JPS61245914A - Manufacture of pipe with thick pipe end - Google Patents
Manufacture of pipe with thick pipe endInfo
- Publication number
- JPS61245914A JPS61245914A JP61035403A JP3540386A JPS61245914A JP S61245914 A JPS61245914 A JP S61245914A JP 61035403 A JP61035403 A JP 61035403A JP 3540386 A JP3540386 A JP 3540386A JP S61245914 A JPS61245914 A JP S61245914A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- diameter
- pipe
- walled
- thick
- 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 description 8
- 238000000034 method Methods 0.000 claims description 36
- 230000008569 process Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000001788 irregular Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K21/00—Making hollow articles not covered by a single preceding sub-group
- B21K21/12—Shaping end portions of hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/16—Making tubes with varying diameter in longitudinal direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/10—Making machine elements axles or shafts of cylindrical form
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、管形の素管を冷間変形る、ことによって厚肉
の管端を有る、管を製作る、だめの方法に関る、。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for producing pipes with thick-walled pipe ends by cold deforming a tubular blank pipe.
従来技術
上記の形式の管は例えば自動車を駆動る、だめのトルク
管として利用される。西ドイツ国特許第３００９２７７
号明細書によれば、管の中央範囲が少なくとも２つの段
部を有しており、かつ該中央範囲の肉厚の寸法が、すべ
ての管横断面が同じ機械的強度を持つような寸法にされ
ている形式のトルク管が既に提案された。BACKGROUND OF THE INVENTION Tubes of the type described above are used, for example, as torque tubes for driving automobiles. West German Patent No. 3009277
According to the specification, the central region of the tube has at least two steps, and the wall thickness of the central region is dimensioned such that all tube cross sections have the same mechanical strength. A torque tube of the type described has already been proposed.
冒頭に記載の形式の方法はフランス国特許第２５３４１
５９号明細書に記載されている。A method of the type described at the beginning is disclosed in French Patent No. 25341.
It is described in the specification of No. 59.
該方法では一方向で冷間引抜きる、ことにより一定の外
径を有る、中空部材を製作る、。出発点は減径され、厚
肉にされた管端であり、この管端は後で機械的に加工る
、かまたは１度または数度のプレスにより内側へ折り曲
げなければならない。この方法では管の両端の減径が達
成できず、また増径も達成できない場合がある。The method involves cold drawing in one direction, thereby producing a hollow member with a constant outer diameter. The starting point is a reduced diameter and thickened tube end, which must subsequently be mechanically processed or bent inward by one or more presses. This method may not be able to reduce the diameter of both ends of the tube, nor may it be possible to increase the diameter.
要る、にそのためには特別な機械を使用しなければなら
ない。In order to do this, a special machine must be used.
西ドイツ国特許第３０２１４８１号明細書には特殊な引
抜き方法が記載されている。該方法は経済的に管製造工
場でのみ特殊な引抜き機で実施できるにすぎない。この
公知の方法によれば任意の箇所で管壁を内側へも外側へ
も厚肉にる、ことができるが、シかし所望の製品につい
て伏厚肉部の正しい位置はまた相応して精確な所定寸法
への切断に左右され、このことは例えば特別な測定方法
を放要とる、。この方法では管端の増径も減径も得られ
ない。German Patent No. 30 21 481 describes a special drawing method. The process can only be carried out economically in special drawing machines in tube manufacturing plants. Although this known method makes it possible to thicken the tube wall both inwardly and outwardly at any point, the correct position of the thickened wall for the desired product also requires corresponding precision. depending on the cut to a certain size, this may require, for example, special measuring methods. This method neither increases nor decreases the diameter of the tube end.
厚肉の管端を有る、管を製作る、ためには、西Ｐイッ国
特許第２８１２８０３号明細書から管端の熱間スェージ
ングおよび減径が知られている。この熱間変形によれば
スケールが生じるのみならず不都合な継ぎ目も存在る、
。その他にかかる方法を実施る、ための費用が著しく高
い。For producing tubes with thick-walled tube ends, hot swaging and diameter reduction of the tube ends is known from EP Patent No. 2,812,803. This hot deformation not only creates scale but also creates inconvenient seams.
. The cost of implementing other such methods is significantly high.
