JP5353495B2 - Method and apparatus for manufacturing welded H-section steel - Google Patents

Method and apparatus for manufacturing welded H-section steel Download PDF

Info

Publication number
JP5353495B2
JP5353495B2 JP2009159232A JP2009159232A JP5353495B2 JP 5353495 B2 JP5353495 B2 JP 5353495B2 JP 2009159232 A JP2009159232 A JP 2009159232A JP 2009159232 A JP2009159232 A JP 2009159232A JP 5353495 B2 JP5353495 B2 JP 5353495B2
Authority
JP
Japan
Prior art keywords
section steel
welded
perpendicularity
measured
steel
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 - Fee Related
Application number
JP2009159232A
Other languages
Japanese (ja)
Other versions
JP2011013160A (en
Inventor
寛之 大久保
豊 横山
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal Corp
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 Nippon Steel and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Priority to JP2009159232A priority Critical patent/JP5353495B2/en
Publication of JP2011013160A publication Critical patent/JP2011013160A/en
Application granted granted Critical
Publication of JP5353495B2 publication Critical patent/JP5353495B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Description

本発明は、溶接Ｈ形鋼の直角度を高精度に測定し、この測定値をフィードバックして直角度の良好な溶接Ｈ形鋼を製造する方法及びこの製造方法を実施する装置に関するものである。   The present invention relates to a method for measuring a perpendicularity of a welded H-section steel with high accuracy, and feeding back the measured value to produce a welded H-section steel having a good perpendicularity, and an apparatus for carrying out the production method. .

建築用、構造用等の鋼材として広く使用される溶接Ｈ形鋼は、平鋼からなる上下のフランジとウエブを高周波抵抗溶接法により溶接結合して製造される。この溶接点に至る途中で、ウエブの垂直度、フランジの水平度等により溶接Ｈ形鋼の直角度の不良が発生する。   A welded H-section steel widely used as a steel material for construction, construction, etc. is manufactured by welding upper and lower flanges and webs made of flat steel by high-frequency resistance welding. On the way to this welding point, a perpendicularity defect of the welded H-section steel occurs due to the verticality of the web, the horizontality of the flange, and the like.

近年、建築物の耐震強度が叫ばれる中、前記直角度の不良を有する溶接Ｈ形鋼では建築用、構造用の鋼材として不適合になる。   In recent years, while the seismic strength of buildings has been screamed, the welded H-section steel having the perpendicularity defect becomes incompatible as a steel material for construction and structure.

そこで、溶接装置の下流で連続的に溶接Ｈ形鋼の直角度を測定し、その測定結果に基づき、直角度測定装置の上流（溶接装置と直角度測定装置の間）にある直角度矯正装置にて製品の直角度を矯正する技術が提案されている（特許文献１）。   Therefore, the squareness of the welded H-section steel is continuously measured downstream of the welding device, and based on the measurement result, the perpendicularity correction device is located upstream of the perpendicularity measuring device (between the welding device and the perpendicularity measuring device). Has proposed a technique for correcting the perpendicularity of a product (Patent Document 1).

この特許文献１で開示された直角度測定装置は、上フランジの外面上方における同一基準位置の同一断面上の左端、中央、右端に３台のレーザ距離計を配置し、各々各部位までの距離を測定する。そして、中央のレーザ距離計で測定した距離を基準に、左右端の距離測定値との差を矯正指令として演算器より直角度矯正装置に出力し、直角度を矯正している。   In the perpendicularity measuring device disclosed in Patent Document 1, three laser distance meters are arranged at the left end, the center, and the right end on the same cross section at the same reference position above the outer surface of the upper flange, and the distances to the respective parts. Measure. Then, based on the distance measured by the laser distance meter at the center, the difference from the distance measurement values at the left and right ends is output as a correction command from the calculator to the squareness straightening device to correct the squareness.

しかしながら、前記特許文献１で開示された技術には、以下に列挙する問題があることが分かった。   However, it has been found that the technique disclosed in Patent Document 1 has the problems listed below.

第一は、溶接装置の下流で、かつ溶接Ｈ形鋼を切断するシャー装置（切断機）の上流の位置で測定した直角度は、製品長に切断した後の溶接Ｈ形鋼の直角度とは全く一致しないことである。   First, the perpendicularity measured at a position downstream of the welding apparatus and upstream of a shearing device (cutting machine) that cuts the welded H-section steel is the perpendicularity of the welded H-section steel after being cut into the product length. Does not match at all.

その理由は、前記切断前の位置では、製品が途切れることなく搬送されており、さらにウエブやフランジ面をピンチロールで拘束して切断機前まで製品を引張っているので、残留応力や弾性変形によって形状が変化した溶接Ｈ形鋼の直角度を測定するためである。   The reason is that the product is transported without interruption at the position before cutting, and the web or flange surface is restrained by a pinch roll to pull the product before the cutting machine. This is for measuring the perpendicularity of the welded H-section steel whose shape has changed.

第二は、直角度を測定するに際し、フランジ面の形状を３個のレーザ距離計を用いて測定し、中央の測定値を基準として、左右の測定値の差を求める方法では、溶接Ｈ形鋼にねじれ、振動等があった場合には正確に直角度を測定できない。なお、記載や図示はされていないが、下フランジの場合も同様の方法で直角度を測定しているものと推察される。   Second, when measuring the squareness, the method of measuring the shape of the flange surface using three laser distance meters and obtaining the difference between the measured values on the basis of the measured value at the center is the welding H type. If the steel is twisted or vibrated, the squareness cannot be measured accurately. Although not shown or illustrated, it is presumed that the perpendicularity is measured by the same method in the case of the lower flange.

