EP2532454A1 - Procédé et dispositif destinés à la fabrication de composants multicouches - Google Patents

Procédé et dispositif destinés à la fabrication de composants multicouches Download PDF

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Publication number
EP2532454A1
EP2532454A1 EP12001983A EP12001983A EP2532454A1 EP 2532454 A1 EP2532454 A1 EP 2532454A1 EP 12001983 A EP12001983 A EP 12001983A EP 12001983 A EP12001983 A EP 12001983A EP 2532454 A1 EP2532454 A1 EP 2532454A1
Authority
EP
European Patent Office
Prior art keywords
blanks
closed contour
tool
point
blank
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.)
Withdrawn
Application number
EP12001983A
Other languages
German (de)
English (en)
Inventor
Martin Niemann
Andreas Kemper
Ulrich Schreiber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Claas Selbstfahrende Erntemaschinen GmbH
Original Assignee
Claas Selbstfahrende Erntemaschinen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Claas Selbstfahrende Erntemaschinen GmbH filed Critical Claas Selbstfahrende Erntemaschinen GmbH
Publication of EP2532454A1 publication Critical patent/EP2532454A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/021—Deforming sheet bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
    • B21D47/02—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars by expanding

Definitions

  • the present invention relates to a method and an apparatus for manufacturing multi-layered, in particular clam shell components made of flat material, in particular of sheet metal.
  • the grain tank cover of a combine harvester such as in FIG DE 10 2007 003 653 A1 described a variety of large-sized wings, which must have a considerable flexural rigidity so as not to bend under the weight of grain lying thereon.
  • Conventionally used for the construction of such a Korntankdeckels sheets have a thickness of 1 to 2 mm and are additionally provided for stiffening with dotted or glued Hutprofilen. The high weight of these sheets causes high material costs in the production of Korntankdeckels.
  • the high weight of the grain tank cover increases the fuel consumption of a combine harvester equipped with it and that of its Insert resulting soil compaction. It would therefore be very desirable to be able to produce the wings of such a grain tank lid with the same load capacity with less material.
  • any other plate-shaped components of agricultural machinery such as body panels, the walls of grain tanks or the like.
  • a particularly great fuel economy can be achieved if it is possible to reduce the weight of plates moved within an agricultural machine, such as vibrating plates, which are used, for example, in a combine harvester for transporting crop material.
  • a hold-down may conveniently be placed prior to expansion to keep the width of the gap at that point less than around the point.
  • the width of the gap at the point during expansion is kept zero, i. the two blanks are held pressed against each other by the hold-down as well as by the closed contour.
  • subsequent attachment of the blanks to each other at the point, in particular by spot welding is not precluded even if during the flaring it is allowed for the blanks to slightly separate at the point.
  • a recess forms on at least one of the blanks around each blank holder, the size of the recess being proportional to the force generated during the expansion of the pressurized fluid to the respective blank holder is exercised.
  • the force acting on a single hold down should not be too great. Therefore, it is preferable that, when the blanks are attached to each other at a plurality of points of the closed contour, the areas of the recesses formed upon widening around each of these points are higher by a factor of 2, and even better by a factor of at most one , 25 different.
  • one of the blanks has an edge projecting beyond the closed contour, then it is expedient to turn over this protruding edge in order to form a groove extending around the edge of the other blank.
  • This turnover of the edge may be sufficient to secure the blanks together along the contour.
  • the folding occurs in addition to welding or bonding the blanks together along the contour.
  • Welding may be performed after folding to secure the other blank on both sides between the first blank and its folded edge; However, it is also conceivable to turn over the edge only after the welding or gluing in order to mask sweat marks.
  • the blanks can be placed between a first and a second tool and then the tools are moved towards each other to press the blanks together.
  • a first tool, on which one of the blanks is placed adjacent, is preferably flat at least along the closed contour and within it, so that the blank attached to it remains flat during the expansion and only the other blank facing the second tool is deformed.
