EP2862676B1 - Tool for installing an element to be crimped - Google Patents

Tool for installing an element to be crimped Download PDF

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Publication number
EP2862676B1
EP2862676B1 EP14188124.3A EP14188124A EP2862676B1 EP 2862676 B1 EP2862676 B1 EP 2862676B1 EP 14188124 A EP14188124 A EP 14188124A EP 2862676 B1 EP2862676 B1 EP 2862676B1
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EP
European Patent Office
Prior art keywords
drive shaft
tool according
positioning tool
pull rod
traction rod
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.)
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Application number
EP14188124.3A
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German (de)
French (fr)
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EP2862676A1 (en
Inventor
Frédéric Simonet
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.)
Bollhoff Otalu SA
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Bollhoff Otalu SA
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Publication date
Application filed by Bollhoff Otalu SA filed Critical Bollhoff Otalu SA
Publication of EP2862676A1 publication Critical patent/EP2862676A1/en
Application granted granted Critical
Publication of EP2862676B1 publication Critical patent/EP2862676B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0007—Tools for fixing internally screw-threaded tubular fasteners
    • B25B27/0014—Tools for fixing internally screw-threaded tubular fasteners motor-driven

Definitions

  • the invention relates to the nose of a crimp element, in particular an apparatus with a traction screw.
  • crimping elements are common in industry, and particularly in the fields of automotive, aeronautical or naval construction.
  • a wide variety of crimp elements such as crimp nuts is used.
  • the crimping of elements is generally carried out by means of portable laying tools using oleopneumatic, electrical or other power.
  • This type of laying tool is provided with a pull rod intended to be screwed inside or around the element to be crimped.
  • the tool is also provided with a rotation drive system, and a traction system for performing the screwing and crimping of the crimping element.
  • the barrel of the nut is first inserted through a hole in the plate.
  • the pulling rod of the tool advantageously comprising an external thread, is then screwed into the barrel of the nut.
  • a traction system integrated into the tool allows the crimping of the crimping element. This step involves pulling the barrel of the nut towards the plate so as to form a bead against the plate to crimp the nut.
  • the pull rod is then unscrewed, and the assembly including the nut and the plate is ready to be assembled to an external element.
  • the pull rod is easily interchangeable to fit the tapping or threading of the crimp element, as well as its diameter and length.
  • the installation tools are provided with a chuck that can be unlocked by means of a wrench in order to change the pull rod.
  • a wrench in order to change the pull rod.
  • An object of the invention is to provide a tool comprising a laying nose provided with a pull rod that can easily be changed without specific tools.
  • the chamber is configured to house the trailing end of the pull rod and the front end of the drive shaft.
  • the front end of the drive shaft has a groove having a front zone having at least one lateral dimension smaller than a zone rear of the groove, while the pulling rod has a projecting portion having a shape complementary to the rear zone of the groove, and a flat shape complementary to the front zone of the groove.
  • the protruding portion can be disengaged from the pull rod.
  • the projecting portion may advantageously comprise a hole inside which the rear end of the pull rod can be inserted.
  • the laying tool may comprise a cohesive member configured to prevent relative movement of the pull rod relative to the drive shaft.
  • the tool can also be provided with a traction drive mechanism.
  • the delivery nose may comprise a carcass inside which the chamber is located, an anvil positioned at a front end of the nose, and adjustment means placed between the carcass and the anvil and configured to lock the relative position of the anvil relative to the carcass.
  • the adjustment means may for example be a clamping nut.
  • the crimping tool is provided with a body 1 to which is fixed a laying nose 2 may be formed by one or more parts.
  • the laying nose 2 defines an open chamber 3 which opens at both ends to allow the passage of a pull rod 4.
  • the nose 2 has a front end which is the end lying on the side of the work, and a rear end on the opposite side to the work area. Each of these two ends has an orifice connected to the chamber 3 to allow the passage of the pull rod 4 during its assembly or disassembly.
  • the pull rod 4 is configured to be mechanically coupled with the crimp member. In this way, the movements and forces made by the pull rod 4 are transferred to the crimp element.
  • the pull rod 4 is configured to be screwed into or around the crimping element and then unscrewed when crimping is performed.
  • the pull rod 4 may comprise at its front end 4a is a thread or a tapping, or both to allow the crimping of two types of crimping elements having different properties.
  • the pull rod 4 also has a rear end 4b mechanically connected to a drive shaft 5. In this way, the movements and forces produced by the drive shaft 5 are transferred to the pull rod 4.
  • the traction rod 4 and the drive shaft 5 are mounted coaxially so as to have the same axis of rotation which results in an autorotation movement for these two elements.
  • the slide connection can be realized by means of recess mounting, dovetail or any other suitable means.
  • the slide connection is placed inside the chamber that blocks this connection. In this way, the separation of the pull rod 4 with the drive shaft 5 can be done only if the nose 2 is removed.
  • the front end 5a of the drive shaft 5 is provided with a groove 5b cooperating with a projecting portion 4c of the rear end 4b of the pull rod 4.
  • the form of the groove 5b is devoid of axis of symmetry along the autorotation axis of the drive shaft 5 to ensure a transfer of forces and rotational movements.
  • the shapes of the protruding portion 4c and the groove 5b are advantageously devoid of symmetry of revolution, so as to prevent any inadvertent rotation movement of the pull rod 4 not generated by the drive mechanism during crimping.
  • the groove 5b is preferably centered on the axis of attachment of the crimp member, to fix it perfectly on its axis.
  • the projecting portion 4c fits without play in the groove 5b in order to make the assembly more reliable.
  • the groove 5b has end stops 5c.
  • the end stops 5c maintain the projecting portion 4c inside the groove 5b.
  • a stop is necessary to provide the tensile force on a portion of the crimp member.
  • another end stop 5d is present to define the opposite face of the groove in the drive shaft 5 and thus limit the translational movement of the pull rod.
  • the groove 5b and the projecting portion 4c are configured to fit without play.
  • the output of the projecting portion 4c and the groove 5b may comprise two zones having different dimensions.
  • a first zone at the front may for example have at least one reduced lateral dimension with respect to a second zone located at the rear of the groove 5b along the axis of rotation of the shaft. This prevents the projecting portion 4c from coming out of the groove 5b.
  • the difference in size is measured perpendicular to the axis of rotation of the drive shaft 5.
