JPS58143908A - Bead cutter of welded tube - Google Patents
Bead cutter of welded tubeInfo
- Publication number
- JPS58143908A JPS58143908A JP2786782A JP2786782A JPS58143908A JP S58143908 A JPS58143908 A JP S58143908A JP 2786782 A JP2786782 A JP 2786782A JP 2786782 A JP2786782 A JP 2786782A JP S58143908 A JPS58143908 A JP S58143908A
- Authority
- JP
- Japan
- Prior art keywords
- bead
- cutting tool
- cutting
- cutter
- tool
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
- B23C3/122—Trimming or finishing edges, e.g. deburring welded corners of pipes or cylinders
- B23C3/124—Trimming or finishing edges, e.g. deburring welded corners of pipes or cylinders internally
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
- Milling Processes (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は電縫管等の溶接管のビード切削装置に関する。[Detailed description of the invention] The present invention relates to a bead cutting device for welded pipes such as electric resistance welded pipes.
所定の温度まで全体的に加熱さｎた帯鋼を電縫溶接する
、いわゆる熱間電気抵抗溶接法自体は知らｎている０し
かし、最大の問題である内面ビードの処理法が確立さｎ
ていないため、実稼動していないのが現状である。There is no knowledge of the so-called hot electric resistance welding method, in which steel strips are electrically welded after being entirely heated to a predetermined temperature.However, the treatment method for the inner bead, which is the biggest problem, has not yet been established.
Currently, it is not in actual operation.
一方、電縫管の製造ラインで、冷間で内面ビードを固定
したバイトにより切削することは行なわ汎でいるが、こ
の冷間の場合でさえもバイトの寿命はせいぜい約１時開
栓度である。こ扛が熱間で内面ビードの切削を行うと、
バイトの寿命は著しく短い。On the other hand, in the production line of ERW pipes, it is common practice to cut with a cutting tool that has the internal bead fixed in the cold, but even in this cold cutting, the life of the tool is at most about 1 hour after opening. be. When the knife cuts the inner bead while hot,
The lifespan of a bite is extremely short.
また冷間での内面ビード切削では、冷間ライン上である
ためバイト替えのための停機による損失は比較的少い。In addition, in cold internal bead cutting, losses due to machine stoppages for tool changes are relatively small because the process is performed on a cold line.
こｎに対して、熱間電縫管製造法を採る場合、バイトの
交換が頻繁であると、停機による損失が冷間による場合
に比較して著しく太きい。すなわち、熱間電縫管製造法
にあっては、帯鋼をその全体加熱のためのガス、油等を
燃料とする雰囲気加熱炉を通し、帯鋼を所定温度にかつ
均一に加熱するが、かかる温度制御のためには少くとも
加熱炉内での帯鋼速度等が一定でなけｎばならない。も
し、バイト替えのために製造ラインを停機するとすｎば
、停機後の再スタート時において帯鋼が所定温度にかつ
均一に加熱される１で相当な時間を要し燃料使用数等の
点から経済的でないばかりでなく、炉内雰囲気温度の再
制御の困難性に伴って再スタート時から炉内雰囲気温度
が安定するまで不良品の発生率が高まる。この意味で、
熱間電縫管製造法を確立する際には、バイトの長寿命化
が必須の要件となってい乙。On the other hand, when the hot electric resistance welded pipe manufacturing method is adopted, if the tool bit is replaced frequently, the loss due to machine stoppage is significantly greater than when it is caused by cold work. That is, in the hot electric resistance welded pipe manufacturing method, the steel strip is heated uniformly to a predetermined temperature by passing it through an atmospheric heating furnace that uses gas, oil, etc. as fuel to heat the entire steel strip. For such temperature control, at least the speed of the strip in the heating furnace must be constant. If the production line were to be stopped to change parts, it would take a considerable amount of time to uniformly heat the steel strip to the specified temperature when restarting after the stop, and this would reduce fuel usage. Not only is this method uneconomical, but it is also difficult to re-control the furnace atmosphere temperature, which increases the incidence of defective products from the time of restart until the furnace atmosphere temperature stabilizes. In this sense,
When establishing a hot electric resistance welded pipe manufacturing method, a long life of the cutting tool is an essential requirement.
