EP3287239B1 - Impact tool provided with a guide tip - Google Patents

Impact tool provided with a guide tip Download PDF

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Publication number
EP3287239B1
EP3287239B1 EP17182407.1A EP17182407A EP3287239B1 EP 3287239 B1 EP3287239 B1 EP 3287239B1 EP 17182407 A EP17182407 A EP 17182407A EP 3287239 B1 EP3287239 B1 EP 3287239B1
Authority
EP
European Patent Office
Prior art keywords
impact tool
face
guide
rod
guide tip
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.)
Active
Application number
EP17182407.1A
Other languages
German (de)
French (fr)
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EP3287239A1 (en
Inventor
Gilles ECHASSERIEAU
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.)
Airbus Operations SAS
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Airbus Operations SAS
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Filing date
Publication date
Application filed by Airbus Operations SAS filed Critical Airbus Operations SAS
Publication of EP3287239A1 publication Critical patent/EP3287239A1/en
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Publication of EP3287239B1 publication Critical patent/EP3287239B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D5/00—Centre punches
    • B25D5/02—Automatic centre punches
    • 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
    • B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
    • B21J15/50—Removing or cutting devices for rivets
    • 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
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/04—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing keys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D5/00—Centre punches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/231—Sleeve details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs

Definitions

  • the present invention relates to an impact tool according to the preamble of claim 1 equipped with a guide tip.
  • a striking tool is known from US 2002/148120 A1 .
  • a striking tool is understood to mean a tool such as a pin punch or a punch, for example, used to extract a fastener such as a rivet or a screw for example, introduced into a hole of one piece with a tight fit.
  • a fastener such as a rivet or a screw for example, introduced into a hole of one piece with a tight fit.
  • the subject of the present invention is a striking tool according to claim 1.
  • the preferred embodiments are defined by the dependent claims.
  • a striking tool comprises a body 10 extended by a straight rod 12.
  • the body 10 comprises, opposite the rod 12, a striking face 14 and the rod 12 comprises a free end 16 configured to bear against a binding to be extracted.
  • the body 10 of the impact tool can be inserted at a first end of a jet 18, as shown in figure figure 1 .
  • a large free space is necessary around the binding in order to strike the hammer directly on the striking face 14 or on the second end 20 of the jet 18.
  • the percussion system comprises a striker, a weight, a first compression spring which pushes the striker towards the rod and a second compression spring which pushes the weight towards the striker.
  • the striker comprises a rear end oriented towards the weight.
  • the weight includes a housing configured to house the rear end of the striker.
  • the present invention aims to remedy the drawbacks of the prior art.
  • the invention relates to a striking tool for extracting an element to be struck from a hole in a part, said striking tool comprising a body and a rod oriented in a first direction and which comprises a free end configured to cooperate with the element to be struck.
  • the striking tool comprises a guide tip which comprises a guide with a duct which extends from a first end face to a second end face configured to bear against the workpiece, said conduit comprising a first portion which opens out at the level of the first end face and which is configured to house the body of the tool to be struck and allow a translational movement of said body of the tool to be struck relative to the guide according to the first direction between a rest position in which the shank of the striking tool is positioned inside the conduit of the guide tip and an active position in which the shank of the striking tool protrudes from to the second end face of the guide tip.
  • This configuration makes it possible to limit the risks of damage to the part because the second end face of the guide tip is in contact with the part.
