JPS60261608A - Pipe contraction working method - Google Patents
Pipe contraction working methodInfo
- Publication number
- JPS60261608A JPS60261608A JP11865884A JP11865884A JPS60261608A JP S60261608 A JPS60261608 A JP S60261608A JP 11865884 A JP11865884 A JP 11865884A JP 11865884 A JP11865884 A JP 11865884A JP S60261608 A JPS60261608 A JP S60261608A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- roll
- pipe
- rolls
- processing
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、スピニングマシンにより素ｔ１７）径に比し
径差が大きく、かつ比較的長尺の細管を形成するパイプ
縮管加工方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for shrinking a pipe by using a spinning machine to form a relatively long narrow tube with a large difference in diameter compared to the original diameter.
従来の技術および問題点
第１図（ａｌは木管、同図（ｂｌはこの素管１より形き
い小径ｄの、かつ長尺の細管４とよりなる。BACKGROUND TECHNOLOGY AND PROBLEMS In FIG. 1, al is a wooden tube, and in the same figure, bl is a long narrow tube 4 that is smaller in diameter d than the base tube 1.
この細管４の形成に際しては、通常第２図に示す如く１
個の絞りロール６を用い多サイクルの絞り加工により行
なわれる。しかしこの場合、芯金６が用いられるが、途
中の絞り加工は、いわゆる空絞り加工である。従って縮
管に際しては、その途中において偏肉あるいは伸び率の
バラツキ、斑等により第２図に示す如く素管１の自由端
１λは振れ撓みを生じ、それがｌサイ少々にして第８図
に示す如（粗形部７の自由端に亀裂８を生ずることがあ
る。そのま＼絞り加工を継続するときは、亀裂８は成長
するため加工９において切損するおそれがあり、細管４
の長さが大となる程その傾向が大である。When forming this thin tube 4, usually 1
The drawing process is performed using multiple drawing rolls 6 in multiple cycles. However, in this case, although the core metal 6 is used, the drawing process in the middle is a so-called dry drawing process. Therefore, when shrinking the pipe, the free end 1λ of the raw pipe 1 will run out and bend as shown in Fig. 2 due to uneven thickness, variation in elongation rate, unevenness, etc., as shown in Fig. 2. As shown in FIG.
The greater the length, the greater this tendency.
実験結果によると、素管１の材質をアルミニウムとし、
外径（製品８の大径部８と同径である）を４８ｍ、素管
肉厚ｔ ｏ ｍ、細管４の外径ｄ−１ｓｍ、肉厚１．７
６ ｍの場合、細管４の長さは６０〜ｙｏｓ＋ｗが限界
であると共に、縮管加工のため細管４の肉厚に斑を生じ
、１！１ｍ／は加工できない等の欠点がある。この細管
４の肉厚の決定は絞りロール６を芯金６に押しつけ、し
ごき加工により行われるが、芯金６の細径部６１が細く
、かつ長い場合には芯金に撓みを生じて効果的に行うこ
とができず、しかも段部で折損する等のおそれが′ある
。According to the experimental results, the material of the base tube 1 is aluminum,
The outer diameter (same diameter as the large diameter part 8 of the product 8) is 48 m, the raw tube wall thickness is t o m, the outer diameter of the thin tube 4 is d-1 sm, and the wall thickness is 1.7
In the case of 6 m, the limit for the length of the thin tube 4 is 60 to yos+w, and there are disadvantages such as unevenness in the thickness of the thin tube 4 due to the tube shrinking process, and a length of 1!1 m cannot be processed. The wall thickness of the thin tube 4 is determined by pressing a squeeze roll 6 against the core metal 6 and ironing it. However, if the narrow diameter portion 61 of the core metal 6 is thin and long, the core metal is bent and the effect is reduced. Moreover, there is a risk of breakage at the step.
このため、複数個例えば８個の絞りロールを：ｉ エ＠
ｔｔｓ ＆ ＊ ｒ。、８□、ヵ６３４□１゜工を行
う方法が提案されている。この方法によるときは、８個
の絞りロールにより同時に絞られる故、芯金６に沿って
のしごき加工に際し、この芯金を曲げるおそれはないが
、空絞りに際しては、上記１個の絞りロールの場合と同
様に自由端の振れ撓みによる亀裂発生及び段部８におけ
る折損等の発生は免れない。For this reason, a plurality of squeezing rolls, for example 8, are used:
tts&*r. , 8□, and 634□1° machining methods have been proposed. When this method is used, there is no risk of bending the core metal 6 during the ironing process because it is simultaneously squeezed by eight squeeze rolls. As in the above case, occurrence of cracks and breakage at the stepped portion 8 due to deflection of the free end cannot be avoided.
