WO2004015316A2 - Verfahren zur herstellung einer verbindung - Google Patents
Verfahren zur herstellung einer verbindung Download PDFInfo
- Publication number
- WO2004015316A2 WO2004015316A2 PCT/EP2003/007910 EP0307910W WO2004015316A2 WO 2004015316 A2 WO2004015316 A2 WO 2004015316A2 EP 0307910 W EP0307910 W EP 0307910W WO 2004015316 A2 WO2004015316 A2 WO 2004015316A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- hollow profile
- internal high
- high pressure
- indentation
- Prior art date
Links
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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/037—Forming branched tubes
-
- 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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
- B21D39/044—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods perpendicular
Definitions
- the invention relates to a method for producing a connection according to the preamble of patent claim 1.
- a generic method is known from DE 196 53 509 AI.
- a connection technology is described on a frame structure of a motor vehicle body, which is based on the internal high-pressure forming of a hollow profile.
- a spigot is formed from this in a branch of the corresponding internal high-pressure forming tool, which is pressed onto the connecting part fixed in the branch by the internal high pressure.
- the connection part is also deformed with the same shape as a result of the internal high pressure, as a result of which a positive connection is created between the hollow profile and the connection part.
- this connection is, on the one hand, not designed to be non-rotatable with respect to radially and / or axially acting forces on the connecting part and, on the other hand, it is not designed to be particularly pull-proof.
- the invention has for its object to develop a generic method in such a way that a peel-resistant and torsion-proof connection between a hollow profile and a hollow component is created.
- the anti-rotation device is achieved by reshaping the circular cross-section of the hollow profile in the connection area into a cross-section that deviates from the circular shape, for example oval or polygonal, by means of the internal high pressure, so that an inseparable form fit also occurs in the circumferential direction between the hollow profile and the component.
- the connection is exactly reproducible and can be produced in a process-economical manner with any reshaping of the hollow profile outside the connection area simultaneously and in one tool. Additional connecting elements are omitted, so that the variety of parts for the connection is minimal.
- FIG. 1 shows, in a lateral longitudinal section, a connection produced according to the invention with a polygonal cross section of the component and of the hollow profile outside the narrowing of the cross section,
- Fig. 2 in a lateral longitudinal section an inventive connection with a cross-sectional narrowing achieved by the action of stamp.
- FIG. 1 shows a connection 1 of a circumferentially closed hollow profile 2 with a hollow component 3.
- the hollow profile 2 and the component 3 are placed in a divided internal high-pressure forming tool 4, the hollow profile 2 being arranged in the rectilinearly extending main part of the tool engraving 5 and the component 3 in a branch 6 radially extending from this main part.
- the branch 6 has an annular bead 8 near its mouth opening 7, which protrudes into the engraving 5 of the branch 6.
- the hollow profile 2 can have any cross section, while the component 3 can likewise be a circumferentially closed hollow profile, but an open design of the component 3 provided with a longitudinal gap and / or with holes, among other things, is also possible.
- the tubular component 3 also has a cross-sectional constriction 9, which is preferably formed mechanically by pressing it in by means of a stamp. Then it is introduced into the branch 6 of the engraving 5 of the segmented internal high-pressure forming tool 4, the engraving 5 in the branch 6 following the shape of the component 3 at least with regard to the cross-sectional constriction 9. The component 3 is in the installed position in the tool 4 at least on the annular bead 8 of the same shape. A fluidic internal high pressure is now generated in the hollow profile 2, as a result of which it expands and to the main part of the engraving
- the hollow profile material is expanded into this and the component 3 by the internal high pressure, so that a nozzle 10 is formed.
- the undercut surfaces 11 of the cross-sectional constriction 9 of the component 3 are gripped behind by the connecting piece 10 that is formed, and the connector 10 is pressed, at least at the point of the cross-sectional constriction, to the inside 14 of the component 3, whereby the hollow profile 2 is connected to the component 3 in the axial direction of the component 3 in a non-detachable manner by the positive engagement achieved in the process.
- the walls 12, 13 of the hollow profile 2 and of the component 3 form a common indentation at the location of the cross-sectional constriction 9.
- the branch 6 can be formed over the entire overlapping connection area 15 of the hollow profile 2 and component 3 in a cross-sectional shape deviating from a circular shape, this is only the case in the present exemplary embodiment outside the annular bead 8 on the side of the engraving 5 facing away from the main part.
