EP2094412A1 - Component made of a flat material and method for the production thereof - Google Patents
Component made of a flat material and method for the production thereofInfo
- Publication number
- EP2094412A1 EP2094412A1 EP07825270A EP07825270A EP2094412A1 EP 2094412 A1 EP2094412 A1 EP 2094412A1 EP 07825270 A EP07825270 A EP 07825270A EP 07825270 A EP07825270 A EP 07825270A EP 2094412 A1 EP2094412 A1 EP 2094412A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cell
- flat material
- deformation structure
- height
- deformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/10—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form into a peculiar profiling shape
-
- 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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
- E04C2/324—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material with incisions or reliefs in the surface
Definitions
- the invention relates to a component made of a flat material with an imaginary central surface lying between two main surfaces parallel to one another, wherein the flat material is provided either completely or partially with a regular deformation structure which extends in the manner of a pressing partially perpendicular to the central surface.
- the deformation structure is introduced in the main shape direction perpendicular to the central surface and will generally have the characteristic Beulmuster parabolic see-wells with respect to the central surface, while the Beulr selected at least partially with respect to the central surface have a directed against the main shape, grandeur.
- a disadvantage of the known components is that their increase in rigidity soon reaches their limits. Therefore, this invention is based on the object, a component of the type mentioned in such a way that it has a greater rigidity.
- this method can be integrated as a secondary feature in deep drawing or stretching operations known per se, etc., and allows flat edge zones adjacent to the structural form field. It also makes possible a subsequent, possibly partial, further deformation of pre-formed components.
- the determination of the optimal cell size according to the invention is carried out according to the principle of minimal energy consumption for buckling and can be carried out on the basis of finite element analyzes.
- the tool for a structural shape field can be constructed from modules which enable a flexibilization of the assembly, a reduction of the production costs and improvement of the maintenance.
- the invention further provides a method for producing such a component, which has the features of claim 6.
- the pressing force for generating the bumps and the grandeur of the Beulrandzonen on elastic active media (or the like) is applied to the component.
- the targeted generation of local instabilities also causes the bumps to suddenly jump into the cavities of the tool and shape their geometry independently (freely) and paraboloidally, so that not, as with a stamping Operation, the bulges are formed in a correspondingly shaped cavity of the counter tool.
- Fig. 1c is a section along the line A-A of Fig. 1b.
- FIG. 1d a detail B of FIG. 1c on a larger scale of a component according to the invention
- FIG. 2a is a perspective view of three cells on a component according to the invention in an enlarged compared to FIG. 1a representation, to which the
- Fig. 2b provides a schematic view in which dished, higher Zeilbiegers dashed, whereas straight, lower Zeilbiegers are shown with solid lines; based on
- Fig. 3a to 3c is to be explained on the basis of sectional views of the procedure according to the prior art and the inventive method, wherein Fig. 3a shows the undeformed flat material, Fig. 3b shows a cell-like deformation structure according to the prior art, and Fig. 3c illustrate a deformation structure prepared according to the invention;
- Fig. 4 shows a possible type of press frame usable in the invention for incorporation of the structure field
- Fig. 5 shows schematically the process of a deep drawing main molding for the component with a simultaneous structural deformation in the region of the deep drawing tray;
- Fig. 6 shows, on the basis of a slightly curved shape field structure, the pressing arrangement with an over an elastomeric plate pressure application and one with incorporated cavities according to the structure to be produced provided tool floor (the arrangement can also be reversed);
- Fig. 7a illustrates an isometric view of a modular corner region structure of a form field structure tool, which can be integrated as a minor feature in preferably used deep drawing or ironing tools, including
- Fig. 7c is a plan view
- Fig. 7d illustrates a side view from above.
- a produced deep-drawn component 1 (FIG. 1 a) has a smooth flange 2, while a structural field 4 itself, including the elevations of cell bending edges 14, is introduced into the flat material (sheet metal or plastic) in the form of a slightly raised side-molding element 3 during a deep-drawing operation.
- the deformation structure 4 preferably has the form of a periodic lattice of cells, for example hexagonal cells 5, arranged next to one another.