  • the guide tip comprises two stops for limiting the translational movement of the body of the tool to be struck, a first stop configured to immobilize the body of the tool to be struck in the position of. rest and a second stop configured to immobilize the body of the tool to be struck in the active position.
  • the guide further comprises at least one oblong lumen which has a determined length such that the first end of the oblong lumen forms the first stop which corresponds to the rest position and the second end of the oblong lumen forms the second stop which corresponds to the active position.
  • the striking tool comprises a compression spring configured to push the body of the striking tool into the rest position.
  • the second end face is planar and disposed in a plane perpendicular to the first direction.
  • the second end face of the guide end piece comprises shapes which cooperate with the element to be struck in order to immobilize the guide end piece.
  • the duct comprises a second portion which opens out at the level of the second end face and which is configured to house part of the element to be to hit. According to a preferred embodiment, this second portion has a section substantially equal to a section of the element to be struck.
  • the second end face of the guide comprises a coating which reinforces the adhesion between the guide and the part.
  • the guide comprises a protection made of a material limiting the risk of damage to the part.
  • the protection is a coating which covers at least the second end face.
  • a striking tool 22 comprises an elongated body 24 as well as a rectilinear rod 26, integral with the body 24 and positioned at a first end of the body 24.
  • the rod 26 and the body 24 are aligned and oriented in a first direction.
  • the body 24 comprises at a second end opposite the rod 26 a striking face 28 disposed in a plane perpendicular to the first direction.
  • the rod 26 includes a free end 30 configured to cooperate with a knocker 32 to be extracted from a hole 34 of a piece 36 with an interference fit.
  • the striking element 32 may be a screw or a rivet.
  • the free end 30 comprises a flat face perpendicular to the first direction.
  • the impact tool is called a pin punch.
  • the free end 30 is pointed.
  • the striking tool is called a punch.
  • the striking tool 26 comprises a jet 38 which comprises at a first end a housing 40 configured to at least partially receive the body 24 and at a second end a striking face 42 arranged in a substantially plane. perpendicular to the first direction.
  • the impact tool 22 may not include a jet 38.
  • the impact tool 22 includes a body 24 and a straight shank 26 which includes a free end 30 configured to cooperate with a striker 32.
  • the shank 26 and the body 24 are aligned and oriented. in a first direction.
  • the striking tool 22 comprises a guide tip 72 which comprises a guide 74.
  • This guide 74 extends from a first end face 76 to a second end face 78 and comprises a duct 80 which extends from the first end face 76 to the second end face 78.
  • This duct 80 comprises an axis A80 oriented in a second direction.
  • the guide 74 comprises an approximately cylindrical lateral surface 82, coaxial with the axis A80 and which connects the first and second end faces 76 and 78.
  • the second end face 78 is configured to bear against the part 36.
  • the second end face 78 is planar and disposed in a plane perpendicular to the second direction.
  • the conduit 80 comprises a first portion 84 which opens out at the level of the first end face 76 and which is configured to house the body 24 of the impacting tool 22 or the jet 38 of the striking tool 22 and allow a translational movement of said body 24 of the striking tool 22 in the second direction.
  • the duct 80 has a diameter greater than that of the shank 26 of the striking tool 22.
  • the body 24 or the jet 38 have a cylindrical outer wall
  • the first portion 84 of the duct 80 has a diameter equal to a sliding clearance ready to that of said cylindrical outer wall.
  • the striking tool 22 is configured to translate relative to the tip guide 72 between a rest position, visible on the figures 2A and 5A , wherein the shank 26 of the striking tool 22 is positioned inside the duct 80 of the guide tip 72 and does not protrude from the second end face 78 and an active position, visible on figures 2B and 5B , in which the shank 26 of the striking tool 22, and more particularly its free end 30, project from the second end face 78 of the guide tip 72.
