EP0584020A1 - Verfahren zur Herstellung eines Verbandes aus zwei vorgeklebten Stücken, einschliesslich einer Verformungsetappe - Google Patents

Verfahren zur Herstellung eines Verbandes aus zwei vorgeklebten Stücken, einschliesslich einer Verformungsetappe Download PDF

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Publication number
EP0584020A1
EP0584020A1 EP93402071A EP93402071A EP0584020A1 EP 0584020 A1 EP0584020 A1 EP 0584020A1 EP 93402071 A EP93402071 A EP 93402071A EP 93402071 A EP93402071 A EP 93402071A EP 0584020 A1 EP0584020 A1 EP 0584020A1
Authority
EP
European Patent Office
Prior art keywords
parts
punch
pieces
die
adhesive layer
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
Application number
EP93402071A
Other languages
English (en)
French (fr)
Other versions
EP0584020B1 (de
Inventor
Philippe Yannick André Blot
Frédéric Abel Henri Leroy
Didier Simon Vigneron
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.)
Safran Transmission Systems SAS
GEC Alsthom ACB
Original Assignee
ACB SARL
GEC Alsthom ACB
A C B Ste
Hispano Suiza SA
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 ACB SARL, GEC Alsthom ACB, A C B Ste, Hispano Suiza SA filed Critical ACB SARL
Publication of EP0584020A1 publication Critical patent/EP0584020A1/de
Application granted granted Critical
Publication of EP0584020B1 publication Critical patent/EP0584020B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
    • B21D26/055—Blanks having super-plastic properties
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1025—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina to form undulated to corrugated sheet and securing to base with parts of shaped areas out of contact

