CA2543265A1 - Production of ihu components with a flange - Google Patents
Production of ihu components with a flange Download PDFInfo
- Publication number
- CA2543265A1 CA2543265A1 CA002543265A CA2543265A CA2543265A1 CA 2543265 A1 CA2543265 A1 CA 2543265A1 CA 002543265 A CA002543265 A CA 002543265A CA 2543265 A CA2543265 A CA 2543265A CA 2543265 A1 CA2543265 A1 CA 2543265A1
- Authority
- CA
- Canada
- Prior art keywords
- flange
- hollow profile
- high pressure
- internal high
- initial
- 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.)
- Abandoned
Links
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 238000007493 shaping process Methods 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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 OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
- B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
- B21C37/14—Making tubes from double flat material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to a method for the production of a hollow profile, which comprises at least one flange (6; 8; 10; 11), by means of internal high pressure shaping. The measurements and the position of the flange (6, 8, 10, 11) are not altered, in relation to the embodied end hollow profile, during internal high pressure shaping.
Description
DaimlerChrysler AG
Production of IHPF components having a flange The invention relates to a method of producing a hollow profile having at least one flange by means of internal high pressure forming.
Conventional hollow profiles with a flange are generally produced by extrusion. In particular in automobile construction, the flange is required in order to fasten the hollow profile, produced by extrusion for example, to further vehicle body parts.
DE 10130794 Al, for example, has disclosed an extruded profile which has a flange and is subsequently subjected to internal high pressure forming, the course and the direction of the flange over the length of the structural part not being established in a dimensionally accurate manner until during the deforming according to the internal high pressure process.
However, an extruded hollow profile having a flange generally has the disadvantage that the hollow profile can only be bent and/or widened with difficulty. The reason for this is that the connecting point of the flange on the hollow profile acts like a tension rod against the forming force. In addition, on account of the accumulation of material at this connecting point, the flange cannot expand sufficiently and therefore the hollow profile cannot be formed in a controlled manner.
It is known from DE 19905365 Al to produce a hollow profile having a flange by roll forming from a sheet-metal blank, the hollow profile then subsequently being subjected to internal high pressure forming. In this
Production of IHPF components having a flange The invention relates to a method of producing a hollow profile having at least one flange by means of internal high pressure forming.
Conventional hollow profiles with a flange are generally produced by extrusion. In particular in automobile construction, the flange is required in order to fasten the hollow profile, produced by extrusion for example, to further vehicle body parts.
DE 10130794 Al, for example, has disclosed an extruded profile which has a flange and is subsequently subjected to internal high pressure forming, the course and the direction of the flange over the length of the structural part not being established in a dimensionally accurate manner until during the deforming according to the internal high pressure process.
However, an extruded hollow profile having a flange generally has the disadvantage that the hollow profile can only be bent and/or widened with difficulty. The reason for this is that the connecting point of the flange on the hollow profile acts like a tension rod against the forming force. In addition, on account of the accumulation of material at this connecting point, the flange cannot expand sufficiently and therefore the hollow profile cannot be formed in a controlled manner.
It is known from DE 19905365 Al to produce a hollow profile having a flange by roll forming from a sheet-metal blank, the hollow profile then subsequently being subjected to internal high pressure forming. In this
- 2 -case, the flange is established beforehand in such a way that its position and dimensions are not formed until during the internal high pressure forming. However, such a method is complicated in its implementation inasmuch as that portion of the flange on the initial hollow profile which is to be deformed during the internal high pressure forming has to be accurately established or calculated as a function of the holding-down force for the flange on the one hand and the internal high pressure to be applied on the other hand. In addition, the hollow profile shown in this publication has the disadvantage that the initial hollow profile has sharp edges, which, on account of the pronounced hardening during the profile production process, possibly remain behind as visible residual edges or undulations on the final finished hollow profile produced by the IHPF process. The bending-back or stretching of such profile edges hardened to a pronounced extent cannot be completely taken into account in the IHPF process.
Starting therefrom, the object of the present invention is to provide a method of producing a hollow profile by means of which a hollow profile having at least one flange can be produced in a simple and controlled manner.