本発明はこのような要請に適確に答えたもので、その目
的は切削バイトの寿命が延長し、もって停機による損失
を著しく低減化できる溶接管のビード切削装置を提供す
ることにある。The present invention appropriately meets these demands, and its purpose is to provide a bead cutting device for welded pipes that can extend the life of the cutting tool and thereby significantly reduce losses due to machine stoppages.
本発明の基本的な思想は次の点にある。第１に、バイト
の長寿命化には、バイトの摩耗を低減することが必要で
あり、そのためには一つのバイトに負担をかけたり、バ
イトの一部に負担をかけることは絶対避けるべきである
との観点から、バイトを円盤状とした点である。すなわ
ち、円盤状バイトであると、周方向の負担が均一となる
ので、バイトの寿命が長くなる。The basic idea of the present invention is as follows. First, in order to extend the life of the tool, it is necessary to reduce wear on the tool, and for this purpose, it is absolutely necessary to avoid putting stress on one tool or part of the tool. From this point of view, the point is that the cutting tool is made into a disk shape. In other words, if the tool is a disc-shaped cutting tool, the load in the circumferential direction is uniform, so the tool life is extended.
第２に、前述のように従来電縫管製造の際、冷間で九コ
マバイトヲ固定しながら切削する方法は知ら扛ているが
、その種のものではバイトの温度上昇が激しく、結局寿
命が短かくなる点に着目し、本発明では前述のようにバ
イトを円盤状とするとともに、その円盤状バイトを常時
回転することによって、ビードとの接触を極く短時間と
なし、再び接触する１での時間内においてバイトを冷却
するようにしたものである。Second, as mentioned above, when manufacturing electric resistance welded pipes, there is a well-known method in which a nine-frame tool is fixed and cut in the cold, but with that type of tool, the temperature of the tool increases rapidly, resulting in a shortened lifespan. Focusing on this point, in the present invention, as mentioned above, the cutting tool is made into a disk shape, and by constantly rotating the disk-shaped cutting tool, contact with the bead is made for a very short time, and it is possible to make contact with the bead again. The cutting tool is cooled down within a time period of .
第３に、バイトに回転力を与える場合、外部カラマンド
レル、インピーダを通してホルダーへ回転力を伝達する
ことは、対象鋼管が小サイズであることも相俟って、至
難の技であることに対処するために、本発明においては
、鋼管の長手方向の移送力に着目し、ビードの移動にバ
イトを従動回転させるようにしたのである。Thirdly, when applying rotational force to the cutting tool, transmitting the rotational force to the holder through the external calamandrel and impeder is extremely difficult due to the small size of the target steel pipe. In order to achieve this, in the present invention, attention is paid to the transfer force in the longitudinal direction of the steel pipe, and the cutting tool is rotated as a result of the movement of the bead.
以下本発明を図面に示す具体例によって説明すると、第
１図に熱間電縫鋼管製造ラインの一部を示した。■は雰
囲気加熱炉で、この加熱炉１内に帯鋼２Ａが連続的に通
さｎ１所定温度、通常８５０℃以上にかつ均一に加熱さ
扛た後抽出さ扛る。加熱さ扛た帯鋼２Ａは左右のフォー
ミングロール３により下部に工、ジ対向部を有する鋼管
２Ｂが成形さｎる。その後この鋼管２Ｂは、フィンロー
ル４を通り、その際エツジ面の（３＋
角度コントロール、仕上成形およびセンタリングがなさ
ｎる。次いで鋼管２Ｂに対して溶接が行なわｎる。溶接
は、たとえば誘導方民の高周波溶接法が採用さｎ、溶接
点Ｑの直前に配置したワークコイル５に高周波電流を通
し、鋼管２Ｂに加熱電流を誘起させ両エツジを昇温加熱
させる０６はスクイズロールで、こ扛により対向側エツ
ジが圧溶接さｎると共に、アプセット量およびエツジの
突合せ形状がコントロールさｎる。The present invention will be described below with reference to specific examples shown in the drawings. FIG. 1 shows a part of a hot electric resistance welded steel pipe manufacturing line. (2) is an atmospheric heating furnace, and the steel strip 2A is continuously passed through the heating furnace 1, heated uniformly to a predetermined temperature (usually 850° C. or higher), and then extracted and rolled. The heated and rolled steel strip 2A is formed into a steel pipe 2B having a facing portion at the bottom by left and right forming rolls 3. This steel pipe 2B then passes through a fin roll 4, during which the edge surface (3+) angle control, finish forming and centering are performed.Then, the steel pipe 2B is welded. A high-frequency welding method is adopted, in which a high-frequency current is passed through the work coil 5 placed just before the welding point Q, and a heating current is induced in the steel pipe 2B to heat both edges. As the opposing edges are pressure welded, the amount of upset and the butt shape of the edges are controlled.