- hexagonal cells are by no means limited thereto. Because it is quite possible within the scope of the invention to provide instead of a continuous grid also on the deep-drawn bottom surface of the component 1 distributed individual, in particular cell-like deformations, although it is of course clear that in the illustrated complete grid, the stiffening effect is greater. Also, cells do not have to be hexagonal, but can also be triangles, rectangles, double trapezoids, rhomboids, and rhomboid, octagonal, with two opposite ones
- thermoforming tray contains the three-dimensional deformation structure 4, the material (sheet metal, it can also be plastics) remains in the thermoforming chamber.
- Flange 2 due to the action of the tool holder) its flat shape.
- the built in the segments of the deep drawing tool sublimities lead to an increase in the Zeilbieger section 14th
- FIG. 2a and b three of the hexagonal cells 5 are shown contiguous and enlarged.
- the arrangement of the hexagonal cells is expedient, as is known from honeycombs, because usually the largest stiffening is achieved.
- the special feature of this embodiment is the structure of the individual cells. If, for example, a longitudinally oriented sheet metal workpiece, so usually the dia- gulalen Beulbegrenzungsstege in the longitudinal direction, the transverse webs are oriented at right angles to the longitudinal axis.
- the diagonal boundary webs or band bending edges 14 are provided with overhangs directed in the main shaping direction, ie with respect to the central surface 8 plus the proportionate material thickness 12 (FIG 2b), while the transverse webs 15 are lower and have no elevations (Fig. 2b), ie with the main surface 7 of the flat material complete.
- the excessive diagonal cell boundary webs thus form a line 16, namely a zigzag line, which extends over the entire structured field surface area of the workpiece 4 and can also be seen already in FIG.
- the arrangement of these webs is arbitrary, preferably in line form, but produces the greatest effect in the zig-zag arrangement.
- FIG. 3 a shows the position of the main surfaces 7, 9 of the flat material before the deformation, wherein the flat material has a central surface 8 and a material thickness 12.
- FIG. 3 b shows a deformation structure with a cell 5 in a flat material, which has the central area or center plane 8.
- the cell-like recess 5 is now designed so that the flat material from the central surface 8 in a single direction to form a cell recess 10 is arcuate.
- This recess 10 has a width 6 and a height 13. Its tangent forms the central surface 8 a relatively shallow angle ⁇ , so that the recess 10 can be relatively easily compressed upon exertion of pressure on them.
- the shape according to the invention according to FIG. 3c (where the flat material likewise has an upper and a lower main surface 7, 9) is compared with the shape according to the invention in FIG. cut expediently parabolic depression 10, it can be seen that the cell 5 has a relation to the central surface 8 outgoing raised Zeilbiegerand 14 (plus the proportionate material thickness 12), which has a height (11) at the maximum in the middle of the diagonal webs. Due to the longer formation of the cell 5 and its recess 10 delimiting wall results here (compared to the Fig. 3b) steeper tangent that extends at an angle ß to the central surface 8, and therefore also causes a stronger resistance to pressure.
- the production of a locally limited deformation structure can be carried out in any desired manner, even by the rolling process known from DE-A1-197 50 576, but for the production of which the rolls must always be separated from one another. Moreover, because of the resulting sheet curvature, then a straightening process is required for straightening, with some of the stiffness gain being lost again. Furthermore, the rolling process limits a regularly paraboloidal buckling formation, which is advantageous for the purposes of this invention.
- a C-press frame 21 in FIG. 4, by means of which the deformation structure according to the invention can be pressed into flat materials, is shown by way of example for a press operation applied with advantage according to the invention.
- This press has a lower part 25 on which a structural tool 24 is fixed in a known manner.
- a plate 23 of resilient, suitably elastic material of certain hardness is lowered onto the structural tool 24 to press the inserted between the tool and the plate 23 flat material with the main surface 9 against the structural tool 24.
- the elastomer plate 23 is held by a pressure plate carrier 22 on the C-frame 21 and acts on the main surface. 7
- the method can also be applied in multi-acting pressing systems.
- deep-drawing and stretch-drawing tool systems may be mentioned in which the structuring tool is integrated so that, in addition to the main shaping of the sheet, complete or partial structuring in the form according to the invention can be integrated.