This object is achieved by a method having the features according to patent claim 1.
The method is distinguished by the fact that an initial hollow profile consists of a single sheet, at least one flange being formed in the longitudinal direction of the initial hollow profile likewise by corresponding folding or roll forming of the sheet. The sheet can be produced in particular from a sheet-metal blank and/or a roll-
Starting therefrom, the object of the present invention is to provide a method of producing a hollow profile by means of which a hollow profile having at least one flange can be produced in a simple and controlled manner.
This object is achieved by a method having the features according to patent claim 1.
The method is distinguished by the fact that an initial hollow profile consists of a single sheet, at least one flange being formed in the longitudinal direction of the initial hollow profile likewise by corresponding folding or roll forming of the sheet. The sheet can be produced in particular from a sheet-metal blank and/or a roll-
- 3 -formed sheet unwound from the coil.
Then, in order to form a closed initial hollow profile, the joint location of the sheet is welded and the closed initial hollow profile is inserted into an internal high pressure forming (IHPF) tool. During the insertion, the at least one flange is positioned in a corresponding cavity in the IHPF tool and is clamped in place with a defined holding-down force during the internal high pressure forming.
According to the invention, the inner contour of the IHPF
tool, on the one hand, and the holding-down force to be applied on the flange during the internal high pressure forming, on the other hand, are selected in such a way that the position of the flange always remains unchanged relative to the finished hollow profile then formed.
In this case, it is possible according to the invention to establish the holding-down force in such an order of magnitude that a subsequent flow of material into the finished hollow profile on no account occurs during the internal high pressure forming.
Under certain circumstances, however, it may also be desired for such a subsequent flow of material from the flange into the finished hollow profile to be allowed, so that a corresponding - holding-down force is to be selected.
According to the invention, the flange can be produced in different ways during the folding or roll forming of the sheet.
Then, in order to form a closed initial hollow profile, the joint location of the sheet is welded and the closed initial hollow profile is inserted into an internal high pressure forming (IHPF) tool. During the insertion, the at least one flange is positioned in a corresponding cavity in the IHPF tool and is clamped in place with a defined holding-down force during the internal high pressure forming.
According to the invention, the inner contour of the IHPF
tool, on the one hand, and the holding-down force to be applied on the flange during the internal high pressure forming, on the other hand, are selected in such a way that the position of the flange always remains unchanged relative to the finished hollow profile then formed.
In this case, it is possible according to the invention to establish the holding-down force in such an order of magnitude that a subsequent flow of material into the finished hollow profile on no account occurs during the internal high pressure forming.
Under certain circumstances, however, it may also be desired for such a subsequent flow of material from the flange into the finished hollow profile to be allowed, so that a corresponding - holding-down force is to be selected.
According to the invention, the flange can be produced in different ways during the folding or roll forming of the sheet.
- 4 -Thus it is possible, on the one hand, for the flange to be formed by doubling of the material of the sheet during the folding or roll forming, that is to say the sheet is folded over or roll-formed, with the flange being formed.
Another possibility consists in the fact that the sheet is folded or roll-formed in such a way that the two ends of the sheet form an overlapping joint for forming the flange.
However, it is also possible for the sheet to be folded or roll-formed at one end, with the flange being formed, and for the other end, during the folding or roll-forming, to be formed in such a way that it abuts against the transition region between the flange and the initial hollow profile.
In order to form a closed initial hollow profile, the sheet is welded together in the region of its free ends .
Since these free ends can lie in the region of the flange or outside this region, welding is carried out there in each case.
If a subsequent flow of material from the flange is desired during the internal high pressure forming, the weld is at any rate located outside the flange region in the initial hollow profile.
Hollow profiles produced by the method according to the invention are suitable, for example, for use in body construction as roof frames, side sills, transverse members or longitudinal and transverse members in the body floor assembly, in which case the adjacent body components can then be attached to the flange by P801460/w0/1
Another possibility consists in the fact that the sheet is folded or roll-formed in such a way that the two ends of the sheet form an overlapping joint for forming the flange.
