US20180297149A9 - Butt jointed closed section hollow structural element - Google Patents
Butt jointed closed section hollow structural element Download PDFInfo
- Publication number
- US20180297149A9 US20180297149A9 US14/866,810 US201514866810A US2018297149A9 US 20180297149 A9 US20180297149 A9 US 20180297149A9 US 201514866810 A US201514866810 A US 201514866810A US 2018297149 A9 US2018297149 A9 US 2018297149A9
- Authority
- US
- United States
- Prior art keywords
- sheet metal
- interface
- interface flanges
- components
- structural element
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/045—Hollow panels
-
- B23K2201/045—
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49893—Peripheral joining of opposed mirror image parts to form a hollow body
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12354—Nonplanar, uniform-thickness material having symmetrical channel shape or reverse fold [e.g., making acute angle, etc.]
Definitions
- closed section hollow elements are required they are generally constructed from two press formed open section sheet metal components, creating a clamshell configuration using either an overlapping section to facilitate a suitable fillet type weld joint or a outstanding flange to provide a double material spot weld joint.
- the primary aim of the present disclosure is to eliminate the redundant material associated with overlapping or flange type joints in clamshell closed section hollow elements.
- the most efficient type of weld joint is a butt arrangement where the two components being structurally joined meet along a tangent interface at their open edges so that there is no overlapping of material.
- This butt joint can then be welded using MIG, TIG, Arc, Laser or similar means creating a continuous structural attachment of the two components.
- the quality of this welded butt joint is extremely sensitive to the gap between to the two components and the differential thickness of the materials of the two components.
- the differential thickness can be controlled by correct specification during the design process.
- the gap between the two components is dependent on manufacturing process capability.
- press formed clamshell configurations use either an overlapping section to facilitate a suitable fillet type weld joint or an outstanding flange to provide a double material spot weld joint.
- a closed section hollow element constructed from two press formed open section sheet metal components configured as a clamshell with structural attachment created by laser welding of a butt joint at the interface between the components would offer a significant weight and cost advantage over the configurations of the prior art.
- a closed section hollow element is constructed from an upper sheet metal stamped component with a generally open section manufactured using press forming techniques and configured with two primarily parallel downstanding interface flanges and a lower sheet metal stamped component with a generally open section manufactured using press forming techniques and configured with two primarily parallel upstanding interface flanges.
- the upper sheet metal stamped component and lower sheet metal stamped component are then structurally attached along the zero gap interface by a continuous laser butt weld while being rigidly held in the fixture. Because the components are rigidly held in dimensional compliance and the five axes trimming operation is undertaken in the same fixture the zero gap interface is absolutely maintained and a high quality laser welded joint with no redundant material overlap, very little heat effect and high processing speed is achieved.
- the result is a continuous hollow structural element of a variable cross section that has a high level of dimensional integrity because once the two sheet metal stamped components are structurally attached they hold each other in dimensional compliance once removed from the fixture thereby eliminating the effects of material springbuck and forming inaccuracies in the individual components.
- closed section hollow element of the present disclosure can be constructed with cost effective press forming tools because highly accurate sheet metal stamped components are no longer required as the fixture provides the required dimensional tolerances during trimming and welding.
- An additional advantage of the closed section hollow element of the present disclosure is that its cross section area can be greatly varied along its length with far higher ratios than conventional closed section, non-overlapping joint arrangements produced by roll forming, blow forming or hydroforming.
- FIG. 1 is a perspective view of the inventive closed section hollow element
- FIG. 2 is an expanded perspective view of the inventive closed section hollow element
- FIG. 3 is a perspective view of the components of the inventive closed section hollow element partially installed in the purpose built fixture
- FIG. 4 is a perspective view of the purpose built fixture with the components of the inventive closed section hollow element fully installed and trimmed;
- FIG. 5 is a perspective view of the purpose built fixture with the components of the inventive closed section hollow element fully installed during laser welding;
- FIG. 6 is a perspective view of an application of the inventive closed section hollow element
- FIG. 7 is a perspective view of a further application of the inventive closed section hollow element
- FIG. 8 is a perspective view of another application of the inventive closed section hollow element.
