JP2939409B2 - 4-blade steel pipe cutting machine - Google Patents

4-blade steel pipe cutting machine

Info

Publication number
JP2939409B2
JP2939409B2 JP34746693A JP34746693A JP2939409B2 JP 2939409 B2 JP2939409 B2 JP 2939409B2 JP 34746693 A JP34746693 A JP 34746693A JP 34746693 A JP34746693 A JP 34746693A JP 2939409 B2 JP2939409 B2 JP 2939409B2
Authority
JP
Japan
Prior art keywords
swing
pair
gear
steel pipe
cutting machine
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 - Lifetime
Application number
JP34746693A
Other languages
Japanese (ja)
Other versions
JPH07185931A (en
Inventor
義夫 林
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.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
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Filing date
Publication date
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Priority to JP34746693A priority Critical patent/JP2939409B2/en
Publication of JPH07185931A publication Critical patent/JPH07185931A/en
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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、4刃式鋼管切断機に関
する。さらに詳しくは、鋸刃を自転させながら被切断管
のまわりを公転させて鋼管を切断する形式の4刃式鋼管
切断機に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a four-cut steel pipe cutting machine. More specifically, the present invention relates to a four-blade steel pipe cutting machine that cuts a steel pipe by revolving around a pipe to be cut while rotating a saw blade.

【0002】[0002]

【従来の技術】従来より鋼管切断機としては鋸刃を自転
させながら被切断管のまわりを公転させる型式のものが
知られており、それらには鋸刃を3個備えた3刃式(特
開昭59− 69213号公報参照)のものや4刃式のもの等が
ある。従来の4刃式鋼管切断機では、4個の鋸刃が同一
の軌跡を描いて動き鋼管を切断するように構成されてい
る。
2. Description of the Related Art Conventionally, as a steel pipe cutting machine, there is known a type in which a saw blade is rotated and revolves around a pipe to be cut. No. 59-69213) and a four-flute type. In a conventional four-blade steel pipe cutting machine, four saw blades are configured to move along the same trajectory to cut a steel pipe.

【0003】[0003]

【発明を解決しようとする課題】ところで、断面正方形
の角管は各辺の長さが同一であるので、角管と丸管は同
一軌跡を有する4個の鋸刃で切断することができる。し
かし断面長方形のレクトアンギュラ管は長辺と短辺があ
り、各辺の長さが全て同一でないので同一軌跡の4辺で
切断することはできない。本発明はかかる事情に鑑み、
丸管や角管だけでなくレクトアンギュラ管の切断が可能
な4刃式鋼管切断機を提供することを目的とする。
The square tube having a square cross section has the same length on each side. Therefore, the square tube and the round tube can be cut by four saw blades having the same locus. However, a rectangular rectangular tube has a long side and a short side, and the length of each side is not the same, so that it cannot be cut along four sides of the same locus. The present invention has been made in view of such circumstances,
It is an object of the present invention to provide a four-blade steel pipe cutting machine capable of cutting not only round pipes and square pipes but also rectangular angular pipes.

【0004】[0004]

