EP1126937B1 - Verfahren und zwischenprodukt zum herstellen eines hohlkörpers sowie ein durch ein derartiges verfahren hergestellter hohlkörper - Google Patents
Verfahren und zwischenprodukt zum herstellen eines hohlkörpers sowie ein durch ein derartiges verfahren hergestellter hohlkörper Download PDFInfo
- Publication number
- EP1126937B1 EP1126937B1 EP99950756A EP99950756A EP1126937B1 EP 1126937 B1 EP1126937 B1 EP 1126937B1 EP 99950756 A EP99950756 A EP 99950756A EP 99950756 A EP99950756 A EP 99950756A EP 1126937 B1 EP1126937 B1 EP 1126937B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet metal
- hollow body
- metal blank
- intermediate product
- wall
- 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.)
- Expired - Lifetime
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Classifications
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- 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
- B21D26/021—Deforming sheet bodies
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- 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
- B21D26/053—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 characterised by the material of the blanks
- B21D26/059—Layered blanks
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- 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
- B21D51/00—Making hollow objects
- B21D51/02—Making hollow objects characterised by the structure of the objects
- B21D51/14—Flattening hollow objects for transport or storage; Re-forming same
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- 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
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
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- 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
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
- B21D51/2669—Transforming the shape of formed can bodies; Forming can bodies from flattened tubular blanks; Flattening can bodies
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- 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
- Y10T29/49805—Shaping by direct application of fluent pressure
Definitions
- the present invention relates to a method for Manufacture of a hollow body from sheet metal, in particular from Aluminum or aluminum alloys, as indicated in the preamble of claim 1.
- the present invention further relates to a Intermediate product, as indicated in the preamble of claim 10, that for making one Hollow body used can be.
- the method known in the prior art is the Invention based on the object, a method and a Intermediate product for the production of a hollow body from sheet metal, especially of aluminum or aluminum alloys create the training with as little effort as possible of a large one that is available in an installed state available space (e.g. for tanks for Motor vehicles in the rear axle area) corresponding Allow hollow volume, while being smallest Forming radii and greatest forming depths can be achieved.
- Sheet metal cutting in particular made of aluminum or one Aluminum alloy, provided as a workpiece.
- all are general as workpiece material metallic materials with sufficient Resilience suitable. This ranges from Light metals over unalloyed and alloyed case-hardened steels up to towards temperable and stainless steels.
- Editing the Sheet metal cutting is preferably done in a known manner and Mechanically by cutting or thermally Flame or laser cutting.
- the sheet is cut to size in a suitable manner subsequent molding process in the area of one piece with the Sheet metal blank formed intermediate wall element folded and / or bent.
- the intermediate wall element forms here a section or part of the Sheet metal cut out, i.e. the intermediate wall element is in integrated into the sheet metal blank.
- This one-piece training facilitates the handling of the sheet metal blank as well as that Folding and / or bending significantly.
- the Productivity and accuracy of sheet metal cutting increased be, in particular in contrast to that in DE-A-195 31 035 method shown no individually shaped sections need to be soldered together.
- the through the invention Process to be produced in the hydroforming process Hollow bodies can thus be joined, e.g. soldered, welded or flanged constructions from individual sheet metal blanks replace and thus avoid problems with leaks or dynamic fractures in the joining zone and thereby guarantee improved strength properties.
- Bending can be done in this step, for example be carried out by roll forming, with a large one Design freedom with regard to the shape of the Wall intermediate element results.
- a very sharp-edged bending of the sheet in the area of the intermediate wall element possible so that a fold in several, in essential superimposed layers is possible. Consequently can the individual sheet layers, for example, double, triple or folded in layers.
- the intermediate wall element can also regarding the Positioning of edge areas of the sheet metal blank relatively relationships are established that the subsequent connection of the edge areas easier.
- the edge areas of the sheet metal blank are connected put together, preferably with a certain Overlap, and for example by Soldering, welding, e.g. Squeeze seam welding or Laser beam welding, or flanging preferably along the longitudinal extension of the edges of the sheet metal blanks attached to each other.
- Soldering welding, e.g. Squeeze seam welding or Laser beam welding, or flanging preferably along the longitudinal extension of the edges of the sheet metal blanks attached to each other.