その後溶接が完了した鋼管２Ｃに対して、その外面ビー
ドＢｏが外面ビードカッター７により除去さｎる。さら
にその下流側には絞りロール８・・・・が配さｎており
、その下流位置で内面ビードＢｉが切削除去さｎる。Thereafter, the outer bead Bo of the welded steel pipe 2C is removed by an outer bead cutter 7. Furthermore, a squeezing roll 8 is disposed on the downstream side thereof, and the inner bead Bi is cut and removed at the downstream position.
このような熱間電縫管製造法では、内面ビードＢｉの存
在が問題となり、溶接直後の段階でオンラインで長時間
安定した連続切削が可能な内面ビード切削装置が望−１
ｎでいた。この要望に対応するのが図示のビード切削装
置であ乙。In such a hot electric resistance welded pipe manufacturing method, the presence of the inner bead Bi poses a problem, and it is desirable to have an inner bead cutting device that can perform online stable continuous cutting for a long time immediately after welding.
I was n. The bead cutting device shown in the figure meets this request.
このビード切削装置は、従来の丸コマバイト（４）
に代って円盤状切削バイト１０を備えているところに一
つの特色を有している０このバイト１０は、上流側に設
けらｎた基台１１に支承さｎ１鋼管２Ｂ内に挿入さ汎た
マンドレル１２Ａおよびインピーダ１２Ｂに連結さｎた
バイトホルダー１３の先端に支持さ扛ている０他方、ホ
ルダー１３の下部にはライン方向に間隔を置いてビード
Ｂｉを跨ぐ溝付きローラー１４．１４が取付けらｎ、そ
扛らの間の位置において張りローラー１５がホルダー１
３の上部位置に配さｎている。この張りローラー１５は
、支点１６を中心として回動自在のレバー１７の中央部
に軸承さｎている。捷たレバー１７の先端はＬ字状爪片
１８により受けている。爪片１８は、その中央部におい
てホルダー１３に取付けらｎたピン１９に枢着さｎてい
る。爪片１８の他端は基台１１部位まで延在する操作Ｏ
ｙド２０と連結さｎている。操作ロッド２０の他端は、
下部が枢着点２１となった揺動レバー２２と連結さ扛、
揺動レバー２２の中間部と基台との間にはたとえげ油圧
の操作７リンダ２３が設けら扛ている。One feature of this bead cutting device is that it is equipped with a disc-shaped cutting tool 10 instead of the conventional round piece cutting tool (4). A mandrel 12A supported on a base 11 and inserted into a steel pipe 2B is supported at the tip of a cutting tool holder 13 connected to an impeder 12B.On the other hand, at the bottom of the holder 13, there are holes spaced apart in the line direction. A grooved roller 14.14 is attached to straddle the bead Bi, and a tension roller 15 is attached to the holder 1 at a position between them.
It is placed in the upper position of 3. The tension roller 15 is supported in the center of a lever 17 which is rotatable about a fulcrum 16. The tip of the twisted lever 17 is received by an L-shaped claw piece 18. The claw piece 18 is pivotally attached to a pin 19 attached to the holder 13 at its center. The other end of the claw piece 18 is an operation O that extends to the base 11 part.
Y is connected to 20. The other end of the operating rod 20 is
The lever is connected to a swinging lever 22 whose lower part is a pivot point 21,
A hydraulic operation cylinder 23 is provided between the intermediate portion of the swing lever 22 and the base.
２４はビード切削装置の鋼管２Ｂ、２Ｃ内挿入部分を冷
却するための冷却水送給路である。Reference numeral 24 denotes a cooling water supply path for cooling the portion inserted into the steel pipes 2B and 2C of the bead cutting device.
