JPS6213219A - Shaping method of pipe cut end and shaping punch used for this method - Google Patents

Abstract

PURPOSE:To execute continuously cutting of a pipe, removal of a burr and a formation of a flare, and to improve the work efficiency by turning and inserting a shaping punch having a cutting edge part and a flare formed part in the tip part, into a cut end of the pipe. CONSTITUTION:A cutting edge aprt 11a having the same diameter as the inside diameter of a pipe P11 is provided on the tip part of a shaping punch 1a, also a flare formed part 13a is formed by being continued from said part, and it is provided so as to be turnable by a pivotally moving shaft 12a. When executing the working, the pipe P11 is brought to chucking Ch and cut by a cutter Cu, and thereafter, the cutting edge part 11a is turned and inserted into the inner wall and a burr is removed, and subsequently, a flare is formed by pressing the formed part 13a. Accordingly, a work speed becomes remarkably higher than a conventional work which has been executed separately, and also one worker will suffice, and the work efficiency can be improved.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、任意のパイプをローラカッタにより所望長に
切断した際に、該パイプの切断端内側へ突成されたバリ
の除去に続けて、該切断端へ任意フレアを形成しうべく
なしたパイプ切断端の整形方法とこの方法に使用する整
形用パンチに関する。Detailed Description of the Invention (Industrial Application Field) The present invention provides a method for cutting an arbitrary pipe to a desired length using a roller cutter, and then removing burrs that are formed inside the cut end of the pipe. This invention relates to a method for shaping a cut end of a pipe to form an arbitrary flare at the cut end, and a shaping punch used in this method.

（従来の技術） 各種パイプは、いまや各種機械や各種装置等の重要な血
管的機能を達せしめ、したがってその使用も多岐多様に
わたっている。そのため、膨大な数量の各種形態、大き
さのパイプを、所望長に切断し、所望形状等に曲げ、所
望場所へ配設し、さらに所望のパイプ同志等を接続しな
ければならない。しかし、とりわけパイプは切断するこ
とにより、該切断面に必ずバリが発生し、該バリを除去
せず使用するならば、パイプ内の流路抵抗が増して流量
が所要値に達しなかったり、また流液中にバリが剥落し
て流路が阻水されたりして内部を傷つけたり、さらに接
続部分で液洩れを起こしたりするので、バリは従来から
も必ず除去して使用していた。また、パイプの接続部分
にフレアを形成して接続を容易にし、かつ、液洩れ等を
防止することも従来から行なわれていた。しかし、従来
の技術ではバリ除去と、フレア形成を別々に行なわなけ
ればならず、パイプを大量整形するのに阻害要因となっ
ていた。(Prior Art) Various types of pipes now perform important vascular functions in various machines and devices, and therefore, their uses are wide-ranging. Therefore, a huge number of pipes of various shapes and sizes must be cut to desired lengths, bent into desired shapes, etc., placed in desired locations, and furthermore, desired pipes must be connected to each other. However, especially when a pipe is cut, burrs are inevitably generated on the cut surface, and if the burrs are not removed during use, the flow resistance within the pipe increases and the flow rate may not reach the required value. In the past, burrs have always been removed before use, as they can fall off in the flowing liquid and block the flow path, damaging the internal parts and causing liquid leaks at the connection parts. It has also been conventional practice to form flares at the connecting portions of pipes to facilitate connection and prevent liquid leakage. However, in the conventional technology, burr removal and flare formation had to be performed separately, which was an impediment to large-scale shaping of pipes.

（発明が解決しようとする問題点） そこで本発明は、上記従来技術において、別々の工程で
数度に分けて行なっていた切断、バリ除去、フレア成形
を連続してなしうべき方法とこの方法に使用する整形用
パンチの開発を目的とする。(Problems to be Solved by the Invention) Therefore, the present invention provides a method in which cutting, burr removal, and flare forming, which were performed in several separate steps in the above-mentioned prior art, are performed continuously, and this method. The purpose is to develop a punch for shaping.