Definitions

  • the invention relates to a method of manufacturing assemblies composed of two glued parts and which further comprises a forming step.
  • the method used until now by the applicant company consisted of hot forming and separately the parts making up the assembly, in a so-called superplastic deformation regime where large elongations are possible.
  • the two pieces were then glued by interposing a layer of epoxy between their contacting surfaces. For this they were placed in an autoclave enclosure where pressure was applied to the parts to press them as well as a temperature sufficient to transform the epoxy layer and allow this material to become sticky.
  • this method was not very advantageous when the assembly was a stiffened panel of hollow ribs produced by the forming of one of the parts, because the pressure necessary for bonding tended to crush them.
  • the cavities of the ribs therefore had to be filled by hand with a crush-resistant material such as a honeycomb structure.
  • French Patent 2,374,109 describes the pressing of a coating on an airplane wing using balloons filled with air to bring it to the desired shape, followed by disassembly and the application of a adhesive layer, after which the assembly can be carried out.
  • This process requires many manual interventions and in general the interposition of an intermediate layer at the time of forming to avoid any sticking and form the right shape. It is designed for large parts in small series.
  • the invention relates to a method of manufacturing assemblies composed of two glued parts, characterized in that it consists in placing the parts on two elements, punch and press die, in placing an adhesive layer on surfaces of at least one of the pieces facing the other of the pieces, to form at least one of the pieces by pressurizing between the punch and die to force the material of said piece into cavities of the punch on which it is placed, and to press the pieces one on the other by approaching the punch and matrix.
  • the assemblies are thus carried out almost without manual intervention and without changing tools.
  • the parts will frequently be hot formed, at a temperature creating a more or less pronounced superplasticity regime, as required, that is to say according to the extent of the deformations required.
  • the part to be obtained is an engine hood element in the form of a cylinder or cone portion.
  • the sheets have been degreased and pickled beforehand and surfaces of each sheet 1 and 3 have been applied to the portions to be bonded (that is to say to the portions which do not come opposite grooves 5) a thin sub-layer of bonding material 6 (a few microns thick is sufficient) with a spray gun then a layer of adhesive material 7 (a few tens of microns thick).
  • the bonding material can be a thermosetting material or a thermostable material of the polyimide type and the adhesive material can be a polyetheretherketone (PEEK) or more generally a thermoplastic material.
  • PEEK polyetheretherketone
  • the first step consists in obtaining the hot forming or forging of the sheets, here only of the lower sheet 3.
  • the elements 2 and 4 are kept apart by spacers 8 which keep the upper die 2 raised.
  • the spacers 8 consist of shims which can be placed on the same table T as the lower punch 4 and extend along the joint lines.
  • the elements 2 and 4 are enclosed in a sealed enclosure E which is then subjected to sufficient pressure so that the material of the sheets 1 and 3 which is not supported by the surface of the elements 2 and 4 is deformed: the ribs 9 produced by the plastic or superplastic flow of the metal from the internal sheet 3 at the bottom of the grooves 5 are thus formed as seen in FIG. 2.
  • the whole is heated to allow sufficient plastic deformation.
  • a temperature of 350 to 400 ° C may suffice with an effective pressure of 0.6 to 1.5 bars in a specific case.
  • Relatively low temperatures are sufficient when the required deformations are rather small, as is the case here, and it is unnecessary to heat at the regime of the highest superplasticity.
  • the adhesive layer 7 and the bonding sublayer 6 are not destroyed by heating, but this condition depends on the materials which constitute them and it is possible to satisfy them quite easily in practice.
  • the bonding sublayer 6 can moreover often be omitted.
  • the next step begins with the removal of the spacers 8 so that the upper blank 2 falls on the lower punch 4 and that the glued surfaces of the sheets 1 and 3 come into contact.
  • the heating and the pressure are brought to sufficient values so that the material of the layer 7 becomes adhesive and that the sheets 1 and 3 are pressed sufficiently firmly one on the other by the pressure which is exerted on the outside of elements 2 and 4.
  • Temperatures from 380 to 420 ° C and pressures from 1 to 5 bars lead to satisfactory results in the present example.
  • the side panels can be omitted in this second step.
  • the tools and the parts are then allowed to cool and the assembly is removed from the mold, in which the sheets 1 and 2 now form a stiffened panel, shown in FIG. 3, which has sufficient strength to the glued joint.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Making Paper Articles (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Adhesives Or Adhesive Processes (AREA)
EP93402071A 1992-08-19 1993-08-18 Verfahren zur Herstellung eines Verbandes aus zwei vorgeklebten Stücken, einschliesslich einer Verformungsetappe Expired - Lifetime EP0584020B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9210123 1992-08-19
FR9210123A FR2694900B1 (fr) 1992-08-19 1992-08-19 Procédé de fabrication d'assemblages composés de deux pièces collées et comportant une étape de formage.

Publications (2)

Publication Number Publication Date
EP0584020A1 true EP0584020A1 (de) 1994-02-23
EP0584020B1 EP0584020B1 (de) 1996-01-10

Family

ID=9432930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93402071A Expired - Lifetime EP0584020B1 (de) 1992-08-19 1993-08-18 Verfahren zur Herstellung eines Verbandes aus zwei vorgeklebten Stücken, einschliesslich einer Verformungsetappe

Country Status (10)

Country Link
US (1) US5399215A (de)
EP (1) EP0584020B1 (de)
BR (1) BR9305608A (de)
CA (1) CA2104315C (de)
DE (1) DE69301293T2 (de)
ES (1) ES2082612T3 (de)
FR (1) FR2694900B1 (de)
GR (1) GR3019350T3 (de)
RU (1) RU2086337C1 (de)
WO (1) WO1994004293A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4340587C1 (de) * 1993-11-29 1995-05-18 Schultz Gmbh Aurora Heizungs-, Belüftungs- und/oder Klimatisierungsvorrichtung für Fahrzeuge
US6102927A (en) * 1999-04-30 2000-08-15 Wright; George A. Blood lancet and method of manufacture
US7431196B2 (en) * 2005-03-21 2008-10-07 The Boeing Company Method and apparatus for forming complex contour structural assemblies
US11993388B2 (en) * 2021-09-02 2024-05-28 Rohr, Inc. Corrugated stiffening devices utilizing peaks and valleys and methods of manufacture
US11780179B2 (en) 2021-09-02 2023-10-10 Rohr, Inc. Thermoplastic composite panel with corrugated peaks and troughs stiffening systems and methods
US12014712B2 (en) 2021-09-02 2024-06-18 Rohr, Inc. Corrugated acoustic stiffening devices and methods

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1524550A (fr) * 1967-05-23 1968-05-10 Olin Mathieson Procédé d'assemblage de feuilles de métal pour former plus particulièrement un article ou panneau creux
FR2487705A1 (fr) * 1980-07-31 1982-02-05 Daimler Benz Ag Procede de fabrication de pieces embouties, en particulier pour carrosseries de vehicules automobiles; outillage pour sa mise en oeuvre et pieces embouties obtenues
EP0110311A1 (de) * 1982-11-26 1984-06-13 Fr. Kammerer GmbH Flachwärmetauscherplatte und Verfahren zu deren Herstellung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2371847A (en) * 1942-12-18 1945-03-20 Chrysler Corp Apparatus and method for bonding composite articles
US2670501A (en) * 1951-08-24 1954-03-02 Us Rubber Co Method of forming plastic material
NL275557A (de) * 1957-12-23
US3124807A (en) * 1962-01-19 1964-03-17 Method of making three-dimensional
US3950204A (en) * 1972-09-29 1976-04-13 Texas Instruments Incorporated Low pressure, thin film bonding
US3935358A (en) * 1973-03-29 1976-01-27 E. I. Du Pont De Nemours & Co. Process for preparing a hollow, rib-reinforced laminated structure
GB1495655A (en) * 1975-03-20 1977-12-21 Rockwell International Corp Method for making metallic structures from two or more selectively bonded sheets
GB1593378A (en) * 1976-12-17 1981-07-15 Lucas Industries Ltd Aircraft surface structure
US4192701A (en) * 1977-07-14 1980-03-11 Brushaber Larry R Double wall plastic article and method and apparatus for forming a double wall plastic article with a pair of thermoplastic sheets
US4457797A (en) * 1982-03-08 1984-07-03 E. I. Dupont De Nemours And Company Process for thermoforming reinforced polymer sheets
IT1176673B (it) * 1983-09-23 1987-08-18 Gen Electric Pala cava per turbomacchina
GB8901742D0 (en) * 1989-01-26 1989-03-15 British Aerospace Adhesive bonding of structures

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1524550A (fr) * 1967-05-23 1968-05-10 Olin Mathieson Procédé d'assemblage de feuilles de métal pour former plus particulièrement un article ou panneau creux
FR2487705A1 (fr) * 1980-07-31 1982-02-05 Daimler Benz Ag Procede de fabrication de pieces embouties, en particulier pour carrosseries de vehicules automobiles; outillage pour sa mise en oeuvre et pieces embouties obtenues
EP0110311A1 (de) * 1982-11-26 1984-06-13 Fr. Kammerer GmbH Flachwärmetauscherplatte und Verfahren zu deren Herstellung

Also Published As

Publication number Publication date
DE69301293D1 (de) 1996-02-22
US5399215A (en) 1995-03-21
DE69301293T2 (de) 1996-08-01
FR2694900B1 (fr) 1994-10-21
RU2086337C1 (ru) 1997-08-10
GR3019350T3 (en) 1996-06-30
CA2104315A1 (fr) 1994-02-20
WO1994004293A1 (fr) 1994-03-03
BR9305608A (pt) 1994-12-13
ES2082612T3 (es) 1996-03-16
FR2694900A1 (fr) 1994-02-25
EP0584020B1 (de) 1996-01-10
CA2104315C (fr) 2002-05-07

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