JPS6253047B2 - - Google Patents
Info
- Publication number
- JPS6253047B2 JPS6253047B2 JP56043986A JP4398681A JPS6253047B2 JP S6253047 B2 JPS6253047 B2 JP S6253047B2 JP 56043986 A JP56043986 A JP 56043986A JP 4398681 A JP4398681 A JP 4398681A JP S6253047 B2 JPS6253047 B2 JP S6253047B2
- Authority
- JP
- Japan
- Prior art keywords
- measured
- amount
- shaped steel
- deflection
- load
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 41
- 239000010959 steel Substances 0.000 claims description 41
- 238000005452 bending Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【発明の詳細な説明】
この発明は形鋼の曲り測定方法及び装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for measuring bending of section steel.
形鋼製品は通常熱間圧延後冷却されるが、これ
らの過程において製品断面各部の熱容量の違いや
冷却の不均一等により曲りを生ずる。この曲りは
ローラ矯正機あるいはプレス矯正機により矯正さ
れるのが普通である。 Shaped steel products are usually cooled after hot rolling, but during these processes, bending occurs due to differences in heat capacity at various parts of the product cross section, uneven cooling, etc. This bending is usually corrected using a roller straightening machine or a press straightening machine.
しかし平面上に置かれた形鋼製品は自重により
たわみを生ずるため、普通の測定方法では曲り量
の定量的把握は困難である。 However, since shaped steel products placed on a flat surface bend due to their own weight, it is difficult to quantitatively determine the amount of bending using ordinary measurement methods.
そのため従来は、次のような測定方法により曲
り量を測定していた。 Therefore, conventionally, the amount of bending has been measured using the following measurement method.
まず形鋼製品がＨ形鋼や溝形鋼等の90゜転回可
能な断面形状を有する製品の場合、クレーン等に
より製品を90゜転回させ、垂直方向の曲りを水平
方向の曲りにし、これにより自重によるたわみを
なくした上で水系等により測定する。 First, if the shaped steel product has a cross-sectional shape that can be rotated 90 degrees, such as H-shaped steel or channel steel, the product is rotated 90 degrees using a crane, etc., and the vertical bend is turned into a horizontal bend. Measure using a water system, etc. after eliminating deflection due to its own weight.
また製品が鋼矢板等の90゜転回することが困難
な断面形状を有するものである場合には、測定す
る製品の長さにより予め定められた間隔で配設さ
れた２個の支点上に、各々の支点外張り出し長さ
が均等になるように製品を乗せこの時のたわみ量
を測定する。次に該製品をクレーン等により180
゜転回し、同様に支点上に乗せこの時のたわみ量
を測定する。このようにして求めた２つのたわみ
量から曲り量を算出する。 In addition, if the product has a cross-sectional shape that makes it difficult to turn 90 degrees, such as steel sheet piles, the product may be placed on two fulcrums placed at a predetermined interval depending on the length of the product to be measured. Place the product so that the length of each fulcrum is equal and measure the amount of deflection. Next, the product is removed by crane etc.
Rotate it by 2 degrees, place it on the fulcrum in the same way, and measure the amount of deflection at this time. The amount of bending is calculated from the two amounts of deflection obtained in this way.
しかし上記したような従来の測定方法ではいず
れもクレーン等の装置を使用する必要があるため
オンラインでの迅速な測定が出来なかつた。また
そのためにオフラインにおける抜取検査とせざる
を得ず、製品すべての検査を行い品質保証をする
ことが困難である等の欠点があつた。 However, all of the conventional measurement methods described above require the use of equipment such as a crane, making it impossible to perform quick online measurements. In addition, this necessitated off-line sampling inspection, which had drawbacks such as the difficulty of inspecting all products to ensure quality.