- a closed section hollow element ( 1 ) is substantially constructed from an upper sheet metal stamped component ( 10 ) and a lower sheet metal stamped component ( 20 ). Both of the sheet metal stamped components are manufactured by press forming a flat sheet of steel, aluminum or other suitable metal or alloy into a required open section shape which is dictated by the final application's structural and packaging requirements.
- the upper sheet metal stamped component ( 10 ) is configured with two primarily parallel downstanding interface flanges ( 12 )( 14 ).
- the lower sheet metal stamped component ( 20 ) is configured with two primarily parallel upstanding interface flanges ( 22 )( 24 ).
- the downstanding interface flanges ( 12 )( 14 ) of the upper sheet metal component ( 10 ) are five-axes laser trimmed after press forming to create highly accurate interface edges ( 16 )( 18 ).
- the upstanding interface flanges ( 22 )( 24 ) of the lower sheet metal component ( 20 ) are five-axes laser trimmed after press forming to create highly accurate interface edges ( 26 )( 28 ).
- the interface edges ( 16 )( 18 )( 26 )( 28 ) are complementarily trimmed via a five-axes laser during a single operation while the upper sheet metal stamped component ( 10 ) and a lower sheet metal stamped component ( 20 ) are rigidly held in dimensional compliance by a purpose built fixture.
- This zero gap interface (also referred to as “interface”) facilitates a high quality non-linear weld ( 30 ) that structurally attaches the upper sheet metal stamped component ( 10 ) and a lower sheet metal stamped component ( 20 ) so as to create a continuous hollow structural element ( 1 ) having a variable cross section.
- FIG. 3 illustrates a non-limiting example of a purpose built fixture ( 40 ) configured to rigidly hold the upper sheet metal stamped component ( 10 ) and lower sheet metal stamped component ( 20 ) with the sheet metal stamped components shown prior to installation in the purpose built fixture ( 40 ) held at a pre-determined distance by the spacer blocks ( 42 ).
- FIG. 4 illustrates the purpose built fixture ( 40 ) with the upper sheet metal stamped component ( 10 ) and lower sheet metal stamped component ( 20 ) fully installed in the fixture ( 40 ) and the interface edges ( 16 )( 18 )( 26 )( 28 ) having been complementarily trimmed via a five-axes laser.
- the scrap material ( 50 )( 52 ) that contains inaccurate formed edges ( 54 )( 56 ) is shown detached from the interface flanges ( 12 )( 14 )( 22 )( 24 ).
- FIG. 5 illustrates the purpose built fixture ( 40 ) with the spacer blocks retracted ( 42 ) and the upper sheet metal stamped component ( 10 ) and lower sheet metal stamped component ( 20 ) brought into contact with each other along their previously laser trimmed interface edges ( 16 )( 18 )( 26 )( 28 ) creating a zero gap condition.
- a laser beam ( 60 ) is illustrated completing a welded butt joint ( 30 ) by butt welding along the entire zero gap interface so as to create a continuous hollow structural element ( 1 ) of a variable cross section.
- FIG. 6 illustrates a non-limiting example of a vehicular suspension arm ( 70 ) configured as a closed section hollow element of a variable cross section constructed using the manufacturing technique previously described.
- FIG. 7 illustrates a non-limiting example of a vehicular motor compartment rail ( 72 ) configured as a closed section hollow element of a variable cross section constructed using the manufacturing technique previously described.
- FIG. 8 illustrates a non-limiting example of a vehicular suspension subframe ( 74 ) configured from four closed section hollow elements of variable cross section constructed using the manufacturing technique previously described.
Abstract
A method is provided which forms a closed section hollow structural element by performing the following steps which include press forming an upper sheet metal component configured with two primary parallel downstanding interface flanges; press forming a lower sheet metal component configured with two primary parallel upstanding interface flanges; complementarily trimming the downstanding interface flanges and the upstanding interface flanges using five-axis laser cutting; and butt welding the interface flanges of the upper and lower sheet metal components to one another to form a continuous hollow structural element of variable cross section.
Description
- This patent application claims priority to PCT Application No. PCT/182010/055898 filed Dec. 10, 2010 and to U.S. provisional patent application No. 61/287662 filed Dec. 17, 2009. This patent application is a divisional of Ser. No. 13/525,337 filed on Jun. 17, 2012.