発明が解決すべき問題点
本発明の課題は、中空体、特に自動車でトルクの伝達の
ために用いられ、しかも軽量構造に即応したトルク管で
あって、著しい応力のかがる管端で厚くされた管壁部分
を持ったものを経済的に、かつ寸法を精確に冷間変形る
、ことができ、かつ全体的に冷間変形による出発材料の
強化を達成る、ことができる方法を提案る、ことである
。更に該方法は大量生産式の管端変形機械で実施できる
ものであって、しかも高価な特別な機械や個別機械を使
用せずに済むものでなくてはならない。Problems to be Solved by the Invention The object of the present invention is to provide a hollow body, particularly a torque tube used for transmitting torque in automobiles, which is suitable for lightweight construction, and which is thick at the tube end where significant stress is applied. We propose a method that can economically and dimensionally accurately cold-deform pipes with a pipe wall section that has been deformed, and that can achieve overall strengthening of the starting material by cold deformation. , that is. Furthermore, the method must be capable of being carried out on a mass-produced tube end-forming machine without the need for expensive special or separate machines.
問題点を解決る、ための手段
上記の課題を解決る、ための本発明の手段は、厚肉の管
端を素管の肉厚寸法のまま残し、かつ管端間中央の管部
セ、ないしは片側の管端に隣接る、管部分を延伸により
薄肉に製作る、ことである。Means for Solving the Problems The means of the present invention for solving the above-mentioned problems is to leave the thick-walled pipe ends as they are with the wall thickness of the base pipe, and to remove the central pipe section between the pipe ends. Alternatively, the tube portion adjacent to one end of the tube may be made thinner by stretching.
実施例
図面には管形の素管を冷間変形して管１にる、ための装
置が略示されている。装置の中心線２の各上方には出発
位置の、ないしは変形前の、装置の構成部材と素管もし
くは管自体が示されており、他方中心線２の各下方には
変形実施後の状態の装置と、したがって同様に変形後の
管が示されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings schematically show an apparatus for cold deforming a tube-shaped blank tube into a tube 1. FIG. Above the center line 2 of the device are shown the components of the device and the blank tube or the tube itself in the starting position or before deformation, while below the center line 2 are shown the state after the deformation. The device and therefore also the tube after deformation is shown.
第１図では素管もしくは管１が締付は装置（詳細には図
示せず）の締付はジョー組３内に固定されている。変形
工具４は中心線２の上方に示された位置から中心線２の
下方に示された位置・へと矢印によって示された方向へ
移動る、ことができる。変形工具４の内部には、校正マ
ンＶレル５が挿入されていて、校正マンドレル５ははね
６０作用下にある。管１の他方の側から延伸マンドレル
Ｔを挿入して校正マンドレル５と反対側に位置せしめる
ことができる。延伸マンドレルＴは既に素管内に挿入さ
れていてもよいが、ただし最終的な位置には達していな
い。In FIG. 1, a blank pipe or tube 1 is fixed in a jaw assembly 3 of a clamping device (not shown in detail). The deforming tool 4 can be moved from the position shown above the center line 2 to the position shown below the center line 2 in the direction shown by the arrow. A calibration mandrel 5 is inserted into the interior of the deformation tool 4, and the calibration mandrel 5 is under the action of a spring 60. A stretching mandrel T can be inserted from the other side of the tube 1 and positioned opposite the calibration mandrel 5. The stretching mandrel T may already be inserted into the blank tube, but not yet in its final position.
変形工具４を例えば作業シリンダ（図示せず）によって
図面右側の管端上を進ませると、変形が行なわれ、この
変形した円筒状範囲に限るが、管端外面のジェオメトリ
ーは変形工具のジェオメトリーに相当し、かつ素管内面
のジェオメトリーは校正マンドレル５のジェオメトリー
に相当る、。When the deformation tool 4 is advanced over the tube end on the right side of the drawing, for example by means of a working cylinder (not shown), deformation takes place and, although limited to this deformed cylindrical area, the geometry of the outer surface of the tube end is changed by the geometry of the deformation tool. The geometry of the inner surface of the raw tube corresponds to the geometry of the calibration mandrel 5.