  • the stroke of the body 24 of the striking tool 22 relative to the guide tip 72 is determined so that the free end 30 of the rod 26 is positioned in the plane of the second end face 78 or slightly offset towards the inside of the duct 80 in the rest position and that the distance between said free end 30 of the rod 26 and the second end face 78 is sufficient to extract an element to be struck 32 in the active position.
  • the guide tip 72 comprises at least one stop for limiting the translational movement of the body 24 of the striking tool 22 in the second direction.
  • the guide tip 72 comprises two stops 86.1, 86.2, a first stop 86.1 configured to immobilize the body 24 of the striking tool 22 in the rest position and a second stop 86.2 configured to immobilize the body 24 of the impact tool 22 in the active position.
  • the guide 74 comprises at least one aperture 88 which opens out on the one hand at the level of the lateral surface 82 and on the other hand in the first portion 84 of the conduit 80.
  • This aperture 88 is an oblong slot with a major axis oriented in the second direction, the length of the oblong slot being determined so that the first end of the oblong slot forms the first stop 86.1 which corresponds to the rest position and that the second end of the oblong slot forms the second stop 86.2 which corresponds to the active position.
  • the guide 74 comprises two diametrically opposed openings 88, 88 '.
  • the guide tip 72 For each lumen 88, 88 ', the guide tip 72 includes a screw 90, 90' configured to screw into a thread provided in the body 24 of the impact tool 22, each screw 90, 90 'being positioned to abutting against the first end of the oblong slot 88, 88 'in the rest position and to abut against the second end of the oblong slot 88, 88' in the active position.
  • the guide tip 78 comprises a return means, such as for example a compression spring 92, configured to maintain the body 24 of the striking tool 22 in the rest position.
  • the conduit 80 comprises a central portion 94 with a reduced diameter smaller than that of the first portion 84 to ensure guidance of the rod 26 of the striking tool, the central portion 94 and the first portion 84 being connected by a bottom 96 conical or plane and arranged in a transverse plane (perpendicular to the second direction).
  • the compression spring 92 is positioned around the rod 26 of the striking tool 22 and interposed between the bottom 96 and the body 24 of the striking tool 22.
  • the second end face 78 of the guide end piece 72 comprises shapes which cooperate with the striking element 32 to immobilize the guide end piece 72 relative to the part 36.
  • the duct 80 comprises a second portion 98 which opens out at the level of the second end face 78 and which is configured to house a part of the element to be struck 52.
  • This second portion 98 has a section greater than that of the rod 26 of the striking tool 22.
  • the rod 26 has a diameter substantially equal to that of the element to be struck 32.
  • the second portion 98 has a diameter greater than that of the striking element 32, substantially equal to that of the crimping ring.
  • the second portion 98 of the duct 80 has a cylindrical shape with a diameter identical to that of the projecting cylindrical part of the striking element 32.
  • this second portion 98 makes it possible to correctly position the guide tip 72 with respect to the element to be struck 32.
  • the rod 26 of the tool to be struck 22 being centered relative to the second portion 98 of the conduit 80 of the As a guide tip 72, said shank 26 of the striking tool 22 is correctly positioned relative to the striking element 32.
  • the second end face 78 of the guide 74 comprises a coating which reinforces the adhesion between the guide 74 and the part 36.
  • the guide 74 comprises a protection 100 made of a material limiting the risk of damage to the part 36.
  • this protection 100 also limits the risks of the guide tip 72 slipping on the part 36.
  • the material is rubber, plastic or the like.
  • the guide 74 is made of a material limiting the risk of damage to the part 56.
  • the protection 100 is a coating which covers at least the second end face 78.
  • the coating is an adhesive thermoplastic sheath configured to cover the second end face 78 and at least one end face. part of the side surface 82 of the guide 74 adjoining the second end face 78.