- It would be advantageous to create a vehicular structural member such as a motor compartment rail, suspension control arm or suspension subframe beam from a closed section hollow element that utilizes a conventional clamshell configuration but eliminates the overlapped joint of the prior art. It has been proven that for large volume applications such as those dictated by the automotive industry. Sheet metal press forming is the most cost-effective method of manufacturing structural components. Almost every vehicle currently produced utilizes a body structure and selected subframes constructed almost entirely from either aluminum or steel stampings manufactured using press forming techniques. Wherever closed section hollow elements are required they are generally constructed from two press formed open section sheet metal components, creating a clamshell configuration using either an overlapping section to facilitate a suitable fillet type weld joint or a outstanding flange to provide a double material spot weld joint. The primary aim of the present disclosure is to eliminate the redundant material associated with overlapping or flange type joints in clamshell closed section hollow elements.
- The most efficient type of weld joint is a butt arrangement where the two components being structurally joined meet along a tangent interface at their open edges so that there is no overlapping of material. This butt joint can then be welded using MIG, TIG, Arc, Laser or similar means creating a continuous structural attachment of the two components. The quality of this welded butt joint is extremely sensitive to the gap between to the two components and the differential thickness of the materials of the two components. The differential thickness can be controlled by correct specification during the design process. The gap between the two components is dependent on manufacturing process capability. When the two components are constructed from stamped sheet metal using press formed techniques the open edges cannot be developed to interface with a zero gap due to limitations in the process. It is for this reason that press formed clamshell configurations use either an overlapping section to facilitate a suitable fillet type weld joint or an outstanding flange to provide a double material spot weld joint.
- The most effective process for continuous structural attachment of two metal components is laser welding as laser welding imparts significantly less heat than other welding techniques. Laser welding also generally does not require filler material and has significantly faster application speed. However, laser welding requires even tighter tolerances on butt joint gaps than other welding techniques and so is generally only applied to overlapping material configurations. A closed section hollow element constructed from two press formed open section sheet metal components configured as a clamshell with structural attachment created by laser welding of a butt joint at the interface between the components would offer a significant weight and cost advantage over the configurations of the prior art.
- In an embodiment of the present disclosure, a closed section hollow element is constructed from an upper sheet metal stamped component with a generally open section manufactured using press forming techniques and configured with two primarily parallel downstanding interface flanges and a lower sheet metal stamped component with a generally open section manufactured using press forming techniques and configured with two primarily parallel upstanding interface flanges. After press forming the upper sheet metal stamped component and lower sheet metal stamped component are rigidly held in dimensional compliance by a purpose built fixture and the upstanding and downstanding interface flanges are complementarily trimmed using five-axis laser cutting. The fixture facilitates movement of the upper sheet metal stamped component and lower sheet metal stamped component into contact with each other along their entire interface with a zero gap while continuing to rigidly hold the components in dimensional compliance. The upper sheet metal stamped component and lower sheet metal stamped component are then structurally attached along the zero gap interface by a continuous laser butt weld while being rigidly held in the fixture. Because the components are rigidly held in dimensional compliance and the five axes trimming operation is undertaken in the same fixture the zero gap interface is absolutely maintained and a high quality laser welded joint with no redundant material overlap, very little heat effect and high processing speed is achieved. The result is a continuous hollow structural element of a variable cross section that has a high level of dimensional integrity because once the two sheet metal stamped components are structurally attached they hold each other in dimensional compliance once removed from the fixture thereby eliminating the effects of material springbuck and forming inaccuracies in the individual components.
- In this manner, a highly efficient closed section hollow element is created that utilizes less material than structurally equivalent overlapped or flanged clamshell configurations thereby achieving a lower mass and lower cost solution. Additionally the closed section hollow element of the present disclosure can be constructed with cost effective press forming tools because highly accurate sheet metal stamped components are no longer required as the fixture provides the required dimensional tolerances during trimming and welding. An additional advantage of the closed section hollow element of the present disclosure is that its cross section area can be greatly varied along its length with far higher ratios than conventional closed section, non-overlapping joint arrangements produced by roll forming, blow forming or hydroforming.
