JPS6162665A - Method of manufacturing bellows for exhaust pipe - Google Patents
Method of manufacturing bellows for exhaust pipeInfo
- Publication number
- JPS6162665A JPS6162665A JP18332584A JP18332584A JPS6162665A JP S6162665 A JPS6162665 A JP S6162665A JP 18332584 A JP18332584 A JP 18332584A JP 18332584 A JP18332584 A JP 18332584A JP S6162665 A JPS6162665 A JP S6162665A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- tube
- cutting
- cut
- crest
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/04—Bellows
- F16J3/047—Metallic bellows
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Diaphragms And Bellows (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は排気管用で、特に高温に晒される自動車用等に
用いる排気管用ベローズの製造方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing exhaust pipe bellows, particularly for use in automobiles exposed to high temperatures.
従来の技術
一般に、この種の排気管用ベローズ（第４図参照）はｔ
ｏ、２〜０．４ｍｍ程度のステンレス鋼板製で大小径の
異なる２本のチューブ１，２を嵌合せ挿通して互いに積
層し、内部から外に向けて膨出させることにより山部３
、谷部４を所定間隔毎に複数形成するようにされている
。このベローズが６００〜８００℃程度の高温状態で使
用されると、２層のチューブ１，２間に残存する空気や
水分等が膨張して空隙部５を生ずる如くベローズの一部
が変形して（第５図参照）、ベローズの機能である可撓
性を損失してしまうことになる。従って、両層間に残存
する空気等はベローズ成形後または使用中に各チューブ
１．２の間から排出する必要がある。Conventional technology In general, this type of exhaust pipe bellows (see Fig. 4) is
o. Two tubes 1 and 2 made of stainless steel plates of about 2 to 0.4 mm and having different diameters are fitted and inserted, stacked on top of each other, and bulged from the inside to the outside to form the peak part 3.
, a plurality of troughs 4 are formed at predetermined intervals. When this bellows is used at a high temperature of about 600 to 800 degrees Celsius, the air, moisture, etc. remaining between the two-layer tubes 1 and 2 expands and a part of the bellows deforms, creating a void 5. (See FIG. 5), the flexibility which is the function of the bellows will be lost. Therefore, the air remaining between the two layers must be discharged from between each tube 1.2 after the bellows is formed or during use.
従来、その空気等はベローズを成形した後に外部から切
断用ガスバーナーを用いてチューブの外層１のみを部分
的に溶融除去させることにより排出孔を形成する方法が
採用されている。Conventionally, a method has been adopted in which the air or the like is formed by forming a bellows and then using a cutting gas burner from the outside to partially melt and remove only the outer layer 1 of the tube to form a discharge hole.
発明が解決しようとする問題点
然し、このカスバーナーで外層１のみを一部除去するに
は極めて厳密な操作管理と熟練した技術を必要とし、そ
れであっても内層チューブ２にまで達する貫通孔６が出
来て（第６ＵＡ参照）排乞ガス漏れを生ずる不良品を産
出してしまったり過度の加熱によりベローズの性能を劣
化させるという不具合がある。Problems to be Solved by the Invention However, removing only a portion of the outer layer 1 with this cass burner requires extremely strict operational control and skilled technique, and even then, the through hole 6 that reaches the inner layer tube 2 is difficult to remove. (See 6th UA) This results in the production of defective products that cause exhaust gas leakage, and the performance of the bellows deteriorates due to excessive heating.
問題点を解決するための手段
本発明に係る排気管用ベローズの製造方法においては、
外層側チューブの山部を切削して内層側のチューブを部
分的に露出する切除部を設けるようにされている。Means for Solving the Problems In the method for manufacturing an exhaust pipe bellows according to the present invention,
A cutting portion is provided by cutting the peak of the outer tube to partially expose the inner tube.
作 用
この切除部は、ベローズと切削刃とを互いに位置決めす
れば外層チューブのみを切削して正確な切除部として簡
単に設けることができ、特に熟練した技術等を必要とさ
れない。Function: This resection portion can be easily provided as an accurate resection portion by cutting only the outer tube by positioning the bellows and the cutting blade with respect to each other, and does not require particularly skilled techniques.
