EP1329270B1 - Appareil pour riveter des éléments de renforcement longitudinaux sur des panneaux en aluminium - Google Patents

Appareil pour riveter des éléments de renforcement longitudinaux sur des panneaux en aluminium Download PDF

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Publication number
EP1329270B1
EP1329270B1 EP02009853A EP02009853A EP1329270B1 EP 1329270 B1 EP1329270 B1 EP 1329270B1 EP 02009853 A EP02009853 A EP 02009853A EP 02009853 A EP02009853 A EP 02009853A EP 1329270 B1 EP1329270 B1 EP 1329270B1
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EP
European Patent Office
Prior art keywords
riveting
panel
hole
tool
mandrel
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.)
Expired - Lifetime
Application number
EP02009853A
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German (de)
English (en)
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EP1329270A1 (fr
Inventor
Bruno Bisiach
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Individual
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/26—Drives for riveting machines; Transmission means therefor operated by rotary drive, e.g. by electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
    • B21J15/142—Aerospace structures

Definitions

  • the present invention relates to a device for riveting longitudinal reinforcing members onto aluminium panels.
  • the invention concerns a device for riveting the so-called “stringers” onto aluminium panels for preparing parts of aircraft fuselages or wings.
  • the stringers which may have different cross-sectional shapes, for instance the shape of a T or of an upset J, are secured to the aluminium panels either by riveting, if they have a suitable flap, or, according to more recent techniques, by laser welding.
  • Riveting is at present the preferred technique, since it exploits a widely tested technology, less critical than welding.
  • riveting of metal parts entails a sequence of simple operations, namely boring both parts to be joined, inserting a bonding agent into the hole and lastly inserting the rivet and clinching it.
  • the above operations are generally performed in automatic manner, by moving the workpiece relative to the boring and riveting tools, which remain stationary.
  • a known device for automatically riveting panels, in particular for aircraft wings, is disclosed in US patent No. 4,762,261.
  • the device disclosed therein uses two robotised arms, which are equipped each with a riveting tool and work in opposed relationship onto an aircraft wing, arranged in substantially vertical position.
  • the robotised arms are movable in a vertical plane perpendicular to the longitudinal wing direction, and a moving system including a carriage slidable on rails is provided to allow displacing the wing during working.
  • the device disclosed in said patent while allowing automatically riveting a whole panel, has however some limits.
  • the system for longitudinally moving the panel has to support and displace with extreme accuracy even a whole wing: hence it is a complex, cumbersome and expensive system, since it must ensure the greatest stability during working and it can hardly ensure that no oscillation at all occurs.
  • the present invention therefore aims at solving the problem of how to simplify the process of riveting the stringers onto aluminium panels, while ensuring a high level of reliability and accuracy.
  • an automatic riveting system is provided that is capable of performing the whole of the operations included in the working cycle, from the boring to the final rivet clinching, in a quick manner and without requiring panel displacement during working.
  • a device for the automatic riveting of a longitudinal reinforcing member, a so-called stringer, onto an aluminium panel comprises two robotised arms, namely a first arm 2 equipped with a multiple-tool head, and a second arm 4 equipped with a backing tool 22.
  • the riveting device is controlled by a numerical control system of known type that guides robotised arms 2 and 4 in pre-set movements in space according to a given working program. Thanks to the freedom of movement of robotised arms 2 and 4 in space, the system is generally capable of performing riveting operations onto an entire panel 7 without need for displacing or rotating the panel. Indeed, panel 6 being worked is secured to a stationary support 8, of which only two end portions are shown in Fig. 1, firmly supporting the panel in vertical position. The vertical panel position depends on the supporting structure of robotised arms 2 and 4, but in no way it affects the working cycle to be described hereinbelow.
  • the size of the panel shown in Fig. 1 is merely indicative, and the actual panel size can change, as far as both the height and the width are concerned, compatibly with the range of reach of the robotised arms.