- Fig. 5 illustrates such a deep-drawing process, in which deep-drawn and structured in the same operation. Shown is a pressure plate 23 which is fixed in a die 26. In the main shaping can be done so the pulling of the component. Position 3 shows the drawing bowl and position 2 the drawing flange.
- FIG. 6 illustrates that the individual plates 23 and structural tools 24 do not always have to be completely flat, but that even slightly curved flat materials can be provided with structuring in the manner shown. Under certain circumstances, however, the structuring tool can not be constructed from modular individual elements. Such a curved structure can not be produced by the roll patterning method.
- the corner region of the structural tool 24 is illustrated with reference to FIGS. 7a to 7d.
- the hexagonal shape according to Fig. 1a resulting, "single” modules attached, for example, screwed so that the modules are interchangeable, if required by wear or as a result of a transformation of the deformation structure.
- These individual modules comprise once such modules 17, which form the arcuate elevations of the edge zones of the bulge pattern, and those modules 18, which form the not exaggerated edge zones of the bulge pattern. But it is also possible to dispense with the individual modules and provide modules that include a whole Beulzelle. In addition, the entire structural shape field can be worked out of the full tool material. All modules are advantageously mounted by means of clamping plates (in plan view below) via mounting holes. 19 fastened on the tool base plate 20. In the plan view above, this clamping plate has been omitted for illustration.
- any other shape can be selected, for example, a double bow od.
- the arches of the bulge edges can also be directed inward, that is approximately concave, but this is not preferable.
- Bows may also be provided at the lower bowing edges of the tool 18, as long as their upper edge does not extend beyond the major surface 7, relative to the material being deformed. Such sheets may preferably be concave.
- the cell recess 10 may also have a flattening or upward pointing (counterbump).
- the method of which a preferred embodiment has been described may be modified in a variety of ways.
- the position of the plates 23, 24 can be exchanged, so that approximately the plate 24 is at the top.
- a non-compliant die plate with negative engraving to the plate 24 may also be used, but this is generally not cost effective.
- components provided with this mold structure can be further deformed by utilizing the special geometry shape, which can further increase the stiffening effect.
- a particular variant of the invention may be that failure initiation sites are introduced into a component by the mold structure according to the invention, for example, to allow a component to buckle at a certain load, for example in order to enable energy absorption in the event of a strong pulse-like load.
- Another special feature of the invention may be that a component after the main shaping, even after assembly, with appropriate tools (also pliers) can be provided with the inventive shape structure or with individual bumps.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610055657 DE102006055657A1 (en) | 2006-11-23 | 2006-11-23 | Component of a flat material and method for its production |
PCT/IB2007/002948 WO2008062263A1 (en) | 2006-11-23 | 2007-09-28 | Component made of a flat material and method for the production thereof |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2094412A1 true EP2094412A1 (en) | 2009-09-02 |
EP2094412B1 EP2094412B1 (en) | 2014-09-10 |
EP2094412B8 EP2094412B8 (en) | 2014-10-22 |
Family
ID=39048819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07825270.7A Not-in-force EP2094412B8 (en) | 2006-11-23 | 2007-09-28 | Component made of a flat material and method for the production thereof |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2094412B8 (en) |
DE (1) | DE102006055657A1 (en) |
