JPS6090621A - Method of cutting pipe from inside - Google Patents
Method of cutting pipe from insideInfo
- Publication number
- JPS6090621A JPS6090621A JP19892683A JP19892683A JPS6090621A JP S6090621 A JPS6090621 A JP S6090621A JP 19892683 A JP19892683 A JP 19892683A JP 19892683 A JP19892683 A JP 19892683A JP S6090621 A JPS6090621 A JP S6090621A
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- pipe
- crack
- cutting
- cut
- 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
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
- B23D21/14—Machines or devices for shearing or cutting tubes cutting inside the tube
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は、管を内側から切断する方法の改良に関する。[Detailed description of the invention] The present invention relates to an improved method for cutting tubes from the inside.
管を内側から切断する従来のディスクカッタは、カッタ
刃先を太きガ力で管の内周面に押付け、その押付は部近
傍の材料を塑性変形させ、刃先先端部の材料を押しのけ
るようにして刃先先端が深く進んでいって、管を内側か
ら切断するものであった。A conventional disc cutter that cuts a pipe from the inside presses the cutter blade against the inner circumferential surface of the pipe with a strong force, and this pressing plastically deforms the material near the cutter and pushes away the material at the tip of the blade. The tip of the blade went deep and cut the tube from the inside.
しかしこの方式では、塑性変形させる為の大きな押付力
を必要とすること、及び刃先先端と材料との摩擦による
摩耗（損傷）が大きいという欠点があった。また加工硬
化の大きいステンレス鋼の場合、切断の進行に伴ない、
刃先先端部付近の材料の加工硬化が大きくなり、刃先先
端が深く進行する為の押付力もそれにつれて大きくする
ことが必要となる。その為、管の肉厚が大きく々る程切
断が困難となり、ある厚さ以上では切断が不可能となる
ものである。However, this method has the disadvantage that a large pressing force is required to cause plastic deformation, and that wear (damage) due to friction between the tip of the cutting edge and the material is large. In addition, in the case of stainless steel, which is highly work hardened, as the cutting progresses,
As the work hardening of the material near the tip of the cutting edge increases, it becomes necessary to increase the pressing force in order for the tip of the cutting edge to advance deeper. Therefore, the thicker the tube, the more difficult it becomes to cut it, and beyond a certain thickness it becomes impossible to cut it.
本発明は、斯かる問題点を解消すべくなされたもので、
カッタ刃先の押付力を極端に大きくすることなく、また
刃先先端を損傷させることなく、さらには比較的肉厚の
大きい管でも内側から切断できる切断方法を提供するこ
とを目的とするものである。The present invention has been made to solve such problems,
To provide a cutting method capable of cutting even relatively thick pipes from the inside without extremely increasing the pressing force of a cutter blade or damaging the tip of the blade.