このタメ素管１の自由端を拘束ローラ等により把持し、
上記振れ撓みを防止する方法も提案されているが、構造
複雑であり、取付けに時間を要し、かつ拘束部分は縮管
加工ができないので素管の歩留りが悪く、特殊な場合に
使用されるのみで、一般的には使用されていない。The free end of this spool tube 1 is gripped by a restraining roller or the like,
Methods to prevent the above-mentioned run-out and deflection have been proposed, but they are structurally complex, take time to install, and the restrained parts cannot be shrunk, resulting in a poor yield of raw pipes and are only used in special cases. and is not generally used.
問題点を解決するための手段
本発明はかかる点に鑑みてなされたもので、縮管に際し
振れを生ずることがなく、径差の大きい細管の加工を容
易になし得る縮管加工方法を提供することを目的とし、
素管を芯金上に嵌挿し、一端を支持し他端を自由端とし
、加工ロールは加工軸心を中心として複数個を対称的に
配備し、かつ加工ロールは軸心方向に沿う複数個ロール
より形成し、多サイクルの空絞り加工により上記ロール
により素管を把持しつ＼粗形状に絞り、次いで芯金に沿
ってしごき加工を行うことを特徴とするものである。Means for Solving the Problems The present invention has been made in view of the above points, and provides a tube shrinking method that does not cause runout during tube shrinking and can easily process thin tubes with large diameter differences. The purpose is to
A blank pipe is inserted onto a core metal, one end is supported and the other end is a free end, and a plurality of processing rolls are arranged symmetrically around the processing axis, and a plurality of processing rolls are arranged along the axial direction. It is characterized in that it is formed from rolls, and the raw pipe is gripped by the rolls and drawn into a rough shape through multiple cycles of dry drawing, and then ironed along the core metal.
実施例
第４図は本発明の加工方法に使用する加工ロールの正面
図である。この加工ロール１０は軸芯方向に間隔を存し
て複数個（図例は２個）の山部１１．ＩＬＩを備え、一
方の山部１１は絞りロールとし、他方の山部１ｇを案内
ロールとしたもので、案内ロールｌｉｔは絞りロール１
１と同一直径か、あるいは若干小径に形成される。Embodiment FIG. 4 is a front view of a processing roll used in the processing method of the present invention. This processing roll 10 has a plurality of peaks 11 (two in the example) spaced apart in the axial direction. One peak 11 is a squeeze roll, and the other peak 1g is a guide roll, and the guide roll lit is the squeeze roll 1.
It is formed to have the same diameter as 1 or a slightly smaller diameter.
上記実施例は一体形として説明したが、各ローラ１１，
１ｇを所定間隔を存して軸方向に個別に固定してもよい
は勿論である。Although the above embodiment has been described as an integral type, each roller 11,
1g may of course be fixed individually in the axial direction at predetermined intervals.
上記加工ロール１Ｇによる縮管加工方法を第６図乃至第
１図について説明する。The tube shrinking method using the processing roll 1G will be explained with reference to FIGS. 6 to 1.
素管１の一端は芯金６上に嵌挿され、芯金６と共にスピ
ニングマシンの主軸（図示省略）に取付けられるチャッ
ク１８に固着され、芯金６の細径部６ａの先端は心押台
（図示省略）に支持され、素管１の他端１２は自由に解
放されている。One end of the raw tube 1 is fitted onto the core bar 6 and fixed to a chuck 18 that is attached to the main shaft (not shown) of the spinning machine together with the core bar 6, and the tip of the narrow diameter portion 6a of the core bar 6 is attached to the tailstock. (not shown), and the other end 12 of the blank tube 1 is freely open.