この管端減径の後管１は締付はジョー組３の緊張下にと
ど！り、その際に異形部形成工具８（第２図）を用いて
これを矢印によって示される方向へ第１図で減径された
管端上を進ませることによって異形化る、、すなわち例
えばのこ歯切欠きを形成る、ことができ、こののこ歯切
欠きは後にトルクを伝達る、ためて使用される。After this tube end diameter reduction, the tube 1 is tightened under the tension of the jaw set 3! At that time, the irregular-shaped part forming tool 8 (Fig. 2) is used to advance it in the direction indicated by the arrow over the tube end whose diameter has been reduced in Fig. 1, thereby making it irregular. A serrated notch can be formed, which is later used for transmitting torque.
適切に構成された工具を用いて減径された管端内面に歯
を設けることができることは自明である。It is self-evident that teeth can be provided on the inner surface of the reduced diameter tube end using a suitably configured tool.
第６図では延伸マンドレル１が減径された管端への移行
部に位置した管１の内肩まで挿入されている。管１と延
伸マンドレル７とから成る構成を最終的には固定ストッ
パとしての締付はジョー組３に当たるま工移動させ、次
いで締付はジョー組３を閉じる。延伸工具９を管１に清
って移動させて、材料を所定の寸法だけ延伸させ、その
結果中央の管部分ないしは管端に隣接る、管部分におい
て薄肉が得られ、がっ管１の端部範囲では当初の肉厚が
保持される。In FIG. 6, the stretching mandrel 1 has been inserted up to the inner shoulder of the tube 1 located at the transition to the reduced diameter tube end. The arrangement consisting of the tube 1 and the drawing mandrel 7 is finally moved by clamping as a fixed stop onto the jaw set 3, which is then closed by clamping. The drawing tool 9 is moved through the tube 1 to stretch the material by a predetermined dimension, so that a thin wall is obtained in the tube section adjacent to the central tube section or the tube end, and the end of the tube 1 is stretched. The original wall thickness is maintained in this area.
延伸工具９を引き戻す際に管１が延伸マンドレルＴ上に
付着したままとどまることを保証る、ためには、対向保
持体１１が配置されている。In order to ensure that the tube 1 remains attached to the drawing mandrel T when the drawing tool 9 is pulled back, a counterholder 11 is arranged.
第４図には別の延伸過程が示されている。この実施例で
は延伸は別の延伸工具１２を用いて第６図と同様にして
行われ、かつ他の考えられるすべての延伸操作を代表る
、ものとみなすべきである。FIG. 4 shows another drawing process. In this example, the drawing is carried out in the same manner as in FIG. 6 using a separate drawing tool 12, and should be considered representative of all other possible drawing operations.
第５図には延伸マンドレルＴを引抜く過程が示されてい
る。そのためには締付はショー組３が軽く開かれており
、したがって延伸マンドレル７は支障なく引き戻すこと
ができる。このとき締付はジョー組３は管１のための分
離部材として働く。管１が作業ライン内にとどまるよう
にる、ためＫは、角柱形の受容部材１３が配置されてい
る。受容部材１３は延伸マンドレルＴを引抜く前に下方
から作業ライン内に挿入される。FIG. 5 shows the process of pulling out the stretching mandrel T. For this purpose, the show set 3 is slightly opened during tightening, so that the stretching mandrel 7 can be pulled back without any hindrance. At this time, the jaw set 3 acts as a separating member for the tube 1 during tightening. A prismatic receiving member 13 is arranged in the reservoir K so that the tube 1 remains within the working line. The receiving member 13 is inserted into the work line from below before pulling out the stretching mandrel T.
第６図から第１０図には２番目の管端を付加的に変形る
、方法および他の作業過程が示されている。２番目の管
端を変形る、ためには第６を１８００回転させた後に機
械に改めて送られている、それというのも引続き一連の
加工工程をすべて実施る、ことができるからである。締
付はマンドレル１４を用いて管１は最終的に外方へ向か
って厚くなった管端でもって作業位置へもたらされる。6 to 10 show methods and further steps for additionally deforming the second tube end. In order to deform the second tube end, the sixth tube has been rotated through 1800 revolutions and then sent again to the machine, since it is then possible to carry out the entire series of processing steps. The clamping is done using a mandrel 14 and the tube 1 is finally brought to the working position with the tube end thickening outwards.
