JP2010162562A - Back bead removal processing unit and compressor - Google Patents

Back bead removal processing unit and compressor Download PDF

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JP2010162562A
JP2010162562A JP2009005376A JP2009005376A JP2010162562A JP 2010162562 A JP2010162562 A JP 2010162562A JP 2009005376 A JP2009005376 A JP 2009005376A JP 2009005376 A JP2009005376 A JP 2009005376A JP 2010162562 A JP2010162562 A JP 2010162562A
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back bead
removal processing
slide mechanism
workpiece
blade
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JP5361402B2 (en
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Akihiro Shimizu
聡大 清水
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain a back bead removal processing unit for stably removal processing of the back bead of a steel pipe in a cold condition, when carrying out the removal processing of the back bead formed in the pipe during manufacturing of the steel pipe by butt welding. <P>SOLUTION: A blade holder 2 in which a blade 1 for cutting the back bead is attached is fixed to a rotary shaft 9, and a frame 4 in which a guide roller 3 is mounted is fixed to a lower end of a fixed housing 8. A cylinder 5 for contacting the blade 1 for cutting the back bead to the back bead 7 is connected to a top of the fixed housing 8, and the guide roller 3 is pushed by operation of the cylinder 5 so that the guide roller 3 may run on both sides of the back bead 7. While the blade holder 2 is rotated by a motor 10 and descended by a servomotor 12 and slide mechanism 13, the back bead 7 of a steel pipe 6 is removal processed in the cold condition. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は、突合せ溶接による鋼管（以下、縦継溶接鋼管と呼ぶこともある）の製造時に縦継溶接鋼管（被加工物）の内部に形成される裏ビードの除去加工を行う裏ビード除去加工装置並びにこの裏ビード除去加工装置によって裏ビードを除去加工された鋼管を用いて構成した圧縮機に関するものである。   The present invention relates to a back bead removal process for removing a back bead formed inside a longitudinal welded steel pipe (workpiece) when manufacturing a steel pipe by butt welding (hereinafter also referred to as a longitudinal welded steel pipe). The present invention relates to an apparatus and a compressor configured using a steel pipe from which a back bead has been removed by the back bead removal processing apparatus.

従来の裏ビード（以下、裏ビードを単にビードと呼ぶこともある）除去加工装置は、電縫管内を走行する台車と、台車の機枠上部に固定されている刃物ホルダーに取付けられたビード切削用刃物とからなっており、ビード切削用刃物を管内面のビードに接触させるための油圧シリンダーは、そのロッドが下ロールのシャフト両端部の軸受けに当接するように、管軸方向に直角に２つ並列して設けられ、油圧シリンダーを作動させ機枠を持上げることにより、機枠に固定されている刃物ホルダーに取付けられたビード切削用刃物をビードに接触せしめこれを切断除去する技術が知られている（例えば、特許文献１参照）。   A conventional back bead (hereinafter, the back bead may be simply referred to as a bead) removal processing device is a bead cutting attached to a carriage that runs in an electric sewing tube and a blade holder fixed to the upper part of the machine frame of the carriage. The hydraulic cylinder for bringing the bead cutting blade into contact with the bead on the inner surface of the pipe 2 is perpendicular to the pipe axis direction so that the rod contacts the bearings at both ends of the shaft of the lower roll. A technology is known in which a blade cutting tool attached to a blade holder fixed to the machine frame is brought into contact with the bead and cut and removed by operating a hydraulic cylinder and lifting the machine frame. (For example, refer to Patent Document 1).

特開平１１−３３８１４号公報（第２―３頁、第１図、第２図）Japanese Patent Laid-Open No. 11-33814 (page 2-3, FIGS. 1 and 2)

従来の裏ビード除去加工装置は、鋼管が高温状態の場合に使用され、切削抵抗が大きく、切削速度が遅い、低温状態での使用は困難等の問題があった。   The conventional back bead removal processing apparatus is used when the steel pipe is in a high temperature state, and has problems such as high cutting resistance, low cutting speed, and difficulty in use in a low temperature state.

