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EP1648631B1 - Procede pour produire un profile creux, fendu dans le sens longitudinal et comportant plusieurs segments longitudinaux de differentes sections transversales, a partir d'une plaque de tole - Google Patents

Procede pour produire un profile creux, fendu dans le sens longitudinal et comportant plusieurs segments longitudinaux de differentes sections transversales, a partir d'une plaque de tole Download PDF

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Publication number
EP1648631B1
EP1648631B1 EP04740154A EP04740154A EP1648631B1 EP 1648631 B1 EP1648631 B1 EP 1648631B1 EP 04740154 A EP04740154 A EP 04740154A EP 04740154 A EP04740154 A EP 04740154A EP 1648631 B1 EP1648631 B1 EP 1648631B1
Authority
EP
European Patent Office
Prior art keywords
hollow profile
metal sheet
die
longitudinal
segment
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
EP04740154A
Other languages
German (de)
English (en)
Other versions
EP1648631A1 (fr
Inventor
Lothar HÖMIG
Uwe Kneiphoff
Thomas Flehmig
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Steel AG
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 ThyssenKrupp Steel AG filed Critical ThyssenKrupp Steel AG
Publication of EP1648631A1 publication Critical patent/EP1648631A1/fr
Application granted granted Critical
Publication of EP1648631B1 publication Critical patent/EP1648631B1/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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C37/065—Manufacture of metal sheets, rods, wire, tubes, profiles 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 starting from a specific blank, e.g. tailored blank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0815—Making tubes with welded or soldered seams without continuous longitudinal movement of the sheet during the bending operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes
    • B21C37/185—Making tubes with varying diameter in longitudinal direction conical tubes starting from sheet material