  • An advantageous embodiment may consist in providing a pull rod 4 comprising two removable elements.
  • a first element is formed by the projecting portion 4c.
  • a second element is formed by the rod that is coupled to the element to be crimped.
  • the removable projecting portion 4c can be placed in the rear zone of the groove 5b, and the pull rod 4 comprises a flat 4d whose shape is complementary to the front zone of the groove 5b.
  • the projecting portion 4c When the projecting portion 4c is removable, it advantageously comprises a blind hole or opening into which the pull rod 4 can be inserted.
  • the two parts can be secured by any suitable means, for example by screwing the rear end 4b of the pull rod 4 into the hole of the projecting portion 4c.
  • the assembly is then inserted from the top of the groove 5b.
  • the hole can advantageously be filled by a cohesive element such as glue or a Teflon seal. This also helps dampen vibrations and increase axial compliance.
  • the rod 4a can be screwed onto the protruding portion 4c without risk of separation in case of rotation because the two elements have a flat or any other structure that prevents a rotation movement different from that printed by the drive shaft.
  • the pull rod 4 may be fully integral.
  • a cohesive element can also be used to directly connect the traction rod 4 with the drive shaft 5.
  • the drive shaft 5 is actuated by a traction drive mechanism and a rotational drive mechanism positioned within the body 1 of the setting tool.
  • the rotational drive mechanism serves to secure the pull rod 4 to the crimp member, while the pull drive mechanism pulls the crimp member to form a bead.
  • the laying tool may comprise a single device acting both as a rotary drive mechanism and a traction drive mechanism.
  • This device will be called a drive mechanism later that it is configured to provide rotation or rotation and traction.
  • the drive mechanism is powered by a power supply system housed in the body 1 and can for example be a pneumatic system comprising an inlet 6 and an outlet 7.
  • the drive mechanism is controlled by means of a control device configured to actuate the pneumatic system in response to user pressure on a trigger 8.
  • the user can for example press the trigger 8 halfway to achieve the screwing of the drive. pull rod 4 on the crimp element.
  • the drive mechanism then transmits a rotational movement to the drive shaft 5, the latter then driving the pull rod 4 to rotate at the same speed.
  • the user can then fully press the trigger 8 to crimp the crimp element.
  • the drive mechanism then translates the drive shaft 5, which has the effect of translating the pull rod 4 and perform the crimping.
  • a simple pressure of the user on the trigger 8 allows in a first time to screw the pull rod 4 on the element to be crimped, then to achieve the crimping.
  • the laying nose 2 comprises a carcass 9, the inner portion of which at least partially defines the chamber 3.
  • the laying nose 2 is fixed to the body 1 and can be detached from the body without the need to touch the pull rod 4.
  • the nose 2 is decoupled from the movements of the drive shaft 5.
  • the pull rod 4 moves freely inside the laying nose 2.
  • the carcass 9 has a rear portion 9a fitted inside the body 1, and a collar 9b intended to be placed in abutment against the front face of the body 1.
  • the carcass 9 can be inserted into the body 1 by sliding, screwing or other means, and be fixed to the body 1 by means of a mechanical holding device 10.
  • the latter comprises a through hole 10a located on the part before the body 1, a blind hole 10b located in the rear portion 9a of the carcass 9 located opposite the through hole 10a, and a holding member 10c inserted into the through hole 10a and abutted at the bottom of the blind hole 10b.
  • the holding member 10c is removable and may for example be a screw or a ball screw. The choice of a ball screw is particularly advisable because this type of element can greatly reduce friction and thus limit the wear of the through holes 10a and blind 10b.
  • the nose 2 is also provided with an anvil 11 attached to a front portion 9c of the carcass.
  • the anvil 11 has a rear portion 11a having a section of width identical to a hole 9d of the front portion 9c of the carcass.
  • the rear portion 11a is advantageously threaded and the hole 9d tapped, to allow the screwing of the anvil 11 in the carcass 9. In this way, the anvil 11 is mounted to move on the carcass 9, which limits the displacement of the element to be crimped and therefore the deformation during crimping.
  • This configuration makes it possible to use a traction rod 4 of given length over a larger range by moving the position of the anvil 11. On the other hand, if the anvil 11 is fixed, it is preferable to have traction rods. 4 having different lengths to hold the dimensions of the parts to be crimped.
  • the anvil 11 also comprises a chamfered front portion 11b to better withstand the force involved during crimping, and an axial opening 11c to allow the passage of the pull rod 4 protruding from the front face of the nose 2.
  • the axial opening 11 ca advantageously a complementary shape to that of the pull rod 4, to prevent inadvertent movement of the pull rod 4 relative to the axis of attachment of the crimping element. Therefore, a specific anvil 11 for each pull rod diameter 4 can be provided if the pull rod performs the tapping coupling. But it is also possible to provide a mandrel-like anvil 11 that can be tightened by means of a suitable key.
  • the laying nose 2 is finally provided with a setting means 12 (cf. figures 1b and 2 positioned between the carcass 9 and the anvil 11.
  • This may for example be a clamping nut, intended to block the position of the rear portion 11a of the anvil 11 in the hole 9d of the carcass 9
  • the adjusting means 12 could be a set of shims of varying thickness.
  • the carcass 9 and the anvil 11 may be monoblock.
  • this embodiment offers fewer adjustment possibilities in the dimensions of the pull rod 4 and / or crimping elements.
  • the structure of the laying tool has the advantage of allowing a change of the pull rod 4 without the need for special tools.
  • the laying nose 2 can easily be removed by first unscrewing the anvil 11 of the hole 9d of the carcass 9.
  • the holding member 10c can then be removed from the holes crossing 10a and blind 10b. This makes it possible to remove the carcass 9 from the body 1 of the tool in order to have access to the pull rod 4.
  • the pull rod 4 has a removable projecting portion 4c it is possible to unscrew the pull rod 4 of the projecting portion 4c, and to position another pull rod 4 on the same projecting portion 4c.
  • the projecting portion 4c is integral with the pull rod 4, it is the assembly consisting of the pull rod 4 and the projecting portion 4c which must be interchanged.
  • the nose can be reassembled. For this, it is necessary to start by putting the carcass 9 back on the body 1 and to secure them by means of the mechanical holding device 10.
  • the adjusting means 12 is then positioned against the front face of the carcass 9, then an anvil 11 adapted to the new pull rod 4 is screwed on the carcass 9. It is then possible to crimp an element having characteristics different from the initial crimp element.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention est relative au nez de pose d'un élément à sertir, en particulier un appareil doté d'une vis de traction.The invention relates to the nose of a crimp element, in particular an apparatus with a traction screw.

