JPS5852474B2 - Steel pipe fusing equipment - Google Patents

Steel pipe fusing equipment

Info

Publication number
JPS5852474B2
JPS5852474B2 JP51123602A JP12360276A JPS5852474B2 JP S5852474 B2 JPS5852474 B2 JP S5852474B2 JP 51123602 A JP51123602 A JP 51123602A JP 12360276 A JP12360276 A JP 12360276A JP S5852474 B2 JPS5852474 B2 JP S5852474B2
Authority
JP
Japan
Prior art keywords
laser beam
steel pipe
reflecting mirror
projector
pipe
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
Application number
JP51123602A
Other languages
Japanese (ja)
Other versions
JPS5348045A (en
Inventor
寿夫 吉田
且則 原
稔光 秋葉
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP51123602A priority Critical patent/JPS5852474B2/en
Publication of JPS5348045A publication Critical patent/JPS5348045A/en
Publication of JPS5852474B2 publication Critical patent/JPS5852474B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/10—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam
    • B23K26/103—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam the laser beam rotating around the fixed workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/0665—Shaping the laser beam, e.g. by masks or multi-focusing by beam condensation on the workpiece, e.g. for focusing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/083—Devices involving movement of the workpiece in at least one axial direction
    • B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
    • B23K26/0846—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt for moving elongated workpieces longitudinally, e.g. wire or strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/40—Removing material taking account of the properties of the material involved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Description

【発明の詳細な説明】 この発明は鋼管溶断装置に関し、特に走行移動状態にあ
る鋼管を所定寸度毎に溶断するための鋼管溶断装置に係
わるものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steel pipe fusing device, and more particularly to a steel pipe fusing device for fusing and cutting a moving steel pipe at predetermined size intervals.

一般に製管機、例えば帯鋼を素材として溶接鋼管を成形
する製管機は、第１図に示すように、素材帯鋼１を複数
列からなる成形ロール群２により、次第に断面円筒形に
成形してゆき、最後にその両側突き合わせ面の相互を、
プレッシャロール３の支持下に溶接電極４によって、通
常、小径管であれば抵抗溶接により、また大径管であれ
ばサブマージアーク溶接により溶接して鋼管５を形成す
ると共に、続いてこの鋼管５を所定寸度に切断し製品と
している。In general, a pipe making machine, for example, a pipe making machine that forms a welded steel pipe using steel strip as a raw material, gradually forms a raw steel strip 1 into a cylindrical cross-section using a group of forming rolls 2 consisting of multiple rows, as shown in Fig. 1. Finally, the abutting surfaces on both sides are
A steel pipe 5 is formed by welding a small diameter pipe by resistance welding and a large diameter pipe by submerged arc welding using a welding electrode 4 under the support of a pressure roll 3. The product is cut to a specified size.

しかしてこのような製管機では、前記鋼管５自体が走行
移動しているために、これをこの状態で所定寸度に切断
することが困難であり、この種の製管ラインの自動化を
妨げるものであった。However, in such a pipe making machine, since the steel pipe 5 itself is traveling and moving, it is difficult to cut the steel pipe 5 to a predetermined size in this state, which hinders automation of this type of pipe making line. It was something.

この発明は以上のような従来の実情に鑑み、成形を終了
した鋼管を、走行移動状態のま＼で所定寸度毎に溶断で
きるようにしたものである。The present invention has been developed in view of the above-mentioned conventional circumstances, and is designed to allow a steel pipe that has been formed to be melt-cut to a predetermined size while it is being moved.

以下この発明の実施例につき、第２図および第３図を参
照して詳細に説明する。Embodiments of the present invention will be described in detail below with reference to FIGS. 2 and 3.

第２図はこの発明に係わる鋼管溶断装置の一実施例によ
る構成の概要を示している。FIG. 2 shows an outline of the construction of an embodiment of a steel pipe fusing device according to the present invention.

この第２図および第３図において、１１は前記した製管
機、１２ばこの製管機１１により連続的に成形される鋼
管であり、速度Ｖｘで走行移動状態にある。In FIGS. 2 and 3, reference numeral 11 denotes a steel pipe that is continuously formed by the above-described pipe making machine 12, and is in a traveling state at a speed Vx.

