EP0955107B1 - Procédé de déformation d'un tube de départ à section circulaire dans un profilé en forme de U et dispositif pour la réalisation dudit procédé - Google Patents

Procédé de déformation d'un tube de départ à section circulaire dans un profilé en forme de U et dispositif pour la réalisation dudit procédé Download PDF

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Publication number
EP0955107B1
EP0955107B1 EP99108220A EP99108220A EP0955107B1 EP 0955107 B1 EP0955107 B1 EP 0955107B1 EP 99108220 A EP99108220 A EP 99108220A EP 99108220 A EP99108220 A EP 99108220A EP 0955107 B1 EP0955107 B1 EP 0955107B1
Authority
EP
European Patent Office
Prior art keywords
die
punch
shaped
abutment
profile
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
Application number
EP99108220A
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German (de)
English (en)
Other versions
EP0955107A1 (fr
Inventor
Rainer Dipl.-Ing. Hansen
Georg Wecker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Benteler Deustchland GmbH
Original Assignee
Benteler Deustchland GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Benteler Deustchland GmbH filed Critical Benteler Deustchland GmbH
Publication of EP0955107A1 publication Critical patent/EP0955107A1/fr
Application granted granted Critical
Publication of EP0955107B1 publication Critical patent/EP0955107B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • 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
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars

Definitions

  • a Output tube placed on the edges of an open die which corresponds to the outer contour of the U-shaped profile Has inner contour.
  • the opening dimension at the mouth of the die is generally smaller than that Output pipe diameter.
  • a strip-like Patrix which has a convexly curved tip then from the side opposite the die Output tube pressed in.
  • the patrix has an outer one Contour that corresponds to the inner contour of the profile.
  • the outlet pipe must be formed in the generally about a third of the pipe diameter over the Edges of the die. This creates immediately before the end position of the patrix a situation for the so-called ear covers in such a way that due to resulting moments of resistance on the ear covers the material below on the inside is stretched.
  • This stretch comes in particular in that by moving the male part together and die the material in the on both sides available gap between male and female due to high friction on the walls of patrix and Matrix in the sliding and rolling movement is hindered.
  • the invention is based on the prior art
  • the task is based on a method for forming an initial tube with a circular cross-section in a U-shaped Profile and a device for performing the method to provide, according to which a significant Reduction of the transverse stress on the material achieved is and thus the production is made more economical can be.
  • the front end is made using shaped mandrels positioned output pipe with a circumferential half supported on an abutment at least in some areas.
  • Support is understood to mean at least in some areas, in which the support of the output pipe opposite longitudinal edges avoided and that Output tube in a bowl-like receptacle is placed.
  • the strip-like patrix driven against the exit pipe and then this from the the abutment opposite side by means of Male pressed into a U shape. This press-in process takes place until the circumferential half loaded by the patrix of the output pipe over its inner surface with the inner surface of the circumferential half supported on the abutment came into contact.
  • the output pipe is through the patrix is initially pressed somewhat oval.
  • the exit tube under the Male until in the end position of the male in particular linear contact of the inner surfaces takes place. Due to the special embedding of the outlet pipe in the abutment the envelopes next to the patrix are relative large loops. This will make one excessive narrow deformation of the pipe material avoided, the the main cross-loading of the material is severe is reduced.
  • the male and one are then Die with one of the outer contour of the U-shaped to be produced Profile corresponding inner contour relative to each other relocated. This shift of male and female until the inner surface of the Half of the circumference loaded on the inner surface of the male the circumferential half supporting itself in the inner contour of the die form-fitting to the system. Only that both ear covers still form loops in the smallest size.
  • the U-shaped profile is subjected to calibration. This can vary depending on the contour and functionality of the fabricated Profile. This is another one Significant reduction in the transverse stress on the material connected.
  • the method consists in the features of claim 3 the outlet pipe is dimensioned smaller than 180 ° Half of the circumference on a circular trough one-piece abutment supported. This is with associated with the advantage that the ear covers can initially train with relatively large loops.
  • the patrix is then moved against the exit tube and pressed this in a U shape until the contact of the inner surfaces.
  • the abutment with the trough replaced by a die with a U-shaped inner contour, which corresponds to the outer contour of the U-profile. Then the patrix and the matrix are shifted relative to each other, until that, with the exception of the ear flaps, the inner surface the circumferential half loaded by the male part on the inner surface the circumferential half lying in the die comes to the system in a form-fitting manner.
  • Another advantageous embodiment of the invention Method is in the features of claim 4 sees. Then a three-part matrix is used as an abutment used at the same time in the second forming step defines the outer contour of the profile.
  • the starting pipe is over three Areas of a circumferential half offset by approximately 90 ° to one another supported on the die and the one opposite the die Half of the circumference through the patrix U-shaped indented until the inner surfaces are in line contact to step. Now all parts of the die and the The patrix is displaced relative to each other and the U-shaped one Profile created.
  • the loop-shaped ear covers are subject to a smooth rolling process because the roll radii can be set generously. With regard on the fact that the ear flaps on the profile none There is no contact with the tools Friction. The rolling takes place undisturbed.
  • the objective solution of the basis of the invention Task becomes according to a first embodiment seen in the features of claim 6.
  • a strip-like male with a convex curvature On the one hand, an abutment with a circular section Trough and on the other hand a die with a U-shaped inner contour and an arcuate diverging shape Mouth sections interchangeable and relatively relocatable assigned opposite.
  • claim 7 is a variant of an inventive Device described.
  • a strip-like Male with a convexly curved tip also function of an abutment, three-part matrix assigned relatively displaceable opposite.
  • the die is made up of one facing the patrix Support jaw and in itself the patrix supporting counter bearing supporting side mold jaws together.
  • the shaped jaws have the lateral outer contours of the later profile while the support jaw the arcuate area between the legs of the profile shaped.
  • the patrix also has trough-like depressions for the side envelopes.
  • the support jaw is preferably roof-shaped designed and her top is arched Provide trough.
  • the contour of the trough corresponds to the curvature of the arcuate section of the profile.
  • FIG. 1 in FIG. 1 denotes an output pipe made of steel, which has a circular cross section and deformed into a U-shaped profile 2 according to FIG. 3 shall be.
  • the output pipe 1 is first used according to FIG a circumferential half 3 in a circular trough one-piece abutment 4 placed.
  • the trough 7 is dimensioned smaller than 180 °.
  • the pipe axis 5 is thereby at a distance above the mouth edges 6 of the trough 7.
  • the distance between the mouth edges 6 is less than the diameter of the outlet pipe 1.
  • outlet pipe 1 is shown in FIG Way by positioned in the foreheads Shaped mandrels held in the position shown in Figure 1.
  • abutment 4 is a strip-shaped Male 8 with a convex curved tip 9. Die The contour of the patrix 8 corresponds to the inner contour of the one to be produced Profile 2.
  • FIGs 4 and 5 is a device for forming an outlet tube 1 which is circular in cross section Steel shown to a U-shaped profile 2, which has a three-part die 21, which also has an abutment function perceives.
  • the die 21 is composed of a central support jaw 22 and two side mold jaws 23 together.
  • the Support jaw 22 is roof-shaped with the same slope Inclined surfaces 24 and an arcuate trough 25 in the crest 26. Are supported on the inclined surfaces 24 Inclined surfaces 27 of the mold jaws 23, which on the other hand with sloping outer surfaces 28 on diverging inner surfaces 29 one also a strip-like male 8 support supporting thrust bearing 30.
  • the inside 31 of the mold jaws 23 are on the outer contour of the legs 32 adapted to the U-shaped profile.
  • the trough 25 in the Support jaw 23 is on the contour of the arcuate portion 33 of profile 2 adjusted.
  • the mold jaws 23 By subsequent further relative displacement of the male part 8 and die 21, the mold jaws 23 also being the same shift relative to the support jaw 22 and the counter bearing 30, then the cross-sectional contour of the profile 2 according to Figure 5 generated. It can be seen here that the loop-shaped ear covers 13 in the depressions 35 the mold jaws 23 and in recesses 20 on the male 8 inlay.
  • the device according to FIGS. 4 and 5 is also used the position of the output tube 1 in the position shown in FIG 4 by retracted into the front ends of the output tube 1 Shaped mandrels not shown during the Pre-deformation guaranteed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)

