JP2004291169A

JP2004291169A - Deburring device for square bar

Info

Publication number: JP2004291169A
Application number: JP2003088491A
Authority: JP
Inventors: Koji Yamashita; 浩二山下; Hiromasa Hayashi; 宏優林
Original assignee: JP Steel Plantech Co
Current assignee: JP Steel Plantech Co
Priority date: 2003-03-27
Filing date: 2003-03-27
Publication date: 2004-10-21

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deburring device for a square bar that minimizes cutting load and hardly generates a grinding remnant such as sag or burr. <P>SOLUTION: The deburring device for a square bar comprises: a cutting edge A for cutting burr on one side in the width direction of the square bar of burrs occurring on a first surface of the square bar; a cutting edge B for cutting burr on the other side in the width direction of the square bar of burrs occurring on a second surface opposite to the first surface of the square bar at the same position as that of the cutting edge A in the longitudinal direction of the square bar; a cutting edge C for cutting burr that is not removed by the cutting edge A among the burrs occurring on the first surface of the square bar at the downstream side of the cutting edges A and B in the longitudinal direction of the square bar; a cutting edge D for cutting burr that is not removed by the cutting edge B of the burrs occurring on the second surface of the square bar at the same position as that of the cutting edge C in the longitudinal direction of the square bar; and a transferring means for moving the square bar in the longitudinal direction relatively to the group of the cutting edges A-D. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、角材の表面に生じたバリを切削刃によって除去するバリ取り装置に関するもので、特に連続圧延設備で、溶接機で連続化されたビレットの溶接部に生じた溶接バリを除去するバリ取り装置に関する。
【０００２】
【従来の技術】
連続圧延設備用の溶接機として、フラッシュ溶接機（またはフラッシュバット溶接機）等が知られている（例えば、特許文献１、２または３参照。）。これらに示された溶接機は、鋼板を次々と接合することで生産性を向上させるものである。
【０００３】
これらの溶接機には、溶接時に生じるバリを除去するバリ取り装置が内蔵されており、鋼板上下面の幅方向へ筋状に生じたバリを、鋼板の幅方向すなわちバリの長手方向へ切削し、表面を平滑化している。上記の特許文献２では、さらに切削刃の寿命を考慮し、切削刃を容易に交換可能な構造としている。
【０００４】
また、溶接機と圧延機の間に単独のバリ取り装置を固定しておき、バリの生じた鋼板がバリ取り装置を通過する際に、鋼板の上下面に切削刃が接近してバリを切削するようにした例もある（例えば、特許文献４参照。）。
【０００５】
また、同じく溶接機とは別にバリ取り装置を固定し、ビレット等の角材を対象として、その４面上に生じたバリを除去するようにした例もある（例えば、特許文献５または６参照。）。
【０００６】
【特許文献１】
特公昭５２−０５００２１号公報
【０００７】
【特許文献２】
特開昭５３−１４７６４９号公報
【０００８】
【特許文献３】
特開昭５４−０１８４３９号公報
【０００９】
【特許文献４】
特開昭６１−０３０２８７号公報
【００１０】
【特許文献５】
特開昭５２−０４３７５４号公報
【００１１】
【特許文献６】
特公昭５７−０１１７２２号公報
【００１２】
【発明が解決しようとする課題】
しかしながら、前述の特許文献１〜３等に示された、筋状のバリをその長手方向へ切削する方法は、切削荷重を低減させる簡単な方法ではあるが、切削距離が長く時間がかかる欠点がある。さらに、バリをその長手方向へ切削するためには、バリ取り装置を移送される鋼材に追従させる必要があり、従来は走行式溶接機の内部にバリ取り装置を内蔵する形式が多かったが、この場合、バリ取りに要する時間の分、溶接機は作業を行えないため効率が低下することやバリ取り中に走行するため広いスペースが必要なこと等の問題点があった。
【００１３】