減径工具１５と該工具内に挿入された校正マンドレル１
６とを用いて管端直径の精確な減径が達成され、しかも
延伸によって減径された中央の管部分の直径に整合る、
。Diameter reduction tool 15 and calibration mandrel 1 inserted into the tool
6 is used to achieve a precise reduction in the tube end diameter, matching the diameter of the central tube section reduced by stretching.
.
第６図に示された２番目の管端の減径の代わりに該管端
の増径を、例えば第７図に示されているように増径マン
ドレル１７とばね１８を介して増径マンドレル１７ｊり
も先に進む外径寸法決め工具１９とによって行なうこと
ができる。Instead of reducing the diameter of the second tube end as shown in FIG. 6, the diameter of the second tube end can be increased by using an increasing mandrel 17 and a spring 18, for example, as shown in FIG. 17j can also be performed by using the outer diameter sizing tool 19 which advances further.
第８図には別の変形工具２１を用いて２番目の゛管端を
更に減径る、方法が示されている。第１図による変形工
具４と校正マンドレル５を用いた場合には精確に最初の
管端と同じ寸法に減径る、ことができる。FIG. 8 shows how another deformation tool 21 is used to further reduce the diameter of the second tube end. When using the deforming tool 4 and the calibration mandrel 5 according to FIG. 1, it is possible to reduce the diameter precisely to the same dimensions as the original tube end.
第８図による減径の代わりに、ないしはこの減径に付加
的に例えば第９図に示されているようにして校正を行な
うことができる、すなわち管１を校正工具２２を用いて
管１の延伸された直径の全長にわたって校正る、ことが
できる。Instead of the diameter reduction according to FIG. 8 or in addition to this diameter reduction, a calibration can be carried out, for example as shown in FIG. Can be calibrated over the entire length of the stretched diameter.
第１０図には既に最初の管端に対して用いられた異形部
形成工具８を用いて２番目の管端に異形部を設ける工程
が示されている。FIG. 10 shows the step of forming a profile on the second tube end using the profile forming tool 8 already used for the first tube end.
第１１図と第１２図には、第１図から第６図に示された
方法工程によって製作された管１を右側の減径された管
端を除いて残りの金管部分において延伸る、過程が示さ
れている。11 and 12 show a step in which the tube 1 manufactured by the method steps shown in FIGS. 1 to 6 is stretched in the remaining brass section except for the right-hand reduced diameter tube end. It is shown.
第１２図から判るように、延伸マンドレルＴは若干引抜
かれており、引抜く際には僅かに開かれた締付はジョー
組３が分離部材として働く。As can be seen from FIG. 12, the stretching mandrel T has been slightly pulled out, and the jaw set 3 acts as a separating member when the mandrel T is slightly opened when being pulled out.
次いで・ｕｌの延伸減径された部分をマンドレルに締付
け、かつ管の右側の厚肉にされた管端を内径・外径寸法
決め工具２３を用いて同時に、かつ校正しながら増径る
、。Then, tighten the stretched and reduced diameter portion of the ul to the mandrel, and increase the diameter of the thickened tube end on the right side of the tube using the inner and outer diameter dimensioning tools 23 at the same time and while calibrating.
発明の効果
本発明による方法によれば、厚肉の横断面を出発部材に
設け、かつ例えば延伸と減径によって、すなわち材料損
失なしに、しかも後作業なしにより薄い肉厚範囲または
他の横断面を製作る、可能性が得られる。両側の管端を
厚肉にる、場合には当初の肉厚を有る、残りの管部分に
延伸減径過程を実施せず、他方片側の管端を厚肉にる、
場合には残りの全管部分を延伸る、。Effects of the Invention According to the method according to the invention, a thick-walled cross-section can be provided in the starting part and a thinner-walled cross-section or other cross-section can be formed, for example by stretching and diameter reduction, i.e. without material loss and without further working. You can create the possibility. Making the pipe ends on both sides thicker, in some cases the original wall thickness is still the same, or making the other pipe end on one side thicker without carrying out the drawing diameter reduction process on the remaining pipe parts.