（問題点を解決するための手段） すなわち第一の発明は、任意のパイプをチャッキング等
で保持した上ローラカッタを用いて所望長に切断する工
程と、被整形パイプの切断端よりこれの内壁に、先端部
を鋭角状とした整形用パンチの切刃部を接せしめて回動
させつつ押入して、前記所望長等に切断した際に切断端
内壁へ突成したバリを除去する工程と、該工程にそのま
ま続けて、前記整形用パンチの成形部で回動させつつ押
圧して、任意形状のフレアを形成させる工程とよりなる
整形方法であり、第二の発明は、この前記方法を実施す
るためのものであって、被整形パイプ内壁径を外径とし
、該内壁に突成されたバリを除去しうべく先端を鋭角状
とした切刃部と、これに続けて所望角で外径方向へ拡開
され、該切断端へ押圧して任意フレアを形成しうべくな
っている成形部と、枢軸部を一体に設けて回動しうべく
なした整形用パンチである。(Means for solving the problem) That is, the first invention includes a process of cutting an arbitrary pipe into a desired length using an upper roller cutter held by chucking, etc., and cutting the pipe from the cut end of the pipe to be shaped. A process of removing burrs that protrude toward the inner wall of the cut end when cutting to the desired length by bringing the cutting edge of a shaping punch with an acute-angled tip into contact with the inner wall while rotating it. and, following this step, press while rotating with the forming part of the shaping punch to form a flare of an arbitrary shape, and a second invention is a shaping method comprising the steps of: This is for carrying out the cutting process, and the outer diameter is the inner wall diameter of the pipe to be shaped, and the cutting edge part has an acute-angled tip to remove burrs formed on the inner wall, followed by a cutting edge part with a desired angle. This is a shaping punch in which a shaping part which is expanded in the outer radial direction and is pressed against the cut end to form an arbitrary flare, and a pivot part are integrally provided so as to be rotatable.

（作　　　用） 上記手段により構成される本発明は、任意パイプをチャ
ッキングのうえローラカッタで、所望長に切断した後、
該チャッキングを解除することなく、そのまま直ちに、
予め切断端に対峙して配設しである別の回転摺動軸へ、
枢軸部を介して枢着されている整形用パンチを回動しつ
つ押入し、続けて押圧するのみで、所望長への切断から
バリの除去、フレア形成までを連続してなしうる。(Function) The present invention configured by the above means chucks an arbitrary pipe and cuts it to a desired length with a roller cutter, and then
Immediately without releasing the chucking,
to another rotating and sliding shaft that is arranged in advance to face the cut end,
By simply pushing the shaping punch, which is pivotally mounted via the pivot, while rotating it and continuing to press it, it is possible to continuously perform cutting to a desired length, removing burrs, and forming flares.

（実　　施　　例） 以下１本発明の要旨をさらに明確にするため、図面を利
用して、その一実施例について説明する。(Example) In order to further clarify the gist of the present invention, one example will be described below with reference to the drawings.

第１図ないし第５図は、その第一実施例について示した
もので、第１図のように任意の整形すべきパイプＰｉは
１図示しないローラカッタ基台上においてカッタ刃Ｃｕ
位置へ切断所望位置を合わせ、チャックｃｈで固着され
て切断される。1 to 5 show the first embodiment, and as shown in FIG. 1, a pipe Pi to be arbitrarily shaped is placed on a roller cutter base (not shown) with a cutter blade Cu.
The desired cutting position is adjusted to the desired cutting position, and the material is fixed with a chuck ch and cut.

切断後第２図のようにカッタＣｕを後追させ。After cutting, let the cutter Cu follow as shown in Figure 2.

整形用パンチｌａを被整形パイプＦｉｌと軸芯を同一線
上として対峙させる。該整形用パ゛ンチｌａは、シング
ルフレア用を示し、切刃部１１ａを先頭にして枢軸部１
２ａを介して、図示しない回転摺動軸へ枢着しであるの
で、該回転摺動軸を前進せしめるならば、先ず切刃部１
１ａが切断端内側へ突成されたバリｐｂに回動接触する
が、切刃部１１ａは、すり鉢状の頭部を有する円柱状で
、その切刃径ｄｌは、被整形パイプＦｉｌの内径と同径
となされており、かつ、側面とすり鉢状の頭部面とが交
わる円周状の稜角が鋭角状の刃部１１１ａとなされてい
るので、整形用パンチｌａが回動しながらバリｐｂに接
すると、刃部１１１ａがバリｐｂの根元を押圧しながら
摺動して食い込み、第３図に示すように被整形パイプＦ
ｉｌの内壁面と面一にバリｐｂを除去する。A shaping punch la is opposed to a pipe to be shaped Fil with their axes on the same line. The shaping punch la is for a single flare, with the cutting edge 11a at the beginning and the pivot portion 1.
2a, it is pivotally connected to a rotary and sliding shaft (not shown), so when the rotary and sliding shaft is moved forward, first the cutting edge 1 is
The cutting edge 1a comes into rotational contact with the burr pb formed inward at the cut end, and the cutting edge 11a has a cylindrical shape with a mortar-shaped head, and its cutting edge diameter dl is equal to the inner diameter of the pipe to be shaped Fil. They have the same diameter, and the edge angle of the circumference where the side surface intersects with the mortar-shaped head surface forms an acute-angled blade portion 111a, so that the shaping punch la rotates while cutting the burr pb. When they come into contact, the blade part 111a slides and bites into the root of the burr pb, as shown in FIG.
The burr Pb is removed flush with the inner wall surface of the il.

さらに、整形用パンチ１ａの前進を続ける。ならば、第
３図及び第４図で示すように、切刃部１１ａの胴部から
前面を４５度の角度で外径方向後方へ、拡開状の斜面と
なっている成形面１３１ａよりなる成形部１３ａが、先
ず被整形パイプｐＨの切断端内側に接し、該切断端を斜
め外方向へ押圧するようになり、該切断端附近が塑性変
形して、第５図で示すようにシングルフレアＳＦが、バ
リルｂ除去の工程と連続して形成される。Further, the shaping punch 1a continues to move forward. In this case, as shown in FIGS. 3 and 4, the front surface from the body of the cutting edge 11a is formed of a forming surface 131a that is an inclined surface that expands toward the rear in the outer diameter direction at an angle of 45 degrees. The forming part 13a first comes into contact with the inner side of the cut end of the pipe to be shaped pH and presses the cut end diagonally outward, causing plastic deformation in the vicinity of the cut end and forming a single flare as shown in FIG. SF is formed sequentially with the baryl b removal step.

引き続き第６図ないし第９図によって第二実施例につい
て説明する。Next, the second embodiment will be explained with reference to FIGS. 6 to 9.

第６図は被整形パイプＰ２１が既に切断され、バリＰｂ
が切断内側へ突成されている状態を示す。FIG. 6 shows that the pipe to be shaped P21 has already been cut and the burr Pb
This shows the state in which the ridge is protruding toward the inside of the cut.

ダブルフレア用の整形用パン千１ｂが、切刃部１１ｂと
成形部１３ｂ及び枢軸部１２ｂが一体となっていて、切
刃部１１ｂの切刃径ｄ２は、被整形パイプＰ２１の内径
と同径となっていて、かつすり林状の頭部面と側面とが
形成する円周状の稜角が鋭角状の刃部１１１ｂとなって
おり、さらに成形部１３ｂは、切刃部１１ｂの胴部から
、前面を約５度の角度で外径方向前方へ、拡開状の斜面
となっている成形面１３１ｂとなされているので。The shaping pan 101b for double flare has a cutting edge 11b, a forming part 13b, and a pivot part 12b integrated, and the cutting edge diameter d2 of the cutting edge 11b is the same diameter as the inner diameter of the pipe to be shaped P21. The circumferential ridge angle formed by the head surface and side surface of the Katsuri Forest shape is an acute-angled blade portion 111b, and the molded portion 13b is formed from the body of the cutting blade portion 11b. , since the front surface is formed into a molding surface 131b that is a slope that expands outward in the outer diameter direction at an angle of about 5 degrees.

該整形用パン千ｌｂを前記第一実施例において説明した
ように、切断端から回動押入するならば、先ず第７図の
ようにバリｐｂを根元から除去し、さらに前進を続ける
ことにより、成形面１３１ｂで切断端を剥め内方向へ押
圧するが、内側へは切刃部１１ｂが邪魔をして曲がれず
、第８図及び第９図のように、次第に切断端直後が塑性
変形して膨らみ、ついには切断端が後方へ陥没してダブ
ルフレアＤＦが形成される。As explained in the first embodiment, if the 1,000 lb shaping pan is rotated and pushed in from the cut end, the burr PB is first removed from the base as shown in FIG. 7, and the pan is continued to move forward. The cut end is peeled off at the molding surface 131b and pressed inward, but the cutting edge 11b prevents it from bending inward, and as shown in FIGS. 8 and 9, the part immediately after the cut end gradually becomes plastically deformed. The cut end bulges out, and finally the cut end collapses backwards, forming a double flare DF.

なお本実施例においては、シングルフレア及びダブルフ
レア形成用の整形用パンチについてのみ説明したが、本
発明はこれらに限定されるものではなく、成形部の斜面
部角度を変更するのみでスプールフレアを形成すること
も、ダブルフレア形成用の整形用パンチを使用して、押
圧を途中で止めなければバルジを形成することも可能で
あり。In this embodiment, only a shaping punch for forming a single flare and a double flare was explained, but the present invention is not limited to these, and the spool flare can be formed simply by changing the slope angle of the forming part. It is also possible to form a bulge using a shaping punch for forming a double flare, provided the pressing is not stopped midway.

これらはすべて前記した本発明の目的と、作用及び後記
する発明の効果が達成される範囲内で任意に定められて
よく、これらは本発明の要旨を変更するものではないこ
とは申すまでもない。All of these may be arbitrarily determined within the scope of achieving the purpose of the present invention described above, the operation, and the effects of the invention described below, and it goes without saying that these do not change the gist of the present invention. .

（発　明　の　効　果） 以上詳細に説明したように、本発明は被整形パイプ内壁
径を外径とし、かつ、先端部を鋭角状とした切刃部と、
所望角で外径方向へ拡開状となっている成形部と、これ
に枢軸部が一体で形成されている整形用パンチを回転摺
動軸へ枢着して、該パイプ切断端から回動押入すること
によって、ローラカッタで所望長に切断した際、該パイ
プの切断端内側へ突成したバリと、該パイプを所望の場
所等へ接続するための任意フレアの形成が、切断から連
続して行なえるから、従来のように切断後、カッタ、グ
ラインダさらには、手作業等でバリを除去し、さらに改
めてフレアユニオン等を用いてフレアを形成していた方
法に比し、格段に作業速度が向上し、また作業員も１名
でよいから１作業能率の向上１人件費の抑制１品質の安
定等波及効果は大なるものがあり、優れた発明といわね
ばならない。(Effects of the Invention) As explained in detail above, the present invention includes a cutting blade whose outer diameter is the inner wall diameter of the pipe to be shaped, and whose tip has an acute angle.
A shaping punch, which has a forming part expanding in the outer radial direction at a desired angle and a pivot part formed integrally with this, is pivoted to a rotating sliding shaft and rotated from the cut end of the pipe. By pressing, when the pipe is cut to a desired length with a roller cutter, the burr that protrudes inside the cut end of the pipe and the formation of an arbitrary flare for connecting the pipe to a desired location, etc. are created continuously from the cutting. The work speed is much faster than the conventional method of removing burrs with a cutter, grinder, or even manually after cutting, and then forming the flare again using a flare union. This invention has great ripple effects such as 1) improving work efficiency, 1) reducing labor costs, and 1) stabilizing quality, since only one worker is required, and it must be called an excellent invention.

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

図面は本発明の一実施例を示したもので、第１図は第一
実施例のパイプをチャフキングしてローラカッタで切断
している状態を示す要部断面図、第２図は回倒の整形パ
ンチを切断端へ対峙させた状態を示す要部断面図、第３
図は回倒のバリ除去直後の状態を示す要部断面図、第４
図は回倒のフレア形成中を示す要部断面図、第５図は回
倒で一端にシングルフレアを形成されたパイプの要部側
面図、第６図は第二実施例の整形パンチを切断端へ対峙
させた状態を示す要部断面図、第７図は回倒のバリ除去
直後の状態を示す要部断面図、第８図は回倒のフレア形
成中を示す要部断面図、第９図は回倒で一端にダブルフ
レアを形成されたパイブの部分断面図である。 １　ａ　、　１　ｂ　−−−−−−一整形パンチ１１ａ
、１ｌｂ−−−−一切　　刃　　部１１１ａ、１ｌｌｂ
−−−刃　　　　　部１２ａ　、　１２ｂ　−−−−一
枢　　軸　　部１３ａ、１３ｂ−−−−一成　　形　　
部１３１ａ、１３１ｂ−−−成　　形　　面Ｐ　１−一
−−＋＋＋−−−パ　　イ　　プＰｌ　１　、Ｐ２１−
−一−−被整形パイブｃｈ−−−−＋＋＋　　−チ　　
　ャ　　　ッ　　　りＣｕ　−−−−−−＋＋−ローラ
ヵフタ５Ｆ−−−−−−−−−−シングルフレアＤＦ−
−−−−−−−−−ダブルフレア。 　ｍThe drawings show one embodiment of the present invention. Fig. 1 is a cross-sectional view of the main part showing the state in which the pipe of the first embodiment is chaffed and cut with a roller cutter, and Fig. 2 is a cross-sectional view of the main part showing the state in which the pipe of the first embodiment is chaffed and cut with a roller cutter. A sectional view of main parts showing a state in which the shaping punch is opposed to the cut end, 3rd
The figure is a cross-sectional view of the main part showing the state immediately after removing the burr of rotation,
The figure is a cross-sectional view of the main part showing the flare being formed by turning, Fig. 5 is a side view of the main part of the pipe with a single flare formed at one end by turning, and Fig. 6 is a cutaway of the shaping punch of the second embodiment. FIG. 7 is a cross-sectional view of the main part showing the state immediately after the burr is removed during turning. FIG. 8 is a cross-sectional view of the main part showing the turning flare being formed. FIG. 9 is a partial cross-sectional view of a pipe that has been rotated to form a double flare at one end. 1 a, 1 b ------- One shaping punch 11a
, 1lb---all blade part 111a, 1llb
---Blade portions 12a, 12b ----One pivot portion 13a, 13b----One molding
Parts 131a, 131b---Molding surface P1-1---+++---Pipe Pl1, P21-
-1--Shaped pipe ch-----+++ -Ch
Shutter Cu −−−−−−++−Roller cap 5F−−−−−−−−−−Single flare DF−
−−−−−−−−−Double flare. m

Claims (2)

【特許請求の範囲】[Claims] （１）任意のパイプをチャッキングの上ローラカッタに
よって所望長に切断する工程と、被整形パイプの切断端
よりこれの内壁に、先端部を鋭角状とした整形用パンチ
の切刃部を接せしめて回動させつつ押入して、前記パイ
プ切断の際切断端内壁へ突成したバリを除去する工程と
、該工程にそのまま続けて、前記整形用パンチの成形部
を回動させつつ押圧して、任意形状のフレアを形成させ
る工程とよりなることを特徴とするパイプ切断端の整形
方法。(1) The process of cutting an arbitrary pipe to a desired length using the upper roller cutter of the chucking, and connecting the cutting edge of a shaping punch with an acute-angled tip to the inner wall of the pipe from the cut end. A step of pushing in while rotating the pipe to remove any burrs that have protruded to the inner wall of the cut end when cutting the pipe; and following this step, pressing the forming part of the shaping punch while rotating; A method for shaping a cut end of a pipe, comprising the steps of: forming a flare of an arbitrary shape. （２）被整形パイプ内壁径を外径とし、該内壁に突成さ
れたバリを除去しうべく先端を鋭角状とした切刃部と、
これに続けて所望角で外径方向へ拡開状となっていて該
切断端へ回動押圧して任意のフレアを形成しうべくなっ
ている成形部と、これに枢軸部を一体状に設けて回動し
うべくなっていることを特徴とする整形用パンチ。(2) a cutting edge whose outer diameter is the diameter of the inner wall of the pipe to be shaped, and whose tip has an acute angle to remove burrs formed on the inner wall;
Following this, a molded part that expands in the outer radial direction at a desired angle and can be rotated and pressed against the cut end to form an arbitrary flare, and a pivot part is integrally attached to this molded part. A shaping punch characterized by being provided and designed to rotate.