これに対して、バリ取り装置を溶接機と別に固定して設けておき、バリの生じた鋼板をバリ取り装置内へ通過させる際、切削刃等で切削する方法が考えられるが、この場合切削荷重が増加するため、前述の特許文献４等のように、従来の多くは、鋼板の溶接時等に生じる比較的小さなバリを除去する方法として用いられてきた。
【００１４】
一方、ビレット等の断面積が大きい鋼材は、溶接に必要な電力も大きく、溶接によって発生するバリも非常に大きなものになる。これを前述の特許文献５または６のようにビレットの通過時に切削によってバリ取りを行う場合、切削荷重が圧延機の引き込み力を上回る可能性が高く、既存の圧延機の能力では引き抜くことが不可能になり、モータを増強した新規圧延機や引き抜き専用のピンチロールなど補強設備が必要になる。
【００１５】
ただし、一方では鋼材の引張許容応力からも限界があり、特にビレットは熱間材でその値は小さいので、引き抜き力を大きくし過ぎると材料が伸びてしまうおそれがある。
【００１６】
また、鋼板とは異なり、ビレットは角材で４面にバリが生じるため、切削荷重もさらに増大することになり、その対応策が特に重要であるが、前述の特許文献１〜６等ではこのことに対する明確な方法が示されていない。
【００１７】
また、前述のいずれの特許文献においても、図６に示すようなビレット（角材）端部での削り残し（ダレ、カエリ等と称する）についての考慮はなされていない。このような削り残しは熱間切削では特に顕著で、十数ミリに及ぶ場合も多く、バリ取りを行っても、ダレ、カエリ等の削り残しが発生しては圧延上問題になる。
【００１８】
本発明は、上述のような問題点の解決を図ろうとするもので、切削荷重を極力低く抑えるとともに、ダレ、カエリ等の削り残しが発生しにくい角材用バリ取り装置を提供することを目的としている。
【００１９】
【課題を解決するための手段】
このような目的を達成するため、本発明は次のような構成を有する。
［１］角材の第１の面に生じているバリのうち、角材幅方向における一方の側のバリを切除する切削刃Ａと、角材長手方向において前記切削刃Ａと同位置で、角材の第１の面とは反対側の第２の面に生じているバリのうち、角材幅方向における他方の側のバリを切除する切削刃Ｂと、角材長手方向において前記切削刃ＡおよびＢの下流位置で、角材の第１の面に生じているバリのうち、前記切削刃Ａで切除されなかったバリを切除する切削刃Ｃと、角材長手方向において前記切削刃Ｃと同位置で、角材の第２の面に生じているバリのうち、前記切削刃Ｂで切除されなかったバリを切除する切削刃Ｄと、角材をその長手方向へ前記切削刃群Ａ〜Ｄに対して相対的に移動させる移送手段とからなることを特徴とする角材用バリ取り装置。
［２］角材の第１の面に生じているバリのうち、角材幅方向における一方の側のバリを切除する切削刃Ａと、角材長手方向において前記切削刃Ａと同位置で、角材の第１の面とは反対側の第２の面に生じているバリのうち、角材幅方向における同じ側のバリを切除する切削刃Ｂと、前記切削刃ＡおよびＢがバリを切除する側とは反対側の第３の面に当接し、前記切削刃ＡおよびＢの切削反力を受ける支持ローラと、角材長手方向において前記切削刃ＡおよびＢの下流位置で、角材の第１の面に生じているバリのうち、前記切削刃Ａで切除されなかったバリを切除する切削刃Ｃと、角材長手方向において前記切削刃Ｃと同位置で、角材の第２の面に生じているバリのうち、前記切削刃Ｂで切除されなかったバリを切除する切削刃Ｄと、前記切削刃ＣおよびＤがバリを切除する側とは反対側の第４の面に当接し、前記切削刃ＣおよびＤの切削反力を受ける支持ローラと、角材をその長手方向へ前記切削刃群Ａ〜Ｄに対して相対的に移動させる移送手段とからなることを特徴とする角材用バリ取り装置。
［３］角材の第１の面に生じているバリのうち、角材幅方向における一方の側のバリを切除する切削刃Ａと、角材長手方向において前記切削刃Ａと同位置で、角材の第１の面とは反対側の第２の面に生じているバリのうち、角材幅方向における同じ側のバリを切除する切削刃Ｂと、角材長手方向において前記切削刃Ａと同位置で、角材の第１の面に生じているバリのうち、角材幅方向における他方の側のバリを切除する切削刃Ｃと、角材長手方向において前記切削刃Ａと同位置で、角材の第２の面に生じているバリのうち、角材幅方向における他方の側のバリを切除する切削刃Ｄと、角材長手方向において前記切削刃Ａ〜Ｄの下流位置で、角材の第１の面に生じているバリのうち、前記切削刃ＡおよびＣで切除されなかったバリを切除する切削刃Ｅと、角材長手方向において前記切削刃Ｅと同位置で、角材の第２の面に生じているバリのうち、前記切削刃ＢおよびＤで切除されなかったバリを切除する切削刃Ｆと、前記切削刃ＥおよびＦがバリを切除する側とは反対側の第３の面に当接し、前記切削刃ＥおよびＦの切削反力を受ける支持ローラと、角材をその長手方向へ前記切削刃群Ａ〜Ｆに対して相対的に移動させる移送手段とからなることを特徴とする角材用バリ取り装置。
［４］角材の外周面に生じているバリを切削刃で切除するバリ取り装置であって、角材の第３の面、およびその反対側の第４の面に生じているバリをそれぞれ切除する切削刃ＧおよびＨを備えたことを特徴とする前項［１］〜［３］に記載の角材用バリ取り装置。
［５］切削刃が円形であることを特徴とする前項［１］〜［４］に記載の角材用バリ取り装置。
［６］角材を接合する走行式溶接機と、該走行式溶接機の内部に設けられ、角材の第１の面、およびその反対側の第２の面に生じた溶接バリを角材幅方向にそれぞれ切除する切削刃と、前記走行式溶接機の下流側に固定され、角材の第３の面、およびその反対側の第４の面に生じた溶接バリを切除する、前項［１］、［２］、［３］または［５］に記載の角材用バリ取り装置と、バリ取り後の角材を圧延する圧延装置とを備えたことを特徴とする連続圧延設備。
【００２０】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。
【００２１】
図１は第１の実施形態の説明図、図２は第２の実施形態の説明図、図３は第３の実施形態の説明図、図４は第４の実施形態の説明図、図５は第５の実施形態の説明図である。
【００２２】
