EP0904868A1 - Plate for a structural element, structural element and method for making a structural element for motor vehicles - Google Patents
Plate for a structural element, structural element and method for making a structural element for motor vehicles Download PDFInfo
- Publication number
- EP0904868A1 EP0904868A1 EP98116626A EP98116626A EP0904868A1 EP 0904868 A1 EP0904868 A1 EP 0904868A1 EP 98116626 A EP98116626 A EP 98116626A EP 98116626 A EP98116626 A EP 98116626A EP 0904868 A1 EP0904868 A1 EP 0904868A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- circuit board
- structural component
- base plate
- holes
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000002787 reinforcement Effects 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 238000007493 shaping process Methods 0.000 abstract 2
- 238000003466 welding Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
-
- 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
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
- B21D35/007—Layered blanks
-
- 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
- B21D49/00—Sheathing or stiffening objects
Definitions
- the invention relates to a circuit board for a structural component, a structural component and a Method for producing a structural component for motor vehicles according to the Preambles of claims 1, 6 and 9.
- DE 43 07 563 C2 shows such a board and such a method.
- a circuit board Base plate and at least one reinforcing plate which at least the base plate partially covered and e.g. by spot welding, adhesive or welding is connected to the base plate.
- This board then undergoes a forming process subjected to being brought into a desired shape.
- the problem here is that the base plate and the reinforcing plate in the joint forming process are stretched or compressed differently. Doing so especially the reinforcement plate in the event of a bend in which it is on the inside smaller radius of curvature sits, more compressed and at a bend where it is on the outside sits, stretched more, while the base plate accordingly vice versa is stretched or compressed. Thus there is a general tendency to either Wrinkling when compressed or cracking when stretched. In both cases the material properties of the structural component deteriorate.
- the strength of the structural component can usually only be achieved by using a higher material thickness can be guaranteed, since when using thin sheets Risk of crack formation is too great and also the impairment due to the formation of folds is too strong. However, this in turn increases the total weight and material costs elevated.
- the invention is therefore based on the object of a circuit board for a structural component Structural component and a method for producing a structural component for motor vehicles develop in such a way that the formation of folds and cracks in the board when Forming process can be kept low and still a low total weight is observed.
- FIG. 1 and 2 show a reinforcing plate 1a, which has a plurality of through holes 2a has and is designed as a perforated plate.
- the through holes 2a are circular here educated.
- Fig. 2 shows a reinforcing plate 1a, which has a plurality of through holes 2a are cruciform.
- the through holes 2 can also have other geometric shapes, for example, slit-shaped or elongated.
- each corresponding to the geometric arrangement of the through holes run parallel and at an angle ⁇ or ⁇ , where ⁇ is shown in FIG. 1 of the symmetrical arrangement 60 degrees and ⁇ in the arrangement shown in FIG. 2 90 degrees is.
- the reinforcement plate 1 shown in FIGS. 1 and 2 can be used in different areas also a different, but then certain material thickness in the respective areas have so that when forming the reinforcing plate 1 to produce the Structural component in these areas then an optimal material flow or an optimal Material expansion can take place. This can be caused by certain steels or materials are supported, especially if the base plate and the reinforcement plate 1 each have a certain structure.
- the reinforcement plate 1a, b shown in FIGS. 1 and 2 is now with the base plate 4th at least partially connected. This can be done, for example, by a corresponding Spot welding technology, but also through a special joining technique or adhesive technique or Combinations of these procedures are used. It is advantageous if in the area between Base plate and the reinforcement plate 1 corresponding corrosion protection measures be performed. Depending on where the structural component created on a If the motor vehicle is used, the structural component can also have a relatively large base plate and arranged thereon have a plurality of reinforcement plates 1.
- the circuit board formed from base plate 4 and reinforcing plate 1 is one Forming process, e.g. subjected to a deep-drawing process.
- the two sheets reshaped together.
- the holes 2a, b in the reinforcement plate deformed according to the local deformations, e.g. enlarged or reduced or changed asymmetrically.
- the loads on the reinforcement plate by a Deformation of the holes are recorded so that a material flow over a larger one Surface and crack formation is avoided even with thin reinforcement plates.
- the web-like areas 3a, b between the through holes in the Reinforcement plate can be stretched more than the material of the base plate. So can an asymmetrical deformation of the board is absorbed by the reinforcement plate by deforming the holes and the web-like areas -ggf in different directions to different degrees - be stretched.