État de la techniqueState of the art

L'usage d'éléments à sertir est courant dans l'industrie, et notamment dans les domaines de la construction automobile, aéronautique ou navale. Une grande variété d'éléments à sertir tels que des écrous à sertir est utilisée.The use of crimping elements is common in industry, and particularly in the fields of automotive, aeronautical or naval construction. A wide variety of crimp elements such as crimp nuts is used.

Le sertissage d'éléments est généralement réalisé au moyen d'outils de pose portatifs utilisant une puissance oléopneumatique, électrique ou autre. Ce type d'outil de pose est doté d'une tige de traction destinée à être vissée à l'intérieur ou autour de l'élément à sertir. L'outil est également pourvu d'un système d'entraînement en rotation, et d'un système de traction permettant de réaliser le vissage et le sertissage de l'élément à sertir.The crimping of elements is generally carried out by means of portable laying tools using oleopneumatic, electrical or other power. This type of laying tool is provided with a pull rod intended to be screwed inside or around the element to be crimped. The tool is also provided with a rotation drive system, and a traction system for performing the screwing and crimping of the crimping element.

Plus précisément, pour sertir un élément tel qu'un écrou sur une plaque, le fût de l'écrou est tout d'abord inséré à travers un trou de la plaque. La tige de traction de l'outil, comprenant avantageusement un filetage externe, est alors vissée dans le fût de l'écrou. Lorsque la tige de traction est entièrement vissée, un système de traction intégré à l'outil permet de réaliser le sertissage de l'élément à sertir. Cette étape consiste à tracter le fût de l'écrou en direction de la plaque de manière à former un bourrelet contre la plaque afin de sertir l'écrou. La tige de traction est ensuite dévissée, et l'ensemble comprenant l'écrou et la plaque est prêt à être assemblé à un élément extérieur.More specifically, for crimping an element such as a nut on a plate, the barrel of the nut is first inserted through a hole in the plate. The pulling rod of the tool, advantageously comprising an external thread, is then screwed into the barrel of the nut. When the pull rod is fully screwed, a traction system integrated into the tool allows the crimping of the crimping element. This step involves pulling the barrel of the nut towards the plate so as to form a bead against the plate to crimp the nut. The pull rod is then unscrewed, and the assembly including the nut and the plate is ready to be assembled to an external element.

Le document US 2005/189145 divulgue un outil de pose selon la préambule de la revendication 1.The document US 2005/189145 discloses a laying tool according to the preamble of claim 1.

Pour que l'outil de pose soit polyvalent, il est important que la tige de traction soit facilement interchangeable afin de s'adapter au taraudage ou au filetage de l'élément à sertir, ainsi qu'à son diamètre et à sa longueur.For the installation tool to be versatile, it is important that the pull rod is easily interchangeable to fit the tapping or threading of the crimp element, as well as its diameter and length.

Généralement, les outils de pose sont dotés d'un mandrin pouvant être déverrouillé au moyen d'une clé afin de changer la tige de traction. Toutefois cela peut poser problème lorsque la clé n'est pas à portée de main.Generally, the installation tools are provided with a chuck that can be unlocked by means of a wrench in order to change the pull rod. However this can be problematic when the key is not at hand.

Objet de l'inventionObject of the invention

Un objet de l'invention est de réaliser un outil comprenant un nez de pose pourvu d'une tige de traction pouvant facilement être changée sans outillage spécifique.An object of the invention is to provide a tool comprising a laying nose provided with a pull rod that can easily be changed without specific tools.

La solution du problème est réalisée par un outil selon la revendication 1.The problem is solved by a tool according to claim 1.

La chambre est configurée pour loger l'extrémité arrière de la tige de traction et l'extrémité avant de l'arbre d'entraînement. Structurellement, l'extrémité avant de l'arbre d'entraînement comporte une rainure dotée d'une zone avant ayant au moins une dimension latérale inférieure à celle d'une zone arrière de la rainure, tandis que la tige de traction comporte une portion en saillie ayant une forme complémentaire de la zone arrière de la rainure, et un méplat de forme complémentaire de la zone avant de la rainure.The chamber is configured to house the trailing end of the pull rod and the front end of the drive shaft. Structurally, the front end of the drive shaft has a groove having a front zone having at least one lateral dimension smaller than a zone rear of the groove, while the pulling rod has a projecting portion having a shape complementary to the rear zone of the groove, and a flat shape complementary to the front zone of the groove.

Selon un mode de réalisation de l'invention, la portion en saillie peut être désolidarisée de la tige de traction. Dans ce cas, la portion en saillie peut avantageusement comporter un trou à l'intérieur duquel l'extrémité arrière de la tige de traction peut être insérée.According to one embodiment of the invention, the protruding portion can be disengaged from the pull rod. In this case, the projecting portion may advantageously comprise a hole inside which the rear end of the pull rod can be inserted.

Par ailleurs, l'outil de pose peut comprendre un élément de cohésion configuré pour empêcher le mouvement relatif de la tige de traction par rapport à l'arbre d'entraînement.Furthermore, the laying tool may comprise a cohesive member configured to prevent relative movement of the pull rod relative to the drive shaft.

L'outil peut également être pourvu d'un mécanisme d'entraînement en traction.The tool can also be provided with a traction drive mechanism.