図１に示す第１の実施形態では、固定部１ａに接続部２ａを介して設けられた刃物台３ａに回転自在に取り付けられた切削刃Ａによって、角材の第１の面に生じているバリのうち、角材幅方向における一方の側のバリを切除する。
【００２３】
図７に示すように、切削刃がバリの片側だけに当たるようにすると、切削荷重を半減させることができ、かつ切削荷重に水平分力が生じるため、圧延機方向分力即ち圧延機引込力を低減することができる。ただし、この場合、生じた水平分力の反力によって角材（ビレット）が逃げてしまうことになる。
【００２４】
そこで、図８に示すように、切削刃Ａと同様に構成された切削刃Ｂによって、角材の第１の面とは反対側の第２の面では、角材幅方向における他方の側のバリを切除するようにすると、水平分力が打ち消されて、鋼材のように剛性の高い材料であれば大きく逃げることなくバリ取りできる。このとき、切削荷重の垂直反力も発生するが、これは切削刃ＡとＢとの間で打ち消される。水平分力と垂直反力の大きさと作用点の関係がずれると、角材を回転させる偶力が生じるが、その大きさは一般に小さい。
【００２５】
上述のようにして、角材の第１の面と第２の面とのそれぞれ片側ずつのバリを除去したので、残存する半分のバリも同様にして、切削刃ＡおよびＢの下流側に設けられた切削刃ＣおよびＤによって除去できる。
【００２６】
また、図９に示すように、この残り半分のバリを除去する際、角材が水平分力により若干逃げても確実にバリを除去できるように、先に半分除去した境目よりも、多めにオーバラップするように切削刃ＣおよびＤの位置を決定する。
【００２７】
なお、本実施形態では、角材の第１および第２の面にそれぞれ２個ずつの切削刃が当たるようにしたが、図１０に示すように、これを３個以上に増やして多段切削とし、荷重を低減することは容易に実施できる。
【００２８】
図２に示す第２の実施形態では、各切削刃における切削の原理やその効果は第１の実施形態と同様であるので、相違する部分について説明する。
【００２９】
本実施形態では、角材の第１の面、および反対側の第２の面に生じたバリを取る場合、第１の面のバリ半分を切除する切削刃Ａと同じ側に、第２の面のバリ半分を切除する切削刃Ｂを配置する。即ち、横断面において同じ側のバリを半分ずつ切除することになる。
【００３０】
この場合、図１１に示すように、第１の実施形態とは異なり、切削抵抗の垂直反力は打ち消し合うが、水平方向分力は２倍になってしまう。そのため、角材の逃げを抑える支持サポートを配置する必要がある。
【００３１】
この第２の実施形態は、第１の実施形態で水平分力や垂直反力のバランスが悪く、回転力が生じてしまう場合でも水平分力を打ち消す支持ローラ５ａ、５ｃがあるので、応用範囲は広い。
【００３２】
また、図１２に示すように、対向する切削刃Ａ、Ｂの切刃先端を角材長手方向にずらして配置することで、切削荷重の低減が図れる。即ち、角材の第１の面、および反対側の第２の面に生じたバリを同時に切削するのではなく、例えば第１の面のバリを切削し終わる時点で第２の面のバリを切削し始めることにより、切削荷重の最大値を抑えて平滑化するものである。ただしこの場合、装置全体の長さがずらした分だけ増すため、スペースの問題との兼ね合いで、状況によって使い分ける必要がある。
【００３３】
図３に示す第３の実施形態では、各切削刃における切削の原理やその効果は第１および第２の実施形態と同様であるので、相違する部分について説明する。
【００３４】
本実施形態では、第２の実施形態のように支持ローラで切削反力を受けるかわりに、同じ面のバリを切除する切削刃を２つ用いて、バリの両端を同時に切除することにより切削反力を相殺させている。この場合、バリの中央部は別の切削刃で除去するため、各切削刃に作用する切削荷重は略３等分することが可能である。例えば、上面については、バリの両側を切削刃ＡおよびＣで切除し、中央部を下流側の切削刃Ｅで切除する。また、下面については、バリの両側を切削刃ＢおよびＤで切除し、中央部を下流側の切削刃Ｆで切除する。この工程を側面でも同様にして行うことで、角材全面のバリ取りが可能である。いずれの切削刃においても、切削刃の回転中心は角材の端面より外側に設置しているため、バリの切削により切削刃が角材中心方向へ回転し、バリは角材の中央部へ向かって除去される。したがって、切削刃の切刃は常に更新され、角材角部では削り残しが発生しない。なお、切削刃ＥおよびＦは、角材の幅方向の中央部に残存したバリを切除するため、回転中心を角材の外側に設置すると、他の切削刃Ａ〜Ｄよりも直径を大きくする必要がある。
【００３５】
上述の第１〜第３の実施形態を組み合わせれば、角材の長手方向に本装置を多段に配置することにより、角材の外周４面のバリを全て除去することができる。しかし、このような形態は、圧延方向の長さが十分にとれる場合のものであり、圧延方向の長さをコンパクトにしたい場合には次のような形態が適用される。
【００３６】
図４に示す第４の実施形態では、角材の第１の面、およびその反対側の第２の面に生じているバリを上述の第１〜第３の実施形態に示した装置で切削除去するとともに、角材の残りの面である第３の面、およびその反対側の第４の面に生じているバリはそれぞれ角材の幅よりも径の大きい切削刃ＧおよびＨによって一度に切削除去する。
【００３７】
例えば角材の第３の面、およびその反対側の第４の面に生じているバリを先に切削する場合、角材の幅よりも径の大きい切削刃ＧおよびＨでそれぞれの面のバリ取りを行うと、それぞれの面にダレ、カエリが生じるが、次に第１〜第３の実施形態に示す装置で角材の第１の面、およびその反対側の第２の面に生じているバリを両側から半分ずつ切削するので、最終的には図６に示すようなダレ、カエリを生じることなくバリ取りが可能となる。
【００３８】
このように、１枚の切削刃ＧまたはＨで角材の１面全体のバリ取りを行う場合には、切削荷重が相当大きくなるので、装置強度や切削刃強度を高める必要があり、また、切削反力で切削刃を回転させることができないので、切削刃を回転駆動する必要がある。
【００３９】