第三は、前記形状が変形した状態で測定した、正確でない直角度測定値に基づいて直角度を矯正しているので、最終製品長さに切断した溶接Ｈ形鋼は直角度不良の発生頻度が増加することになる。   Third, since the perpendicularity is corrected based on an inaccurate perpendicularity measurement value measured in a state where the shape is deformed, the frequency of occurrence of the perpendicularity defect in the welded H-section steel cut to the final product length. Will increase.

特許第３２６２７１２号公報Japanese Patent No. 3262712

本発明が解決しようとする問題点は、従来の溶接Ｈ形鋼の直角度を測定する技術では、正確な直角度を測定することができず、正確でない直角度測定値に基づく矯正では直角度不良の発生頻度が増加するという点である。   The problem to be solved by the present invention is that the conventional technique for measuring the perpendicularity of a welded H-section steel cannot measure an accurate perpendicularity, and the correction based on an inaccurate perpendicularity measurement value is a perpendicularity. This is that the frequency of occurrence of defects increases.

本発明の溶接Ｈ形鋼の製造方法は、
直角度の測定を精度良く行うために、
溶接接合されたＨ形鋼の直角度を搬送中に連続して測定した結果をフィードバックするＨ形鋼の製造方法であって、
前記溶接接合されたＨ形鋼を製品長さに切断する切断機の下流側で、
拘束されずに搬送されてくる前記Ｈ形鋼の上下のフランジ外面及びウエブの一方の面のそれぞれの傾きを測定し、その傾きから前記Ｈ形鋼の直角度を算出し、
この算出した結果をフィードバックして溶接接合されたＨ形鋼を矯正することを最も主要な特徴としている。 The manufacturing method of the welded H-section steel of the present invention includes:
In order to accurately measure perpendicularity,
A method for producing an H-section steel, which feeds back a result obtained by continuously measuring a perpendicularity of a welded H-section steel during conveyance,
On the downstream side of the cutting machine for cutting the welded H-section steel into product length,
Measure the respective inclinations of the upper and lower flange outer surfaces of the H-shaped steel and the one surface of the web that are conveyed without restraint, and calculate the perpendicularity of the H-shaped steel from the inclination,
The most important feature is that this calculated result is fed back to correct the welded H-section steel.

本発明の溶接Ｈ形鋼の製造方法では、切断機の下流側で、拘束されずに搬送されてくるＨ形鋼の上下のフランジ外面及びウエブの一方の面のそれぞれの傾きからＨ形鋼の直角度を算出するので、形状が変化した状態のＨ形鋼の直角度を測定することがなくなる。   In the method for manufacturing a welded H-section steel according to the present invention, the H-section steel is formed from the respective inclinations of the upper and lower flange outer surfaces of the H-section steel and one surface of the web that are conveyed unconstrained on the downstream side of the cutting machine. Since the perpendicularity is calculated, it is not necessary to measure the perpendicularity of the H-shaped steel whose shape has changed.

本発明の溶接Ｈ形鋼の製造方法において、Ｈ形鋼の上下のフランジ外面及びウエブの一方の面の傾きの測定は、Ｈ形鋼の前記各面に少なくとも２個配置した各距離計により、Ｈ形鋼の同一断面の測定値を用いて行うようにすれば、直角度をより精度良く測定できる。   In the method for manufacturing a welded H-section steel of the present invention, the measurement of the inclination of the upper and lower flange outer surfaces of the H-section steel and the one surface of the web is performed by using at least two distance meters arranged on each surface of the H-section steel. If the measurement is performed using the measurement value of the same cross section of the H-shaped steel, the squareness can be measured with higher accuracy.

前記本発明の溶接Ｈ形鋼の製造方法は、
溶接接合されたＨ形鋼を製品長さに切断する切断機の下流側に、
搬送されてくる前記Ｈ形鋼の上下のフランジ外面及びウエブの一方の面と対向するように内壁面が配置された側面視コ字状の測定器本体と、
この測定器本体の前記内壁面に、前記各面に対向すべく少なくとも２個配置された距離計と、
これら距離計により測定したＨ形鋼の同一断面の測定値に基づき、直角度を求める演算器と、
を備えた溶接Ｈ形鋼の直角度測定装置が配置されている本発明の溶接Ｈ形鋼の製造装置を用いて実施できる。 The method for producing the welded H-shaped steel of the present invention comprises:
On the downstream side of the cutting machine that cuts the welded H-section into product length,
A U-shaped measuring instrument body having an inner wall surface facing the outer surface of the upper and lower flanges of the H-shaped steel being conveyed and one surface of the web;
On the inner wall surface of the measuring instrument main body, at least two distance meters arranged to face each of the surfaces;
Based on the measured values of the same cross section of the H-section steel measured by these distance meters,
It can implement using the manufacturing apparatus of the welded H-section steel of this invention by which the perpendicularity measuring apparatus of the welded H-section steel provided with this is arrange | positioned.

本発明の溶接Ｈ形鋼の製造装置において、前記各距離計を前記測定器本体の各内壁面に沿って移動可能に構成し、これら各面に配置された距離計間の距離をエンコーダで測定するように構成した場合は、異なるサイズのＨ形鋼にも適用できる。   In the welded H-section steel manufacturing apparatus of the present invention, each distance meter is configured to be movable along each inner wall surface of the measuring device main body, and a distance between distance meters arranged on each surface is measured by an encoder. When configured to do so, it can also be applied to H-shaped steels of different sizes.