  • Robotised arm 2 bears a powered double slide 10, shown in detail in Figs. 2 and 3, which allows the independent displacement of two moving plates 30, 32 along a same axis.
  • a bearing foot 12 and a rotating table 14, respectively, are secured to said plates.
  • both moving plates 30, 32 slide along the same guides 24, 26 and are coupled each with a threaded shaft 36, 34, which is rotated by a respective electric motor 40, 38 by means of a belt 45, 46.
  • the rotation of each threaded shaft is therefore converted into a linear displacement of the associated plate.
  • the stroke of each plate is therefore limited by the position taken by the other plate.
  • Moving plate 32 has a substantially square shape and it is provided with a plurality of bores 35 for securing rotating table 14.
  • Rotating table 14 is internally equipped with a hydraulic or electric driving system for rotating it, also controlled by the numerical control system of the device, and is externally provided with bores 15 for securing a plurality of tools circumferentially distributed on its surface.
  • Fig. 1 shows by way of example a mandrel 16, rotated into its working position, and two riveters 18, 20, arranged at 45° relative to the mandrel.
  • moving plate 32 allows longitudinally displacing the tool being used (mandrel 16 in the drawing), whereas the rotating table allows changing the tool, after having withdrawn the tool being used by moving back moving plate 32.
  • Table 14 is designed to house up to 8 tools. Yet generally it is sufficient to use a single mandrel, in which it is possible to automatically change the boring drills to make holes of different diameters, and one or two riveters for applying rivets of different sizes.
  • Fig. 3 is a side view of the double slide 10.
  • electric motor 40 has been removed in that Figure, to show the details said motor hides.
  • the Figure shows means 42, 44 for coupling the slide to arm 2, moving plates 30, 32 and rubber bellows 37, 39, 41 protecting the internal slide members while allowing at the same time plates 30, 32 to displace longitudinally of the slide.
  • Fig. 4 shows instead in detail the lower end of slide 10, with bearing foot 12 secured to plate 30 thereof, and a device 48 for supplying a bonding agent in correspondence of the bore made by mandrel 16, before the riveting operation.
  • Bearing foot 12 forms, at its lower end, an internally hollow circular portion 12a, the internal cavity of which is connected with device 60 for aspirating boring chips (a flexible duct connected with a suitable aspirator).
  • the internal diameter of input opening 12b giving access to hollow circular portion 12a of the foot slightly exceeds the external diameter of chuck 17 of mandrel 16: thus, during boring, an air-tight sealed chamber is formed that favours chip aspiration by chip aspirating device 60.
  • Device 48 for supplying a bonding agent is coupled with bearing foot 12 through an actuating system, such as an oil-pressure piston, allowing its reciprocation for moving close to and away from the hole.
  • actuating system such as an oil-pressure piston
  • device 48 for supplying a bonding agent is moved close to and away from the hole during a rotation phase of rotating table 14, whereby the dead times during tool change are exploited.
  • Fig. 5 shows in greater detail hollow circular portion 12a of bearing foot 12, which presses panel 5 against stringer 6a, and the lower end of device 48 for supplying a bonding agent in its lowered position, when it is brought in correspondence with hole 52.
  • a channel 50 through which the bonding agent passes is provided inside device 48.
  • Channel 50 in its end portion, is divided into two or more oblique channels 50a, 50b, preferably three channels arranged at 120° relative to each other, favouring a homogeneous distribution of the bonding agent onto the internal hole walls.
  • the tip of device 48 i. e. the portion where oblique channels 50a, 50b are provided, is so shaped that it becomes positioned onto hole 52 as if it would arrive in axial alignment therewith, notwithstanding the oblique approaching movement.
  • a hole and a countersink can be obtained with minimum errors relative to the required specifications. It is important that especially the countersink has minimum tolerance, since the head of rivet 51, at the riveting end, must be at the same level as the external surface of panel 6. The depths of the hole and the countersink are kept constant in that mandrel 16, before starting boring, is positioned again, thereby recovering possible errors with respect to the theoretical zero, based on the actual point where foot 12 is located when it is pressed against panel 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Connection Of Plates (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Panels For Use In Building Construction (AREA)
  • Drilling And Boring (AREA)
  • Automatic Assembly (AREA)