この発明は、上記のような課題を解決するためになされたもので、主な目的は低温状態での鋼管の裏ビードの除去加工を可能にすることにある。   The present invention has been made in order to solve the above-described problems, and a main object thereof is to make it possible to remove a back bead of a steel pipe at a low temperature.

この発明に係る裏ビード除去加工装置は、電動機と、電動機の動力により回転する回転軸と、回転軸に取り付けられた切削用の刃物と、管状の被加工物の内面に形成された裏ビードの長手方向に移動可能なスライド機構と、長手方向の一端がスライド機構に連結され回転軸を回転自在に支持する固定ケースと、一端がスライド機構に接続され他端側のロッドが固定ケースの長手方向の他端に接続され、作動時にはスライド機構の移動方向とほぼ垂直な方向にロッドを突出させて刃物を被加工物の裏ビードに押し当てるシリンダーと、刃物と所定の距離を保つように固定ケースに取り付けられ、スライド機構の移動に伴い、被加工物の内面を押さえて刃物が被加工物の裏ビードに沿って移動するようにガイドするガイドローラーとを備えたものである。   The back bead removal processing apparatus according to the present invention includes an electric motor, a rotating shaft that is rotated by the power of the electric motor, a cutting blade attached to the rotating shaft, and a back bead formed on the inner surface of the tubular workpiece. A slide mechanism that is movable in the longitudinal direction, a fixed case that is connected to the slide mechanism at one end in the longitudinal direction and rotatably supports the rotating shaft, and a rod at one end that is connected to the slide mechanism and the rod at the other end is the longitudinal direction of the fixed case A cylinder that pushes the rod against the back bead of the work piece by projecting the rod in a direction almost perpendicular to the moving direction of the slide mechanism, and a fixed case that keeps a predetermined distance from the work piece. And a guide roller that guides the cutter to move along the back bead of the workpiece by holding the inner surface of the workpiece as the slide mechanism moves A.

この発明の裏ビード除去加工装置は、電動機の動力によって回転する回転軸に裏ビード切削用の刃物を取付けたので、低温状態での鋼管の裏ビードを除去加工できるという効果を有する。   The back bead removal processing apparatus of the present invention has an effect that the back bead of the steel pipe can be removed and processed at a low temperature because the blade for cutting the back bead is attached to the rotating shaft that is rotated by the power of the electric motor.

この発明の実施の形態１における裏ビード除去加工装置概略を示す断面図である。It is sectional drawing which shows the back bead removal processing apparatus outline in Embodiment 1 of this invention. 図１の裏ビード除去加工装置における刃物とその周辺部位の拡大図である。FIG. 2 is an enlarged view of a blade and its peripheral portion in the back bead removal processing apparatus of FIG. 1. 図１のＡから見た図である。It is the figure seen from A of FIG.