本発明によれば、溶接Ｈ形鋼の直角度を高精度に測定することができるので、その測定結果に基づいて直角度を矯正することで、直角度が良好な製品の製造が可能になる。   According to the present invention, since the perpendicularity of the welded H-section steel can be measured with high accuracy, it is possible to manufacture a product having a good perpendicularity by correcting the perpendicularity based on the measurement result. .

Ｈ形鋼における直角度の定義について説明する図で、（ａ）は直角度が０mmの場合、（ｂ）は直角度が０mmでない場合である。It is a figure explaining the definition of perpendicularity in H section steel, (a) is a case where a squareness is 0 mm, and (b) is a case where a squareness is not 0 mm. 溶接Ｈ形鋼を静止させた状態で直角度を測定する方法を示す図である。It is a figure which shows the method of measuring a squareness in the state which made the welding H-section steel still. 本発明において、搬送されてくる溶接Ｈ形鋼の直角度を測定する方法について説明する図である。In this invention, it is a figure explaining the method to measure the squareness of the welding H-section steel conveyed. 溶接後、製品長に切断する前の搬送中において、溶接Ｈ形鋼の直角度を図３に示す方法で測定した後、製品長に切断し、同一箇所を図２に示す方法で測定した場合の測定値差を示した図である。When welding, after measuring the perpendicularity of the welded H-section steel by the method shown in FIG. 3 and then cutting to the product length and measuring the same part by the method shown in FIG. It is the figure which showed the measured value difference. 図４と同サイズの溶接Ｈ形鋼を製品長に切断した後の搬送中に直角度を測定した場合の測定値差を示した図４と同様の図である。It is the same figure as FIG. 4 which showed the measured value difference at the time of measuring a squareness during conveyance after cutting the welded H-section steel of the same size as FIG. 4 to the product length. 本発明方法を実施するための装置のレイアウトの一例を示す図である。It is a figure which shows an example of the layout of the apparatus for enforcing the method of this invention. 直角度測定装置の機構部の模式図例を示した図で、（ａ）（ｂ）はオンライン位置、（ｃ）（ｄ）はオフライン位置を示し、（ａ）（ｃ）は斜視図、（ｂ）（ｄ）は側面図である。It is the figure which showed the example of a schematic diagram of the mechanism part of a squareness measuring device, (a) (b) shows an online position, (c) (d) shows an offline position, (a) (c) is a perspective view, ( b) (d) is a side view. 直角度測定装置の装置構成の一例を示す図である。It is a figure which shows an example of an apparatus structure of a squareness measuring apparatus. 従来方法で製造したＨ形鋼の直角度を測定した結果を示した図である。It is the figure which showed the result of having measured the perpendicularity of the H-section steel manufactured with the conventional method. 本発明方法で製造したＨ形鋼の直角度を測定した結果を示した図である。It is the figure which showed the result of having measured the squareness of the H-section steel manufactured with the method of this invention.

本発明では、直角度の測定を精度良く行うという目的を、切断機の下流側で、拘束されずに搬送されてくるＨ形鋼の上下のフランジ外面及びウエブの一方の面のそれぞれの傾きからＨ形鋼の直角度を算出することによって実現した。   In the present invention, the purpose of measuring the squareness with high accuracy is based on the inclinations of the upper and lower flange outer surfaces of the H-shaped steel and the one surface of the web that are conveyed unconstrained on the downstream side of the cutting machine. This was realized by calculating the squareness of the H-section steel.

以下、本発明を実施するための最良の形態例を、添付図面を用いて詳細に説明する。
先ず、始めにＨ形鋼における直角度の定義について説明する。 The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.
First, the definition of perpendicularity in H-section steel will be described.

図１に溶接Ｈ形鋼１の断面図を示すが、（ａ）図のように、ウエブ１ｗと上フランジ１ｆu及び下フランジ１ｆdとの成す角度αが直角の時、直角度は「０」mmと定義する。   FIG. 1 shows a cross-sectional view of the welded H-section steel 1. As shown in FIG. 1A, when the angle α formed between the web 1w, the upper flange 1fu, and the lower flange 1fd is a right angle, the perpendicularity is “0” mm. It is defined as

次に、（ｂ）図のように、ウエブ１ｗと上フランジ１ｆu、下フランジ１ｆdとの成す角度αが直角でない時、（ｂ）図に示すＸ1を上直角度、Ｘ2を下直角度として数値化する。そして、この数値が大きいほど、直角度が不良と判断する。   Next, as shown in (b), when the angle α formed between the web 1w, the upper flange 1fu, and the lower flange 1fd is not a right angle, (1) X1 shown in the figure is the upper perpendicular angle and X2 is the lower perpendicular angle. Turn into. And it is judged that a perpendicularity is so bad that this figure is large.

次に、溶接Ｈ形鋼を静止させた状態で直角度を測定する方法を図２に示す。
図２のように、溶接Ｈ形鋼１のサイズ毎に作成した専用冶具２をウエブ１ｗの一方の面に当接させる。その際、溶接Ｈ形鋼１の直角度が「０」mmでない場合は、少なくとも上下どちらかのフランジ１ｆu、１ｆdと専用冶具２の間に隙間が生じる。従って、この隙間をテーパゲージ４で測定することにより、直角度を測定することができる。図２は、上フランジ１ｆuの直角度を測定している図である。 Next, FIG. 2 shows a method for measuring the squareness in a state where the welded H-section steel is stationary.
As shown in FIG. 2, a dedicated jig 2 created for each size of the welded H-section steel 1 is brought into contact with one surface of the web 1w. At that time, when the perpendicularity of the welded H-section steel 1 is not “0” mm, a gap is generated between at least one of the upper and lower flanges 1 fu and 1 fd and the dedicated jig 2. Therefore, the squareness can be measured by measuring this gap with the taper gauge 4. FIG. 2 is a diagram in which the perpendicularity of the upper flange 1fu is measured.

