角は未知数である。従ってこれを設定して、先
で求めた鋼板１の平坦度を補正する必要がある。Next, the inclination of the second distance measuring unit will be described. Rigid beams u1 and u2 of the second distance measuring units U1 and U2
If there is an inclination, the flatness measurement of the steel sheet 1 becomes inaccurate.
This tilt angle is unknown. Therefore, it is necessary to set this value and correct the flatness of the steel sheet 1 previously obtained.
【００２７】ここでもし補正後も剛性梁ｕ１，ｕ２が下
流側に向かって上向きとなる誤差が残っている場合に
は、剛性梁ｕ１，ｕ２に取り付けられた距離計Ｂ１〜Ｂ
３，Ｄ１〜Ｄ３にて走行中の鋼板１までの距離を連続的
に測定し、その測定値を積分すると、鋼板１が上に向か
ってそり上がるような形状になって、その誤差が明らか
となる。逆に下向きの誤差が残っている場合には、測定
値を積分すると、鋼板１が下に向かって走行しテーブル
面を突き抜けるような形状になる。また、剛性梁ｕ１，
ｕ２の各傾斜角に差がある場合には、測定値を積分する
と鋼板１がねじれ続けるような形状になる。If there is still an error that the rigid beams u1 and u2 face upward toward the downstream side even after the correction, the rangefinders B1 to B1 attached to the rigid beams u1 and u2 remain.
3, the distance to the steel plate 1 during running is continuously measured at D1 to D3, and when the measured values are integrated, the steel plate 1 has a shape that rises upward, and the error is apparent. Become. On the contrary, when the downward error remains, integrating the measured values results in a shape in which the steel plate 1 runs downward and penetrates the table surface. In addition, the rigid beam u1,
When there is a difference in each inclination angle of u2, the steel plate 1 has a shape in which the steel plate 1 is continuously twisted when the measured values are integrated.
【００２８】そこで剛性梁ｕ１，ｕ２に取り付けられた
Ｂ１〜Ｂ３，Ｄ１〜Ｄ３で測定される鋼板１の傾斜角お
よび各傾斜角の差の積分値が所定値を超えないように、
剛性梁ｕ１，ｕ２の各傾斜角の設定あるいは測定値の補
正を行うことにより、最終的に距離計Ａ０〜Ｅ０，Ｂ１
〜Ｂ３，Ｄ１〜Ｄ３の全ての位置が相対的に固定され
る。Therefore, the inclination angle of the steel plate 1 measured by B1 to B3 and D1 to D3 attached to the rigid beams u1 and u2 and the integrated value of the difference between the inclination angles do not exceed a predetermined value.
By setting the inclination angles of the rigid beams u1 and u2 or correcting the measured values, the rangefinders A0 to E0 and B1 are finally obtained.
~ B3, all positions of D1 ~ D3 are relatively fixed.
【００２９】かくして、距離エリアが５ｍ×３ｍという
ような広大な場合も、完全固定された変形のない定盤上
に多数の距離計をアレイ状に配列した理想的ユニットに
よって鋼板の平坦度を測定するのと同じ0.１ｍｍ程度の
精度で測定を行うことができる。Thus, even when the distance area is as large as 5 m × 3 m, the flatness of the steel sheet is measured by an ideal unit in which a large number of distance meters are arranged in an array on a surface plate which is completely fixed and has no deformation. The measurement can be performed with the same accuracy of about 0.1 mm as the above.