-
FIG. 1 is a perspective view of the inventive closed section hollow element; -
FIG. 2 is an expanded perspective view of the inventive closed section hollow element; -
FIG. 3 is a perspective view of the components of the inventive closed section hollow element partially installed in the purpose built fixture; -
FIG. 4 is a perspective view of the purpose built fixture with the components of the inventive closed section hollow element fully installed and trimmed; -
FIG. 5 is a perspective view of the purpose built fixture with the components of the inventive closed section hollow element fully installed during laser welding; -
FIG. 6 is a perspective view of an application of the inventive closed section hollow element; -
FIG. 7 is a perspective view of a further application of the inventive closed section hollow element; -
FIG. 8 is a perspective view of another application of the inventive closed section hollow element. - Referring to
FIGS. 1 and 2 , a closed section hollow element (1) is substantially constructed from an upper sheet metal stamped component (10) and a lower sheet metal stamped component (20). Both of the sheet metal stamped components are manufactured by press forming a flat sheet of steel, aluminum or other suitable metal or alloy into a required open section shape which is dictated by the final application's structural and packaging requirements. The upper sheet metal stamped component (10) is configured with two primarily parallel downstanding interface flanges (12)(14). As shown in the non-limiting example ofFIGS. 1 and 2 , the lower sheet metal stamped component (20) is configured with two primarily parallel upstanding interface flanges (22)(24). The downstanding interface flanges (12)(14) of the upper sheet metal component (10) are five-axes laser trimmed after press forming to create highly accurate interface edges (16)(18). The upstanding interface flanges (22)(24) of the lower sheet metal component (20) are five-axes laser trimmed after press forming to create highly accurate interface edges (26)(28). The interface edges (16)(18)(26)(28) are complementarily trimmed via a five-axes laser during a single operation while the upper sheet metal stamped component (10) and a lower sheet metal stamped component (20) are rigidly held in dimensional compliance by a purpose built fixture. In this manner the interface edges (26)(28) of the upstanding interface flanges (22)(24) and the interface edges (16)(18) of the downstanding interface flanges (12)(14) are configured to tightly match with a zero gap. This zero gap interface (also referred to as “interface”) facilitates a high quality non-linear weld (30) that structurally attaches the upper sheet metal stamped component (10) and a lower sheet metal stamped component (20) so as to create a continuous hollow structural element (1) having a variable cross section. -
FIG. 3 illustrates a non-limiting example of a purpose built fixture (40) configured to rigidly hold the upper sheet metal stamped component (10) and lower sheet metal stamped component (20) with the sheet metal stamped components shown prior to installation in the purpose built fixture (40) held at a pre-determined distance by the spacer blocks (42).FIG. 4 illustrates the purpose built fixture (40) with the upper sheet metal stamped component (10) and lower sheet metal stamped component (20) fully installed in the fixture (40) and the interface edges (16)(18)(26)(28) having been complementarily trimmed via a five-axes laser. The scrap material (50)(52) that contains inaccurate formed edges (54)(56) is shown detached from the interface flanges (12)(14)(22)(24). -
FIG. 5 illustrates the purpose built fixture (40) with the spacer blocks retracted (42) and the upper sheet metal stamped component (10) and lower sheet metal stamped component (20) brought into contact with each other along their previously laser trimmed interface edges (16)(18)(26)(28) creating a zero gap condition. A laser beam (60) is illustrated completing a welded butt joint (30) by butt welding along the entire zero gap interface so as to create a continuous hollow structural element (1) of a variable cross section. -
FIG. 6 illustrates a non-limiting example of a vehicular suspension arm (70) configured as a closed section hollow element of a variable cross section constructed using the manufacturing technique previously described. -
FIG. 7 illustrates a non-limiting example of a vehicular motor compartment rail (72) configured as a closed section hollow element of a variable cross section constructed using the manufacturing technique previously described. -
FIG. 8 illustrates a non-limiting example of a vehicular suspension subframe (74) configured from four closed section hollow elements of variable cross section constructed using the manufacturing technique previously described.
Claims (4)
1. A method of forming a closed section hollow structural element comprising:
press forming an upper sheet metal component with a generally open section and configured with two primary parallel downstanding interface flanges;
press forming a lower sheet metal component with a generally open section and configured with two primary parallel upstanding interface flanges;
complementarily trimming the downstanding interface flanges and the upstanding interface flanges using five-axis laser cutting; and
butt welding the interface flanges of the upper and lower sheet metal components to one another to form a continuous hollow structural element of variable cross section.
