WO2002094639A1 - Verfahren zur herstellung eines strukturbauteils - Google Patents
Verfahren zur herstellung eines strukturbauteils Download PDFInfo
- Publication number
- WO2002094639A1 WO2002094639A1 PCT/EP2002/005617 EP0205617W WO02094639A1 WO 2002094639 A1 WO2002094639 A1 WO 2002094639A1 EP 0205617 W EP0205617 W EP 0205617W WO 02094639 A1 WO02094639 A1 WO 02094639A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flanging
- partial shells
- adhesive
- structural component
- partial
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
- B62D27/026—Connections by glue bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
- B62D27/023—Assembly of structural joints
Definitions
- the invention relates to a method for producing a structural component according to the preamble of claim 1.
- Structural components such as motor carriers, are usually connected to one another from two partial shells made of sheet metal material along their flanges by spot welding or riveting. This creates elongated hollow bodies with a closed cross section.
- the welding points or the rivets can be torn out in the event of a high peeling tension load.
- the shell construction allows the installation of internals, such as bulkhead plates or bushings, in the interior of the structural component.
- internals such as bulkhead plates or bushings
- the object of the invention is to provide a method with which structural components which can withstand high mechanical loads can be produced in a cost-effective and rapid manner.
- the main idea here is to connect the partial shells of the structural component along their flanges by flanging. This creates a continuous, linear connection along the flanges that, in contrast to spot-welded or riveted connections, extends over the entire length of the structural component. This results in a significant improvement compared to the connection methods mentioned, since only a small proportion of the flange is used for the connection in the case of welding points or rivets. In particular when stressed by peeling, the punctiform connection points can be torn open and thus the structural component can be separated.
- the method according to the invention increases the rigidity and strength of structural components under loads perpendicular to the plane of the flange.
- the line-shaped flare connection prevents the structural component from tearing open in the event of a crash, and a targeted folding of the closed hollow profile of the structural component is achieved, with a correspondingly high energy consumption.
- the flanging method according to the invention is particularly suitable for elongated structural components, such as, for example, engine mounts or rear side members. With such carriers, the continuous flare connection along the elongated connection areas has a particularly positive effect.
- the time required to produce a flare connection is significantly less than the time required to place a plurality of rivets along the connection flanges.
- the flanging process is also characterized by a shorter cycle time.
- the cycle time for the production of the structural components can thus be significantly reduced, in particular in the case of structural components made of light metals, in which a spot welding method is ruled out. Partial shells made of different materials can also be connected to one another.
- Another advantage of the flanging process is the extremely low susceptibility of the flanging tools to failure, especially in comparison to riveting tools.
- the use of flanging processes in the manufacture of vehicle components is known in principle.
- the method according to the invention relates to components of the supporting structure, that is to say components that contribute to the basic rigidity of the body.
- the basic stiffness is the global bending and torsional stiffness of the body, which is not significantly influenced by the flaps and doors.
- the stiffening of the front structure of the body improves the driving behavior noticeably, in the form of a more precise steering behavior and greater precision of all steering maneuvers. This is due to the continuous linear connection of the component halves, which creates a higher rigidity compared to the point connection in the known rivet connections.
- a “strength adhesive” is particularly advantageous to apply a “strength adhesive” to at least one connecting flange before the flanging.
- the strength adhesive used increases the rigidity of the entire component, which has a particularly positive effect on driving behavior, as stated above.
- the strength adhesive prevents that the flare connection opening opens perpendicularly to the flange plane. This ensures that the flared connection is retained over its entire length even in the event of a crash, and thus the structural component can dissipate a large amount of energy.
- the adhesive surface also seals the connection surface against the ingress of water.
- the method according to the invention further differs from known flanging methods on flaps and doors, as is known, for example, from DE 199 27 207 A1. While the adhesive is only used for flaps and doors to seal the flange fold, the strength adhesive used according to the invention makes a decisive contribution to increasing the basic rigidity of the supporting structure.
- flanging has the advantage that the adhesive is not subject to any undesired heat input.
- the adhesive burns in the area around the welding lens, resulting in a reduced effective area of the strength adhesive as well as health risks from the vapors generated.
- the active surface of the adhesive is completely preserved during flanging. Due to the cold flared connection, there are basically no heat affected zones in the metal, so that the load-bearing capacity of the connection is increased compared to a welding process. This has a particularly positive effect on support components that are subjected to high loads in the event of a crash.
- the joined structural component may be subjected as a single component, that is to say before inserting it into the body shell of the motor vehicle, to achieve a surface hardening of the adhesive.