Description

La présente invention se rapporte à un outil à frapper selon le préambule de la revendication 1 équipé d'un embout de guidage. Un tel outil à frapper est connu de US 2002/148120 A1 .The present invention relates to an impact tool according to the preamble of claim 1 equipped with a guide tip. Such a striking tool is known from US 2002/148120 A1 .

Pour la présente demande, on entend par un outil à frapper, un outil tel qu'un chasse-goupille ou un pointeau par exemple, utilisé pour extraire une fixation tel qu'un rivet ou une vis par exemple, introduite dans un trou d'une pièce avec un ajustement serré. La présente invention a pour objet un outil à frapper selon la revendication 1. Les modes de réalisation préférentiels sont définis par les revendications dépendantes.For the present application, a striking tool is understood to mean a tool such as a pin punch or a punch, for example, used to extract a fastener such as a rivet or a screw for example, introduced into a hole of one piece with a tight fit. The subject of the present invention is a striking tool according to claim 1. The preferred embodiments are defined by the dependent claims.

Selon un premier mode de réalisation visible sur la figure 1, un outil à frapper comprend un corps 10 prolongé par une tige 12 rectiligne. Le corps 10 comprend à l'opposé de la tige 12 une face de frappe 14 et la tige 12 comprend une extrémité libre 16 configurée pour prendre appui contre une fixation à extraire. Le corps 10 de l'outil à frapper peut être inséré à une première extrémité d'un jet 18, comme illustré sur la figure 1.According to a first embodiment visible on the figure 1 , a striking tool comprises a body 10 extended by a straight rod 12. The body 10 comprises, opposite the rod 12, a striking face 14 and the rod 12 comprises a free end 16 configured to bear against a binding to be extracted. The body 10 of the impact tool can be inserted at a first end of a jet 18, as shown in figure figure 1 .

Selon ce premier mode de réalisation, un espace dégagé important est nécessaire autour de la fixation pour porter des coups de marteau directement sur la face de frappe 14 ou sur la seconde extrémité 20 du jet 18.According to this first embodiment, a large free space is necessary around the binding in order to strike the hammer directly on the striking face 14 or on the second end 20 of the jet 18.

Selon un deuxième mode de réalisation, un outil à frapper dit automatique comprend :

  • un corps,
  • une tige mobile par rapport au corps qui comporte une extrémité libre configurée pour prendre appui contre la fixation à extraire, et
  • un système de percussion positionné à l'intérieur du corps et configuré pour percuter la tige mobile.
According to a second embodiment, a so-called automatic striking tool comprises:
  • a body,
  • a rod movable relative to the body which has a free end configured to bear against the binding to be extracted, and
  • a percussion system positioned inside the body and configured to strike the movable rod.

Le système de percussion comprend un percuteur, une masselotte, un premier ressort de compression qui pousse le percuteur vers la tige et un deuxième ressort de compression qui pousse la masselotte en direction du percuteur. Le percuteur comprend une extrémité arrière orientée vers la masselotte. La masselotte comprend un logement configuré pour loger l'extrémité arrière du percuteur.The percussion system comprises a striker, a weight, a first compression spring which pushes the striker towards the rod and a second compression spring which pushes the weight towards the striker. The striker comprises a rear end oriented towards the weight. The weight includes a housing configured to house the rear end of the striker.

Quel que soit le mode de réalisation, seul l'extrémité libre de la tige est en appui contre la fixation à extraire au moment où le coup est porté soit par le marteau ou soit par le système de percussion. Par conséquent, il existe des risques d'endommagement de la pièce en cas de dérapage de l'extrémité libre de la tige sur la fixation à extraire.Whatever the embodiment, only the free end of the rod bears against the binding to be extracted when the blow is struck either by the hammer or by the percussion system. Consequently, there is a risk of damage to the part in the event of the free end of the rod slipping on the binding to be extracted.

La présente invention vise à remédier aux inconvénients de l'art antérieur.The present invention aims to remedy the drawbacks of the prior art.

A cet effet, l'invention a pour objet un outil à frapper pour extraire un élément à frapper d'un trou d'une pièce, ledit outil à frapper comprenant un corps ainsi qu'une tige orientée selon une première direction et qui comporte une extrémité libre configurée pour coopérer avec l'élément à frapper.To this end, the invention relates to a striking tool for extracting an element to be struck from a hole in a part, said striking tool comprising a body and a rod oriented in a first direction and which comprises a free end configured to cooperate with the element to be struck.