実施の形態１．
図１はこの発明の実施の形態１における裏ビード除去加工装置の概略図であり、図２は図１の裏ビード除去加工装置における刃物とその周辺部位の拡大図であり、図３は図１のＡから見た図である。
図１〜３に示すように、図示しない架台にサーボモーター１２によってほぼ上下方向に移動可能なスライド機構１３が立設されている。このスライド機構１３は、サーボモーター１２と、サーボモーター１２の回転をベルトあるいはプーリ（図示せず）などの減速機構によって減速するとともにその回転運動を直線運動に変換する伝達機構（例えばラックとピニオン）によってほぼ上下方向に伸縮自在に移動する。また、スライド機構１３の上部にはシリンダー５の一端が接続され、シリンダー５の他端側のロッドの先端は固定ハウジング８の上部に設けられた連結部１４に連結されている。また、スライド機構１３のシリンダー５との接続部より下方の部位に固定ハウジング８の下端に設けられた連結部１４'が連結されている。このシリンダー５は刃物１を裏ビード７に接触（押し当てる）させるためのものである。また、この固定ハウジング８はモーター（電動機）１０を回転自在に収納且つ支持しており、その回転軸９は固定ハウジング８の天面から突出している。従って、回転軸９はモーター１０を介して固定ハウジング８によって回転自在に支持されている。この回転軸９はその上部がモーター１０の回転軸とベルト１１を介して接続されており、モーター１０の回転により回転軸９が回転するように構成されている。裏ビード切削用の刃物１は刃物ホルダー２の先端の４角に１個ずつ合計４個（３〜６個でも可）取り付けられている。裏ビード切削用の刃物１を取付けた刃物ホルダー２は、回転軸９に固定されている。従って、モーター１０の回転は回転軸９によって刃物ホルダー２へ伝達され、刃物ホルダー２に取り付けられた刃物１が回転する。また、固定ハウジング８の下端部にフレーム４が固定され、フレーム４には裏ビード７の両脇を走行するように大小２つのガイドローラー３が左右にそれぞれ１組ずつ設置されている。ここで、鋼管６はＣＯ２冷媒を用いた圧縮機の外殻に用いられ、キーホール溶接で突合せ溶接し、裏ビード７を形成させている。 Embodiment 1 FIG.
1 is a schematic diagram of a back bead removal processing apparatus according to Embodiment 1 of the present invention, FIG. 2 is an enlarged view of a blade and its peripheral portion in the back bead removal processing apparatus of FIG. 1, and FIG. It is the figure seen from A.
As shown in FIGS. 1 to 3, a slide mechanism 13 that can be moved substantially vertically by a servo motor 12 is provided on a stand (not shown). The slide mechanism 13 includes a servo motor 12 and a transmission mechanism (for example, a rack and a pinion) that decelerates the rotation of the servo motor 12 by a speed reducing mechanism such as a belt or a pulley (not shown) and converts the rotational motion into a linear motion. To move in an up and down direction. One end of the cylinder 5 is connected to the upper part of the slide mechanism 13, and the tip of the rod on the other end side of the cylinder 5 is connected to a connecting part 14 provided on the upper part of the fixed housing 8. Further, a connecting portion 14 ′ provided at the lower end of the fixed housing 8 is connected to a portion below the connecting portion with the cylinder 5 of the slide mechanism 13. The cylinder 5 is for contacting (pressing) the blade 1 against the back bead 7. The fixed housing 8 accommodates and supports a motor (electric motor) 10 in a rotatable manner, and the rotation shaft 9 protrudes from the top surface of the fixed housing 8. Therefore, the rotating shaft 9 is rotatably supported by the fixed housing 8 via the motor 10. The upper portion of the rotating shaft 9 is connected to the rotating shaft of the motor 10 via the belt 11, and the rotating shaft 9 is configured to rotate by the rotation of the motor 10. A total of four blades 1 for cutting the back bead are attached to four corners at the tip of the blade holder 2 (3 to 6 blades are acceptable). A blade holder 2 to which a blade 1 for back bead cutting is attached is fixed to a rotary shaft 9. Accordingly, the rotation of the motor 10 is transmitted to the blade holder 2 by the rotating shaft 9, and the blade 1 attached to the blade holder 2 rotates. The frame 4 is fixed to the lower end portion of the fixed housing 8, and two sets of large and small guide rollers 3 are installed on the left and right sides of the frame 4 so as to run on both sides of the back bead 7. Here, the steel pipe 6 is used as an outer shell of a compressor using a CO 2 refrigerant, and is butt welded by keyhole welding to form a back bead 7.