WO (1) | WO2008062263A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006055657A1 (en) | 2006-11-23 | 2008-05-29 | Behrens, Arno, W. Dr.-Ing. | Component of a flat material and method for its production |
DE102010034076B3 (en) | 2010-08-12 | 2011-12-22 | Dr. Mirtsch Gmbh | Method for producing a structured, straight or one- or two-dimensionally curved material web / profile, associated / associated three-dimensionally structured / structured, straight / straight or one- or two-dimensionally curved / curved material web / profile, use thereof and a device for producing the same |
DE102011109123B3 (en) * | 2011-08-02 | 2012-08-02 | Dr. Mirtsch Gmbh | Method for producing sound absorbing component for door used in building, involves moving concave curved shell regions against supporting element tool so as to create pressure membrane stresses in shell |
DE202011051111U1 (en) | 2011-08-25 | 2012-11-28 | Westfalia Presstechnik Gmbh & Co. Kg | Device for producing a 3D structuring component having an edge region |
DE202012103222U1 (en) | 2012-08-25 | 2013-12-02 | Westfalia Presstechnik Gmbh & Co. Kg | Device for producing a 3D structuring component having an edge region |
DE102013017644B4 (en) | 2012-10-25 | 2017-09-21 | Dr. Mirtsch Gmbh | Method for producing a multi-dimensionally structured material web and use thereof |
DE102014112858A1 (en) | 2013-09-06 | 2015-03-12 | Westfalia Presstechnik Gmbh & Co. Kg | Surface element, in particular for a motor vehicle |
DE202014102912U1 (en) | 2013-09-06 | 2014-12-09 | Westfalia Presstechnik Gmbh & Co. Kg | Cover for a brake or a region of a brake or a wheel of a vehicle, in particular Bremsabdeckblech |
DE102014006096B4 (en) | 2014-04-29 | 2018-01-25 | Dr. Mirtsch Gmbh | Method for producing a multi-dimensionally structured material web for thin-walled planar wall elements and use thereof |
DE202014104211U1 (en) | 2014-09-06 | 2015-12-09 | Westfalia Presstechnik Gmbh & Co. Kg | Surface element, in particular for a motor vehicle |
DE102020215849A1 (en) | 2020-12-14 | 2022-06-15 | Rolls-Royce Deutschland Ltd & Co Kg | Tool for vault structuring of a workpiece |
DE102021125209B4 (en) | 2021-09-29 | 2023-04-27 | Universität Stuttgart, Körperschaft Des Öffentlichen Rechts | Process and device for processing a flat, flat workpiece |
Citations (4)
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DE10059055B4 (en) | 2000-11-28 | 2006-03-02 | Dr. Mirtsch Gmbh | Process for the metallic cladding of thermally contaminated surfaces |
DE102005025620A1 (en) | 2005-06-03 | 2006-12-07 | Dr. Mirtsch Gmbh | Structured material sheet for light engineering has rough structuring adjoined by section with smaller dimensioned fine structured elements |
DE102004044509B4 (en) | 2004-09-15 | 2007-10-04 | Dr. Mirtsch Gmbh | Method for joining and stabilizing thermally and mechanically loaded, thin walls with a flat frame |
DE19858432B4 (en) | 1998-12-17 | 2008-04-10 | Dr. Mirtsch Gmbh | Energy absorbing deformation element |
Family Cites Families (18)
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US2233592A (en) * | 1938-07-21 | 1941-03-04 | Commercial Ingredients Corp | Resilient sheet |
FR1089219A (en) * | 1953-09-07 | 1955-03-15 | Process for deforming malleable materials into ribbed sheets and plates obtained by the process | |
US3737880A (en) * | 1971-09-10 | 1973-06-05 | Arvin Ind Inc | Flexible disc with air intake in turntable |
DE4401974A1 (en) | 1993-04-06 | 1995-07-27 | Frank Prof Dr Mirtsch | Buckling method and apparatus |
GB9511847D0 (en) * | 1995-06-10 | 1995-08-09 | Metsec Plc | Metal strip |
DE19611478A1 (en) | 1996-03-23 | 1997-09-25 | Frank Prof Dr Mirtsch | Process for increasing the dimensional stability of thin material webs |
CZ333498A3 (en) | 1996-04-18 | 1999-08-11 | Frank Mirtsch | Process of surface friendly, reinforcing structuring of thin strips of material |
DE19704697A1 (en) * | 1997-02-07 | 1998-08-13 | Bosch Siemens Hausgeraete | Vacuum insulation element |
DE19750576A1 (en) * | 1997-11-15 | 1999-06-02 | Mirtsch Gmbh Dr | Forming humps in a thin strip material to give a stiffer structured appearance |
DE19847902B4 (en) | 1998-10-18 | 2005-12-01 | Dr. Mirtsch Gmbh | Process for forming thin, beulstrukturierter material webs |
DE19856236A1 (en) | 1998-12-06 | 2000-06-15 | Mirtsch Gmbh Dr | Straightening structured sheet material containing bulges, uses rollers to bend or stretch material |
DE10006348C2 (en) * | 2000-02-12 | 2001-12-06 | Daimler Chrysler Ag | Component with locally limited stiffening areas and method for its production |
DE10158276C1 (en) * | 2001-11-28 | 2003-01-16 | Dirk Bohmann | Moulded component, for reinforcing core of sandwich structure core, is formed from two combined moulded sheets with identical projections pressed out from same side |
DE10215912C1 (en) | 2002-04-11 | 2003-06-12 | Daimler Chrysler Ag | Method of pressing motor vehicle body section involves fixing raw blank in lowered die which is further lowered to form transitional zone for panel reinforcement |
DE10241726B3 (en) * | 2002-09-10 | 2004-01-08 | Bohmann, Dirk, Dr.-Ing. | Ventilated cusp plate as the core of a sandwich |
DE102004044550B4 (en) | 2004-09-15 | 2006-11-30 | Dr. Mirtsch Gmbh | Process for honeycomb-structured, energy-absorbing reinforcing and crumple shell for shell-shaped body parts for the protection of pedestrians |
DE102005041516B4 (en) | 2005-09-01 | 2007-11-15 | Dr. Mirtsch Gmbh | Method for three-dimensionally wave-shaped structuring of material webs or thin-walled sheet metal parts or film sections and use thereof and apparatus for carrying out the method |
DE102006055657A1 (en) | 2006-11-23 | 2008-05-29 | Behrens, Arno, W. Dr.-Ing. | Component of a flat material and method for its production |
-
2006
- 2006-11-23 DE DE200610055657 patent/DE102006055657A1/en not_active Withdrawn
-
2007
- 2007-09-28 EP EP07825270.7A patent/EP2094412B8/en not_active Not-in-force
- 2007-09-28 WO PCT/IB2007/002948 patent/WO2008062263A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19858432B4 (en) | 1998-12-17 | 2008-04-10 | Dr. Mirtsch Gmbh | Energy absorbing deformation element |
DE10059055B4 (en) | 2000-11-28 | 2006-03-02 | Dr. Mirtsch Gmbh | Process for the metallic cladding of thermally contaminated surfaces |
DE102004044509B4 (en) | 2004-09-15 | 2007-10-04 | Dr. Mirtsch Gmbh | Method for joining and stabilizing thermally and mechanically loaded, thin walls with a flat frame |
DE102005025620A1 (en) | 2005-06-03 | 2006-12-07 | Dr. Mirtsch Gmbh | Structured material sheet for light engineering has rough structuring adjoined by section with smaller dimensioned fine structured elements |
Non-Patent Citations (8)
Title |
---|
"Technology Guide Principles Applications Trends", 10 May 2009, SPRINGER BERLIN HEIDELBERG, ISBN: 9783540885450, article EICKENBUSCH H. AND G. HASSE: "Self-Organisation", pages: 60 - 63, XP003025285 |
BOBLAN I. ET AL: "First International Industrial Conferece Bionik 2004", FORTSCHRITT-BERICHTE VDI, 22 April 2004 (2004-04-22) - 23 April 2004 (2004-04-23), pages 282 - 289, XP003025281 |
MIRTSCH F. ET AL: "Vault-corrugated sheet metal on the basis of self-organization-fundamental principle, modification, simulation and new products", FIRST INTERNATIONAL INDUSTRIAL CONFERENCE BIONIK 2004, 2004, pages 299 - 313, XP003025282 |
MIRTSCH F. ET AL: "Wolbstrukturen geben Materialien neue perspektiven", STAHL, no. 5, 2002, pages 58 - 60, XP003025284 |
MIRTSCH F.: "Ressourceneffizienz und synergetische eigenschaften durch wolbstrukturieren", SACHSISCHE FACHTAGUNG UMFORTECHNIK DRESDEN, pages 1 - 12, XP003025286 |
See also references of WO2008062263A1 |
WANTZEN B.: "Dreidimensionale Strukturen durch Selbstorganisation", KONSTRUKTION, 6 June 2002 (2002-06-06), pages 4, XP003025283 |
WOLMER A.S.: "BIEGSAME PLATTEN UND SCHALEN", BIEGSAME PLATTEN UND SCHALEN, 1962, pages 100 - 105, XP003025287 |
Also Published As
Publication number | Publication date |
---|---|
EP2094412B8 (en) | 2014-10-22 |
EP2094412B1 (en) | 2014-09-10 |
DE102006055657A1 (en) | 2008-05-29 |
WO2008062263A1 (en) | 2008-05-29 |
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