- This heat treatment takes place, for example, in a specially designed oven in the body-in-white ("body-in-white oven”).
- the final curing of the adhesive then takes place by introducing the body-in-white into a paint drying oven, where the adhesive is tion reaches its final strength.
- the upstream heat treatment gives the adhesive a "surface skin” and can therefore no longer be washed out in the KTL bath. In this way, contamination of the KTL bath and thus also contamination of the body shell to be coated are avoided.
- the method according to the invention can be used in a particularly advantageous manner for support components which are composed of deep-drawn partial shells (claim 4).
- Such partial shells can be manufactured with great freedom in terms of the component geometry.
- the finished carrier component is characterized by uniform properties due to the uniform manufacturing process for the individual partial shells.
- the method is also suitable for connecting partial shells produced in different ways, for example connecting a deep-drawn partial shell with an extruded profile component.
- the structural component can be completed fully automatically in the press shop.
- the preferably two partial shells which are brought into their shape in the preceding press stations, are provided with adhesive on an orientation station and finally joined to the finished structural component at the end of the press line by the tool inserted into the press flanging the flanges of the partial shells together combines.
- the above-described relocation of the flanging from the shell to the press shop is particularly suitable for structural components that are just as simple as IHU components, so that the eggshells are already assembled in the press shop. can be set. If, on the other hand, internals such as bulkhead plates or bushings are required, it is more expedient to connect the partial shells to one another by flaring only after the internals have been inserted.
- the flanging can also take place in a flanging device. Because of the simple geometry of the elongated structural components, a comparatively simple two- or three-dimensional device is sufficient. The use of an expensive robot for further degrees of freedom can usually be dispensed with when flaring the structural components.
- the partial shells of support components in particular in the case of light metal materials, have significantly higher material thicknesses than is the case with non-load-bearing components, such as flaps and doors, due to the required rigidity.
- the bending radii can be reduced, which is particularly important with the large material thicknesses used in order to achieve a sufficiently large overlapping adhesive surface in a small space.
- the temperature in the area of the largest deformation is about 450 ° C.
- the heat input must be limited to the line along the flare, with an expansion of only a few millimeters perpendicular to the flare.
- a strong temperature gradient to the surroundings is achieved.
- the heat can be introduced, for example, by elongated infrared radiators or induction coils. Both types of heat generating devices are characterized by low energy consumption and can also be accommodated in the flanging tool, with advantages in terms of direct heat input. If the heat source is integrated into the tool, the heat source must be insulated to prevent the entire tool from heating up and to reduce energy consumption. It is also possible to cool the tool in the area of the heat source, for example by means of a cooling liquid.
- the partial shells can also be heated outside the tool, for example when the structural component is manufactured in a press line on an orientation station between two presses.
- Another possibility is to preheat at least one of the partial shells to a temperature of about 70 to 90 ° C., so that the local heating in the area of the largest deformation can then take place more quickly.
- This preheating of the entire shell can be carried out inside or outside the tool. If there is a combined cutting / forming tool, preheating also reduces the formation of tinsel when cutting aluminum.
- the heat is preferably applied after the flanged flange has been bent by 90 ° before the final bending by 180 °.
- the temperature control of the bending area can also be limited to the first bending process (folding by 90 °) or extended to both flaring steps.
- Heating the flare not only facilitates the flanging process and keeps the material free of cracks.
- the amount of heat introduced is sufficient to additionally pre-gel the adhesive. This means that the separate heat treatment described above in a "body-in-white furnace" for surface hardening of the adhesive can be dispensed with while the KTL bath is still kept clean.
- the invention is illustrated in the drawing and is explained in more detail below. It shows:
- FIG. 1 shows a structural component produced according to the invention in a perspective view, with an integrated representation of the cross section of the
- FIG. 2 shows a flanging tool into which the structural component from FIG. 1 is inserted
- Fig. 3 is an enlarged detail view of a flange area of the
- FIGS. 4a to c are schematic cross sections of structural components produced according to the invention.
- Fig. 1 shows a motor bracket 1, which consists of an upper and a lower shell
- the two partial shells 2 and 3 are connected together over their entire length by flanging.
- a connecting flange 7 running perpendicular to its longitudinal extent for connecting the mount 1 to the body of the motor vehicle.
- the two partial shells 2 and 3 are provided with beads 8 over a portion of their length. Both partial shells 2 and 3 have a series of bores 9 and inserts 10.
- FIG. 2 shows the final phase of the production of a structural component 1, as shown in FIG. 1, using the example of a tool 12a, 12b inserted into a press 11.
