JPH0446691B2 - - Google Patents
Info
- Publication number
- JPH0446691B2 JPH0446691B2 JP60214899A JP21489985A JPH0446691B2 JP H0446691 B2 JPH0446691 B2 JP H0446691B2 JP 60214899 A JP60214899 A JP 60214899A JP 21489985 A JP21489985 A JP 21489985A JP H0446691 B2 JPH0446691 B2 JP H0446691B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- cut
- revolution
- arm
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003801 milling Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 101100008044 Caenorhabditis elegans cut-1 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Description
【発明の詳細な説明】
（関連技術分野）
本発明は管切断機に関するものである。さらに
詳細に言えば、ミーリングカツタを自転させ乍ら
被切断管のまわりに公転させる形式の管切断機の
改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Related Technical Field) The present invention relates to a tube cutting machine. More specifically, the present invention relates to an improvement of a tube cutting machine in which a milling cutter is rotated and revolves around a tube to be cut.
（先行技術）
従来固定された管を切断する方法として、(1)ロ
ータリーデイスクカツターによる切断、(2)大径フ
リクシヨンソー、等が知られていた。(Prior Art) Conventionally known methods for cutting fixed pipes include (1) cutting with a rotary disc cutter, (2) large diameter friction saw, and the like.
(1)のロータリーデイスクカツターによる切断は
固定丸管のまわりに複数個のロータリーデイスク
カツターを自転しつつ公転させて、加圧し乍ら切
断するものである。この方法は管端の切断面が塑
性変形を起すこと、厚肉管や高張力管の場合にデ
イスクカツターの損傷が著しい等の欠点があつ
た。 (1) Cutting with a rotary disk cutter involves rotating and revolving a plurality of rotary disk cutters around a fixed round tube and cutting while applying pressure. This method has disadvantages such as plastic deformation of the cut surface at the end of the tube and significant damage to the disk cutter in the case of thick-walled tubes or high-tensile tubes.
(2)の大径フリクシヨンソーによる切断において
は、１個の大径フリクシヨンソーによつて切断す
るもの故、大騒音を発すること、能力的に劣る等
の欠点があつた。 (2) Cutting with a large-diameter friction saw has disadvantages such as making a lot of noise and being inferior in performance because the cutting is performed with a single large-diameter friction saw.
これら管の切断法の欠点を改良したものとして
本出願人は先に特開昭51−148890合により「ミー
リングによる管切断及び開先加工装置」と題する
発明を開示した。これは被切断管の中心に向う切
込送り機構をそなえた複数個のミリングカツタを
被切断管に対し相対的に回動可能にしたものであ
る。 In order to improve the drawbacks of these tube cutting methods, the present applicant previously disclosed an invention entitled ``Pipe cutting and beveling apparatus by milling'' in Japanese Patent Application Laid-Open No. 148890/1983. This is a device in which a plurality of milling cutters equipped with a cutting feed mechanism directed toward the center of the tube to be cut can be rotated relative to the tube to be cut.
このような構造では回転ドラム内に切込送り用
モータやカツタ自転用モータ等多数のモータを装
備するので、回転ドラムを支持するフレームは剛
性の高いものを必要とすること、同じく回転ドラ
ム内に多数のモータが装備するので、これらモー
タへの給電機構が複雑となること、さらには複数
個のミーリングカツタを別個のモータで自転駆動
するので全カツタを駆動するためのモータを同期
作動させる電気的同期手段が必要となり、その制
御系が複雑となること……等の問題があつた。 In this type of structure, the rotary drum is equipped with many motors such as a cutting feed motor and a cutter rotation motor, so the frame that supports the rotary drum needs to be highly rigid. Since it is equipped with a large number of motors, the power supply mechanism for these motors is complicated.Furthermore, since multiple milling cutters are driven by separate motors, it is difficult to operate the motors synchronously to drive all the cutters. There were problems such as the need for synchronization means and the complexity of the control system.