一方、溶接Ｈ形鋼１の搬送中に直角度を測定する本願の発明方法の一例を、図３を用いて説明する。   On the other hand, an example of the inventive method of measuring the perpendicularity during conveyance of the welded H-section steel 1 will be described with reference to FIG.

本願の発明では、上下のフランジ１ｆu、１ｆdの外面とウエブ１ｗの一方の面につき例えば各２個のレーザ距離計３ａ〜３ｆを設置し、上下のフランジ１ｆu、１ｆdの外面とウエブ１ｗの一方の面までの距離ｄa〜ｄfを測定する。そして、これら測定距離ｄa〜ｄfとレーザ距離計３ａと３ｂ、３ｃと３ｄ、３ｅと３ｆ同士の間隔Ｌa〜Ｌcから直角度を算出する。   In the present invention, for example, two laser distance meters 3a to 3f are installed on the outer surfaces of the upper and lower flanges 1fu and 1fd and one surface of the web 1w, and one of the outer surfaces of the upper and lower flanges 1fu and 1fd and one of the webs 1w. The distances da to df to the surface are measured. The squareness is calculated from the measurement distances da to df and the distances La to Lc between the laser distance meters 3a and 3b, 3c and 3d, 3e and 3f.

以下、具体的に説明する。
上フランジ１ｆuの外面までの距離を測定するレーザ距離計３ａ、３ｂの間隔をＬa、レーザ距離計３ａによる測定距離をｄa、レーザ距離計３ｂによる測定距離をｄbとする。同様に、ウエブ１ｗの一方の面までの距離を測定するレーザ距離計３ｃ、３ｄの間隔をＬb、レーザ距離計３ｃ、３ｄによる測定距離をｄc、ｄdとする。また、下フランジ１ｆdの外面までの距離を測定するレーザ距離計３ｅ、３ｆの間隔をＬc、レーザ距離計３ｅ、３ｆによる測定距離をｄe、ｄfとする。 This will be specifically described below.
The distance between the laser distance meters 3a and 3b for measuring the distance to the outer surface of the upper flange 1fu is La, the measurement distance with the laser distance meter 3a is da, and the measurement distance with the laser distance meter 3b is db. Similarly, the distance between the laser distance meters 3c and 3d for measuring the distance to one surface of the web 1w is Lb, and the distance measured by the laser distance meters 3c and 3d is dc and dd. The distance between the laser distance meters 3e and 3f for measuring the distance to the outer surface of the lower flange 1fd is Lc, and the distance measured by the laser distance meters 3e and 3f is de and df.

上フランジ１ｆaの外面、ウエブ１ｗの一方の面、下フランジ１ｆdの外面の傾きθ1〜θ3は、以下のように算出される。   The inclinations θ1 to θ3 of the outer surface of the upper flange 1fa, one surface of the web 1w, and the outer surface of the lower flange 1fd are calculated as follows.

上フランジ１ｆaの外面の傾きθ1：θ1＝tan−1（ｄa−ｄb）／Ｌa
ウエブ１ｗの一方の面の傾きθ2：θ2＝tan−1（ｄc−ｄd）／Ｌb
下フランジ１ｆdの外面の傾きθ3：θ3＝tan−1（ｄe−ｄf）／Ｌc Inclination of the outer surface of the upper flange 1fa θ1: θ1 = tan −1 (da−db) / La
Inclination θ2 of one surface of the web 1w: θ2 = tan −1 (dc−dd) / Lb
Inclination of the outer surface of the lower flange 1fd θ3: θ3 = tan −1 (de−df) / Lc

前記傾きθ1〜θ3より、上下のフランジ１ｆu、１ｆdの外面とウエブ１ｗの一方の面の成す角θu、θdは、以下のように求めることができる。   From the inclinations θ1 to θ3, angles θu and θd formed by the outer surfaces of the upper and lower flanges 1fu and 1fd and one surface of the web 1w can be obtained as follows.

上フランジ１ｆuの外面とウエブ１ｗの一方の面の成す角θu：θu＝θ2−θ1
下フランジ１ｆdの外面とウエブ１ｗの一方の面の成す角θd：θd＝θ2−θ3 Angle θu formed by the outer surface of the upper flange 1fu and one surface of the web 1w: θu = θ2−θ1
Angle θd formed by the outer surface of the lower flange 1fd and one surface of the web 1w: θd = θ2−θ3

これらの角度θu、θdにフランジ１ｆu、１ｆdの幅ｂu、ｂdを乗算することで、以下のように直角度を算出することができる。   By multiplying these angles θu and θd by the widths Bu and bd of the flanges 1fu and 1fd, the squareness can be calculated as follows.