- a through the sheet metal cutting and the at least one folded intermediate wall element limited Cavity through a suitable connection for example in the sheet metal blank or the intermediate wall element is tight inserted (e.g. by soldering) lines or pipe sockets hydraulic or pneumatic pressure medium introduced.
- the sheet metal is subsequently cut by the printing medium and the folded wall intermediate element with internal high pressure acted upon, whereby the multi-layer folded Wall intermediate element up to the full length Formation of the hollow body is unfolded. So it happens According to the invention, free formation of the hollow body shape by unfolding the intermediate wall element without the Workpiece is subject to significant material expansion.
- the desired one So not shape from the geometry of the Tools involved in hydroforming processes e.g. the die shape, fixed, but by the shape and size of the sheet metal blank provided at the beginning of the process and / or intermediate wall element.
- the invention is therefore based on the idea of a primary one Volume increase of the hollow body by unfolding and unfolding to the extended length of the multilayer trained intermediate wall element to provide without however, there is a substantial expansion in the material cause.
- This has the great advantage that the full elasticity of the material for additional local Deepening by stretching or deep drawing in the course of one optionally subsequent hydroforming is still available stands.
- the method according to the invention especially when using materials such as Aluminum, which have low deformability, Stress peaks in the material avoided, so that a Hollow body with small forming radii and large forming depths can be trained. So this is suitable Process according to the invention is particularly good for the production of Workpieces that are manufactured in lightweight construction and at who therefore use the specifically lighter material Aluminum is required, such as Tanks for Motor vehicles, airplanes, ships or the like.
- the present invention is therefore based on the idea based on a method and an intermediate for Manufacture of a hollow body to create the training more complex geometries, higher dimensional accuracy and Strength properties with reduced workpiece mass in ensure a hollow body.
- the unfolded wall intermediate element and / or the Sheet cutting after the unfolding process by increased Internal pressure in the stretching or deep drawing process are deformed at least in sections. Since the First cut the sheet metal with the intermediate wall element through the applied hydraulic or pneumatic Internal pressure only unfolded and not deep drawn or stretched is thus, by the inventive method Possibility created the hollow body in a second The shape of the shape is precisely matched to the desired shape by means of high pressure to deform.
- the shaping of the hollow body to be produced preferred that at least one upper and one lower Sheet metal section of the sheet metal blank when folding and / or Bends to be overlaid.
- the Sheet metal sections preferably parallel and essentially coplanar arranged one above the other, which creates an im essentially closed cross-sectional shape of a flat Hollow body results. This facilitates the following Overlap and join the edge areas of the sheet metal blank considerably.
- the multi-layer wall intermediate element If through the multi-layer wall intermediate element an opening between the top and the bottom sheet section, it becomes a relief preferred to maintain a closed cavity Spacer, e.g. made of sheet metal, between the superimposed end faces of the sheet metal sections in the Area of the opening.
- a closed cavity Spacer e.g. made of sheet metal
- This can be a distance or Free space created by the side folds of the multilayer arranged wall intermediate element between the Sheet metal sections are created, bridged in an advantageous manner and filled out so that a secure closure of the Cavity is guaranteed.
- the flat one Sheet cutting in the course of process step a) with a essentially rectangular outline or plan provide.
- a floor plan can be on the one hand in a simple manner and on the other hand ensures easy folding or bending of the sheet metal blank.
- Outline shapes possible for sheet metal cutting e.g. round, oval, square or polygonal.
- on the Sheet cutting also approaches or via the e.g. rectangular outline outwardly projecting sections be trained, which is advantageously in the context of Process step b) are folded in to the later Unfold the desired unfolded sheet metal sections for one to provide large void volume.
- This training of flat sheet metal cut in various shapes and sizes ensures a diverse design for the hollow body to be produced.
- the workpiece For preforming or shaping to the final contour of the hollow body to be produced, it offers advantages folded sheet metal blank before or after Unfolding molding process in a closable form insert to facilitate the insertion of the folded sheet metal blank and the removal of the formed Hollow body is divided and the mold cavity preferably the desired outer contour of the hollow body to be produced equivalent.
- a liquid or gaseous pressure medium By flooding the workpiece with a liquid or gaseous pressure medium, the workpiece is from the inside pressurized and simultaneously with or after unfolding the multi-layer wall intermediate element reshaped to the inner contour of the form.
- the Shape provides additional stabilization of the workpiece during forming, so that this procedure is also difficult formable workpieces, e.g. made of aluminum or Aluminum alloys, easily a strong deformation can be subjected.
