JP2014012293A - Torsion correction method - Google Patents

Torsion correction method Download PDF

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JP2014012293A
JP2014012293A JP2012162051A JP2012162051A JP2014012293A JP 2014012293 A JP2014012293 A JP 2014012293A JP 2012162051 A JP2012162051 A JP 2012162051A JP 2012162051 A JP2012162051 A JP 2012162051A JP 2014012293 A JP2014012293 A JP 2014012293A
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flat steel
twist
corrected
correction
applying
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Shinichi Shimomura
慎一 下村
Fumio Kaneko
文夫 金子
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DAISAN SEIKO KK
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Abstract

PROBLEM TO BE SOLVED: To correct a flat steel with torsion generated, which is conventionally impossible.SOLUTION: An attachable and detachable arresting gear, for horizontally holding a flat steel from above and fixing the flat steel, is provided to fix one end of the flat steel to be corrected. In this state, a turning force using a bending moment generated when pressing a correcting portion from top and bottom by a hydraulic device is applied to correct the flat steel. The arresting gear includes an attachable and detachable fixing device for generating a corrective force by a hydraulic press, and obtains the corrective force in such a manner that the flat steel to be corrected is horizontally pressed from above and fixed by the arresting gear and a reverse turning force is applied by using the hydraulic press from the up-and-down direction. In addition, the torsion can be corrected by using a correcting jig that has an opening and has a lever portion with an angle from the horizontal direction to one side or both sides of outside.

Description

本発明は、平鋼のネジレ矯正方法に関するものである。  The present invention relates to a method for correcting twisting of flat steel.

従来より、熱間圧延により製造する平鋼に生じた反り、横曲りに対して、平坦度矯正機及び横曲がり矯正機による平坦度矯正、横曲がり矯正を行ってきた。  Conventionally, flatness correction and horizontal bending correction by a flatness correction machine and a horizontal bending correction machine have been performed for warpage and horizontal bending generated in a flat steel produced by hot rolling.

発明が解決しようとする課題Problems to be solved by the invention

ところが、前記の矯正方法では、一般的な平坦度不良及び横曲がりについては矯正可能であるが、ネジレの生じた平鋼を矯正することが出来ない。そのため形状測定の結果ネジレにより製品の規格値を外れた平鋼は矯正することができず、今まで製品の規格外となりスクラップとして処理するしかなかった。  However, in the above correction method, it is possible to correct general flatness defects and lateral bending, but it is not possible to correct twisted flat steel. For this reason, flat steels that deviate from product specifications due to twisting as a result of shape measurement could not be corrected, and until now they were out of product specifications and had to be treated as scrap.

平鋼は熱間圧延工程により製造するが、特に断面形状が非対称である平鋼は製造が非常に難しくネジレを伴う形状不良を生じやすい。一般的に圧延により発生するものは曲がりや反りであるのに対し、ネジレとは平鋼の厚部、薄部またはその両側に発生し、より複雑な三次元の曲がりを生じたものである。Flat steel is manufactured by a hot rolling process. In particular, flat steel having an asymmetric cross-sectional shape is very difficult to manufacture and is liable to cause shape defects with twisting. In general, what is generated by rolling is bending or warping, whereas twisting occurs in the thick part, thin part, or both sides of a flat steel, resulting in more complicated three-dimensional bending.

そこで、矯正しようとする平鋼の一端を拘束しながら、ネジレの生じた部分にプレスをかけることで発生する曲げモーメントによる回転力を加え、ネジレの発生した方向と逆方向に曲げることによってネジレを解消し矯正することを目的としたネジレ矯正方法である。  Therefore, while constraining one end of the flat steel to be straightened, a twisting force generated by pressing the twisted portion is applied, and a twisting force is generated by bending in a direction opposite to the direction of twisting. It is a twist correction method aimed at eliminating and correcting.