2. The method of forming a closed section hollow structural element as defined in claim 1 , wherein the upper and lower sheet metal components are held in dimensional compliance in a fixture during the step of complementarily trimming the downstanding interface flanges and the upstanding interface flanges.
3. The method of forming a closed section hollow structural element as defined in claim 1 , wherein the trimmed edges of the upper and lower components are welded to one another by a continuous laser butt weld.
4. The method as defined in claim 2 , which further comprises subsequent to complimentary trimming of the interface flanges, moving the upper sheet metal component and the lower sheet metal component into contact with each other while continuing to rigidly hold them in the fixture, and structurally attaching the components along the interface by a butt weld while rigidly holding the components in a fixture.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/866,810 US10226839B2 (en) | 2009-12-17 | 2015-09-25 | Butt jointed closed section hollow structural element |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US28766209P | 2009-12-17 | 2009-12-17 | |
PCT/IB2010/055898 WO2011073949A1 (en) | 2009-12-17 | 2010-12-16 | Butt jointed closed section hollow structural element |
US13/525,337 US20130337285A1 (en) | 2012-06-17 | 2012-06-17 | Butt jointed closed section hollow structural element |
US14/866,810 US10226839B2 (en) | 2009-12-17 | 2015-09-25 | Butt jointed closed section hollow structural element |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/525,337 Division US20130337285A1 (en) | 2009-12-17 | 2012-06-17 | Butt jointed closed section hollow structural element |
Publications (3)
Publication Number | Publication Date |
---|---|
US20160016260A1 US20160016260A1 (en) | 2016-01-21 |
US20180297149A9 true US20180297149A9 (en) | 2018-10-18 |
US10226839B2 US10226839B2 (en) | 2019-03-12 |
Family
ID=49756187
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/525,337 Abandoned US20130337285A1 (en) | 2009-12-17 | 2012-06-17 | Butt jointed closed section hollow structural element |
US14/866,810 Active 2032-02-08 US10226839B2 (en) | 2009-12-17 | 2015-09-25 | Butt jointed closed section hollow structural element |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/525,337 Abandoned US20130337285A1 (en) | 2009-12-17 | 2012-06-17 | Butt jointed closed section hollow structural element |
Country Status (1)
Country | Link |
---|---|
US (2) | US20130337285A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015016629A1 (en) * | 2014-12-26 | 2016-06-30 | Mazda Motor Corporation | Production of a welded structural element and welded structural element |
DE202016003525U1 (en) * | 2016-06-03 | 2016-06-23 | Liebherr-Werk Ehingen Gmbh | Telescopic profile with variable impact |
PL3600746T3 (en) * | 2017-03-21 | 2024-01-08 | Kirchhoff Automotive Deutschland Gmbh | Method for producing a carrier component for a vehicle application |
WO2019171150A1 (en) * | 2018-03-08 | 2019-09-12 | Arcelormittal | Method for producing a welded metal blank and thus obtained welded metal blank |
DE112019002832T5 (en) * | 2018-07-05 | 2021-03-04 | Shiloh Industries, Inc. | VEHICLE SUSPENSION COMPONENT WITH REINFORCEMENT FEATURE |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2189719A (en) * | 1937-07-12 | 1940-02-06 | Midland Steel Prod Co | Automobile frame |
BE468936A (en) * | 1940-01-11 | |||
US2685479A (en) * | 1944-11-25 | 1954-08-03 | Rockwell Spring & Axle Co | Tubular axle beam |
US2825431A (en) * | 1956-12-26 | 1958-03-04 | Standard Railway Equipment Mfg | Tapered pole and process of forming the same |
GB830366A (en) * | 1957-06-11 | 1960-03-16 | Ward & Payne Ltd | Improvements in or relating to spades, forks, and the like tools |
SE310641B (en) * | 1967-06-06 | 1969-05-12 | Asea Ab | |
DE2856030A1 (en) * | 1978-12-23 | 1980-06-26 | Sueddeutsche Kuehler Behr | CARTRIDGE FOR EXHAUST GAS PURIFICATION |