Claims (9)

  1. Procédé de déformation d'un tube de départ (1) à section transversale circulaire, pour obtenir un profilé (2) en forme de U, procédé dans lequel la surface intérieure (11) d'une moitié (10) du périmètre dudit tube de départ (1) repose par concordance de formes contre la surface intérieure (12) de la moitié. opposée (3) dudit périmètre, à l'exception de lobes latéraux (13) en forme de boucles, sachant que le tube de départ (1), positionné aux extrémités frontales par des mandrins de mise en forme, prend tout d'abord appui au moins par zones sur une contre-butée (4, 21), par une moitié (3) du périmètre, puis est enfoncé en forme de U par un poinçon (8) du type barrette, situé frontalement en vis-à-vis de la contre-butée (4, 21) et pourvu d'une coiffe (9) à courbure convexe, jusqu'à ce que la moitié (10) du périmètre dudit tube de départ (1), contrainte par ledit poinçon (8), vienne au contact de la moitié (3) du périmètre diamétralement opposée, après quoi le poinçon (8), et une matrice (14, 21) présentant la configuration externe du profilé (2), sont déplacés en direction l'un de l'autre jusqu'à l'achèvement dudit profilé (2) en U, avec déplacement adapté des mandrins de mise en forme demeurant dans les extrémités frontales.
  2. Procédé selon la revendication 1, caractérisé par le fait que le profilé (2) en U est soumis à un calibrage.
  3. Procédé selon la revendication 1 ou 2, caractérisé par le fait que le tube de départ (1) prend appui sur une contre-butée monobloc (4) offrant une cuvette en forme de secteur circulaire, puis la moitié opposée (10) du périmètre est enfoncée en forme de U par le poinçon (8), la contre-butée (4) étant ensuite remplacée par une matrice (14) de configuration interne (15) en U, et le tube de départ (16) enfoncé en U étant soumis à un formage définitif, sous l'action du poinçon (8) ainsi que de la matrice (14), pour obtenir le profilé (2) en U.
  4. Procédé selon la revendication 1 ou 2, caractérisé par le fait que le tube de départ (1) prend appui, par l'intermédiaire de trois régions d'une moitié (3) du périmètre qui sont mutuellement décalées d'environ 90°, sur une matrice (21) en trois parties remplissant la fonction d'une contre-butée, puis la moitié opposée (10) du périmètre est enfoncée en U par le poinçon (8), après quoi ledit poinçon (8) et les trois parties (22, 23) de ladite matrice (21) sont animés d'un mouvement relatif, et le tube de départ (16) enfoncé en U est soumis à un formage définitif pour obtenir le profilé (2) en U.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé par le fait que des empreintes sont ménagées dans le profilé (2), dans la position extrême du poinçon (8), au moyen de coussins de serre-flans ou autres techniques d'usinage.
  6. Dispositif pour la mise en oeuvre du procédé selon l'une des revendications 1 à 3, caractérisé par le fait que, d'une part, une contre-butée (4) offrant une cuvette (7) en forme de secteur circulaire et, d'autre part, une matrice (14) possédant une configuration interne (15) en U, ainsi que des zones d'embouchure (17) divergeant en arc de cercle, sont associées à un poinçon (8) du type barrette pourvu d'une coiffe (9) à courbure convexe, en vis-à-vis dudit poinçon, avec faculté de remplacement et de mouvement relatif.
  7. Dispositif pour la mise en oeuvre du procédé selon l'une des revendications 1, 2 ou 4, caractérisé par le fait qu'une matrice (21) en trois parties, remplissant également la fonction d'une contre-butée, est associée à un poinçon (8) du type barrette pourvu d'une coiffe (9) à courbure convexe, en vis-à-vis dudit poinçon, avec faculté de mouvement relatif, sachant que ladite matrice (21) se compose d'une mâchoire d'appui (22) faisant face audit poinçon (8), et de deux mâchoires latérales de formage (23) prenant appui, d'une part, contre ladite mâchoire d'appui (2) et, d'autre part, contre une butée (30) portant ledit poinçon (8).
  8. Dispositif selon la revendication 7, caractérisé par le fait que la mâchoire d'appui (2) revêt la forme d'une toiture, et son sommet (26) est muni d'une cuvette (25) en arc de cercle.
  9. Dispositif selon la revendication 7 ou 8, caractérisé par le fait que les mâchoires latérales de formage (23) sont pourvues de surfaces inclinées (27, 28) prenant appui contre des surfaces inclinées (24) de la mâchoire d'appui (22), configurées en toiture, et contre des surfaces intérieures divergentes (29) de la butée (30).
EP99108220A 1998-05-07 1999-04-27 Procédé de déformation d'un tube de départ à section circulaire dans un profilé en forme de U et dispositif pour la réalisation dudit procédé Expired - Lifetime EP0955107B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19820415 1998-05-07
DE19820415A DE19820415C1 (de) 1998-05-07 1998-05-07 Verfahren zum Umformen eines Ausgangsrohrs mit kreisrundem Querschnitt in ein U-förmiges Profil und Vorrichtung zur Durchführung des Verfahrens