Selon l'invention, l'outil à frapper comprend un embout de guidage qui comporte un guide avec un conduit qui s'étend d'une première face d'extrémité à une seconde face d'extrémité configurée pour prendre appui contre la pièce, ledit conduit comprenant une première portion qui débouche au niveau de la première face d'extrémité et qui est configuré pour loger le corps de l'outil à frapper et permettre un mouvement de translation dudit corps de l'outil à frapper par rapport au guide selon la première direction entre une position de repos dans laquelle la tige de l'outil à frapper est positionnée à l'intérieur du conduit de l'embout de guidage et une position active dans laquelle la tige de l'outil à frapper est en saillie par rapport à la seconde face d'extrémité de l'embout de guidage.According to the invention, the striking tool comprises a guide tip which comprises a guide with a duct which extends from a first end face to a second end face configured to bear against the workpiece, said conduit comprising a first portion which opens out at the level of the first end face and which is configured to house the body of the tool to be struck and allow a translational movement of said body of the tool to be struck relative to the guide according to the first direction between a rest position in which the shank of the striking tool is positioned inside the conduit of the guide tip and an active position in which the shank of the striking tool protrudes from to the second end face of the guide tip.

Cette configuration permet de limiter les risques d'endommagement de la pièce car la seconde face d'extrémité de l'embout de guidage est en contact avec la pièce.This configuration makes it possible to limit the risks of damage to the part because the second end face of the guide tip is in contact with the part.

Selon une autre caractéristique de l'invention, l'embout de guidage comprend deux butées pour limiter le mouvement de translation du corps de l'outil à frapper, une première butée configurée pour immobiliser le corps de l'outil à frapper dans la position de repos et une seconde butée configurée pour immobiliser le corps de l'outil à frapper dans la position active. Le guide comprend en outre au moins une lumière oblongue qui présente une longueur déterminée de sorte que la première extrémité de la lumière oblongue forme la première butée qui correspond à la position de repos et que la seconde extrémité de la lumière oblongue forme la seconde butée qui correspond à la position active.According to another characteristic of the invention, the guide tip comprises two stops for limiting the translational movement of the body of the tool to be struck, a first stop configured to immobilize the body of the tool to be struck in the position of. rest and a second stop configured to immobilize the body of the tool to be struck in the active position. The guide further comprises at least one oblong lumen which has a determined length such that the first end of the oblong lumen forms the first stop which corresponds to the rest position and the second end of the oblong lumen forms the second stop which corresponds to the active position.

Selon une autre caractéristique de l'invention, l'outil à frapper comprend un ressort de compression configuré pour pousser le corps de l'outil à frapper dans la position de repos. De préférence, la seconde face d'extrémité est plane et disposée dans un plan perpendiculaire à la première direction.According to another characteristic of the invention, the striking tool comprises a compression spring configured to push the body of the striking tool into the rest position. Preferably, the second end face is planar and disposed in a plane perpendicular to the first direction.

De préférence, la seconde face d'extrémité de l'embout de guidage comprend des formes qui coopèrent avec l'élément à frapper pour immobiliser l'embout de guidage. De préférence, le conduit comprend une deuxième portion qui débouche au niveau de la seconde face d'extrémité et qui est configurée pour loger une partie de l'élément à frapper. Selon un mode de réalisation préférentiel, cette deuxième portion a une section sensiblement égale à une section de l'élément à frapper.Preferably, the second end face of the guide end piece comprises shapes which cooperate with the element to be struck in order to immobilize the guide end piece. Preferably, the duct comprises a second portion which opens out at the level of the second end face and which is configured to house part of the element to be to hit. According to a preferred embodiment, this second portion has a section substantially equal to a section of the element to be struck.

Selon une autre caractéristique de l'invention, la seconde face d'extrémité du guide comprend un revêtement qui renforce l'adhérence entre le guide et la pièce.According to another characteristic of the invention, the second end face of the guide comprises a coating which reinforces the adhesion between the guide and the part.