以下本発明による内側からの管の切断方法について説明
する。先ず本法を実施する為の切断装置の概要を第１．
２．３図によって説明すると、１は長尺管状のカッタ駆
動軸で、その基端がユニバーサルジヨイント２によシ減
速機３の伝導軸４に連結され、減速機３が油圧モータ５
に接続されている。伝導軸４の後端には回転数を計測す
る回転計６が連繋され、伝導軸４の中心部に圧油通路７
が形成され、圧油通路７の後端に圧油供給ホース８が接
続され、圧油通路７の前端は外周面に屈曲開口され、こ
れに後述するカッタ押付用油圧シリンダへの圧油供給ホ
ース９が接続されている。前記減速機３の筐体前面には
切断すべき長尺小径配管Ｐの開口端部を嵌入する支持筒
１０が固設され、これの外周に前記開口端部を締付けて
保持するボルト１１が取付けられている。１２は油圧モ
ータ５、減速機３等の駆動部を支持した架台である。前
記カッタ駆動軸１の先端のフランジ１３に、連結軸１４
が後端のフランジ１５にて接続されて、カッタ駆動軸１
の先端部内側に、前記連結軸１４の後端面中央に取付け
たアキュームレータ１６が内蔵されている。連結軸１４
の前部は断面六角形で、これがコ字形の軸取付台１７の
後端面の管軸１７ａ に嵌合され、ピン１８にて結合さ
れている。軸取付台１７は左右両側の上下に長穴１９が
設けられ、この長穴１９にボルト２０を通して反力ロー
ラ２１の本体金具２２の後側外面に締付固定されている
。反力ローラ２１はその軸穴にオイルレスドライメット
２１ａ がはめ合いで取付けられて本体金具２２の前後
両側間、の下側で左右対称に軸２３に回転可能に支持さ
れている。本体金具２２の上側には第３図に示されるよ
うに凹部２４が設けられ、これに側面Ｕ形のカッタホル
ダ２５が進退可能に装着されている。カッタホルダ２５
の内側には第１カツタ２６、第２カツタ２６が左右に回
転可能に支持されている。即ち、両力ツタ２６．２６’
を夫々保持した保持パイプ２７．２７’が両側にゴム製
のディスタンスピース２８を配して軸２９．２９’にて
カッタホルダ２５の内側に回転可能に支持されている。The method for cutting a tube from the inside according to the present invention will be described below. First, an overview of the cutting device used to implement this method will be given in Section 1.
To explain with reference to Figure 2.3, 1 is a long tubular cutter drive shaft, the base end of which is connected to a transmission shaft 4 of a reduction gear 3 through a universal joint 2, and the reduction gear 3 is connected to a hydraulic motor 5.
It is connected to the. A tachometer 6 for measuring the rotational speed is connected to the rear end of the transmission shaft 4, and a pressure oil passage 7 is provided at the center of the transmission shaft 4.
A pressure oil supply hose 8 is connected to the rear end of the pressure oil passage 7, and the front end of the pressure oil passage 7 is bent and opened on the outer peripheral surface, and a pressure oil supply hose 8 to a hydraulic cylinder for pressing a cutter, which will be described later, is connected to the front end of the pressure oil passage 7. 9 is connected. A support tube 10 into which the open end of the long small diameter pipe P to be cut is fitted is fixedly installed on the front surface of the casing of the reducer 3, and a bolt 11 is attached to the outer periphery of the support tube 10 to tighten and hold the open end. It is being Reference numeral 12 denotes a frame that supports driving parts such as the hydraulic motor 5 and the speed reducer 3. A connecting shaft 14 is attached to the flange 13 at the tip of the cutter drive shaft 1.
are connected at the rear end flange 15, and the cutter drive shaft 1
An accumulator 16 attached to the center of the rear end surface of the connecting shaft 14 is built inside the tip end of the connecting shaft 14 . Connection shaft 14
The front part of the tube has a hexagonal cross section, and is fitted onto a tube shaft 17a on the rear end surface of a U-shaped shaft mount 17, and is connected with a pin 18. The shaft mount 17 is provided with elongated holes 19 on the upper and lower sides of the left and right sides, and bolts 20 are passed through the elongated holes 19 and fastened to the rear outer surface of the main body fitting 22 of the reaction roller 21. The reaction roller 21 is fitted with an oilless drymet 21a in its shaft hole, and is rotatably supported on a shaft 23 symmetrically between the front and rear sides of the main body fitting 22 on the lower side thereof. As shown in FIG. 3, a recess 24 is provided on the upper side of the main body fitting 22, and a cutter holder 25 having a U-shaped side surface is attached to the recess 24 so as to be able to move forward and backward. Cutter holder 25
A first cutter 26 and a second cutter 26 are supported inside so as to be rotatable left and right. That is, both power ivy 26.26'
Holding pipes 27 and 27' holding the respective holding pipes are rotatably supported inside the cutter holder 25 by shafts 29 and 29' with rubber distance pieces 28 arranged on both sides.