  • the closed contour is preferably removably mounted to the second tool for preparation of the method described above.
  • the tools can be adapted in a short time for the production of different types of components. This allows a good utilization of the tools even when manufacturing numerous small series of components.
  • the hold-downs are preferably variably mounted on the second tool.
  • the first tool shown essentially comprises a rigid plate 1 with a flat working surface 2, on which a first blank 3 made of sheet metal, preferably of 0.4 to 0.5 mm thickness, is arranged for processing. If the first tool with upside down working surface 2, in the in Fig. 1 shown perspective, the blank 3 can rest loosely on the plate 1; otherwise, a temporary fixation of the blank 3 to the plate 1, for example by acting on its edge, in the figure Claws, not shown, by magnets, distributed over the working surface 2 suction nozzles or the like appropriate.
  • the blank 3 is shown here by way of example as a rectangle, but it is obvious that the blank 3 can have largely arbitrary shapes.
  • a compressed air outlet 4 is arranged on an edge of the working surface 2.
  • Fig. 2 shows the compressed air outlet 4 in an enlarged view.
  • a block-shaped main body 5 of the compressed air outlet is detachably attached to the working surface 2, for example by means of screws 6.
  • a compressed air hose 7 is connected to a side of the main body 5 facing the edge of the working surface 2, and a bore extends from the connection point of the hose 7 through the main body 5 to the tip of a tongue 8, whose flat underside 9 rests flat on the blank 3 and the top 10 has a gently wavy curved course.
  • a second sheet metal blank 11, of which in Fig. 2 According to a first embodiment of the invention, a fragment is substantially congruent with the blank 3.
  • the blank 11 Above the tongue 8, the blank 11 is provided with a slot 12 which, when the blanks 3, 11 are correctly placed on top of each other, at a crest line 13 of the top 10 of the tongue 8 comes to rest.
  • the slot 12 bifurcates at its inner end into two branches 14.
  • the branches 14 bound together a triangular projection 15 of the blank 11, the free tip on the crest line 13 to lie comes, and in each case together with the slot 12, two trapezoidal tabs 16 which are each bent upward along dotted lines 17 to receive the tongue 8 when the blank 11 is pressed against the tongue 8 and the blank 3.
  • a second tool which serves together with the plate 1 for compressing the blanks 3, 11, is in Fig. 3 in one too Fig. 1 shown analog perspective view.
  • the second tool also includes a solid steel plate 18 on which a plurality of elongate and angular webs 19, 21 and downers 22 are mounted.
  • angular clamps serve 23, of which in Fig. 3 for clarity, only a few are shown.
  • the clamping claws 23 each have a slot through which a screw 24 extends.
  • the screws 24 each engage in not visible in the figure threaded rods, which are slidably received in T-slots 25 of the plate 18.
  • the webs 19, 21 and hold-down 22 each have a T-shaped cross section, wherein a crossbar of the T is kept pressed by the clamps 23 against the plate 18 and a foot of the T protrudes from the plate 18. As can easily be seen, in this way the components 19, 21, 22 can be fixed in substantially arbitrary positions on the plate 18.
  • Fig. 3 In the presentation of the Fig. 3 are two elongated webs 19 and angular webs 21 mounted on the plate 18 so that their end faces touching each other and connect their facing away from the plate 18 apex surfaces 26 continuously to each other.
  • Two further elongate webs 19, 20 and an angular web 21 are each shown floating over their intended mounting positions.
  • the profile element 20 differs from the profile elements 19 only by a recess 27 in its apex surface 26, which is complementary to the top 10 of the tongue 8 is formed. It is easily conceivable that when these webs as well as four further elongate webs 19 and an angular web 21 are mounted along the track defined by dotted lines on the plate 18, their vertex surfaces 26 form a closed rectangular contour extending around the blank holders 22 ,
  • Fig. 4 shows a schematic cross section through the two blanks 3, 11, which are superimposed and clamped between the plate 1 and mounted on the plate 18 webs 19, 20, 21 and hold down 22.
  • the compressed air outlet 4 and to its tongue 8 complementary recess 27 of the web 20 are outside the cutting plane of the Fig. 4 in that one of the lugs 16 bent upwards on the tongue 8 is visible on the flank of the tongue 8.