- a manufactured by the inventive method Hollow body has at least one due to high internal pressure unfolded intermediate wall element.
- This hollow body has the already in connection with the invention Advantages described process like sharp-edged contours, small forming radii and large forming depths with a large one Hollow body volume and great strength from production a single sheet blank.
- a stable hollow body with good Strength properties are preferred that this one in has a substantially axially or rotationally symmetrical shape.
- the manufacture is cuboid, however also oval, polygonal or polygonal hollow body possible.
- the formation of such axially symmetrical bodies results in an advantageous manner from the arrangement of an even number, for example two, intermediate wall elements in the workpiece to be formed.
- the hollow body is essentially partial shape expanded in one or more planes and directions having.
- the hollow body can be, for example take on a conical shape. This shape can be simple Way by the arrangement of only one wall intermediate element realized in the workpiece to be formed become.
- the object underlying the invention is further by an intermediate product for producing a hollow body solved according to the features of claim 10.
- this shows Intermediate product according to the invention for producing a Hollow body made of sheet metal, in particular aluminum or Aluminum alloy, a sheet metal blank as well as at least one Wall intermediate element that is integral with the Sheet metal blank formed and in several, essentially superimposed layers are folded and / or bent.
- This results in an intermediate wall element sandwich-like structure.
- edge areas of the Sheet metal cutting with each other e.g. by soldering, welding, Flanging or the like, connected so that a Intermediate with a closed cross-sectional contour in The shape of a flat hollow body is created.
- the intermediate wall element or several intermediate wall elements designed in this way, at least in sections to the full Length to be unfoldable.
- the folded wall intermediate elements can, as before described, by the folded wall intermediate elements the desired volume expansion essentially without Material expansion take place.
- the volume of the to produce hollow body effectively while maintaining the full elasticity of the material can be increased.
- the one-piece design of the intermediate wall element a simplification in the sheet metal blank handling, since not several individual sheet metal blanks have to be put together with a lot of work.
- joining zones are avoided, which means that The strength of the workpiece is increased.
- this is at least an upper and comprises a lower sheet metal section, which essentially are arranged one above the other. This simplifies it Connect and seal the edge areas of the Intermediate product, which leads to the effective creation of a High pressure for an internal high pressure forming process is required.
- the intermediate wall element in one area extends between the upper and lower sheet metal section.
- the wall intermediate element by internal high pressure in Cross section of the intermediate product seen from the inside of the through the intermediate formed cavity to the outside to press and to unfold and expand without material stretching stretch.
- the wall intermediate element folded for example to double, triple or multilayer be arranged between the two sheet metal sections.
- blow nozzle for introducing the print medium into the intermediate product it is preferred that this a blow nozzle or the like includes.
- the blow nozzle can be on any Place in the sheet metal blank or the intermediate wall element be inserted and makes filling easier of the cavity enclosed by the intermediate with the Print media.
- FIG. 1 in a perspective view Intermediate 2 for producing a hollow body is made formed a single thin-walled sheet metal blank 4.
- the sheet metal blank 4 in the present case Aluminum, so that the workpiece mass can be kept low can and a particularly light intermediate 2 is provided.
- At the right and left in Fig. 1 recognizing oblique sides of the intermediate 2 are each Folds 6 in the form of an intermediate wall element 8 arranged or folded.
- the intermediate wall elements 8 are in one piece from a workpiece with sheet metal blank 4 formed, the folds 6 of the wall intermediate elements 8 into one by intermediate 2 trained flat cavity 10 extend. This cavity 10 is therefore completely surrounded by the sheet metal blank 4 and limited.
- the sheet metal blank 4 has two Top of the intermediate 2 located top Sheet metal sections 12 and one arranged on the underside lower sheet metal section 14.
- the upper sheet metal sections 12 are essentially parallel and coplanar over the lower one Sheet metal section 14 is placed and thus delimit the cavity 10 of the intermediate product 2 in its width and Longitudinal extent.
- FIG. 1 Edge areas 16 of the sheet metal blank 4 at the top of the Intermediate 2 connected.
- FIG. 1 are yourself overlapping inner and outer surfaces of the upper Sheet metal sections 12 stacked and soldered, so that Intermediate 2 only in the direction of its longitudinal extent has a solder connection.