Selon un mode de réalisation de l'invention, le nez de pose peut comporter une carcasse à l'intérieur de laquelle se trouve la chambre, une enclume positionnée à une extrémité avant du nez de pose, et des moyens de réglage placés entre la carcasse et l'enclume et configurés pour bloquer la position relative de l'enclume par rapport à la carcasse. Les moyens de réglage peut par exemple être un contre écrou de serrage.According to one embodiment of the invention, the delivery nose may comprise a carcass inside which the chamber is located, an anvil positioned at a front end of the nose, and adjustment means placed between the carcass and the anvil and configured to lock the relative position of the anvil relative to the carcass. The adjustment means may for example be a clamping nut.

Enfin, le dispositif de maintien peut avantageusement comprendre :

  • un trou traversant positionné dans le corps,
  • un trou borgne positionné dans le nez de pose et placé en regard du trou traversant,
  • une vis à bille dans le trou traversant et placée en butée au fond du trou borgne.
Finally, the holding device may advantageously comprise:
  • a through hole positioned in the body,
  • a blind hole positioned in the laying nose and placed opposite the through hole,
  • a ball screw in the through hole and placed in abutment at the bottom of the blind hole.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés aux dessins annexés, dans lesquels :

  • la figure 1a, illustre de façon schématique et en perspective un mode de réalisation particulier d'un outil de pose,
  • la figure 1b est une vue éclatée du nez de pose selon le mode de réalisation présenté à la figure 1 a,
  • la figure 2 est une vue en coupe longitudinale du nez de pose selon le mode de réalisation de la figure 1.
Other advantages and features will emerge more clearly from the following description of particular embodiments of the invention given by way of non-limiting example and represented in the accompanying drawings, in which:
  • the figure 1a , illustrates schematically and in perspective a particular embodiment of a laying tool,
  • the figure 1b is an exploded view of the nose of pose according to the embodiment presented to the figure 1 at,
  • the figure 2 is a longitudinal sectional view of the laying nose according to the embodiment of the figure 1 .

Description détailléedetailed description

Selon un mode de réalisation présenté aux figures 1a, 1b et 2, l'outil de pose d'un élément à sertir est doté d'un corps 1 auquel est fixé un nez de pose 2 pouvant être formé par une ou plusieurs pièces.According to an embodiment presented to Figures 1a, 1b and 2 , the crimping tool is provided with a body 1 to which is fixed a laying nose 2 may be formed by one or more parts.

Le nez de pose 2 définit une chambre 3 ouverte qui débouche aux deux extrémités afin de permettre le passage d'une tige de traction 4. Le nez de pose 2 possède une extrémité avant qui est l'extrémité se trouvant du côté de la zone de travail, et une extrémité arrière se trouvant du côté opposé à la zone de travail. Chacune de ces deux extrémités possède un orifice connecté à la chambre 3 pour permettre le passage de la tige de traction 4 lors de son montage ou son démontage.The laying nose 2 defines an open chamber 3 which opens at both ends to allow the passage of a pull rod 4. The nose 2 has a front end which is the end lying on the side of the work, and a rear end on the opposite side to the work area. Each of these two ends has an orifice connected to the chamber 3 to allow the passage of the pull rod 4 during its assembly or disassembly.

La tige de traction 4 est configurée pour être couplée mécaniquement avec de l'élément à sertir. De cette manière, les mouvements et les efforts réalisés par la tige de traction 4 sont transférés à l'élément à sertir.The pull rod 4 is configured to be mechanically coupled with the crimp member. In this way, the movements and forces made by the pull rod 4 are transferred to the crimp element.

Avantageusement, la tige de traction 4 est configurée pour être vissée dans ou autour de l'élément à sertir puis dévissée lorsque le sertissage est réalisé. Pour cela, la tige de traction 4 peut comprendre à son extrémité avant 4a soit un filetage, soit un taraudage, soit les deux afin de permettre le sertissage de deux types d'éléments à sertir ayant des propriétés différentes.Advantageously, the pull rod 4 is configured to be screwed into or around the crimping element and then unscrewed when crimping is performed. For this, the pull rod 4 may comprise at its front end 4a is a thread or a tapping, or both to allow the crimping of two types of crimping elements having different properties.

La tige de traction 4 comporte également une extrémité arrière 4b connectée mécaniquement à un arbre d'entraînement 5. De cette manière, les mouvements et les efforts réalisés par l'arbre d'entraînement 5 sont transférés la tige de traction 4.The pull rod 4 also has a rear end 4b mechanically connected to a drive shaft 5. In this way, the movements and forces produced by the drive shaft 5 are transferred to the pull rod 4.

La tige de traction 4 et l'arbre d'entraînement 5 sont montés coaxiaux de manière à présenter un même axe de rotation qui se traduit par un mouvement d'autorotation pour ces deux éléments.The traction rod 4 and the drive shaft 5 are mounted coaxially so as to have the same axis of rotation which results in an autorotation movement for these two elements.

Afin de faciliter le montage/démontage de la tige de traction 4 avec l'arbre d'entraînement 5, un montage par liaison glissière est utilisé. De cette manière, il n'y a pas de couplage par vissage qui pourrait entraîner une désolidarisation lors de la rotation de l'arbre d'entraînement 5. Ainsi, le décalage angulaire réalisé par l'arbre d'entraînement 5 se traduit par le même décalage angulaire de la tige de traction 4.In order to facilitate the assembly / disassembly of the pull rod 4 with the drive shaft 5, a slide connection is used. In this way, there is no coupling by screwing which could lead to a separation during rotation of the drive shaft 5. Thus, the angular offset achieved by the drive shaft 5 is reflected in the same angular offset of the pull rod 4.

Le montage par liaison glissière peut être réalisé au moyen d'un montage par embrèvement, par queue d'aronde ou par tout autre moyen adapté.The slide connection can be realized by means of recess mounting, dovetail or any other suitable means.

La liaison glissière est placée à l'intérieur de la chambre qui vient bloquer cette liaison. De cette manière, la désolidarisation de la tige de traction 4 avec l'arbre d'entraînement 5 ne peut se faire que si le nez de pose 2 est retiré.The slide connection is placed inside the chamber that blocks this connection. In this way, the separation of the pull rod 4 with the drive shaft 5 can be done only if the nose 2 is removed.