  • the closed contour formed by the apex surfaces 26 of the webs 19, 20 21 holds the edges 28, 29 of the blanks 3, 11 pressed firmly and substantially airtight to each other. Accordingly, the hold-down members 22 cylindrical in axial cross-section hold the blanks 3, 11 pressed against each other at points 30.
  • Fig. 6 showed a plan view of the blank 11 after expansion.
  • the blank 11 has not been deflected and continues to touch the blank 3 there.
  • the blank 11 is located everywhere in between splayed from the blank 3.
  • Dotted lines 31 each indicate apex lines from which the surface of the blank 11 drops in opposite directions. These lines 31 divide the blank 11 into a zone 32 sloping towards the edge 28 and five recesses 33 surrounding the points 30.
  • the tensile load to which the blank 11 in the vicinity of each point 30 is subjected during expansion is proportional to the areal extent of the respective zone Point 30 surrounding recess 33.
  • the points 30 are placed so that the surfaces of the surrounding recesses 33 are substantially equal in size.
  • the two blanks 3, 11 are fastened to each other after deformation. In the simplest case, if the two blanks 3, 11 are exactly congruent, this can be done by attaching spot welds 34 at the points 30 as well as along the edges 28, 29.
  • Fig. 7 shows a partial cross section through the attached blanks 3, 11 according to a further development of the invention.
  • the edge length of the blank 11 is here slightly larger than that of the blank 3, so that the edge 29 protrudes slightly.
  • the protruding portion of the edge 29 can be bent hairpin-shaped as indicated by an arrow around the edge 28 of the blank 3 to clamp this form-fitting. Welding marks on the edge 28 can be obscured by this, which is particularly advantageous when the cut blank 3 is to form a visible side of the finished component.
  • the bending of the protruding edge 29 may even make a weld along the edges 28, 29 under certain circumstances superfluous.
  • the blank 3 may also have the larger edge length and an overhanging portion of its edge 28 may be bent to clamp the edge 29 of the deformed blank 3, as in FIG Fig. 8 shown.
  • Fig. 9 shows you one Fig. 5 analog section through the blanks 3, 11 inserted between the plates 1, 18 of the processing device according to this second development.
  • the plate 1 is provided with a flachbödigen recess 35 whose outline corresponds to the formed by the apex surfaces 26 of the webs 19, 20, 21 closed contour.
  • At the edges of the recess 35 on the surface 2 of the plate 1 isolated projections 36 are arranged, one of which is formed by the main body 5 of the compressed air outlet.
  • the edge 28 of the blank 3 is located around the recess 35 on the surface 2 on.
  • the edge 28 is provided in places with cutouts for receiving the projections 36.
  • Fig. 9 shows you one Fig. 5 analog section through the blanks 3, 11 inserted between the plates 1, 18 of the processing device according to this second development.
  • the plate 1 is provided with a flachbödigen recess 35 whose outline corresponds to the formed by the apex surfaces 26 of the webs 19, 20, 21 closed contour.
  • the projections 36 give the position in which the blanks 3, 11 can be placed on the plate 1 exactly.
  • the plates 1, 18 are pressed against each other, the blanks 3, 11 are pressed into the recess 35, whereby the protruding portion of the edge 28 is angled and the outside of the webs 19, 20, 21 applies. This simplifies the subsequent bending of the edge 28 to the in Fig. 8 shown hairpin contour.
  • Blanks in this form are suitable, for example, to the wings of a folding Korntankdeckels from DE 10 2007 003 653 A1 known type to form.
  • Body panels of a combine harvester can have more complex shapes, but it is obvious that these too can be processed by means of the profile elements 19, 20, 21 which can be mounted on the plate 18 in a largely arbitrary arrangement.
  • a sheet metal part also referred to as sliding protection, which forms a wall between the cleaning fan and the wheel arch of a combine harvester, has the shape of a rectangle with a semi-circle attached to a narrow side.
  • such a part is conveniently and economically manufacturable by the above-described technique by circular arc-shaped profile elements are mounted on the plate 18 instead of the rectilinear profile elements 19, 20, 21 shown in the figures for its semicircular edge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP12001983A 2011-06-10 2012-03-22 Procédé et dispositif destinés à la fabrication de composants multicouches Withdrawn EP2532454A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011105282A DE102011105282A1 (de) 2011-06-10 2011-06-10 Verfahren und Vorrichtung zum Fertigen von mehrschaligen Bauteilen