かくして、いまシリンダ２３０ロツドを伸長させると、
操作口、ド２０が第１図右方へ移動するため、爪片１８
がピン１９の周りに時計方向に回転するため、レバー１
７は支点１６を中心として反時計方向に回転する。その
結果、張りローラー１５が鋼管２Ｃの上向面に圧接さ扛
、そのとき逆に溝付きローラー１４．１４が鋼管２Ｃの
上向面に圧接さｎる。したがって、ホルダー１３は鋼管
２Ｃの中心に正確にかつ強固に設置さ扛る。また後述す
るように、バイト１０の切削反力がホルダー１３にかか
るため、こｎを受けてホルダー１３を所定位置に保持す
るよう、第２図に示すように、ホルダー１３の側部にサ
イドガイドシー−２５、２””５が設けらｎている。Thus, if we now extend the cylinder 230 rod,
Since the operating port 20 moves to the right in Figure 1, the claw piece 18
rotates clockwise around pin 19, so lever 1
7 rotates counterclockwise around the fulcrum 16. As a result, the tension roller 15 is pressed against the upper surface of the steel pipe 2C, and at this time, the grooved rollers 14, 14 are conversely pressed against the upper surface of the steel pipe 2C. Therefore, the holder 13 is accurately and firmly installed in the center of the steel pipe 2C. Furthermore, as will be described later, since the cutting reaction force of the cutting tool 10 is applied to the holder 13, in order to receive this force and hold the holder 13 in a predetermined position, as shown in FIG. Sea-25, 2""5 is provided.
次にパイ）１０およびその取付構造の詳細を第３図にも
とづいて説明すると、円盤状切削バイト１０は、ホルダ
ー１３の先端部に形成した耐熱グリース封入ボックス型
取付座部１３ａに基端部がニードルベアリング２６およ
びスラストベアリング２９をもって回転自庄に軸承さ扛
た回転軸２７の先端に固定ナツト２８をもって取付けら
ｎている。なお同図中３０は回転軸２７をホルダー１３
に固定するためのキャップであり、３１はスラスト力を
受承するフランジであ乙。さらに切削バイト１０はその
軸線０が鋼管２Ｃの軸心Ｘに対して、軸線Ｏを通る立面
上で角度αをもって下向きに、かつ水平面上でビード流
ｎ方向に対してスキュー角θ（第２図参照）をもって、
傾斜配置さｎている。Next, the details of the pi) 10 and its mounting structure will be explained based on FIG. A fixing nut 28 is attached to the tip of a rotating shaft 27 which is supported on a rotating shaft with a needle bearing 26 and a thrust bearing 29. In addition, 30 in the same figure holds the rotating shaft 27 in the holder 13.
31 is a flange for receiving thrust force. Further, the cutting tool 10 has its axis 0 facing downward at an angle α on the vertical plane passing through the axis O with respect to the axis X of the steel pipe 2C, and at a skew angle θ (second (see figure),
It is arranged at an angle.
なお、バイト１０の取付構造は第８図のような構成とす
ることもできる。同図において、同部材は同符号で示し
た。Note that the mounting structure of the cutting tool 10 can also be configured as shown in FIG. In the figure, the same members are indicated by the same symbols.
このような切削バイト１０の取付態様とすると、鋼管の
連続的な移送に伴って、切削バイト１０が従回転し内面
ビードＢｉを連続的に切削する。すなわち、い１第４図
および第５図のように、切削バイト１０が鋼管２Ｃの内
面ＫＦなる押付力をもって半径方向に押付けらねており
、またビード切削時の抵抗（ビード進行方向について）
がＰである場合を考えてみると、バイトのスラスト力は
ｐ ｃｏｓθ、バイトの回転力はＰｓｉｎθである。そ
してバイトが回転する時働く摩擦抵抗はμＦである。し
たがって、
Ｐ ｓｉｎθ〉μＦ
なる条件とすると、切削バイト１０が内面ビードＢ１の
移動に伴って自転し逆に内面ビーＦＢｉを切削除去する
。When the cutting tool 10 is installed in this manner, the cutting tool 10 rotates as the steel pipe is continuously transferred and continuously cuts the inner bead Bi. That is, as shown in Figs. 4 and 5, the cutting tool 10 presses the inner surface of the steel pipe 2C in the radial direction with a pressing force KF, and the resistance during bead cutting (with respect to the bead traveling direction)
Considering the case where is P, the thrust force of the cutting tool is p cos θ, and the rotational force of the cutting tool is P sin θ. The frictional resistance that acts when the cutting tool rotates is μF. Therefore, under the condition that P sin θ>μF, the cutting tool 10 rotates as the inner bead B1 moves and conversely cuts and removes the inner bead FBi.