Dans un mode de réalisation préférentiel, l'extrémité avant 5a de l'arbre d'entraînement 5 est dotée d'une rainure 5b coopérant avec une portion en saillie 4c de l'extrémité arrière 4b de la tige de traction 4. La forme de la rainure 5b est dépourvue d'axe de symétrie selon l'axe d'autorotation de l'arbre d'entraînement 5 afin d'assurer un transfert des efforts et des mouvements en rotation. Les formes de la portion en saillie 4c et de la rainure 5b sont avantageusement dépourvues de symétrie de révolution, de façon à empêcher tout mouvement de rotation intempestif de la tige de traction 4 non généré par le mécanisme d'entraînement lors du sertissage.In a preferred embodiment, the front end 5a of the drive shaft 5 is provided with a groove 5b cooperating with a projecting portion 4c of the rear end 4b of the pull rod 4. The form of the groove 5b is devoid of axis of symmetry along the autorotation axis of the drive shaft 5 to ensure a transfer of forces and rotational movements. The shapes of the protruding portion 4c and the groove 5b are advantageously devoid of symmetry of revolution, so as to prevent any inadvertent rotation movement of the pull rod 4 not generated by the drive mechanism during crimping.

Si l'arbre d'entraînement 5 présente un axe de symétrie, la rainure 5b est avantageusement centrée sur l'axe de fixation de l'élément à sertir, pour fixer ce dernier parfaitement sur son axe.If the drive shaft 5 has an axis of symmetry, the groove 5b is preferably centered on the axis of attachment of the crimp member, to fix it perfectly on its axis.

Dans un mode de réalisation préférentielle, la portion en saillie 4c s'emboîte sans jeu dans la rainure 5b afin de fiabiliser l'assemblage.In a preferred embodiment, the projecting portion 4c fits without play in the groove 5b in order to make the assembly more reliable.

Par ailleurs, pour empêcher un mouvement en translation selon l'axe d'autorotation, la rainure 5b possède des butées de fin de course 5c. Les butées de fin de course 5c maintiennent la portion en saillie 4c à l'intérieur de la rainure 5b. Pour réaliser le sertissage, une butée est nécessaire afin de procurer l'effort de traction sur une partie de l'élément à sertir.Moreover, to prevent translation movement along the autorotation axis, the groove 5b has end stops 5c. The end stops 5c maintain the projecting portion 4c inside the groove 5b. To achieve crimping, a stop is necessary to provide the tensile force on a portion of the crimp member.

De manière avantageuse, une autre butée de fin course 5d est présente pour définir la face opposée de la rainure dans l'arbre d'entraînement 5 et ainsi limiter le mouvement en translation de la tige de traction. Dans un mode de réalisation préférentiel, la rainure 5b et la portion en saillie 4c sont configurées pour s'emboîter sans jeu.Advantageously, another end stop 5d is present to define the opposite face of the groove in the drive shaft 5 and thus limit the translational movement of the pull rod. In a preferred embodiment, the groove 5b and the projecting portion 4c are configured to fit without play.

A titre d'exemple, la sortie de la portion en saillie 4c et la rainure 5b, peut comporter deux zones ayant des dimensions différentes. Une première zone située à l'avant peut par exemple avoir au moins une dimension latérale réduite par rapport à une seconde zone située à l'arrière de la rainure 5b le long de l'axe de rotation de l'arbre. Cela empêche la portion en saillie 4c de sortir de la rainure 5b. La différence de dimension est mesurée perpendiculairement à l'axe de rotation de l'arbre d'entraînement 5.By way of example, the output of the projecting portion 4c and the groove 5b may comprise two zones having different dimensions. A first zone at the front may for example have at least one reduced lateral dimension with respect to a second zone located at the rear of the groove 5b along the axis of rotation of the shaft. This prevents the projecting portion 4c from coming out of the groove 5b. The difference in size is measured perpendicular to the axis of rotation of the drive shaft 5.

Un mode de réalisation avantageux peut consister à prévoir une tige de traction 4 comportant deux éléments démontables. Un premier élément est formé par la portion en saillie 4c. Un deuxième élément est formé par la tige venant se coupler à l'élément à sertir. Prévoir une tige de traction 4 comprenant deux éléments démontables permet de simplifier la réalisation de la pièce, et de limiter les coûts lors des phases de maintenance, puisqu'un seul des deux éléments démontables peut être changé.An advantageous embodiment may consist in providing a pull rod 4 comprising two removable elements. A first element is formed by the projecting portion 4c. A second element is formed by the rod that is coupled to the element to be crimped. Providing a pull rod 4 comprising two removable elements makes it possible to simplify the production of the part, and to limit the costs during the maintenance phases, since only one of the two removable elements can be changed.

A titre d'exemple présenté à la figure 1b, la portion en saillie 4c amovible peut être placée dans la zone arrière de la rainure 5b, et la tige de traction 4 comporte un méplat 4d dont la forme est complémentaire de la zone avant de la rainure 5b.As an example presented to the figure 1b , the removable projecting portion 4c can be placed in the rear zone of the groove 5b, and the pull rod 4 comprises a flat 4d whose shape is complementary to the front zone of the groove 5b.

Lorsque la portion en saillie 4c est amovible, celle-ci comporte avantageusement un trou borgne ou débouchant à l'intérieur duquel la tige de traction 4 peut être insérée. Les deux pièces peuvent être solidarisées par tout moyen adapté, par exemple par vissage de l'extrémité arrière 4b de la tige de traction 4 dans le trou de la portion en saillie 4c. L'ensemble est ensuite inséré depuis la partie supérieure de la rainure 5b. Pour améliorer la connexion entre les deux pièces, le trou peut avantageusement être rempli par un élément de cohésion tel que de la colle ou un joint de téflon. Cela permet également d'amortir les vibrations et d'augmenter la compliance axiale. La tige 4a peut venir se visser sur la portion en saillie 4c sans risque de désolidarisation en cas de rotation car les deux éléments possèdent un méplat ou tout autre structuration qui empêche un mouvement de rotation différent de celui imprimé par l'arbre d'entraînement.When the projecting portion 4c is removable, it advantageously comprises a blind hole or opening into which the pull rod 4 can be inserted. The two parts can be secured by any suitable means, for example by screwing the rear end 4b of the pull rod 4 into the hole of the projecting portion 4c. The assembly is then inserted from the top of the groove 5b. To improve the connection between the two parts, the hole can advantageously be filled by a cohesive element such as glue or a Teflon seal. This also helps dampen vibrations and increase axial compliance. The rod 4a can be screwed onto the protruding portion 4c without risk of separation in case of rotation because the two elements have a flat or any other structure that prevents a rotation movement different from that printed by the drive shaft.