- the branch 6 can be formed over the entire overlapping connection area 15 of the hollow profile 2 and component 3 in a cross-sectional shape deviating from a circular shape, this is only the case in the present exemplary embodiment outside the annular bead 8 on the side of the engraving 5 facing away from the main part.
- the branch 6 can be formed over the entire overlapping connection area 15 of the hollow profile 2 and component 3 in a cross-sectional shape deviating from a circular shape, this is only the case in the present exemplary embodiment outside the annular bead 8 on the side of the engraving 5 facing away from the main part.
- the branch 6 can be formed over the entire overlapping connection area 15 of the hollow profile 2 and component 3 in a cross-sectional shape devi
- the hollow profile As an alternative to this embodiment, the hollow profile
- the connector 10 before the connection to the component 3. If the component 3 is also designed as a hollow profile, this is simply plugged onto the connector 10 of the hollow profile 2 to be connected prior to the formation of the positive connection for positioning on the hollow profile 2.
- the component 3 does not yet have a cross-sectional constriction 9.
- the component 3 is designed as a hollow profile that is open on the circumference, this hollow profile enclosing a cavity over at least 180 °.
- the component 3 is then elastically bent open at the opening edges before the formation of the positive connection for positioning on the hollow profile to be connected, and is placed on the hollow profile 2 in a clamp-like manner while springing back the opening edges.
- the hollow profile 2 and the component 3 are introduced together into the internal high-pressure forming tool 4 and expanded by internal high-pressure, the walls 12, 13 of which are true to the contour against the bead 8, forming the indentation and the undercut Surfaces 11 and against the non-circular cross-section wall of the branch 6 are pressed to achieve the anti-rotation.
- the component 3 prefferably has the cross-sectional constriction 9 before it is plugged onto the hollow profile 2, so that when the component is assembled
- the component 3 can also be arranged in the main part of the engraving 5 of the forming tool 4 instead of in the branch 6.
- the annular bead 8 should be designed in a corresponding manner on the main part of the engraving 5.
- the cross section of the main part in the sense of the invention must differ from a circular shape. It is also possible that the branch 6 and thus the connector 10 are completely eliminated.
- the hollow profile 2 plugged together with the component 3 is expanded by means of internal high pressure to form a press fit between the component 3 and the hollow profile 2, after which the walls 12, 13 adjoin the - in this case oval - branch wall Create true to contour. Subsequently, the walls 12, 13 of the hollow profile 2 and the component 3 which are in frictional engagement with one another are pressed in locally or circumferentially by the interaction of a plurality of punches 16 integrated into the internal high-pressure forming tool 4 with the internal high pressure to form the indentation.
- the material outflow of the walls 12, 13 on the end face 17 can be controlled by withdrawing the plunger 16 in good time and / or a suitable reduction in the high pressure in such a way that no local thinning occurs, which as a predetermined breaking point would lead to a rapid failure of the assembly under mechanical loads ,
- each indentation on the assembly creates nubs 18 which not only form a positive fit in the axial direction but also in the radial direction, so that the Security against rotation is already given.
- the assembly is given a non-rotationally symmetrical cross-section by pressing against the non-circular shaped branch wall with the same contour.
- the possibility of the connection 1 is not limited to the connector 10.