図５に示す第５の実施形態では、角材を接合する走行式溶接機に内蔵したバリ取り装置によって、角材の第１の面、およびその反対側の第２の面に生じた溶接バリを角材の幅方向に切削刃を移動させることによりそれぞれ切除した後、この走行式溶接機の下流側に固定した、本発明の第１〜第３の実施形態に示すバリ取り装置によって、角材の残りの２面、即ち、第３の面、およびその反対側の第４の面に生じた溶接バリを切除する。
【００４０】
本実施形態において、先に角材の両側面のバリ取りを走行式溶接機に内蔵したバリ取り装置で行うと、下面に削り残しを生じてしまい、角材の移送上不都合である。したがって、角材の上下面のバリ取りを走行式溶接機に内臓のバリ取り装置で行い、その後、角材の両側面のバリ取りを走行式溶接機の下流側に固定した、本発明の第１〜第３の実施形態に示すバリ取り装置によって行うのが好ましい形態である。
【００４１】
なお、本実施形態のバリ取り装置と、溶接バリ取り後の角材を圧延する圧延装置とを備えることにより、連続圧延設備を構成することができる。
【００４２】
上述の各実施形態において、切削刃としては、円形の切削刃を用いるのが好ましい形態である。切削刃が円形であれば、切刃稜線が円弧であるため切刃稜線のどの位置でも切削可能であり、実質的に切刃面が増えて寿命が延びる効果がある。この円形切削刃を刃物台に回転自在に取り付ければ、上述のような配置では切削刃が切削時に自然に回転するため、切削刃の交換サイクルが非常に伸びることになる。
【００４３】
また、本発明では、このような切削刃によりバリを両側から半分ずつ切削するので、ビレット端面でのカエリ、ダレの発生がない。
【００４４】
なお、本発明のバリ取り装置は、ビレット等の角材を対象としているが、鋼板等にも適用可能である。
【００４５】
【発明の効果】
以上に述べた本発明によれば、つぎのような効果が得られる。
【００４６】
本発明の第１〜第３の実施形態によれば、従来、圧延方向に切削すると切削荷重が増大してしまう問題に対し、バリを角材の幅方向に略半分ずつ切削することにより、切削荷重が分散し、水平方向分力が発生して圧延方向の荷重を小さくすることができるため、圧延機の負担を軽減でき、追加の引込装置等が不要となる。特に回転自在の円形切削刃を用いれば、無駆動で切刃面が更新されるので、切削刃の寿命が増大する。
【００４７】
さらに、角ビレットのように４面のバリ取りが必要な場合でも、荷重を増大させることなく、また、各面の切削刃を干渉させることなく、切削することができる。
【００４８】
特に熱間切削の場合、切削後に端面でダレ、カエリが生じる問題があったが、この点も解消できる。
【００４９】
また、本発明の第４の実施形態によれば、圧延方向の装置寸法を小さくすることができる。また、この場合にもダレ、カエリの問題は生じない。
【００５０】
また、本発明の第５の実施形態によれば、角材の外周４面のうち２面を受け持つバリ取り装置をコンパクトにでき、残り２面を受け持つバリ取り装置で削り残しのないバリ取りが可能となる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態を示す説明図
【図２】本発明の第２の実施形態を示す説明図
【図３】本発明の第３の実施形態を示す説明図
【図４】本発明の第４の実施形態を示す説明図
【図５】本発明の第５の実施形態を示す説明図
【図６】切削刃による切削状況を示す説明図
【図７】バリから切削刃に作用する分力を示す平面図
【図８】第１の実施形態における切削荷重を示す横断面図
【図９】バリと切削刃の位置関係を示す平面図
【図１０】多段切削の概念を示す説明図
【図１１】第２の実施形態における切削荷重を示す横断面図
【図１２】切削荷重の平準化を示す説明図
【符号の説明】
１ａ、１ｃ、１ｅ、１ｇ固定部
２ａ〜２ｈ接続部
３ａ〜３ｈ刃物台
５ａ、５ｃ、５ｅ支持ローラ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a deburring device that removes burrs generated on the surface of a square bar with a cutting blade, and in particular, a burr for removing weld burrs generated in a welded portion of a billet continuous with a welding machine in a continuous rolling facility. It relates to a take-off device.
[0002]
[Prior art]
As welding machines for continuous rolling equipment, flash welding machines (or flash butt welding machines) and the like are known (for example, see Patent Documents 1, 2, or 3). These welding machines improve productivity by joining steel plates one after another.
[0003]
These welding machines have a built-in deburring device that removes burrs generated during welding, and the burrs generated in the form of streaks in the width direction of the upper and lower surfaces of the steel sheet are cut in the width direction of the steel sheet, that is, in the longitudinal direction of the burr. The surface is smoothed. In the above-mentioned Patent Document 2, the cutting blade life is further considered, and the cutting blade can be easily replaced.