However, it is also possible for the sheet to be folded or roll-formed at one end, with the flange being formed, and for the other end, during the folding or roll-forming, to be formed in such a way that it abuts against the transition region between the flange and the initial hollow profile.
In order to form a closed initial hollow profile, the sheet is welded together in the region of its free ends .
Since these free ends can lie in the region of the flange or outside this region, welding is carried out there in each case.
If a subsequent flow of material from the flange is desired during the internal high pressure forming, the weld is at any rate located outside the flange region in the initial hollow profile.
Hollow profiles produced by the method according to the invention are suitable, for example, for use in body construction as roof frames, side sills, transverse members or longitudinal and transverse members in the body floor assembly, in which case the adjacent body components can then be attached to the flange by P801460/w0/1
- 5 -conventional joining processes, such as resistance spot welding for example.
Further advantages and features of the method according to the invention follow from the description below with reference to the attached drawings, in which:
fig. 1 schematically shows an IHPF tool with a flange clamped in place;
figs 2a and 2b show an initial hollow profile with different positions of the weld;
fig. 3 shows a further initial hollow profile with a single flange; and figs 4a and 4b each show an initial hollow profile with a weld outside the flange region.
Shown schematically in fig. 1 is an IHPF tool 1 which consists of a top part 2 and a bottom part 3. Both parts 2 and 3 form a cavity 4, which corresponds to the contour of the final finished hollow profile.
A sheet-metal blank formed into an initial hollow profile 5 is inserted into this cavity 4. The initial hollow profile 5 has a flange 6, which is clamped in place in a corresponding section 7 of the cavity 4.
The clamping in place can be effected with such a holding-down force that either no subsequent flow of material can take place from the region of the flange 6 into the finished hollow profile or such a subsequent flow of material is allowed.
Further advantages and features of the method according to the invention follow from the description below with reference to the attached drawings, in which:
fig. 1 schematically shows an IHPF tool with a flange clamped in place;
figs 2a and 2b show an initial hollow profile with different positions of the weld;
fig. 3 shows a further initial hollow profile with a single flange; and figs 4a and 4b each show an initial hollow profile with a weld outside the flange region.
Shown schematically in fig. 1 is an IHPF tool 1 which consists of a top part 2 and a bottom part 3. Both parts 2 and 3 form a cavity 4, which corresponds to the contour of the final finished hollow profile.
A sheet-metal blank formed into an initial hollow profile 5 is inserted into this cavity 4. The initial hollow profile 5 has a flange 6, which is clamped in place in a corresponding section 7 of the cavity 4.
The clamping in place can be effected with such a holding-down force that either no subsequent flow of material can take place from the region of the flange 6 into the finished hollow profile or such a subsequent flow of material is allowed.
- 6 -By way of example, figs 2a and 2b show an initial hollow profile 5 in which a flange 8 is formed by an overlapping joint of the free ends of the sheet. The flange 8 can then be welded either by a weld 9 being provided in the joint region of the flange 8 (fig. 2a) or by a weld 9 being provided in the course of the flange 8 transversely to the latter (fig. 2b).
Furthermore, by way of example, fig. 3 shows an initial hollow profile 5 in which the flange 10 is formed by a free end of the sheet being appropriately bent over and by the other free end being welded on in the transition region between the flange 10 and the initial hollow profile 5.
A further possibility consists in forming a flange 11 of the initial hollow profile 5 in such a way that the sheet is folded over and thus overlaps in the region provided for the flange 11. This is shown by way of example in fig. 4a for a single flange 11 and in fig. 4b for two flanges 11. In both cases the weld 9 is located outside the flange in the region of the initial hollow profile 5.
Such an initial hollow profile with a weld 9 established outside the flange region is preferably to be used when a subsequent flow of material from the region of the flange 11 during the internal high pressure forming is to be permitted.
Furthermore, by way of example, fig. 3 shows an initial hollow profile 5 in which the flange 10 is formed by a free end of the sheet being appropriately bent over and by the other free end being welded on in the transition region between the flange 10 and the initial hollow profile 5.