第１カツタ２６は刃先角が鋭く、第２カツタ２６′は刃
先角が鈍いものである。保持パイプ２７．２７’の内周
には反力ローラ２１の場合と同様オイルレスドライメッ
ト３０がはめ合いで取付けられている。カッタホルダ２
５の内側には左右に潤滑油塗布材３１が設けられ、両側
外面には水平な支持杆３２を有するプレート３３がボル
ト３４にて締付固定され、支持杆３２には透孔３５が垂
直に穿設されてこの透孔３５に本体金具２２の前稜両外
側面中央に垂直に取付は九カッタ押付用油圧シリンダ３
６のピストンロッド３７の先端ねじ部が貫通されてナツ
ト３８にて支持杆３２に締付固定されている。カッタ押
付用油圧シリンダ３６の下室には前述の圧油供給ホース
９が接続され、王室には前述のアキュームレータ１６と
の間に圧油ホース９′が連結されている。The first cutter 26 has a sharp edge angle, and the second cutter 26' has a blunt edge angle. As with the reaction roller 21, an oilless Drymet 30 is attached to the inner periphery of the holding pipe 27, 27' in a fitted manner. Cutter holder 2
Lubricating oil applicators 31 are provided on the left and right inside of the frame 5, and a plate 33 having horizontal support rods 32 is tightened and fixed on the outer surface of both sides with bolts 34. The support rods 32 have vertical through holes 35. A hydraulic cylinder 3 for pressing a nine cutter is installed perpendicularly to the center of both outer surfaces of the front edge of the main body fitting 22 in this through hole 35.
The threaded end of the piston rod 37 of No. 6 is passed through the piston rod 37 and is fastened to the support rod 32 with a nut 38. The pressure oil supply hose 9 mentioned above is connected to the lower chamber of the cutter pressing hydraulic cylinder 36, and the pressure oil hose 9' is connected between the lower chamber and the accumulator 16 mentioned above.
前述の圧油供給ホース８は図示せぬがカッタ押付力検出
針、カッタ変位検出器、ポンプ等を介在して油圧源に連
繋されている。The aforementioned pressure oil supply hose 8 is connected to a hydraulic power source via a cutter pressing force detection needle, a cutter displacement detector, a pump, etc. (not shown).
尚、斯かる構成の切断装置は、図示せぬ移動台車に支持
されており、長尺小径配管Ｐは切断時の振動防止及び搬
出の為に図示せぬ別の移動台車に取付けられた配管固定
装置に保持されるものである。The cutting device having such a configuration is supported by a movable trolley (not shown), and the long small diameter pipe P is fixed to another movable trolley (not shown) in order to prevent vibration during cutting and to transport the pipe. It is held in the device.
次に上記の切断装置を用いる本発明の内側からの管の切
断方法について説明する。先ず図示せぬ移動台車の配管
固定装置に切断すべき長尺小径配管Ｐを保持し、これに
切断装置を支持した移動台車を接近させ、長尺小径配管
Ｐの開口端よシ内部に切断装置のカッタ駆動軸１を挿入
し、長尺小径配管Ｐの開口端部を支持筒１０内に嵌入し
、支持筒１０の外周のボルト９を締付けて開口端部を第
１図の如く保持する。次に第１カツタ２６を長尺小径配
管Ｐの内周面に当接すべく図示せぬポンプを運転し、油
圧源より圧油を圧油供給ホース８にて送シ、伝導軸４の
中心部の圧油通路７、圧油供給ホース９を通して一対の
カッタ押付用油圧シリンダ３６に供給し、ピストンロッ
ド３７を前進させてカッタホルダ２５を前進させ、ｇｇ
１カッタ２６を長尺小径配管Ｐの内周面に押付ける。Next, a method of cutting a tube from the inside according to the present invention using the above-mentioned cutting device will be explained. First, a long small diameter pipe P to be cut is held in a pipe fixing device of a movable trolley (not shown), a movable trolley supporting a cutting device is brought close to this, and the cutting device is placed inside the open end of the long small diameter pipe P. The cutter drive shaft 1 is inserted, the open end of the long small diameter pipe P is fitted into the support tube 10, and the bolt 9 on the outer periphery of the support tube 10 is tightened to hold the open end as shown in FIG. Next, a pump (not shown) is operated to bring the first cutter 26 into contact with the inner peripheral surface of the long small-diameter pipe P, and pressure oil is sent from the hydraulic source through the pressure oil supply hose 8 to the center of the transmission shaft 4. The pressure oil is supplied to the pair of cutter pressing hydraulic cylinders 36 through the pressure oil passage 7 and the pressure oil supply hose 9, and the piston rod 37 is advanced to advance the cutter holder 25.