[0004]
In addition, a single deburring device is fixed between the welding machine and the rolling mill, and when the steel plate with burrs passes through the deburring device, the cutting blade approaches the upper and lower surfaces of the steel plate to cut the burrs. There is also an example of doing so (for example, see Patent Document 4).
[0005]
Similarly, there is an example in which a deburring device is fixed separately from a welder, and burrs generated on the four surfaces of a square member such as a billet are removed (see, for example, Patent Document 5 or 6). ).
[0006]
[Patent Document 1]
Japanese Examined Patent Publication No. 52-050021 [0007]
[Patent Document 2]
Japanese Patent Laid-Open No. 53-147649
[Patent Document 3]
Japanese Patent Laid-Open No. 54-018439
[Patent Document 4]
Japanese Patent Application Laid-Open No. 61-030287
[Patent Document 5]
Japanese Patent Laid-Open No. 52-043754
[Patent Document 6]
Japanese Patent Publication No. 57-011722 [0012]
[Problems to be solved by the invention]
However, the method of cutting the streak-like burrs in the longitudinal direction shown in the above-mentioned Patent Documents 1 to 3 is a simple method for reducing the cutting load, but has the disadvantage that the cutting distance is long and takes a long time. is there. Furthermore, in order to cut the burr in its longitudinal direction, it is necessary to make the deburring device follow the steel material to be transferred, and in the past, there were many types in which the deburring device was built in the traveling welding machine, In this case, the welding machine cannot perform the work for the time required for deburring, so that the efficiency is lowered, and there is a problem that a large space is required for traveling during deburring.
[0013]
On the other hand, a method of cutting with a cutting blade or the like when the deburring device is fixed separately from the welding machine and the steel plate with burrs is allowed to pass through the deburring device can be considered. Since the load increases, many of the conventional techniques have been used as a method for removing relatively small burrs that occur during welding of steel sheets, as described in Patent Document 4 and the like.
[0014]
On the other hand, a steel material having a large cross-sectional area such as a billet requires a large amount of electric power for welding, and the burrs generated by welding are very large. When deburring is performed by cutting when the billet passes as described in Patent Document 5 or 6 described above, it is highly possible that the cutting load exceeds the pulling force of the rolling mill, and it is impossible to pull out with the capability of the existing rolling mill. It will be possible, and will require reinforcement equipment such as a new rolling mill with an enhanced motor and a pinch roll dedicated to drawing.
[0015]
However, on the other hand, there is a limit from the allowable tensile stress of the steel material. In particular, since the billet is a hot material and its value is small, the material may be stretched if the pulling force is excessively increased.
[0016]
Also, unlike a steel plate, billets are square bars and burrs are generated on four sides, so the cutting load will further increase, and countermeasures are particularly important. The clear method for is not shown.
[0017]
In any of the above-mentioned patent documents, no consideration is given to uncut parts (referred to as sagging, burrs, etc.) at the billet (corner) end as shown in FIG. Such uncut residue is particularly noticeable in hot cutting, and is often in the order of several tens of millimeters. Even if deburring is performed, uncut residue such as sagging and burrs occurs, which causes a rolling problem.
[0018]
An object of the present invention is to provide a square material deburring device that suppresses the cutting load as much as possible and is less likely to be left uncut such as sagging and burrs. Yes.
[0019]
[Means for Solving the Problems]
In order to achieve such an object, the present invention has the following configuration.
[1] Of the burrs generated on the first surface of the square bar, the cutting blade A that cuts out the burr on one side in the square bar width direction, and the first position of the square bar at the same position as the cutting blade A in the square bar longitudinal direction A cutting blade B that cuts the burr on the other side in the square bar width direction among the burrs generated on the second surface opposite to the first surface, and a downstream position of the cutting blades A and B in the square bar longitudinal direction Then, among the burrs generated on the first surface of the square bar, the cutting blade C for cutting the burr that has not been cut by the cutting blade A, and the first position of the square bar at the same position as the cutting blade C in the square bar longitudinal direction. The cutting blade D that cuts the burr that has not been cut by the cutting blade B among the burrs generated on the surface 2 and the square member are moved relative to the cutting blade group A to D in the longitudinal direction. A deburring device for square material, characterized by comprising transport means.
[2] Of the burrs generated on the first surface of the square bar, the cutting blade A that cuts off the burr on one side in the square bar width direction, and the first position of the square bar at the same position as the cutting blade A in the square bar longitudinal direction Among the burrs generated on the second surface opposite to the first surface, the cutting blade B that cuts the same burr in the square width direction and the side on which the cutting blades A and B cut the burr A support roller that abuts against the third surface on the opposite side and receives the cutting reaction force of the cutting blades A and B, and is generated on the first surface of the square member at a position downstream of the cutting blades A and B in the longitudinal direction of the square member. Of the burrs, the cutting blade C that cuts the burrs that have not been cut by the cutting blade A, and the burrs that are formed on the second surface of the square bar at the same position as the cutting blade C in the longitudinal direction of the square bar , A cutting blade D for cutting a burr that has not been cut by the cutting blade B, and the cutting C and D are in contact with a fourth surface opposite to the side from which burrs are cut off, a support roller that receives the cutting reaction force of the cutting blades C and D, and a square member in the longitudinal direction of the cutting blade groups A to A. A deburring device for square material, characterized by comprising transfer means that moves relative to D.