De manière alternative, la tige de traction 4 peut être entièrement monobloc. Dans ce cas, un élément de cohésion peut également être utilisé afin de connecter directement la tige de traction 4 avec l'arbre d'entraînement 5.Alternatively, the pull rod 4 may be fully integral. In this case, a cohesive element can also be used to directly connect the traction rod 4 with the drive shaft 5.

Dans un mode de réalisation alternatif, on peut également envisager de former la rainure dans la tige de traction 4 et de former la portion en saillie sur la face avant de l'arbre d'entraînement 5.In an alternative embodiment, it is also conceivable to form the groove in the traction rod 4 and to form the protruding portion on the front face of the drive shaft 5.

L'arbre d'entraînement 5 est actionné par un mécanisme d'entraînement en traction et par un mécanisme d'entraînement en rotation positionnés à l'intérieur du corps 1 de l'outil de pose.The drive shaft 5 is actuated by a traction drive mechanism and a rotational drive mechanism positioned within the body 1 of the setting tool.

Le mécanisme d'entraînement en rotation sert à solidariser la tige de traction 4 avec l'élément à sertir, tandis que le mécanisme d'entraînement en traction permet de tirer sur l'élément à sertir pour former un bourrelet.The rotational drive mechanism serves to secure the pull rod 4 to the crimp member, while the pull drive mechanism pulls the crimp member to form a bead.

De manière avantageuse, l'outil de pose peut comprendre un dispositif unique jouant à la fois le rôle de mécanisme d'entraînement en rotation et de mécanisme d'entraînement en traction. Ce dispositif sera appelé mécanisme d'entraînement par la suite qu'il soit configuré pour assurer la rotation ou la rotation et la traction.Advantageously, the laying tool may comprise a single device acting both as a rotary drive mechanism and a traction drive mechanism. This device will be called a drive mechanism later that it is configured to provide rotation or rotation and traction.

Le mécanisme d'entraînement est alimenté par un système d'alimentation logé dans le corps 1 et pouvant par exemple être un système pneumatique comprenant une entrée 6 et une sortie 7. Le mécanisme d'entraînement est commandé au moyen d'un dispositif de commande configuré pour actionner le système pneumatique en réponse à une pression de l'utilisateur sur une gâchette 8.The drive mechanism is powered by a power supply system housed in the body 1 and can for example be a pneumatic system comprising an inlet 6 and an outlet 7. The drive mechanism is controlled by means of a control device configured to actuate the pneumatic system in response to user pressure on a trigger 8.

A titre illustratif, lorsque l'outil possède à la fois un mécanisme d'entraînement en rotation et un mécanisme d'entraînement en traction, l'utilisateur peut par exemple presser la gâchette 8 jusqu'à mi-course pour réaliser le vissage de la tige de traction 4 sur l'élément à sertir. Le mécanisme d'entraînement transmet alors un mouvement de rotation à l'arbre d'entraînement 5, ce dernier entraînant alors la tige de traction 4 en rotation à la même vitesse. L'utilisateur peut ensuite appuyer complètement sur la gâchette 8 afin de réaliser le sertissage de l'élément à sertir. Le mécanisme d'entraînement fait alors translater l'arbre d'entraînement 5, ce qui a pour effet de faire translater la tige de traction 4 et de réaliser le sertissage.As an illustration, when the tool has both a rotation drive mechanism and a traction drive mechanism, the user can for example press the trigger 8 halfway to achieve the screwing of the drive. pull rod 4 on the crimp element. The drive mechanism then transmits a rotational movement to the drive shaft 5, the latter then driving the pull rod 4 to rotate at the same speed. The user can then fully press the trigger 8 to crimp the crimp element. The drive mechanism then translates the drive shaft 5, which has the effect of translating the pull rod 4 and perform the crimping.

Si l'outil possède un mécanisme d'entraînement en rotation uniquement, une simple pression de l'utilisateur sur la gâchette 8 permet dans un premier temps de visser la tige de traction 4 sur l'élément à sertir, puis de réaliser le sertissage.If the tool has a drive mechanism in rotation only, a simple pressure of the user on the trigger 8 allows in a first time to screw the pull rod 4 on the element to be crimped, then to achieve the crimping.

Dans le mode de réalisation présenté sur les figures, le nez de pose 2 comprend une carcasse 9 dont la partie intérieure définit au moins partiellement la chambre 3.In the embodiment shown in the figures, the laying nose 2 comprises a carcass 9, the inner portion of which at least partially defines the chamber 3.

Le nez de pose 2 est fixé au corps 1 et peut se désolidariser du corps sans qu'il soit nécessaire de toucher à la tige de traction 4. Le nez de pose 2 est découplé des mouvements de l'arbre d'entraînement 5. Ainsi, la tige de traction 4 se déplace librement à l'intérieur du nez de pose 2.The laying nose 2 is fixed to the body 1 and can be detached from the body without the need to touch the pull rod 4. The nose 2 is decoupled from the movements of the drive shaft 5. Thus , the pull rod 4 moves freely inside the laying nose 2.

Dans l'exemple illustré, la carcasse 9 comporte une partie arrière 9a emmanchée à l'intérieur du corps 1, et un collet 9b destiné à être placé en butée contre la face avant du corps 1.In the example illustrated, the carcass 9 has a rear portion 9a fitted inside the body 1, and a collar 9b intended to be placed in abutment against the front face of the body 1.