実施例
以下、第１〜３図を参照して説明すれば１次の通りであ
る。The first embodiment will be described below with reference to FIGS. 1 to 3.
このベローズは、ｔ５４図で示すと同様に大小径の異な
る２本のステンレス鋼板製チューブ１０゜１１を互いに
嵌合せて積層することにより形成されている。その軸線
部分には長手方向で定間隔毎に山部１２．谷部１３が′
＃ｉ数成形成形、この山部１２と谷部１３とで可撓性を
発揮し得るよう蛇腹状にされている。This bellows is formed by fitting and stacking two stainless steel tubes 10° and 11 having different diameters, as shown in Figure t54. The axial portion has ridges 12 at regular intervals in the longitudinal direction. Tanibe 13'
#i number molding, the peaks 12 and troughs 13 are bellows-shaped to exhibit flexibility.
その山部１２の頂部には外層のチューブ１０を切削して
、内層側のチューブ１１が露出する切除部１４が設けら
れている。この切除部１４は所望の間隔毎に形成できる
ものであり９例えば、二個装置き毎に設けるようにする
ことができる。また、切除部１４は完全に内層チューブ
１１の一部が露出する如く設けることが望ましいが、外
層チューブ１０が薄肉状に僅かに残る程度でも差つかえ
ない。A cutout part 14 is provided at the top of the mountain part 12 by cutting the outer layer tube 10 to expose the inner layer side tube 11. The cutouts 14 can be formed at desired intervals, and for example, they can be provided every two devices. Further, it is desirable that the cutout part 14 be provided so that a part of the inner layer tube 11 is completely exposed, but it is also acceptable if the outer layer tube 10 is left in a thin shape.
この切除部１４を設けるには、切削バイト（第２図ａ、
ｂ参照）を用いることができる。この切削バイトは、定
置台２０にベローズを円周で挾持するクランプ２１ｔｌ
−備え、そのクランプ２１で支持するベローズの所定個
所の山部に対して摺接下降動する複数の切削刃２２．２
２・・・を備付けて構成されている。クランプ２１は片
側の受顎２１ａが駆動シリンダ２３で水平方向に摺動す
るようスライドベース２４に取付（すられ、その摺動を
定置台２０の下方から上方に突出する位置決めピン２５
でベローズの軸線方向の位置を定めて確り挟持できるよ
うになっている。また、切削刃２２ 、２２・・・は各
刃先を水平方向に突出させてホルダー２６に装着され、
しかも順次上方に向って刃先の突出量が大きくなるよう
取付けられている。そのホルダー２６は駆動シリンダ２
７で上下動可能に装着され、複数の切削刃２２．２２・
・・を下位のものから上位のものの順でベローズの所定
の山部に摺接動するようになっている。In order to provide this cutout 14, a cutting tool (Fig. 2a,
b) can be used. This cutting tool is a clamp 21tl that clamps the bellows on the stationary table 20 at the circumference.
- A plurality of cutting blades 22.2 are provided, and the plurality of cutting blades 22 .
It is configured with 2... The clamp 21 is attached to the slide base 24 so that the receiving jaw 21a on one side can slide horizontally on the drive cylinder 23.
This allows the bellows to be positioned in the axial direction and clamped securely. Further, the cutting blades 22, 22... are mounted on the holder 26 with each cutting edge protruding in the horizontal direction,
Furthermore, the blades are installed so that the amount of protrusion of the cutting edge gradually increases upward. The holder 26 is the drive cylinder 2
7, it is mounted so that it can move up and down, and has multiple cutting blades 22, 22,
. . . are slid into predetermined peaks of the bellows in order from the lowest to the highest.
この切削バイトを用いては、クランプ２１でベローズを
挾持し、それを定位置で上下動する切削刃２２．２２・
・・により切削するため、正確に外層側のチューブ１０
のみを部分的に切除して内層側チューブ１１を露出する
ことができるようになる。When using this cutting tool, the bellows is held by the clamp 21, and the cutting blade 22, 22, which moves up and down in a fixed position.
Because it is cut by..., the tube 10 on the outer layer side is accurately cut.
