EP4175775A1 - Procédé de fabrication d'une poutre à section fermée - Google Patents
Procédé de fabrication d'une poutre à section ferméeInfo
- Publication number
- EP4175775A1 EP4175775A1 EP21735972.8A EP21735972A EP4175775A1 EP 4175775 A1 EP4175775 A1 EP 4175775A1 EP 21735972 A EP21735972 A EP 21735972A EP 4175775 A1 EP4175775 A1 EP 4175775A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- punch
- core
- section
- plate
- stamping
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/21—Deep-drawing without fixing the border of the blank
-
- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/003—Simultaneous forming, e.g. making more than one part per stroke
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
-
- 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
-
- 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
- B21D47/04—Making rigid structural elements or units, e.g. honeycomb structures composite sheet metal profiles
-
- 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
- B21D53/00—Making other particular articles
- B21D53/92—Making other particular articles other parts for aircraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/462—Moulding structures having an axis of symmetry or at least one channel, e.g. tubular structures, frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0003—Producing profiled members, e.g. beams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/14—Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
- B64C1/1407—Doors; surrounding frames
- B64C1/1461—Structures of doors or surrounding frames
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Definitions
- the present invention relates to a method of manufacturing a beam having a closed section, formed by the association of a first section and a second section.
- Such beams are used in particular to form the structure of aircraft doors.
- a door is described in patent application WO2019 / 229074A1.
- Its structure comprises in particular two main beams fixed along two lateral edges of the door, and several so-called longitudinal beams arranged perpendicular to the two main beams.
- Each longitudinal beam has an A-shaped cross section, produced by assembling two sections, according to the principle mentioned above.
- the aim of the invention is to provide a method of manufacturing a closed section beam, formed by the association of two sections, this method being:
- This object is achieved by a method of manufacturing a closed section beam, said beam being produced by the association of a first section and a second section, said method comprising the following steps:
- the method comprises a preliminary step of heating the first plate and the second plate.
- the method comprises a step of localized heating of at least one zone of the first profile obtained after the first stamping.
- an intermediate punch is integrated between the second punch and the core during the first stamping.
- the method comprises a step of removing the intermediate punch after the first stamping and before the second stamping.
- the invention relates to a system used for implementing the manufacturing method as defined above, the system comprising:
- the system comprises an intermediate punch intended to be positioned between the second punch and the core.
- the first punch and the second punch comprise assembly means intended to cooperate with corresponding means present on the core.
- the first punch and / or the second punch include indexing pins arranged to ensure the positioning of each plate to be stamped.
- the system comprises a hinge mechanism arranged between the first punch and the second punch.
- the invention relates to an A-section beam, produced by the association of a first section and a second section, the first section comprising over its entire length: - Two support bars,
- a top wall located opposite the support bars
- the second section comprising: - A flat wall and two lateral fixing wings each intended to rest on the internal face of a lateral wing distinct from the first section,
- FIGS. 1A and 1B represent, respectively perspective and side view, an A-section beam, obtainable by the method of the invention
- FIG. 2 represents, in perspective, the various elements of the system used to manufacture, according to the method of the invention, an A-section beam such as that of FIGS. 1 A and 1 B;
- FIG. 3 represents a side view of the various elements of the system used to manufacture, according to the method of the invention, an A-section beam such as that of FIGS. 1A and 1B;
- FIGS. 4A to 4G illustrate, in side view, the various steps of the method of the invention, for manufacturing a beam with an A-section such as that of FIGS. 1A and 1B;
- FIG. 5 shows, in side view, a beam with circular closed section
- FIG. 6 represents, in side view, the various elements of the system used to manufacture, according to the method of the invention, a beam with circular closed section such as that of FIG. 5;
- FIGS. 7A to 7G illustrate, in side view, the various steps of the method of the invention, pourfabriquer a beam with circular closed section.
- the invention relates to a method of manufacturing a beam P1, P2, said beam extending along a so-called longitudinal axis (X).
- the beam is generated by the association of at least two sections, the two sections defining between them a closed cross section.
- it may be a beam with a cross-section in the form of an A, with a cross-section in the shape of a double omega head-to-tail ...
- Other shapes could of course be envisaged.
- a beam P1 having an A-shaped cross section can in particular be used in the structure of an aircraft door, in particular an aircraft door. Since the cabin of an aircraft is pressurized, its doors must be designed to guarantee a reliable and perfectly hermetic closure.
- the door therefore has a reinforced structure on which is fixed the panel forming part of the outer casing of the aircraft.
- This structure may include two main beams, arranged vertically along two parallel edges of the panel and so-called longitudinal beams each extending between the two main beams, at the rear of the panel. These longitudinal beams can be implemented according to the manufacturing method of the invention.
- the beam can be made of a material of the composite type, for example formed from 4 to 5 layers of carbon mat embedded in a thermoplastic resin.
- the method of the invention consists in directly obtaining a beam at the end of two successive stamping operations, ensuring the shaping of the two sections and their assembly.
- the method of the invention is based on the use of a system which comprises: - A first punch, called the lower punch 1, 10;
- a second punch called upper punch 2, 20;
- a possible third punch called intermediate punch 4, 40; Two separate plates 5, 50, 6, 60 are applied to the system in order to form the two sections of the beam.
- the principle consists in particular in fixing the single core 3, 30 to one of the two lower or upper punches during the stamping of the first plate 5, 50 and to the other of the two punches, respectively upper or lower, when of the stamping of the second plate 6, 60.
- the first P10 profile comprises over its entire length:
- a top wall 102 located opposite the support bars
- Two side wings 103, 104 extending obliquely towards each other to each join a separate support bar to the top bar
- the second profile P11 comprises over its entire length:
- the system employed is more particularly the following:
- the lower punch 1 has a cross section defining a relief pattern 108 in the shape of a trapezoid.
- the core 3 has a solid cross section in the shape of a trapezoid, intended to complete the relief pattern drawn by the lower punch.
- the upper punch 2 has a cross section defining a recessed pattern 109, of complementary shape to that of the lower punch accompanied by that of the core.
- the intermediate punch 4 is in the form of a profile having a hollow trapezoidal cross section open at its base.
- Assembly means can be provided to assemble the core on the lower punch as well as on the upper punch.
- the core 3 can thus include one or more through openings 111 made along its plane of symmetry.
- the lower punch may include one or more corresponding studs 110 rising above its upper plane.
- the upper punch as well as the intermediate punch can also include openings 112, 113 made in the same axis as those of the core and as the studs of the lower punch in order to allow superimposed assembly of the various elements.
- each plate is positioned on a handling frame 114, 115, allowing it to be handled and to be held in position during stamping.
- the intermediate punch 4 is used but it would be possible to do without it.
- a first plate 5 to be stamped is disposed on the upper plane of the lower punch 1.
- the first plate 5 has a rectangular surface.
- the intermediate punch 4 is housed in the hollow pattern of the upper punch 2 as well as the core 3, the intermediate punch 4 being arranged between the upper punch 2 and the core 3.
- the upper punch 2 and the intermediate punch 4 are raised, the core 3 being held on the upper plane of the central web of the first section P10.
- the intermediate punch 4 is withdrawn.
- heating C of the two oblique wings of the first section can be undertaken in order to soften the material.
- This step is optional, because before stamping, each plate is likely to come out of the oven and can thus already be at temperature.
- a second plate 6 is positioned between the upper punch 2 and the assembly formed by the superposition of the lower punch 1, the first profile P10 and the core 3.
- the upper punch is closed on the assembly defined above in FIG. 4E, with a view to stamping the second plate 6, taken between the upper punch and this assembly.
- the second plate 6 has a rectangular surface area greater than that of the first plate.
- the second plate 6 is stamped, thus forming a second section P11 comprising a flat central core and two symmetrical oblique wings, arranged on either side of its upper core and two flat support bars each extending a separate wing. Its two oblique wings each come to bear against the external face of an oblique wing of the first section P10, bringing them to temperature making it possible to ensure their cohesion and assembly, thus forming the beam P1 with A-section shown in FIGS. 1A and 1 B.
- the lower punch 10 has a cross section defining a recessed pattern 200 in the shape of a semicircle. On either side of its hollow pattern, the lower punch has two bearing planes.
- the upper punch 20 has a cross section defining a recessed pattern 201, in the shape of a semicircle of diameter identical to that of the lower punch. On either side of its hollow pattern, the upper punch has two bearing planes. - The core 30 has a solid cross section in the form of a disc, so as to be able to be housed in the hollow space defined by the two recessed patterns of the upper and lower punches.
- the intermediate punch 40 is in the form of a profile having a hollow cross section in the shape of a semicircle. It is intended to be positioned between the upper punch and the core.
- Fastening means (not shown) can be provided to assemble the core on the lower punch as well as on the upper punch.
- Figures 7A to 7G illustrate this principle.
- a first plate 50 is positioned on the bearing planes of the lower punch 10.
- the first plate 50 has a rectangular surface.
- the intermediate punch 40 is housed in the hollow pattern of the upper punch as well as the core 30, the intermediate punch 40 being disposed between the upper punch 20 and the core 30.
- the assembly formed of the upper punch 20, the intermediate punch 40 and the core 30 is closed on the lower punch 10 to stamp the first plate 50 taken between the lower punch 10 and this assembly.
- the first plate 50 is stamped, thus forming a first section P20 comprising a central core with a semi-circular section and two flat side wings, symmetrical, on either side of its central core.
- Figure 7C The upper punch 20 and the intermediate punch 40 are raised, the core 30 being held on the upper plane of the central web of the first section P20.
- Figure 7D The intermediate punch is removed.
- heating C of the two side wings of the first section can be undertaken in order to soften the material. This step is optional, because before stamping, each plate is likely to come out of the oven and can thus already be at temperature.
- a second plate 60 is positioned between the upper punch 20 and the assembly formed by the superposition of the lower punch 10, the first profile P20 and the core 30.
- the second plate 60 has a surface. rectangular with dimensions identical to those of the first plate.
- the upper punch 20 is closed on the assembly defined above in FIG. 7E, with a view to stamping the second plate 60, taken between the upper punch 20 and this assembly.
- the second plate 60 is stamped, thus forming a second section P21 comprising a semicircular central core and two symmetrical side wings, arranged on either side of its upper core. Its two lateral wings each come to bear against the upper face of a lateral wing of the first section, bringing them to temperature making it possible to ensure their cohesion and assembly, thus forming the beam with a circular closed section.
- indexing pins can be provided on the bearing plane of the lower punch 1, 10, in order to facilitate the positioning of the first plate 5, 50.
- the system can incorporate a hinge mechanism between the upper punch 2, 20 and the lower punch 1, 10, in order to perfectly adjust the upper punch relative to the lower punch, that is to say without risk of slipping, during stamping operations.
- a hinge mechanism between the upper punch 2, 20 and the lower punch 1, 10, in order to perfectly adjust the upper punch relative to the lower punch, that is to say without risk of slipping, during stamping operations.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Punching Or Piercing (AREA)
- Powder Metallurgy (AREA)
- Body Structure For Vehicles (AREA)
- Electron Beam Exposure (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2006991A FR3112091B1 (fr) | 2020-07-02 | 2020-07-02 | Procédé de fabrication d'une poutre à section fermée |
| PCT/EP2021/067597 WO2022002805A1 (fr) | 2020-07-02 | 2021-06-27 | Procédé de fabrication d'une poutre à section fermée |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4175775A1 true EP4175775A1 (fr) | 2023-05-10 |
Family
ID=42129868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21735972.8A Pending EP4175775A1 (fr) | 2020-07-02 | 2021-06-27 | Procédé de fabrication d'une poutre à section fermée |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20230249242A1 (fr) |
| EP (1) | EP4175775A1 (fr) |
| BR (1) | BR112022025881A2 (fr) |
| CA (1) | CA3181671A1 (fr) |
| FR (1) | FR3112091B1 (fr) |
| WO (1) | WO2022002805A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1071714S1 (en) * | 2024-11-14 | 2025-04-22 | Luoyang Steelfurn Import Export Trading Co., Ltd. | Shelf support beam |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20010121A1 (it) * | 2001-02-13 | 2002-08-13 | Campagnolo Srl | Procedimento per la fabbricazione di un cerchio di ruota di bicicletta, dispositivo per l'attuazione del procedimento, e cerchio cosi' otten |
| JP4640481B2 (ja) * | 2008-09-01 | 2011-03-02 | マツダ株式会社 | 金属製閉断面部材の製造方法 |
| ES2383986B1 (es) * | 2009-12-30 | 2013-05-16 | Airbus Operations, S.L. | Cuaderna de fuselaje de aeronave en material compuesto con alma estabilizada. |
| FR3061450B1 (fr) * | 2016-12-29 | 2021-11-05 | Plastic Omnium Cie | Pieces structurelles comprenant un insert surmoule |
| FR3081828B1 (fr) | 2018-06-02 | 2021-04-16 | Latecoere | Porte de cabine pressurisee d'aeronef a structure formee de poutres |
| GB2575103A (en) * | 2018-06-29 | 2020-01-01 | Airbus Operations Ltd | Method of manufacturing duct stringer |
-
2020
- 2020-07-02 FR FR2006991A patent/FR3112091B1/fr active Active
-
2021
- 2021-06-27 CA CA3181671A patent/CA3181671A1/fr active Pending
- 2021-06-27 BR BR112022025881A patent/BR112022025881A2/pt unknown
- 2021-06-27 US US18/003,327 patent/US20230249242A1/en active Pending
- 2021-06-27 EP EP21735972.8A patent/EP4175775A1/fr active Pending
- 2021-06-27 WO PCT/EP2021/067597 patent/WO2022002805A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CA3181671A1 (fr) | 2022-01-06 |
| US20230249242A1 (en) | 2023-08-10 |
| WO2022002805A1 (fr) | 2022-01-06 |
| BR112022025881A2 (pt) | 2023-01-10 |
| FR3112091A1 (fr) | 2022-01-07 |
| FR3112091B1 (fr) | 2022-09-30 |
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