EP1491271A1 - Procédé de fabrication d'un élément de support d'une carroserie d'automobile et ébauche pour la fabrication d'un tel élément - Google Patents

Procédé de fabrication d'un élément de support d'une carroserie d'automobile et ébauche pour la fabrication d'un tel élément Download PDF

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Publication number
EP1491271A1
EP1491271A1 EP04013616A EP04013616A EP1491271A1 EP 1491271 A1 EP1491271 A1 EP 1491271A1 EP 04013616 A EP04013616 A EP 04013616A EP 04013616 A EP04013616 A EP 04013616A EP 1491271 A1 EP1491271 A1 EP 1491271A1
Authority
EP
European Patent Office
Prior art keywords
sections
depressions
preform
approximately
side wall
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.)
Granted
Application number
EP04013616A
Other languages
German (de)
English (en)
Other versions
EP1491271B1 (fr
Inventor
Erich Haase
Volker Jonatzke
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.)
ITW Siewer GmbH
Original Assignee
ITW Siewer 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 ITW Siewer GmbH filed Critical ITW Siewer GmbH
Publication of EP1491271A1 publication Critical patent/EP1491271A1/fr
Application granted granted Critical
Publication of EP1491271B1 publication Critical patent/EP1491271B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00

Definitions

  • the invention relates to a method for producing a support plate for an automobile body according to claim 1.
  • a column-like support plate construction for automobiles has become known, which has two parallel spaced side walls and a center wall connecting the side walls on one side, the center wall running obliquely downwards.
  • flange sections are bent outwards at right angles.
  • the lower flange sections are supported on the floor panel of the body, while the upright lateral flange sections are connected to a pillar of the body.
  • a vertical channel is created between the column and the support plate for a filling line for the tank of the automobile.
  • the support plate also serves to attach means to which, for. B. the panel is attached, seat belts are strapped and the like.
  • the invention has for its object to provide a method for producing a support plate for an automobile body, which ensures a higher production number per unit of time while saving material and lower quality of the sheet material to be used.
  • two elongated, approximately triangular depressions are first formed in the flat material without the material thinning outside or inside the depression.
  • the next step is to punch out the preform which already has the depressions.
  • the recesses lie on a bending line between the middle wall and side wall section in the lower region of the wall sections and extend into the flange section up to its free edge. The bending line around which the lower flanges are bent relative to the wall sections therefore crosses the depressions between their ends.
  • the flange sections are bent over from the preform approximately by 90 ° to the wall sections.
  • the side wall sections are bent with respect to the central wall section, again approximately 90 °.
  • the described method is relatively complex in that it is required for reasons of stability that the lower flange sections are continuous and are not interrupted by incisions or the like. Unless special measures are taken, there is a risk of tearing between the flange sections at the corners.
  • shaping the depressions on the other hand, a uniform distribution of the excess material initially present is achieved, the depressions in the region of the flange sections having disappeared after the shaping process has ended and in the region of the side wall or middle wall section being absorbed by the bend which occurs when the side wall sections are bent over , The bending is not carried out along a sharp edge, but rather is bent over to a certain radius in order to avoid load peaks on the support plate.
  • the invention also provides a preform for a support plate which has the geometry already described above.
  • the preform has two elongated depressions of approximately triangular contour, without thinning of the material outside or inside the depressions. These depressions are in turn reshaped when the final shape of the support plate is produced after the flange sections and the side wall sections have been bent over.
  • the support plate 10 shown in perspective in FIG. 1 has a central wall section 12 and side wall sections 14 and 16.
  • the central wall section 12 extends obliquely downward, and the side wall sections 14, 16 are connected on the side of the central wall section 12.
  • the side wall sections 14, 16 therefore widen from top to bottom and stand upright.
  • the rear edges of the side wall sections 14, 16 are followed by flange sections 18, 20, which are bent outward by approximately 90 ° to the side.
  • the lower edges of the wall sections 12, 14, 16 are followed by flange sections 22, 24, 28 which are formed by right-angled bending outwards. It can be seen that the flange sections 22, 24 and 28 are continuous.
  • the bending of the individual wall sections and flange sections is not done with sharp edges, but over a radius. In particular, in the area of the connection of the side wall sections 14, 16 formed a relatively large radius with the central wall section 12.
  • a support plate 10 of the type shown is known per se from the basic structure. It is placed with the flange sections 22 to 28 on a floor panel (not shown) of an automobile and fastened there and fastened with the side flange sections 18, 20 to a pillar of the body, which is also not shown. This results in a channel 30 between the column and the support body, the z. B. receives a fuel line leading to the tank, not shown, of the automobile.
  • brackets 32, 34 are attached, to which a panel of the automobile can be attached.
  • a nut is shown for buckling the lap belt of a seat belt for the automobile, not shown.
  • a bracket 36 is attached to the outside of the side wall section 18, to which a sensor for an airbag is attached.
  • a plurality of stud bolts 38 are shown for the attachment of further parts, but this will not be described in detail here. The production of the support plate 10 is described in more detail below.
  • a sheet metal strip 40 is shown, which is gradually advanced in the direction of arrow 42 into a forming and drawing press.
  • the outline of a blank is shown, from which the support plate 10 according to FIG. 1 is produced by several shaping processes.
  • a composite tool is indicated at 46, with the aid of which two depressions 48 are first formed in the metal strip 40 and then a preform 50 is punched out in the same stroke of the press die.
  • the preform 50 has the side wall sections 14, 16, the middle wall section 12 and the flange sections 18, 20 and the flange sections 22, 24, 26 on. 3, the sections described lie in one plane.
  • the bending lines 52, 54, 56, 58, 60, about which the sections described later are subsequently bent, are shown only for the purpose of illustration. They cannot be recognized by the preform 50.
  • the depressions 48 which are naturally raised on the other side of the preform 50, are approximately triangular in outline with a rounded tip 62. They are rounded in cross-section, and the entire base of the depression 48 forms a section of a conical jacket, i.e. H. the width and depth of the depressions decrease from the free edge to the tip, which lies in the plane of the sheet.
  • the side flange sections 18, 20 are bent at right angles to the side wall sections 14, 16, specifically around the bending lines 52, 54.
  • the flange sections 22, 24, 28 are bent around the bending line 56. This results in an excess of material in the area 64, 66 in the flange sections 22, 24, 28, which is formed by the bulge in this area.
  • the side wall sections 14, 16 are bent relative to the middle wall section 12, the flange sections 18, 20 and 22 to 28 each pointing outwards. This results in a particular load in the areas shown at 66 and 68. But since sufficient material is available due to the bulges 64, 66, it is achieved that the thickness of the The plate also has the same size in the areas 68, 70 as in the other areas of the support plate 10.
  • the manufacturing process described enables material to be saved in comparison to a manufacturing process by deep drawing. This material saving is up to 50%.
  • a manufacturing process of the type described requires a far less high-quality material than a deep-drawing process.
  • a method for manufacturing in the manner described can lead to a higher number of units per unit of time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP20040013616 2003-06-26 2004-06-09 Procédé de fabrication d'un élément de support d'une carroserie d'automobile et ébauche pour la fabrication d'un tel élément Expired - Fee Related EP1491271B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003128901 DE10328901B4 (de) 2003-06-26 2003-06-26 Verfahren zur Herstellung eines Stützblechs für eine Automobilkarosse sowie Vorformling für ein Stützblech
DE10328901 2003-06-26

Publications (2)

Publication Number Publication Date
EP1491271A1 true EP1491271A1 (fr) 2004-12-29
EP1491271B1 EP1491271B1 (fr) 2005-11-30

Family

ID=33395006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040013616 Expired - Fee Related EP1491271B1 (fr) 2003-06-26 2004-06-09 Procédé de fabrication d'un élément de support d'une carroserie d'automobile et ébauche pour la fabrication d'un tel élément

Country Status (3)

Country Link
EP (1) EP1491271B1 (fr)
DE (2) DE10328901B4 (fr)
ES (1) ES2252718T3 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5092097A (en) * 1990-09-10 1992-03-03 United Steel Products Co. Holddown connector
US5249404A (en) * 1992-05-11 1993-10-05 Simpson Strong-Tie Company, Inc. Holdown connection
FR2773568A1 (fr) * 1998-01-13 1999-07-16 Denis Crochet Dispositif d'assemblage d'elements de structure, comportant une equerre modulable

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19728582B4 (de) * 1997-07-04 2007-04-26 Volkswagen Ag Verfahren zum Herstellen eines Metallformteils

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5092097A (en) * 1990-09-10 1992-03-03 United Steel Products Co. Holddown connector
US5249404A (en) * 1992-05-11 1993-10-05 Simpson Strong-Tie Company, Inc. Holdown connection
FR2773568A1 (fr) * 1998-01-13 1999-07-16 Denis Crochet Dispositif d'assemblage d'elements de structure, comportant une equerre modulable

Also Published As

Publication number Publication date
DE10328901B4 (de) 2005-06-30
EP1491271B1 (fr) 2005-11-30
ES2252718T3 (es) 2006-05-16
DE10328901A1 (de) 2005-02-10
DE502004000151D1 (de) 2006-01-05

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