EP1184101B1 - Procédé pour former des articles tubulaires creux métalliques - Google Patents
Procédé pour former des articles tubulaires creux métalliques Download PDFInfo
- Publication number
- EP1184101B1 EP1184101B1 EP01117698A EP01117698A EP1184101B1 EP 1184101 B1 EP1184101 B1 EP 1184101B1 EP 01117698 A EP01117698 A EP 01117698A EP 01117698 A EP01117698 A EP 01117698A EP 1184101 B1 EP1184101 B1 EP 1184101B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow body
- tubular hollow
- accordance
- phases
- annealed
- 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.)
- Expired - Lifetime
Links
Images
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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- 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
- B21D41/02—Enlarging
Definitions
- the invention relates to a method for deforming tubular hollow bodies made of metal according to the preamble of patent claim 1.
- EP 0 372 360 A2 discloses mechanically pre-expanding a hollow body before it is hydro-formed. However, details of mechanical pre-expanding are not disclosed.
- the invention is thus based on the object to enable in a simple manner larger changes in the cross section within a tubular hollow body.
- the tubular hollow body Due to the upstream processing phase, the tubular hollow body can already be impressed with a preliminary cross-sectional shape, which tends to the final cross-sectional shape. It is achieved by the subsequent annealing that for hydro forming again the maximum Umformweg is available. In the final hydroforming, a final cross-sectional shape can thus be achieved which, compared with the original cross-sectional shape of the tubular hollow body after longitudinal seam welding, is considerably above the previously attainable maximum values.
- the machining phases can be mechanically partially widened and soft annealing performed several times in succession. As a result, even larger forming paths can be achieved.
- tubular hollow body can also be annealed prior to the upstream processing phase.
- solidifications are eliminated by the forming process to a closed tube and achieved a high deformation reserve for the upstream processing phases.
- the partial widening of the tubular hollow body can be carried out at those points where the greatest change in the cross section occurs after hydroforming in relation to the starting cross section.
- the starting point is a tubular hollow body 10 made of aluminum with a constant circular cross-sectional area, as shown in a).
- This hollow body 10 is now partially widened by a machining tool, here by a conical mandrel 12, which is driven axially into the hollow body 10.
- a conical mandrel 12 which is driven axially into the hollow body 10.
- an expandable mandrel is used, which is first inserted, then spread and then driven axially over a limited distance.
- the expanded hollow body 10 ' as shown in b), annealed at about 300 degrees Celsius.
- hydroforming takes place in a die 14.
- the widened hollow body 10 ' is inserted into the die 14, the interior of which represent the future outer dimensions of the hollow body 10'.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Heat Treatment Of Articles (AREA)
- Forging (AREA)
Claims (5)
- Procédé pour le moulage de pièces creuses (10) en métal ayant une forme tubulaire, en particulier en aluminium, dans lequel, postérieurement à la transformation d'un produit demi-élaboré ayant une forme de plateau en un profil transversal fermé et, une fois réalisée la couture longitudinalement soudée des arêtes situées, l'une face à l'autre, du produit demi-élaboré, la pièce creuse ayant une forme tubulaire déjà formée est détrempée et finalement, elle est hydrauliquement transformée en une matrice (14) par un moyen introduit dans la pièce creuse, caractérisé en ce que la pièce creuse, ayant une forme tubulaire, (10) est, tout d'abord, , partiellement élargie, de façon mécanique, lors d'une étape d'élaboration préalable et, par la suite, celle-ci est détrempée à la fois qu'un mandrin élargible est employé, lequel est, tout d'abord, introduit de façon axiale et, par la suite, celui-ci est élargit à la fois qu'il continue à être poussé, de façon axiale, le long d'un parcours limité.
- Procédé, conformément à la revendication 1, caractérisé en ce que les étapes d'élaboration de l'élargissement partiel, de forme mécanique, et le détrempage mené à bout, par la suite, sont réalisés à plusieurs reprises, de façon consécutive.