課題を解決するための手段Means for solving the problem

請求項Ｉに記載の発明は、［図２］［図３］に示すように、矯正しようとする平鋼の一端を押えて拘束しながら、反対側の端部に油圧プレスで圧力をかけることにより発生する曲げモーメントの回転力を利用してネジレを解消し、矯正することを要旨とする。  As shown in [FIG. 2] and [FIG. 3], the invention according to claim I applies pressure to the opposite end portion with a hydraulic press while pressing and restraining one end of the flat steel to be corrected. The gist is to eliminate and correct the twist by using the rotational force of the bending moment generated by.

従って、請求項ＩＩに記載の発明にもあるとおり、拘束装置で矯正しようとする平鋼の一端を着脱可能な拘束装置［図２］［図３］で上方より水平に押さえつけて固定させる。この状態で、矯正する部分に対し油圧装置による上下方向からのプレスによってネジレの生じた方向とは逆向きに回転力を加えてネジレを矯正する方法である。［図２］［図４］Therefore, as in the invention described in claim II, one end of the flat steel to be corrected by the restraining device is pressed and fixed horizontally from above with a detachable restraining device [FIG. 2] and [FIG. 3]. In this state, the torsion is corrected by applying a rotational force in the direction opposite to the direction in which the twist occurred by pressing the portion to be corrected from above and below by the hydraulic device. [FIG. 2] [FIG. 4]

請求項ＩＩに記載の発明は、着脱可能な拘束装置を設置し、矯正しようとする平鋼を上下より水平に押さえつけて拘束し、固定することを要旨とする。固定する方法にはスクリューによる又は油圧による方法がある。  The gist of the invention described in claim II is to install a detachable restraint device and restrain and fix the flat steel to be corrected by pressing it horizontally from above and below. The fixing method includes a screw method or a hydraulic method.

従って、［図３］に示すように、油圧装置による上下方向からのプレスにより回転力を発生させる曲げモーメントを得るために、平鋼の一端を固定させる装置である。Therefore, as shown in FIG. 3, in order to obtain a bending moment that generates a rotational force by pressing from above and below by a hydraulic device, this is a device that fixes one end of a flat bar.

請求項ＩＩＩに記載の発明は、上下方向からの油圧プレスで矯正する際に矯正治具を使用することを要旨とする。  The gist of the invention described in claim III is to use a correction jig when correcting with a hydraulic press from above and below.

従ってネジレの矯正において、油圧装置の上下方向からの油圧プレスを利用可能であり、油圧プレスと治具による回転力を加えてネジレを効果的に解消することが可能な形状の矯正治具を使用しながら矯正する。Therefore, it is possible to use a hydraulic press from the top and bottom of the hydraulic device for straightening the twist, and use a straightening jig that can effectively eliminate twist by applying the rotational force of the hydraulic press and jig. While correcting.

この治具は［図４］［図５］に示すように、平鋼の端部に着脱、スライドが可能なように開口部を有し、矯正治具の外側の片方又は両方に水平方向から角度を持ったレバー部分に上下方向からの油圧プレスによりネジレの発生した方向とは逆方向に曲げることでネジレを解消し、矯正する方法である。As shown in [FIG. 4] and [FIG. 5], this jig has an opening so that it can be attached to, detached from, and slid on the end of the flat steel. This is a method of eliminating and correcting the twist by bending the lever portion having an angle by a hydraulic press from above and below in a direction opposite to the direction in which the twist occurred.

発明の効果Effect of the invention

請求項Ｉの発明によれば、［図２］［図３］［図４］に示すように、平鋼の一端を着脱可能な拘束装置で上方から水平に押さえつけて固定しながら、油圧装置による上下方向からのプレスをかけることで発生する回転力を加えてネジレを解消することができるため、従来の矯正方法だけでは矯正することができなかった平鋼のネジレ矯正が可能となった。  According to the invention of claim I, as shown in [FIG. 2], [FIG. 3] and [FIG. 4], the one end of the flat steel is pressed and fixed horizontally from above with a detachable restraining device, Since twisting can be eliminated by applying a rotational force generated by pressing from above and below, flattening of flat steel that could not be corrected only by the conventional correction method became possible.