DE3616997A1 (en) * | 1986-05-21 | 1987-11-26 | Total Feuerschutz Gmbh | HAND FIRE EXTINGUISHER |
ATE73372T1 (en) * | 1986-12-22 | 1992-03-15 | Thyssen Stahl Ag | PROCESS FOR MANUFACTURING A MOLDED BODY FROM SHEET METAL PARTS OF DIFFERENT THICKNESSES. |
DE3803071A1 (en) * | 1988-02-03 | 1989-08-17 | Thyssen Industrie | METHOD FOR BLOW-WELDING THICK PLATES, ESPECIALLY FROM STEEL, BY MEANS OF AN ENERGY-LASER LASER BEAM, AND DEVICES THEREOF |
EP0743134B1 (en) * | 1995-05-15 | 2001-02-21 | Elpatronic Ag | Process and device for bonding two workpieces |
DE19742444C2 (en) * | 1997-09-26 | 1999-11-18 | Daimler Chrysler Ag | Process for producing a hollow body from two metal plates |
GB0021716D0 (en) * | 2000-09-05 | 2000-10-18 | Meritor Heavy Vehicle Sys Ltd | Vehicle suspension axle wrap |
KR20020064122A (en) * | 2001-02-01 | 2002-08-07 | 김창선 | Method of manufacturing for a curvered pipe |
US6554176B2 (en) * | 2001-03-15 | 2003-04-29 | Dana Corporation | Method of manufacturing a vehicle body and frame assembly including an energy absorbing structure |
US7726027B2 (en) * | 2003-06-06 | 2010-06-01 | Volvo Lastvagnar Ab | Method of manufacturing hollow structural elements |
DE102006020000B3 (en) * | 2006-04-26 | 2007-11-08 | Thyssenkrupp Steel Ag | Method for producing low-spring half shells |
US20130140868A1 (en) * | 2011-12-01 | 2013-06-06 | Toyota Motor Engineering & Manufacturing North America, Inc. | Discontinuous section tower tube |
-
2012
- 2012-06-17 US US13/525,337 patent/US20130337285A1/en not_active Abandoned
-
2015
- 2015-09-25 US US14/866,810 patent/US10226839B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20130337285A1 (en) | 2013-12-19 |
US20160016260A1 (en) | 2016-01-21 |
US10226839B2 (en) | 2019-03-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10226839B2 (en) | Butt jointed closed section hollow structural element | |
CA2783408C (en) | Butt jointed closed section hollow structural element | |
EP1949981B1 (en) | Composite of sheet metal parts | |
US20010000119A1 (en) | Hydroformed space frame and joints therefor | |
DE102012002254A1 (en) | Method of joining by roll flanging and solid-state welding and system for the same | |
US6426153B1 (en) | Tailored blank | |
JP2000197969A (en) | Blank for integrally forming and forming method thereof | |
JP2009190050A (en) | Joining method of vehicle body | |
CN105728970B (en) | The manufacturing method of welding structural body | |
US11383329B2 (en) | Method for producing a workpiece composite, and workpiece composite | |
CN105014310A (en) | Method of forming a vehicle body structure from a pre-welded blank assembly | |
JP2001507283A (en) | Molded member manufacturing method and molded member manufactured by the method | |
US20070163121A1 (en) | Metal frame and method for manufacturing the same | |
DE69602553D1 (en) | Butt welding process of two metallic sheet metal plates and automobile part produced by this process | |
JP4299705B2 (en) | Helicopter joint laser welding method for Sn or Pb plated steel sheet | |
US20050013954A1 (en) | Tailored tubular blanks and a method for the production thereof | |
US11110539B2 (en) | Methods and joints for welding sheets of dissimilar materials | |
JPH0471634B2 (en) | ||
JPH101068A (en) | Member joining structure for framed vehicle body | |
US20040197135A1 (en) | Sheet metal assembly and method to reduce weight | |
US20220266375A1 (en) | Method and system of fully bonded stiffening patches for automotive structural components | |
JP2019196252A (en) | Design panel structure of elevator and laser welding method of design panel | |
US20200147716A1 (en) | Methods and joints for welding sheets of dissimilar materials | |
JPH09193832A (en) | Weld structure of vehicle body | |
JP4698199B2 (en) | Closed section welded structure and manufacturing method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FEPP | Fee payment procedure |
Free format text: PETITION RELATED TO MAINTENANCE FEES GRANTED (ORIGINAL EVENT CODE: PTGR); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |