EP3960319A1 - Method for calibrating a metal profile blank with at least one solid wall - Google Patents
Method for calibrating a metal profile blank with at least one solid wall Download PDFInfo
- Publication number
- EP3960319A1 EP3960319A1 EP21190565.8A EP21190565A EP3960319A1 EP 3960319 A1 EP3960319 A1 EP 3960319A1 EP 21190565 A EP21190565 A EP 21190565A EP 3960319 A1 EP3960319 A1 EP 3960319A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- profile blank
- pressing tool
- blank
- hollow chamber
- 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.)
- Pending
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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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control
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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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/14—Recontouring
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- 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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/142—Making profiles
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- 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
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
- B21C35/023—Work treatment directly following extrusion, e.g. further deformation or surface treatment
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- 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
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
- B21C35/03—Straightening the work
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- 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
- B21C37/151—Making tubes with multiple passages
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- 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
- B21C37/155—Making tubes with non circular section
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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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/10—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts between rams and anvils or abutments
Definitions
- the invention relates to a method for calibrating a metallic profile blank with at least one solid wall. Furthermore, the invention relates to a profile produced according to the method according to the invention, in particular a hollow chamber profile. Finally, the invention further relates to a pressing tool for calibrating a profile blank according to the invention with a method according to the invention.
- profiles in particular also hollow chamber profiles made of aluminum or steel alloys, are used as material for floors and walls for many applications, which have to be joined together.
- an interior space for accommodating batteries or the like can be provided.
- the interior is sealed fluid-tight by a cover and a seal.
- the bottom and the walls, each consisting of one or more profiles, are also joined together in a fluid-tight manner, for example by friction stir welding or cold press joining.
- the profiles are aligned with one another in a clamping device, in particular before joining, and the joining layer is positioned and then joined in this way.
- the disadvantage here is the introduction of high internal stresses, which can have an adverse effect on the durability and crash properties of the parts produced in this way, for example a battery container.
- tolerance compensation elements must also be arranged on such profiles that are to be joined together in order to connect the profiles that are joined with little dimensional accuracy, for example, to internal transverse walls or internal longitudinal walls.
- a hollow chamber profile is known in which a hollow chamber is widened by pulling a mandrel through it, as a result of which the surfaces of the hollow chamber profile are marked out and this is calibrated in a simple manner.
- hollow chamber profiles can be calibrated very well with such expansion processes.
- the outlay in terms of equipment and process engineering is relatively large and complex, since the mandrels that are used to expand the hollow chamber profile must be very precisely adapted to the respective hollow chamber of the hollow chamber profile. It should be noted that the mandrel must act on the hollow chamber of the hollow chamber profile at the beginning of the expansion and also ensure that the exact and calibrated shape of the hollow chamber profile is set at the end of the calibration.
- a similar procedure is used in DE 10 2014 004 183 A1 described.
- a hollow chamber profile is calibrated using hydroforming.
- this object is achieved by a method for calibrating a metal profile blank with at least one solid wall with all the method steps of patent claim 1.
- Advantageous refinements of the method can be found in dependent claims 2 to 9.
- the object is achieved by a profile with all the features of patent claims 10 and 11.
- the object is achieved by a pressing tool for calibrating a profile blank with all the features of patent claim 12.
- the method according to the invention makes it possible in a simple manner to calibrate a wide variety of extruded metallic profile blanks, in particular in their end regions, in order to compensate for connection tolerances and to enable the finally calibrated profile to be joined to other components.
- the profile blank has at least one element which is in particular but not necessarily plate-shaped and has a longitudinal extension, a transverse extension and a vertical extension.
- the profile blanks can be produced with minimal weight, since no machining steps are required for calibration.
- a profile blank made of an extruded aluminum alloy is used.
- Such materials have proven to be advantageous in vehicle construction due to their light weight and the energy advantages associated therewith during operation of the motor vehicle.
- the inherent material property of the respective profile blanks, namely springback during plastic deformation is taken into account by an elastic recovery, so that the calibration can be carried out very precisely. This makes it possible to calibrate profile blanks accordingly, so that only very small compensation tolerances occur when they are subsequently joined with other components.
- a flat or plate-shaped profile blank is used as the profile blank, in particular with at least two different surface sections of opposite surfaces that define different wall thicknesses.
- a profile blank can be plastically deformed in a simple manner in the main and secondary direction or in the transverse and vertical direction using the method according to the invention, with the aforementioned springback being able to occur.
- the springback such a profile blank can be calibrated very precisely, so that simple subsequent and precisely fitting joining with other components is made possible. Profiles produced in this way can be used, for example, as flange plates for bumper systems in a motor vehicle.
- a hollow chamber profile with at least one hollow chamber is used as the profile blank.
- the at least one hollow chamber of such a profile blank contains several elements, in particular but not necessarily plate-shaped, which are plastically deformed according to the method described above, which enables calibration of the entire at least one hollow chamber of the profile blank and thus the profile blank itself.
- hollow chambers of profile blanks or such profile blanks can be calibrated very precisely in a simple manner, without the need for expensive and complex tools for expanding the hollow chamber or without using cutting methods for calibrating have to.
- a floating mandrel is used as a tool inside the at least one hollow chamber, on which the walls of the individual plate-shaped elements of the hollow chamber come to rest during calibration or compression. This floating mandrel is worked very precisely, since it essentially reproduces or specifies the calibrated shape of the hollow chamber inside.
- a profile blank with at least one hollow chamber which has a polygonal, in particular square, profile cross-section.
- Such profiles are widely used in motor vehicle construction and their further processing is integrated into many processes in the manufacture of a motor vehicle.
- a pressing tool with at least one in particular solid or hollow inner tool, in particular in the form of a floating mandrel, is used as the pressing tool, which is preferably at least 50 mm before compression is inserted into the end area of the at least one hollow chamber of the profile blank.
- the end regions of the hollow chamber provided for the subsequent joining with further components are calibrated accordingly.
- a calibration of other areas of the hollow chamber is not necessary for joining and can therefore be omitted. This provides a particularly advantageous method, both economically and ecologically, since calibration only takes place in the areas of the hollow chamber that are necessary for this and no complex tools are required for this either.
- both the height and the width of the end area of the hollow chamber profile blank decrease by at least 0.2%, in particular between 0.3% and 5%, during the calibration or during the plastic deformation.
- the profile blank can be produced in a simple manner with appropriate tolerances and can be adjusted to the necessary dimensions for subsequent joining with other components in the calibration process.
- the springback can also be taken into account in a simple manner as a material property, so that a very precise production of the profile blank and a very precise calibration of the same is made possible.
- the wall thickness of the hollow chamber is retained during the calibration. Thereby the wall thicknesses of the hollow chamber are identical for both the profile blank and the calibrated profile.
- a profile that is produced from at least one profile blank that is flat or plate-shaped is also protected. It is also possible that several profile blanks calibrated according to the invention are assembled or joined to form a final profile. For example, only welded aluminum strip material is referred to here, which was previously calibrated according to the invention as individual profile blanks.
- a hollow chamber profile with at least one open end area is also protected, the hollow chamber profile having at least a hollow chamber extending over at least a part of its entire length.
- a plate-shaped element 3 which consists of an aluminum alloy as a profile blank 101 and was produced in an extrusion process and essentially consists of a solid wall 2 .
- the plate-shaped element 3 of the profile blank 1 has a longitudinal extension, a vertical extension and a transverse extension.
- the profile blank 1 is cuboid and has surfaces 8, 9 and 12, 13 which extend along the longitudinal extension of the cuboid, plate-shaped element 3 of the profile blank 1 in its longitudinal extension.
- the profile blank 101 can also have at least two surface sections of different wall thicknesses in cross section; this is particularly easy through extrusion, even with relatively large jumps in thickness and also in the smallest of spaces, respectively. can be implemented with a small cross-section width.
- a pressing tool 5 according to the invention is now shown, which has a cavity 4 for inserting the profile blank 1 and has a lower punch 14 , an upper punch 15 and a left punch 16 and a right punch 17 .
- the stamps 14 to 17 have surfaces 6, 7 and 10, 11 which come into contact with the surfaces 9, 8 and 12, 13 of the profile blank 1 designed as a plate-shaped element 3 or solid wall 2 in the calibration process described below.
- FIG 3 a process step of the method according to the invention is shown, after which the profile blank 1 according to figure 1 in the cavity 4 of the pressing tool 5 according to figure 2 was inserted.
- the surface 7 of the upper punch 15 and the surface 6 of the lower punch 14 of the pressing tool 5 come to rest on the surfaces 9 and 8 of the profile blank 1 respectively.
- the surface 10 of the left stamp 16 and the surface 11 of the right stamp 17 are not yet in contact with the surfaces 12 or 13 of the profile blank 1 designed as a plate-shaped element 3. Rather, there is still a gap between these surfaces.
- the upper punch 15 and the lower punch 14 of the pressing tool 5 have now already moved towards one another, with the profile blank 1 designed as a plate-shaped element 3 or solid wall 2 having already been deformed in its vertical direction and also bending into the free spaces between the walls 10 and 11 of the left and right punches 16, 17 and the walls 12, 13 of the profile blank.
- the left-hand punch 16 and the right-hand punch 17 of the pressing tool 5 are now moved against one another in such a way that the profile blank 1 is now plastically deformed in its transverse extension, eliminating the previously produced bending.
- the profile blank 1 now arranged in the pressing tool 5 is shown in accordance with FIG figure 5 overcalibrated. After the pressing tool 5 has been opened and the overcalibrated profile blank 1 has been removed, this overcalibration is compensated for by the springback inherent in the material, which occurs during compression and plastic deformation. so that the profile blank 1 is then finally calibrated to the desired profile. The profile, which has now been finally calibrated in this way, can now be sent on for further processing.
- the profile blank 101 is in this case designed as a two-chamber hollow profile with hollow chambers 120 and 121 arranged one above the other, which are separated from one another by a partition 122 .
- the two-chamber hollow profile of the profile blank 101 has a lower surface 108 and an upper surface 109 and a left surface 112 and a right surface 113 . These surfaces 108, 109, 112 and 113 each belong to a flat element 103 designed as a solid wall 102.
- a pressing tool 105 according to the invention is now shown, with which a profile blank 1 designed as a two-chamber hollow profile according to FIG figure 6 can be calibrated.
- all elements are shown with the exception of the floating mandrels provided for the hollow chambers 120 and 121 .
- the upper punch 115 and the lower punch 114 can be moved in relation to one another, for example via a hydraulic system (not shown here).
- the left-hand punch 116 and the right-hand punch 117 are slightly wedge-shaped in the present case, so that a drive element 123 with legs 124 and 125, which are also wedge-shaped, can be moved against one another with support on supporting elements 126 and 127.
- the profile blank 101 according to FIG figure 6 inserted for calibration.
- the stamps 114 to 117 again have surfaces 106, 107, 110 and 111 which come into contact with the surfaces 108, 109 and 112 and 113 of the profile blank 101 during calibration.
- the profile blank 101 inserted into the cavity 104 of the pressing tool 105 is now shown.
- the pressing tool 105 is still in its open position, the previously mentioned floating mandrels 118 and 119 already being inserted into the hollow chambers 120 and 121 .
- These floating mandrels 118 and 119 are designed as solid inner tools and have an outer contour that corresponds to the inner contour of the hollow chambers 120 and 121 to be calibrated in the profile finally produced from the calibrated profile blank 101 .
- the surface 108 of the profile blank 101 is already in Contact with surface 110 of lower punch 114. Between the other surfaces 112, 113 and 109 of profile blank 101 there is still a gap to surfaces 110, 111 and 107 of punches 115, 116 and 117.
- the upper punch 115 is moved against the lower punch 114 of the pressing tool 105 .
- the surface 107 of the upper punch 115 now comes to rest on the surface 109 of the profile blank 101 and as the punches 115 and 114 continue to move towards one another, the walls of the profile blank 101 having the surfaces 112 and 113 are compressed, with these walls being deformed as well as experience a bend.
- the compression takes place in such a way that the floating mandrels 118 and 119 now abut against the walls of the profile blank 101 having the surfaces 106 and 107 and come to rest there, while the profile blank 101 is further plastically deformed.
- figure 11 now shows a third embodiment of a profile blank that is to be calibrated with the method according to the invention.
- the profile blank 201 of figure 11 It is a multi-chamber profile which is very complex with six different hollow chambers 220, 221, 228, 229, 230, 231.
- the individual hollow chambers are included separated from each other by partitions 221, 232, 233, 234, 235.
- the multi-chamber hollow profile of the profile blank 201 has a lower surface 208 and an upper surface 209 and a left surface 212 and a right surface 213 . These surfaces 208, 209, 212 and 213 each belong to a flat element 203 designed as a solid wall 202.
- a calibration with the common internal high-pressure methods would be difficult due to the complex tool design. However, a simple calibration can be achieved with the calibration method according to the invention.
- the pressing tool 205 with which the profile blank 201 of figure 11 being calibrated is essentially in the figure 12 shown, with the profile blank 201 already being inserted into the cavity 204 of the pressing tool 205 .
- the structure of the pressing tool 205 essentially corresponds to that of the pressing tool 105 of FIG Figures 7 to 10 , Only the upper punch 215 and the left and right punches 216 and 217 being adapted to the geometry of the profile blank 201 and the punch 215, respectively.
- the six cavities 220, 221, 228, 229, 230, 231 of the profile blank 201 used here six different floating mandrels 218, 219, 236, 237, 238 and 239 are used, which are placed in these cavities 220, 221 , 228, 229, 230, 231 are inserted.
- a detailed representation of the profile blank 201 inserted into the pressing tool 205 is shown in figure 13 shown.
- the upper punch 215 is moved against the lower punch 214 of the pressing tool 205 .
- the surfaces 207 of the upper punch 215 now come to rest on the surface 209 of the profile blank 201 and as the punches 215 and 214 continue to move towards one another, the walls of the profile blank 201 having the surfaces 212 and 213 are compressed, with these walls being both plastically deformed will experience a bend as well.
- the compression takes place in such a way that the floating mandrels 218, 219, 236, 237, 238 and 239 now abut against the walls of the profile blank 201 having the surfaces 208 and 209 and come to rest there, while the profile blank 201 is further plastically deformed.
Abstract
Die Erfindung betrifft ein Verfahren zum Kalibrieren eines metallischen Profilrohlings (1; 101; 201) mit wenigstens einer massiven Wand (2; 102; 202) mit folgenden Verfahrensschritten:a) Bereitstellen eines metallischen Profilrohlings (1; 101; 201) mit wenigstens einem Element (3; 103; 203) mit einer Längserstreckung, einer Quererstreckung und einer Hocherstreckung,b) Einlegen wenigstens eines Endbereichs des Elementes des Profilrohlings (1; 101; 201) in eine Kavität (4; 104; 204) eines offenen Presswerkzeugs (5; 105; 205),c) Schließen des Presswerkzeugs (5; 105; 205) derart, dass Flächen (6, 7; 106, 107; 206, 207) des Presswerkzeugs (5; 105; 205) in einer zur Längserstreckung des Profilrohlings (1; 101; 201) senkrecht stehenden Hauptschließrichtung verfahren werden, bis sie an einem Paar in einem Abstand einander gegenüberliegenden Flächen (8, 9; 108, 109; 208, 209) des wenigstens einen Endbereichs des Elementes (3; 103; 203) des zu kalibrierenden Profilrohlings (1; 101; 201) zum Liegen kommen,d) weiteres Schließen des Presswerkzeugs (5; 105; 205) in der Hauptrichtung, wobei durch Kompression eine Verformung im wenigstens einen Endbereich des Elementes (3; 103; 203) des Profilsrohling (1; 101; 201) und eine Biegung des Elementes des Profilrohlings (1; 101; 201) erfolgt,e) Schließen des Presswerkzeugs (5; 105; 205) in einer zur Hauptrichtung und zur Längserstreckung des Profilrohlings (1; 101; 201) senkrecht stehenden Nebenrichtung bis Flächen (10, 11; 110, 111; 210, 211) des Presswerkzeugs an Flächen (12, 13; 112, 113; 212, 213) des wenigstens einen Endbereichs des Elementes (3; 103; 203) des zu kalibrierenden Profilrohlings (1; 101; 201) zum Liegen kommen,f) weiteres Schließen des Presswerkzeugs (5; 105; 205) in der Nebenrichtung, wobei eine durch Kompression erzeugte plastische Verformung des Profilrohlings (1; 101; 201) in Haupt- beziehungsweise Nebenrichtung unter Reduzierung beziehungsweise Aufhebung der in Schritt d) erzeugten Biegung erfolgt,g) Öffnen des Presswerkzeugs (5; 105; 205),h) Entnahme des nunmehr zum abschließenden Profil kalibrierten Profilrohlings (1; 101; 201).The invention relates to a method for calibrating a metallic profile blank (1; 101; 201) with at least one solid wall (2; 102; 202) with the following method steps: a) providing a metallic profile blank (1; 101; 201) with at least one element (3; 103; 203) with a longitudinal extension, a transverse extension and a vertical extension,b) inserting at least one end area of the element of the profile blank (1; 101; 201) into a cavity (4; 104; 204) of an open pressing tool (5; 105; 205), c) closing the pressing tool (5; 105; 205) in such a way that surfaces (6, 7; 106, 107; 206, 207) of the pressing tool (5; 105; 205) in a direction relative to the longitudinal extent of the profile blank ( 1; 101; 201) in the vertical main closing direction until they contact a pair of mutually spaced opposite surfaces (8, 9; 108, 109; 208, 209) of the at least one end region of the element (3; 103; 203) of the to be calibrated profile blank (1; 101; 201) for lying en come,d) further closing of the pressing tool (5; 105; 205) in the main direction, compression causing deformation in at least one end area of the element (3; 103; 203) of the profile blank (1; 101; 201) and bending of the element of the profile blank (1; 101; 201),e ) Closing the pressing tool (5; 105; 205) in a secondary direction perpendicular to the main direction and to the longitudinal extension of the profile blank (1; 101; 201) up to surfaces (10, 11; 110, 111; 210, 211) of the pressing tool on surfaces ( 12, 13; 112, 113; 212, 213) of the at least one end area of the element (3; 103; 203) of the profile blank (1; 101; 201) to be calibrated come to rest, f) further closing of the pressing tool (5; 105 ; 205) in the secondary direction, with plastic deformation of the profile blank (1; 101; 201) produced by compression taking place in the main or secondary direction with reduction or cancellation of the bending produced in step d),g) opening of the pressing tool (5; 105 ; 205), h) removal of the now leaving profile calibrated profile blank (1; 101; 201).
Description
Die Erfindung betrifft ein Verfahren zum Kalibrieren eines metallischen Profilrohlings mit wenigstens einer massiven Wand. Ferner betrifft die Erfindung ein nach dem erfindungsgemäßen Verfahren hergestelltes Profil, insbesondere ein Hohlkammerprofil. Abschließend betrifft die Erfindung weiter ein Presswerkzeug zur Kalibrierung eines erfindungsgemäßen Profilrohlings mit einem erfindungsgemäßen Verfahren.The invention relates to a method for calibrating a metallic profile blank with at least one solid wall. Furthermore, the invention relates to a profile produced according to the method according to the invention, in particular a hollow chamber profile. Finally, the invention further relates to a pressing tool for calibrating a profile blank according to the invention with a method according to the invention.
Im Automobil- und Kraftfahrzeugbau werden heute für viele Anwendungen Profile, insbesondere auch Hohlkammerprofile aus Aluminium- oder Stahllegierungen als Material für Böden und Wände verwendete, die miteinander gefügt werden müssen. Dabei kann beispielsweise ein Innenraum zur Aufnahme von Batterien oder dergleichen mehr bereitgestellt werden. Der Innenraum wird dabei durch einen Deckel und eine Dichtung fluiddicht verschlossen. Auch der Boden und die Wände aus je einem oder mehreren Profilen sind fluiddicht miteinander gefügt, beispielsweise durch Reibrührschweißen oder Kaltpressfügen.In automobile and motor vehicle construction, profiles, in particular also hollow chamber profiles made of aluminum or steel alloys, are used as material for floors and walls for many applications, which have to be joined together. In this case, for example, an interior space for accommodating batteries or the like can be provided. The interior is sealed fluid-tight by a cover and a seal. The bottom and the walls, each consisting of one or more profiles, are also joined together in a fluid-tight manner, for example by friction stir welding or cold press joining.
Aufgrund der großen Abmessungen der Behälter von teilweise mehreren Quadratmetern ergibt sich bei der Fertigung von Profilen für derartige Anwendungen die Herausforderung, dass Herstelltoleranzen der Profile, insbesondere Wanddicken, Außenabmessungen und dergleichen, aus einem Strangpressprozess beziehungsweise Extrusionsprozess oder im Falle von Stahlmaterialien auch aus dem Rollformprozess relativ groß sind, sodass eine Kopplung der Einzelteile miteinander beziehungsweise deren Fügen erschwert ist. Dadurch werden durch zeit- und kostenintensive, spanende Bearbeitung der Fügebereiche, insbesondere bei als Hohlkammerprofilen ausgebildeten Rahmenprofile, die großen Toleranzen reduziert beziehungsweise kompensiert. Dabei birgt das erforderliche Aufmaß der Profile auch ein höheres Gesamtgewicht, da die Wandstärke, höher als für die Betriebsfestigkeit notwendig, gewählt werden muss. Dies ist sowohl ökonomisch als auch ökologisch fragwürdig. Alternativ ist es auch bekannt, dass die Profile insbesondere vor dem Fügen in einer Spannvorrichtung zueinander ausgerichtet und die Fügelage positioniert und so dann gefügt werden. Nachteilig ist dabei aber das Einbringen von hohen Eigenspannungen, die sich nachteilig auf Haltbarkeit und Crasheigenschaften der so hergestellten Teile, beispielsweise eines Batteriebehälters, auswirken können.Due to the large dimensions of the containers, sometimes several square meters, when manufacturing profiles for such applications, the challenge arises that manufacturing tolerances of the profiles, in particular wall thicknesses, external dimensions and the like, from an extrusion process or extrusion process or, in the case of steel materials, from the roll forming process are large, so that it is difficult to couple the individual parts to one another or to join them. As a result, the large tolerances are reduced or compensated for by time-consuming and cost-intensive machining of the joining areas, in particular in the case of frame profiles designed as hollow chamber profiles. The necessary oversize of the profiles also involves a higher overall weight, since the wall thickness selected has to be higher than necessary for operational strength. This is both economically and ecologically questionable. Alternatively, it is also known that the profiles are aligned with one another in a clamping device, in particular before joining, and the joining layer is positioned and then joined in this way. The disadvantage here, however, is the introduction of high internal stresses, which can have an adverse effect on the durability and crash properties of the parts produced in this way, for example a battery container.
Vielfach müssen auch Toleranzausgleichselemente an derartigen miteinander zu fügenden Profilen angeordnet werden, um die wenig maßhaltig gefügten Profile beispielsweise mit Innenquerwänden oder Innenlängswänden zu verbinden.In many cases, tolerance compensation elements must also be arranged on such profiles that are to be joined together in order to connect the profiles that are joined with little dimensional accuracy, for example, to internal transverse walls or internal longitudinal walls.
Aus der
Ein ähnliches Verfahren wird in der
Es ist daher Aufgabe der Erfindung, ein Verfahren zum Kalibrieren eines metallischen Profilrohlings mit wenigstens einer massiven Wand zur Verfügung zu stellen, bei dem keine Kosten und verfahrensmäßig aufwendigen Werkzeuge zur Kalibrierung hergestellt werden müssen, wobei sowohl plattenförmige Profilrohlinge als auch Hohlkammerprofilrohlinge kalibriert werden können. Ferner ist es Aufgabe der Erfindung, entsprechende Profile und ein entsprechendes Werkzeug zur Verfügung zu stellen.It is therefore the object of the invention to provide a method for calibrating a metallic profile blank with at least one solid wall, in which no costs and process-wise complex tools have to be produced for the calibration, with both plate-shaped profile blanks and hollow chamber profile blanks being able to be calibrated. Furthermore, it is the object of the invention to provide corresponding profiles and a corresponding tool.
Hinsichtlich des Verfahrens wird diese Aufgabe gelöst durch ein Verfahren zum Kalibrieren eines metallischen Profilrohlings mit wenigstens einer massiven Wand mit allen Verfahrensschritten des Patentanspruchs 1. Vorteilhafte Ausgestaltungen des Verfahrens finden sich in den Unteransprüchen 2 bis 9. Hinsichtlich des Profils wird die Aufgabe gelöst durch ein Profil mit allen Merkmalen der Patentansprüche 10 und 11. Hinsichtlich des Werkzeugs wir die Aufgabe gelöst durch ein Presswerkzeug zur Kalibrierung eines Profilrohlings mit allen Merkmalen des Patentanspruchs 12.With regard to the method, this object is achieved by a method for calibrating a metal profile blank with at least one solid wall with all the method steps of
Das erfindungsgemäße Verfahren zum Kalibrieren eines extrudierten metallischen Profilrohlings mit wenigstens einer massiven Wand zeichnet sich durch folgende Verfahrensschritte aus:
- a) Bereitstellen eines metallischen Profilrohlings mit wenigstens einem insbesondere plattenförmigen - Element mit einer Längserstreckung, einer Quererstreckung und einer Hocherstreckung
- b) Einlegen wenigstens eines Endbereichs des Elementes des Profilrohlings in eine Kavität eines offenen Presswerkzeugs,
- c) Schließen des Presswerkzeugs derart, dass Flächen des Presswerkzeugs in einer zur Längserstreckung des Profilrohlings senkrecht stehenden Hauptschließrichtung verfahren werden, bis sie an einem Paar in einem Abstand einander gegenüberliegenden Flächen des wenigstens einen Endbereichs des Elementes des zu kalibrierenden Profilrohlings zum Liegen kommen,
- d) weiteres Schließen des Presswerkzeugs in der Hauptrichtung, wobei durch Kompression eine Verformung im wenigstens einen Endbereich des Elementes des Profilsrohling und eine Biegung des plattenförmigen Elementes des Profilrohlings erfolgt,
- e) Schließen des Presswerkzeugs in einer zur Hauptrichtung und zur Längserstreckung des Profilrohlings senkrecht stehenden Nebenrichtung bis Flächen des Presswerkzeugs an sich Flächen des wenigstens einen Endbereichs des Elementes des zu kalibrierenden Profilrohlings zum Liegen kommen,
- f) weiteres Schließen des Presswerkzeugs in der Nebenrichtung, wobei eine durch Kompression erzeugte plastische Verformung des Profilrohlings in Haupt- beziehungsweise Nebenrichtung unter Reduzierung beziehungsweise Aufhebung der in Schritt d) erzeugten Biegung erfolgt,
- g) Öffnen des Presswerkzeugs,
- h) Entnahme des nunmehr zum abschließenden Profil kalibrierten Profilrohlings.
- a) Provision of a metallic profile blank with at least one element, in particular plate-shaped, with a longitudinal extension, a transverse extension and a vertical extension
- b) inserting at least one end area of the element of the profile blank into a cavity of an open pressing tool,
- c) Closing the pressing tool in such a way that surfaces of the pressing tool are moved in a main closing direction perpendicular to the longitudinal extension of the profile blank until they come to rest on a pair of spaced opposite surfaces of the at least one end region of the element of the profile blank to be calibrated,
- d) further closing of the pressing tool in the main direction, with compression causing deformation in at least one end region of the element of the profile blank and bending of the plate-shaped element of the profile blank,
- e) Closing the pressing tool in a secondary direction perpendicular to the main direction and to the longitudinal extension of the profile blank until surfaces of the pressing tool come to rest on surfaces of at least one end region of the element of the profile blank to be calibrated,
- f) further closing of the pressing tool in the secondary direction, with plastic deformation of the profile blank produced by compression taking place in the main or secondary direction with reduction or elimination of the bending produced in step d),
- g) opening the pressing tool,
- h) Removal of the profile blank, which has now been calibrated to form the final profile.
Anzumerken ist hierbei, dass die chronologische Abfolge der einzelnen Verfahrensschritte a) bis h) zwar eine besonders vorteilhafte Ausgestaltung der Erfindung darstellt. Allerdings ist die Erfindung nicht darauf beschränkt. Vielmehr ist es beispielsweise auch möglich, erfindungsgemäß die Verfahrensschritte c) und e) oder auch d) und f) gleichzeitig stattfinden zu lassen.It should be noted here that the chronological sequence of the individual method steps a) to h) represents a particularly advantageous embodiment of the invention. However, the invention is not limited to this. Rather, it is also possible, for example, to allow process steps c) and e) or also d) and f) to take place simultaneously according to the invention.
Durch das erfindungsgemäße Verfahren ist es in einfacher Weise möglich, unterschiedlichste extrudierte metallische Profilrohlinge insbesondere in ihren Endbereichen zu kalibrieren, um Verbindungstoleranzen auszugleichen und ein Fügen mit der abschließend kalibrierten Profile mit anderen Bauteilen zu ermöglichen.The method according to the invention makes it possible in a simple manner to calibrate a wide variety of extruded metallic profile blanks, in particular in their end regions, in order to compensate for connection tolerances and to enable the finally calibrated profile to be joined to other components.
Der Profilrohling weist dabei wenigstens ein insbesondere aber nicht notwendigerweise plattenförmiges - Element mit einer Längserstreckung, einer Quererstreckung und einer Hocherstreckung auf. Durch plastisches Verformen des Elementes sowohl in Haupt- als auch in Nebenrichtung wird das Element entsprechend kalibriert, wobei es auch zu einer Ausdehnung des plattenförmigen Elementes in Längsrichtung kann, welche aber bei der Herstellung des Profilrohlings bereits berücksichtigt werden kann. Wesentlich hierbei ist, dass das Element in Haupt- und Nebenrichtung komprimiert und plastisch verformt wird, wobei es in der Nebenrichtung gleichzeitig eine Biegung erfährt. Diese Biegung wird durch abschließendes Komprimieren beziehungsweise plastische Verformen wieder entfernt. Nachdem der Profilrohling entsprechend vorgenannten Ausführungen zum abschließenden Profil kalibriert wurde, wird das Presswerkzeug geöffnet und das Profil aus dem Presswerkzeug entnommen.The profile blank has at least one element which is in particular but not necessarily plate-shaped and has a longitudinal extension, a transverse extension and a vertical extension. By plastically deforming the element both in the main and in the secondary direction, the element is calibrated accordingly, which can also lead to an expansion of the plate-shaped element in the longitudinal direction, but this can already be taken into account during the production of the profile blank. It is essential here that the element is compressed and plastically deformed in the main and secondary directions, while at the same time undergoing bending in the secondary direction. This bending is removed again by final compression or plastic deformation. After the profile blank has been calibrated to the final profile in accordance with the aforementioned statements, the pressing tool is opened and the profile is removed from the pressing tool.