The inner layer tube 11 can now be exposed by partially cutting out only the inner layer side tube 11.
発明の効果
以上の如く、本発明に係る排気管用ベローズの製造方法
に依れば、内外層チューブ間から空気や水分等を排出す
る切除部を簡単でしかも正確に形成できるので歩曹りの
向上を図り得るようになり、また加熱等で部分的に塑性
変形を生ずる如き事態を生じないから長期間に亘って可
撓性を良好に保持させることもできる。Effects of the Invention As described above, according to the manufacturing method of the bellows for an exhaust pipe according to the present invention, the cutting portion for discharging air, moisture, etc. from between the inner and outer layer tubes can be easily and accurately formed, resulting in improved walking efficiency. Furthermore, since there is no possibility of partial plastic deformation due to heating or the like, flexibility can be maintained well for a long period of time.
ｔＪＳ１図ａは本発明に係る方法で製造した排気管用ベ
ローズの縦断面図、第１図すは同へローズの山部の拡大
縦断面図、第１図Ｃは同ベローズの横断面図、第２図ａ
は同ベローズの製造に用い得る切削バイトの側面図、第
２図すは同切削バイトの一部拡大斜視図、第３図は同装
置で製造したベローズの側面図、第４図は一般に用いら
れているベローズの一部切断側面図、第５図は同ベロー
ズの問題点を示す一部拡大断面図、第６図は従来例に係
る方法で製造したベローズの欠点を示す一部拡大断面図
である。
１０．１１＋金属チユーブ、１２二山部、１３：谷部、
１４：切除部。
第２図ａ
第２図ｂtJS1 Figure a is a vertical cross-sectional view of an exhaust pipe bellows manufactured by the method according to the present invention, Figure 1 is an enlarged vertical cross-sectional view of the mountain part of the bellows, Figure 1 C is a cross-sectional view of the bellows, and Figure 1 C is a cross-sectional view of the bellows. Figure 2a
1 is a side view of a cutting tool that can be used to manufacture the bellows, FIG. 2 is a partially enlarged perspective view of the cutting tool, FIG. 3 is a side view of a bellows manufactured with the same apparatus, and FIG. 4 is a generally used bellows. FIG. 5 is a partially enlarged sectional view showing the problems with the bellows, and FIG. 6 is a partially enlarged sectional view showing the defects of the bellows manufactured by the conventional method. be. 10.11+metal tube, 12 double peaks, 13: valleys,
14: Resection area. Figure 2a Figure 2b
Claims (1)
山部と谷部とを所定のピッチ毎に連続して形成した管状
体で、その外層チューブで成形した山部の先端を一定の
間隔で切削することにより薄肉部を形成もしくは内層の
金属チューブが部分的に露出する切除部を形成するよう
にしたことを特徴とする排気管用ベローズの製造方法。It is a tubular body made by laminating at least two metal tubes and forming continuous peaks and valleys at a predetermined pitch in the middle, and the tips of the peaks formed by the outer tube are arranged at regular intervals. A method of manufacturing a bellows for an exhaust pipe, characterized in that a thin walled portion is formed by cutting or a cutout portion is formed in which an inner layer metal tube is partially exposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18332584A JPS6162665A (en) | 1984-08-31 | 1984-08-31 | Method of manufacturing bellows for exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18332584A JPS6162665A (en) | 1984-08-31 | 1984-08-31 | Method of manufacturing bellows for exhaust pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6162665A true JPS6162665A (en) | 1986-03-31 |
Family
ID=16133730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18332584A Pending JPS6162665A (en) | 1984-08-31 | 1984-08-31 | Method of manufacturing bellows for exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6162665A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0295790U (en) * | 1989-01-14 | 1990-07-31 | ||
| KR100702442B1 (en) * | 2005-09-09 | 2007-04-04 | 위아 주식회사 | Boot for Constant Velocity Joint |
-
1984
- 1984-08-31 JP JP18332584A patent/JPS6162665A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0295790U (en) * | 1989-01-14 | 1990-07-31 | ||
| KR100702442B1 (en) * | 2005-09-09 | 2007-04-04 | 위아 주식회사 | Boot for Constant Velocity Joint |
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