【００３０】[0030]
【発明の効果】以上の説明から明らかなように、本発明
の平坦度測定装置はオンライン中においても、変形のな
い定盤上に多数の距離計をアレイ状に配列した理想的ユ
ニットによる場合と同程度の精度で帯状体の平坦度を測
定できる。しかも、定盤を使わず複数の剛性梁を使うの
で、理想的ユニットを用いた装置よりも格段に小型軽量
であり設置も容易である。更には、距離計の数が少ない
ために経済性も著しく優れる。As is clear from the above description, the flatness measuring apparatus of the present invention is different from the case of using an ideal unit in which a large number of rangefinders are arranged in an array on a surface plate without deformation even when online. The flatness of the strip can be measured with the same accuracy. Moreover, since a plurality of rigid beams are used without using a surface plate, it is significantly smaller and lighter than an apparatus using an ideal unit and is easy to install. Further, the number of rangefinders is small, so that the economy is remarkably excellent.
【図１】従来装置の概略構成図である。FIG. 1 is a schematic configuration diagram of a conventional device.
【図２】理想的な測距ユニットの概略構成図である。FIG. 2 is a schematic configuration diagram of an ideal distance measuring unit.
【図３】本発明の１実施例を示す平坦度測定装置の概略
構成図である。FIG. 3 is a schematic configuration diagram of a flatness measuring device showing an embodiment of the present invention.
１ 鋼板 Ｕ０ 第１測距ユニット Ｕ１，Ｕ２ 第２測距ユニット ｕ０，ｕ１，ｕ２ 剛性梁 Ａ０〜Ｅ０，Ｂ１〜Ｂ３，Ｄ１〜Ｄ３ 距離計 Ｃ 演算手段 1 Steel plate U0 1st ranging unit U1, U2 2nd ranging unit u0, u1, u2 Rigid beam A0-E0, B1-B3, D1-D3 Distance meter C Computation means
Claims (1)
に対向してその表面までの距離を測定する複数の距離計
を有し、その距離計を帯状体の幅方向に並べて剛性梁に
取り付けた第１測距ユニットと、 前記帯状体を挟んで第１測距ユニットの反対側に帯状体
の幅方向に間隔をあけて配置され、それぞれが帯状体の
他方の表面に対向してその表面までの距離を測定する複
数の距離計を有し、その距離計を帯状体の移動方向に並
べて剛性梁に取り付けた複数の第２測距ユニットと、 第１測距ユニットおよび第２測距ユニットの各距離計が
測定する帯状体までの距離に基づいて帯状体の２次元的
な平坦度を算出し、且つその算出された平坦度に第２測
距ユニットにおける剛性梁の傾斜による補正を加える演
算手段とを具備することを特徴とする平坦度測定装置。1. A rigid beam having a plurality of distance meters facing one surface of a strip moving in the longitudinal direction and measuring a distance to the surface, the distance meters being arranged in the width direction of the strip to form a rigid beam. The attached first distance measuring unit and the first distance measuring unit sandwiched between the first distance measuring unit and the first distance measuring unit are spaced apart in the width direction of the belt, and each face the other surface of the belt. A plurality of second distance measuring units having a plurality of distance measuring devices for measuring the distance to the surface, the distance measuring devices being arranged in the moving direction of the belt-like member and attached to the rigid beam, the first distance measuring unit and the second distance measuring unit. The two-dimensional flatness of the strip is calculated based on the distance to the strip measured by each rangefinder of the unit, and the calculated flatness is corrected by the inclination of the rigid beam in the second ranging unit. Flatness, characterized by comprising: Measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8527093A JPH06273162A (en) | 1993-03-18 | 1993-03-18 | Flatness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8527093A JPH06273162A (en) | 1993-03-18 | 1993-03-18 | Flatness measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06273162A true JPH06273162A (en) | 1994-09-30 |
Family
ID=13853885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8527093A Pending JPH06273162A (en) | 1993-03-18 | 1993-03-18 | Flatness measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06273162A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001004362A (en) * | 1999-06-16 | 2001-01-12 | Nisshin Steel Co Ltd | Method and apparatus for measuring shape of metal plate |
| JP2007286072A (en) * | 2007-08-06 | 2007-11-01 | Kobe Steel Ltd | Method and apparatus for measuring flatness |