1. Press the cutter 26 against the inner peripheral surface of the long small diameter pipe P.
然して油圧モータ５に圧油を供給して駆動し、減速機３
を介して伝導軸４を回転し、これにユニザーサルジョイ
ント２を介して連結されたカッタ駆動軸１を回転し、第
１カツタ２６、第２カツク２６を長尺小径配管Ｐの内周
面に沿って回転し、且つ徐々に前進させながら長尺小径
配管Ｐを内側から切断してい〈。即ち、第４図ａに示す
如く刃先角の鋭い第１カツタ２６で長尺小径配管Ｐの内
周面にクラックＣを入れ、そのクラックＣに仝図すに示
す如く刃先角の鈍い第２カツタ２６′で楔を打込むよう
に割れ目を押し拡げ、その押し拡げた割れ目の先端には
仝図Ｃに示す如く第１カツタ２６によりクラックｄを入
れ、そのクラックＣは仝図ｄに示す如く第２カツタ２６
′で楔を打込むように割れ目を押し拡げることが連続的
に繰返されて割れ目の先端が進められ、長尺小径配管Ｐ
が内側から切断されていく。この切断中の反力は、第１
カツタ２６、第２カツタ２６とは反対側に位置して本体
金具２２に回転可能に保持された２個の反力ローラ２１
が長尺配管Ｐの内周面に沿って回転することによシ受け
るので、カッタホルダ２５ならびにカッタ駆動軸１に曲
げモーメントが加わることがないので、第１カツタ２６
、第２カツタ２６に十分な刃先押付力が作用するので、
前記の切断が円滑に行われる。Then, pressure oil is supplied to the hydraulic motor 5 to drive it, and the reducer 3
The transmission shaft 4 is rotated through the transmission shaft 4, and the cutter drive shaft 1 connected thereto through the universal joint 2 is rotated to rotate the first cutter 26 and the second cutter 26 on the inner peripheral surface of the long small diameter pipe P. The long and small diameter pipe P is cut from the inside while rotating along the same axis and gradually moving forward. That is, as shown in FIG. 4a, a first cutter 26 with a sharp cutting edge angle is used to make a crack C in the inner circumferential surface of the long small diameter pipe P, and then a second cutter with a blunt cutting edge angle is inserted into the crack C as shown in the figure. 26' to spread the crack as if driving a wedge, and at the tip of the spread crack, make a crack d with the first cutter 26 as shown in Figure C. 2 katsuta 26
′ is continuously repeated to push and widen the crack like driving a wedge, the tip of the crack is advanced, and the long small diameter pipe P
is being severed from the inside. This reaction force during cutting is the first
Two reaction rollers 21 are located on opposite sides of the cutter 26 and the second cutter 26 and are rotatably held on the main body metal fitting 22.
Since the first cutter 26 is rotated along the inner peripheral surface of the long pipe P, no bending moment is applied to the cutter holder 25 and the cutter drive shaft 1.
, a sufficient cutting edge pressing force is applied to the second cutter 26, so that
The above-mentioned cutting is performed smoothly.