上直角度：上フランジ幅×tan（θu）
下直角度：下フランジ幅×tan（θd） Vertical angle: Upper flange width x tan (θu)
Bottom perpendicular angle: Bottom flange width x tan (θd)

次に、溶接後、製品長に切断する前の搬送中において、ウエブ高さが２５０mm、上下のフランジ幅が１００mmの溶接Ｈ形鋼の直角度を図３に示す方法で測定した後、製品長に切断し、同一箇所を図２に示す方法で測定した場合の測定値差を図４に示す。   Next, after welding, the perpendicularity of the welded H-section steel with a web height of 250 mm and upper and lower flange widths of 100 mm is measured by the method shown in FIG. FIG. 4 shows the difference in measured values when the same part is measured by the method shown in FIG.

図４より、製品長に切断する前は、溶接Ｈ形鋼の残留応力及び弾性変形により、溶接Ｈ形鋼の直角度を正確に測定できていないことが分かる。図４は、直角度のうちの上直角度の測定値差を示したものであるが、下直角度（図示省略）も同様の結果であった。   From FIG. 4, it can be seen that the perpendicularity of the welded H-section steel cannot be accurately measured due to the residual stress and elastic deformation of the welded H-section steel before cutting into the product length. FIG. 4 shows the measured value difference of the upper perpendicular angle among the perpendicular angles, but the lower perpendicular angle (not shown) has the same result.

これに対し、図５は、同サイズの溶接Ｈ形鋼を製品長に切断した後の搬送中に、図３に示す方法で直角度を測定し、同一箇所を図２に示す方法で測定した場合の測定値差を示した図である。   On the other hand, FIG. 5 measured the squareness by the method shown in FIG. 3 and measured the same part by the method shown in FIG. 2 during the conveyance after cutting the welded H-section steel of the same size into the product length. It is the figure which showed the measured value difference in the case.

その結果、製品長に切断する前に測定した図４の結果と異なり、精度良く直角度を、搬送中に連続的に測定できていることが分かる。直角度を正確に測定できているのは、搬送中の溶接Ｈ形鋼のうねり、搬送に伴う振動が懸念されるものの、上下のフランジの外面、ウエブの一方の面の傾きを同一断面上で測定しているためである。   As a result, unlike the result of FIG. 4 measured before cutting into the product length, it can be seen that the squareness can be continuously measured with high accuracy during conveyance. Although the perpendicularity can be measured accurately, the undulation of the welded H-section steel during conveyance and the vibration associated with the conveyance are concerned, but the inclination of the outer surface of the upper and lower flanges and one surface of the web are on the same section. It is because it is measuring.

本発明の溶接Ｈ形鋼の製造方法は、上記の知見及び実験結果に基づいてなされたものであり、
溶接接合されたＨ形鋼の直角度を搬送中に連続して測定した結果をフィードバックするＨ形鋼の製造方法であって、
前記溶接接合されたＨ形鋼を製品長さに切断する切断機の下流側で、
拘束されずに搬送されてくる前記Ｈ形鋼の上下のフランジ外面及びウエブの一方の面のそれぞれの傾きを測定し、その傾きから前記Ｈ形鋼の直角度を算出し、
この算出した結果をフィードバックして溶接接合されたＨ形鋼を矯正するものである。 The manufacturing method of the welded H-section steel of the present invention has been made based on the above knowledge and experimental results,
A method for producing an H-section steel, which feeds back a result obtained by continuously measuring a perpendicularity of a welded H-section steel during conveyance,
On the downstream side of the cutting machine for cutting the welded H-section steel into product length,
Measure the respective inclinations of the upper and lower flange outer surfaces of the H-shaped steel and the one surface of the web that are conveyed without restraint, and calculate the perpendicularity of the H-shaped steel from the inclination,
This calculated result is fed back to correct the welded H-section steel.

前記本発明方法では、Ｈ形鋼の上下のフランジ外面及びウエブの一方の面の傾きの測定を、Ｈ形鋼の前記各面に少なくとも２個配置した各距離計により、Ｈ形鋼の同一断面の測定値を用いて行うようにすれば、直角度をより精度良く測定することができる。   In the method of the present invention, the same cross section of the H-section steel is measured by each distance meter arranged at least two on each surface of the H-section steel to measure the inclination of the upper and lower flange outer surfaces of the H-section steel and one surface of the web. If the measurement value is used, the squareness can be measured with higher accuracy.

前記の本発明方法を実施するための本発明の製造装置のレイアウトの一例を図６に示す。
直角度測定装置１１は、切断機１２の下流側で最大製品長さ以上離れた位置に設置する。図６の例では、製品である溶接Ｈ形鋼の直角度を矯正する装置１３は、直角度測定装置１１の上流側で切断機１２の下流側に配置しているが、切断機１２の上流側や、直角度測定装置１１の下流側に配置しても良い。なお、図６中の１４は溶接装置である。 An example of the layout of the manufacturing apparatus of the present invention for carrying out the above-described method of the present invention is shown in FIG.
The perpendicularity measuring device 11 is installed on the downstream side of the cutting machine 12 at a position separated by more than the maximum product length. In the example of FIG. 6, the device 13 for correcting the perpendicularity of the welded H-shaped steel as a product is arranged on the upstream side of the perpendicularity measuring device 11 and on the downstream side of the cutting machine 12. You may arrange | position to the downstream or the downstream of the squareness measuring apparatus 11. In addition, 14 in FIG. 6 is a welding apparatus.