[3] Of the burrs generated on the first surface of the square bar, a cutting blade A that cuts out a burr on one side in the square bar width direction, and the first position of the square bar at the same position as the cutting blade A in the square bar longitudinal direction. A cutting blade B that cuts out the burr on the same side in the square width direction among the burrs generated on the second surface opposite to the first surface, and a square material at the same position as the cutting blade A in the square material longitudinal direction. The cutting blade C that cuts the burr on the other side in the square bar width direction among the burrs generated on the first surface of the square bar, and the second surface of the square bar at the same position as the cutting blade A in the square bar longitudinal direction Among the generated burrs, the cutting blade D for cutting off the burrs on the other side in the square bar width direction, and the burrs generated on the first surface of the square bar at the downstream position of the cutting blades A to D in the square bar longitudinal direction. Of these, cuttings for cutting burrs that have not been cut with the cutting blades A and C A cutting blade F for cutting off burrs that have not been cut by the cutting blades B and D among the burrs formed on the second surface of the square bar at the same position as the cutting blade E in the longitudinal direction of the square bar The cutting blades E and F are in contact with the third surface opposite to the side from which the burrs are cut off, a support roller that receives the cutting reaction force of the cutting blades E and F, and a square member in the longitudinal direction thereof. A deburring device for square material, characterized by comprising transfer means that moves relative to the blade groups A to F.
[4] A deburring device that cuts off burrs generated on the outer peripheral surface of a square bar with a cutting blade, and cuts out burrs generated on the third side of the square bar and the fourth side on the opposite side. The deburring device for square bars according to the above-mentioned items [1] to [3], comprising cutting blades G and H.
[5] The square material deburring device according to [1] to [4], wherein the cutting blade is circular.
[6] A traveling welder that joins square bars, and a welding burr provided on the first surface of the square bar and the second surface on the opposite side thereof is provided in the square bar width direction. [1], [1], [1], [Cutting blades to be cut respectively, and fixed to the downstream side of the traveling type welder, to cut the third surface of the square bar and the weld burrs generated on the fourth surface on the opposite side. 2], [3] or [5] A continuous rolling facility comprising the deburring device for square bars and a rolling device for rolling the square bars after deburring.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0021]
1 is an explanatory diagram of the first embodiment, FIG. 2 is an explanatory diagram of the second embodiment, FIG. 3 is an explanatory diagram of the third embodiment, FIG. 4 is an explanatory diagram of the fourth embodiment, and FIG. These are explanatory drawings of 5th Embodiment.
[0022]
In the first embodiment shown in FIG. 1, the burr generated on the first surface of the square bar by the cutting blade A rotatably attached to the tool post 3a provided to the fixed portion 1a via the connecting portion 2a. Among them, the burr on one side in the square bar width direction is cut out.
[0023]
As shown in FIG. 7, if the cutting blade hits only one side of the burr, the cutting load can be halved and a horizontal component is generated in the cutting load. Can be reduced. However, in this case, the square (billet) escapes due to the reaction force of the generated horizontal component force.
[0024]
Therefore, as shown in FIG. 8, the cutting blade B configured in the same manner as the cutting blade A causes the burr on the other side in the square member width direction to be formed on the second surface opposite to the first surface of the square member. If it cuts off, horizontal component force will be canceled and if it is a material with high rigidity like steel materials, it can deburr, without escaping greatly. At this time, a vertical reaction force of the cutting load is also generated, but this is canceled between the cutting blades A and B. If the relationship between the magnitude of the horizontal component force and the vertical reaction force and the point of action shifts, a couple force that rotates the square member is generated, but the magnitude is generally small.
[0025]
As described above, since the burrs on one side of each of the first surface and the second surface of the square bar are removed, the remaining half burrs are similarly provided on the downstream side of the cutting blades A and B. Can be removed by the cutting blades C and D.
[0026]
In addition, as shown in FIG. 9, when removing the remaining half of the burr, the burr can be surely removed even if the square bar escapes slightly due to the horizontal component force. The positions of the cutting blades C and D are determined so as to wrap.
[0027]
In the present embodiment, two cutting blades hit each of the first and second surfaces of the square bar, but as shown in FIG. 10, this is increased to three or more to make multi-stage cutting, It is easy to reduce the load.
[0028]
In the second embodiment shown in FIG. 2, the cutting principle and the effect of each cutting blade are the same as those in the first embodiment, and different parts will be described.
[0029]
In this embodiment, when removing the burr produced on the first surface of the square bar and the second surface on the opposite side, the second surface is located on the same side as the cutting blade A for cutting off the burr half of the first surface. A cutting blade B that cuts off the burr half is arranged. That is, the burrs on the same side in the cross section are cut in half.
[0030]
In this case, as shown in FIG. 11, unlike the first embodiment, the vertical reaction force of the cutting resistance cancels out, but the horizontal component force is doubled. Therefore, it is necessary to arrange a support support that suppresses escape of the square bar.
[0031]
In the second embodiment, the balance between the horizontal component force and the vertical reaction force is poor in the first embodiment, and there are support rollers 5a and 5c that cancel the horizontal component force even when a rotational force is generated. Is wide.
[0032]
Moreover, as shown in FIG. 12, the cutting load can be reduced by shifting the cutting blade tips of the opposing cutting blades A and B in the longitudinal direction of the square bar. That is, instead of simultaneously cutting the burr produced on the first surface of the square bar and the second surface on the opposite side, for example, the burr on the second surface is cut when the burr on the first surface is finished. By starting, the maximum value of the cutting load is suppressed and smoothed. However, in this case, since the entire length of the apparatus increases by the amount of deviation, it is necessary to use properly depending on the situation in consideration of the space problem.
[0033]
In the third embodiment shown in FIG. 3, the cutting principle and the effect of each cutting blade are the same as those in the first and second embodiments, and different portions will be described.
[0034]
In this embodiment, instead of receiving the cutting reaction force by the support roller as in the second embodiment, two cutting blades for cutting burrs on the same surface are used, and both ends of the burrs are cut simultaneously to cut the cutting reaction. The power is offset. In this case, since the central part of the burr is removed by another cutting blade, the cutting load acting on each cutting blade can be divided into approximately three equal parts. For example, with respect to the upper surface, both sides of the burr are cut with the cutting blades A and C, and the central portion is cut with the cutting blade E on the downstream side. As for the lower surface, both sides of the burr are cut with the cutting blades B and D, and the central portion is cut with the downstream cutting blade F. By performing this process in the same manner on the side surface, it is possible to deburr the entire square bar. In any of the cutting blades, the center of rotation of the cutting blade is located outside the end face of the square bar. The Therefore, the cutting blade of the cutting blade is constantly updated, and no uncut material is generated at the corner of the square bar. Note that the cutting blades E and F cut off the burrs remaining in the center portion in the width direction of the square bar. Therefore, if the rotation center is installed outside the square bar, it is necessary to make the diameter larger than the other cutting blades A to D. is there.
[0035]
If the first to third embodiments described above are combined, all burrs on the outer peripheral four surfaces of the square bar can be removed by arranging the apparatus in multiple stages in the longitudinal direction of the square bar. However, such a form is a case where the length in the rolling direction can be sufficiently taken, and the following form is applied when it is desired to make the length in the rolling direction compact.
[0036]
In the fourth embodiment shown in FIG. 4, burrs generated on the first surface of the square member and the second surface on the opposite side are removed by the apparatus shown in the first to third embodiments. At the same time, the burrs formed on the third surface, which is the remaining surface of the square bar, and the fourth surface on the opposite side are cut and removed at once by the cutting blades G and H having a diameter larger than the width of the square bar. .
[0037]
For example, when the burr generated on the third surface of the square bar and the fourth surface on the opposite side is cut first, the deburring of each surface is performed with the cutting blades G and H having a diameter larger than the width of the square bar. If done, sagging and burring will occur on each surface. Next, with the apparatus shown in the first to third embodiments, burrs generated on the first surface of the square bar and the second surface on the opposite side will be removed. Since half cutting is performed from both sides, it is finally possible to remove the burrs without causing sagging or burrs as shown in FIG.
[0038]
Thus, when deburring the entire surface of a square bar with one cutting blade G or H, the cutting load becomes considerably large, so it is necessary to increase the device strength and the cutting blade strength, Since the cutting blade cannot be rotated by the reaction force, it is necessary to rotationally drive the cutting blade.
[0039]
In the fifth embodiment shown in FIG. 5, the welding burr produced on the first surface of the square member and the second surface on the opposite side is removed by the deburring device built in the traveling welding machine for joining the square members. After the cutting blades are cut in the width direction, the deburring devices shown in the first to third embodiments of the present invention fixed to the downstream side of the traveling type welding machine, The welding burr generated on the second surface, that is, the third surface and the fourth surface on the opposite side is cut off.
[0040]
In this embodiment, if the deburring of the both sides of the square bar is first performed with a deburring device built in the traveling type welding machine, uncut material is generated on the lower surface, which is inconvenient in transporting the square bar. Accordingly, the deburring of the upper and lower surfaces of the square bar is performed with a built-in deburring device in the traveling welder, and then the deburring of both side surfaces of the square bar is fixed to the downstream side of the traveling welder. It is a preferable form to carry out by the deburring apparatus shown in the third embodiment.
[0041]
In addition, a continuous rolling facility can be comprised by providing the deburring apparatus of this embodiment, and the rolling apparatus which rolls the square material after welding deburring.
[0042]
In each of the embodiments described above, it is preferable to use a circular cutting blade as the cutting blade. If the cutting blade is circular, since the cutting edge ridge line is an arc, cutting is possible at any position on the cutting edge ridge line, and there is an effect of substantially increasing the cutting edge surface and extending the life. If this circular cutting blade is rotatably attached to the tool post, the cutting blade rotates naturally during cutting in the above-described arrangement, so that the replacement cycle of the cutting blade is greatly extended.
[0043]
Further, in the present invention, since the burr is cut by half from both sides with such a cutting blade, there is no occurrence of burrs and sagging on the billet end face.
[0044]
The deburring device of the present invention is intended for a square member such as a billet, but can also be applied to a steel plate or the like.
[0045]
【The invention's effect】
According to the present invention described above, the following effects can be obtained.
[0046]
According to the first to third embodiments of the present invention, conventionally, the cutting load is increased by cutting the burrs substantially half by half in the width direction of the square member in order to increase the cutting load when cutting in the rolling direction. Is distributed and a horizontal component force is generated to reduce the load in the rolling direction. Therefore, the burden on the rolling mill can be reduced, and an additional drawing device or the like is not required. In particular, when a rotatable circular cutting blade is used, the cutting blade surface is renewed without driving, and the life of the cutting blade is increased.
[0047]
Furthermore, even when deburring of four surfaces is necessary like a square billet, cutting can be performed without increasing the load and without causing the cutting blades on each surface to interfere.