長尺小径配管Ｐの切断を終えたならば、支持筒１０の外
周のボルト１１を緩めた後、配管固定装置（図示省略）
から長尺小径配管Ｐの保持を解除し、切断した長尺小径
配管Ｐの開口端部を支持筒１０内より抜き取って外す。After cutting the long small diameter pipe P, loosen the bolts 11 on the outer periphery of the support tube 10, and then remove the pipe fixing device (not shown).
Then, the holding of the long small diameter pipe P is released, and the open end of the cut long small diameter pipe P is pulled out from inside the support tube 10 and removed.
尚、次に切断する長尺小径配管Ｐの肉厚が大きい場合は
、軸取付台１７の長穴１９を通して本体金具２２に締付
けたボルト２０を緩め、本体金具２２をボルト２０を介
して軸取付台１７に対してスライドさせ、反力ローラ２
１をカッタ駆動軸１の軸中心線側に寄せて第１カツタ２
６、第２カツタ２６′の位置を調整することによシ、そ
の長尺小径配管Ｐ内に挿入して前述の如く円滑に切断す
ることができる・
以上の説明で判るように本発明による内側からの管の切
断方法は、刃先角の鋭い第１カツタ２６と刃先角の鈍い
第２カツタ２６′の二枚を用い、第１カツタ２６で管Ｐ
の内周面にクラックに入れ、そのクラックを第２カツタ
２６′で押し拡げ、その押し拡げた割れ目の先端に第１
カツタ２６でクラックを入れ、そのクラックを第２カツ
タ２６′で押し拡げることを連続的に繰返して管Ｐを切
断するのであるから、第１カツタ２６の鋭い刃先は管Ｐ
の内周面の材料と接触するが、第２カツタ２６′の鈍い
刃先は管Ｐの内周面の材料と接触せず、刃の横面で接触
するので、第２カツタ２６′の刃先は殆んど損傷するこ
とが無い。In addition, if the wall thickness of the long small diameter pipe P to be cut next is large, loosen the bolt 20 tightened to the main body fitting 22 through the long hole 19 of the shaft mounting base 17, and attach the main body fitting 22 to the shaft via the bolt 20. Slide it against the stand 17, and
1 toward the center line of the cutter drive shaft 1, and then move the first cutter 2.
6. By adjusting the position of the second cutter 26', it can be inserted into the long small diameter pipe P and cut smoothly as described above. As can be seen from the above explanation, the inner side cutter according to the present invention The method of cutting the pipe from P
A crack is placed on the inner peripheral surface of the crack, the crack is pushed open with the second cutter 26', and a first cutter is placed at the tip of the pushed open crack.
Since the pipe P is cut by continuously repeating making a crack with the cutter 26 and expanding the crack with the second cutter 26', the sharp cutting edge of the first cutter 26 is
However, the blunt cutting edge of the second cutter 26' does not come into contact with the material on the inner circumferential surface of the pipe P, but contacts the side surface of the blade, so the cutting edge of the second cutter 26' There is almost no damage.
この第２カツタ２６′の刃の横面ば摩耗するが、切断能
力から見た場合摩耗の影響は極めて少ない。Although the lateral surface of the blade of the second cutter 26' wears out, the effect of the wear is extremely small in terms of cutting ability.
また第１カツタ２６は管Ｐの内周面の材料に最初にクラ
ックを入れる時の摩擦抵抗は太きいが、その後第１カツ
タ２６は第２カツタ２６により押し拡げられた割れ目の
先端にクラックを入れる程度であるから、摩擦抵抗が小
さく摩耗（損傷）が極めて少ない。Furthermore, when the first cutter 26 first cracks the material on the inner circumferential surface of the pipe P, the frictional resistance is large, but after that, the first cutter 26 cracks the tip of the crack that has been expanded by the second cutter 26. Since it is only a small amount that can be inserted, the frictional resistance is small and wear (damage) is extremely low.