- flange 5 of partial shell 3 is bent over flange 4 of partial shell 2 by upper tool 12a.
- a radius 13 is provided on the tool 12b, which creates a so-called hollow flange 14.
- Fig. 3 shows the connection area of the flanges 4 and 5 in more detail.
- adhesive 23 is used, which, with the pressing of the two flanges 4 and 5, the remaining gap between the Fills flanges 4 and 5 and, after it has hardened, connects the flanges 4 and 5 to one another over a large area.
- the adhesive 23 prevents the flare connection from being separated.
- the flaring process is to be designed in such a way that the so-called “popping open” (i.e. the reshaping after completion of the flanging process) in the area of the contact surfaces between the flanges 4 and 5 a gap of at most 0.3 mm, ideally at most 0.1 to 0, 2 mm arises, which can be bridged by the adhesive 23.
- "popping open” i.e. the reshaping after completion of the flanging process
- "Betamate 1496" from Gurrit-Essex AG can be used as the adhesive 23.
- the outside of the hollow flange 14, designated by 19, is preferably heated by a heat source 21, which is shown schematically in FIGS. 2 and 3, and specifically before the bending shown by 180 ° is carried out.
- a heat source 21 which is shown schematically in FIGS. 2 and 3, and specifically before the bending shown by 180 ° is carried out.
- the heat source 21 can also be arranged in a recess 22 in one or in both tools 12a or / and 12b, as shown in broken lines in FIG. 2.
- the heat source 21 also has an elongated shape corresponding to the longitudinal extent of the structural component 1 and is arranged immediately adjacent to the flanged flanges 4 and 5 for heating directly and locally restricted to the regions 19 and 20.
- the structural component 1 consists of a first partial shell 2 with a substantially U-shaped cross section with projecting fastening flanges 4, which is supplemented by a second partial shell 3 designed as a striking plate to form a closed hollow profile.
- the lateral end regions of the partial shell 3 simultaneously form the connecting flanges 5, which in the present example in their initial state protrude beyond the flanges 4 and - as shown in broken lines - are bent by the flanging process in such a way that they cover the flanges 4 on the upper side.
- the two partial shells 2 and 3 can also be L-shaped, with flanges 4 and 5 at the ends of the partial shells 4 and 5, respectively.
- the division plane 6 can be placed in the vertical direction, based on the installation position of the structural component 1, in such a way that the flanges 4 and 5 in the division level 6 form contact surfaces for other components, such as a luggage compartment floor.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02771655A EP1390253A1 (de) | 2001-05-23 | 2002-05-22 | Verfahren zur herstellung eines strukturbauteils |
US10/717,961 US20040150242A1 (en) | 2001-05-23 | 2003-11-21 | Method for the production of a structural component |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10125065A DE10125065A1 (de) | 2001-05-23 | 2001-05-23 | Verfahren zur Herstellung eines Strukturbauteils |
DE10125065.7 | 2001-05-23 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/717,961 Continuation US20040150242A1 (en) | 2001-05-23 | 2003-11-21 | Method for the production of a structural component |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002094639A1 true WO2002094639A1 (de) | 2002-11-28 |
Family
ID=7685810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/005617 WO2002094639A1 (de) | 2001-05-23 | 2002-05-22 | Verfahren zur herstellung eines strukturbauteils |
Country Status (4)
Country | Link |
---|---|
US (1) | US20040150242A1 (de) |
EP (1) | EP1390253A1 (de) |
DE (1) | DE10125065A1 (de) |
WO (1) | WO2002094639A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10326609B4 (de) * | 2002-11-29 | 2013-02-07 | Volkswagen Ag | Hohlprofil und Verfahren zur Herstellung eines Hohlprofils |
DE102010052040B4 (de) | 2009-11-23 | 2016-05-25 | Schuler Pressen Gmbh | Verfahren und Vorrichtung zur Fertigung von Formteilen in einer Servopressen-Anlage |
US8636197B1 (en) * | 2012-10-04 | 2014-01-28 | Ford Global Technologies, Llc | Bonding of roof panels |