さらに、従来までのネジレによるスクラップ化を防止することで大幅な歩留りの改善が可能となり、スクラップ化を大幅に減らすことで地球環境負荷の低減に大きく貢献できるものである。Furthermore, the yield can be significantly improved by preventing scrapping due to conventional twisting, and by greatly reducing the scrapping, it can greatly contribute to the reduction of the global environmental load.

請求項ＩＩの発明によれば、請求項Ｉの効果に加え、［図３］に示すように矯正しようとする平鋼の一端を着脱可能な拘束装置を設け上方より水平に押さえつけて固定する。この拘束装置はネジレ矯正時のみ使用可能である。  According to the invention of Claim II, in addition to the effect of Claim I, as shown in FIG. 3, one end of the flat steel to be corrected is provided with a detachable restraining device, and is pressed and fixed horizontally from above. This restraint device can be used only during twist correction.

これにより油圧装置のプレスによりネジレの生じた方向とは逆向き方向に回転力を加えネジレを解消し、矯正させることができる。As a result, it is possible to eliminate and correct the twist by applying a rotational force in a direction opposite to the direction in which the twist occurs due to the press of the hydraulic device.

請求項ＩＩＩの発明によれば、請求項Ｉ〜ＩＩの方法に加え、着脱可能な拘束装置を設け平鋼を上方より水平に押さえつけて固定すること及び油圧装置の上下からのプレスを使用してネジレの矯正を行うことが可能な形状をした［図４］［図５］に示すような矯正治具を使用する。  According to the invention of Claim III, in addition to the methods of Claims I to II, a detachable restraining device is provided and the flat steel is pressed and fixed horizontally from above, and presses from above and below the hydraulic device are used. A straightening jig as shown in FIG. 4 and FIG. 5 having a shape capable of correcting twisting is used.

この矯正治具は外側の片方又は両方に水平方向から角度を持ったレバー部分を有しており、油圧装置による上下方向からのプレスにより曲げモーメントによる回転力を効果的に得るものである。This straightening jig has a lever portion having an angle from the horizontal direction on one or both of the outer sides, and effectively obtains a rotational force due to a bending moment by pressing from above and below by a hydraulic device.

また、平鋼の端部に着脱、スライドが可能なように開口部を有しておりネジレ発生箇所に対して簡単に位置を調整しながら矯正することができる。その結果、矯正能力の向上と作業効率アップを図ることができるものである。Moreover, it has an opening part so that attachment and detachment and a slide are possible at the edge part of a flat steel, and it can correct | amend, adjusting a position easily with respect to a twist generation | occurrence | production location. As a result, it is possible to improve the correction ability and increase the work efficiency.

〈試験例〉［表１］は本発明による試験例結果を示すものである。平鋼をテーブル上に置き、ネジレの発生しやすい端部からの位置において測定器を使用して平鋼の厚部及び薄部のネジレをテーブルから平鋼の下面部の浮き上り量を測定する。製品規格値を外れた平鋼を本発明の方法で矯正する。その結果、本発明のネジレ矯正方法で平鋼の矯正を行うことでネジレが大幅に改善できること、矯正することによりスクラップ処理が減少するため歩留が向上することが実証された。<Test Examples> [Table 1] shows the results of test examples according to the present invention. Place flat steel on the table, and measure the amount of float on the bottom of the flat steel from the table using the measuring device at the position from the edge where twisting is likely to occur. . Flat steel that deviates from the product specification value is corrected by the method of the present invention. As a result, it was proved that twisting can be significantly improved by correcting the flat bar by the twist correcting method of the present invention, and the yield is improved because scrap processing is reduced by correcting.