| JP2008150663A (en) * | 2006-12-18 | 2008-07-03 | Jfe Steel Kk | Steel strip shape detector |
| WO2013098482A1 (en) | 2011-12-28 | 2013-07-04 | Metso Automation Oy | Measurement of object to be measured |
| CN103353294A (en) * | 2013-07-09 | 2013-10-16 | 太原科技大学 | Device and method for detecting unevenness of section steel |
| CN110411379A (en) * | 2019-07-31 | 2019-11-05 | 合肥微澜特网络科技有限责任公司 | A kind of detection method of computer host box flatness detection |
| CN120313509A (en) * | 2025-06-16 | 2025-07-15 | 中国特种设备检测研究院 | Crane local deformation detection device and method |
-
1993
- 1993-03-18 JP JP8527093A patent/JPH06273162A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001004362A (en) * | 1999-06-16 | 2001-01-12 | Nisshin Steel Co Ltd | Method and apparatus for measuring shape of metal plate |
| JP2008150663A (en) * | 2006-12-18 | 2008-07-03 | Jfe Steel Kk | Steel strip shape detector |
| JP2007286072A (en) * | 2007-08-06 | 2007-11-01 | Kobe Steel Ltd | Method and apparatus for measuring flatness |
| WO2013098482A1 (en) | 2011-12-28 | 2013-07-04 | Metso Automation Oy | Measurement of object to be measured |
| EP2805130B1 (en) * | 2011-12-28 | 2020-05-06 | Valmet Automation Oy | Measurement of object to be measured |
| CN103353294A (en) * | 2013-07-09 | 2013-10-16 | 太原科技大学 | Device and method for detecting unevenness of section steel |
| CN110411379A (en) * | 2019-07-31 | 2019-11-05 | 合肥微澜特网络科技有限责任公司 | A kind of detection method of computer host box flatness detection |
| CN120313509A (en) * | 2025-06-16 | 2025-07-15 | 中国特种设备检测研究院 | Crane local deformation detection device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5753808A (en) | Self-compensating rolling weight deflectometer | |
| US9062963B2 (en) | Thickness measurement system and thickness measurement method | |
| JP3031529B2 (en) | Method and apparatus for measuring sectional dimensions of H-section steel | |
| KR20110039764A (en) | Vision apparatus for measuring steel sheet information and measuring method for steel sheet information | |
| US5465214A (en) | Method of measuring the shape and/or the planarity of a running material, and device for its implementation | |
| JPH07280526A (en) | Thickness measurement method for steel sheet using laser range finder | |
| JP3264210B2 (en) | Roller table pass line measuring device and pass line measuring method | |
| CN113155154A (en) | Error correction method based on attitude and mileage of sensor and camera | |
| CN115727777B (en) | A method for measuring the arc of a sector segment in a continuous casting machine | |
| JPH0460528B2 (en) | ||
| JPH08304068A (en) | Distance measuring device and method | |
| JPH06258027A (en) | Position detecting method of plate member using tv camera | |
| JP3366528B2 (en) | How to measure the profile of long objects | |
| RU2119643C1 (en) | Method determining planeness of moving strip of material | |
| JPH08178643A (en) | Method and apparatus for measuring plate thickness of steel plate | |
| JP2556945B2 (en) | Thickness measuring device | |
| JP5013730B2 (en) | Thickness measuring method and thickness measuring apparatus | |
| JP2001280919A (en) | Apparatus and method for measuring width of rolled material | |
| JP2001124535A (en) | Measuring method of bending of long material | |
| CN217786205U (en) | Aiming imaging device for detecting equal-interval leveling staff | |
| JP2988645B2 (en) | Measurement method of sheet material distortion shape | |
| JPH0735515A (en) | Object diameter measuring device | |
| JPH1035493A (en) | Jig for calibrating out-of-track data of a simple inspection car | |
| JPH06174436A (en) | Method of measuring dimension of shaped steel | |
| JPH04319612A (en) | Apparatus for measuring sectional shape |