- This material expansion or expansion depends, among other things, on the geometry of the through holes 2 and the width or length of the between the through holes 2 remaining webs 3.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Printed Boards (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Die Erfindung betrifft eine Platine für ein Strukturbauteil, ein Strukturbauteil und ein Verfahren zur Herstellung eines Strukturbauteiles für Kraftfahrzeuge, wobei ein Grundblech und ein Verstärkungsblech (1) miteinander verbunden und umgeformt werden. Die beim Umformen des Verstärkungsbleches (1) und des Grundbleches möglicherweise auftretende Faltenbildung wird dadurch verringert, daß vor dem Umformen durch in dem Verstärkungsblech (1) vorgesehene Durchgangsöffnungen (2a) materialfreie Bereiche gebildet werden. Beim nachfolgenden Umformvorgang kann dabei eine Faltenbildung im Verstärkungsblech dadurch verringert werden, daß stegartige Bereiche (3a) zwischen den Durchgangsöffnungen stärker gedehnt oder gestaucht werden als das Material des Grundblechs. <IMAGE>The invention relates to a circuit board for a structural component, a structural component and a method for producing a structural component for motor vehicles, a base plate and a reinforcing plate (1) being connected to one another and deformed. The formation of folds which may occur during the shaping of the reinforcement plate (1) and the base plate is reduced in that material-free areas are formed by through openings (2a) provided in the reinforcement plate (1) before the shaping. In the subsequent forming process, the formation of folds in the reinforcement plate can be reduced in that web-like regions (3a) between the through openings are stretched or compressed more than the material of the base plate. <IMAGE>
Description
Die Erfindung betrifft eine Platine für ein Strukturbauteil, ein Strukturbauteil und ein Verfahren zur Herstellung eines Strukturbauteiles für Kraftfahrzeuge gemäß den Oberbegriffen der Ansprüche 1, 6 und 9.The invention relates to a circuit board for a structural component, a structural component and a Method for producing a structural component for motor vehicles according to the Preambles of claims 1, 6 and 9.
Die DE 43 07 563 C2 zeigt eine derartige Platine und ein derartiges Verfahren. Bei der Herstellung derartiger Strukturbauteile wird zunächst eine Platine geschaffen, die ein Grundblech und mindestens ein Verstärkungsblech aufweist, das das Grundblech zumindest teilweise bedeckt und z.B. durch Punktschweißungen, Klebemittel oder Verschweißungen mit dem Grundblech verbunden ist. Diese Platine wird anschließend einem Umformvorgang unterworfen, bei dem sie in eine gewünschte Form gebracht wird.DE 43 07 563 C2 shows such a board and such a method. In the Manufacture of such structural components is first created a circuit board Base plate and at least one reinforcing plate, which at least the base plate partially covered and e.g. by spot welding, adhesive or welding is connected to the base plate. This board then undergoes a forming process subjected to being brought into a desired shape.
Problematisch ist dabei, daß das Grundblech und das Verstärkungsblech bei dem gemeinsamen Umformvorgang unterschiedlich gedehnt oder gestaucht werden. Dabei wird insbesondere das Verstärkungsblech bei einer Biegung, bei der es auf der Innenseite mit kleinerem Krümmungsradius sitzt, stärker gestaucht und bei einer Biegung, bei der es auf der Außenseite sitzt, stärker gedehnt, während das Grundblech entsprechend jeweils umgekehrt gedehnt bzw. gestaucht wird. Somit besteht allgemein die Neigung entweder zur Faltenbildung bei Stauchung oder zu einer Rißbildung bei Dehnung. In beiden Fällen werden die Materialeigenschaften des Strukturbauteils verschlechtert.The problem here is that the base plate and the reinforcing plate in the joint forming process are stretched or compressed differently. Doing so especially the reinforcement plate in the event of a bend in which it is on the inside smaller radius of curvature sits, more compressed and at a bend where it is on the outside sits, stretched more, while the base plate accordingly vice versa is stretched or compressed. Thus there is a general tendency to either Wrinkling when compressed or cracking when stretched. In both cases the material properties of the structural component deteriorate.