Stretch the entire remaining pipe section, in case.
一方の、ないしは両方の管端は直径を減径し得るのみな
らず、必要な場合には薄肉の管部分の外径に比べて大き
な外径に増径る、こともできる。本発明による方法によ
れば、厚肉の管端を有る、管を製作る、際に単に材料の
節約によるだけでも著しい費用の節約が得られ、また従
来の管変形機械の使用によって延伸され、かつ端部で変
形された範囲における著しい強度の増大も得られる。One or both tube ends can not only have a reduced diameter, but can also be increased, if necessary, to a larger outer diameter compared to the outer diameter of the thin-walled tube section. By means of the method according to the invention, significant cost savings are obtained simply due to material savings when producing tubes with thick-walled tube ends, which can also be stretched by the use of conventional tube-forming machines. A significant increase in strength is also obtained in the area deformed at the ends.
本発明にとっては単純な中空体の形状の素材から出発し
てきわめて多種多様な形の加工物を高い寸法精度でもっ
て製作る、ことができ、しかも予め適切に精確に決めら
れた素管ではその他の加工を省略る、ことができる。必
要な場合には素材体が末広がりに広がったために過剰と
なった材料を単に端面で突っ切り切断すればよい。The present invention makes it possible to manufacture workpieces of a wide variety of shapes with high dimensional accuracy starting from a material in the shape of a simple hollow body, and moreover, it is possible to manufacture workpieces of a wide variety of shapes with high dimensional accuracy, and furthermore, with the material pipe properly and accurately determined in advance, other shapes can be produced. It is possible to omit the processing of If necessary, the excess material due to the widening of the blank can simply be cut off at the end face.
第１図は第１０管端を減径る、工程を示した図、第２図
は第１０管端に異形部を設ける過程を示した図、第６図
は中央の薄肉管部分を製作る、ための第１の延伸過程を
示した図、第４図は中央の薄肉の管部分を更に減径る、
だめの第２の延伸過程を示した図、第５図は第１０管端
の仕上げ後の構成を示した図、第６図は第２０管端を減
径る、工程を示した図、第７図は第２０管端を増径る、
工程を示した図、第８図は第２０管端を更に減径る、工
程を示した図、第９図は管を校正る、工程を示した図、
第１０図は第２０管端に異形部を形成る、工程を示した
図、第１１図と第１２図は前に減径された管端を増径る
、工程を示した図である。
１・・・管、２・・・中心線、３・・・締付はジョー組
、４・・・変形工具、５・・・校正マンドレル、６・・
・ばね、Ｔ・・・延伸マンドレル、８・・・異形部形成
工具、９・・・延伸工具、１１・・・対向保持体、１２
・・・延伸工具、１３・・・受容部材、１４・・・締付
はマンドレル、１５・・・減径工具、１６・・・校正マ
ンドレル、１７・・・増径マンドレル、１８・・・ばね
、１９・・・外径寸法決め工具、２１・・・変形工具、
２２・・・校正工具、２３・・・内径・外径寸法決め工
具。Figure 1 shows the process of reducing the diameter of the end of the 10th pipe, Figure 2 shows the process of creating an irregularly shaped part at the end of the 10th pipe, and Figure 6 shows the process of manufacturing the thin-walled pipe section in the center. Figure 4 shows the first drawing process for , further reducing the diameter of the central thin-walled tube section.
Figure 5 is a diagram showing the configuration of the 10th pipe end after finishing; Figure 6 is a diagram showing the process of reducing the diameter of the 20th pipe end; Figure 7 shows increasing the diameter of the 20th tube end.
A diagram showing the process, FIG. 8 is a diagram showing the process of further reducing the diameter of the 20th tube end, FIG. 9 is a diagram showing the process of calibrating the tube,
FIG. 10 is a diagram showing the process of forming a deformed portion at the 20th tube end, and FIGS. 11 and 12 are diagrams showing the process of increasing the diameter of the tube end whose diameter was previously reduced. 1... Pipe, 2... Center line, 3... Jaw assembly for tightening, 4... Deformation tool, 5... Calibration mandrel, 6...