[0048]
In particular, in the case of hot cutting, there is a problem that sagging and burrs occur at the end face after cutting, but this point can also be solved.
[0049]
Moreover, according to the 4th Embodiment of this invention, the apparatus dimension of a rolling direction can be made small. In this case, the problem of sagging and burrs does not occur.
[0050]
In addition, according to the fifth embodiment of the present invention, the deburring device that handles two of the four outer peripheral surfaces of the square bar can be made compact, and the deburring device that handles the remaining two surfaces can be deburred without leaving any shavings. It becomes.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a first embodiment of the present invention. FIG. 2 is a diagram illustrating a second embodiment of the present invention. FIG. 3 is a diagram illustrating a third embodiment of the present invention. 4 is an explanatory view showing a fourth embodiment of the present invention. FIG. 5 is an explanatory view showing a fifth embodiment of the present invention. FIG. 6 is an explanatory view showing a cutting state by a cutting blade. FIG. 8 is a cross-sectional view showing the cutting load in the first embodiment. FIG. 9 is a plan view showing the positional relationship between the burr and the cutting blade. FIG. 10 is a concept of multi-stage cutting. FIG. 11 is a cross-sectional view showing the cutting load in the second embodiment. FIG. 12 is an explanatory view showing leveling of the cutting load.
1a, 1c, 1e, 1g Fixed part 2a-2h Connection part 3a-3h Tool post 5a, 5c, 5e Support roller

Claims

Of the burrs generated on the first surface of the square bar, the cutting blade A that cuts off the burr on one side in the square bar width direction, and the first surface of the square bar at the same position as the cutting blade A in the longitudinal direction of the square bar Cutting blade B for cutting off the other side burr in the square bar width direction among the burrs generated on the second surface opposite to the side, and the square bar at the downstream position of the cutting blades A and B in the square bar longitudinal direction. Among the burrs generated on the first surface, the cutting blade C that cuts the burr that has not been cut by the cutting blade A, and the second surface of the square bar at the same position as the cutting blade C in the square bar longitudinal direction A cutting blade D that cuts a burr that has not been cut by the cutting blade B, and a transfer means that moves a square member relative to the cutting blade group A to D in its longitudinal direction. A deburring device for square bars, comprising:

Of the burrs generated on the first surface of the square bar, the cutting blade A that cuts off the burr on one side in the square bar width direction, and the first surface of the square bar at the same position as the cutting blade A in the longitudinal direction of the square bar Among the burrs generated on the second surface opposite to the cutting edge B, the cutting blade B for cutting off the same side burr in the square bar width direction and the cutting blades A and B on the side opposite to the side on which the burr is cut off A support roller that comes into contact with the third surface and receives the cutting reaction force of the cutting blades A and B, and a burr generated on the first surface of the square member at a downstream position of the cutting blades A and B in the square member longitudinal direction. Of the burrs that are formed on the second surface of the square bar at the same position as the cutting blade C in the longitudinal direction of the square bar, the cutting blade C that cuts the burr that has not been cut by the cutting blade A Cutting blade D for cutting off burrs not cut by blade B, and cutting blade C And D are in contact with the fourth surface opposite to the side from which the burrs are to be cut off, a support roller that receives the cutting reaction force of the cutting blades C and D, and the cutting blade group A to D in the longitudinal direction. A deburring device for square material, characterized by comprising transfer means that moves relative to the square.

Of the burrs generated on the first surface of the square bar, the cutting blade A that cuts off the burr on one side in the square bar width direction, and the first surface of the square bar at the same position as the cutting blade A in the longitudinal direction of the square bar The cutting blade B that cuts out the burrs on the same side in the square bar width direction among the burrs generated on the second surface opposite to the first side of the square bar at the same position as the cutting blade A in the square bar longitudinal direction. The cutting blade C that cuts the burr on the other side in the square bar width direction and the second surface of the square bar in the same position as the cutting blade A in the square bar longitudinal direction Of the burrs, the cutting blade D for cutting off the burrs on the other side in the square bar width direction, and the burrs generated on the first surface of the square bar at the downstream position of the cutting blades A to D in the square bar longitudinal direction, Cutting blade E for cutting burrs not cut by the cutting blades A and C The cutting blade F for cutting off the burrs that have not been cut by the cutting blades B and D among the burrs generated on the second surface of the square bar at the same position as the cutting blade E in the longitudinal direction of the square bar, and the cutting The blades E and F are in contact with the third surface opposite to the side from which the burrs are to be cut off, a support roller that receives the cutting reaction force of the cutting blades E and F, and the cutting blade group A in the longitudinal direction thereof. A deburring device for square material, characterized by comprising transfer means that moves relative to F.

A deburring device that cuts off burrs generated on the outer peripheral surface of a square bar with a cutting blade, the cutting blade G cutting off burrs generated on a third surface of the square bar and a fourth surface on the opposite side. The deburring device for square bars according to claim 1, further comprising H and H.

The deburring device for square material according to claim 1, wherein the cutting blade is circular.

A traveling welder that joins square bars, and a welding burr provided on the first surface of the square bar and the second surface on the opposite side thereof are cut in the square bar width direction. 6. A cutting blade and fixed to the downstream side of the traveling type welding machine, wherein a welding burr generated on the third surface of the square bar and the fourth surface on the opposite side is cut off. A continuous rolling facility comprising: the deburring device for square bar according to 1), and a rolling device for rolling the square bar after deburring.