上記加工ロール１０は第６図に示す如く、回転軸心を中
心として複数個（図例は８個）対称に配備される。そし
て先づ第６図の加工サイクルＡに示す如く、それぞれの
加工ロール１ｏは同期してＹ軸方向の往復行と、Ｘ軸方
向の食い込みとが行なわれ、絞りロール１１により空絞
りを行い粗形部１５を形成する。この際絞りロール１１
による縮管加工時振れが発生するが直の
ちに後方向案内ロール１！にて拘束又は支持される故、
振れ撓みは矯正され第２図に示す如き振れを生ずること
なく最良条件で加工が進展できる。なｔこの場合、縮管
加工の性質上、粗成部１５は素管ｌよりも若干肉厚とな
る。As shown in FIG. 6, a plurality of processing rolls 10 (eight in the illustrated example) are arranged symmetrically around the rotation axis. First, as shown in the machining cycle A in FIG. 6, each of the machining rolls 1o synchronously reciprocates in the Y-axis direction and bites in the X-axis direction, and performs dry drawing with the squeeze roll 11 to roughen the roughness. A shaped portion 15 is formed. At this time, the squeeze roll 11
During the pipe shrinking process, run-out occurs, but immediately the rear guide roll 1! Because it is restrained or supported by
The run-out deflection is corrected and machining can proceed under the best conditions without causing run-out as shown in FIG. In this case, due to the nature of the tube shrinking process, the roughened portion 15 will be slightly thicker than the raw tube l.
上記空絞りを続けることにより、粗形部１６の内径は芯
金６の細径部６ａに当接する。当接した後は第７図に示
す如く、各加工ロール１０は加工サイクルＢに示す如く
、上述と同様のＹ軸方向の往復行とＸ軸方向の食い込み
により、しごき加工を行い、粗形部１５を所定の肉厚の
細管４に仕上げ、第１図ｔｂ）に示す製品２を形成する
。By continuing the above-mentioned dry drawing, the inner diameter of the coarse portion 16 comes into contact with the narrow diameter portion 6a of the core bar 6. After contacting each other, as shown in FIG. 7, each processing roll 10 performs ironing processing by reciprocating in the Y-axis direction and biting in the X-axis direction as shown in processing cycle B as described above, thereby forming a rough part. 15 is finished into a thin tube 4 having a predetermined wall thickness to form the product 2 shown in FIG. 1 (tb).
実験結果によると、上記本発明方法によるときは素管の
外径（製品２の外径も同一である）Ｄ−４８８、肉厚２
．０１ｍ１のアルミニウム管の場合、細管４の直径ｄ−
１２■、肉厚１．７６ｍとし、その長さは４００８以上
とすることが可能であり、かつ細管４の肉厚も略均−と
することができた。According to the experimental results, when using the method of the present invention, the outer diameter of the raw pipe (the outer diameter of product 2 is also the same) is D-488, and the wall thickness is 2.
．． In the case of an aluminum tube of 01 m1, the diameter of the capillary tube 4 is d-
12 mm and a wall thickness of 1.76 m, the length could be set to 400 mm or more, and the wall thickness of the thin tube 4 could also be made approximately equal.
発明の効果
本発明によるときは、複数の加工ロールを加工軸心を中
心として対称的に配備し、かつ加工・σ
ロールは軸１方向に沿う複数個ロールより形成したから
素管の自由端側は振れることがなく、従って自由端は変
形あるいは割れを生ずることがなく、長尺の、かつ所定
肉厚の細管を容易に・） ヤ＄ｆ；６Ｃよヵ、□６゜よ
えよ１８□（［１０−）Ｌｙのうち一方を絞りロールと
し、これによる縮管加工により振れ撓み等が生じても直
ちに後方の案内ロールにより拘束又は矯正せしめるよう
にしたから振れ、撓み等の発生が全くなく更に能率的正
確に縮管加工を行うことが出来た。Effects of the Invention According to the present invention, a plurality of processing rolls are arranged symmetrically around the processing axis, and the processing/σ rolls are formed from a plurality of rolls along one direction of the axis. The free end does not shake out, therefore, the free end does not deform or crack, and it is easy to form a long thin tube with a specified wall thickness. [10-) Since one of the Ly is a squeeze roll, and even if any deflection or deflection occurs due to the tube shrinking process, it is immediately restrained or corrected by the rear guide roll, so there is no occurrence of deflection or deflection. We were able to perform the tube shrinking process efficiently and accurately.
第１図＋ａ）は素管、同図ｆｂ）は製品のそれぞれの縦
断面図、第２図は従来の絞り加工の説明図、第８図は従
来の絞り加工により発生した亀裂を示す説明図、第４図
乃至第７図は本発明の加工方法に関し、第４図は加工ロ
ールの正面図、第６図は粗形部の加工要領説明図、第６
図は＠５図におけるＩ−Ｉ線に沿う断面図、第７図はし
ごき加工要領の説明図である。
ｌは素管、 ４は細管、 ６は芯金、ｌＯは加工ロール
、１１は絞りロール、ｌ！＋は案内ロール、 １５は粗
形部である。Figure 1+a) is a raw pipe, fb) is a vertical cross-sectional view of the product, Figure 2 is an explanatory diagram of conventional drawing process, and Figure 8 is an explanatory diagram showing cracks generated by conventional drawing process. , FIG. 4 to FIG. 7 relate to the processing method of the present invention, FIG. 4 is a front view of the processing roll, FIG.