Die Festigkeit des Strukturbauteils kann dabei in der Regel nur durch Verwendung einer höheren Materialstärke gewährleistet werden, da bei Verwendung dünnerer Bleche die Gefahr einer Rißbildung zu groß ist und auch die Beeinträchtigung durch die Faltenbildung zu stark ist. Hierdurch werden jedoch wiederum das Gesamtgewicht und die Materialkosten erhöht. The strength of the structural component can usually only be achieved by using a higher material thickness can be guaranteed, since when using thin sheets Risk of crack formation is too great and also the impairment due to the formation of folds is too strong. However, this in turn increases the total weight and material costs elevated.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Platine für ein Strukturbauteil, ein Strukturbauteil und ein Verfahren zur Herstellung eines Strukturbauteiles für Kraftfahrzeuge derart weiterzubilden, daß die Faltenbildung und Rißbildung in der Platine beim Umformvorgang gering gehalten werden und dennoch ein niedriges Gesamtgewicht eingehalten wird.The invention is therefore based on the object of a circuit board for a structural component Structural component and a method for producing a structural component for motor vehicles develop in such a way that the formation of folds and cracks in the board when Forming process can be kept low and still a low total weight is observed.
Diese Aufgabe wird durch eine Platine nach Anspruch 1, ein Verfahren nach Anspruch 6 und ein Strukturbauteil nach Anspruch 9 gelöst. Die Unteransprüche beschreiben bevorzugte Weiterbildungen.This object is achieved by a circuit board according to claim 1, a method according to claim 6 and a structural component according to claim 9 solved. The sub-claims describe preferred Training.
Da vor dem Umformen durch in dem Verstärkungsblech vorgesehene Durchgangsöffnungen materialfreie Bereiche gebildet sind, steht der Materialdehnung bzw. -ausdehnung des Verstärkungsbleches während des Umformvorganges ein entsprechender materialfreier Raum zur Verfügung. Dies hat zum einen zur Folge, daß die ursprünglich materialfreien Bereiche durch das Umformen verformt, z.B. vergrößert, verkleinert oder sogar verschlossen werden können. Zum anderen können stegartige Bereiche des Verstärkungsblechs zwischen den Durchgangsöffnungen sich stärker als das Material des Grundblechs dehnen und somit die unsymmetrischen Beanspruchungen während des Umformvorgangs ausgleichen. Somit kann auch bei relativ geringen Blechdicken die Faltenbildung des Verstärkungsbleches und eine mögliche Rißbildung verringert bzw. vermieden werden.As before forming through through openings provided in the reinforcement plate material-free areas are formed, the material expansion or expansion of the Reinforcing sheet a corresponding material-free during the forming process Space available. On the one hand, this has the consequence that the originally material-free Areas deformed by forming, e.g. enlarged, reduced or even closed can be. On the other hand, web-like areas of the reinforcement plate can between the through openings stretch more than the material of the base plate and thus the asymmetrical stresses during the forming process compensate. Thus, the wrinkling of the Reinforcing sheet and possible cracking can be reduced or avoided.
Die Erfiindung wird im folgenden anhand der beiliegenden Zeichnungen an einigen Ausführungsformen näher erläutert. Es zeigen:
- Fig. 1
- eine erste Ausführungsform eines Verstärkungsbleches,
- Fig. 2
- eine zweite Aufsführungsform eine Verstärkungsbleches,
- Fig. 3
- eine Platine mit einem Verstärkungsblech nach Fig. 1 oder 2.
- Fig. 1
- a first embodiment of a reinforcing plate,
- Fig. 2
- a second embodiment of a reinforcing sheet,
- Fig. 3
- a circuit board with a reinforcing plate according to FIG. 1 or 2.