Definitions

  • the invention relates to a method for producing a longitudinally slotted hollow profile, in particular as a precursor of a longitudinally welded hollow profile, from a flat sheet metal blank, which consists of a plurality of longitudinal sections different in cross-section, of which at least one section over its length is increased or decreased.
  • Hollow profiles of this type can be produced in various ways.
  • document US-A-4,148,426 discloses a method for producing a hollow profile from a one-piece planar blank. This blank is first formed U-shaped in a lower die half and then formed with an upper die half to the finished longitudinally slotted hollow profile. In another manufacturing method, the hollow profile is welded together from individual blanks.
  • the hollow profile is made of a one-piece blank.
  • the hollow profile can be widened by hydroforming. If you wanted to produce a hollow profile shape of the example described, then the cross-sectional widening would go fully at the expense of wall thickness. Therefore, this production method is of limited use.
  • the invention is based on the issue to develop a little complex manufacturing process for hollow sections with longitudinally different cross-sections of sheet metal blanks, in which it is only to a limited extent undesirable local material thinning and virtually none Wrinkling comes.
  • the hollow profile should be as homogeneous as possible over its entire surface, in order to be able to be reshaped without damage.
  • the U-shaped deformation takes place already in the first die half, in particular using a correspondingly profiled core.
  • the invention is based on the idea that in the transition areas, where due to the settlement of the hollow section material shortage or material surplus, which could be compensated during the forming of the hollow profile by stretching (thinning) or compression (thickening) of the wall, this lack of material or this excess material the rounded or rounded edge regions is compensated for corresponding material displacement, so that in the die a hollow profile is made even with diametrically different longitudinal sections without significant thinning and thickening in the critical transition areas of a single blank. It will be understood that “rounded” and “rounded” are not strictly arcuate cut edges, but all cut edges are detected that do not have the otherwise sharp corners at the transitions, especially edges that follow a polynomial, continuous curve.
  • the blank can be bent inwardly at the longitudinal edges before forming in the die.
  • the bending radius of the bent longitudinal edges should be at most equal to the smallest radius of curvature of the hollow profile.
  • a hollow profile 1 is formed according to Figure 5, which is composed of three longitudinal sections 2, 3, 4, namely a cylindrical longitudinal section 2 with a small diameter, a conically widening longitudinal section 3 and a cylindrical longitudinal section 4 larger diameter. Accordingly, the blank of the sheet metal blank can be divided into three areas 5, 6, 7. The regions 5 and 7 have a substantially rectangular cross section, while the intermediate region 6 has a substantially trapezoidal cross section.
  • a special feature in This blank 5, 6, 7 consists in that in the transition areas 8, 9 between the areas 5, 6, 7 the otherwise straight cut edges are rounded, namely the cut edges 8a, 8b are rounded off from the smaller rectangular area 5 to the trapezoidal area 6 while the cut edges 9a, 9b are rounded off from the trapezoidal region 6 to the larger rectangular region 7.
  • additional material is made available for the transition region 8, while material is removed for the transition region 9.
  • a lack of material in the regions 8c, 8d of the transition region 8 and a surplus of material in the regions 9c, 9d of the transitional region 9 is compensated, which would result in unwinding of the hollow profile to be formed in the plane.
  • This principle of the provision of material or the removal of material at transition areas 8, 9 which is shown in the embodiment for a simple geometric shape, can be realized even in more complicated hollow profile shapes, even in elliptical, rectangular and various transition areas, for example from round to rectangular and the same.
  • FIG. 1 The reshaping of the blank according to FIG. 1 to the hollow profile of FIG. 5 takes place stepwise.
  • FIG. 2 shows the blank prepared in this way for the actual forming.
  • This blank 5, 6, 7 is then formed with its longitudinally extending central region in a first die half 10a of a later hollow profile fitted die 10a, 10b with the aid of a core 11, so that a U-shaped molding with upright Legs 12a, 12b arises.
  • a first die half 10a of a later hollow profile fitted die 10a, 10b with the aid of a core 11, so that a U-shaped molding with upright Legs 12a, 12b arises.
  • the first die half 10a material is shifted in the transition regions 8, 9, so that it comes only to a very limited extent to compression and thickening of material or thinning in the transition areas.
  • the legs 12a, 12b are bent toward one another with a second die half 10b, if necessary after removal of the core 11, until they bear against the die half 10b when the second die half 10b is lowered, until the die 10a, 10b is complete closed is.
  • a core 11 supported by the sword 13 serves as a centering for the longitudinal edges.
  • the longitudinal edges After removal of the molded to the hollow profile board, the longitudinal edges abut each other and form a linear weldable edge impact.
  • the preformed hollow profile produced in this way is available after longitudinal seam welding for further forming processes, for example hydroforming, in which case it only needs to be deformed comparatively little because of the preform.
  • the sword 13 takes over the management task together with the second die half 10b. It is also understood that the sword 13 can be kept arbitrary, for example, on the second die half 10b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (4)