本発明によるネジレ矯正の概要を示すフローチャートである。It is a flowchart which shows the outline | summary of the twist correction by this invention. 本発明によるネジレ矯正の設備構成図である。It is an equipment block diagram of twist correction by the present invention. 本発明における拘束装置部の設備構成図である。It is an equipment block diagram of a restraint device part in the present invention. 本発明におけるプレス矯正部の設備構成図である。It is an equipment block diagram of a press correction part in the present invention. 本発明における矯正冶具を示す構成図である。It is a block diagram which shows the correction jig in this invention.

表１Table 1

本発明における矯正試験例の結果を示す表である。It is a table | surface which shows the result of the correction test example in this invention.

１．．．矯正対象材
２．．．支い物
３．．．拘束装置
４．．．矯正治具
５．．．油圧装置によるプレス
６．．．矯正台1. . . 1. Material to be corrected . . 2. Support . . Restraint device4. . . 4. Correction jig . . 5. Press by hydraulic device . . Straightening table

本発明は、平鋼のネジレ矯正方法に関するものである。  The present invention relates to a method for correcting twisting of flat steel.

従来より、熱間圧延により製造する平鋼に生じた反り、横曲りに対して、平坦度矯正機及び横曲がり矯正機による平坦度矯正、横曲がり矯正を行ってきた。  Conventionally, flatness correction and horizontal bending correction by a flatness correction machine and a horizontal bending correction machine have been performed for warpage and horizontal bending generated in a flat steel produced by hot rolling.

発明が解決しようとする課題Problems to be solved by the invention

ところが、前記の矯正方法では、一般的な平坦度不良及び横曲がりについては矯正可能であるが、ネジレの生じた平鋼を矯正することが出来ない。そのため形状測定の結果ネジレにより製品の規格値を外れた平鋼は矯正することができず、今まで製品の規格外となりスクラップとして処理するしかなかった。  However, in the above correction method, it is possible to correct general flatness defects and lateral bending, but it is not possible to correct twisted flat steel. For this reason, flat steels that deviate from product specifications due to twisting as a result of shape measurement could not be corrected, and until now they were out of product specifications and had to be treated as scrap.

平鋼は熱間圧延工程により製造するが、特に断面形状が非対称である平鋼は製造が非常に難しくネジレを伴う形状不良を生じやすい。一般的に圧延により発生するものは曲がりや反りであるのに対し、ネジレとは平鋼の厚部、薄部またはその両側に発生し、より複雑な三次元の曲がりを生じたものである。Flat steel is manufactured by a hot rolling process. In particular, flat steel having an asymmetric cross-sectional shape is very difficult to manufacture and is liable to cause shape defects with twisting. In general, what is generated by rolling is bending or warping, whereas twisting occurs in the thick part, thin part, or both sides of a flat steel, resulting in more complicated three-dimensional bending.

そこで、矯正しようとする平鋼の一端を拘束しながら、ネジレの生じた部分にプレスをかけることで発生する曲げモーメントによる回転力を加え、ネジレの発生した方向と逆方向に曲げることによってネジレを解消し矯正することを目的としたネジレ矯正方法である。  Therefore, while constraining one end of the flat steel to be straightened, a twisting force generated by pressing the twisted portion is applied, and a twisting force is generated by bending in a direction opposite to the direction of twisting. It is a twist correction method aimed at eliminating and correcting.

課題を解決するための手段Means for solving the problem

請求項Ｉに記載の発明は、［図２］［図３］に示すように、矯正しようとする平鋼の一端を押えて拘束しながら、反対側の端部に油圧プレスで圧力をかけることにより発生する曲げモーメントの回転力を利用してネジレを解消し、矯正することを要旨とする。  As shown in [FIG. 2] and [FIG. 3], the invention according to claim I applies pressure to the opposite end portion with a hydraulic press while pressing and restraining one end of the flat steel to be corrected. The gist is to eliminate and correct the twist by using the rotational force of the bending moment generated by.