- the in Fig. 1 are front and rear end of the intermediate 2 shown end faces 18 of the intermediate product 2 so compressed that the sections between each Layers of the folds 6 lie on one another, one Connection, in this case by soldering is.
- the soldering can be done using the Nokolok soldering method in a continuous furnace, in which Potassium fluoroaluminate is used as a flux.
- FIG. 2 are in an enlarged perspective Cross-sectional view along the line II-II of FIG. 1 die Folds 6 of the intermediate wall elements 8 into individual layers shown.
- this first embodiment of the intermediate product 2 according to the invention are the wall intermediate elements 8 mirror-symmetrical to each other between the upper and lower sheet metal section 12, 14 of the Sheet metal blank 4 arranged and protrude into the cavity 10 of the Intermediate 2 into it.
- the intermediate wall elements 8 are bent into double layers in this case and in the bending radii of the sheet metal blank 4 folded in four layers, see above that a flat hollow body is formed. Furthermore, in the Fig.
- Cross-sectional view is a compressed and im
- the soldered edge area of an end face 18 of the intermediate product 2 shown.
- spacer 24 made of sheet metal is sealed.
- the spacer 24 in the Opening inserted and fixed to the top and bottom Sheet metal section 12, 14 and the adjacent areas of the Wall intermediate element 8 at points 23, e.g. by soldering, connected.
- the spacer 24 is preferably made of one the sheet metal blank 4 corresponding material. It however, can also be used to connect the End faces 18 suitable material, such as e.g. an aluminum alloy, steel, galvanized sheet or high-strength sheets.
- FIG. 4 The built up in the way shown above Intermediate 2 is then when using the Hydroforming process for one in FIG. 4 cuboid hollow body 26 shown formed.
- Hollow body 26 can be, for example, the basic shape act for a motor vehicle tank.
- a high pressure liquid such as an oil in which through the sheet metal blank 4 with the wall intermediate elements 8 trained flat cavity of the Intermediate initiated.
- the print medium high enough pressure to hold the top and the bottom lower sheet metal section 12, 14 to move outwards and thus to remove from each other as well as the intermediate wall elements 8 unfold, i.e. the curved and / or folded wall intermediate elements 8 in their outstretched state.
- FIG. 5 is a second embodiment of the intermediate 2 according to the invention schematically in Cross section shown. This differs from that in Fig. 2 shown intermediate 2 essentially with regard to the design of the intermediate wall elements 8.
- the number the layers formed in the intermediate wall element 8 Influence on the size of the volume to be manufactured Hollow body 26 are taken.
- the edge areas 16 of the sheet metal blank 4 via a solder connection 23 Formation of a flat hollow body attached to each other.
- FIG. 6 in a schematic cross-sectional view illustrated third embodiment of the invention Intermediate is opposite to that shown in Fig. 5 second embodiment with regard to the formation of the Folds 6 of the intermediate wall elements 8 designed differently.
- the intermediate wall elements 8, as in FIG can be seen in each case a fold 6, which over the outer edge portions 22 of the upper and the two lower Protruding sheet metal sections 12, 14. Accordingly, the in Fig. 6 shown intermediate wall elements 8 layers and thus also folds 6 of different lengths.
- the Unfolding the intermediate 2 unfold individual folds 6 of the wall intermediate elements 8, wherein the long fold 6 moves from the outside in and closes a wall part of the hollow body to be manufactured becomes.
- the size and length of those in the intermediate wall element 8 trained layers or folds Size of the inner cross section of the hollow body to be produced determines the size and length of those in the intermediate wall element 8 trained layers or folds Size of the inner cross section of the hollow body to be produced.
- FIG. 7 The one shown schematically in cross section in FIG. 7 fourth embodiment of the invention
- the intermediate product is different from that in FIG. 2 illustrated first embodiment, the wall intermediate elements 8 each designed differently.
- the wall intermediate element shown on the right in FIG. 7 8 provided in three layers, while that in the Drawing left between the top 12 and the bottom Intermediate wall element 8 located in sheet metal section 14 is only double-layered.
- the intermediate wall elements 8 is the formation of a partially unfolded Hollow body shape possible, as shown in Fig. 8.
- Fig. 8 is from the intermediate product 2 of FIG. 7 through the high pressure forming process of unfolded hollow body 26 shown schematically, the one-sided conical shape having.
- the desired shape and geometry of the hollow body 26 be determined.