次に、機構部の一例を示す図７と、装置構成の一例を示す図８に基づき、直角度測定装置１１を説明する。
図７に示すように、センサーには例えば三角法のレーザ距離計３ａ〜３ｆを使用し、溶接Ｈ形鋼１の同一断面を測定するように配置する。 Next, the perpendicularity measuring device 11 will be described with reference to FIG. 7 showing an example of the mechanism unit and FIG. 8 showing an example of the device configuration.
As shown in FIG. 7, for example, triangulation laser distance meters 3 a to 3 f are used as sensors, and are arranged so as to measure the same cross section of the welded H-section steel 1.

各レーザ距離計３ａ〜３ｆは、搬送されてくる溶接Ｈ形鋼１の上下のフランジ面１ｆu、１ｆd及びウエブ１ｗの一方の面と対向するように内壁面が配置された側面視コ字状の測定器本体１１ａの前記内壁面に、前記各面に対向すべく配置されている。   Each of the laser distance meters 3a to 3f has a U-shaped side view in which an inner wall surface is disposed so as to face one of the upper and lower flange surfaces 1fu and 1fd and the web 1w of the welded H-shaped steel 1 being conveyed. It arrange | positions so that the said each surface may be opposed to the said inner wall surface of the measuring device main body 11a.

このように測定器本体１１ａを側面視コ字状とすることで、溶接Ｈ形鋼１のサイズに応じ、上下のフランジ１ｆu、１ｆdの外面と対向するレーザ距離計３ａ、３ｂと３ｅ、３ｆとウエブ１ｗの一方の面と対向するレーザ距離計３ｃ、３ｄの測定位置を容易に変更できる。   In this way, the measuring instrument main body 11a is U-shaped in a side view, and according to the size of the welded H-section steel 1, the laser distance meters 3a, 3b and 3e, 3f facing the outer surfaces of the upper and lower flanges 1fu, 1fd The measurement positions of the laser distance meters 3c and 3d facing one surface of the web 1w can be easily changed.

さらにライン内の材料の有無に関係なく、校正等必要に応じてオフラインに容易に引き出せる構造とすることができる。図７（ｄ）に示すように、オフライン位置に引き出せば、校正用のテストピース架台２１を設置して、その上部に当該寸法の校正用のテストピース２２を設置することで、各レーザ距離計３ａ〜３ｆの校正ができる。   Furthermore, it is possible to make a structure that can be easily pulled off-line as necessary, such as calibration, regardless of the presence or absence of materials in the line. As shown in FIG. 7 (d), when the laser distance meter is pulled out to an off-line position, a calibration test piece base 21 is installed, and a calibration test piece 22 having the dimensions is installed on the upper part. Calibration of 3a to 3f can be performed.

各レーザ距離計３ａ〜３ｆからの出力ｄa〜ｄfと、エンコーダ１１ｂによって測定した各レーザ距離計３ａ〜３ｆの間隔Ｌa〜Ｌcは、図８に示すように、演算器１１ｃに出力される。演算器１１ｃには予め溶接Ｈ形鋼１のサイズ（上フランジ幅、下フランジ幅、ウエブ高さ）が入力されているので、これらの値に基づいて上下の直角度を演算する。   Outputs da to df from the laser distance meters 3a to 3f and intervals La to Lc between the laser distance meters 3a to 3f measured by the encoder 11b are output to the calculator 11c as shown in FIG. Since the size (the upper flange width, the lower flange width, and the web height) of the welded H-section steel 1 is input in advance to the calculator 11c, the vertical squareness is calculated based on these values.

この演算した上下の直角度は、例えば図８の装置構成に示すように、表示器１５ａ、１５ｂに出力し、溶接装置１４の下流側に配置した表示機１５ｂは、直角度矯正装置１３の手動調整の目安となるようにしている。   For example, as shown in the apparatus configuration of FIG. 8, the calculated vertical squareness is output to the indicators 15 a and 15 b, and the display 15 b disposed on the downstream side of the welding apparatus 14 is manually operated by the squareness correction apparatus 13. This is a guide for adjustment.

また前記演算器１１ｃには、製品毎の直角度の許容範囲を入力し、許容範囲を越えた時は、警報装置１６に出力して警報を出したり、マーキング装置１７に出力してマーキングしたりすることができる。さらには、製造ライン制御装置１８に出力してリジェクト装置１９を駆動し、オフラインへリジェクトすることもできる。   The computing unit 11c is inputted with an allowable range of squareness for each product, and when the allowable range is exceeded, it outputs to the alarm device 16 to give an alarm, or outputs to the marking device 17 for marking. can do. Furthermore, the output can be output to the production line control device 18 to drive the reject device 19 and reject it offline.

なお、直角度測定装置１１の前後には、溶接Ｈ形鋼１が左右に大きく振れて、レーザ距離計３ａ〜３ｆの測定範囲を外れないように、ガイドロール２０を設置している。   In addition, before and after the perpendicularity measuring device 11, a guide roll 20 is installed so that the welded H-section steel 1 is greatly swung left and right and does not deviate from the measurement range of the laser distance meters 3a to 3f.

このような構成の本発明装置を採用することにより、前記本発明方法を実施することができ、溶接Ｈ形鋼の直角度を高精度に測定することができる。その結果、直角度の矯正を正確に実施することができる。   By employing the apparatus of the present invention having such a configuration, the method of the present invention can be carried out, and the perpendicularity of the welded H-section steel can be measured with high accuracy. As a result, squareness correction can be performed accurately.