- the component 3 can also comprise the hollow profile 2 as a kind of extension of the longitudinally extending part of the hollow profile 2, the Component 3, as shown here for example in a pot shape 19.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002495513A CA2495513A1 (en) | 2002-08-07 | 2003-07-19 | Method for producing a connection |
US10/523,812 US20060054663A1 (en) | 2002-08-07 | 2003-07-19 | Method for producing a connection |
EP03784032A EP1527298A2 (de) | 2002-08-07 | 2003-07-19 | Verfahren zur herstellung einer verbindung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10236132.0 | 2002-08-07 | ||
DE10236132A DE10236132C1 (de) | 2002-08-07 | 2002-08-07 | Verfahren zur Herstellung einer Verbindung |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004015316A2 true WO2004015316A2 (de) | 2004-02-19 |
WO2004015316A3 WO2004015316A3 (de) | 2004-10-14 |
Family
ID=29265419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/007910 WO2004015316A2 (de) | 2002-08-07 | 2003-07-19 | Verfahren zur herstellung einer verbindung |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060054663A1 (de) |
EP (1) | EP1527298A2 (de) |
CA (1) | CA2495513A1 (de) |
DE (1) | DE10236132C1 (de) |
WO (1) | WO2004015316A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005030587B4 (de) * | 2005-06-30 | 2009-03-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Fügen zweier insbesondere rohrförmiger Bauteile mittels eines wirkmedienbasierten Umformverfahrens |
DE102005047129A1 (de) * | 2005-09-30 | 2007-04-05 | Bayerische Motoren Werke Ag | Verbindungsknoten zur Verbindung eines Knotenelementes mit mindestens einem Anschlussprofil, insbesondere für den Karosseriebau |
FR2952839B1 (fr) * | 2009-11-26 | 2013-08-02 | Intecom Sarl | Procede d'assemblage etanche de pieces mecaniques mettant en oeuvre de facon particuliere les tres hautes pressions hydrauliques et permettant avantageusement la fabrication de rampes d'injection |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19653509A1 (de) * | 1996-12-20 | 1998-06-25 | Volkswagen Ag | Rahmenstruktur einer Fahrzeugkarosserie aus Knotenelementen und angeschlossenen, vorprofilierten Trägerelementen |
DE19721478A1 (de) * | 1997-05-23 | 1998-11-26 | Hahn Ortwin | Druckfügeverfahren und damit hergestellte Rahmen |
GB2330104A (en) * | 1997-10-10 | 1999-04-14 | Gkn Sankey Ltd | Tubular connection |
GB2330096A (en) * | 1997-10-10 | 1999-04-14 | Gkn Sankey Ltd | A process for producing a tubular structural element |
US6010155A (en) * | 1996-12-31 | 2000-01-04 | Dana Corporation | Vehicle frame assembly and method for manufacturing same |
DE10159154A1 (de) * | 2001-12-01 | 2003-06-18 | Peter Groche | Verfahren zur Hertellung von hohlförmigen Bauteilstrukturen durch Ausformen und Fügen unter Verwendung des Innenhochdruckumformens (IHU) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3124874A (en) * | 1964-03-17 | Method of fastening pipe together | ||
US2504625A (en) * | 1946-08-13 | 1950-04-18 | Sunroc Refrigeration Company | Tube joint |
-
2002
- 2002-08-07 DE DE10236132A patent/DE10236132C1/de not_active Expired - Fee Related
-
2003
- 2003-07-19 US US10/523,812 patent/US20060054663A1/en not_active Abandoned
- 2003-07-19 EP EP03784032A patent/EP1527298A2/de not_active Withdrawn
- 2003-07-19 WO PCT/EP2003/007910 patent/WO2004015316A2/de not_active Application Discontinuation
- 2003-07-19 CA CA002495513A patent/CA2495513A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19653509A1 (de) * | 1996-12-20 | 1998-06-25 | Volkswagen Ag | Rahmenstruktur einer Fahrzeugkarosserie aus Knotenelementen und angeschlossenen, vorprofilierten Trägerelementen |
US6010155A (en) * | 1996-12-31 | 2000-01-04 | Dana Corporation | Vehicle frame assembly and method for manufacturing same |
DE19721478A1 (de) * | 1997-05-23 | 1998-11-26 | Hahn Ortwin | Druckfügeverfahren und damit hergestellte Rahmen |
GB2330104A (en) * | 1997-10-10 | 1999-04-14 | Gkn Sankey Ltd | Tubular connection |
GB2330096A (en) * | 1997-10-10 | 1999-04-14 | Gkn Sankey Ltd | A process for producing a tubular structural element |
DE10159154A1 (de) * | 2001-12-01 | 2003-06-18 | Peter Groche | Verfahren zur Hertellung von hohlförmigen Bauteilstrukturen durch Ausformen und Fügen unter Verwendung des Innenhochdruckumformens (IHU) |
Also Published As
Publication number | Publication date |
---|---|
DE10236132C1 (de) | 2003-11-20 |
US20060054663A1 (en) | 2006-03-16 |
WO2004015316A3 (de) | 2004-10-14 |
CA2495513A1 (en) | 2004-02-19 |
EP1527298A2 (de) | 2005-05-04 |
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