・Spring, T... Stretching mandrel, 8... Irregular part forming tool, 9... Stretching tool, 11... Opposing holder, 12
... Extension tool, 13... Receiving member, 14... Mandrel for tightening, 15... Diameter reducing tool, 16... Calibration mandrel, 17... Diameter increasing mandrel, 18... Spring , 19...Outer diameter dimensioning tool, 21...Deformation tool,
22... Calibration tool, 23... Inner diameter/outer diameter dimensioning tool.
Claims (1)
を有する管を製作するための方法において、厚肉の管端
を素管の肉厚寸法のまま残し、かつ管端間中央の管部分
、ないしは管端に隣接する管部分を延伸により薄肉に製
作することを特徴とする、厚肉の管端を有する管を製作
する方法。 ２、素管から出発して先ず一方の厚肉の管端の内径と外
径とを減径し、次いで中央の、ないしは管端に隣接する
薄肉の管部分の外径を１工程または多工程で延伸するこ
とにより減径する、特許請求の範囲第１項記載の方法。 ３、先ず減径された管端を延伸加工後に再度増径して、
薄肉の管部分の外径よりも大きな外径にする、特許請求
の範囲第１項または第２項記載の方法。 ４、残つた別の厚肉の管端を減径して、薄肉の管部分の
外径にする、特許請求の範囲第１項から第３項までのい
ずれか１つの項記載の方法。 ５、別の厚肉の管端を増径して、薄肉の管部分よりも大
きな外径にする、特許請求の範囲第１項から第３項まで
のいずれか１つの項記載の方法。 ６、別の厚肉の管端の内径と外径とを減径する、特許請
求の範囲第１項から第４項までのいずれか１つの項記載
の方法。 ７、管を全長にわたつて校正する、特許請求の範囲第１
項から第６項までのいずれか１つの項記載の方法。 ８、厚肉の管端の内面および（または）外面に異形部を
形成する、特許請求の範囲第１項から第７項までのいず
れか１つの項記載の方法。[Claims] 1. In a method for manufacturing a pipe having a thick-walled pipe end by cold deforming a tubular raw pipe, the thick-walled pipe end is adjusted to the wall thickness dimension of the raw pipe. 1. A method for manufacturing a tube with thick-walled tube ends, characterized in that the tube ends are left as they are, and the tube section in the center between the tube ends or the tube section adjacent to the tube ends is made thinner by stretching. 2. Starting from the raw pipe, first reduce the inner diameter and outer diameter of one thick-walled pipe end, then reduce the outer diameter of the central or thin-walled pipe portion adjacent to the pipe end in one step or in multiple steps. 2. The method according to claim 1, wherein the diameter is reduced by stretching. 3. First, the diameter of the reduced pipe end is increased again after stretching,
3. The method according to claim 1, wherein the outer diameter is greater than the outer diameter of the thin-walled tube section. 4. The method according to any one of claims 1 to 3, wherein the diameter of the remaining thick-walled tube end is reduced to have the outer diameter of the thin-walled tube section. 5. A method according to any one of claims 1 to 3, in which the diameter of another thick-walled tube end is increased to have a larger outer diameter than the thin-walled tube section. 6. The method according to any one of claims 1 to 4, wherein the inner diameter and outer diameter of another thick-walled tube end are reduced. 7. Claim 1, which calibrates the entire length of the tube
The method described in any one of paragraphs 6 to 6. 8. The method according to any one of claims 1 to 7, wherein a deformed portion is formed on the inner and/or outer surface of a thick-walled tube end.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853506220 DE3506220A1 (en) | 1985-02-22 | 1985-02-22 | METHOD FOR PRODUCING PIPES WITH THICK-WALLED ENDS BY COLD FORMING A TUBULAR BLANK |
| DE3506220.7 | 1985-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61245914A true JPS61245914A (en) | 1986-11-01 |
Family
ID=6263287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61035403A Pending JPS61245914A (en) | 1985-02-22 | 1986-02-21 | Manufacture of pipe with thick pipe end |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS61245914A (en) |
| DE (1) | DE3506220A1 (en) |
| FR (1) | FR2577827A1 (en) |
| GB (1) | GB2171350B (en) |