Grundsätzlich vorteilhaft bei der Erfindung ist es, dass die Profilrohlinge mit minimalem Gewicht hergestellt werden können, da zum Kalibrieren keinerlei spanende Bearbeitungsschritte notwendig sind.It is fundamentally advantageous in the invention that the profile blanks can be produced with minimal weight, since no machining steps are required for calibration.
Nach einer ersten vorteilhaften Ausgestaltung der Erfindung ist es vorgesehen, dass ein Profilrohling aus einer extrudierten Aluminiumlegierung verwendet wird. Derartige Materialien haben sich im Fahrzeugbau aufgrund des leichten Gewichtes und der damit einhergehenden energetischen Vorteile während des Betriebs des Kraftfahrzeugs als vorteilhaft erwiesen.According to a first advantageous embodiment of the invention, it is provided that a profile blank made of an extruded aluminum alloy is used. Such materials have proven to be advantageous in vehicle construction due to their light weight and the energy advantages associated therewith during operation of the motor vehicle.
Damit während des plastischen Verformens beziehungsweise des Kalibrierens des Profilrohlings innerhalb des Presswerkzeuges kein Abrieb am Profilrohling und am Presswerkzeug auftritt beziehungsweise ein solcher Abrieb minimiert wird, ist es nach einer besonders vorteilhaften Ausgestaltung der Erfindung vorgesehen, dass zwischen den sich während des Komprimierens beziehungsweise plastischen Verformens berührenden Kontaktflächen des Presswerkzeugs und des Profilrohlings ein Schmiermittel aufgebracht ist. Hierdurch wird ein durch Reibung verursachter Abrieb vermieden beziehungsweise wesentlich minimiert. Als Schmiermittel kann dabei sowohl ein separates Schmiermittel, welches vor dem Kalibrieren auf den Profilrohling aufgebracht wird, als auch eine auf Kontaktflächen des Profilwerkzeugs aufgebrachte Beschichtung verwendet werden.So that no abrasion occurs on the profile blank and on the pressing tool during the plastic deformation or the calibration of the profile blank within the pressing tool or such abrasion is minimized, it is provided according to a particularly advantageous embodiment of the invention that between the during compression or plastic deformation touching Contact surfaces of the pressing tool and the profile blank, a lubricant is applied. As a result, abrasion caused by friction is avoided or significantly minimized. As a lubricant Both a separate lubricant, which is applied to the profile blank before calibration, and a coating applied to the contact surfaces of the profile tool are used.
Nach einer anderen vorteilhaften Ausgestaltung der Erfindung ist es vorgesehen, dass während des plastischen Verformens des wenigstens einen plattenförmigen Elementes eine Überkalibrierung erfolgt, die eine elastische Rückfederung des Elementes kompensiert. Hierdurch wird die den jeweiligen Profilrohlingen innewohnende Materialeigenschaft der Rückfederung beim plastischen Verformen durch eine elastische Rückverformung Rechnung getragen, sodass die Kalibrierung sehr genau erfolgen kann. Hierdurch ist es möglich, Profilrohlinge entsprechend zu kalibrieren, sodass beim nachfolgenden Fügen mit weiteren Bauteilen nur sehr geringe Ausgleichstoleranzen auftreten.According to another advantageous embodiment of the invention, provision is made for overcalibration to take place during the plastic deformation of the at least one plate-shaped element, which compensates for elastic springback of the element. In this way, the inherent material property of the respective profile blanks, namely springback during plastic deformation, is taken into account by an elastic recovery, so that the calibration can be carried out very precisely. This makes it possible to calibrate profile blanks accordingly, so that only very small compensation tolerances occur when they are subsequently joined with other components.
Nach einem weiteren Gedanken der Erfindung ist es vorgesehen, dass als Profilrohling ein flacher beziehungsweise plattenförmiger Profilrohling verwendet wird, insbesondere mit wenigstens zwei verschiedenen Flächenabschnitten gegenüberliegender Flächen, die verschiedene Wanddicken definieren. Ein derartiger Profilrohling kann nach dem erfindungsgemäßen Verfahren in einfacher Weise in Haupt- und Nebenrichtung beziehungsweise in Quer- und Hochrichtung plastisch verformt werden, wobei eine vorgenannte Rückfederung auftreten kann. Unter Berücksichtigung der Rückfederung kann ein derartiger Profilrohling sehr exakt kalibriert werden, sodass ein einfaches nachfolgendes und passgenaues Fügen mit weiteren Bauteilen ermöglicht ist. Derartig hergestellte Profile können beispielsweise als Flanschplatten für Stoßfängersysteme eines Kraftfahrzeugs verwendet werden.According to a further idea of the invention, it is provided that a flat or plate-shaped profile blank is used as the profile blank, in particular with at least two different surface sections of opposite surfaces that define different wall thicknesses. Such a profile blank can be plastically deformed in a simple manner in the main and secondary direction or in the transverse and vertical direction using the method according to the invention, with the aforementioned springback being able to occur. Taking into account the springback, such a profile blank can be calibrated very precisely, so that simple subsequent and precisely fitting joining with other components is made possible. Profiles produced in this way can be used, for example, as flange plates for bumper systems in a motor vehicle.
Nach einem anderen Gedanken der Erfindung ist es vorgesehen, dass als Profilrohling ein Hohlkammerprofil mit wenigstens einer Hohlkammer verwendet wird. Die wenigstens eine Hohlkammer eines derartigen Profilrohlings enthält dabei mehrere insbesondere aber nicht notwendigerweise plattenförmige - Elemente, die nach dem zuvor beschriebenen Verfahren plastisch verformt werden, wodurch eine Kalibrierung der gesamten wenigstens einen Hohlkammer des Profilerohlings und somit des Profilrohlings selbst ermöglicht ist. Hierdurch können Hohlkammern von Profilrohlingen beziehungsweise solche Profilrohlinge in einfacher Weise sehr exakt kalibriert werden, ohne dass aufwendige und komplexe Werkzeuge zum Aufweiten der Hohlkammer notwendig sind oder dass spanende Verfahren zum Kalibrieren eingesetzt werden müssen. Vorteilhafterweise wird dabei als Werkzeug im Inneren der wenigstens einen Hohlkammer ein schwimmender Dorn verwendet, an welchem die Wände der einzelnen plattenförmigen Elemente der Hohlkammer beim Kalibrieren beziehungsweise Komprimieren zum Liegen kommen. Dieser schwimmende Dorn ist dabei sehr exakt gearbeitet, da er im Wesentlichen die kalibrierte Form der Hohlkammer in ihrem Inneren wieder- beziehungsweise vorgibt.According to another idea of the invention, it is provided that a hollow chamber profile with at least one hollow chamber is used as the profile blank. The at least one hollow chamber of such a profile blank contains several elements, in particular but not necessarily plate-shaped, which are plastically deformed according to the method described above, which enables calibration of the entire at least one hollow chamber of the profile blank and thus the profile blank itself. As a result, hollow chambers of profile blanks or such profile blanks can be calibrated very precisely in a simple manner, without the need for expensive and complex tools for expanding the hollow chamber or without using cutting methods for calibrating have to. Advantageously, a floating mandrel is used as a tool inside the at least one hollow chamber, on which the walls of the individual plate-shaped elements of the hollow chamber come to rest during calibration or compression. This floating mandrel is worked very precisely, since it essentially reproduces or specifies the calibrated shape of the hollow chamber inside.
Besonders vorteilhaft ist es, wenn ein Profilrohling mit wenigstens einer Hohlkammer verwendet wird, welche einen mehreckigen, insbesondere viereckigen Profilquerschnitt aufweist. Derartige Profile finden im Kraftfahrzeugbau vielfach Anwendung und deren weitere Verarbeitung ist in viele Prozesse bei der Herstellung eines Kraftfahrzeugs integriert.It is particularly advantageous if a profile blank with at least one hollow chamber is used, which has a polygonal, in particular square, profile cross-section. Such profiles are widely used in motor vehicle construction and their further processing is integrated into many processes in the manufacture of a motor vehicle.
Bei der Verwendung von Profilrohlingen mit wenigstens einer Hohlkammer hat es sich als vorteilhaft erwiesen, dass als Presswerkzeug ein Presswerkzeug mir wenigstens einem insbesondere massiven oder auch hohlen - Innenwerkzeug, insbesondere in Form eines schwimmenden Dorns, verwendet wird, welches vor der Komprimierung vorzugsweise mindestens 50 mm in den Endbereich der wenigstens einen Hohlkammer des Profilrohlings eingefügt wird. Hierdurch ist erreicht, dass die zum nachfolgenden Fügen mit weiteren Bauteilen vorgesehenen Endbereiche der Hohlkammer entsprechend kalibriert werden. Eine Kalibrierung anderer Bereiche der Hohlkammer ist zum Fügen nicht notwendig und kann daher unterbleiben. Hierdurch wird sowohl ökonomisch als auch ökologisch ein besonders vorteilhaftes Verfahren zur Verfügung gestellt, da eine Kalibrierung nur in den dafür notwendigen Bereichen der Hohlkammer stattfindet und auch keine komplexen Werkzeuge dafür benötigt werden.When using profile blanks with at least one hollow chamber, it has proven to be advantageous that a pressing tool with at least one in particular solid or hollow inner tool, in particular in the form of a floating mandrel, is used as the pressing tool, which is preferably at least 50 mm before compression is inserted into the end area of the at least one hollow chamber of the profile blank. The result of this is that the end regions of the hollow chamber provided for the subsequent joining with further components are calibrated accordingly. A calibration of other areas of the hollow chamber is not necessary for joining and can therefore be omitted. This provides a particularly advantageous method, both economically and ecologically, since calibration only takes place in the areas of the hollow chamber that are necessary for this and no complex tools are required for this either.
Weiterhin hat es sich als sinnvoller erwiesen, dass sowohl die Höhe als auch die Breite des Endbereichs des Hohlkammerprofilrohlings während der Kalibrierung beziehungsweise während der plastischen Verformung mindestens 0,2%, insbesondere zwischen 0,3% und 5 % abnimmt. Hierbei ist es besonders von Vorteil, dass der Profilrohling mit entsprechenden Toleranzen in einfacher Weise hergestellt werden kann und in dem Kalibrierungsverfahren auf die notwendigen Maße zum nachfolgenden Fügen mit weiteren Bauteilen eingestellt werden kann. Hierbei kann bei der Herstellung des Profilrohlings auch der Springback in einfacher Weise als Materialeigenschaft mitberücksichtigt werden, sodass ein sehr exaktes Herstellen des Profilrohlings und ein sehr exaktes Kalibrieren desselben ermöglicht ist. Dabei ist es besonders vorteilhaft, wenn während des Kalibrierens die Wandstärke der Hohlkammer erhalten bleibt. Dadurch sind die Wandstärken der Hohlkammer sowohl beim Profilrohling als auch beim kalibrierten Profil identisch.Furthermore, it has proven to be more sensible that both the height and the width of the end area of the hollow chamber profile blank decrease by at least 0.2%, in particular between 0.3% and 5%, during the calibration or during the plastic deformation. It is particularly advantageous here that the profile blank can be produced in a simple manner with appropriate tolerances and can be adjusted to the necessary dimensions for subsequent joining with other components in the calibration process. Here, when producing the profile blank, the springback can also be taken into account in a simple manner as a material property, so that a very precise production of the profile blank and a very precise calibration of the same is made possible. It is particularly advantageous if the wall thickness of the hollow chamber is retained during the calibration. Thereby the wall thicknesses of the hollow chamber are identical for both the profile blank and the calibrated profile.
Weiterhin geschützt ist ein Profil, welches aus wenigsten einem Profilrohling hervorgeht, welcher flach beziehungsweise plattenförmig ausgebildet ist. Dabei ist es auch möglich, dass mehrere erfindungsgemäß kalibrierte Profilrohlinge zu einem abschließenden Profil zusammengesetzt beziehungsweise zusammengefügt werden. Beispielsweise sei hier nur auf verschweißtes Aluminium-Bandmaterial verwiesen, welches zuvor als einzelne Profilrohlinge erfindungsgemäß kalibriert wurde.A profile that is produced from at least one profile blank that is flat or plate-shaped is also protected. It is also possible that several profile blanks calibrated according to the invention are assembled or joined to form a final profile. For example, only welded aluminum strip material is referred to here, which was previously calibrated according to the invention as individual profile blanks.
Ferner geschützt ist aber auch ein Hohlkammerprofil mit wenigstens einem offenen Endbereich, wobei das Hohlkammerprofil wenigstens sich über wenigstens einen Teil seiner gesamten Längsausdehnung erstreckende Hohlkammer aufweist.However, a hollow chamber profile with at least one open end area is also protected, the hollow chamber profile having at least a hollow chamber extending over at least a part of its entire length.
Abschließend soll auch ein Presswerkzeug zur Kalibrierung der vorgenannten Profilrohlinge nach einem der zuvor beschriebenen Verfahren geschützt sein.Finally, a pressing tool for calibrating the aforementioned profile blanks should also be protected using one of the methods described above.
Weitere Ziele, Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnungen. Dabei bilden alle beschriebenen und/oder bildlich dargestellten Merkmale für sich oder in beliebiger sinnvoller Kombination den Gegenstand der vorliegenden Erfindung, auch unabhängig von ihrer Zusammenfassung in den Ansprüchen oder deren Rückbeziehung.Further goals, advantages, features and possible applications of the present invention result from the following description of exemplary embodiments with reference to the drawings. All of the features described and/or illustrated form the subject matter of the present invention, either alone or in any meaningful combination, even independently of their summary in the claims or their back-reference.
Es zeigen:
- Figur 1:
- ein Ausführungsbeispiel eines ersten Profilrohlings zur Herstellung eines erfindungsgemäß kalibrierten Profils,
- Figur 2:
- ein erstes Ausführungsbeispiel eines erfindungsgemäßen Presswerkzeugs zum Kalibrieren des Profilrohlings gemäß
Figur 1 , - Figuren 3 bis 5:
- Darstellung einzelner Verfahrensschritte eines erfindungsgemäßen Verfahrens zum Kalibrieren des Profilrohlings gemäß
Figur 1 in dem Presswerkzeug gemäßFigur 2 , - Figur 6:
- ein zweites Ausführungsbeispiel eines Profilrohlings zur Herstellung eines erfindungsgemäß kalibrierten Profils,
- Figur 7:
- ein Ausführungsbeispiel eines erfindungsgemäßen Presswerkzeugs zur Kalibrierung des Profilrohlings gemäß
Figur 6 , Figuren 8 bis 10:- einzelnen Verfahrensschritte eines erfindungsgemäßen Verfahrens zur Kalibrierung eines Profilrohlings gemäß
Figur 6 mit einem Presswerkzeug gemäßFigur 7 , - Figur 11:
- ein drittes Ausführungsbeispiel eines Profilrohlings zur Herstellung eines erfindungsgemäß kalibrierten Profils,
- Figur 12:
- ein Ausführungsbeispiel eines erfindungsgemäßen Werkzeugs zum Kalibrieren eines Profilrohlings zu einem
Profil gemäß Figur 11 , Figuren 12 bis 17:- Darstellung einzelner Verfahrensschritte zum Kalibrieren eines Profilrohlings zu einem
Profil gemäß Figur 10 mit einem Presswerkzeug gemäß Figur 11, jeweils mit einer Detaildarstellung.
- Figure 1:
- an embodiment of a first profile blank for the production of a profile calibrated according to the invention,
- Figure 2:
- according to a first exemplary embodiment of a pressing tool according to the invention for calibrating the profile blank
figure 1 , - Figures 3 to 5:
- Representation of individual process steps of a method according to the invention for calibrating the profile blank according to FIG
figure 1 by doing pressing tool according tofigure 2 , - Figure 6:
- a second embodiment of a profile blank for the production of a profile calibrated according to the invention,
- Figure 7:
- an embodiment of a pressing tool according to the invention for calibrating the profile blank
figure 6 , - Figures 8 to 10:
- individual process steps of a method according to the invention for calibrating a profile blank
figure 6 with a pressing tool according tofigure 7 , - Figure 11:
- a third embodiment of a profile blank for the production of a profile calibrated according to the invention,
- Figure 12:
- an embodiment of a tool according to the invention for calibrating a profile blank to form a profile
figure 11 , - Figures 12 to 17:
- Representation of individual process steps for calibrating a profile blank to form a profile according to
figure 10 with a pressing tool according to FIG. 11, each with a detailed illustration.
In der
In der
In der
In dem nunmehr in
In einem weiteren Verfahrensschritt werden nunmehr der linke Stempel 16 und der rechte Stempel 17 des Presswerkzeugs 5 derart gegeneinander verfahren, dass der Profilrohling 1 nunmehr in seiner Quererstreckung unter Aufhebung der zuvor erzeugten Biegung plastisch verformt wird.In a further process step, the left-
Der nunmehr in dem Presswerkzeug 5 angeordnete Profilrohling 1 ist in der Darstellung gemäß
In der
In der
In der
Wie nunmehr in
In der
Das Presswerkzeug 205, mit dem der Profilrohling 201 der
Der Aufbau des Presswerkzeugs 205 entspricht im Wesentlichen dem des Presswerkzeugs 105 der
Wie nunmehr in
In den
Claims (12)
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DE102005020727A1 (en) * | 2005-05-04 | 2006-11-09 | Dr.Ing.H.C. F. Porsche Ag | Fluid flow pipe for heat exchanger has dividing wall between fluid flows which is non-planar to increase heat exchange |
DE102014004183A1 (en) | 2013-03-25 | 2014-09-25 | Audi Ag | Body longitudinal member and method for producing a body longitudinal member by means of a multi-chamber hollow profile |
CN109175014A (en) * | 2018-09-06 | 2019-01-11 | 童丹桂 | New energy purlin shaping device |
DE102018131967A1 (en) * | 2018-12-12 | 2020-06-18 | Benteler Automobiltechnik Gmbh | Method for calibrating a curved hollow metal profile |
CN110449490A (en) * | 2019-08-29 | 2019-11-15 | 安徽江淮汽车集团股份有限公司 | A kind of U-shaped beam shaping tooling and corresponding shaping methods |
Also Published As
Publication number | Publication date |
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CN114101397A (en) | 2022-03-01 |
US20220062965A1 (en) | 2022-03-03 |
DE102020122711A1 (en) | 2022-03-03 |
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