Claims (12)

  1. Dispositif pour riveter un élément de renforcement longitudinal (6a) sur un panneau d'aluminium (6), le dispositif étant du type incluant un premier bras robotisé (2), doté d'au moins un outil de rivetage (18, 20), et un second bras robotisé (4), doté d'au moins un outil de soutien (22), le dispositif étant caractérisé en ce qu'il comporte une double glissière alimentée électriquement (10) couplée audit premier bras robotisé (2), ladite glissière alimentée électriquement étant dotée d'une première plaque mobile (32) sur laquelle un pied de support (12) est fixé, lequel pied est disposé pour exercer une pression programmable, en opposition avec ledit second bras robotisé (4), pour maintenir ensemble ledit panneau et ledit élément de renforcement longitudinal (6a) , et d'une seconde plaque mobile (30) sur laquelle une table tournante (14) est montée, laquelle table loge une pluralité d'outils (16, 18, 20) qui sont interchangeables par la rotation de ladite table (14), lesdites première (30) et seconde (32) plaques mobiles pouvant fonctionner de façon indépendante.
  2. Dispositif selon la revendication 1, caractérisé en ce que les première (30) et seconde (32) plaques mobiles coulissent sur des glissières de guidage communes (24, 26).
  3. Dispositif selon la revendication 2, caractérisé en ce que chaque plaque mobile (30, 32) est couplée avec un arbre fileté (36, 34) qui est entraíné au moyen d'un moteur électrique respectif (40, 38).
  4. Dispositif selon la revendication 3, caractérisé en ce que chaque arbre fileté (36, 34) est couplé avec le moteur électrique associé (40, 38) au moyen d'une courroie (45, 46).
  5. Dispositif selon la revendication 4, caractérisé en ce que ladite table tournante (14) reçoit un mandrin (16) agencé pour faire un trou (52) dans ledit panneau (6) et dans ledit élément de renforcement longitudinal (6a), et au moins une riveteuse (18) agencée pour introduire et ensuite poser à froid un rivet dans ledit trou (52).
  6. Dispositif selon la revendication 5, caractérisé en ce que ladite table tournante (14) loge une seconde riveteuse (20) disposée pour introduire et pour poser à froid des rivets présentant des diamètres différents par rapport à ladite première riveteuse (18).
  7. Dispositif selon la revendication 6, caractérisé en ce que ledit mandrin (16) est doté d'un dispositif de serrage (17) agencé pour recevoir des mèches de différents diamètres, automatiquement interchangeables.
  8. Dispositif selon la revendication 1, caractérisé en ce que ledit pied de support (12) forme, au niveau de son extrémité, une partie circulaire creuse à l'intérieur (12a), dont la cavité interne est connectée à un dispositif (50) servant à aspirer les copeaux de perçage.
  9. Dispositif selon les revendications 8 et 5 considérées ensemble, caractérisé en ce que ledit mandrin (16) est doté d'un dispositif de serrage (17) et dans lequel le diamètre interne de l'ouverture d'entrée (12b) de ladite partie circulaire creuse (12a) est légèrement supérieure au diamètre externe dudit dispositif de serrage (17) de sorte que, pendant le perçage, une chambre hermétique, étanche à l'air, se forme dans ledit creux, favorisant l'aspiration des copeaux par ledit dispositif d'aspiration (50).
  10. Dispositif selon la revendication 5, caractérisé par le fait de comprendre, en plus, un dispositif (48) pour fournir un agent de liaison au niveau du trou (52) percé par le mandrin (16), ledit dispositif (48) servant à fournir un agent de liaison étant couplé audit pied de support (12) par un système de mise en action (46), permettant son mouvement de va-et-vient pour se déplacer à proximité et à distance dudit trou (52).
  11. Dispositif selon la revendication 10, caractérisé en ce que ledit dispositif (48) servant à fournir un agent de liaison est adapté pour être amené à proximité dudit trou pendant une phase de rotation de ladite table tournante (14) pour un changement d'outil.
  12. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, en fonctionnement, lorsque ledit pied de support (12) exerce la pression programmée contre ledit panneau (6), ladite seconde plaque mobile (32) est déplacée pour ramener lesdits outils (16, 18, 20) à la distance programmée relative par rapport au pied de support (12).
EP02009853A 2002-01-11 2002-05-02 Appareil pour riveter des éléments de renforcement longitudinaux sur des panneaux en aluminium Expired - Lifetime EP1329270B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2002TO000030A ITTO20020030A1 (it) 2002-01-11 2002-01-11 Dispositivo per la chiodatura di elementi longitudinali di rinforzo su pannelli di alluminio.
ITTO20020030 2002-01-11

Publications (2)

Publication Number Publication Date
EP1329270A1 EP1329270A1 (fr) 2003-07-23
EP1329270B1 true EP1329270B1 (fr) 2004-08-25

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EP02009853A Expired - Lifetime EP1329270B1 (fr) 2002-01-11 2002-05-02 Appareil pour riveter des éléments de renforcement longitudinaux sur des panneaux en aluminium

Country Status (5)

Country Link
EP (1) EP1329270B1 (fr)
AT (1) ATE274385T1 (fr)
DE (1) DE60201065T2 (fr)
ES (1) ES2225686T3 (fr)
IT (1) ITTO20020030A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004006407A1 (de) * 2004-02-10 2005-09-01 Daimlerchrysler Ag Vorrichtung zum automatisierten Setzen eines Blindniets
BE1016957A6 (fr) * 2006-03-27 2007-10-02 Sonaca Sociutu Anonyme Dispositif et procede pour l'assemblage par rivetage de toles.
ITTO20060581A1 (it) 2006-08-04 2008-02-05 Bruno Bisiach Dispositivo e metodo di lavorazione di un pezzo da lavorare, quale per esempio una struttura a guscio di un velivolo
ITTO20070395A1 (it) 2007-06-06 2008-12-07 Bruno Bisiach Metodo di controllo di una macchina trapanatrice ed apparato che realizza detto metodo.
DE102009012154B4 (de) * 2009-03-06 2011-05-05 Thyssenkrupp Drauz Nothelfer Gmbh Bearbeitungseinrichtung und Verfahren zur automatisierten Bestimmung eines Gesamtverfahrwegs einer Bearbeitungseinrichtung zur Gewährleistung einer vorbestimmten Überarbeitungstiefe
US10525524B2 (en) * 2014-07-09 2020-01-07 The Boeing Company Dual-interface coupler

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3535761C1 (de) * 1985-10-07 1987-03-26 Messerschmitt Boelkow Blohm Nietautomat
SE454956B (sv) * 1986-10-15 1988-06-13 Saab Scania Ab Anordning for nitning av skivformade material
DE3715927A1 (de) * 1987-05-13 1988-12-01 Messerschmitt Boelkow Blohm Vorrichtung und verfahren zum automatisch gesteuerten bohrsenken und vernieten mit hilfe eines wenigstens zweiteiligen verbindungselementes
AU6034299A (en) * 1998-09-11 2000-04-03 General Electro Mechanical Corporation Rotary turret head apparatus

Also Published As

Publication number Publication date
ITTO20020030A1 (it) 2003-07-11
DE60201065D1 (de) 2004-09-30
ES2225686T3 (es) 2005-03-16
ATE274385T1 (de) 2004-09-15
ITTO20020030A0 (it) 2002-01-11
DE60201065T2 (de) 2005-09-01
EP1329270A1 (fr) 2003-07-23

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