De préférence, le guide comprend une protection en un matériau limitant les risques d'endommagement de la pièce. Selon un mode de réalisation préférentiel, la protection est un revêtement qui recouvre au moins la seconde face d'extrémité.Preferably, the guide comprises a protection made of a material limiting the risk of damage to the part. According to a preferred embodiment, the protection is a coating which covers at least the second end face.

D'autres caractéristiques et avantages ressortiront de la description qui va suivre de l'invention, description donnée à titre d'exemple uniquement, en regard des dessins annexés sur lesquels :

  • La figure 1 est une coupe d'un outil à frapper selon un premier mode de réalisation de l'art antérieur,
  • Les figures 2A et 2B sont des coupes d'un outil à frapper équipé d'un embout de guidage qui illustre un premier mode de réalisation de l'invention respectivement dans une position de repos et une position active,
  • La figure 3 est une coupe d'un outil à frapper automatique équipé d'un embout de guidage qui illustre un deuxième mode de réalisation de l'invention,
  • La figure 4 est une vue en perspective des différents éléments d'un embout de guidage qui illustre un mode de réalisation de l'invention,
  • Les figures 5A et 5B sont des vues en perspective d'un outil à frapper équipé d'un embout de guidage qui illustre le deuxième mode de réalisation de l'invention respectivement dans une position de repos et une position active.
Other characteristics and advantages will emerge from the following description of the invention, a description given by way of example only, with reference to the appended drawings in which:
  • The figure 1 is a section through a striking tool according to a first embodiment of the prior art,
  • The figures 2A and 2B are cross sections of a striking tool equipped with a guide tip which illustrates a first embodiment of the invention respectively in a rest position and an active position,
  • The figure 3 is a section through an automatic striking tool equipped with a guide tip which illustrates a second embodiment of the invention,
  • The figure 4 is a perspective view of the various elements of a guide tip which illustrates an embodiment of the invention,
  • The figures 5A and 5B are perspective views of a striking tool equipped with a guide tip which illustrates the second embodiment of the invention respectively in a rest position and an active position.

Selon un premier mode de réalisation visible sur les figures 2A et 2B, un outil à frapper 22 comprend un corps 24 allongé ainsi qu'une tige 26 rectiligne, solidaire du corps 24 et positionnée à une première extrémité du corps 24. La tige 26 et le corps 24 sont alignés et orientés selon une première direction. Le corps 24 comprend à une seconde extrémité opposée à la tige 26 une face de frappe 28 disposée dans un plan perpendiculaire à la première direction.According to a first embodiment visible on the figures 2A and 2B , a striking tool 22 comprises an elongated body 24 as well as a rectilinear rod 26, integral with the body 24 and positioned at a first end of the body 24. The rod 26 and the body 24 are aligned and oriented in a first direction. The body 24 comprises at a second end opposite the rod 26 a striking face 28 disposed in a plane perpendicular to the first direction.

La tige 26 comprend une extrémité libre 30 configurée pour coopérer avec un élément à frapper 32 à extraire d'un trou 34 d'une pièce 36 avec un ajustement serré.The rod 26 includes a free end 30 configured to cooperate with a knocker 32 to be extracted from a hole 34 of a piece 36 with an interference fit.

A titre d'exemple, l'élément à frapper 32 peut être une vis ou un rivet.By way of example, the striking element 32 may be a screw or a rivet.

Selon une première variante, l'extrémité libre 30 comprend une face plane perpendiculaire à la première direction. Dans ce cas, l'outil à frapper est appelé chasse goupille.According to a first variant, the free end 30 comprises a flat face perpendicular to the first direction. In this case, the impact tool is called a pin punch.

Selon une deuxième variante, l'extrémité libre 30 est pointue. Dans ce cas, l'outil à frapper est appelé pointeau.According to a second variant, the free end 30 is pointed. In this case, the striking tool is called a punch.