A further possibility consists in forming a flange 11 of the initial hollow profile 5 in such a way that the sheet is folded over and thus overlaps in the region provided for the flange 11. This is shown by way of example in fig. 4a for a single flange 11 and in fig. 4b for two flanges 11. In both cases the weld 9 is located outside the flange in the region of the initial hollow profile 5.
Such an initial hollow profile with a weld 9 established outside the flange region is preferably to be used when a subsequent flow of material from the region of the flange 11 during the internal high pressure forming is to be permitted.
Claims (3)
1. A method of producing a hollow profile having at least one flange (6, 11) extending along the hollow profile, comprising the steps:
- folding or roll forming an initial hollow profile (5) from a sheet, with at least one flange (6, 11) being formed which projects from the initial hollow profile and is formed by doubling of the material of the sheet;
- welding a joint location of the initial hollow profile (5); and - internal high pressure forming (IHPF) of the initial hollow profile (5) into a finished hollow profile by applying an internal high pressure by means of a fluid into the interior of the initial hollow profile (5), the at least one flange (6, 11) being clamped in place in an IHPF tool (1) in such a way that its position and dimensions remain unchanged relative to the finished hollow profile during the internal high pressure forming, characterized in that the initial hollow profile (5) is welded outside the region of the flange (6, 11).
- folding or roll forming an initial hollow profile (5) from a sheet, with at least one flange (6, 11) being formed which projects from the initial hollow profile and is formed by doubling of the material of the sheet;
- welding a joint location of the initial hollow profile (5); and - internal high pressure forming (IHPF) of the initial hollow profile (5) into a finished hollow profile by applying an internal high pressure by means of a fluid into the interior of the initial hollow profile (5), the at least one flange (6, 11) being clamped in place in an IHPF tool (1) in such a way that its position and dimensions remain unchanged relative to the finished hollow profile during the internal high pressure forming, characterized in that the initial hollow profile (5) is welded outside the region of the flange (6, 11).
2. The method as claimed in claim 1, characterized in that at least one flange (6, 11), in the closed IHPF tool (1), is acted upon by a holding-down force which prevents a subsequent flow of material from the flange (6, 11) into the finished hollow profile during the internal high pressure forming.
3. The method as claimed in claim 1, characterized in that the at least one flange (6, 11), in the closed IHPF
tool (1), is acted upon by a holding-down force of this kind which allows a defined subsequent flow of material from the flange (6, 11) into the finished hollow profile during the internal high pressure forming.
tool (1), is acted upon by a holding-down force of this kind which allows a defined subsequent flow of material from the flange (6, 11) into the finished hollow profile during the internal high pressure forming.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10350145A DE10350145B4 (en) | 2003-10-28 | 2003-10-28 | Generation of hydroformed components with flange |
| DE10350145.2 | 2003-10-28 | ||
| PCT/EP2004/010182 WO2005051562A1 (en) | 2003-10-28 | 2004-09-11 | Production of ihu components with a flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2543265A1 true CA2543265A1 (en) | 2005-06-09 |
Family
ID=34584783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002543265A Abandoned CA2543265A1 (en) | 2003-10-28 | 2004-09-11 | Production of ihu components with a flange |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080035628A1 (en) |
| EP (1) | EP1680240A1 (en) |
| JP (1) | JP2007533462A (en) |