- Procédé, conformément aux revendications 1 ou 2, caractérisé en ce que la pièce creuse, ayant une forme tubulaire, (10) est également détrempée avant de l'étape d'élaboration préalable.
- Procédé, conformément à l'une des revendications 1 à 3, caractérisé en ce que l'élargissement partiel de la pièce creuse, ayant une forme tubulaire, est mené à bout à partir des positions dans lesquelles est réalisée la plus grande modification de la coupe transversale, postérieurement à la transformation hydraulique face à la section transversale initiale.
- Procédé, conformément à l'une des revendications 1 à 4, caractérisé en ce qu'entre l'étape d'élaboration du détrempage et la transformation hydraulique, sont menées à bout d'autres étapes d'élaboration comme le cintrage mécanique et le prémoulage mécanique.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10042465A DE10042465C2 (de) | 2000-08-29 | 2000-08-29 | Verfahren zum Verformen von rohrförmigen Hohlkörpern aus Metall |
DE10042465 | 2000-08-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1184101A2 EP1184101A2 (fr) | 2002-03-06 |
EP1184101A3 EP1184101A3 (fr) | 2002-12-11 |
EP1184101B1 true EP1184101B1 (fr) | 2006-07-05 |
Family
ID=7654222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01117698A Expired - Lifetime EP1184101B1 (fr) | 2000-08-29 | 2001-07-25 | Procédé pour former des articles tubulaires creux métalliques |
Country Status (6)
Country | Link |
---|---|
US (1) | US6826943B2 (fr) |
EP (1) | EP1184101B1 (fr) |
AT (1) | ATE332198T1 (fr) |
DE (2) | DE10042465C2 (fr) |
DK (1) | DK1184101T3 (fr) |
ES (1) | ES2267636T3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008046052A1 (de) | 2008-09-08 | 2010-03-18 | Benteler Automobiltechnik Gmbh | Verfahren zur Herstellung eines rohrförmigen Stabilisators |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI111347B (fi) * | 2000-01-28 | 2003-07-15 | Uponor Innovation Ab | Menetelmä ja laitteisto muhvillisen putken muodostamiseksi ja muhvillinen putki |
DE10058592A1 (de) * | 2000-11-25 | 2002-06-06 | Bosch Gmbh Robert | Werkstück |
US7013697B2 (en) | 2001-07-05 | 2006-03-21 | Magna Structural Systems, Inc. | Method for expanding a tubular blank |
GB2380958B (en) * | 2001-10-18 | 2004-12-15 | Dana Corp | Method of manufacturing an axially collapsible driveshaft |
DE10224647A1 (de) * | 2002-06-03 | 2003-12-18 | Ulrich Huperz Schweistechnik G | Lanzanfang für ein Gasleitsystem |
US7140226B2 (en) * | 2002-08-05 | 2006-11-28 | Giant Manufacturing Co., Ltd. | Methods for making a bicycle frame part having a disproportionally enlarged end section |
US7431317B2 (en) * | 2002-08-05 | 2008-10-07 | Giant Manufacturing Co., Ltd. | Bicycle frame part having a disproportionally enlarged end section and process for making the same |
US7128558B2 (en) * | 2002-08-09 | 2006-10-31 | The Boeing Company | Post-forming of thermoplastic ducts |
US7827839B2 (en) * | 2002-11-08 | 2010-11-09 | Sumitomo Metal Industries, Ltd. | Profile element pipe for hydraulic bulging, hydraulic bulging device using the element pipe, hydraulic bulging method using the element pipe, and hydraulically bulged product |
DE10312028B4 (de) * | 2003-03-18 | 2005-07-28 | Tower Automotive Hydroforming Gmbh & Co. Kg | Verfahren zur Herstellung von Bauteilen |