次に、本実施の形態１の動作について図１〜３を用いて説明する。
ユーザーのスイッチ操作によりワーク検知後時間が予め設定されたタイマー設定値を経過したことにより自動的にモーター１０に電源が供給されてモーター１０が回転すると、モーター１０の回転はモーター１０の回転軸からベルト１１を介して、回転軸９へと伝達される。回転軸９の回転は裏ビード切削用刃物１を取付けた刃物ホルダー２へと伝達され、刃物ホルダー２が回転する。従って、裏ビード切削用の刃物１も回転する。
次に、刃物ホルダー２が回転している状態で、上記のスイッチ操作によりサーボモーター１２に電源が供給され、サーボモーター１２が回転すると、サーボモーター１２の回転が図示しない減速機構によって減速され、さらに減速された回転運動を直線運動に変換する伝達機構によってスライド機構１３が下降し、これに伴い、スライド機構に連結された固定ハウジング８、及び固定ハウジング８に上下方向が固定された回転軸９および回転軸９に固定された刃物ホルダー２も同じように下降する。 Next, the operation of the first embodiment will be described with reference to FIGS.
When the time set after the workpiece detection by the user's switch operation has passed a preset timer setting value, when the motor 10 is automatically supplied with power and the motor 10 rotates, the rotation of the motor 10 starts from the rotation axis of the motor 10. It is transmitted to the rotary shaft 9 via the belt 11. The rotation of the rotary shaft 9 is transmitted to the blade holder 2 to which the back bead cutting blade 1 is attached, and the blade holder 2 rotates. Accordingly, the back bead cutting blade 1 also rotates.
Next, when the blade holder 2 is rotating, power is supplied to the servo motor 12 by the above switch operation. When the servo motor 12 rotates, the rotation of the servo motor 12 is decelerated by a reduction mechanism (not shown), and The slide mechanism 13 is lowered by the transmission mechanism that converts the decelerated rotational motion into linear motion. Along with this, the fixed housing 8 connected to the slide mechanism, and the rotary shaft 9 fixed in the vertical direction to the fixed housing 8 and The blade holder 2 fixed to the rotating shaft 9 is also lowered in the same manner.

さらに、被加工物である縦継溶接鋼管を架台（図示せず）の上に立てた状態（すなわち、裏ビードがほぼ上下方向になるような状態）で載置し、シリンダー５を作動させると、シリンダー５のロッドがほぼ水平方向に突出するので、固定ハウジング８は連結部１４'を回転支点としてスライド機構１３から離間するようにほぼ上下方向に回転し刃物１が縦継溶接鋼管の裏ビード７に当接するとそこで傾斜した状態で回転を停止する。このとき、ガイドローラー３は裏ビード７の両脇に押付けられた状態になる。
このように刃物１を裏ビード７に接触させるとともに、ガイドローラー３を裏ビード７の両脇に押付けながらスライド機構１３の下降動作により下方に（即ち、裏ビードに沿って）走行させることで、鋼管６の裏ビード７の除去加工が行われる。
なお、ガイドローラー３と刃物１との距離を変えて切削深さを調整することで、所望の切削深さを得ることができる。この調整については、ユーザーがガイドローラー３を別の径のガイドローラーに切り替えるかあるいは、ガイドローラー３のフレーム４への取付け位置あるいはフレーム４の固定ハウジング８への取付け位置をハンドルを回すなどして簡単に加減できるように調整機構を設けることでも実現できる。 Furthermore, when the cascade welded steel pipe, which is a workpiece, is placed on a gantry (not shown) (that is, the back bead is substantially in the vertical direction) and the cylinder 5 is operated. Since the rod of the cylinder 5 protrudes in a substantially horizontal direction, the fixed housing 8 rotates substantially vertically so as to be separated from the slide mechanism 13 with the connecting portion 14 'as a rotation fulcrum, and the cutter 1 is the back bead of the longitudinally welded steel pipe. When it comes into contact with 7, the rotation is stopped in an inclined state. At this time, the guide roller 3 is pressed against both sides of the back bead 7.
In this way, the blade 1 is brought into contact with the back bead 7 and is moved downward (that is, along the back bead) by the lowering operation of the slide mechanism 13 while pressing the guide roller 3 on both sides of the back bead 7. Removal processing of the back bead 7 of the steel pipe 6 is performed.
In addition, a desired cutting depth can be obtained by changing the distance between the guide roller 3 and the blade 1 to adjust the cutting depth. For this adjustment, the user switches the guide roller 3 to a guide roller of a different diameter, or turns the handle so that the guide roller 3 is attached to the frame 4 or the frame 4 is attached to the fixed housing 8. It can also be realized by providing an adjusting mechanism so that it can be easily adjusted.

この発明によれば、突合せ溶接による鋼管の製造時に形成される裏ビードを除去加工する際に、回転軸に裏ビード切削用刃物を取付けた刃物ホルダーを固定しているので、低温状態での鋼管の裏ビードを除去加工することができる。   According to this invention, when removing the back bead formed at the time of manufacturing the steel pipe by butt welding, the blade holder having the back bead cutting blade attached to the rotating shaft is fixed, so the steel pipe in a low temperature state is fixed. The back bead can be removed and processed.