| CA (1) | CA2543265A1 (en) |
| DE (1) | DE10350145B4 (en) |
| WO (1) | WO2005051562A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0814517B1 (en) | 2007-07-20 | 2020-09-15 | Nippon Steel Corporation | HYDROFORMATION METHOD FOR FORMING A HYDROFORMED PRODUCT |
| DE102007060088A1 (en) | 2007-12-13 | 2009-06-25 | Daimler Ag | Internal high pressure-transformable hollow section producing method for e.g. door frame, of vehicle, involves joining flange areas with each other such that internal high pressure-transformable hollow section is produced |
| DE102011051965A1 (en) * | 2011-07-20 | 2013-01-24 | Benteler Automobiltechnik Gmbh | Method for producing a tubular structural component for a motor vehicle and structural component |
| JP6326224B2 (en) * | 2013-12-09 | 2018-05-16 | 住友重機械工業株式会社 | Molding equipment |
| DE102014102974A1 (en) | 2014-03-06 | 2015-09-10 | Thyssenkrupp Steel Europe Ag | Method for customizing the shape of components |
| JP6285082B2 (en) * | 2015-08-27 | 2018-02-28 | 住友重機械工業株式会社 | Molding apparatus and molding method |
| EP3597323B1 (en) * | 2017-03-17 | 2022-08-03 | Sumitomo Heavy Industries, Ltd. | Molding device and molding method |
| CN107952874A (en) * | 2017-11-30 | 2018-04-24 | 苏州紫荆清远新能源汽车技术有限公司 | A kind of molding machine and method of body of a motor car part double stopper |
| CN107716690A (en) * | 2017-11-30 | 2018-02-23 | 苏州紫荆清远新能源汽车技术有限公司 | A kind of shaped device and method of body of a motor car part list seam |
| JP7384655B2 (en) | 2019-12-16 | 2023-11-21 | 住友重機械工業株式会社 | Vehicle body structure, reinforcing member, and method for manufacturing reinforcing member |
| CN114425582B (en) * | 2022-01-28 | 2022-11-08 | 东北林业大学 | Internal high-pressure forming device and method for pipe with flange edge |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59206272A (en) * | 1983-05-07 | 1984-11-22 | 本田技研工業株式会社 | Structural material |
| US5070717A (en) * | 1991-01-22 | 1991-12-10 | General Motors Corporation | Method of forming a tubular member with flange |
| US5431326A (en) * | 1994-09-07 | 1995-07-11 | General Motors Corporation | Method of forming a tubular member with separate flange |
| DE19624955A1 (en) * | 1996-06-24 | 1998-01-08 | Matthias Prof Dr Ing Kleiner | Mobile pipe line manufacturing process |
| ES2176770T3 (en) * | 1996-12-03 | 2002-12-01 | Elpatronic Ag | PROCEDURE FOR THE MANUFACTURE OF A MOLDED PART. |
| DE19742444C2 (en) * | 1997-09-26 | 1999-11-18 | Daimler Chrysler Ag | Process for producing a hollow body from two metal plates |
| DE19905365B4 (en) * | 1999-02-10 | 2005-06-30 | Daimlerchrysler Ag | Method for producing a hollow profile with flange |
| DE19907247C2 (en) * | 1999-02-19 | 2001-08-23 | Meleghy Hydroforming Gmbh & Co | Device for producing in particular bulbous undercut hollow bodies |
| DE10130794A1 (en) * | 2001-06-26 | 2003-01-02 | Magna Ihv Ges Fuer Innenhochdr | Structural part of a motor vehicle body and method for its production |
| DE10141503C1 (en) * | 2001-08-24 | 2002-10-10 | Audi Ag | Production of an elongated hollow body comprises roller profiling and deforming a basic body using an internal high pressure deformation process allowing controlled material flow to produce a fixed flange |
-
2003
- 2003-10-28 DE DE10350145A patent/DE10350145B4/en not_active Expired - Fee Related
-
2004
- 2004-09-11 WO PCT/EP2004/010182 patent/WO2005051562A1/en not_active Application Discontinuation
- 2004-09-11 US US10/577,405 patent/US20080035628A1/en not_active Abandoned
- 2004-09-11 JP JP2006537081A patent/JP2007533462A/en active Pending
- 2004-09-11 EP EP04765105A patent/EP1680240A1/en not_active Withdrawn
- 2004-09-11 CA CA002543265A patent/CA2543265A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007533462A (en) | 2007-11-22 |
| DE10350145A1 (en) | 2005-06-16 |
| US20080035628A1 (en) | 2008-02-14 |
| EP1680240A1 (en) | 2006-07-19 |
| DE10350145B4 (en) | 2006-04-13 |
| WO2005051562A1 (en) | 2005-06-09 |
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