また１３は前記鋼管１２の軸心線に向けてレーザビーム
を放出するレーザ発振器、１５は同様に鋼管１２の軸心
線上に配設され、駆動モータ１６により回転し得るよう
にした回転反射鏡、１７ばこの回転反射鏡１５の回転中
心を中心とする同心円上において、前記鋼管１２の外径
よりも大きい円環状をなしで配設された断面円錐平面の
環状反射鏡であって、これら両度射鏡１５，１７により
レーザビーム投光器１４を形成している。Further, 13 is a laser oscillator that emits a laser beam toward the axis of the steel pipe 12, and 15 is a rotary reflecting mirror that is similarly arranged on the axis of the steel pipe 12 and can be rotated by a drive motor 16. 17 is an annular reflecting mirror with a conical plane in cross section, which is disposed on a concentric circle centered on the rotation center of the rotating reflecting mirror 15 of the cigarette but not having an annular shape larger than the outer diameter of the steel pipe 12; The projecting mirrors 15 and 17 form a laser beam projector 14.

さらに１８は前記環状反射鏡１７に対応して、前記鋼管
１２の外周囲同心円上に配設された断面円錐凹面の環状
反射鏡１９からなるレーザビーム集光器であって、台車
２０上に支持されてガイドレール２１上を、前記鋼管１
２の走行に一致して、同方向に同速度で移動できるよう
にしたものである。Further, reference numeral 18 denotes a laser beam concentrator consisting of an annular reflecting mirror 19 having a concave conical cross section and disposed on a concentric circle around the outer circumference of the steel pipe 12, corresponding to the annular reflecting mirror 17, and supported on the cart 20. The steel pipe 1 is
This allows the robot to move in the same direction and at the same speed in accordance with the travel in step 2.

こＮに前記レーザビームは、大気中を伝播するに際して
、吸収あるいは散乱などによる減衰がなく、また反剤鏡
などによって簡単に変向でき、かつ集光し得ることが知
られており、この発明はこのようなレーザビームの特質
を利用して、レーザ発振器を固定したまＳで、反別鏡な
どから構成されるレーザビーム殺剤系を移動させること
により、このレーザビームを前記走行移動中の鋼管切断
線上に順次に導いて溶断するようにしたものである。In addition, it is known that the laser beam is not attenuated due to absorption or scattering when propagating through the atmosphere, and can be easily deflected and focused using a repellent mirror, etc., and the present invention Utilizing these characteristics of the laser beam, by moving the laser beam killing system consisting of a mirror and the like while keeping the laser oscillator fixed, the laser beam can be killed while the laser beam is traveling. The pipes are guided sequentially along the steel pipe cutting line and fused.

すなわち、前記構成において、レーザ発振器１３から放
出されるレーザビーム１３ａは、レーザビーム投光器１
４を形成している回転反射鏡１５の回転駆動に伴い、回
転軸心上から放射状方向に向け、順次円を描くように変
向移動され、かつ断面円錐平面の環状反“射鏡１７によ
りさらに変向移動されて、順次円筒を描くように移動し
て投光されると共に、またレーザービーム集光器１８を
形成している断面円錐凹面の環状反射鏡１９により、さ
らに鋼管１２の周面切断線上に沿い変向移動され、かつ
集光されて、スポット径の小さい（０，５ｍｍφ以下）
、パワー密度の高い（１００にＷ／ｄ以ムオープンアー
クの１０倍以上）スポットビームとして、スポット点２
２上に投射されるのであり、これを加熱源とし、かつこ
の点に例えば同時に切断ガスを噴豹供給することで、高
速溶断を行なうことができるのである。That is, in the above configuration, the laser beam 13a emitted from the laser oscillator 13 is transmitted through the laser beam projector 1.
As the rotating reflecting mirror 15 forming the mirror 4 is rotated, the rotating reflecting mirror 15 is sequentially moved in a circular manner from the rotation axis in a radial direction. The direction of the steel pipe 12 is changed and the light is projected by sequentially moving in a cylindrical manner, and the circumferential surface of the steel pipe 12 is further cut by the annular reflecting mirror 19 with a conical concave cross section forming the laser beam concentrator 18. The light is moved along a line and focused, with a small spot diameter (0.5 mmφ or less)
, spot point 2 as a spot beam with high power density (100 W/d or more than 10 times that of an open arc).
By using this as a heating source and simultaneously supplying cutting gas to this point, high-speed fusing can be performed.

従ってこの状態において、今、成形をおえで走行移動し
てくる鋼管１２の所定寸度の長さ位置、換言すると切断
位置がスポット点２２に至ると、レーザビーム集光器１
８がガイドレール２１に沿いこの鋼管１２の走行速度Ｖ
と同速度■ で移動を始め、同時にレーザ発振器１３
がレーザビーム１３ａの放出を開始し、かつ駆動モータ
１６の回転もなされる。Therefore, in this state, when the length position of the predetermined length of the steel pipe 12 that is currently traveling after being formed, in other words, the cutting position reaches the spot point 22, the laser beam condenser 1
8 is the running speed V of this steel pipe 12 along the guide rail 21
The laser oscillator 13 starts moving at the same speed as ■.
starts emitting the laser beam 13a, and the drive motor 16 is also rotated.

こへでこのレーザビーム１３ａは、前記したようにレー
ザビーム投光器１４を形成している回転反射鏡１５の回
転駆動に伴って、その回転軸心上から放射状方向に向け
、順次円状に変向移動されると共に、環状反射鏡１７に
より今度は順次円筒状に変向移動されてレーザービーム
集光器１８に向は投光する。As described above, this laser beam 13a is sequentially deflected in a circular manner from its rotation axis in a radial direction as the rotating reflecting mirror 15 forming the laser beam projector 14 is driven to rotate. While being moved, the annular reflecting mirror 17 sequentially changes the direction of the laser beam into a cylindrical shape to project light onto the laser beam condenser 18 .

しかしてこのレーザビーム集光器１８１Ｉ′ｉ前記鋼管
１２の走行に追随して移動されており、投光されたレー
ザビーム１３ａは、このレーザビーム集光器１８を形成
している環状反射鏡１９により変向かつ集光されて、そ
のスポット点２２を前記鋼管１２の周面切断線に沿って
移動させること＼なり、こ＼に同切断線においてこの鋼
管１２を溶断することができるのである。However, the lever laser beam condenser 181I'i is moved following the traveling of the steel pipe 12, and the projected laser beam 13a is reflected by the annular reflecting mirror 181I'i forming the laser beam condenser 18. By changing the direction and focusing the light, the spot point 22 is moved along the cutting line on the circumferential surface of the steel pipe 12, and the steel pipe 12 can be fused along the cutting line.

以上詳述したようにこの発明によるときは、レーザ発振
器を固定したま＼で、そのレーザビーム投躬系を構成し
ている反剖鏡などを移動させるだけの簡単な手段により
、このレーザビームを集光したスポット点を、走行移動
状態にある鋼管の切断線の移動に対応し、かつその切断
線に沿って追随させることができ、この操作により同鋼
管をその切断線において簡単かつ効果的に溶断し得るも
のであり、製管ラインの自動化に果す役割りが大きい。As detailed above, according to the present invention, the laser beam can be projected by simply moving the dissecting mirror or the like that constitutes the laser beam projection system while keeping the laser oscillator fixed. The focused spot point can be made to correspond to the movement of the cutting line of the moving steel pipe and follow the cutting line, and this operation allows the steel pipe to be easily and effectively moved along the cutting line. It can be melted down and plays a major role in automating pipe manufacturing lines.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は溶接鋼管を成形する従来の製管機の概要を示す
説明図、第２図はこの発明に係わる鋼管溶断装置の一実
施例による概要を示す構成国、第３図は同上レーザビー
４光器部分の断面図である、。 １１・・・・・・製管機、１２・・・・・・鋼管、１３
・・・・・・レーザ発振器、１４・・・・・・レーザビ
ーム投光器、１５・・・・・・同上回転反剤鏡、１６・
・・・・・同上駆動モータ、１７・・・・・・同上断面
円錐平面の環状反射鏡、１Ｂ・・・・・・レーザビーム
集光器、１９・・・・・・同上断面円錐凹面の環状反射
鏡、２０・・・・・・同上台車、２１・・・・・・ガイ
ドレール、２２・・・・・・レーザビームスポット点。Fig. 1 is an explanatory diagram showing an outline of a conventional pipe making machine for forming welded steel pipes, Fig. 2 is an explanatory diagram showing an outline of an embodiment of a steel pipe fusing device according to the present invention, and Fig. 3 is an explanatory diagram showing an outline of a conventional pipe making machine for forming welded steel pipes. It is a sectional view of a light device part. 11... Pipe making machine, 12... Steel pipe, 13
... Laser oscillator, 14 ... Laser beam projector, 15 ... Same as above rotating repellent mirror, 16.
... Drive motor as above, 17 ... Annular reflecting mirror with conical plane as above, 1B ... Laser beam condenser, 19 ... Same as above with concave concave cross section. Annular reflecting mirror, 20... Same as above truck, 21... Guide rail, 22... Laser beam spot point.

Claims (1)

【特許請求の範囲】 １ 製管機により成形されて走行移動している鋼管を溶
断する装置において、レーザビームを放出するレーザ発
振器と、このレーザビームを前記鋼管の同心円外周部に
順次円筒を描くように変向移動して投光するレーザビー
ム投光器と、前記鋼管の外周部に配設されてその走行速
度と同速度で移動できるようにされ、前記レーザビーム
投光器からのレーザビームを変向し、かつ集光して、前
記鋼管の切断線に沿い投射するレーザビーム集光器とか
ら構成したことを特徴とする鋼管溶断装置。 ２ 前記レーザビーム投光器を、レーザビーム放射線上
において回転する回転反射鏡と、この回転反射鏡の同心
円外周部に配設した環状反射鏡とから構成したことを特
徴とする特許 第１項記載の鋼管溶断装置。 ３ 前記レーザビーム集光器を、前記投光器からの円筒
状に頂次投射されるレーザビーム上に配した断簡円錐凹
面の環状反射鏡から構成したことを特徴とする前記特許
請求の範囲第１項記載の鋼管溶断装置。[Scope of Claims] 1. A device for fusing and cutting a steel pipe that is being formed by a pipe-making machine and is traveling, which includes a laser oscillator that emits a laser beam, and the laser beam sequentially draws a cylinder on the concentric outer circumference of the steel pipe. a laser beam projector that emits light by changing direction; and a laser beam projector that is disposed on the outer periphery of the steel pipe so that it can move at the same speed as the traveling speed of the steel pipe, and that changes the direction of the laser beam from the laser beam projector. and a laser beam condenser that condenses light and projects it along the cutting line of the steel pipe. 2. The steel pipe according to Patent No. 1, wherein the laser beam projector is composed of a rotating reflecting mirror that rotates on the laser beam radiation, and an annular reflecting mirror disposed on a concentric outer periphery of the rotating reflecting mirror. Fusing device. 3. The above-mentioned claim 1, wherein the laser beam condenser is constituted by an annular reflecting mirror having a concave section and a concave surface, which is disposed on the laser beam which is vertically projected in a cylindrical shape from the projector. The steel pipe fusing device described.
JP51123602A 1976-10-14 1976-10-14 Steel pipe fusing equipment Expired JPS5852474B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51123602A JPS5852474B2 (en) 1976-10-14 1976-10-14 Steel pipe fusing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51123602A JPS5852474B2 (en) 1976-10-14 1976-10-14 Steel pipe fusing equipment

Publications (2)

Publication Number Publication Date
JPS5348045A JPS5348045A (en) 1978-05-01
JPS5852474B2 true JPS5852474B2 (en) 1983-11-22

Family

ID=14864663

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51123602A Expired JPS5852474B2 (en) 1976-10-14 1976-10-14 Steel pipe fusing equipment

Country Status (1)

Country Link
JP (1) JPS5852474B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2001246853A1 (en) 2000-04-06 2001-10-23 Hamamatsu Photonics K.K. X-ray inspection system
CH700083A2 (en) 2008-12-03 2010-06-15 Cosmobrain Ag Method and apparatus for producing pipe sections.
DE102011013210A1 (en) * 2011-03-04 2012-09-06 Laser Zentrum Hannover E.V. Apparatus and method for processing at least one workpiece

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