前述のように、一般に小径の鋼管を対象とする場合には
、外部の回転駆動力を切削、；イト、伝えることはスペ
ース上などの点で著しく困難であるが、上記例のように
外部から回転駆動力を与えることなく、内面ビードＢ１
の流ｎに切削バイトを従回転するようにすｎば、小径の
鋼管であってもその内面ビードをシンプルな構造の切削
装置で容易に切削除去できる。As mentioned above, when dealing with small-diameter steel pipes, it is generally extremely difficult to cut or transmit external rotational driving force due to space constraints, but as in the example above, it is extremely difficult to cut or transmit external rotational driving force. inner bead B1 without applying rotational driving force.
By rotating the cutting tool in the following manner, the inner bead of even a small-diameter steel pipe can be easily removed by cutting with a simple-structured cutting device.
また切削バイトを従来の丸コマバイトに代え（８）
て円盤状切削バイト１０としたので、切削後ビードから
離ｎるから、再びビードに当るまでの間、当該部位が冷
却さ扛、熱間で連続的に内面ビードを切削する場合であ
っても、熱によるバイト寿命の低下がない。また円盤状
切削バイトであると、切削抵抗は均一にかかり、丸コマ
バイトにおいてみらｎるトップ面のみが摩耗したり、一
部のバイトのみの摩耗量が大きくなり、結局寿命低下を
招くことがなく、寿命が著しく向上する。In addition, the cutting tool has been replaced with a conventional round piece tool (8) and a disc-shaped cutting tool 10 has been used, so that the part concerned is cooled and heated during the period from when it separates from the bead after cutting until it hits the bead again. Even when cutting the inner bead continuously, there is no reduction in tool life due to heat. In addition, if it is a disc-shaped cutting tool, the cutting force will be applied uniformly, which may cause wear on only the top surface of a round piece tool, or increase the amount of wear on only some of the tools, resulting in a shortened life. The lifespan is significantly improved.
ところで、通常上記角度αは５〜１５度特に約１０度が
望ましい。またスキュー角θは、１０〜４５度特に２０
〜３０度が望ましい。スキュー角θが小さい場合には、
回転数が低下しベアリングの寿命上野ましいのであるが
、あまり小さいと切削バイトが自転しないこともある。Incidentally, the above-mentioned angle α is usually preferably 5 to 15 degrees, particularly about 10 degrees. In addition, the skew angle θ is 10 to 45 degrees, especially 20 degrees.
~30 degrees is desirable. When the skew angle θ is small,
This will reduce the rotational speed and shorten the life of the bearing, but if it is too small, the cutting tool may not rotate.
スキュー角θが大きいと、バイトの回転数が高くなり、
バイトの冷却時間が十分とｎず、バイト寿命上望ましく
ないばかりでなく、切削中が狭くなり、ビード部へのセ
ツティングが難しくなる問題点を招く。さら（ｃバイト
１０は、截頭円錐形として逃げ角β（第３図参照）を取
ることが望しく、通常逃げ角βは１〜６度、好適には約
３度とさ扛る。バイト１０の大径側半径γは、管内半径
Ｒの０６〜０．８倍、特に０．６〜０７倍が好ましい。When the skew angle θ is large, the rotation speed of the cutting tool increases,
The cooling time of the cutting tool is not sufficient, which is not only undesirable in terms of the tool's life, but also causes the problem that the cutting area becomes narrow and it becomes difficult to set the cutting tool to the bead portion. Furthermore, it is desirable that the cutting tool 10 has a truncated conical shape with a clearance angle β (see Fig. 3), and the clearance angle β is usually 1 to 6 degrees, preferably about 3 degrees. The large diameter side radius γ of No. 10 is preferably 0.6 to 0.8 times, particularly 0.6 to 0.7 times, the pipe inner radius R.
