Classifications

• • 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
  • B64C1/06—Frames; Stringers; Longerons ; Fuselage sections
  • B64C1/12—Construction or attachment of skin panels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B64—AIRCRAFT; AVIATION; COSMONAUTICS
  • B64C—AEROPLANES; HELICOPTERS
  • B64C3/00—Wings
  • B64C3/26—Construction, shape, or attachment of separate skins, e.g. panels
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
  • F16B5/0004—Joining sheets, plates or panels in abutting relationship
  • F16B5/0056—Joining sheets, plates or panels in abutting relationship by moving the sheets, plates or panels or the interlocking key perpendicular to the main plane
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
  • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
  • F16B5/025—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread specially designed to compensate for misalignement or to eliminate unwanted play
• • 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
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49616—Structural member making
  • Y10T29/49622—Vehicular structural member making
• • 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
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/4998—Combined manufacture including applying or shaping of fluent material

Definitions

• the invention relates to a panel assembly in which at least two panels are secured longitudinally to one another.
• longitudinally joined together we mean joined together edge to edge. More specifically, the invention relates to the junction zone between two panels of the panel assembly.
• the invention also relates to a method of mounting a panel assembly, wherein at least two panels are secured longitudinally to one another.
• the invention finds applications when it is necessary to secure at least two panels, such as sheets of sheet metal or composite materials.
• the invention is more particularly applications in the field of aeronautics, wherein the junction between two adjacent panels of a panel assembly can play a significant way on the aerodynamic drag.
• the invention also has applications in the field of automobile, or rail, for the assembly of panels for forming the outer body of a motor vehicle, or a train wagon.
• FIG. 1 it is known to use a connecting element 3 to which each of the panels 1, 2 is secured, in order to make the junction between said adjacent panels 1, 2 removable.
• a first panel is dismountably mounted on the connecting piece 3 by means of a removable screw 4.
• the second panel 2 is fixedly mounted on the connecting piece 3 by means of one or more structural screws 5.
• the panels 1, 2 are arranged edge to edge, without being contiguous, so that a longitudinal slot 6 is formed between said panels 1, 2 adjacent. This longitudinal slot 6 is necessary, but may disturb the flow of air on the outer surface of the panels 1, 2.
• a seal 7 smooths the surface between the two panels 1, 2 adjacent.
• the connecting piece 3 comprises a trimming 8, or unevenness, intended to compensate for the difference in thickness between the first panel 1 and the second panel 2.
• the thickness of a panel generally means the dimension of said panel extending perpendicularly to the outer surface of said panel. Indeed, the thickness e of the first panel 1, at the junction zone between the two panels, is strictly less than the thickness E of the second panel 2.
• junction zone is meant the portion of the surface of each of the panels 1, 2 involved in the connection between said panels.
• the height of the trimming 8 corresponds to the difference between the thickness E of the second panel 2 and the thickness e of the first panel 1.
• the purpose of this trimming 8 is to maintain the panels 1, 2 at the same level, at the level of the junction zone, so as not to have misalignment between said panels once connected to one another.
• misalignment is meant a displacement of contiguous panels 1, 2 which normally should be flush to the same level once connected to each other.
• the longitudinal slot 6 between the panels 1, 2 forms a step, which can disturb the flow of air on the outer surface of the panel assembly 1, 2.
• the operating tolerance of the state of the art in corrugation tolerance, is transformed by using panels whose surface at the junction zone has a difference in level intended to minimize misalignment between the two. panels. More specifically, each panel comprises two successive trays, separated from each other by a step. The lower or lower trays of each of the panels face each other, said panels being connected to one another at their lower trays.
• the misalignment instead of being concentrated at the longitudinal slot between the two panels, is spread over the cumulative surface of the two adjacent lower trays. The risk of misalignment is not removed, but when it occurs it is spread over a larger area, so that in some cases it may even be possible to increase manufacturing and assembly tolerances. elements involved in the connection between the two panels.
• the hollow obtained may have a variable height, from one end to the other of said hollow, but also from one assembly to another.
• the height of the hollow means the dimension extending perpendicularly to the surface of the panels.
• the sum of the heights of the two steps facing each other is substantially equal to the sum of the tolerance intervals of fabrication and assembly accepted at the level of the junction zone of the two panels.
• the height of the step means the dimension extending perpendicular to the surface of the panel.
• Tolerance intervals are the accepted tolerance intervals for each of the parts involved in the joining of the two panels. panel assembly.
• the invention therefore relates to an assembly of panels in which two panels are secured to one another, characterized in that one surface of each of the two panels has a difference in level, so as to comprise an upper bearing and a lower bearing, the two panels being secured to one another at their lower bearings.
• the assembly according to the invention it is possible to provide all or part of the following additional characteristics: the sum of the heights of the unevenness of the two panels is equal to the sum of the tolerance intervals accepted in the zone; junction between the two panels.
• each height of unevenness is equal to half of the sum of the tolerance intervals accepted in the zone of junction between the two panels.
• the two panels are secured to one another by means of a connecting element.
• a hollow in the junction area is filled by a smoothing joint.
• the invention also relates to a method of mounting such a panel assembly in which two panels are secured to one another, characterized in that it comprises the following steps: - sum the accepted tolerance intervals for the elements of the assembly involved in the joining of the two panels;
• Figure 1 a sectional view of a panel assembly already described, as it should be theoretically;
• Figure 2 is a sectional view of a detail of a junction between two panels, at a longitudinal slot extending between the two panels, according to the state of the art already described;
• Figure 3 a cross section of two adjacent panels secured to one another according to the invention
• Figure 4 a schematic representation in section of two panels according to the invention.
• FIG. 3 shows a cross-section of an assembly 100 of panels, in which two panels 101, 102 are secured to one another via a connecting piece 103.
• the junction piece 103 comprises a jig 104 intended to compensate for the difference in thickness between the first panel 101 and the second panel 102.
• the trimming is directed so that the additional thickness of the panel 102 is included in the trough 104 of the junction piece 103.
• the surfaces of the two panels 101, 102 are in alignment with each other. one of the other once said panels 101, 102 attached to the junction piece 103.
• each of the panels 101, 102 is provided with a two-stage surface, respectively forming an upper bearing
• 106 between the upper bearings 112, 114 and lower 113, 115 may be a function of manufacturing and assembly tolerances usually accepted on the elements of the panel assembly, and therefore vary depending on the applications, materials used etc.
• the panel 101 on the left in the figure relative to the panel 102 on the right, has a drop 105 downward from the left to the right, while the panel 102 has a difference in level 106 descending from the right to the left.
• the lower bearings form a hollow surface, or a recess 107, bordered by the upper bearings 112, 114.
• the height h of each of the unevennesses 105, 106 is substantially equal to half the sum of the intervals of tolerance tolerance accumulated at the elements of the assembly participating in the junction of the two panels 101, 102.
• the sum of the tolerance intervals corresponds to the accepted tolerance intervals at each of the two panels 101, 102 and the junction piece 103.
• the sum of the heights h of the two differences in level 105 and 106 equals the sum of accepted manufacturing tolerance intervals for parts
• any misalignment between the panels 101 and 102 is spread over the entire length L of the hollow 107.
• length L of the hollow is meant the dimension of the hollow extending between the two gradients 105, 106.
• a filling joint 109 such as a pasty mastic sealant.
• the thickness of the panel 101 As can be seen in FIG. 4, the thickness of the panel 101,
• the first panel 101 has a variable thickness. Specifically, the thickness of the first panel
• FIG. 5 a cross section of an aircraft wing 120 may comprise a panel assembly according to the invention.
• the panels 124, 125 of the wing 120 are assembled to each other so as to provide four longitudinal slots 123, at which it is possible to have a misalignment between adjacent panels 124, 125.
• wing 120 for making a panel assembly, use is made of:
• a composite wing panel 125 molded external face with internal surface bladder, with a thickness of 10 mm +/- 4%, corresponding to +/- 0.4 mm;
• a panel 124 forming the nose of the leading edge of the wing 120, in composite, provided with a monolithic portion of thickness 4 mm +/- 4% corresponding to +/- 0.16 mm.
• a metal tongue 126 made of +/- 2% accuracy corresponding to +/- 0.2 mm, said tongue 126 serving as a connecting piece between the two panels 124, 125.
• the total of the cumulative tolerance intervals at the junction between the two panels 124, 125 therefore corresponds to the sum of the tolerance intervals at the two panels 124, 125 and the tab 126, that is to say + / - 0.76 mm.
• the range of manufacturing tolerances that can be obtained at the end of the assembly is therefore 1.52 mm.
• the sum of the heights h of the unevenness, divided by the length L of the depression formed by the lower bearings, must be less than or equal to 0.01, that is to say, to size / L ⁇ 0.01.
• htotaie we mean the sum of the heights h of the unevennesses at the level of the panels to be joined.
• panels 124, 125 are used whose sum of the heights h of the unevenness is equal to 1.52 mm.
• the length L of the hollow at the junction zone must then be equal to 152 mm.
• This spreading value is perfectly compatible with the definition of implantation of the fastenings of each of the panels, for example 60 mm for the leading edge panel 124, and 10 mm for the wing panel 125.
• the light weight Hollow thus created to house screw mills, which can see their tolerance of disruption increased, as long as they remain covered by the smoothing joint.
• Such panels according to the invention having a desired unevenness of height h, can be obtained by molding, by placing impressions, or counterforms, in the corresponding molds. It is also possible to machine the panels from panels of greater thickness to obtain the desired panels, presenting the expected unevennesses.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Aviation & Aerospace Engineering (AREA)
• Connection Of Plates (AREA)
• Joining Of Building Structures In Genera (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=37820572

Family Applications (1)

Country Status (9)

Families Citing this family (28)

Family Cites Families (13)

• 2006
  • 2006-09-08 FR FR0653648A patent/FR2905739B1/fr not_active Expired - Fee Related
• 2007
  • 2007-08-28 EP EP07823748A patent/EP2059440A1/fr not_active Withdrawn
  • 2007-08-28 CA CA2661123A patent/CA2661123C/fr not_active Expired - Fee Related
  • 2007-08-28 US US12/438,174 patent/US20100077690A1/en not_active Abandoned
  • 2007-08-28 JP JP2009527179A patent/JP2010502509A/ja not_active Ceased
  • 2007-08-28 BR BRPI0716164-6A2A patent/BRPI0716164A2/pt not_active IP Right Cessation
  • 2007-08-28 WO PCT/FR2007/051849 patent/WO2008029049A1/fr active Application Filing
  • 2007-08-28 RU RU2009113010/11A patent/RU2418205C2/ru not_active IP Right Cessation
  • 2007-08-28 CN CN200780033230.6A patent/CN101511673B/zh not_active Expired - Fee Related

Non-Patent Citations (1)

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