本出願人はこれをさらに改良し、複数個のミー
リングカツタの同期自転は遊星歯車機構を介し
て、定置されている単一のモータで行い、切込み
送り及び公転切削はカツタヘツドが支持された回
転リングと該回転リングの側方に配設したリング
ギヤの単独回転作動及び一体的回転作動で行なう
ようにしたものとし、これにより公転式ミーリン
グカツタを備えた鋼管切断機の簡素化したものを
特開昭59−69213号で開示した。 The present applicant has further improved this, and the synchronous rotation of multiple milling cutters is performed by a single fixed motor via a planetary gear mechanism, and the cutting feed and revolution cutting are performed by a rotating ring on which the cutter head is supported. A simplified steel pipe cutting machine equipped with a revolving milling cutter was developed in Japanese Patent Application Laid-Open No. 2003-100001. Disclosed in No. 59-69213.
この改良された発明により、管切断機が機構的
に簡略化され、大巾なコストダウンが可能となつ
たが、丸パイプの切断を目的とするもの故、角パ
イプ等の切断時の制御は容易でなかつた。 With this improved invention, the pipe cutting machine was mechanically simplified and costs could be reduced significantly, but since the purpose was to cut round pipes, the control when cutting square pipes, etc. It wasn't easy.
（発明の解決しようとする課題）
被切断管に対して、小径のミーリングカツタが
公転と揺動運動を行ない、かつ自転するミーリン
グカツタを持つ切断機に於て、丸管・角管とその
他の管の断面形状にそつて管の肉厚部のみを切断
し、かつ鋸刃１刃当りの切削厚さがほぼ一定とな
るような鋸刃の位置を与えるべく、公転機構と揺
動機構を夫々連動制御させる制御方法を提供する
ことを課題とする。(Problem to be solved by the invention) In a cutting machine having a milling cutter that rotates and revolves around and oscillates with respect to the pipe to be cut, it is necessary to cut round pipes, square pipes and other pipes. In order to cut only the thick part of the pipe along the cross-sectional shape of the pipe and to provide the saw blade with a position where the cutting thickness per saw blade is approximately constant, a revolution mechanism and a swing mechanism are installed respectively. An object of the present invention is to provide a control method for interlocking control.
（発明の課題と解決手段）
被切断管に対して公転と揺動運動を行なうアー
ムを有し、かつアームの遊端に回転するミーリン
グカツタを持つ切断機に於て、予め被切断管の外
形状、肉厚、最大切削厚さ、鋸径をコンピユータ
に入力し、該データに基いてアームの公転位置
（原点位置からの公転角度）とその時の公転速度
及びアームの公転位置に対応する揺動角度とその
ときの揺動速度を連動制御して最大切削厚さと鋸
刃の被切断管内側への突出量を常に略一定にして
切断するようにした。(Problems to be solved by the invention and means for solving the problem) In a cutting machine having an arm that revolves and swings relative to the pipe to be cut, and a milling cutter that rotates at the free end of the arm, the outside of the pipe to be cut is cut in advance. The shape, wall thickness, maximum cutting thickness, and saw diameter are input into the computer, and based on the data, the arm's revolution position (revolution angle from the origin position), the revolution speed at that time, and the swing corresponding to the arm's revolution position are calculated. By controlling the angle and the swinging speed in conjunction with each other, the maximum cutting thickness and the amount of protrusion of the saw blade into the inside of the pipe to be cut are always kept approximately constant during cutting.
（発明の実施例）
一般のミーリング切削で厚さｔの板を切削する
場合（第４図参照）、鋸１の一刃当りの最大切削
厚さhtが最適かつ一定となる様、送り量Sz（mm／
rev・刃）を与えている。この時切削長さｌは一
定である。第５図の如く丸管を大径鋸１′で切断
する場合、一定の送り量Szに対し、切削厚さht
は常に同一となるが、切削長（AA′，BB′，
CC′＋C″Cなど）及び切削面積（AA′B′B、
CC′D′D＋C″CＤD″など）が変化し、刃にと
つて定負荷切削とならない。また管２に対して大
径の鋸１′が必要であり（一般に管径の３倍程度
を必要とする）、重くて、しかも高価な鋸となら
ざるを得ない。(Embodiment of the invention) When cutting a plate of thickness t by general milling cutting (see Fig. 4), the feed amount Sz is set so that the maximum cutting thickness ht per blade of the saw 1 is optimal and constant. (mm/
rev/blade). At this time, the cutting length l is constant. When cutting a round tube with a large-diameter saw 1' as shown in Fig. 5, the cutting thickness ht is
are always the same, but the cutting length (AA′, BB′,
CC′+C″C, etc.) and cutting area (AA′B′B,
(CC′D′D+C″CDD″, etc.) will change, and the cutting load will not be constant for the blade. Furthermore, a saw 1' having a large diameter relative to the pipe 2 is required (generally about three times the diameter of the pipe), making the saw heavy and expensive.
本発明の基本原理は第１図或いは第２図に示す
ごとく、管の肉厚部を第４図の板材板厚ｔとみて
切削を行おうとするものである。 The basic principle of the present invention, as shown in FIG. 1 or 2, is to perform cutting by considering the thick part of the tube as the plate thickness t in FIG. 4.
第１図で、２′は被切断角管である。端的に言
えば、本発明は第１図、第２図のδ1，δ2……で示
すようなアーム３の枢着部の公転位置（原点位置
からの公転角度）とその時の公転速度ｖ及びアー
ム３の公転位置に対応する揺動角γ1，γ2……と、
その時の揺動速度を連動制御するもので、最大切
削厚さhtが常に一定で、かつ鋸刃の被切断管内側
への突出代Ｃも一定となるように制御して円管に
限らず、角管その他の管を切断する方法である
（第２図に示すように被切断管が丸管の場合には
アーム３の公転位置に対応する揺動角γの値が常
に一定となる）。 In FIG. 1, 2' is a square tube to be cut. To put it simply, the present invention is based on the revolution position (revolution angle from the origin position) of the pivoting part of the arm 3 as shown by δ 1 , δ 2 . . . in FIGS. 1 and 2 and the revolution speed v at that time. and the swing angles γ 1 , γ 2 ... corresponding to the revolution position of the arm 3,
The oscillating speed at that time is controlled in conjunction so that the maximum cutting thickness ht is always constant and the protrusion C of the saw blade into the inside of the tube to be cut is also constant. This is a method for cutting square tubes and other tubes (as shown in FIG. 2, when the tube to be cut is a round tube, the value of the swing angle γ corresponding to the revolution position of the arm 3 is always constant).
この制御方法を実施するには、被切断管１の外
形状、肉厚、最大切削厚さ、鋸径をコンピユータ
に入力し、これらのデータに基いて管を切断する
為の最適切削条件（アーム３の枢着部の公転位置
（原点位置ａからの公転角度）とその時の公転速
度、アーム３の公転位置に対応する揺動角度とそ
の時の揺動速度）を計算して、第３図に一例とし
て示す如き制御回路に基いて管切断の数値制御を
行なうようになつている。 To implement this control method, the external shape, wall thickness, maximum cutting thickness, and saw diameter of the pipe to be cut 1 are input into the computer, and based on these data, the optimum cutting conditions (arm arm Calculate the revolution position (revolution angle from the origin position a) of the pivot part 3 and the revolution speed at that time, the swing angle corresponding to the revolution position of arm 3 and the swing speed at that time), and show them in Figure 3. Numerical control of tube cutting is performed based on a control circuit as shown by way of example.
例えば公転中心をＱ、鋸刃中心を０1，０2、ア
ーム３の揺動中心を０2′，０2′とすれば、最大切
削厚さhtを得るためには水平方向にSzだけ鋸刃
が移動しなければならない。ここで突出代Ｃも一
定にする必要があることから0102＝Szとなる。ま
ず010′1Q＝γ1を設定した後鋸刃中心O1をSzだけ水
平移動させO2に位置させるためには公転角度を
δ1からδ2に変え、揺動角度をγ1からγ2に変えれば
よい。ここで、δ2，γ2は公転半径一定、すなわち
Q0′1＝Q0′2、揺動半径一定、すなわち0101′＝
020′2、および0102＝Szから容易に算出可能であ
る。このようにして得られた公転位置と公転速度
あるいは揺動角度との関係を予め設定しておき、
切断機コントローラにメモリとして保管してお
き、それに基づき各駆動モータを制御している。 For example, if the revolution center is Q, the saw blade center is 0 1 , 0 2 , and the swing center of arm 3 is 0 2 ′, 0 2 ′, then in order to obtain the maximum cutting thickness ht, the saw blade must be cut by Sz in the horizontal direction. The blade must move. Here, since the protrusion distance C also needs to be constant, 0 1 0 2 =Sz. First, after setting 0 1 0 ' 1 Q = γ 1 , in order to horizontally move the saw blade center O 1 by Sz and position it at O 2 , change the revolution angle from δ 1 to δ 2 and change the swing angle to γ 1. You can change it from to γ 2 . Here, δ 2 and γ 2 are constant radius of revolution, i.e.
Q0′ 1 =Q0′ 2 , constant swing radius, i.e. 0 1 0 1 ′=
It can be easily calculated from 0 2 0′ 2 and 0 1 0 2 =Sz. The relationship between the revolution position obtained in this way and the revolution speed or swing angle is set in advance,
It is stored in the cutting machine controller as a memory, and each drive motor is controlled based on it.
（発明の効果）
以上の如く本発明は被切断管に対して、小径の
ミーリングカツタが公転と揺動運動を行なうアー
ムをもち、かつアームの遊端に回転するミーリン
グカツタをもつ切断機に於て、予め被切断管の外
形状、肉厚、最大切削厚さ、鋸径をコンピユータ
に入力し、該データに基いてアームの公転位置
（原点位置からの公転角度）とその時の公転速度
及びアームの公転位置に対応する揺動角とそのと
きの揺動速度を連動制御して最大切削厚さと鋸刃
の被切断管内側への突出量を常に略一定にして切
断するようにした。(Effects of the Invention) As described above, the present invention provides a cutting machine having an arm in which a small-diameter milling cutter performs revolving and oscillating motion with respect to a pipe to be cut, and a rotating milling cutter at the free end of the arm. The external shape, wall thickness, maximum cutting thickness, and saw diameter of the pipe to be cut are entered into the computer in advance, and based on this data, the arm's revolution position (revolution angle from the origin position), the revolution speed at that time, and the arm are calculated. The swing angle corresponding to the revolution position and the swing speed at that time are controlled in conjunction with each other, so that the maximum cutting thickness and the amount of protrusion of the saw blade into the inside of the pipe to be cut are always kept substantially constant during cutting.
この方法によれば、管の肉厚にそつと切断を行
なうので、小径鋸が使用できる。又鋸刃取付部の
剛性が増し、鋸刃寿命が大となる。更に一刃当り
送り量（Sz）及び被切断管内側への突出量が一
定となり、安定した切削負荷のもとに長期間にわ
たつて軽快な切断作用が維持できる。 According to this method, a small-diameter saw can be used because the tube is cut gently through its wall thickness. In addition, the rigidity of the saw blade mounting part is increased and the life of the saw blade is extended. Furthermore, the feed rate (Sz) per blade and the amount of protrusion into the tube to be cut are constant, and a light cutting action can be maintained over a long period of time under a stable cutting load.
又、予め被切断管の外形状、肉厚、最大切削厚
さ、鋸径をコンピユーターに入力し、該データに
基づいて、アームの公転位置（原点位置からの公
転角度）とその時の公転速度及びアームの公転位
置に対応する揺動角とその時の揺動速度を連動制
御してミーリングカツターの移動経路を設定する
ようにしているので、設定がすこぶる容易とな
り、被切断管を断面形状の異なるもの（管）に変
更する際、好適に対処することができる大なる効
果がある。 In addition, the external shape, wall thickness, maximum cutting thickness, and saw diameter of the pipe to be cut are input into the computer in advance, and based on this data, the revolution position of the arm (revolution angle from the origin position), the revolution speed at that time, and Since the movement path of the milling cutter is set by controlling the swing angle corresponding to the revolution position of the arm and the swing speed at that time, the setting is extremely easy, and it is possible to cut pipes with different cross-sectional shapes. There is a great effect that can be dealt with suitably when changing to a pipe.
第１図は被切断管が角管の場合の該角管と鋸刃
との切断時における相対位置関係を説明する図。
第２図は被切断管が円管の場合の該円管と鋸との
切断時における相対位置関係を説明する図。第３
図は本発明に基く制御方法の一実施例回路図。第
４図は丸鋸で平板を切削する場合の切削状態の説
明図。第５図は大径丸鋸で円管を切断する場合の
切削状態の説明図。
図において；１，１′……鋸、２，２′……被切
断管。
FIG. 1 is a diagram illustrating the relative positional relationship between a square tube and a saw blade during cutting when the tube to be cut is a square tube.
FIG. 2 is a diagram illustrating the relative positional relationship between a circular tube and a saw during cutting when the tube to be cut is a circular tube. Third
The figure is a circuit diagram of an embodiment of the control method according to the present invention. FIG. 4 is an explanatory diagram of the cutting state when cutting a flat plate with a circular saw. FIG. 5 is an explanatory diagram of the cutting state when cutting a circular pipe with a large-diameter circular saw. In the figure: 1, 1'...Saw, 2, 2'...Pipe to be cut.
Claims (1)
アームを有し、かつアームの遊端に回転する小径
のミーリングカツタを持つ切断機に於て、予め被
切断管の外形状、肉厚、最大切削厚さ、鋸径をコ
ンピユータに入力し、該データに基いて、アーム
の公転位置（原点位置からの公転角度）とその時
の公転速度及びアームの公転位置に対応する揺動
角度とそのときの揺動速度を連動制御して最大切
削厚さ（ht）と鋸刃の被切断管内側への突出量Ｃ
を常に略一定にして切断するようにしたことを特
徴とする管の切断制御方法。1. In a cutting machine that has an arm that revolves and oscillates with respect to the pipe to be cut, and a small-diameter milling cutter that rotates at the free end of the arm, the outer shape and wall thickness of the pipe to be cut are determined in advance. , the maximum cutting thickness, and the saw diameter are input into the computer, and based on the data, the arm's revolution position (revolution angle from the origin position), the revolution speed at that time, the swing angle corresponding to the arm revolution position, and its The maximum cutting thickness (ht) and the amount of protrusion of the saw blade into the tube to be cut C are
A method for controlling the cutting of a pipe, characterized in that the cutting is performed while keeping the constant constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21489985A JPS6274525A (en) | 1985-09-30 | 1985-09-30 | Control method for pipe cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21489985A JPS6274525A (en) | 1985-09-30 | 1985-09-30 | Control method for pipe cutting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6274525A JPS6274525A (en) | 1987-04-06 |
| JPH0446691B2 true JPH0446691B2 (en) | 1992-07-30 |
Family
ID=16663403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21489985A Granted JPS6274525A (en) | 1985-09-30 | 1985-09-30 | Control method for pipe cutting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6274525A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03221311A (en) * | 1990-01-23 | 1991-09-30 | Mitsubishi Heavy Ind Ltd | Mealing type travelling steel pipe cutting machine |
| UA110228C2 (en) * | 2010-12-20 | 2015-12-10 | Rockwool Int | Device and method of transverse cutting of continuous progress web |
| JP5474124B2 (en) * | 2012-04-19 | 2014-04-16 | ナカジマ鋼管株式会社 | Steel pipe processing equipment |
| EP3275581A1 (en) * | 2016-07-26 | 2018-01-31 | Aisapack Holding SA | Rotary knife for packaging-producing machine and method using said knife |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51101285A (en) * | 1975-03-05 | 1976-09-07 | Unitex Corp | KAKUGATASHI KANNOSETSUDANHOHO OYOBI SOCHI |
| JPS5969213A (en) * | 1982-09-29 | 1984-04-19 | Sumitomo Heavy Ind Ltd | Steel pipe cutting machine equipped with milling cutter revolving around cut pipe |
| JPS59201718A (en) * | 1983-04-28 | 1984-11-15 | Amada Co Ltd | Cutting control process for sawing machine |
-
1985
- 1985-09-30 JP JP21489985A patent/JPS6274525A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51101285A (en) * | 1975-03-05 | 1976-09-07 | Unitex Corp | KAKUGATASHI KANNOSETSUDANHOHO OYOBI SOCHI |
| JPS5969213A (en) * | 1982-09-29 | 1984-04-19 | Sumitomo Heavy Ind Ltd | Steel pipe cutting machine equipped with milling cutter revolving around cut pipe |
| JPS59201718A (en) * | 1983-04-28 | 1984-11-15 | Amada Co Ltd | Cutting control process for sawing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6274525A (en) | 1987-04-06 |
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