【課題を解決するための手段】請求項1の発明の4刃式
鋼管切断機は、被切断管の中心と同軸まわりに回転自在
な面板と、基端に揺動軸を有し先端に鋸刃を回転自在に
軸支した4個のカッターヘッドとからなり、前記4個の
カッターヘッドの揺動軸を面板上において円周方向90度
間隔で揺動自在に軸支した4刃式鋼管切断機であって、
前記4個のカッターヘッドのうち、前記面板の回転中心
において点対称となる一対のカッターヘッドの組を同調
して揺動させる第1揺動機構と、他の一対のカッターヘ
ッドの組を同調して揺動させる第2揺動機構設けられ
ており、前記第1揺動機構が、前記一対のカッターヘッ
ドにおける一対の揺動軸にそれぞれ取付けたピニオンに
噛合する外歯歯車と、該外歯歯車を回転駆動する第1の
揺動モータとからなり、前記第2揺動機構が、前記他の
一対のカッターヘッドにおける一対の揺動軸にそれぞれ
取付けたピニオンに噛合すると共に前記外歯歯車と同心
かつ外側に配置された内歯歯車と、該内歯歯車を回転駆
動する第2の揺動モータとからなることを特徴とする。
請求項2の発明の請求項1記載の発明において、4刃式
鋼管切断機は、前記鋸刃の回転駆動機構が、前記4個の
カッターヘッドのそれぞれの揺動軸内に回転自在に挿入
されている鋸刃回転用の駆動軸にそれぞれピニオンを取
付け、該4個のピニオンに同時に噛合する歯車と、該歯
車を回転駆動する鋸刃駆動モータとからなることを特徴
とする。
According to a first aspect of the present invention, there is provided a four-blade steel pipe cutting machine comprising: a face plate rotatable around the same axis as the center of a pipe to be cut; A four-blade steel pipe cutting machine comprising four cutter heads rotatably supporting blades, the rocking shafts of the four cutter heads being rotatably supported at 90-degree circumferential intervals on a face plate. Machine,
Among the four cutter heads, a first swing mechanism for synchronizing and swinging a pair of a pair of cutter heads that are point-symmetric with respect to the center of rotation of the face plate and another pair of cutter heads are synchronized. second swinging mechanism for swinging is provided Te
And the first swinging mechanism is provided with the pair of cutter heads.
Pinions attached to a pair of swing shafts
An external gear that meshes with a first gear that rotationally drives the external gear;
A swinging motor, wherein the second swinging mechanism is the other swinging motor.
Each of a pair of swing shafts in a pair of cutter heads
Meshing with the mounted pinion and concentric with the external gear
And an externally arranged internal gear and a rotary drive for the internal gear.
And a second oscillating motor that moves .
The four-blade type according to the first aspect of the present invention.
In the steel pipe cutting machine, the rotary drive mechanism of the saw blade is provided with the four
Rotatably inserted into each swing axis of the cutter head
The pinion on the drive shaft for rotating the saw blade
A gear that meshes with the four pinions at the same time;
It is characterized by comprising a saw blade drive motor that rotates the car
And

【0005】[0005]

【作用】請求項1の発明では、第1揺動機構の第1の揺
動モータと第2揺動機構の第2の揺動モータは互いに独
立しているので、一対のカッターヘッドの揺動角と他の
一対のカッターヘッドの揺動角を、前者は大きく後者は
小さくというように揺動角を変えることができる。この
ため、面板を90度回転させたときレクトアンギュラ管
の長辺を切断できる位置へ一対のカッターヘッドを位置
させ、短辺を切断できる位置へ他の一対のカッターヘッ
ドを位置させることができるので、レクトアンギュラ管
の切断が可能となる。丸管や角管の場合は、4個の鋸刃
を同一軌跡で揺動させればよい。請求項2の発明によれ
ば、揺動軸内に駆動軸を挿入した構成により、スペース
をとらないコンパクトな駆動系とすることができる。
According to the invention of the first aspect, the first swing mechanism of the first swing mechanism is provided.
Since dynamic motor and a second oscillating motor of the second swing mechanism are independent of each other, the swinging angle of the swinging angle and the other pair of cutter head of a pair of cutter head, the former is larger the latter is small Thus, the swing angle can be changed. Therefore, when the face plate is rotated by 90 degrees, one pair of cutter heads can be located at a position where the long side of the rectangular rectangular tube can be cut, and another pair of cutter heads can be located at a position where the short side can be cut. In addition, it becomes possible to cut the rect angular tube. In the case of a round tube or a square tube, four saw blades may be swung along the same locus. According to the invention of claim 2
If the drive shaft is inserted inside the swing shaft,
A compact drive system that does not take up cost can be obtained.