Die Fig. 1 und 2 zeigen ein Verstärkungsblech 1a, das mehrere Durchgangslöcher 2a
aufweist und als Lochblech ausgeführt ist. Die Durchgangslöcher 2a sind hier kreisförmig
ausgebildet. 1 and 2 show a reinforcing
Fig. 2 zeigt ein Verstärkungsblech 1a, das mehrere Durchgangslöcher 2a aufweist, die
kreuzförmig ausgebildet sind.Fig. 2 shows a reinforcing
Die Durchgangslöcher 2 können auch andere geometrische Formen aufweisen,
beispielsweise schlitzförmig oder länglich sein.The through
Zwischen den Durchgangslöchern 2a bzw 2b sind stegartige Bereiche 3a bzw 3b
ausgebildet, die entsprechend der geometrischen Anordnung der Durchgangslöcher jeweils
parallel und unter einem Winkel α bzw β verlaufen, wobei α bei in Fig. 1 der gezeigten
symmetrischen Anordnung 60 Grad und β bei der in Fig. 2 gezeigten Anordnung 90 Grad
beträgt.Between the through
Das in den Fig. 1 und 2 dargestellte Verstärkungsblech 1 kann in verschiedenen Bereichen auch eine unterschiedliche, aber in den jeweiligen Bereichen dann bestimmte Materialdicke aufweisen, so daß beim Umformen der Verstärkungsplatte 1 zur Erzeugung des Strukturbauteiles in diesen Bereichen dann ein optimaler Materialfluß bzw. eine optimale Materialdehnung erfolgen kann. Durch bestimmte Stähle bzw. Materialien kann dieses unterstützt werden, insbesondere wenn das Grundblech sowie das Verstärkungsblech 1 jeweils eine bestimmte Gefügestruktur aufweisen.The reinforcement plate 1 shown in FIGS. 1 and 2 can be used in different areas also a different, but then certain material thickness in the respective areas have so that when forming the reinforcing plate 1 to produce the Structural component in these areas then an optimal material flow or an optimal Material expansion can take place. This can be caused by certain steels or materials are supported, especially if the base plate and the reinforcement plate 1 each have a certain structure.
Das in den Fig. 1 und 2 gezeigte Verstärkungsblech 1a,b wird nun mit dem Grundblech 4
zumindest teilweise verbunden. Dies kann beispielsweise durch eine entsprechende
Punktschweißtechnik, aber auch durch eine besondere Fügetechnik oder Klebetechnik bzw.
Kombinationen dieser Verfahren erfolgen. Von Vorteil ist, wenn im Bereich zwischen dem
Grundblech und dem Verstärkungsblech 1 entsprechende Korrosionsschutzmaßnahmen
durchgeführt werden. In Abhängigkeit davon, wo das erzeugte Strukturbauteil an einem
Kraftfahrzeug eingesetzt wird, kann das Strukturbauteil auch ein relativ großes Grundblech
und hierauf angeordnet mehrere Verstärkungsbleche 1 aufweisen.The
Anschließend wird die aus Grundblech 4 und Verstärkungsblech 1 gebildete Platine einem
Umformvorgang, z.B. einem Tiefziehvorgang unterzogen. Hierbei werden die beiden Bleche
gemeinsam umgeformt. Dabei werden die Löcher 2a, b in dem Verstärkungsblech
entsprechend den lokalen Verformungen verformt, z.B. vergrößert oder verkleinert oder
unsymmetrisch verändert. Somit können die Belastungen des Verstärkungsblech durch eine
Verformung der Löcher aufgenommen werden, so daß ein Materialfluß über eine größere
Fläche und eine Rißbildung auch bei dünnen Verstärkungsblechen vermieden wird.Subsequently, the circuit board formed from
Weiterhin können die stegartigen Bereiche 3a,b zwischen den Durchgangslöchern im
Verstärkungsblech stärker gedehnt werden als das Material der Grundplatte. Somit kann
eine unsymmetrische Verformung der Platine von dem Verstärkungsblech aufgenommen
werden, indem die Löcher verformt werden und die stegartigen Bereiche -ggf in
unterschiedlichen Richtungen unterschiedlich stark - gedehnt werden.Furthermore, the web-
Diese Materialdehnung bzw. -ausdehnung ist unter anderem abhängig von der Geometrie
der Durchgangslöcher 2 sowie der Breite bzw. Länge der zwischen den Durchgangslöchern
2 verbleibenden Stege 3.This material expansion or expansion depends, among other things, on the geometry
of the through
Im Ergebnis ist durch das beschriebene Verfahren eine plastische Verformung des Verstärkungsbleches 1 mit dem Grundblech zusammen leichter möglich, wobei eine geringere Faltenbildung und kleinere Kräfte zu erwarten sind.As a result, a plastic deformation of the Reinforcement plate 1 with the base plate together easier, one less wrinkling and smaller forces are to be expected.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742817A DE19742817A1 (en) | 1997-09-27 | 1997-09-27 | Circuit board for a structural component, structural component and method for producing a structural component for motor vehicles |
| DE19742817 | 1997-09-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0904868A1 true EP0904868A1 (en) | 1999-03-31 |