従って、請求項ＩＩに記載の発明にもあるとおり、拘束装置で矯正しようとする平鋼の一端を着脱可能な拘束装置［図２］［図３］で上方より水平に押さえつけて固定させる。この状態で、矯正する部分に対し油圧装置による上下方向からのプレスによってネジレの生じた方向とは逆向きに回転力を加えてネジレを矯正する方法である。［図２］［図４］Therefore, as in the invention described in claim II, one end of the flat steel to be corrected by the restraining device is pressed and fixed horizontally from above with a detachable restraining device [FIG. 2] and [FIG. 3]. In this state, the torsion is corrected by applying a rotational force in the direction opposite to the direction in which the twist occurred by pressing the portion to be corrected from above and below by the hydraulic device. [FIG. 2] [FIG. 4]

請求項ＩＩに記載の発明は、着脱可能な拘束装置を設置し、矯正しようとする平鋼を上下より水平に押さえつけて拘束し、固定することを要旨とする。固定する方法にはスクリューによる又は油圧による方法がある。  The gist of the invention described in claim II is to install a detachable restraint device and restrain and fix the flat steel to be corrected by pressing it horizontally from above and below. The fixing method includes a screw method or a hydraulic method.

従って、［図３］に示すように、油圧装置による上下方向からのプレスにより回転力を発生させる曲げモーメントを得るために、平鋼の一端を固定させる装置である。Therefore, as shown in FIG. 3, in order to obtain a bending moment that generates a rotational force by pressing from above and below by a hydraulic device, this is a device that fixes one end of a flat bar.

請求項ＩＩＩに記載の発明は、上下方向からの油圧プレスで矯正する際に矯正治具を使用することを要旨とする。  The gist of the invention described in claim III is to use a correction jig when correcting with a hydraulic press from above and below.

従ってネジレの矯正において、油圧装置の上下方向からの油圧プレスを利用可能であり、油圧プレスと治具による回転力を加えてネジレを効果的に解消することが可能な形状の矯正治具を使用しながら矯正する。Therefore, it is possible to use a hydraulic press from the top and bottom of the hydraulic device for straightening the twist, and use a straightening jig that can effectively eliminate twist by applying the rotational force of the hydraulic press and jig. While correcting.

この治具は［図４］［図５］に示すように、平鋼の端部に着脱、スライドが可能なように開口部を有し、矯正治具の外側の片方又は両方に水平方向から角度を持ったレバー部分に上下方向からの油圧プレスによりネジレの発生した方向とは逆方向に曲げることでネジレを解消し、矯正する方法である。As shown in [FIG. 4] and [FIG. 5], this jig has an opening so that it can be attached to, detached from, and slid on the end of the flat steel. This is a method of eliminating and correcting the twist by bending the lever portion having an angle by a hydraulic press from above and below in a direction opposite to the direction in which the twist occurred.

発明の効果Effect of the invention

請求項Ｉの発明によれば、［図２］［図３］［図４］に示すように、平鋼の一端を着脱可能な拘束装置で上方から水平に押さえつけて固定しながら、油圧装置による上下方向からのプレスをかけることで発生する回転力を加えてネジレを解消することができるため、従来の矯正方法だけでは矯正することができなかった平鋼のネジレ矯正が可能となった。  According to the invention of claim I, as shown in [FIG. 2], [FIG. 3] and [FIG. 4], the one end of the flat steel is pressed and fixed horizontally from above with a detachable restraining device, Since twisting can be eliminated by applying a rotational force generated by pressing from above and below, flattening of flat steel that could not be corrected only by the conventional correction method became possible.

さらに、従来までのネジレによるスクラップ化を防止することで大幅な歩留りの改善が可能となり、スクラップ化を大幅に減らすことで地球環境負荷の低減に大きく貢献できるものである。Furthermore, the yield can be significantly improved by preventing scrapping due to conventional twisting, and by greatly reducing the scrapping, it can greatly contribute to the reduction of the global environmental load.