なお、固定ハウジング８とフレーム４を合わせて固定フレームと呼ぶ。
また、上記の例では、モーター１０を固定ハウジング８内に収納させる例について説明したが、このモーター１０を固定ハウジング８の外部に設けることも可能である。 The fixed housing 8 and the frame 4 are collectively referred to as a fixed frame.
In the above example, the example in which the motor 10 is housed in the fixed housing 8 has been described. However, the motor 10 may be provided outside the fixed housing 8.

また、上記の例では、サーボモーター１２の回転をベルトあるいはプーリー（図示せず）などの減速機構によって減速するとともに、その回転運動を直線運動に変換する伝達機構（例えばラックとピニオン）によってほぼ上下方向に伸縮自在に移動する例について説明したが、サーボモーター１２の回転をフィードバック制御によって減速するとともに、その回転運動をボールネジによって直線運動に変換する伝達機構による直線運動でも可能である。   In the above example, the rotation of the servo motor 12 is decelerated by a speed reduction mechanism such as a belt or a pulley (not shown), and the transmission mechanism (for example, a rack and a pinion) that converts the rotation motion into a linear motion is almost vertically moved. Although an example of moving in a direction that can be expanded and contracted has been described, linear movement by a transmission mechanism that decelerates rotation of the servo motor 12 by feedback control and converts the rotational movement into linear movement by a ball screw is also possible.

本裏ビード除去加工装置によって裏ビードを除去加工された鋼管を用いて圧縮機が構成される。   The compressor is configured by using the steel pipe from which the back bead has been removed by the back bead removing device.

１ 刃物、２ 刃物ホルダー、３ ガイドローラー、４ フレーム、５ シリンダー、６ 鋼管、７ 裏ビード、８ 固定ハウジング、９ 回転軸、１０ モーター、１１ ベルト、１２ サーボモーター、１３ スライド機構、１４ 連結部、１４' 連結部、１５ 回転方向、１６ 上下方向。   1 Blade, 2 Blade holder, 3 Guide roller, 4 Frame, 5 Cylinder, 6 Steel pipe, 7 Back bead, 8 Fixed housing, 9 Rotating shaft, 10 Motor, 11 Belt, 12 Servo motor, 13 Slide mechanism, 14 Connecting part, 14 'connection part, 15 rotation direction, 16 up-down direction.

Claims (4)

電動機と、
この電動機の動力により回転する回転軸と、
この回転軸に取り付けられた切削用の刃物と、
管状の被加工物の内面に形成された裏ビードの長手方向に移動可能なスライド機構と、
長手方向の一端が前記スライド機構に連結され前記回転軸を回転自在に支持する固定ケースと、
一端が前記スライド機構に接続され、他端側のロッドが前記固定ケースの長手方向の他端に接続され、作動時には前記スライド機構の移動方向とほぼ垂直な方向に前記ロッドを突出させて前記刃物を前記被加工物の裏ビードに押し当てるシリンダーと、
前記刃物と所定の距離を保つように前記固定ケースに取り付けられ、前記スライド機構の移動に伴い、前記被加工物の内面を押さえて前記刃物が前記被加工物の裏ビードに沿って移動するようにガイドするガイドローラーと、を備えたことを特徴とする裏ビード除去加工装置。 An electric motor,
A rotating shaft that is rotated by the power of the electric motor;
A cutting tool attached to the rotating shaft,
A slide mechanism movable in the longitudinal direction of the back bead formed on the inner surface of the tubular workpiece;
A fixed case having one end in the longitudinal direction connected to the slide mechanism and rotatably supporting the rotating shaft;
One end is connected to the slide mechanism, the other end side rod is connected to the other end in the longitudinal direction of the fixed case, and the rod is projected in a direction substantially perpendicular to the moving direction of the slide mechanism during operation. A cylinder that presses against the back bead of the workpiece;
It is attached to the fixed case so as to keep a predetermined distance from the cutter, and the cutter moves along the back bead of the workpiece while pressing the inner surface of the workpiece as the slide mechanism moves. A back bead removal processing device comprising a guide roller for guiding the back bead. 前記ガイドローラーと前記刃物との距離を変えて切削深さを調節することを特徴とする請求項１記載の裏ビード除去加工装置。   The back bead removal processing apparatus according to claim 1, wherein a cutting depth is adjusted by changing a distance between the guide roller and the blade. 前記被加工物は鋼管であることを特徴とする請求項１または請求項２に記載の裏ビード除去加工装置。   The back bead removal processing apparatus according to claim 1, wherein the workpiece is a steel pipe. 請求項１〜３のいずれかに記載の裏ビード除去加工装置によって裏ビード除去加工された被加工物を用いたことを特徴とする圧縮機。   A compressor using a workpiece that has been subjected to back bead removal processing by the back bead removal processing device according to claim 1.
JP2009005376A 2009-01-14 2009-01-14 Back bead removal processing apparatus and compressor Expired - Fee Related JP5361402B2 (en)