DE102005007997B3 (de) * | 2005-02-19 | 2005-12-08 | Tower Automotive Hydroforming Gmbh & Co. Kg | Verfahren und Einrichtung zur Herstellung von Bauteilen |
US20070187437A1 (en) * | 2006-02-10 | 2007-08-16 | Nordson Corporation | Dispensing tip for liquid dispensing systems and method of making the same |
US7421359B2 (en) * | 2006-06-05 | 2008-09-02 | Seagate Technology Llc | Detecting back electromotive force voltage |
DE102007037835B3 (de) * | 2007-08-10 | 2009-02-12 | Deutsches Elektronen-Synchrotron Desy | Verfahren und Vorrichtung zur Herstellung von schweissnahtlosen Hochfrequenzresonatoren |
DE102010051997A1 (de) * | 2010-11-19 | 2012-05-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und Vorrichtung zur Herstellung eines hohlen Bauteils und ein hohles Bauteil |
DE102013109880B4 (de) | 2012-09-10 | 2016-11-03 | National Research Council Of Canada | Reibungsarmer Endennachschub beim Innenhochdruckumformen |
CN104646480B (zh) * | 2015-03-02 | 2016-09-28 | 安徽工业大学 | 一种轻合金变径管成形的方法及装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1980264A (en) * | 1932-01-16 | 1934-11-13 | Fulton Sylphon Co | Method of corrugating tubes |
US3247581A (en) * | 1962-02-05 | 1966-04-26 | Calumet & Hecla | Method of forming a conduit bend |
GB1370700A (en) * | 1972-03-18 | 1974-10-16 | Gen Motors Ltd | Forming transverse corrugations in a tubular blank |
SU1175592A1 (ru) * | 1984-02-22 | 1985-08-30 | Anatolij G Pashkevich | "cпocoб шtamпobkи пoлыx дetaлeй из tpубhыx зaгotobok" |
DE3906957A1 (de) * | 1988-12-05 | 1990-09-06 | Kuhn Rainer | Verfahren zur herstellung von rohrartigen bauteilen |
DE4142325C2 (de) * | 1991-12-20 | 1996-06-13 | Bayerische Motoren Werke Ag | Verfahren zum Herstellen von Fahrwerksträgern |
DE4427201C2 (de) * | 1993-11-26 | 1996-09-12 | Ges Innenhochdruckverfahren | Verfahren zur Herstellung von hohlen Nockenwellen |
US6260401B1 (en) * | 1997-12-15 | 2001-07-17 | Bestex Kyoei Co., Ltd. | Method of molding high expansion pipe and the high expansion pipe |
-
2000
- 2000-08-29 DE DE10042465A patent/DE10042465C2/de not_active Revoked
-
2001
- 2001-07-25 ES ES01117698T patent/ES2267636T3/es not_active Expired - Lifetime
- 2001-07-25 DK DK01117698T patent/DK1184101T3/da active
- 2001-07-25 AT AT01117698T patent/ATE332198T1/de not_active IP Right Cessation
- 2001-07-25 DE DE50110386T patent/DE50110386D1/de not_active Expired - Lifetime
- 2001-07-25 EP EP01117698A patent/EP1184101B1/fr not_active Expired - Lifetime
- 2001-08-28 US US09/942,268 patent/US6826943B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008046052A1 (de) | 2008-09-08 | 2010-03-18 | Benteler Automobiltechnik Gmbh | Verfahren zur Herstellung eines rohrförmigen Stabilisators |
DE102008046052B4 (de) * | 2008-09-08 | 2011-10-20 | Benteler Automobiltechnik Gmbh | Verfahren zur Herstellung eines rohrförmigen Stabilisators |
Also Published As
Publication number | Publication date |
---|---|
DE10042465C2 (de) | 2002-08-01 |
ES2267636T3 (es) | 2007-03-16 |
DK1184101T3 (da) | 2006-10-23 |
DE10042465A1 (de) | 2002-03-28 |
US20020073758A1 (en) | 2002-06-20 |
DE50110386D1 (de) | 2006-08-17 |
EP1184101A3 (fr) | 2002-12-11 |
ATE332198T1 (de) | 2006-07-15 |
EP1184101A2 (fr) | 2002-03-06 |
US6826943B2 (en) | 2004-12-07 |
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