- hollow body is also a not shown Connection, for example a blow nozzle 20, as in Fig. 1st shown, or any tube, for feeding the hydraulic or pneumatic pressure medium provided.
- the upper sheet metal sections 12 expanded and deformed outward as in FIG. 8 is indicated by dash-dotted lines, however any other location of the hollow body 26 further extended and to the desired final hollow body contour can be deformed.
- the Hollow body 26 inserted into a mold and the sheet metal blanks 4 by increasing the internal pressure on the contour of the not mold cavity shown to be brought to the plant.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Moulding By Coating Moulds (AREA)
Description
- Fig. 1
- eine perspektivische Ansicht einer ersten Ausführungsform eines erfindungsgemäßen Zwischenprodukts;
- Fig. 2
- eine vergrößerte Querschnittsansicht des erfindungsgemäßen Zwischenproduktes entlang der Linie II-II nach Fig. 1;
- Fig. 3
- eine vergrößerte Querschnittsansicht des erfindungsgemäßen Zwischenproduktes entlang einer Stirnseite mit eingelegtem Abstandsstück;
- Fig. 4
- eine perspektivische Ansicht eines erfindungsgemäßen Hohlkörpers, der aus dem Zwischenprodukt nach Fig. 1 hergestellt ist;
- Fig. 5
- eine schematische Querschnittsansicht einer zweiten Ausführungsform des erfindungsgemäßen Zwischenproduktes;
- Fig. 6
- eine schematische Querschnittsansicht einer dritten Ausführungsform des erfindungsgemäßen Zwischenproduktes;
- Fig. 7
- eine schematische Querschnittsansicht einer vierten Ausführungsform des erfindungsgemäßen Zwischenproduktes; und
- Fig. 8
- eine perspektivische Ansicht eines erfindungsgemäßen Hohlkörpers, der aus dem Zwischenprodukt nach Fig. 7 hergestellt ist.
Claims (16)
- Verfahren zum Herstellen eines Hohlkörpers (26) aus Blech, insbesondere aus Aluminium oder Aluminiumlegierungen, mit dem Schritt:a) Bereitstellen eines flachen Blechzuschnitts (4); gekennzeichnet durch die folgenden Schritte:b) Falten und/oder Biegen von zumindest einem Wandungs-Zwischenelement (8), das einstückig mit dem Blechzuschnitt (4) ausgebildet wird, in mehrere, übereinanderliegende Lagen;c) Aneinanderlegen, vorzugsweise Aufeinanderlegen mit einer gewissen Überlappung, und Verbinden von Randbereichen (16, 18) des Blechzuschnitts (4);d) Beaufschlagen des Blechzuschnitts (4) und des gefalteten Wandungs-Zwischenelementes (8) mit einem hydraulischen oder pneumatischen Innenhochdruck, so daß das gefaltete Wandungs-Zwischenelement (8) zur Bildung des Hohlkörpers (26) frei entfaltet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das entfaltete Wandungs-Zwischenelement (8) und/oder der Blechzuschnitt (4) nach dem Verfahrensschritt d) durch gesteigerten Innenhochdruck im Streck- oder Tiefziehverfahren zu einer gewünschten Kontur zumindest abschnittsweise verformt werden.
- Verfahren nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß im Rahmen des Verfahrensschritts b) zumindest ein oberer und zumindest ein unterer Blechabschnitt (12, 14) des Blechzuschnitts (4) übereinandergelegt werden.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die übereinandergelegten Blechabschnitte (12, 14) vor dem Verfahrensschritt d) zumindest abschnittsweise an ihren Stirnseiten (18) verbunden werden.
- Verfahren nach Anspruch 3 oder Anspruch 4, dadurch gekennzeichnet, daß zumindest ein Abstandsstück (24) zwischen den übereinandergelegten Stirnseiten (18) der Blechabschnitte (12, 14) angeordnet wird, welches einen durch die seitlichen Falten entstandenen Freiraum ausfüllt.
- Verfahren nach zumindest einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß wenigstens ein lappenförmiger Abschnitt an dem oberen oder unteren Blechabschnitt ausgebildet wird, der nach dem Verfahrensschritt b) auf die Stirnseite (18) des unteren oder oberen Blechabschnitts (12, 14) umgefaltet und mit dieser verbunden wird.
- Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der flache Blechzuschnitt (4) mit einem im wesentlichen rechteckförmigen Umriß hergestellt wird.
- Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der gefaltete Blechzuschnitt (4) vor oder nach dem Verfahrensschritt d) in eine verschließbare Form eingelegt wird, die an die Form des herzustellenden Hohlkörpers angepaßt ist.
- Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß als Druckmedium Öl mit Umgebungstemperatur oder erhitztes Öl eingesetzt wird.
- Zwischenprodukt zum Herstellen eines Hohlkörpers (26) aus Blech, insbesondere aus Aluminium oder Aluminiumlegierungen, welcheseinen Blechzuschnitt (4) aufweist,zumindest ein Wandungs-Zwischenelement (8), das einstückig mit dem Blechzuschnitt (4) ausgebildet und in mehrere, im wesentlichen übereinanderliegende Lagen gefaltet und/oder gebogen ist, undRandbereiche (16, 18), die zur Bildung des Zwischenprodukts (2) miteinander verbunden sind.
- Zwischenprodukt nach Anspruch 10, dadurch gekennzeichnet, daß dieses zumindest einen oberen und zumindest einen unteren Blechabschnitt (12, 14) umfaßt, die im wesentlichen parallel übereinander angeordnet sind.
- Zwischenprodukt nach Anspruch 10 oder Anspruch 11, dadurch gekennzeichnet, daß sich eine Faltung des Wandungs-Zwischenelement (8) in einen Bereich zwischen dem oberen und dem unteren Blechabschnitt (12, 14) erstreckt.
- Zwischenprodukt nach zumindest einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß die Blechabschnitte (12, 14) an ihren Stirnseiten (18) zumindest abschnittsweise miteinander verbunden sind.
- Zwischenprodukt nach zumindest einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, daß zumindest ein Abstandsstück (24) zwischen den übereinanderliegenden Stirnseiten (18) angeordnet ist.
- Zwischenprodukt nach zumindest einem der Ansprüche 10 bis 14, dadurch gekennzeichnet, daß dieses ein im wesentlichen flacher Hohlkörper ist.
- Zwischenprodukt nach zumindest einem der Ansprüche 10 bis 15, dadurch gekennzeichnet, daß dieses einen Blasstutzen (20) umfaßt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19851259 | 1998-11-06 | ||
DE19851259A DE19851259A1 (de) | 1998-11-06 | 1998-11-06 | Verfahren und Zwischenprodukt zum Herstellen eines Hohlkörpers sowie ein durch ein derartiges Verfahren hergestellter Hohlkörper |
PCT/EP1999/007896 WO2000027555A1 (de) | 1998-11-06 | 1999-10-19 | Verfahren und zwischenprodukt zum herstellen eines hohlkörpers sowie ein durch ein derartiges verfahren hergestellter hohlkörper |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1126937A1 EP1126937A1 (de) | 2001-08-29 |
EP1126937B1 true EP1126937B1 (de) | 2002-09-11 |
Family
ID=7886947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99950756A Expired - Lifetime EP1126937B1 (de) | 1998-11-06 | 1999-10-19 | Verfahren und zwischenprodukt zum herstellen eines hohlkörpers sowie ein durch ein derartiges verfahren hergestellter hohlkörper |
Country Status (8)
Country | Link |
---|---|
US (1) | US6557233B1 (de) |
EP (1) | EP1126937B1 (de) |
JP (1) | JP2002529246A (de) |
AT (1) | ATE223767T1 (de) |
CA (1) | CA2353855A1 (de) |
DE (2) | DE19851259A1 (de) |
ES (1) | ES2180330T3 (de) |
WO (1) | WO2000027555A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19938847C2 (de) * | 1999-08-17 | 2002-09-12 | Alcan Gmbh | Verfahren zur Herstellung eines Hohlkörpers |
DE10016025B4 (de) | 2000-03-31 | 2005-06-16 | Hde Solutions Gmbh | Verfahren zur Herstellung von Hohlkörpern |