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WO2015031118A1 (en) * 2013-08-29 2015-03-05 Eaton Corporation Bearing pin upset method to retain high hardness pins
KR101513996B1 (en) * 2014-10-21 2015-04-21 건일스틸 주식회사 Steel Pipe Inner Surface Machining Apparatus and Processing Method
KR20150112258A (en) * 2014-03-27 2015-10-07 이광수 Hot water mat manufacturing apparatus and hot water boilier mat manufactured using the same
KR102296242B1 (en) * 2021-04-14 2021-09-01 한전케이피에스 주식회사 Apparatus for machining a welded joint of pernetaration nozzzle of reactor pressure vessel
JPWO2020261548A1 (en) * 2019-06-28 2021-09-13 ダイコク工業株式会社 Welding bead cutting equipment
CN114192892A (en) * 2021-12-31 2022-03-18 贵州祥宇磷化工特种装备制造有限公司 Cutting device is used in tetrafluoro grid production and processing
CN114653999A (en) * 2022-04-08 2022-06-24 安徽达必立新能源科技有限公司 Slope opening device before rolling, manufacturing and welding of wind power generation tower cylinder
JP7251741B1 (en) 2021-10-01 2023-04-04 株式会社クロイツ chamfer tool

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015031118A1 (en) * 2013-08-29 2015-03-05 Eaton Corporation Bearing pin upset method to retain high hardness pins
US10369620B2 (en) 2013-08-29 2019-08-06 Eaton Corporation Bearing pin upset method to retain high hardness pins
KR20150112258A (en) * 2014-03-27 2015-10-07 이광수 Hot water mat manufacturing apparatus and hot water boilier mat manufactured using the same
KR101580573B1 (en) * 2014-03-27 2015-12-28 이광수 Hot water mat manufacturing apparatus and hot water boilier mat manufactured using the same
KR101513996B1 (en) * 2014-10-21 2015-04-21 건일스틸 주식회사 Steel Pipe Inner Surface Machining Apparatus and Processing Method
JPWO2020261548A1 (en) * 2019-06-28 2021-09-13 ダイコク工業株式会社 Welding bead cutting equipment
KR102296242B1 (en) * 2021-04-14 2021-09-01 한전케이피에스 주식회사 Apparatus for machining a welded joint of pernetaration nozzzle of reactor pressure vessel
JP7251741B1 (en) 2021-10-01 2023-04-04 株式会社クロイツ chamfer tool
JP2023053448A (en) * 2021-10-01 2023-04-13 株式会社クロイツ Chamfering tool
CN114192892A (en) * 2021-12-31 2022-03-18 贵州祥宇磷化工特种装备制造有限公司 Cutting device is used in tetrafluoro grid production and processing
CN114653999A (en) * 2022-04-08 2022-06-24 安徽达必立新能源科技有限公司 Slope opening device before rolling, manufacturing and welding of wind power generation tower cylinder
CN114653999B (en) * 2022-04-08 2024-01-30 安徽达必立新能源科技有限公司 Wind power generation tower drum rolling and welding front slope opening device

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