La carcasse 9 peut être insérée dans le corps 1 par coulissement, par vissage ou par d'autres moyens, et être fixée au corps 1 au moyen d'un dispositif mécanique de maintien 10. Ce dernier comprend un trou traversant 10a situé sur la partie avant du corps 1, un trou borgne 10b situé dans la partie arrière 9a de la carcasse 9 située en regard du trou traversant 10a, et un élément de maintien 10c inséré dans le trou traversant 10a et placé en butée au fond du trou borgne 10b. L'élément de maintien 10c est amovible et peut par exemple être une vis ou une vis à billes. Le choix d'une vis à billes est particulièrement judicieux car ce type d'élément permet de diminuer fortement les frottements et donc de limiter l'usure des trous traversant 10a et borgne 10b.The carcass 9 can be inserted into the body 1 by sliding, screwing or other means, and be fixed to the body 1 by means of a mechanical holding device 10. The latter comprises a through hole 10a located on the part before the body 1, a blind hole 10b located in the rear portion 9a of the carcass 9 located opposite the through hole 10a, and a holding member 10c inserted into the through hole 10a and abutted at the bottom of the blind hole 10b. The holding member 10c is removable and may for example be a screw or a ball screw. The choice of a ball screw is particularly advisable because this type of element can greatly reduce friction and thus limit the wear of the through holes 10a and blind 10b.

Le nez de pose 2 est également pourvu d'une enclume 11 fixée à une partie avant 9c de la carcasse. Pour cela, l'enclume 11 comporte une partie arrière 11a ayant une section de largeur identique à un trou 9d de la partie avant 9c de la carcasse. La partie arrière 11a est avantageusement filetée et le trou 9d taraudé, pour permettre le vissage de l'enclume 11 dans la carcasse 9. De cette manière, l'enclume 11 est montée mobile sur la carcasse 9, ce qui permet de limiter le déplacement de l'élément à sertir et donc la déformation durant le sertissage.The nose 2 is also provided with an anvil 11 attached to a front portion 9c of the carcass. For this, the anvil 11 has a rear portion 11a having a section of width identical to a hole 9d of the front portion 9c of the carcass. The rear portion 11a is advantageously threaded and the hole 9d tapped, to allow the screwing of the anvil 11 in the carcass 9. In this way, the anvil 11 is mounted to move on the carcass 9, which limits the displacement of the element to be crimped and therefore the deformation during crimping.

Cette configuration permet d'utiliser une tige de traction 4 de longueur donnée sur une plus grande gamme en déplaçant la position de l'enclume 11. En revanche, si l'enclume 11 est fixe, il est préférable d'avoir des tiges de traction 4 ayant des longueurs différentes pour tenir des dimensions des pièces à sertir.This configuration makes it possible to use a traction rod 4 of given length over a larger range by moving the position of the anvil 11. On the other hand, if the anvil 11 is fixed, it is preferable to have traction rods. 4 having different lengths to hold the dimensions of the parts to be crimped.

L'enclume 11 comporte aussi une partie avant 11 b chanfreinée afin de mieux résister à la force impliquée lors du sertissage, et une ouverture axiale 11c afin de permettre le passage de la tige de traction 4 faisant saillie sur la face avant du nez de pose 2. L'ouverture axiale 11 c a avantageusement une forme complémentaire de celle de la tige de traction 4, pour empêcher tout mouvement intempestif de la tige de traction 4 par rapport à l'axe de fixation de l'élément à sertir. Dès lors, une enclume 11 spécifique pour chaque diamètre de tige de traction 4 peut être prévue si la tige de traction réalise le couplage par taraudage. Mais il est également possible de prévoir une enclume 11 analogue à un mandrin pouvant être serré au moyen d'une clé adaptée.The anvil 11 also comprises a chamfered front portion 11b to better withstand the force involved during crimping, and an axial opening 11c to allow the passage of the pull rod 4 protruding from the front face of the nose 2. The axial opening 11 ca advantageously a complementary shape to that of the pull rod 4, to prevent inadvertent movement of the pull rod 4 relative to the axis of attachment of the crimping element. Therefore, a specific anvil 11 for each pull rod diameter 4 can be provided if the pull rod performs the tapping coupling. But it is also possible to provide a mandrel-like anvil 11 that can be tightened by means of a suitable key.

Le nez de pose 2 est enfin doté d'un moyen de réglage 12 (cf. figures 1b et 2) positionné entre la carcasse 9 et l'enclume 11. Celui-ci peut par exemple être un contre-écrou de serrage, destiné à bloquer la position de la partie arrière 11 a de l'enclume 11 dans le trou 9d de la carcasse 9. De cette façon, la longueur de la partie de la tige de traction 4 pouvant être vissée sur l'élément à sertir peut être modifiée, ce qui permet de sertir des éléments dont la tige est plus ou moins longue. De manière alternative, le moyen de réglage 12 pourrait être un jeu de cales d'épaisseurs variables.The laying nose 2 is finally provided with a setting means 12 (cf. figures 1b and 2 positioned between the carcass 9 and the anvil 11. This may for example be a clamping nut, intended to block the position of the rear portion 11a of the anvil 11 in the hole 9d of the carcass 9 In this way, the length of the portion of the pull rod 4 that can be screwed onto the crimp element can be modified, which can be used to crimp elements whose rod is shorter or longer. Alternatively, the adjusting means 12 could be a set of shims of varying thickness.

Dans une variante de réalisation, la carcasse 9 et l'enclume 11 peuvent être monoblocs. Cependant, ce mode de réalisation offre moins de possibilités d'ajustement dans les dimensions de la tige de traction 4 et/ou les éléments à sertir.In an alternative embodiment, the carcass 9 and the anvil 11 may be monoblock. However, this embodiment offers fewer adjustment possibilities in the dimensions of the pull rod 4 and / or crimping elements.

La structure de l'outil de pose présente l'avantage de permettre un changement de la tige de traction 4 sans avoir recours à un outillage particulier.The structure of the laying tool has the advantage of allowing a change of the pull rod 4 without the need for special tools.

En effet, pour changer la tige de traction 4, le nez de pose 2 peut facilement être démonté en dévissant dans un premier temps l'enclume 11 du trou 9d de la carcasse 9. L'élément de maintien 10c peut ensuite être ôté des trous traversant 10a et borgne 10b. Cela permet d'enlever la carcasse 9 du corps 1 de l'outil afin d'avoir accès à la tige de traction 4.Indeed, to change the pull rod 4, the laying nose 2 can easily be removed by first unscrewing the anvil 11 of the hole 9d of the carcass 9. The holding member 10c can then be removed from the holes crossing 10a and blind 10b. This makes it possible to remove the carcass 9 from the body 1 of the tool in order to have access to the pull rod 4.