US9434422B2 (en) * | 2014-03-04 | 2016-09-06 | Ford Global Technologies, Llc | Geometric/mechanical isolation of aluminum to steel joining at trim edges for corrosion protection |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4445579C1 (de) * | 1994-12-20 | 1996-02-22 | Daimler Benz Ag | Verfahren zum Herstellen einer Falzverbindung |
US5605371A (en) * | 1994-04-25 | 1997-02-25 | Inland Steel Company | Light weight steel auto body construction |
EP0987166A1 (de) * | 1998-09-16 | 2000-03-22 | M.A.C. S.p.A. | Bauelement für ein Kraftfahrzeug |
DE19927207A1 (de) | 1999-06-15 | 2000-12-28 | Thyssenkrupp Ind Ag | Verfahren zum randseitigen Verbinden von Blechen |
DE19941996A1 (de) * | 1999-09-02 | 2001-03-08 | Sca Schucker Gmbh | Verfahren und Anordnung zum Aufheizen eines Bauteils entlang einer vorgegebenen Bahn |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE356688A (de) * | 1927-12-21 | |||
CH568111A5 (en) * | 1972-12-15 | 1975-10-31 | Rapena Patent & Verwaltungs Ag | Cold forming metal strip by rolling - to form sections for metal windows |
US4000007A (en) * | 1973-02-13 | 1976-12-28 | Cegedur Societe De Transformation De L'aluminium Pechiney | Method of making drawn and hemmed aluminum sheet metal and articles made thereby |
US4131980A (en) * | 1977-09-07 | 1979-01-02 | Zinnbauer Frederick W | Method of making a tank |
US5000997A (en) * | 1989-02-06 | 1991-03-19 | The Budd Company | Method for making a painted part and part made thereby |
US5273606A (en) * | 1991-12-16 | 1993-12-28 | The Budd Company | Bonding technique for a multi-panel device |
US5470416A (en) * | 1992-04-16 | 1995-11-28 | The Budd Company | Bonding method using mixture of adhesive and non-compressible beads |
SE501083C2 (sv) * | 1993-03-25 | 1994-11-07 | Volvo Ab | Förfarande för åstadkommande av ett limförband i ett falsförband |
US5480189A (en) * | 1994-08-12 | 1996-01-02 | Ford Motor Company | Automotive vehicle frame |
US5587042A (en) * | 1994-09-19 | 1996-12-24 | E. R. St. Denis & Sons Ltd. | Adhesive curing system and method for a hemming machine |
DE19724610A1 (de) * | 1996-06-18 | 1998-01-15 | Volkswagen Ag | Karosserieteil und Verfahren zu seiner Herstellung |
US5948185A (en) * | 1997-05-01 | 1999-09-07 | General Motors Corporation | Method for improving the hemmability of age-hardenable aluminum sheet |
US6112390A (en) * | 1998-05-25 | 2000-09-05 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus for manufacturing hemmed workpieces |
US6365883B1 (en) * | 1998-09-11 | 2002-04-02 | Robotron Corporation | U-shaped adhesive bonding apparatus |
US6000118A (en) * | 1998-10-30 | 1999-12-14 | Chrysler Corporation | Method of forming a sealed edge joint between two metal panels |
US6446478B1 (en) * | 1999-07-29 | 2002-09-10 | Progressive Tool & Industries Co. | Two-stage hemming machine with movable dies |
US6368008B1 (en) * | 2000-05-24 | 2002-04-09 | Daimlerchrysler Corporation | Sealed edge joint between two metal panels |
-
2001
- 2001-05-23 DE DE10125065A patent/DE10125065A1/de not_active Withdrawn
-
2002
- 2002-05-22 EP EP02771655A patent/EP1390253A1/de not_active Ceased
- 2002-05-22 WO PCT/EP2002/005617 patent/WO2002094639A1/de not_active Application Discontinuation
-
2003
- 2003-11-21 US US10/717,961 patent/US20040150242A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5605371A (en) * | 1994-04-25 | 1997-02-25 | Inland Steel Company | Light weight steel auto body construction |
DE4445579C1 (de) * | 1994-12-20 | 1996-02-22 | Daimler Benz Ag | Verfahren zum Herstellen einer Falzverbindung |
EP0987166A1 (de) * | 1998-09-16 | 2000-03-22 | M.A.C. S.p.A. | Bauelement für ein Kraftfahrzeug |
DE19927207A1 (de) | 1999-06-15 | 2000-12-28 | Thyssenkrupp Ind Ag | Verfahren zum randseitigen Verbinden von Blechen |
DE19941996A1 (de) * | 1999-09-02 | 2001-03-08 | Sca Schucker Gmbh | Verfahren und Anordnung zum Aufheizen eines Bauteils entlang einer vorgegebenen Bahn |
Also Published As
Publication number | Publication date |
---|---|
US20040150242A1 (en) | 2004-08-05 |
EP1390253A1 (de) | 2004-02-25 |
DE10125065A1 (de) | 2002-11-28 |
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