ちなみに、ウエブ高さ１７５mm、フランジ幅１００mmのＨ形鋼を、切断機前において拘束状態で連続的に直角度を測定し、その結果をフィードバックさせて矯正し、矯正後のＨ形鋼の端面から１００mm位置の直角度を手測した結果を図９に示す。   By the way, H-shaped steel with a web height of 175mm and flange width of 100mm is measured in a straight line in a restrained state in front of the cutting machine, and the result is fed back and corrected. From the end face of the H-shaped steel after correction The result of manually measuring the perpendicularity at the 100 mm position is shown in FIG.

一方、前記と同じ寸法のＨ形鋼を、切断機後において非拘束状態で連続的に直角度を測定し、前記と同じ方法で矯正し、矯正後のＨ形鋼の端面から１００mm位置の直角度を手測した結果を図１０に示す。   On the other hand, the H-shaped steel of the same size as above was measured in a straight angle continuously in an unconstrained state after the cutting machine, corrected by the same method as described above, and straightened 100 mm from the end face of the corrected H-shaped steel. The result of measuring the angle manually is shown in FIG.

切断機前において拘束状態で測定した結果をフィードバックする従来方法では、σ＝０．４９mm程度あった直角度のばらつきが、切断機後において非拘束状態で測定した結果をフィードバックする本発明によりσ＝０．２９mmと２倍近く直角度が向上した。   In the conventional method of feeding back the result measured in the restrained state before the cutting machine, the present invention that feeds back the result measured in the unconstrained state after the cutting machine is used to feed back the result of the squareness variation of about σ = 0.49 mm. The squareness improved nearly 0.2 times to 0.29 mm.

本発明は上記の例に限らず、各請求項に記載された技術的思想の範疇であれば、適宜実施の形態を変更しても良いことは言うまでもない。   The present invention is not limited to the above example, and it goes without saying that the embodiments may be changed as appropriate within the scope of the technical idea described in each claim.

例えば、各レーザ距離計３ａ〜３ｆの間隔を測定できるものであれば、エンコーダ１１ｂでなくても良い。また、センサーは、上下のフランジ１ｆu、１ｆdの外面及びウエブ１ｗの一方の面までの距離を測定できるものであれば、レーザ距離計３ａ〜３ｆでなくても良い。   For example, the encoder 11b may not be used as long as the distance between the laser distance meters 3a to 3f can be measured. The sensor may not be the laser distance meters 3a to 3f as long as it can measure the distance to the outer surfaces of the upper and lower flanges 1fu and 1fd and one surface of the web 1w.

１ 溶接Ｈ形鋼
１ｗ ウエブ
１ｆu 上フランジ
１ｆd 下フランジ
３ａ〜３ｆ レーザ距離計
１１ 直角度測定装置
１１ａ 測定器本体
１１ｂ エンコーダ
１１ｃ 演算器
１２ 切断機
１３ 直角度矯正装置 DESCRIPTION OF SYMBOLS 1 Welded H-section steel 1w Web 1fu Upper flange 1fd Lower flange 3a-3f Laser distance meter 11 Straightness measuring device 11a Measuring device main body 11b Encoder 11c Calculator 12 Cutting machine 13 Straightness straightening device

Claims (4)

溶接接合されたＨ形鋼の直角度を搬送中に連続して測定した結果をフィードバックするＨ形鋼の製造方法であって、
前記溶接接合されたＨ形鋼を製品長さに切断する切断機の下流側で、
拘束されずに搬送されてくる前記Ｈ形鋼の上下のフランジ外面及びウエブの一方の面のそれぞれの傾きを測定し、その傾きから前記Ｈ形鋼の直角度を算出し、
この算出した結果をフィードバックして溶接接合されたＨ形鋼を矯正することを特徴とする溶接Ｈ形鋼の製造方法。 A method for producing an H-section steel, which feeds back a result obtained by continuously measuring a perpendicularity of a welded H-section steel during conveyance,
On the downstream side of the cutting machine for cutting the welded H-section steel into product length,
Measure the respective inclinations of the upper and lower flange outer surfaces of the H-shaped steel and the one surface of the web that are conveyed without restraint, and calculate the perpendicularity of the H-shaped steel from the inclination,
A method for producing a welded H-section steel, wherein the calculated result is fed back to correct the welded H-section steel. 前記Ｈ形鋼の上下のフランジ外面及びウエブの一方の面の傾きの測定は、Ｈ形鋼の前記各面に少なくとも２個配置した各距離計により、Ｈ形鋼の同一断面の測定値を用いて行うことを特徴とする請求項１に記載の溶接Ｈ形鋼の製造方法。   The measurement of the inclination of the outer surface of the upper and lower flanges of the H-section steel and one surface of the web uses the measured values of the same cross-section of the H-section steel by each distance meter arranged at least two on each face of the H-section steel. The method for producing a welded H-section steel according to claim 1, wherein: 請求項２に記載の方法を実施する装置であって、
溶接接合されたＨ形鋼を製品長さに切断する切断機の下流側に、
搬送されてくる前記Ｈ形鋼の上下のフランジ外面及びウエブの一方の面と対向するように内壁面が配置された側面視コ字状の測定器本体と、
この測定器本体の前記内壁面に、前記各面に対向すべく少なくとも２個配置された距離計と、
これら距離計により測定したＨ形鋼の同一断面の測定値に基づき、直角度を求める演算器と、
を備えた溶接Ｈ形鋼の直角度測定装置が配置されていることを特徴とする溶接Ｈ形鋼の製造装置。 An apparatus for performing the method of claim 2, comprising:
On the downstream side of the cutting machine that cuts the welded H-section into product length,
A U-shaped measuring instrument body having an inner wall surface facing the outer surface of the upper and lower flanges of the H-shaped steel being conveyed and one surface of the web;
On the inner wall surface of the measuring instrument main body, at least two distance meters arranged to face each of the surfaces;
Based on the measured values of the same cross section of the H-section steel measured by these distance meters,
An apparatus for measuring the perpendicularity of a welded H-section steel provided with a welding H-section steel is provided. 前記各距離計を前記測定器本体の各内壁面に沿って移動可能に構成し、これら各面に配置された距離計間の距離をエンコーダで測定するように構成したことを特徴とする請求項３に記載の溶接Ｈ形鋼の製造装置。   The distance meter is configured to be movable along each inner wall surface of the measuring device main body, and a distance between distance meters arranged on each surface is measured by an encoder. The manufacturing apparatus of the welded H-section steel of 3.
JP2009159232A 2009-07-03 2009-07-03 Method and apparatus for manufacturing welded H-section steel Expired - Fee Related JP5353495B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009159232A JP5353495B2 (en) 2009-07-03 2009-07-03 Method and apparatus for manufacturing welded H-section steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009159232A JP5353495B2 (en) 2009-07-03 2009-07-03 Method and apparatus for manufacturing welded H-section steel