The figures are a sectional view taken along the line I--I in Figure @5, and Figure 7 is an explanatory diagram of the procedure for ironing. l is the raw tube, 4 is the thin tube, 6 is the core metal, lO is the processing roll, 11 is the drawing roll, l! + is a guide roll, 15 is a rough section.
Claims (2)
加工方法において、素管を芯金上に嵌挿し、かつ一端を
支持し他端を自由端とし、加工ロールは加工軸心を中心
として複数個を対称的に配備し、かつ夫々の加工ロール
は軸心方向に沿う複数個ロールより形成し、多サイクル
の空絞り加工により上記ロールにより素管を把持しつ＼
粗形状に絞り、次いで芯金に沿ってしごき加工を行うこ
とを特徴とするパイプ縮管加工方法。(1) In a pipe shrinking method that shrinks the pipe into a thin tube with a larger diameter difference than the base pipe, the base pipe is inserted onto a core metal, one end is supported and the other end is a free end, and the processing roll is centered on the processing axis. A plurality of rolls are arranged symmetrically around the center, and each processing roll is formed from a plurality of rolls along the axial direction, and the blank pipe is gripped by the rolls through multi-cycle dry drawing processing.
A pipe shrinking method characterized by drawing it into a rough shape and then ironing it along a core metal.
内ロールとの複数個ロールより形成したことを特徴とす
る特許請求の範囲第一項記載のパイプ縮管加工方法。(2) The pipe shrinking method according to claim 1, wherein the processing roll is formed of a plurality of rolls including a squeeze roll and a guide roll along the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11865884A JPS60261608A (en) | 1984-06-09 | 1984-06-09 | Pipe contraction working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11865884A JPS60261608A (en) | 1984-06-09 | 1984-06-09 | Pipe contraction working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60261608A true JPS60261608A (en) | 1985-12-24 |
| JPH0446647B2 JPH0446647B2 (en) | 1992-07-30 |
Family
ID=14742013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11865884A Granted JPS60261608A (en) | 1984-06-09 | 1984-06-09 | Pipe contraction working method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60261608A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000005007A1 (en) * | 1998-07-21 | 2000-02-03 | Sango Co., Ltd. | Spinning processing method and apparatus therefor |
| EP1486268A1 (en) * | 2003-06-11 | 2004-12-15 | Synventive Molding Solutions B.V. | Method for the production of tubular structures with a gradually changing inner diameter |
| US6907762B2 (en) | 2000-07-21 | 2005-06-21 | Johan Massee | Method and forming machine for deforming a hollow workpiece |
| US7152445B2 (en) | 2002-03-13 | 2006-12-26 | Johan Massee | Method and forming machine for working a workpiece |
| US7251974B2 (en) | 2000-07-21 | 2007-08-07 | Johan Massee | Method and forming machine for deforming a hollow workpiece |
-
1984
- 1984-06-09 JP JP11865884A patent/JPS60261608A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000005007A1 (en) * | 1998-07-21 | 2000-02-03 | Sango Co., Ltd. | Spinning processing method and apparatus therefor |
| US6386010B1 (en) | 1998-07-21 | 2002-05-14 | Sango Co., Ltd. | Spinning processing method and apparatus therefor |
| US6907762B2 (en) | 2000-07-21 | 2005-06-21 | Johan Massee | Method and forming machine for deforming a hollow workpiece |
| US7174759B2 (en) | 2000-07-21 | 2007-02-13 | Johan Massee | Forming machine and method for deforming a hollow workpiece |
| US7251974B2 (en) | 2000-07-21 | 2007-08-07 | Johan Massee | Method and forming machine for deforming a hollow workpiece |
| US7152445B2 (en) | 2002-03-13 | 2006-12-26 | Johan Massee | Method and forming machine for working a workpiece |
| US7219520B2 (en) | 2002-03-13 | 2007-05-22 | Johan Massee | Method and forming machine for working a workpiece |
| EP1486268A1 (en) * | 2003-06-11 | 2004-12-15 | Synventive Molding Solutions B.V. | Method for the production of tubular structures with a gradually changing inner diameter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0446647B2 (en) | 1992-07-30 |
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