【0006】[0006]

【実施例】つぎに、本発明の実施例を図面に基づき説明
する。図1は本発明の一実施例に係わる鋼管切断機の構
成説明図である。1は面板であり、中央に被切断管Pを
通す孔2が形成されており、外周には外歯3が形成され
ている。この外歯3にはピニオン4が噛合し、ピニオン
4には面板駆動モータ5が連結されており、面板駆動モ
ータ5によって面板1が回転させられる。なお、外歯3
を設ける代りに内歯を設け、これにピニオン4を噛合さ
せてもよく、面板1を回転させる機構は任意である。
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration explanatory view of a steel pipe cutting machine according to one embodiment of the present invention. Reference numeral 1 denotes a face plate, in which a hole 2 for passing a pipe to be cut P is formed in the center, and external teeth 3 are formed on the outer periphery. A pinion 4 meshes with the external teeth 3, and a face plate drive motor 5 is connected to the pinion 4, and the face plate 1 is rotated by the face plate drive motor 5. In addition, external teeth 3
May be provided instead of the internal teeth, and the pinion 4 may be engaged with the internal teeth. The mechanism for rotating the face plate 1 is arbitrary.

【0007】A1,A2は面板1の回転中心において点対称
に位置する一対の鋸刃であり、B1,B2は他の一対の鋸刃
である。各鋸刃A1,A2,B1,B2はいずれもカッターヘッ
ドa10,a20,b10,b20 の先端に軸支されており、各カッタ
ーヘッドa10,a20,b10,b20 は基端に揺動軸a11,a21,b11,
b21 を備え、各揺動軸a11,a21,b11,b21 は面板1上にお
いて円周方向90度間隔に、回転自在に軸支されている。
また各揺動軸a11,a21,b11,b21 は面板1の後面へ延びて
おり、その端部にはピニオンa12,a22,b12,b22が取り付
けられている。そして、ピニオンa12,a22 には内リング
7に部分的に形成された2カ所の外歯a13,a23 がそれぞ
れ噛合している。またピニオンb12,b22にはリング8に
部分的に形成された2カ所の内歯b13,b23 がそれぞれ噛
合している。
A1 and A2 are a pair of saw blades located symmetrically about the center of rotation of the face plate 1, and B1 and B2 are another pair of saw blades. Each of the saw blades A1, A2, B1, B2 is pivotally supported at the tip of a cutter head a10, a20, b10, b20, and each of the cutter heads a10, a20, b10, b20 has a pivot shaft a11, a21, b11,
The swing shafts a11, a21, b11, and b21 are rotatably supported on the face plate 1 at intervals of 90 degrees in the circumferential direction.
The swing shafts a11, a21, b11, b21 extend to the rear surface of the face plate 1, and pinions a12, a22, b12, b22 are attached to their ends. Two external teeth a13 and a23 partially formed on the inner ring 7 mesh with the pinions a12 and a22, respectively. Two internal teeth b13 and b23 partially formed on the ring 8 mesh with the pinions b12 and b22, respectively.

【0008】前記内リング7にはドラム11が連結されて
おり、このドラム11の外周に外歯12が形成され、外歯12
に噛合するピニオン13には、揺動モータAが連結されて
いる。したがって、揺動モータAを駆動するとピニオン
13→外歯12→ドラム11→外歯a13,a23 と回転力が伝達さ
れ、外歯a13 からはピニオンa12 →揺動軸a11 と伝えら
れてカッターヘッドa10 が揺動し、一方で外歯a23 から
はピニオンa22 →揺動軸a21 と伝えられて、カッターヘ
ッドa20 が揺動する。そして、カッターヘッドa10 とカ
ッターヘッドa20 は歯車伝達機構a12,a3およびa22,a23
が同一構成であるため、完全に同調して同一角度を同一
方向に向かって揺動する。このカッターヘッドa10,a20
の揺動機構を第1揺動機構という。
A drum 11 is connected to the inner ring 7, and outer teeth 12 are formed on the outer periphery of the drum 11.
The swing motor A is connected to the pinion 13 that meshes with. Therefore, when the swing motor A is driven, the pinion
13 → external teeth 12 → drum 11 → external teeth a13 and a23, the torque is transmitted from the external teeth a13 to the pinion a12 → oscillation shaft a11, and the cutter head a10 swings, while the external teeth a23 From the pinion a22 to the swing shaft a21, and the cutter head a20 swings. The cutter head a10 and the cutter head a20 are connected to the gear transmission mechanisms a12, a3 and a22, a23.
Have the same configuration, they oscillate at the same angle in the same direction in perfect synchronization. This cutter head a10, a20
Is referred to as a first swing mechanism.

【0009】また前記外リング8には外周に外歯16が形
成され、この外歯16に噛合するピニオン17に揺動モータ
Bが連結されている。したがって揺動モータBを駆動す
ると、外リング8が回転し、内歯b13 →ピニオンb12 →
揺動軸b11 と回転力が伝達され、カッターヘッドb10 が
揺動し、一方で内歯b23 からはピニオンb22 →揺動軸b2
1 と回転力が伝達され、カッターヘッドb20 が揺動す
る。そして、カッターヘッドb10 とカッターヘッドb20
は歯車伝達機構b12,b13 およびb22,b23 が同一構成であ
るため、完全に同調して同一角度を同一方向に向かって
揺動する。このカッターヘッドb10,b20 の揺動機構を第
2揺動機構という。上記の第1揺動機構と第2揺動機構
はそれぞれ別個独立の駆動源である揺動モータA,Bを
有しているので、互いに相手方とは無関係に自系のカッ
ターヘッド( a10とa20 )、( b10とb20 )を揺動操作
することができる。
The outer ring 8 has external teeth 16 formed on the outer periphery. A swing motor B is connected to a pinion 17 meshing with the external teeth 16. Accordingly, when the rocking motor B is driven, the outer ring 8 rotates, and the internal teeth b13 → pinions b12 →
The rotational force is transmitted to the swing shaft b11, and the cutter head b10 swings, while the pinion b22 from the internal teeth b23 → the swing shaft b2
1 and the rotational force are transmitted, and the cutter head b20 swings. And cutter head b10 and cutter head b20
Since the gear transmission mechanisms b12, b13 and b22, b23 have the same configuration, they completely synchronize and swing at the same angle in the same direction. The swing mechanism of the cutter heads b10 and b20 is called a second swing mechanism. Since the first swing mechanism and the second swing mechanism have swing motors A and B, which are independent and independent driving sources, the cutter heads (a10 and a20) of the own system are independent of each other. ), (B10 and b20) can be rocked.

【0010】また各カッターヘッドa10,a20,b10,b20 内
には歯車伝達機構21等を内蔵し、先端に軸支している鋸
刃A1,A2,B2,B2に回転力を伝達できるようにしており
(図1ではカッターヘッドa10 のみ歯車伝達機構21を図
示)、その歯車伝達機構21の入力側には揺動軸a11,a12,
b11,b12 内を通る駆動軸を連結し、その末端にピニオン
a14,a24,b14,b24 を取り付けている。これらのピニオン
a14,a24,b14,b24 は前記ドラム11の外周に回転自在に取
り付けた外歯ギヤ18に噛合しており、外歯ギヤ18にはピ
ニオン19が噛合し、このピニオン19には鋸刃駆動モータ
20が連結されている。したがって、この駆動モータ20を
駆動すると、回転駆動力がピニオン19→外歯ギヤ18→ピ
ニオンa14,a24,b14,b24 →各カッターヘッドa10,a20,b1
0,b20 の歯車伝達機構21と伝えられ、各鋸刃ーA1,A2,
B1,B2を高速で回転させることができる。
Further, a gear transmission mechanism 21 and the like are built in each of the cutter heads a10, a20, b10, and b20 so that a rotational force can be transmitted to the saw blades A1, A2, B2, and B2 that are pivotally supported at the tips. (In FIG. 1, only the gear transmission mechanism 21 is shown in the cutter head a10), and the input side of the gear transmission mechanism 21 has swing shafts a11, a12,
Connect the drive shaft passing through b11 and b12, and pinion at the end
a14, a24, b14, b24 are attached. These pinions
a14, a24, b14, b24 mesh with an external gear 18 rotatably mounted on the outer periphery of the drum 11, a pinion 19 meshes with the external gear 18, and a saw blade driving motor
20 are linked. Therefore, when this drive motor 20 is driven, the rotational driving force is changed to the pinion 19 → the external gear 18 → the pinions a14, a24, b14, b24 → the respective cutter heads a10, a20, b1.
0, b20 and transmitted to the gear transmission mechanism 21, and saw blades A1, A2,
B1 and B2 can be rotated at high speed.

【0011】図2は前記実施例における鋸刃A1,A2,B
1,B2の配置と揺動角θa,θbを示す説明図である。
中心にレクトアンギュラ管Paが位置しており、各鋸刃A
1,A2,B1,B2は実線が切削開始前の位置、想像線がパ
イプ外周面よりパイプの内厚を切削し、鋸刃外周がパイ
プ内面まで到着した後、切削余裕分をさらに内面まで数
mm切削した状態を示している。この場合の揺動角θaと
θbは異なるが、本実施例では揺動モータA,Bが互い
に独立した駆動源であるので、このような対応が可能で
ある。
FIG. 2 shows saw blades A1, A2, B in the above embodiment.
FIG. 3 is an explanatory diagram showing the arrangement of 1, B2 and the swing angles θa, θb.
At the center is a rectangular angular tube Pa, and each saw blade A
1, A2, B1, and B2 indicate the solid line before starting cutting, and the imaginary line cuts the inner thickness of the pipe from the outer peripheral surface of the pipe.
This shows a state in which mm has been cut. In this case, the swing angles θa and θb are different, but in the present embodiment, such a correspondence is possible because the swing motors A and B are independent drive sources.

【0012】図3は鋸刃a1がレクトアンギュラ管Paの短
辺を切削する場合の動作を示している。符号は切削開
始前の位置を示しており、符号はパイプ内面から数mm
深く切削余裕分を含めて切削した位置を示しており、こ
の間の切削動作は鋸刃A1を自転させながら、揺動モータ
Aによりカッターヘッドa10を揺動させることにより行
う。ついで面板1を90度回転させる。回転開始位置がI
位置であり、途中のII位置を経てIII 位置まで回転させ
る。この間、カッターヘッド10aの揺動を必要に応じて
行う。たとえば以降少し揺動角を小さくし、再び大き
くして位置を通過させ、位置に至る前に徐々に揺動
角を大きくする。この面板1の回転により鋸刃A1は位
置から位置を経て位置に至る。この間に高速で自転
している鋸刃A1によりレクトアンギュラ管Paの短辺が切
断される。短辺の切断が完了すると、(この時点では面
板1上の揺動軸a11がIII 位置まで回転している)、再
び揺動モータAを駆動してカッターヘッドa10を初期位
置まで復帰させる。これが位置である。図3では鋸刃
ーA1の動きしか示していないが、反対側短辺を切断する
鋸刃ーA2は全く同一の軌跡を描くことになる。また長辺
を切削する鋸刃ーB1,B2は異なる跡を描くが動作は同
じ要領であり長辺の一端から他端までを切削する。これ
により、レクトアンギュラ管Paの切削が完了する。
FIG. 3 shows the operation when the saw blade a1 cuts the short side of the rectangular rectangular tube Pa. The symbol indicates the position before the start of cutting, and the symbol is several mm from the inner surface of the pipe.
A cutting position including a deep cutting margin is shown. The cutting operation during this time is performed by oscillating the cutter head a10 by the oscillating motor A while rotating the saw blade A1. Then, the face plate 1 is rotated 90 degrees. Rotation start position is I
Rotate to the III position via the II position on the way. During this time, the cutter head 10a is swung as necessary. For example, thereafter, the swing angle is slightly reduced, then increased again to pass through the position, and the swing angle is gradually increased before reaching the position. The rotation of the face plate 1 causes the saw blade A1 to move from position to position. During this time, the short side of the rectangular tube Pa is cut by the saw blade A1 rotating at high speed. When the cutting of the short side is completed (at this time, the swing shaft a11 on the face plate 1 has been rotated to the position III), the swing motor A is driven again to return the cutter head a10 to the initial position. This is the position. In FIG. 3, only the movement of the saw blade A1 is shown, but the saw blade A2 that cuts the opposite short side will draw exactly the same trajectory. The saw blade over B1, B2 of cutting the long sides are cut from one end of the located long side in but work the same way draw different trajectories to the other. This completes the cutting of the rect angular tube Pa.

【0013】図4は上記の切削動作における鋸刃ーA1と
鋸刃ーB1の軌跡を示すものであり、符号からの間に
レクトアンギュラ管Paのコーナ部に切り込みが行なわ
れ、符号〜の間に短辺と長辺が切り進められるもの
である。なお、図示していないが鋸刃ーA2の軌跡はA1と
同様であり、鋸刃ーB2の軌跡はB1と同様である。このよ
うに切削軌跡が互いに異なる鋸刃ーA1,A2の組と、鋸刃
ーB1,B2の組によって、長辺と短辺の長さが異なるレク
トアンギュラ管の切削が行えることになるのである。
FIG. 4 shows the trajectory of the saw blade A1 and the saw blade B1 in the above-described cutting operation. The short side and the long side are cut forward. Although not shown, the locus of the saw blade A2 is the same as A1, and the locus of the saw blade B2 is the same as B1. In this way, the set of saw blades A1 and A2 and the set of saw blades B1 and B2 with different cutting trajectories can cut a rectangular rectangular tube with different long and short sides. .

【0014】もちろん、本実施例の切断機では鋸刃ーA
1,A2の組とB1,B2の組の揺動角θa,θb を同じくする
ことも可能であり、そうした場合は、角管や丸管の切断
が行えることももちろんである。図5は1つの鋸刃が角
管Paを切断する場合の軌跡を示しており、図6は1つの
鋸刃が丸管Pcを切断する場合の軌跡を示している。角管
Pbおよび丸管Pcいずれの場合も、符号からで切り込
みが行なわれ、からを経ての間に管壁が切り進め
られ、からの動きで鋸刃が元の位置へ復帰する。そ
して、4個の鋸刃の軌跡は全て同一であり、そのことに
より角管Pbと丸管Pcの切断が行えることになる。
Of course, in the cutting machine of this embodiment, the saw blade A
The swing angles θa and θb of the set A1, A2 and the set B1, B2 can be the same, and in such a case, it is of course possible to cut a square tube or a round tube. FIG. 5 shows a locus when one saw blade cuts the square tube Pa, and FIG. 6 shows a locus when one saw blade cuts the round tube Pc. Square tube
In both the case of Pb and the round tube Pc, a cut is made from the reference numeral, and the tube wall is cut in advance after passing through, and the saw blade returns to the original position by the movement from behind. The trajectories of the four saw blades are all the same, so that the square tube Pb and the round tube Pc can be cut.

【0015】[0015]

【発明の効果】請求項1の発明では、第1揺動機構の第
1の揺動モータと第2揺動機構の第2の揺動モータは互
いに独立しているので、一対のカッターヘッドの揺動角
と他の一対のカッターヘッドの揺動角を、前者は大きく
後者は小さくというように揺動角を変えることができ
る。このため、面板を90度回転させたときレクトアン
ギュラ管の長辺を切断できる位置へ一対のカッターヘッ
ドを位置させ、短辺を切断できる位置へ他の一対のカッ
ターヘッドを位置させることができるので、レクトアン
ギュラ管の切断が可能となる。丸管や角管の場合は、4
個の鋸刃を同一軌跡で揺動させればよい。 請求項2の発
明によれば、揺動軸内に駆動軸を挿入した構成により、
スペースをとらないコンパクトな駆動系とすることがで
きる。
According to the first aspect of the present invention, the first swing mechanism has the
The first oscillating motor and the second oscillating motor of the second oscillating mechanism are mutually
Because they are independent, the swing angle of a pair of cutter heads
And the swing angle of the other pair of cutter heads
The latter can change the swing angle to be small.
You. Therefore, when the face plate is rotated 90 degrees,
Move the pair of cutter heads to a position where the long side of the
The other side of the bracket to a position where the short side can be cut.
The head can be positioned,
It is possible to cut the Gyula tube. 4 for round or square tubes
What is necessary is just to swing the saw blades along the same locus. Claim 2
According to Ming, the configuration in which the drive shaft is inserted inside the swing shaft,
A compact drive system that does not take up space
Wear.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施例に系る4刃式鋼管切断機の構
成説明図である。
FIG. 1 is a configuration explanatory view of a four-flute steel pipe cutting machine according to one embodiment of the present invention.

【図2】鋸刃の配置と揺動角の説明図である。FIG. 2 is an explanatory diagram of an arrangement of a saw blade and a swing angle.

【図3】鋸刃A1によるレクトアンギュラ管の切削動作の
説明図である。
FIG. 3 is an explanatory view of a cutting operation of a rect angular tube by a saw blade A1.

【図4】レクトアンギュラ管の切削時における鋸刃A1,
B1の軌跡図である。
FIG. 4 shows saw blades A1,
It is a locus diagram of B1.

【図5】角管のの切削時における鋸刃A1,B1の軌跡図で
ある。
FIG. 5 is a trajectory diagram of saw blades A1 and B1 when cutting a square tube.

【図6】丸管のの切削時における鋸刃A1,B1の軌跡図で
ある。
FIG. 6 is a trajectory diagram of saw blades A1 and B1 at the time of cutting a round tube.

【符号の説明】[Explanation of symbols]

1 面板 A1 鋸刃 A2
鋸刃 B1 鋸刃 B2 鋸刃 a1
0 カッターヘッド a20 カッターヘッド b10 カッターヘッド b2
0 カッターヘッド a11 揺動軸 a12 揺動軸 b1
1 揺動軸 b12 揺動軸 A 揺動モータ B
揺動モータ
1 face plate A1 saw blade A2
Saw blade B1 Saw blade B2 Saw blade a1
0 Cutter head a20 Cutter head b10 Cutter head b2
0 Cutter head a11 Swing axis a12 Swing axis b1
1 Swing axis b12 Swing axis A Swing motor B
Rocking motor

フロントページの続き (58)調査した分野(Int.Cl.6,DB名) B23D 45/10 B23D 45/12 Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) B23D 45/10 B23D 45/12

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】被切断管の中心と同軸まわりに回転自在な
面板と、基端に揺動軸を有し先端に鋸刃を回転自在に軸
支した4個のカッターヘッドとからなり、前記4個のカ
ッターヘッドの揺動軸を面板上において円周方向90度間
隔で揺動自在に軸支した4刃式鋼管切断機であって、 前記4個のカッターヘッドのうち、前記面板の回転中心
において点対称となる一対のカッターヘッドの組を同調
して揺動させる第1揺動機構と、他の一対のカッターヘ
ッドの組を同調して揺動させる第2揺動機構設けられ
ており、 前記第1揺動機構が、前記一対のカッターヘッドにおけ
る一対の揺動軸にそれぞれ取付けたピニオンに噛合する
外歯歯車と、該外歯歯車を回転駆動する第1の揺動モー
タとからなり、 前記第2揺動機構が、前記他の一対のカッターヘッドに
おける一対の揺動軸にそれぞれ取付けたピニオンに噛合
すると共に前記外歯歯車と同心かつ外側に配置された内
歯歯車と、該内歯歯車を回転駆動する第2の揺動モータ
とからなる ことを特徴とする4刃式鋼管切断機。
1. A rotatable rotatable coaxially with the center of a pipe to be cut.
Face plate and swing shaft at base end
It consists of four supported cutter heads, and the four
Between the swing axis of the cutter head and the face plate in the circumferential direction at 90 degrees.
A four-blade steel pipe cutting machine pivotally supported at an interval, wherein a rotation center of the face plate among the four cutter heads is provided.
Of a pair of cutter heads that are point symmetrical at
To the other pair of cutters
Swing mechanism for synchronizing and swinging a set of padsButEstablishmentIs
And The first swinging mechanism is provided between the pair of cutter heads.
Meshes with pinions attached to a pair of swing shafts
An external gear, and a first swinging mode that rotationally drives the external gear.
And The second swinging mechanism is connected to the other pair of cutter heads.
With pinions mounted on a pair of swing shafts
And an inner gear arranged concentrically with the outer gear and outside.
Tooth gear and second swing motor for driving the internal gear in rotation
Consisting of A four-cut steel pipe cutting machine, characterized in that:
【請求項2】記鋸刃の回転駆動機構が、前記4個のカ
ッターヘッドのそれぞれの揺動軸内に回転自在に挿入さ
れている鋸刃回転用の駆動軸にそれぞれピニオンを取付
け、該4個のピニオンに同時に噛合する歯車と、該歯車
を回転駆動する鋸刃駆動モータとからなることを特徴と
する請求項1記載の4刃式鋼管切断機。
Wherein prior Kinokoha of the rotation drive mechanism, mounted respectively pinion on the drive shaft for the saw blade rotation is freely inserted the rotation to the respective swing within shaft of the four cutter head, said The four-blade steel pipe cutting machine according to claim 1, comprising a gear that meshes with the four pinions simultaneously, and a saw blade drive motor that rotationally drives the gears.
JP34746693A 1993-12-25 1993-12-25 4-blade steel pipe cutting machine Expired - Lifetime JP2939409B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34746693A JP2939409B2 (en) 1993-12-25 1993-12-25 4-blade steel pipe cutting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34746693A JP2939409B2 (en) 1993-12-25 1993-12-25 4-blade steel pipe cutting machine

Publications (2)

Publication Number Publication Date
JPH07185931A JPH07185931A (en) 1995-07-25
JP2939409B2 true JP2939409B2 (en) 1999-08-25

Family

ID=18390417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34746693A Expired - Lifetime JP2939409B2 (en) 1993-12-25 1993-12-25 4-blade steel pipe cutting machine

Country Status (1)

Country Link
JP (1) JP2939409B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6072971B1 (en) * 2016-09-16 2017-02-01 株式会社中田製作所 Pipe cutting machine
WO2018052069A1 (en) * 2016-09-16 2018-03-22 株式会社中田製作所 Pipe cutting machine
JPWO2018052069A1 (en) * 2017-01-20 2019-10-10 株式会社中田製作所 Pipe cutting machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5430289B2 (en) * 2009-08-18 2014-02-26 株式会社中田製作所 Cutting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6072971B1 (en) * 2016-09-16 2017-02-01 株式会社中田製作所 Pipe cutting machine
WO2018052069A1 (en) * 2016-09-16 2018-03-22 株式会社中田製作所 Pipe cutting machine
JPWO2018052069A1 (en) * 2017-01-20 2019-10-10 株式会社中田製作所 Pipe cutting machine
JP6993341B2 (en) 2017-01-20 2022-01-13 株式会社中田製作所 Tube cutting machine

Also Published As

Publication number Publication date
JPH07185931A (en) 1995-07-25

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