請求項ＩＩの発明によれば、請求項１の効果に加え、［図３］に示すように矯正しようとする平鋼の一端を着脱可能な拘束装置を設け上方より水平に押さえつけて固定する。この拘束装置はネジレ矯正時のみ使用可能である。  According to the invention of claim II, in addition to the effect of claim 1, as shown in [FIG. 3], one end of the flat steel to be corrected is provided with a detachable restraining device, and is pressed and fixed horizontally from above. This restraint device can be used only during twist correction.

これにより油圧装置のプレスによりネジレの生じた方向とは逆向き方向に回転力を加えネジレを解消し、矯正させることができる。As a result, it is possible to eliminate and correct the twist by applying a rotational force in a direction opposite to the direction in which the twist occurs due to the press of the hydraulic device.

請求項ＩＩＩの発明によれば、請求項Ｉ〜ＩＩの方法に加え、着脱可能な拘束装置を設け平鋼を上方より水平に押さえつけて固定すること及び油圧装置の上下からのプレスを使用してネジレの矯正を行うことが可能な形状をした［図４］［図５］に示すような矯正治具を使用する。  According to the invention of Claim III, in addition to the methods of Claims I to II, a detachable restraining device is provided and the flat steel is pressed and fixed horizontally from above, and presses from above and below the hydraulic device are used. A straightening jig as shown in FIG. 4 and FIG. 5 having a shape capable of correcting twisting is used.

この矯正治具は外側の片方又は両方に水平方向から角度を持ったレバー部分を有しており、油圧装置による上下方向からのプレスにより曲げモーメントによる回転力を効果的に得るものである。This straightening jig has a lever portion having an angle from the horizontal direction on one or both of the outer sides, and effectively obtains a rotational force due to a bending moment by pressing from above and below by a hydraulic device.

また、平鋼の端部に着脱、スライドが可能なように開口部を有しておりネジレ発生箇所に対して簡単に位置を調整しながら矯正することができる。その結果、矯正能力の向上と作業効率アップを図ることができるものである。Moreover, it has an opening part so that attachment and detachment and a slide are possible at the edge part of a flat steel, and it can correct | amend, adjusting a position easily with respect to a twist generation | occurrence | production location. As a result, it is possible to improve the correction ability and increase the work efficiency.

〈試験例〉［図６］は本発明による試験例結果を示すものである。平鋼をテーブル上に置き、ネジレの発生しやすい端部からの位置において測定器を使用して平鋼の厚部及び薄部のネジレをテーブルから平鋼の下面部の浮き上り量を測定する。製品規格値を外れた平鋼を本発明の方法で矯正する。その結果、本発明のネジレ矯正方法で平鋼の矯正を行うことでネジレが大幅に改善できること、矯正することによりスクラップ処理が減少するため歩留が向上することが実証された。<Test Example> [FIG. 6] shows the results of a test example according to the present invention. Place flat steel on the table, and measure the amount of float on the bottom of the flat steel from the table using the measuring device at the position from the edge where twisting is likely to occur. . Flat steel that deviates from the product specification value is corrected by the method of the present invention. As a result, it was proved that twisting can be significantly improved by correcting the flat bar by the twist correcting method of the present invention, and the yield is improved because scrap processing is reduced by correcting.

本発明によるネジレ矯正の概要を示すフローチャートである。It is a flowchart which shows the outline | summary of the twist correction by this invention. 本発明によるネジレ矯正の設備構成図である。It is an equipment block diagram of twist correction by the present invention. 本発明における拘束装置部の設備構成図である。It is an equipment block diagram of a restraint device part in the present invention. 本発明におけるプレス矯正部の設備構成図である。It is an equipment block diagram of a press correction part in the present invention. 本発明における矯正冶具を示す構成図である。It is a block diagram which shows the correction jig in this invention. 本発明における矯正試験例の結果を示す図である。It is a figure which shows the result of the correction test example in this invention.

１．．．矯正対象材
２．．．支い物
３．．．拘束装置
４．．．矯正治具
５．．．油圧装置によるプレス
６．．．矯正台1. . . 1. Material to be corrected . . 2. Support . . Restraint device4. . . 4. Correction jig . . 5. Press by hydraulic device . . Straightening table

Claims (3)

熱間圧延した平鋼を形状測定し製品規格を外れた平鋼に上方から水平に拘束装置により固定し、ネジレの生じた方向とは逆の方向の回転力による変形を加えることでネジレを解消させる矯正方法において、平鋼を上方より水平に押さえつける拘束装置を設置して矯正しようとする平鋼の反対側の端部を固定する。矯正しようとする平鋼の端部を上下方向からの油圧プレスをかけることでネジレの生じた方向とは逆向きに回転力を加えて矯正することを特徴とするネジレ矯正方法である。The shape of the hot-rolled flat bar is measured and fixed to the flat bar that is out of product specifications by a restraining device horizontally from above, and the twist is eliminated by applying deformation due to the rotational force in the direction opposite to the direction in which the twist occurs. In the straightening method, the restraint device that holds the flat bar horizontally from above is installed to fix the opposite end of the flat bar to be straightened. This is a twist correction method characterized in that the end of a flat steel to be corrected is corrected by applying a rotational force in a direction opposite to the direction of twist by applying a hydraulic press from above and below. 拘束装置部は、油圧プレスによる矯正力を発生させるため、着脱可能な固定装置を備えた拘束装置であり、矯正しようとする平鋼を拘束装置により上方より水平に押さえつけ固定させることと、上下方向からの油圧プレスによる逆方向の回転力を加えることで矯正力を得ることを特徴とする［請求項Ｉ］のネジレ矯正方法である。The restraining device section is a restraining device having a detachable fixing device for generating a correction force by a hydraulic press. The restraining device presses and fixes the flat steel to be corrected horizontally from above with the restraining device, and the vertical direction. The twisting correction method according to claim I, wherein a correction force is obtained by applying a reverse rotational force by a hydraulic press. 矯正治具部は、上方から水平に押さえつけて固定する着脱可能な拘束装置および油圧装置の上下方向からのプレスをかけながら矯正が可能な形状のものである。ネジレを矯正しようとする部分に矯正冶具をはめ込み、外側の片方、又は両方に水平方向から角度を持ったレバー部分に対し油圧装置により上下方向に押さえつける力を加える。これによりネジレの生じた方向とは逆向きの油圧プレスによる回転力を加えて矯正することができる。また、この治具は平鋼の端部に着脱、スライドが可能なように開口部を有する。この治具を用いた［請求項Ｉ］のネジレ矯正方法である。The straightening jig part has a shape that can be straightened while pressing from above and below a detachable restraint device and a hydraulic device that are pressed and fixed horizontally from above. A straightening jig is inserted into the portion where the twist is to be straightened, and a force is applied to the lever portion having an angle from the horizontal direction on one or both of the outer sides by a hydraulic device in the vertical direction. Thereby, it is possible to correct by applying a rotational force by a hydraulic press opposite to the direction in which the twist occurs. Moreover, this jig has an opening so that it can be attached to and detached from and slided to the end of the flat steel. The twist correction method according to [Claim I] using this jig.
JP2012162051A 2012-07-03 2012-07-03 Torsion correction method Pending JP2014012293A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110180920A (en) * 2019-05-27 2019-08-30 哈尔滨工业大学 A kind of curved detrwisting integrated apparatus in odd-shaped cross section pipe school
CN114345989A (en) * 2021-12-29 2022-04-15 中船重工中南装备有限责任公司 School type is with pressure block subassembly of taking protect function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110180920A (en) * 2019-05-27 2019-08-30 哈尔滨工业大学 A kind of curved detrwisting integrated apparatus in odd-shaped cross section pipe school
CN114345989A (en) * 2021-12-29 2022-04-15 中船重工中南装备有限责任公司 School type is with pressure block subassembly of taking protect function

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