他方、ホルダーの鋼管内へ保持態様としては、第６図の
ように、バネまたはシリンダ内蔵のシュー５０およびロ
ーラ５１を用いるいわゆるシー−タイプのものや、第７
図のように支点６０、ローラ６１およびマンドレルの基
端に連結さｎたシリンダ６２を用いたいわゆる天秤タイ
プのものも使用できる。On the other hand, as shown in FIG. 6, the holder can be held in the steel pipe by a so-called sea type using a shoe 50 and a roller 51 with a built-in spring or cylinder, or by a
A so-called balance type device using a fulcrum 60, a roller 61, and a cylinder 62 connected to the proximal end of the mandrel as shown in the figure can also be used.
なお、上記説明は内面ビードの切削除去の場合について
行ったが、外面ビードの切削除去の場合にもわずかなバ
イト保持機構の変形で本発明を適用できる〇
一方、本発明者は、本発明装置と従来装置との切削バイ
トの寿命試験を行ったところ次のような結果が得らｎた
。試験に供した本発明装置は図面に示すもので、条件は
次の通りである。Although the above explanation was made regarding the case of cutting and removing the inner bead, the present invention can also be applied to the case of cutting and removing the outer bead with a slight modification of the tool holding mechanism. A life test of the cutting tool of the device and the conventional device was conducted, and the following results were obtained. The device of the present invention used for the test is shown in the drawing, and the conditions are as follows.
（イ）帯鋼サイズ：２６０ｍｍ巾Ｘ ３．５ ｍｍ厚（
ロ）鋼管サイズ：内面ビード切削位置での内径＝７７關
φ、レジユース後の
仕上り外径−４２，７ｍｍφ
（ハ）材 質： ５ＧＰ
（ホ）製管条件：帯鋼加熱温度−８５０℃溶接部温度−
１４５０°Ｃ
従来装置は丸コマバイトを固定したものである０
この結果からも、著しく切削バイト寿命が向上すること
が判明する。(a) Steel band size: 260mm width x 3.5mm thickness (
B) Steel pipe size: Inner diameter at inner bead cutting position = 77mmφ, finished outer diameter after reuse -42.7mmφ (c) Material: 5GP (e) Pipe manufacturing conditions: Strip heating temperature -850℃ welded part Temperature -
1450°C The conventional device has a fixed round cutting tool.0 This result also shows that the life of the cutting tool is significantly improved.
以上の通り、本発明によｎば、切削バイト寿命が格段と
長くなシ、バイト替えに伴う停機を著しく減少できる。As described above, according to the present invention, the life of the cutting tool is significantly longer, and the number of machine stops due to tool replacement can be significantly reduced.
また切削バイトは自転するようにしたので、切削装置が
シンプルなものとなり、小径サイズの鋼管であっても確
実に切削できる。Furthermore, since the cutting tool is designed to rotate, the cutting device becomes simple and can reliably cut even small-diameter steel pipes.
第１図は本発明装置の製造ラインへの設置例を示す一部
断面で示した全体図、第２図は本発明装置の要部平面図
、第３図は一部破断圧面図、第４図はビード切削時の抵
抗力およびその分力を示す説明図、第５図はバイトの鋼
管内面への押付力の説明図、第６図および第７図はホル
ダーの態様を異にする保持例の概要図、第８図はバイト
の取付構造の他の例を示す一部破断圧面図である。
１・・加熱炉 ２Ａ・・帯鋼
２Ｂ、 ２Ｃ・・鋼管 ５・・ワークコイル７・
・外面ビードカッター
１０・・円盤状切削バイト
１２Ａ・・マンドレル １２Ｂ・・インヒータ１３・
・ホルダー ２６．２９・・ベアリングθ・・ス
キー−角度
特許出願人 住友金属工業株式会社代理人弁理士
永 井 義 久とし
第６図
手続補正書
昭和５７年３月８日
特許庁長官島田春樹 殿 。
曹ド中井 肩上 」韓工彊←
当２、発明の名称 溶接管のビード切削
装置３ 補正をする者
事件との関係 特許出願人
４、 代 理 人 〒１３６
６、 補正により増加する発明の数
７、補正の対象
図面
８、補正の内容Fig. 1 is an overall view with a partial cross section showing an example of installation of the device of the present invention in a production line, Fig. 2 is a plan view of the main parts of the device of the present invention, Fig. 3 is a partially broken pressure surface view, and Fig. 4 is a partial cross-sectional view of the device of the present invention. The figure is an explanatory diagram showing the resistance force and its component force during bead cutting. Figure 5 is an explanatory diagram of the pressing force of the cutting tool against the inner surface of the steel pipe. Figures 6 and 7 are examples of holding with different holder configurations. FIG. 8 is a partially broken pressure surface view showing another example of the mounting structure of the cutting tool. 1.Heating furnace 2A..Strip steel 2B, 2C..Steel pipe 5..Work coil 7.