US8516947B1 (en) * | 2003-04-22 | 2013-08-27 | Food Equipment Technologies Company, Inc | Food equipment housing with arcuate panels |
JP4281463B2 (ja) * | 2003-08-11 | 2009-06-17 | 日産自動車株式会社 | 液圧成形方法および液圧成形装置 |
US10357127B2 (en) * | 2004-07-02 | 2019-07-23 | Food Equipment Technologies Company, Inc. | Sheet metal beverage brewer housing and method of making same |
US8053034B1 (en) | 2008-02-19 | 2011-11-08 | Colin Dickinson | High performance tank systems |
WO2012159856A1 (en) * | 2011-05-03 | 2012-11-29 | Jakob Przybylo Architekt | Method for manufacturing inner pressure deformed sheet metal structures |
KR101410457B1 (ko) * | 2013-01-14 | 2014-06-25 | 인하대학교 산학협력단 | 스포츠 라켓 프레임의 제조방법 |
JP7510319B2 (ja) * | 2020-09-28 | 2024-07-03 | 矢崎エナジーシステム株式会社 | 金属容器の製造方法、及び、金属容器 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734473A (en) * | 1956-02-14 | reynolds | ||
US2503190A (en) * | 1947-04-07 | 1950-04-04 | Mcnamar Boiler & Tank Company | Method of forming spherical containers |
US2641830A (en) | 1948-11-02 | 1953-06-16 | Chicago Pump Co | Method of making corrugated tubes |
DE1170764B (de) * | 1962-12-28 | 1964-05-21 | Dr Fritz Bruns | Verfahren zum Herstellen von formhaltigen ringfoermigen Koerpern aus flexiblem Material, wie z. B. Papier, Kunststoff-, Metallfolie od. dgl. |
DE1207782B (de) * | 1965-02-05 | 1965-12-23 | Dr Fritz Bruns | Verfahren zum Herstellen von formhaltigen ringfoermigen doppelwandigen Hohlkoerpern aus ebenem Material, wie z. B. Papier, Kunststoff, Glasfaserkunststoff, Metallfolie oder -blech od. dgl. |
US4588651A (en) * | 1983-02-16 | 1986-05-13 | Rockwell International Corporation | Accordion expansion process |
US5372027A (en) * | 1989-11-29 | 1994-12-13 | Armco Steel Company, L.P. | Controlled material flow hydroforming |
DE4020356A1 (de) | 1990-06-27 | 1992-01-09 | Pi Patente Gmbh | Recyclingbarer behaelter, dessen inhalt die steifigkeit des behaelters unterstuetzt, sowie recycling-verfahren fuer den behaelter |
JP3095882B2 (ja) | 1992-05-28 | 2000-10-10 | 昭和アルミニウム株式会社 | 断面最大長さの大きな中空材の製造方法 |
DE4232161A1 (de) * | 1992-09-25 | 1994-03-31 | Audi Ag | Verfahren zum Herstellen eines Hohlkörpers |
JPH08168814A (ja) | 1994-12-15 | 1996-07-02 | Furukawa Electric Co Ltd:The | Al合金製自動車構造用中空部材の製造方法 |
DE19531035C2 (de) * | 1995-08-23 | 1998-10-15 | Alcan Gmbh | Verfahren zur Herstellung von Hohlkörpern aus Aluminium oder Aluminiumlegierungen |
-
1998
- 1998-11-06 DE DE19851259A patent/DE19851259A1/de not_active Ceased
-
1999
- 1999-10-19 EP EP99950756A patent/EP1126937B1/de not_active Expired - Lifetime
- 1999-10-19 WO PCT/EP1999/007896 patent/WO2000027555A1/de active IP Right Grant
- 1999-10-19 AT AT99950756T patent/ATE223767T1/de not_active IP Right Cessation
- 1999-10-19 ES ES99950756T patent/ES2180330T3/es not_active Expired - Lifetime
- 1999-10-19 JP JP2000580771A patent/JP2002529246A/ja active Pending
- 1999-10-19 CA CA002353855A patent/CA2353855A1/en not_active Abandoned
- 1999-10-19 US US09/831,059 patent/US6557233B1/en not_active Expired - Fee Related
- 1999-10-19 DE DE59902685T patent/DE59902685D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19851259A1 (de) | 2000-05-18 |
ATE223767T1 (de) | 2002-09-15 |
WO2000027555A1 (de) | 2000-05-18 |
US6557233B1 (en) | 2003-05-06 |
JP2002529246A (ja) | 2002-09-10 |
CA2353855A1 (en) | 2000-05-18 |
DE59902685D1 (de) | 2002-10-17 |
ES2180330T3 (es) | 2003-02-01 |
EP1126937A1 (de) | 2001-08-29 |
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