In suffit alors de déplacer la tige de traction 4 vers le haut afin de la désolidariser de l'arbre d'entraînement 5.In this case, it is sufficient to move the pulling rod 4 upwards in order to disengage it from the drive shaft 5.

Si la tige de traction 4 comporte une portion en saillie 4c amovible il est possible de dévisser la tige de traction 4 de la portion en saillie 4c, et de positionner une autre tige de traction 4 sur la même portion en saillie 4c. A l'inverse, si la portion en saillie 4c est solidaire de la tige de traction 4, c'est l'ensemble composé de la tige de traction 4 et de la portion en saillie 4c qui doit être inter changé.If the pull rod 4 has a removable projecting portion 4c it is possible to unscrew the pull rod 4 of the projecting portion 4c, and to position another pull rod 4 on the same projecting portion 4c. Conversely, if the projecting portion 4c is integral with the pull rod 4, it is the assembly consisting of the pull rod 4 and the projecting portion 4c which must be interchanged.

Une fois la nouvelle tige de traction 4 mise en place dans la rainure 5b, le nez de pose peut être remonté. Pour cela, il faut commencer par remettre la carcasse 9 sur le corps 1 et les solidariser à l'aide du dispositif mécanique de maintien 10. Le moyen de réglage 12 est ensuite positionné contre la face avant de la carcasse 9, puis une enclume 11 adaptée à la nouvelle tige de traction 4 est vissée sur la carcasse 9. Il est alors possible de sertir un élément ayant des caractéristiques différentes de l'élément à sertir initial.Once the new pull rod 4 placed in the groove 5b, the nose can be reassembled. For this, it is necessary to start by putting the carcass 9 back on the body 1 and to secure them by means of the mechanical holding device 10. The adjusting means 12 is then positioned against the front face of the carcass 9, then an anvil 11 adapted to the new pull rod 4 is screwed on the carcass 9. It is then possible to crimp an element having characteristics different from the initial crimp element.

Claims (10)

  1. A positioning tool of a part to be crimped, comprising:
    • a body (1) comprising at least a drive mechanism for driving in rotation a drive shaft (5) connected to a traction rod (4) designed to be screwed onto the part to be crimped, the drive shaft (5) and traction rod (4) being positioned so as to ensure self-rotation of the part to be crimped,
    • a positioning nose (2) comprising a rear end fixed to the body (1), the positioning nose (2) internally delineating an opening chamber (3) opening out at both ends,
    characterized in that
    • the front end of the drive shaft (5) and the rear end of the traction rod (4) are configured to define a slide link so that rotation of the drive shaft causes rotation of the traction rod,
    • the chamber (3) is configured to house the rear end of the traction rod (4) and the front end of the drive shaft (5) and to block said slide link.
  2. The positioning tool according to claim 1, wherein the drive shaft (5) comprises a groove (5b) provided with a front area having at least one lateral dimension smaller than that of a rear area of the groove (5b).
  3. The positioning tool according to either one of claims 1 or 2, wherein the traction rod (4) comprises a salient portion (4c) having a complementary shape to the rear area of the groove (5b), and a flat section (4d) the shape of which is complementary to the front area of the groove (5b).
  4. The positioning tool according to any one of claims 1 to 3, wherein the salient portion (4c) can be separated from the traction rod (4).
  5. The positioning tool according to claim 4, wherein the salient portion (4c) comprises a hole inside which the rear end (4b) of the traction rod (4) can be inserted.
  6. The positioning tool according to any one of claims 1 to 5, comprising a cohesion part configured to prevent relative movement of the traction rod (4) with respect to the drive shaft (5).
  7. The positioning tool according to any one of claims 1 to 6, further comprising a mechanism for driving in traction.
  8. The positioning tool according to any one of claims 1 to 7, wherein the positioning nose (2) comprises a shell (9) inside which there are located the chamber (3), an anvil (11) positioned at a front end of the positioning nose (2), and adjustment means (12) placed between the shell (9) and the anvil (11) and configured to block the relative position of the anvil (11) with respect to the shell (9).
  9. The positioning tool according to claim 8, wherein the adjustment means (12) are a locknut.
  10. The positioning tool according to any one of claims 1 to 9, wherein the mechanical securing device comprises:
    • a pass-through hole (10a) positioned in the body (1),
    • a blind hole (10b) positioned in the positioning nose (2) and placed facing the pass-through hole (10a),
    • a securing part (10c) inserted in the pass-through hole (10a) and placed against the stop formed by the bottom of the blind hole (10b).
EP14188124.3A 2013-10-16 2014-10-08 Tool for installing an element to be crimped Active EP2862676B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1302400A FR3011759B1 (en) 2013-10-16 2013-10-16 TOOL FOR INSTALLING A CRYING MEMBER

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EP2862676A1 EP2862676A1 (en) 2015-04-22
EP2862676B1 true EP2862676B1 (en) 2016-06-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11673243B2 (en) 2018-09-05 2023-06-13 Milwaukee Electric Tool Corporation Blind rivet nut-setting tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3052694B1 (en) 2016-06-16 2019-02-01 Bollhoff Otalu S.A. RAPID DISASSEMBLY INSTALLATION TOOL FOR CRIMPING ELEMENT
WO2023242380A1 (en) * 2022-06-16 2023-12-21 Newfrey Llc Transfer station

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7146698B2 (en) * 2002-02-18 2006-12-12 Masterfix Products B.V. Hand-held riveting tool
FR2931716B1 (en) * 2008-06-03 2010-06-18 Bollhoff Otalu Sa APPARATUS FOR THE INSTALLATION OF A CRYING MEMBER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11673243B2 (en) 2018-09-05 2023-06-13 Milwaukee Electric Tool Corporation Blind rivet nut-setting tool

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Publication number Publication date
EP2862676A1 (en) 2015-04-22
FR3011759A1 (en) 2015-04-17
FR3011759B1 (en) 2015-12-11

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