  1. Procédé de production d'un profilé (1) creux, fendu longitudinalement, en particulier comme préforme d'un profilé creux soudé longitudinalement, à partir d'une plaque de tôle plane, qui comprend plusieurs segments longitudinaux (2, 3, 4) de section différente, parmi lesquels au moins un segment longitudinal (3) s'élargit ou se rétrécit sur sa longueur, avec les caractéristiques suivantes:
    · il est formé à partir d'un flan d'une pièce (5, 6, 7) de la plaque de tôle qui présente, dans chaque région de transition (8, 9) d'une petite section à une section plus grande du profilé creux (1) ultérieur, ou inversement, des bords de segment longitudinal à congé concave, respectivement convexe (8a, 8b, 9a, 9b) pour fournir de la matière de compensation pour une insuffisance, respectivement un excès de matière dans chaque zone de transition (8, 9) lors du formage ultérieur.
    · le flan est déformé en U dans sa région centrale dans le sens longitudinal, avec déplacement de matière pour compenser une insuffisance de matière, respectivement un excès de matière dans chaque zone de transition (8, 9).
    · le flan déformé en U est placé avec sa région fermée dans une première demi-matrice (10a) d'une matrice (10a, 10b) correspondant au profilé creux (1).
    · les ailes (12a, 12b) du flan déformé en U sont rapprochées avec une seconde demi-matrice (10b) de la matrice (10a, 10b), avec insertion d'un organe de guidage (13) pour les bords des segments longitudinaux, la matière dans chaque zone de transition (8, 9) étant déplacée pour compenser une insuffisance de matière, respectivement un excès de matière.
    · démoulage du profilé creux (1).
  2. Procédé selon la revendication 1, caractérisé en ce que la déformation en U du flan (5, 6, 7) dans la première demi-matrice (10a) est produite en particulier en utilisant un noyau (11) profilé de manière correspondante.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le flan (5, 6, 7) est cintré vers l'intérieur à ses bords longitudinaux (5a, 5b, 6a, 6b, 7a, 7b), avant déformation dans la matrice (10a, 10b).
  4. Procédé selon la revendication 3, caractérisé en ce que le rayon de cintrage des bords longitudinaux cintrés (5a, 5b, 6a, 6b, 7a, 7b) est au maximum identique au plus petit rayon de courbure du profilé creux (1).
EP04740154A 2003-07-01 2004-06-22 Procede pour produire un profile creux, fendu dans le sens longitudinal et comportant plusieurs segments longitudinaux de differentes sections transversales, a partir d'une plaque de tole Expired - Lifetime EP1648631B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10329424A DE10329424B4 (de) 2003-07-01 2003-07-01 Verfahren zum Herstellen eines längsgeschlitzten Hohlprofils mit mehreren, im Querschnitt verschiedenen Längsabschnitten aus einer ebenen Blechplatine
PCT/EP2004/006725 WO2005002753A1 (fr) 2003-07-01 2004-06-22 Procede pour produire un profile creux, fendu dans le sens longitudinal et comportant plusieurs segments longitudinaux de differentes sections transversales, a partir d'une plaque de tole

Publications (2)

Publication Number Publication Date
EP1648631A1 EP1648631A1 (fr) 2006-04-26
EP1648631B1 true EP1648631B1 (fr) 2007-10-24

Family

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Family Applications (1)

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EP04740154A Expired - Lifetime EP1648631B1 (fr) 2003-07-01 2004-06-22 Procede pour produire un profile creux, fendu dans le sens longitudinal et comportant plusieurs segments longitudinaux de differentes sections transversales, a partir d'une plaque de tole

Country Status (10)

Country Link
US (1) US7637135B2 (fr)
EP (1) EP1648631B1 (fr)
JP (1) JP4713471B2 (fr)
CN (1) CN1816402B (fr)
AT (1) ATE376462T1 (fr)
CA (1) CA2537664A1 (fr)
DE (2) DE10329424B4 (fr)
ES (1) ES2295876T3 (fr)
PT (1) PT1648631E (fr)
WO (1) WO2005002753A1 (fr)

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CN112277140B (zh) 2015-12-28 2022-08-30 初级模具和建筑用品公司 用于在可固化材料中形成图案的模板衬垫及其使用方法
JP6756628B2 (ja) 2017-01-17 2020-09-16 フタバ産業株式会社 管体成形方法
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Also Published As

Publication number Publication date
WO2005002753A1 (fr) 2005-01-13
CN1816402B (zh) 2011-12-14
US7637135B2 (en) 2009-12-29
ATE376462T1 (de) 2007-11-15
DE502004005330D1 (de) 2007-12-06
DE10329424A1 (de) 2005-01-27
CA2537664A1 (fr) 2005-01-13
PT1648631E (pt) 2008-02-01
JP2009513354A (ja) 2009-04-02
US20070175261A1 (en) 2007-08-02
ES2295876T3 (es) 2008-04-16
EP1648631A1 (fr) 2006-04-26
DE10329424B4 (de) 2005-04-28
JP4713471B2 (ja) 2011-06-29
CN1816402A (zh) 2006-08-09

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