さらに第１カツタ２６は刃先にて管Ｐの内周面の材料に
クラックを入れて塑性変形する量が少なく、第２カツタ
２６は刃の横面でクラックを押し拡げるだけで刃先を用
いないので、両力ツタ２６．２６には大きガ刃先押付力
を必要とせず、小さな刃先押付力で良い。Furthermore, the first cutter 26 cracks the material on the inner circumferential surface of the pipe P with its cutting edge and causes less plastic deformation, while the second cutter 26 only uses the side surface of the blade to spread the crack and does not use its cutting edge. , the double force vine 26.26 does not require a large cutting edge pressing force, and only needs a small cutting edge pressing force.
また管Ｐを切断していく途中での第１カツタ２６、第２
カツタ２６′による材料の塑性変形量が小さいので、加
工硬化の大きいステンレス鋼の如き材料よシなる管の場
合でも、切断の進行に伴う加工硬化が少なく、従って比
較的肉厚の大きい管でも容易に切断できる等の優れた効
果がある。Also, while cutting the pipe P, the first cutter 26 and the second cutter
Since the amount of plastic deformation of the material by the cutter 26' is small, there is little work hardening as the cutting progresses, even for pipes made of materials other than stainless steel, which has a large work hardening effect, and therefore it is easy to cut even relatively thick pipes. It has excellent effects such as being able to cut into pieces.
第１図は本発明の切断方法を実施する為の装置の一例を
示す側面図、第２図は第１図Ａ部拡大図、第３図は第２
図のＢ−Ｂ線矢視図、第４図ａ乃至ｄは本発明の切断方
法の要領を示す工程図である。
１・・・カッタ駆動軸 ３・・・減速機４・・・伝導軸
５・・・油圧モータ ７・・・圧油回路 ８，９・・
・圧油供給ホース １０・・・支持筒 １１・・・ボル
ト １７・・・軸取付台１９・・・長穴 ２０・・・ボ
ルト ２１・・・反力ローラ ２４・・・凹部 ２５・
拳・カッタホルダ ２６・・・第１カツタ ２６′・・
・第２カツタ ２７，２７・・・保持パイプ２８・・・
ディスタンスピース ３２・・・支持杆 ３５・・・透
孔 ３６・・・カッタ押付用油圧シリンダ ３７・・・
ピストンロンド３８・・・ナラ）Ｐ・・・長尺小径配管
ｃ、ｃ’・・・クラック
出 願 人 川崎重工業株式金社
代 理 人 弁理士 高 雄次部
第３図
第４図（。） 第４図（ｂ）
第４図（Ｃ） 第４図（ｄ）Fig. 1 is a side view showing an example of an apparatus for carrying out the cutting method of the present invention, Fig. 2 is an enlarged view of part A in Fig. 1, and Fig. 3 is an enlarged view of part A of Fig. 1.
The BB line arrow view in the figure and FIGS. 4a to 4d are process diagrams showing the main points of the cutting method of the present invention. 1...Cutter drive shaft 3...Reducer 4...Transmission shaft 5...Hydraulic motor 7...Pressure oil circuit 8,9...
・Pressure oil supply hose 10...Support tube 11...Bolt 17...Shaft mounting base 19...Elongated hole 20...Bolt 21...Reaction roller 24...Concavity 25・
Fist/cutter holder 26...1st cutter 26'...
・Second cutter 27, 27...holding pipe 28...
Distance piece 32...Support rod 35...Through hole 36...Hydraulic cylinder for pressing cutter 37...
Piston Rond 38...Oak) P...Long small diameter piping c, c'...Crack Application Person: Kawasaki Heavy Industries, Ltd. Kinsha Representative Person: Patent attorney Yuji Takabe Figure 3 Figure 4 (.) Figure 4 Figure 4 (b) Figure 4 (C) Figure 4 (d)
Claims (1)
タと刃先角の鈍い第２カツタの二枚を用い、第１カツタ
で管の内周面にクラックを入れ、そのクラックを第２カ
ツタで押し拡げ、その押し拡げた割れ目の先端に第１カ
ツタでクラックを入れ、そのクラックを第２カツタで押
し拡げることを連続的に繰返して管を切断することを特
徴とする内側からの管の切断方法。To cut the pipe from the inside, use two cutters, a first cutter with a sharp edge angle and a second cutter with a blunt edge angle, make a crack in the inner circumferential surface of the tube with the first cutter, and remove the crack with the second cutter. A pipe from the inside, characterized in that the pipe is cut by continuously repeating the steps of: spreading the pipe with a cutter, making a crack at the tip of the spread crack with a first cutter, and spreading the crack with a second cutter. cutting method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19892683A JPS6090621A (en) | 1983-10-24 | 1983-10-24 | Method of cutting pipe from inside |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19892683A JPS6090621A (en) | 1983-10-24 | 1983-10-24 | Method of cutting pipe from inside |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6090621A true JPS6090621A (en) | 1985-05-21 |
Family
ID=16399257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19892683A Pending JPS6090621A (en) | 1983-10-24 | 1983-10-24 | Method of cutting pipe from inside |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6090621A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414644A (en) * | 2015-12-03 | 2016-03-23 | 无锡市晨源建筑器材有限公司 | Welded steel tube machining cutting machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5524858A (en) * | 1978-08-08 | 1980-02-22 | Kobe Steel Ltd | Method and apparatus of cutting radioactive waste container |
| JPS569118A (en) * | 1979-07-04 | 1981-01-30 | Kobe Steel Ltd | Cutting apparatus for cylindrical member |
-
1983
- 1983-10-24 JP JP19892683A patent/JPS6090621A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5524858A (en) * | 1978-08-08 | 1980-02-22 | Kobe Steel Ltd | Method and apparatus of cutting radioactive waste container |
| JPS569118A (en) * | 1979-07-04 | 1981-01-30 | Kobe Steel Ltd | Cutting apparatus for cylindrical member |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414644A (en) * | 2015-12-03 | 2016-03-23 | 无锡市晨源建筑器材有限公司 | Welded steel tube machining cutting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6460752B1 (en) | Method of friction stir welding with grooved backing member | |
| CN208496576U (en) | A kind of steel pipe notch burr remover | |
| JP2004508205A (en) | Pipe making equipment | |
| US6109503A (en) | Internal pipe clamp | |
| JPH0542393A (en) | Body pipe joining welding deformation preventing device | |
| JPS6090621A (en) | Method of cutting pipe from inside | |
| NO874481L (en) | DEVICE FOR REMOVAL OF INTERIOR DEGREES. | |
| US4079614A (en) | Method and apparatus for flanging a length of spirally wound corrugated pipe | |
| JPS6071110A (en) | Pipe cutting device from its inside | |
| US3456856A (en) | Cutting tool | |
| JP2001205367A (en) | Method for bending tube end flange part | |
| US3868773A (en) | Bead removal tool | |
| US4471516A (en) | Boiler tube pulling method and apparatus | |
| JP3554855B2 (en) | Metal shaft expanding device | |
| JP4687931B2 (en) | Complex pipe manufacturing equipment | |
| JPH0952128A (en) | Method for forming flange on end of stainless steel tube and device for working flange | |
| CN211966520U (en) | Production equipment for flue of steelmaking converter | |
| JP2004106001A (en) | Method and apparatus for reducing end part of metallic pipe | |
| CN210849654U (en) | Steel pipe production and processing removes thorn device | |
| CN218947867U (en) | Simple cutter for friction plate | |
| CN218591992U (en) | Pipeline processing equipment | |
| CN220591742U (en) | Production is with processing anchor clamps | |
| CN211464398U (en) | Hardware bending device | |
| JPH11179469A (en) | Thread rolling device for tube | |
| JP2000237832A (en) | Method and device for expanding metal tube |