Selon ce premier mode de réalisation, l'outil à frapper 26 comprend un jet 38 qui comporte à une première extrémité un logement 40 configuré pour recevoir au moins partiellement le corps 24 et à une seconde extrémité une face de frappe 42 disposée dans un plan sensiblement perpendiculaire à la première direction.According to this first embodiment, the striking tool 26 comprises a jet 38 which comprises at a first end a housing 40 configured to at least partially receive the body 24 and at a second end a striking face 42 arranged in a substantially plane. perpendicular to the first direction.

En variante, l'outil à frapper 22 peut ne pas comprendre de jet 38.Alternatively, the impact tool 22 may not include a jet 38.

Selon un deuxième mode de réalisation visible sur les figures 3, 5A et 5B, un outil à frapper 22 dit automatique comprend :

  • un corps creux 24 avec un orifice 44 à une première extrémité,
  • une tige 26 mobile par rapport au corps creux 24 traversant l'orifice 44,
  • un système de percussion 46 positionné à l'intérieur du corps creux 24 et configuré pour percuter la tige 26.
According to a second embodiment visible on the figures 3, 5A and 5B , a so-called automatic impact tool 22 comprises:
  • a hollow body 24 with an orifice 44 at a first end,
  • a rod 26 movable relative to the hollow body 24 passing through the orifice 44,
  • a percussion system 46 positioned inside the hollow body 24 and configured to strike the rod 26.

Quel que soit le mode de réalisation, l'outil à frapper 22 comprend un corps 24 et une tige 26 rectiligne qui comprend une extrémité libre 30 configurée pour coopérer avec un élément à frapper 32. La tige 26 et le corps 24 sont alignés et orientés selon une première direction.Regardless of the embodiment, the impact tool 22 includes a body 24 and a straight shank 26 which includes a free end 30 configured to cooperate with a striker 32. The shank 26 and the body 24 are aligned and oriented. in a first direction.

Selon une caractéristique de l'invention, l'outil à frapper 22 comporte un embout de guidage 72 qui comprend un guide 74. Ce guide 74 s'étend d'une première face d'extrémité 76 à une seconde face d'extrémité 78 et comprend un conduit 80 qui s'étend de la première face d'extrémité 76 à la seconde face d'extrémité 78. Ce conduit 80 comprend un axe A80 orienté selon une deuxième direction.According to one characteristic of the invention, the striking tool 22 comprises a guide tip 72 which comprises a guide 74. This guide 74 extends from a first end face 76 to a second end face 78 and comprises a duct 80 which extends from the first end face 76 to the second end face 78. This duct 80 comprises an axis A80 oriented in a second direction.

Selon un mode de réalisation, le guide 74 comprend une surface latérale 82 approximativement cylindrique, coaxiale à l'axe A80 et qui relie les première et seconde faces d'extrémité 76 et 78.According to one embodiment, the guide 74 comprises an approximately cylindrical lateral surface 82, coaxial with the axis A80 and which connects the first and second end faces 76 and 78.

La seconde face d'extrémité 78 est configurée pour prendre appui contre la pièce 36. De préférence, la seconde face d'extrémité 78 est plane et disposée dans un plan perpendiculaire à la deuxième direction.The second end face 78 is configured to bear against the part 36. Preferably, the second end face 78 is planar and disposed in a plane perpendicular to the second direction.

Le conduit 80 comprend une première portion 84 qui débouche au niveau de la première face d'extrémité 76 et qui est configurée pour loger le corps 24 de l'outil à frapper 22 ou le jet 38 de l'outil à frapper 22 et permettre un mouvement de translation dudit corps 24 de l'outil à frapper 22 selon la deuxième direction. Le conduit 80 a un diamètre supérieur à celui de la tige 26 de l'outil à frapper 22.The conduit 80 comprises a first portion 84 which opens out at the level of the first end face 76 and which is configured to house the body 24 of the impacting tool 22 or the jet 38 of the striking tool 22 and allow a translational movement of said body 24 of the striking tool 22 in the second direction. The duct 80 has a diameter greater than that of the shank 26 of the striking tool 22.