Publications (2)

Publication Number Publication Date
EP0955107A1 EP0955107A1 (fr) 1999-11-10
EP0955107B1 true EP0955107B1 (fr) 2002-12-04

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ID=7866973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99108220A Expired - Lifetime EP0955107B1 (fr) 1998-05-07 1999-04-27 Procédé de déformation d'un tube de départ à section circulaire dans un profilé en forme de U et dispositif pour la réalisation dudit procédé

Country Status (5)

Country Link
US (1) US6119501A (fr)
EP (1) EP0955107B1 (fr)
BR (1) BR9901459A (fr)
CZ (1) CZ297046B6 (fr)
DE (2) DE19820415C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102728744A (zh) * 2012-07-04 2012-10-17 上海依赛工业有限公司 汽车后盖弯管成形方法及焊接专用定位治具

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WO2003101767A1 (fr) * 2002-05-31 2003-12-11 Magna International Inc. Bras de commande hydroforme
KR100554310B1 (ko) * 2004-09-21 2006-02-24 주식회사화신 자동차 후륜 현가계용 토션빔의 빔 제조장치
JP4211722B2 (ja) * 2004-10-07 2009-01-21 トヨタ自動車株式会社 トーションビーム式サスペンション装置
EP1843907A4 (fr) 2005-03-16 2008-07-30 Magna Int Inc Essieu a poutre torsadee avec barre de torsion integrale
US20100122747A1 (en) * 2007-09-10 2010-05-20 Hydrogen Discoveries, Inc. Composite Structures for Hydrogen Storage and Transfer
JP2009274077A (ja) 2008-05-12 2009-11-26 Nippon Steel Corp 異形断面筒状部材のプレス成形方法とその方法により成形した異形断面筒状部材
CA2644464C (fr) 2008-10-17 2010-04-20 Arcelormittal Tubular Products Canada Inc. Essieu a torsion a epaisseur de paroi progressive
JP5287259B2 (ja) * 2009-01-07 2013-09-11 Ｊｆｅスチール株式会社 異形断面管の製造方法および装置
JP5992863B2 (ja) * 2013-04-25 2016-09-14 東京瓦斯株式会社 管状物圧縮装置及び管状物圧縮方法
JP2016022479A (ja) * 2014-07-16 2016-02-08 株式会社ワイテック トーションビームの成形金型
US20170043388A1 (en) * 2014-09-17 2017-02-16 Szuba Consulting, Inc. Cost-reduced torque converter shrouds
JP6296211B2 (ja) * 2016-03-30 2018-03-20 新日鐵住金株式会社 トーションビーム製造方法及びトーションビーム製造装置

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Publication number Priority date Publication date Assignee Title
CN102728744A (zh) * 2012-07-04 2012-10-17 上海依赛工业有限公司 汽车后盖弯管成形方法及焊接专用定位治具

Also Published As

Publication number Publication date
CZ297046B6 (cs) 2006-08-16
US6119501A (en) 2000-09-19
DE59903620D1 (de) 2003-01-16
CZ9901650A3 (cs) 2000-10-11
BR9901459A (pt) 2000-01-04
DE19820415C1 (de) 1999-09-16
EP0955107A1 (fr) 1999-11-10

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