| IT (1) | IT1186402B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010531735A (en) * | 2007-06-29 | 2010-09-30 | ゲーカーエン ドライブライン インターナショナル ゲゼルシャフト ミト ベシュレンクテル ハフツング | Apparatus and method for axially forming elongated hollow body |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0760265A1 (en) * | 1995-08-26 | 1997-03-05 | Benteler Ag | Tube and its application in the manufacturing of components of vehicle axles and vehicle axle with such a tube |
| FR2782661B1 (en) * | 1998-08-25 | 2000-10-20 | Allevard Ressorts Automobile | METHOD FOR FORMING A TUBULAR TORSION BAR WITH THICK HEADS |
| DE10118032B4 (en) | 2001-04-11 | 2006-08-10 | Gkn Driveline International Gmbh | Method for drawing a pipe by means of a drawing ring |
| DE102004039967B4 (en) | 2004-08-18 | 2006-10-12 | Gkn Driveline International Gmbh | Method for the reverse extrusion of internal profiles |
| DE102004056147B3 (en) * | 2004-11-20 | 2006-08-03 | Gkn Driveline International Gmbh | Reduction of tubes over a stepped mandrel for producing hollow shafts with undercut in one operation |
| DE102006005576A1 (en) * | 2006-02-06 | 2007-08-09 | Knieper, Ursula | Process to manufacture drive shaft or similar with two-part swage and mandrel tool |
| CN103612069A (en) * | 2013-10-24 | 2014-03-05 | 丽水市信毅单向器有限公司 | Method for manufacturing hollow shaft of isolator |
| DE102019103926A1 (en) * | 2019-02-15 | 2020-08-20 | Walter Henrich GmbH | Method and device for the axial forming of a pipe |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB464474A (en) * | 1934-10-25 | 1937-04-16 | American Fork & Hoe Co | Shafts for golf clubs and other sporting implements and methods of making same |
| GB606306A (en) * | 1946-01-11 | 1948-08-11 | Head Wrightson & Co Ltd | Improvements in the manufacture of tubes |
| FR1259364A (en) * | 1958-01-07 | 1961-04-28 | T I Aluminium Ltd | Improvements in tube manufacturing |
| GB1116901A (en) * | 1965-06-23 | 1968-06-12 | George Ansley Mitchell | Methods and apparatus for manufacturing tubular products from tubular blooms |
| DE2812803C2 (en) * | 1978-03-23 | 1982-11-18 | Laeis-Werke Ag, 5500 Trier | Device for upsetting pipe ends, in particular for drill rod pipes with welding neck connectors |
| FR2473916A1 (en) * | 1980-01-22 | 1981-07-24 | Tubes Cie Indle Cale | Cold drawing of hollow drive shaft reduced end spigots - has second spigot using bore mandrels while shaft is forced part way into drawing plates |
| US4454745A (en) * | 1980-07-16 | 1984-06-19 | Standard Tube Canada Limited | Process for cold-forming a tube having a thick-walled end portion |
| FR2534159B1 (en) * | 1982-10-08 | 1986-05-16 | Piercy Jean | PROCESS FOR MANUFACTURING CYLINDRICAL PARTS, ESPECIALLY HOLLOW PARTS, AND MACHINE FOR IMPLEMENTING SAME |
-
1985
- 1985-02-22 DE DE19853506220 patent/DE3506220A1/en not_active Withdrawn
- 1985-12-05 IT IT23107/85A patent/IT1186402B/en active
-
1986
- 1986-02-14 FR FR8602005A patent/FR2577827A1/en active Pending
- 1986-02-19 GB GB08604103A patent/GB2171350B/en not_active Expired
- 1986-02-21 JP JP61035403A patent/JPS61245914A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010531735A (en) * | 2007-06-29 | 2010-09-30 | ゲーカーエン ドライブライン インターナショナル ゲゼルシャフト ミト ベシュレンクテル ハフツング | Apparatus and method for axially forming elongated hollow body |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1186402B (en) | 1987-11-26 |
| GB2171350B (en) | 1988-05-11 |
| GB8604103D0 (en) | 1986-03-26 |
| IT8523107A0 (en) | 1985-12-05 |
| DE3506220A1 (en) | 1986-08-28 |
| FR2577827A1 (en) | 1986-08-29 |
| GB2171350A (en) | 1986-08-28 |
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