Publications (2)

Publication Number Publication Date
JP2011013160A JP2011013160A (en) 2011-01-20
JP5353495B2 true JP5353495B2 (en) 2013-11-27

Family

ID=43592206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009159232A Expired - Fee Related JP5353495B2 (en) 2009-07-03 2009-07-03 Method and apparatus for manufacturing welded H-section steel

Country Status (1)

Country Link
JP (1) JP5353495B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5548161B2 (en) * 2011-05-31 2014-07-16 本田技研工業株式会社 Sensor angle measurement method
JP6256161B2 (en) * 2014-04-03 2018-01-10 Ｊｆｅスチール株式会社 Shaped steel squareness measuring device
CN111272091B (en) * 2020-03-09 2021-03-23 东南大学 Automatic identification method for large deformation of welded I-steel based on three-dimensional laser scanning
DE102023106655B3 (en) 2023-03-16 2024-06-06 Fachhochschule Erfurt, Körperschaft des öffentlichen Rechts Process for the automated production of rolled profiles to be structurally provided with stiffeners, in particular solid stiffeners

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0763765B2 (en) * 1986-09-16 1995-07-12 川崎製鉄株式会社 Straightening method for H-section steel
JPS63177011A (en) * 1987-01-19 1988-07-21 Kawasaki Steel Corp Method for measuring squareness of flange of h-shaped material
JPH04148816A (en) * 1990-10-12 1992-05-21 Sumitomo Metal Ind Ltd Method for measuring shape and size of shape steel material
JP2637675B2 (en) * 1992-12-01 1997-08-06 川崎製鉄株式会社 How to measure dimensions of section steel
JP3073374B2 (en) * 1993-01-27 2000-08-07 日立造船株式会社 Dimension measuring device for shaped steel
JPH0727518A (en) * 1993-07-09 1995-01-27 Kawasaki Steel Corp On-line shape measuring device for shape steel
JP3876758B2 (en) * 2002-04-25 2007-02-07 住友金属工業株式会社 Equipment for measuring hot dimensions and shapes of H-section steel

Also Published As

Publication number Publication date
JP2011013160A (en) 2011-01-20

Similar Documents

Publication Publication Date Title
JP5353495B2 (en) Method and apparatus for manufacturing welded H-section steel
JP5967031B2 (en) Method and apparatus for correcting the perpendicularity of H-shaped steel flange
JP2013104719A (en) External surface bend measuring-method for steel pipe
JP5146673B2 (en) ALC panel main bar cover thickness inspection method
US7310148B2 (en) Automatic material measurement system
JP4768055B2 (en) Hot scarf cutting amount measuring method and measuring device
JP4362829B2 (en) Method and apparatus for detecting bending of pipe material
JP2002346609A (en) Production method for deformed steel plate
JP2021146351A (en) Laser welding device and laser beam position deviation detection method in laser welding device
JP6022160B2 (en) Continuous plate thickness measuring device, crown inspection device and inspection method thereof, ripple inspection device and inspection method thereof, and crown control device and control method thereof
JP2013092439A (en) Inner-surface curvature measurement device for pipe, and measurement method using the same
JP5125529B2 (en) Bag making machine and position adjustment method of seal unit of bag making machine
JP4506892B1 (en) Gap inspection method and jig
JP3419293B2 (en) Continuous straightening device and continuous straightening method for section steel
JP4410742B2 (en) Hot scarf cutting amount measuring method and measuring device
KR101530489B1 (en) Welded pipe with reinforce supporter, pipe forming apparatus of roll bending type and method of manufacturing welded pipe using the same
JP5613984B2 (en) Slit inspection method and jig
JP5794166B2 (en) UOE steel pipe manufacturing method
JP2013003117A (en) Thickness measuring method of sheet-like material, and conveyance device of sheet-like material
KR20140010625A (en) Leg lengh gauge
JPS6328689B2 (en)
JP2024080834A (en) Beam Manufacturing Equipment
JP6245144B2 (en) Shape detection device
JP2013136064A (en) Method for measuring misalignment of pass line on piercer delivery side and bending of bar
JP6557293B2 (en) ERW steel pipe length measuring device in ERW steel pipe production line

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110825

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120912

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120918

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20121011

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20121011

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130730

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130812

R151 Written notification of patent or utility model registration

Ref document number: 5353495

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees