JPS62227520A - Manufacture of twisted deformed pipe - Google Patents
Manufacture of twisted deformed pipeInfo
- Publication number
- JPS62227520A JPS62227520A JP6851386A JP6851386A JPS62227520A JP S62227520 A JPS62227520 A JP S62227520A JP 6851386 A JP6851386 A JP 6851386A JP 6851386 A JP6851386 A JP 6851386A JP S62227520 A JPS62227520 A JP S62227520A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- forming roll
- pipe
- roll
- forming
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 21
- 238000009987 spinning Methods 0.000 abstract description 10
- 230000008719 thickening Effects 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 8
- 238000000465 moulding Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、中空円筒管材をスピニング加工法によって、
管の外面が波形状又は多面形状に成形された断面異形の
ねじれテーパー管又は直管に製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to processing a hollow cylindrical tube material by a spinning method.
The present invention relates to a method for producing twisted tapered pipes or straight pipes with irregular cross-sections in which the outer surface of the pipe is formed into a wavy or multifaceted shape.
腎米辺返北
従来、中空円筒管材をいったん縮径し、次いでテーパー
状又は同径状に成形加工する方法として、中空円筒管材
をその両端を支持して回転させ、成形ロールを該管材円
筒周面に押付けながら管の長手方向に移動させて所定形
状に成形加工する、いわゆるスピニング加工法が知られ
ている。Traditionally, the diameter of a hollow cylindrical tube is reduced, and then the hollow cylindrical tube is formed into a tapered shape or the same diameter by rotating the hollow cylindrical tube while supporting both ends, and rolling a forming roll around the circumference of the tube. A so-called spinning method is known in which the tube is moved in the longitudinal direction while being pressed against a surface to form it into a predetermined shape.
口が解決しようとする問題つ
上記のスピニング加工によって、管材の径を細くする場
合、あるいはテーパー状に加工する場合、肉厚を一定に
保持するためには芯金を入れる必要がある。しかし、設
備の点で問題があり、その調整方法も複雑となるために
芯金を使用しないで加工すると、管の肉厚にばらつきが
生じ易く破断あるいは座屈の原因となって、加工が定常
的に行なえなかった。The problem that Kuchi aims to solve: When reducing the diameter of a pipe material by the above-mentioned spinning process or processing it into a tapered shape, it is necessary to insert a core metal in order to maintain a constant wall thickness. However, there are problems with the equipment and the adjustment method is complicated, so if the tube is processed without a core metal, variations in the wall thickness of the tube are likely to occur, causing breakage or buckling, resulting in unsteady machining. I couldn't do it properly.
更に、従来のスピニング加工法では、管外周面に管長手
方向にわたって凹凸又は多面の模様が成形された異形管
を製造することは困難であった。Furthermore, with the conventional spinning method, it is difficult to manufacture a deformed tube in which an uneven or multifaceted pattern is formed on the outer peripheral surface of the tube in the longitudinal direction of the tube.
そこで本発明の目的とするところは、中空円筒管材から
スピニング加工法によってテーパー管又は直管を製造す
る方法において、管外周面に波形又は多面形の模様が管
長手方向にわたって、らせん状に形成されて、これによ
って、管体がねじれた外観を呈するようにされた、断面
異径のねじれテーパー管又は直管を、芯金を用いること
なく、製造する方法を提供することにおる。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for manufacturing a tapered pipe or a straight pipe from a hollow cylindrical pipe material by a spinning process, in which a corrugated or polyhedral pattern is formed spirally on the outer peripheral surface of the pipe in the longitudinal direction of the pipe. Thus, the present invention aims to provide a method for producing twisted tapered pipes or straight pipes with different cross-sectional diameters, in which the pipe body has a twisted appearance, without using a metal core.
問題点を解決するための手段
本発明によるねじれ異形管の製造方法は、前記目的を達
成するため、中空円筒管材をその両端で支持し、該管材
の軸方向に引張力又は圧縮力を加えながら、該管材を回
転させるとともに、成形ロールを該管材に押付けながら
該管材の軸方向に移動させて該管材を所要形状に成形す
るに当たり、該成形ロールに、その周面が波形状又は多
面形状に形成されたロールを使用することを特徴として
いる。Means for Solving the Problems In order to achieve the above object, the method for manufacturing a twisted deformed tube according to the present invention supports a hollow cylindrical tube at both ends, and applies a tensile or compressive force in the axial direction of the tube. When rotating the tube material and moving the forming roll in the axial direction of the tube material while pressing it against the tube material to form the tube material into a desired shape, the forming roll has a wavy or multifaceted peripheral surface. It is characterized by the use of formed rolls.
この発明の方法で用いる装置を図面を参照して具体的に
説明すると、第１図は上記装置の概要を示す斜視図、第
２図はその縦断面図である。The apparatus used in the method of the present invention will be explained in detail with reference to the drawings. FIG. 1 is a perspective view showing an outline of the apparatus, and FIG. 2 is a longitudinal sectional view thereof.
１は中空円筒管材であり、２は成形ロールであって、こ
れは管材１に対し接離自在にかつ管材長手方向に移動自
在に備えられている。３は中間支持体であって管材１の
中間部を支える。1 is a hollow cylindrical tube, and 2 is a forming roll, which is provided so as to be able to move toward and away from the tube 1 and to be movable in the longitudinal direction of the tube. Reference numeral 3 denotes an intermediate support body that supports the intermediate portion of the tube material 1.
この装置によってスピニング加工するには、管材１の両
端にマンドレル４を挿入し、左端外側から駆動側チャッ
ク５で押え、右端外側から応力付加側チャック６で押え
る。中間部を中間支持体３で支え、管材１を回転させな
がら加工しようとする部分に成形ロール２を押しつ【プ
る。To carry out spinning using this device, mandrels 4 are inserted into both ends of the tube material 1, and the mandrels 4 are pressed from the outside of the left end with the driving chuck 5, and the outside of the right end is pressed with the stress applying chuck 6. The intermediate portion is supported by an intermediate support 3, and while the tube material 1 is rotated, a forming roll 2 is pushed onto the portion to be processed.
応力付加側チャックには油圧装置（油圧シリンダー）
７のピストンロッド８が取付けられており、この油圧装
＠７によって、応力付加側チャック６に引張力あるいは
圧縮力を加えることができる。A hydraulic device (hydraulic cylinder) is installed on the stress-applying side chuck.
7 piston rods 8 are attached, and this hydraulic system @7 can apply tensile force or compressive force to the stress-applying side chuck 6.
まず、この装置によって、中空円管材をスピニング加工
してテーパー管又は直管に成形する例を具体的に説明す
ると、第３図に示すとおり、成形ロール２を最小径に絞
り込む位置に当て、駆動用チャック５によって管材１を
回転させながら成形ロール２を押し下げて所定の外径に
なるように絞る。この際第１図および第２図に示した油
圧装置７によって、応力付加側チャック６に矢印の方向
に圧力を加えると、この最小径の部分の肉厚が、薄くな
らずにすむ。次に成形ロールを右方へ移動させがら、そ
の位置を上げて、テーパー加工する際には、第４図の矢
印に示すように、管材１に引張力を加えると管の肉厚が
厚くならずに成形することができる。なお、成形中には
中間支持体３を可及的に成形ロール２に接近させて、成
形ロール２と共に移動させるのが好ましい。First, to explain in detail an example of forming a hollow circular pipe material into a tapered pipe or a straight pipe by spinning using this device, as shown in Fig. 3, the forming roll 2 is placed at the position where it is narrowed to the minimum diameter, The forming roll 2 is pushed down while the tube material 1 is rotated by the use chuck 5, and the tube material 1 is squeezed to a predetermined outer diameter. At this time, if pressure is applied to the stress-applying side chuck 6 in the direction of the arrow by the hydraulic device 7 shown in FIGS. 1 and 2, the wall thickness of this minimum diameter portion does not become thin. Next, while moving the forming roll to the right, raise its position and perform taper processing. As shown by the arrow in Figure 4, when applying tensile force to the pipe material 1, the wall thickness of the pipe becomes thicker. It can be molded without molding. Note that during molding, it is preferable to move the intermediate support 3 as close to the molding roll 2 as possible and moving it together with the molding roll 2.
第５図は最小径に絞り込んだまま、成る長さだけ同径に
すなわち直管に成形する例で、この場合も管材１に矢印
のように引張力が作用するように油圧装置７を作動させ
る。Fig. 5 shows an example of forming a straight pipe to the same diameter by the length while narrowing down to the minimum diameter. In this case as well, the hydraulic device 7 is operated so that a tensile force is applied to the pipe material 1 as shown by the arrow. .
前記のように肉厚を一定に保持して加工できるように、
第１図及び第２図に示した装置は、第６図に示すように
、回転継手９を介して油圧装置（油圧シリンダー） ７
のピストンロッド８によって応力が加えられるようにな
っており、被加工材である管材１の伸び量あるいは縮み
伍を変位量センサー１０によって検出し、その量によっ
て上記油圧装置７を制御できるようになっている。In order to be able to process while keeping the wall thickness constant as mentioned above,
The device shown in FIGS. 1 and 2 is connected to a hydraulic device (hydraulic cylinder) 7 via a rotary joint 9, as shown in FIG.
Stress is applied by the piston rod 8, and the amount of expansion or contraction of the pipe material 1, which is the workpiece, is detected by the displacement amount sensor 10, and the hydraulic device 7 can be controlled based on the detected amount. ing.
本発明の方法は、第１図及び第２図に示した装置におい
て、成形ロール２を、波形又は多面形に形成されたロー
ル成形面を有する特殊形状のロールに代えて、この装置
を使用して同様に一定肉厚でテーパー状又は直管状にス
ピニング加工するとともに、更に前記ロールの成形面に
対応して、管外周面を管の長手方向にわたって、らせん
状に波形状又は多面形状に成形加工するものである。The method of the present invention uses the apparatus shown in FIGS. 1 and 2 in place of the forming roll 2 with a special-shaped roll having a roll forming surface formed in a corrugated or polygonal shape. Similarly, the tube is spun into a tapered or straight tube shape with a constant wall thickness, and the outer peripheral surface of the tube is formed into a spiral wave shape or polyhedral shape along the length of the tube, corresponding to the forming surface of the roll. It is something to do.
第７図及び第８図は、本発明で用いる特殊形状ロールを
示すもので、第７図のものはロール成形面が波形状に形
成された成形ロールでおり、第８図のものはロール成形
面が多面形状に（半径方向断面はへ角形）形成されたロ
ールである。Figures 7 and 8 show specially shaped rolls used in the present invention. This is a roll with polygonal faces (radial cross section is hexagonal).
これら特殊形状をもった成形ロールを第１図及び第２図
に示した装置に使用して、中空円筒管材をスピニング加
工してテーパー管又は直管に成形する場合には、製品管
の肉厚を一定に維持できるとともに、管外周面には波形
模様又は多面模様が管の長手方向にわたって、らせん状
に形成される。このため、製品管は長手方向に、ねじれ
て進む状態に児える。When using these specially shaped forming rolls in the equipment shown in Figures 1 and 2 to spin hollow cylindrical tubes and form them into tapered or straight tubes, the wall thickness of the product tube must be can be maintained constant, and a wavy pattern or a multifaceted pattern is formed in a spiral shape on the outer peripheral surface of the tube over the longitudinal direction of the tube. As a result, the product tube is twisted in the longitudinal direction.
第９図は、第７図の成形ロールを使用してスピニング加
工した場合のテーパー管の測定面であって、管の外周面
には、長手方向に順次らせん状に回転して進む多面体が
形成される。第１０図は、第９図のＡ−Ａ線断面図であ
り、第１１図は同じ＜Ｂ−Ｂ線断面図であって、第１１
図の管断面は第１０図の管断面に対して管軸を中心とし
４０’回転している。この例は第７図の成形ロールを用
いて加工したもので、成形ロールの凸部Ａ、Ｂ、Ｃ１・
・・に対応する部分は、成形管の六角断面のそれぞれ辺
の中央に現われ、凹８トイ、口、ハ・・・はそれぞれ角
部となって現われる。このように、製品管の断面は、長
手方向にわたり管軸を中心として順次、回転しているの
で、管は長手方向に順次ねじれたような外観を生ずる。FIG. 9 shows the measurement surface of a tapered tube when spinning is performed using the forming roll of FIG. 7, and a polyhedron is formed on the outer circumferential surface of the tube that rotates in a spiral shape in the longitudinal direction. be done. 10 is a sectional view taken along the line A-A in FIG. 9, and FIG. 11 is a sectional view taken along the same <B-B line in FIG.
The illustrated tube cross-section has been rotated 40' about the tube axis relative to the tube cross-section of FIG. 10. This example was processed using the forming roll shown in Figure 7, with convex portions A, B, C1, and
The parts corresponding to ... appear at the center of each side of the hexagonal cross section of the molded tube, and the concave 8-toy, mouth, C... appear as corners. In this manner, the cross-section of the product tube rotates sequentially about the tube axis over the length, giving the tube the appearance of being twisted sequentially in the longitudinal direction.
第７図の特殊形状ロールの成形面の波型は任意の形に選
択することができる。The waveform of the forming surface of the specially shaped roll shown in FIG. 7 can be selected to have an arbitrary shape.
更に、本発明方法の使用において、特殊形状ロールの直
径とスピニング加工の加工度を種々変更すると、成形ロ
ールの直径と管材の加工後の直径との兼ね合いで、製品
管外周面には、種々の模様、例えばピッチ、波の高さが
種々異なる波形模様をもったねじれの外観が得られる。Furthermore, when using the method of the present invention, if the diameter of the specially shaped roll and the processing degree of the spinning process are variously changed, the outer circumferential surface of the product tube will have various A twisted appearance with a wavy pattern of varying pitch and wave height is obtained.
発明の効果 本発明により得られる効果は、下記のとおりである。Effect of the invention The effects obtained by the present invention are as follows.
１）高価な成形型を使用しないで、成形ロールの作動に
より、長手方向にわたって断面形状が回転する異形管を
成形することができる。1) A deformed tube whose cross-sectional shape rotates in the longitudinal direction can be formed by the operation of forming rolls without using expensive forming dies.
２）製品管の形状によって、成形型を使用できないもの
（加工後、成形型が製品管内から扱き出せないもの）で
も、加工が可能である。2) Processing is possible even if the shape of the product pipe does not allow the use of a mold (the mold cannot be removed from the product pipe after processing).
３）管材の回転数及び成形ロールの送り速度の選択によ
って、同一の成形ロールで種々のデザインの加工が可能
である。3) Various designs can be processed with the same forming roll by selecting the rotation speed of the tube material and the feed speed of the forming roll.
４）長尺管の加工も可能である。（従来の方法では、管
内の成形型を加工のつど、移動させる必要がある。）
５）製品管には肉厚変動が少ない。4) It is also possible to process long tubes. (In the conventional method, it is necessary to move the mold inside the tube each time it is processed.) 5) There is little variation in the wall thickness of the product tube.
第１図は本発明の方法に使用するための装置の一例を示
す斜視図、第２図は上記装置の縦断面図、第３図ないし
第５図は本発明の方法によって中空円筒管材を縮径加工
した後、テーパー状又は同径に加工する原理を説明する
ための長手方向断面図、第６図は本発明の方法によって
、製品の肉厚を制御するための装置の一例を説明するた
めの長手方向断面図、第７図は本発、明の方法に使用す
る成形ロールの一例を示すものであって、そのａは正面
図、そのｂは側面図、第′８図は本発明に使用する成形
ロールの伯の一例を示し、そのａ、ｂはそれぞれ正面図
、側面図、第９図は第８図の成形ロールによってスピニ
ング加工した製品管の長手方向側面図、第１０図は第９
図のＡ−Ａ線における断面図、第１１図は第９図のＢ−
Ｂ線にあける断面図である。
１・・・中空円筒管材、２・・・成形ロール、３・・・
中間支持体、４・・・マンドレル、５・・・駆動側チャ
ック、
６・・・応力付加側チャック、７・・・油圧装置、８・
・・ピストンロンド、９・・・回転継手、１０・・・変
位量センサー。
特許出願人 住友軽金屈工業株式会社
代理人 弁理士 小 松 秀 岳
代理人 弁理士 旭 宏
第１ 閏
ツ
第２図
第３Ｉ２Ｉ
第５図
Ｚ６ 図
ト のFIG. 1 is a perspective view showing an example of an apparatus used in the method of the present invention, FIG. 2 is a longitudinal cross-sectional view of the above-mentioned apparatus, and FIGS. A longitudinal sectional view for explaining the principle of processing into a tapered shape or the same diameter after diameter processing, and FIG. 6 is for explaining an example of a device for controlling the wall thickness of a product by the method of the present invention. 7 shows an example of a forming roll used in the method of the present invention, in which a is a front view, b is a side view, and FIG. An example of the forming rolls used is shown, a and b are respectively a front view and a side view, FIG. 9 is a longitudinal side view of a product tube spun by the forming rolls of FIG. 8, and FIG. 9
A cross-sectional view taken along line A-A in the figure, Figure 11 is B-- in Figure 9.
It is a sectional view taken along line B. 1... Hollow cylindrical tube material, 2... Forming roll, 3...
Intermediate support, 4... Mandrel, 5... Drive side chuck, 6... Stress application side chuck, 7... Hydraulic device, 8...
... Piston rond, 9... Rotary joint, 10... Displacement sensor. Patent Applicant Sumitomo Light Kinku Kogyo Co., Ltd. Agent Patent Attorney Hide Komatsu Agent Patent Attorney Hiroshi Asahi 1 Leap 2 Figure 3I2I Figure 5 Z6 Figure G
Claims (1)
張力又は圧縮力を加えながら、該管材を回転させるとと
もに、成形ロールを該管材に押付けながら該管材の軸方
向に移動させて該管材を所要形状に成形する方法におい
て、該成形ロールに、その周面が波形状又は多面形状に
形成されたロールを使用することを特徴とするねじれ異
形管の製造方法。A hollow cylindrical tube is supported at both ends, and the tube is rotated while applying a tensile or compressive force in the axial direction of the tube, and a forming roll is moved in the axial direction of the tube while pressing against the tube. 1. A method for manufacturing a twisted deformed tube, which comprises using a roll having a corrugated or multifaceted peripheral surface as the forming roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6851386A JPS62227520A (en) | 1986-03-28 | 1986-03-28 | Manufacture of twisted deformed pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6851386A JPS62227520A (en) | 1986-03-28 | 1986-03-28 | Manufacture of twisted deformed pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62227520A true JPS62227520A (en) | 1987-10-06 |
Family
ID=13375872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6851386A Pending JPS62227520A (en) | 1986-03-28 | 1986-03-28 | Manufacture of twisted deformed pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62227520A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0937520A2 (en) * | 1998-02-18 | 1999-08-25 | Makoto Murata | Plastic working method and plastic working machine |
| US6233991B1 (en) | 1999-01-26 | 2001-05-22 | Bryant Products, Inc. | Apparatus and method for spin forming a tube |
| EP2656938A2 (en) | 2012-04-27 | 2013-10-30 | Hitachi Ltd. | Spinning method, spinning machine, and shaped component |
-
1986
- 1986-03-28 JP JP6851386A patent/JPS62227520A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0937520A2 (en) * | 1998-02-18 | 1999-08-25 | Makoto Murata | Plastic working method and plastic working machine |
| EP0937520A3 (en) * | 1998-02-18 | 2001-03-07 | Murata, Makoto | Plastic working method and plastic working machine |
| US6325953B1 (en) | 1998-02-18 | 2001-12-04 | Showa Denko K.K. | Plastic working method and plastic working machine |
| US6233991B1 (en) | 1999-01-26 | 2001-05-22 | Bryant Products, Inc. | Apparatus and method for spin forming a tube |
| EP2656938A2 (en) | 2012-04-27 | 2013-10-30 | Hitachi Ltd. | Spinning method, spinning machine, and shaped component |
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