| EP0904868B1 EP0904868B1 (en) | 2001-12-19 |
Family
ID=7843899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98116626A Expired - Lifetime EP0904868B1 (en) | 1997-09-27 | 1998-09-02 | structural element and method for making a structural element for motor vehicles |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0904868B1 (en) |
| DE (2) | DE19742817A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1106274A3 (en) * | 1999-12-01 | 2002-12-18 | Salzgitter AG | Formpiece of non-uniform thicknes and method of making |
| EP3492189A1 (en) * | 2017-12-04 | 2019-06-05 | Mazda Motor Corporation | Method for manufacturing vehicle body member and vehicle body member for vehicle |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19933785A1 (en) * | 1999-07-19 | 2001-01-25 | Volkswagen Ag | Inner column element for the B or C pillar of a vehicle body |
| DE10221880B4 (en) * | 2002-05-16 | 2007-03-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for producing a reinforced pipe, such a pipe and its use |
| DE102014200777A1 (en) | 2014-01-17 | 2015-07-23 | Bayerische Motoren Werke Aktiengesellschaft | Structural component for a motor vehicle and method for its production |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140653A (en) * | 1979-04-14 | 1980-11-04 | Masuo Kani | Reinforcement plate of automobile frame |
| DE4228396A1 (en) * | 1992-08-26 | 1994-03-03 | Bayerische Motoren Werke Ag | Double-skinned sheet-metal component production method - forms equi-pitched holes not in line in main and reinforcing skins before common stamping or deep-drawing operation and fills spaces between |
| DE19524235A1 (en) * | 1995-07-04 | 1997-01-16 | Volkswagen Ag | Method of manufacturing preformed part with different material thicknesses - involves cutting base blank to size, with plate-shaped reinforcing elements being joined to blank and single or multistage shaping of composite component carried out |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE852141C (en) * | 1949-06-03 | 1952-10-13 | Georg Dr-Ing Weddige | Expanded rib metal and process for its manufacture |
| DE2418309A1 (en) * | 1974-04-16 | 1975-11-06 | Otto Mueller Ohg Maschinen Und | WALL ELEMENT FOR THE PRODUCTION OF HOUSINGS, IN PARTICULAR FOR EVAPORATION OR COOLING SYSTEMS AND DRYER ETC. AND PROCESS FOR ITS MANUFACTURING |
| US4272114A (en) * | 1976-12-22 | 1981-06-09 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Impact absorbing device |
| JPS61287871A (en) * | 1985-06-17 | 1986-12-18 | Toyota Motor Corp | Side member for automobile |
| DE4307563C2 (en) * | 1992-03-12 | 1994-09-22 | Bayerische Motoren Werke Ag | Method for manufacturing a sheet metal structural part which partially has a multiple sheet metal structure, and sheet metal structural part produced by the method |
| DE4440192C2 (en) * | 1993-11-23 | 2002-01-10 | Volkswagen Ag | Acoustically damped structural part |
-
1997
- 1997-09-27 DE DE19742817A patent/DE19742817A1/en not_active Withdrawn
-
1998
- 1998-09-02 DE DE59802511T patent/DE59802511D1/en not_active Expired - Lifetime
- 1998-09-02 EP EP98116626A patent/EP0904868B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140653A (en) * | 1979-04-14 | 1980-11-04 | Masuo Kani | Reinforcement plate of automobile frame |
| DE4228396A1 (en) * | 1992-08-26 | 1994-03-03 | Bayerische Motoren Werke Ag | Double-skinned sheet-metal component production method - forms equi-pitched holes not in line in main and reinforcing skins before common stamping or deep-drawing operation and fills spaces between |
| DE19524235A1 (en) * | 1995-07-04 | 1997-01-16 | Volkswagen Ag | Method of manufacturing preformed part with different material thicknesses - involves cutting base blank to size, with plate-shaped reinforcing elements being joined to blank and single or multistage shaping of composite component carried out |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 005, no. 010 (M - 051) 22 January 1981 (1981-01-22) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1106274A3 (en) * | 1999-12-01 | 2002-12-18 | Salzgitter AG | Formpiece of non-uniform thicknes and method of making |
| EP3492189A1 (en) * | 2017-12-04 | 2019-06-05 | Mazda Motor Corporation | Method for manufacturing vehicle body member and vehicle body member for vehicle |
| US10843737B2 (en) | 2017-12-04 | 2020-11-24 | Mazda Motor Corporation | Method for manufacturing vehicle body member and vehicle body member for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0904868B1 (en) | 2001-12-19 |
| DE19742817A1 (en) | 1999-04-15 |
| DE59802511D1 (en) | 2002-01-31 |
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