Publications (1)

Publication Number Publication Date
EP2532454A1 true EP2532454A1 (fr) 2012-12-12

Family

ID=45932096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12001983A Withdrawn EP2532454A1 (fr) 2011-06-10 2012-03-22 Procédé et dispositif destinés à la fabrication de composants multicouches

Country Status (2)

Country Link
EP (1) EP2532454A1 (fr)
DE (1) DE102011105282A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582358A (en) * 1948-06-08 1952-01-15 Northrop Aircraft Inc Method of producing stiffened skin panel
DE19726406A1 (de) * 1997-06-21 1998-12-24 Reum Ag Verfahren zum Formen dünnwandiger Elemente und Vorrichtung hierfür
EP0928941A2 (fr) * 1998-01-07 1999-07-14 N.V. Vasco Radiateur plat
DE102007003653A1 (de) 2007-01-18 2008-07-24 Claas Selbstfahrende Erntemaschinen Gmbh Erweiterungsvorrichtung für einen Schüttgutbehälter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19719426B4 (de) * 1997-05-12 2005-06-16 Dr. Meleghy Hydroforming Gmbh & Co. Kg Verfahren und Vorrichtung zum Herstellen eines Hohlkörpers
DE10151659B4 (de) * 2001-10-19 2004-07-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Fügen von zumindest zwei Bauteilen und Vorrichtung hierfür
DE10316343A1 (de) * 2003-04-10 2004-11-04 Daimlerchrysler Ag Herstellung von Hohlkörpern aus duroplastischen Formmassen
DE102004024878A1 (de) 2004-05-19 2005-12-15 Schäpers, Michael Sandwichelement
EP1642657B1 (fr) * 2004-09-29 2007-02-07 Nissan Motor Co., Ltd. Préforme, méthode de hydroformage et produit hydroformé
DE102005059866A1 (de) * 2005-12-15 2007-06-28 Erbslöh Aluminium Gmbh Bilderrahmen
DE102007014116A1 (de) * 2007-03-23 2008-09-25 Ford Global Technologies, LLC, Dearborn Säule als Teil einer Karosseriestruktur eines Kraftwagens
DE102009051460B4 (de) * 2009-10-30 2012-12-13 Audi Ag Verfahren zum Herstellen eines ein Hohlprofil aufweisenden mehrschaligen Strukturteiles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582358A (en) * 1948-06-08 1952-01-15 Northrop Aircraft Inc Method of producing stiffened skin panel
DE19726406A1 (de) * 1997-06-21 1998-12-24 Reum Ag Verfahren zum Formen dünnwandiger Elemente und Vorrichtung hierfür
EP0928941A2 (fr) * 1998-01-07 1999-07-14 N.V. Vasco Radiateur plat
DE102007003653A1 (de) 2007-01-18 2008-07-24 Claas Selbstfahrende Erntemaschinen Gmbh Erweiterungsvorrichtung für einen Schüttgutbehälter

Also Published As

Publication number Publication date
DE102011105282A1 (de) 2012-12-13

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