本発明は上記した従来法の欠点に鑑みてなされ
たもので、所定の間隔を有する支点の上に被測定
形鋼を載置し、該被測定形鋼のたわみ量を測定
し、更に該被測定形鋼に所定の加重をかけた状態
でそのたわみ量を測定し、前記夫々測定した２つ
のたわみ量から被測定形鋼の真の曲り量を算出す
ることを基本的な特徴とするものである。 The present invention was made in view of the above-mentioned drawbacks of the conventional method, and involves placing a shaped steel to be measured on fulcrums having a predetermined interval, measuring the amount of deflection of the shaped steel to be measured, and further measuring the amount of deflection of the shaped steel to be measured. The basic feature is that the amount of deflection is measured with a predetermined load applied to the measured section steel, and the true amount of bending of the section steel to be measured is calculated from the two amounts of deflection measured respectively. be.
本発明においては、まず第１図に示すように被
測定形鋼Ａを支点Ｂ，Ｂ上に載置する。この形鋼
Ａの重量Ｗ及び全長ｌは予め測定しておく。また
支点Ｂ，Ｂからはみ出すオーバーハング長さl1，
l1は同一の長さとし、この長さl1を予め決めてお
く。この状態でたわみ量δ１を測定する。このた
わみ量δ１は形鋼Ａの曲り量δと自重によるたわ
み量δcpとの合計となつている。 In the present invention, first, the shaped steel A to be measured is placed on fulcrums B, B as shown in FIG. The weight W and overall length l of this shaped steel A are measured in advance. Also, the overhang length l 1 that protrudes from the fulcrum B,
l 1 has the same length, and this length l 1 is determined in advance. In this state, the amount of deflection δ 1 is measured. This deflection amount δ 1 is the sum of the bending amount δ of the section steel A and the deflection amount δ cp due to its own weight.
次に形鋼Ａに所定の荷重Ｐをかけ、この状態で
たわみ量δ３を測定する。 Next, a predetermined load P is applied to the section steel A, and the amount of deflection δ3 is measured in this state.
一方、形鋼Ａの自重によるたわみ量δcpは理論
的に下式で示される。 On the other hand, the amount of deflection δ cp of the section steel A due to its own weight is theoretically expressed by the following formula.
δcp＝ｗ／３８４ＥＩl2 2（5l2 2−24l1 2） ……
ここで、
Ｅ：ヤング率（Kg／cm2）
Ｉ：断面２次モーメント（cm４）
ｗ：単位長さ当り重量（Kg／cm）
また自重のない両端支持ハリの中央部に荷重Ｐ
を加えた時のたわみ量δPは、
δP＝Ｐ／４８ＥＩl2 3 ……
で表わされる。 δ cp = w/384EIl 2 2 (5l 2 2 −24l 1 2 )... Here, E: Young's modulus (Kg/cm 2 ) I: Second moment of area (cm 4 ) w: Weight per unit length ( Kg/cm) In addition, the load P is applied to the center of the support tension at both ends, which has no own weight.
The amount of deflection δ P when adding is expressed as δ P = P/48EIl 2 3 .
またδPは前記実測したδ１，δ３を用いて、 δP＝δ３−δ１ …… と表わされる。 Further , δ P is expressed as δ P = δ 3 - δ 1 . . . using the actually measured δ 1 and δ 3 .
上記、、式から、
δcp＝（δ３−δ１）ｗ／８Ｐｌ２（5l2 2−24l1 2）
……
が求まる。 From the above formula, δ cp = (δ 3 − δ 1 )w/8Pl 2 (5l 2 2 −24l 1 2 )
... is found.
また前記したようにδ１＝δ＋δcpの関係があ
るから、曲り量δは、
δ＝δ１−δcp＝δ１−（δ３−δ１）／８Ｐｌ２・
Ｗ／ｌ・（5l2 2
−24l1 2） ……
（但しｗ＝Ｗ／ｌ）
となる。 Also, as mentioned above, since there is a relationship of δ 1 = δ + δ cp , the amount of bending δ is δ = δ 1 - δ cp = δ 1 - (δ 3 - δ 1 )/8Pl 2・
W/l・(5l 2 2 −24l 1 2 ) ... (however, w=W/l).
したがつて曲り量δは、前記実測したたわみ量
δ１、荷重のある場合のたわみ量δ３、及びオー
バーハング長さl1、支点間距離l2、荷重Ｐ、更に
は予め測定しておいた形鋼重量Ｗ及び長さｌとか
ら容易に求めることが出来る。 Therefore, the amount of bending δ is based on the actually measured amount of deflection δ 1 , the amount of deflection under load δ 3 , the overhang length l 1 , the distance between fulcrums l 2 , the load P, and the previously measured amount of deflection δ 1 It can be easily determined from the weight W of the section steel and the length l.
このような本発明による測定方法によれば、形
鋼Ａを転回させる必要が全くないから、オンライ
ンでの測定が可能となる。 According to the measuring method according to the present invention, there is no need to rotate the section steel A, so online measurement is possible.
次に本発明方法を実現するための装置の具体的
一例を第２図に基づいて説明する。 Next, a specific example of an apparatus for implementing the method of the present invention will be explained based on FIG.
この装置は支点装置１とたわみ量検出器２と演
算制御装置３と荷重負荷検出装置４とから成る。 This device consists of a fulcrum device 1, a deflection amount detector 2, an arithmetic and control device 3, and a load detection device 4.
支点装置１は昇降自在でかつ被測定形鋼Ａの長
手方向移動自在な一対の支点１０，１０と、この
支点１０，１０に載置される被測定形鋼の重量を
測定する重量測定装置（図示せず）から成る。支
点１０，１０の移動及び昇降は演算制御装置３に
より制御され、支点１０，１０の距離l2は演算制
御装置３に入力される。また上記重量測定装置に
より測定された重量Ｗも演算制御装置３に入力さ
れる。 The fulcrum device 1 includes a pair of fulcrums 10, 10 that can be raised and lowered and freely movable in the longitudinal direction of the shaped steel A to be measured, and a weight measuring device ( (not shown). The movement and elevation of the fulcrums 10, 10 are controlled by the arithmetic and control device 3, and the distance l 2 between the fulcrums 10, 10 is input to the arithmetic and control device 3. Further, the weight W measured by the weight measuring device is also input to the arithmetic and control device 3.
たわみ量検出器２もまた昇降可能となつてお
り、形鋼Ａの下面に接した検出器２の頂点が支点
１０，１０の位置に対してどれだけ変位している
かを検知することにより、たわみ量δ１，δ３を
検出する。この検出値はまた演算制御装置３に入
力される。 The deflection amount detector 2 is also movable up and down, and by detecting how far the apex of the detector 2 in contact with the lower surface of the section steel A is displaced with respect to the position of the supporting points 10, 10, the deflection amount detector 2 can be moved up and down. The quantities δ 1 and δ 3 are detected. This detected value is also input to the arithmetic and control unit 3.
荷重負荷及び検出装置４は、たわみ量検出器２
のほぼ上方に位置し、形鋼Ａに所定の負荷をかけ
る押し付棒４０と荷重を検出するロードセル４１
から成る。押し付棒４０は適宜な駆動装置により
形鋼Ａに荷重を負荷する。この負荷すべき荷重は
演算制御装置３より目標荷重として出力される。
また実際に負荷された荷重はロードセル４１によ
り検出され演算制御装置３に入力される。 The load application and detection device 4 includes a deflection amount detector 2
A pressing rod 40 that applies a predetermined load to the section steel A, and a load cell 41 that detects the load.
Consists of. The pressing rod 40 applies a load to the section steel A by a suitable drive device. This load to be applied is outputted from the arithmetic and control device 3 as a target load.
Further, the load actually applied is detected by the load cell 41 and inputted to the arithmetic and control device 3.
以上のような構成の装置は被測定形鋼の測長機
能を有する装置の下流側であれば、製造フロー内
のどの位置に設置することも可能である。以下そ
の一例として形鋼製品をその長手方向に移送する
搬送テーブル上に設置した場合の動作について第
３図の流れ図を参照して説明する。 The device configured as described above can be installed at any position in the manufacturing flow as long as it is downstream of the device having the function of measuring the length of the shaped steel to be measured. As an example, the operation when a shaped steel product is placed on a conveyance table for longitudinally conveying the product will be described below with reference to the flowchart of FIG. 3.
まず、その長さｌを上流側に位置する測長器５
により測長された被測定形鋼は、本曲り測定装置
の位置で停止する。この停止はストツパ等により
行えば良い。 First, the length l is measured by the length measuring device 5 located on the upstream side.
The shape steel to be measured whose length has been measured by this method is stopped at the position of this bending measuring device. This stop may be performed using a stopper or the like.
前記測長器５からの長さｌ信号は演算制御装置
３に送信され、ここで予め決められたオーバーハ
ング長さl1から支点間隔l2が演算される。演算制
御装置３はこの演算された支点間隔l2となるよう
に支点１０，１０を移動させ、次いで支点１０，
１０を上昇させて形鋼を支持した後、検出器２及
び押し付棒４０が形鋼Ａのほぼ中央部に来るよう
に移動させる。なおオーバーハング長さl1は測定
作業に支障をきたさない範囲で小さくする方が測
定誤差が小さくなるので好ましい。 The length l signal from the length measuring device 5 is transmitted to the arithmetic and control unit 3, where the fulcrum spacing l2 is calculated from the predetermined overhang length l1 . The arithmetic and control device 3 moves the fulcrums 10, 10 so that the calculated fulcrum spacing l 2 is achieved, and then moves the fulcrums 10, 10,
10 is raised to support the shaped steel, and then moved so that the detector 2 and the pressing rod 40 are located approximately at the center of the shaped steel. Note that it is preferable to make the overhang length l 1 as small as possible within a range that does not interfere with the measurement work, since this reduces measurement errors.
形鋼Ａが支点１０，１０に支持されると、重量
Ｗが測定され、演算制御装置３に入力されると共
に、該装置３からたわみ量測定開始指令が出力さ
れて、たわみ量検出器２によりたわみ量δ３が検
出され、装置３に読み込まれる。 When the shaped steel A is supported by the fulcrums 10, 10, the weight W is measured and input to the arithmetic and control device 3, and the device 3 outputs a command to start measuring the amount of deflection, and the amount of deflection is measured by the amount of deflection detector 2. The deflection amount δ 3 is detected and read into the device 3 .
次に演算制御装置３から押し付棒降下指令が目
標荷重と共に出力され、押し付棒４０による形鋼
への荷重負荷が行われる。この実際に負荷された
荷重Ｐはロードセル４１により検出され、装置３
に読み込まれる。荷重が負荷された状態で再びた
わみ量δ３が検出され装置３に読み込まれる。 Next, a pressing rod lowering command is outputted from the arithmetic and control unit 3 together with the target load, and the pressing rod 40 applies a load to the shaped steel. This actually applied load P is detected by the load cell 41, and
is loaded into. The deflection amount δ 3 is detected again under a load and read into the device 3.
演算制御装置３では、上記読み込まれた信号に
より、上記式の演算を行い、曲り量δを算出す
る。この曲り量δは適宜手段により外部に表示さ
れる。 The arithmetic and control device 3 calculates the amount of bending δ by calculating the above equation based on the read signal. This amount of bending δ is displayed externally by appropriate means.
以上説明したように、本発明の測定方法および
装置によれば、形鋼を転回することなくその曲り
量を測定することが可能となるため、ライン内で
の連続測定が可能となり、すべての製品の曲り検
査を行うことが出来る等の効果がある。 As explained above, according to the measuring method and device of the present invention, it is possible to measure the amount of bending of the shaped steel without turning it, so continuous measurement within the line is possible, and all products can be It has the advantage of being able to perform bending inspections.
第１図は本発明方法の説明図、第２図は本発明
装置の一実施例を示すブロツク図、第３図は演算
制御装置の動作を示す流れ図である。
図中、１は支点装置、２はたわみ量検出器、３
は演算制御装置、４は荷重負荷及び検出装置、５
は測長器、１０は支点、４０は押し付棒、４１は
ロードセルを各示す。
FIG. 1 is an explanatory diagram of the method of the present invention, FIG. 2 is a block diagram showing an embodiment of the apparatus of the present invention, and FIG. 3 is a flowchart showing the operation of the arithmetic and control device. In the figure, 1 is a fulcrum device, 2 is a deflection amount detector, and 3
is an arithmetic control device, 4 is a load loading and detection device, 5
10 is a length measuring device, 10 is a fulcrum, 40 is a pressing rod, and 41 is a load cell.
Claims (1)
載置し、該被測定形鋼のたわみ量を測定し、更に
該被測定形鋼に所定の荷重をかけた状態でそのた
わみ量を測定し、前記夫々測定した２つのたわみ
量から被測定形鋼の真の曲り量を算出することを
特徴とする形鋼の曲り測定方法。 ２ 被測定形鋼の長手方向移動自在でかつ上下方
向昇降可能な被測定形鋼を載置する支点と、該支
点に載置された被測定形鋼のたわみ量を検出する
たわみ検出器と、被測定形鋼に所定の荷重をかけ
る荷重負荷装置とを有することを特徴とする形鋼
の曲り測定装置。[Claims] 1. A shaped steel to be measured is placed on fulcrums having a predetermined interval, the amount of deflection of the shaped steel to be measured is measured, and a predetermined load is applied to the shaped steel to be measured. 1. A method for measuring bending of a shaped steel, characterized in that the amount of deflection of the shaped steel is measured in the state, and the true amount of bending of the shaped steel to be measured is calculated from the two amounts of deflection measured respectively. 2. A fulcrum on which the shaped steel to be measured is placed, which is movable in the longitudinal direction and can be raised and lowered in the vertical direction, and a deflection detector that detects the amount of deflection of the shaped steel to be measured placed on the fulcrum; 1. An apparatus for measuring bending of a shaped steel, comprising: a load loading device that applies a predetermined load to the shaped steel to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56043986A JPS57158507A (en) | 1981-03-27 | 1981-03-27 | Curvature measuring method of shape steel and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56043986A JPS57158507A (en) | 1981-03-27 | 1981-03-27 | Curvature measuring method of shape steel and its device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57158507A JPS57158507A (en) | 1982-09-30 |
| JPS6253047B2 true JPS6253047B2 (en) | 1987-11-09 |
Family
ID=12679036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56043986A Granted JPS57158507A (en) | 1981-03-27 | 1981-03-27 | Curvature measuring method of shape steel and its device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57158507A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01207005A (en) * | 1988-02-15 | 1989-08-21 | Kobayashi Seisakusho:Kk | Sliding device and manufacture of it |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59134008U (en) * | 1983-02-24 | 1984-09-07 | 株式会社東芝 | Loop detector |
| JPH01118708A (en) * | 1987-11-02 | 1989-05-11 | Toyo Seikan Kaisha Ltd | Inspecting device for bottle type container |
| FR2693266B1 (en) * | 1992-07-03 | 1994-09-23 | Aerospatiale | Apparatus for measuring specimen dimensions such as thicknesses or deflections. |
| DE102007059185B4 (en) * | 2007-01-15 | 2011-04-07 | Sms Meer Gmbh | Method and device for measuring the straightness of long products |
| DE102022210294A1 (en) | 2022-09-28 | 2024-03-28 | Felsomat Gmbh & Co. Kg | Method and measuring station for determining the straightness of bar conductors |
-
1981
- 1981-03-27 JP JP56043986A patent/JPS57158507A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01207005A (en) * | 1988-02-15 | 1989-08-21 | Kobayashi Seisakusho:Kk | Sliding device and manufacture of it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57158507A (en) | 1982-09-30 |
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