・External bead cutter 10・・Disc-shaped cutting tool 12A・・Mandrel 12B・・In-heater 13・
・Holder 26.29・・Bearing θ・・Ski-angle Patent applicant Patent attorney representing Sumitomo Metal Industries Co., Ltd.
Yoshihisa Nagai, Figure 6 Procedural Amendment, March 8, 1980, Haruki Shimada, Commissioner of the Patent Office. Cao Do Nakai Shoulder ” Han Kojia ←
2. Title of the invention Welded pipe bead cutting device 3 Relationship with the case of the person making the amendment Patent applicant 4, agent 136 6. Number of inventions to be increased by the amendment 7, drawings subject to the amendment 8, amendment Content
Claims (1)
イトラビードに対向して、バイトの軸線がビード流几方
向に対してその切削抵抗により従回転するスキュー角度
をもって配設したことを特徴とする溶接管のビード切削
装置。(1) A welding method characterized in that the axis of the cutting tool is disposed at a skew angle with respect to the bead flow direction so that it rotates due to the cutting resistance, facing a disk-shaped cutting tool bead that is held so as to be freely rotatable at idle. Pipe bead cutting equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2786782A JPS58143908A (en) | 1982-02-23 | 1982-02-23 | Bead cutter of welded tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2786782A JPS58143908A (en) | 1982-02-23 | 1982-02-23 | Bead cutter of welded tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58143908A true JPS58143908A (en) | 1983-08-26 |
Family
ID=12232846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2786782A Pending JPS58143908A (en) | 1982-02-23 | 1982-02-23 | Bead cutter of welded tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58143908A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6144519A (en) * | 1984-07-31 | 1986-03-04 | Sumitomo Metal Ind Ltd | Equipment for cutting bead on welded pipe |
| DE3825919A1 (en) * | 1988-02-22 | 1989-08-31 | Sumitomo Metal Ind | METHOD AND DEVICE FOR SEPARATING THE WELDING BED OF SEAM-WELDED TUBES |
| US5005395A (en) * | 1988-03-23 | 1991-04-09 | Sumitomo Metal Industries, Ltd. | Method of manufacturing electric welded pipes under hot conditions |
| JP2018118371A (en) * | 2017-01-20 | 2018-08-02 | 株式会社ジェイテクト | Cutting method and cutting device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4856547A (en) * | 1971-10-12 | 1973-08-08 |
-
1982
- 1982-02-23 JP JP2786782A patent/JPS58143908A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4856547A (en) * | 1971-10-12 | 1973-08-08 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6144519A (en) * | 1984-07-31 | 1986-03-04 | Sumitomo Metal Ind Ltd | Equipment for cutting bead on welded pipe |
| DE3825919A1 (en) * | 1988-02-22 | 1989-08-31 | Sumitomo Metal Ind | METHOD AND DEVICE FOR SEPARATING THE WELDING BED OF SEAM-WELDED TUBES |
| US4936723A (en) * | 1988-02-22 | 1990-06-26 | Sumitomo Metal Industries, Ltd. | Method and apparatus for cutting off the beads of seam-welded pipes |
| US5005395A (en) * | 1988-03-23 | 1991-04-09 | Sumitomo Metal Industries, Ltd. | Method of manufacturing electric welded pipes under hot conditions |
| JP2018118371A (en) * | 2017-01-20 | 2018-08-02 | 株式会社ジェイテクト | Cutting method and cutting device |
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