Selon un mode de réalisation, le corps 24 ou le jet 38 ont une paroi extérieure cylindrique, la première portion 84 du conduit 80 a un diamètre égal à un jeu de coulissement prêt à celui de ladite paroi extérieure cylindrique.According to one embodiment, the body 24 or the jet 38 have a cylindrical outer wall, the first portion 84 of the duct 80 has a diameter equal to a sliding clearance ready to that of said cylindrical outer wall.

Selon l'invention, après l'assemblage de l'embout de guidage 72 et de l'outil à frapper 22, les première et deuxième directions sont confondues et l'outil à frapper 22 est configuré pour se translater par rapport à l'embout de guidage 72 entre une position de repos, visible sur les figures 2A et 5A, dans laquelle la tige 26 de l'outil à frapper 22 est positionnée à l'intérieur du conduit 80 de l'embout de guidage 72 et ne vient pas en saillie par rapport à la seconde face d'extrémité 78 et une position active, visible sur les figures 2B et 5B, dans laquelle la tige 26 de l'outil à frapper 22, et plus particulièrement son extrémité libre 30, sont en saillie par rapport à la seconde face d'extrémité 78 de l'embout de guidage 72.According to the invention, after the assembly of the guide tip 72 and the striking tool 22, the first and second directions are merged and the striking tool 22 is configured to translate relative to the tip guide 72 between a rest position, visible on the figures 2A and 5A , wherein the shank 26 of the striking tool 22 is positioned inside the duct 80 of the guide tip 72 and does not protrude from the second end face 78 and an active position, visible on figures 2B and 5B , in which the shank 26 of the striking tool 22, and more particularly its free end 30, project from the second end face 78 of the guide tip 72.

Selon une autre caractéristique de l'invention, la course du corps 24 de l'outil à frapper 22 par rapport à l'embout de guidage 72 est déterminée pour que l'extrémité libre 30 de la tige 26 soit positionnée dans le plan de la seconde face d'extrémité 78 ou légèrement décalée vers l'intérieur du conduit 80 dans la position de repos et que la distance entre ladite extrémité libre 30 de la tige 26 et la seconde face d'extrémité 78 soit suffisante pour extraire un élément à frapper 32 dans la position active.According to another characteristic of the invention, the stroke of the body 24 of the striking tool 22 relative to the guide tip 72 is determined so that the free end 30 of the rod 26 is positioned in the plane of the second end face 78 or slightly offset towards the inside of the duct 80 in the rest position and that the distance between said free end 30 of the rod 26 and the second end face 78 is sufficient to extract an element to be struck 32 in the active position.

Selon une autre caractéristique de l'invention, l'embout de guidage 72 comprend au moins une butée pour limiter le mouvement de translation du corps 24 de l'outil à frapper 22 selon la deuxième direction. Selon l'invention, l'embout de guidage 72 comprend deux butées 86.1, 86.2, une première butée 86.1 configurée pour immobiliser le corps 24 de l'outil à frapper 22 dans la position de repos et une seconde butée 86.2 configurée pour immobiliser le corps 24 de l'outil à frapper 22 dans la position active.According to another characteristic of the invention, the guide tip 72 comprises at least one stop for limiting the translational movement of the body 24 of the striking tool 22 in the second direction. According to the invention, the guide tip 72 comprises two stops 86.1, 86.2, a first stop 86.1 configured to immobilize the body 24 of the striking tool 22 in the rest position and a second stop 86.2 configured to immobilize the body 24 of the impact tool 22 in the active position.

Selon un mode de réalisation, le guide 74 comprend au moins une lumière 88 qui débouche d'une part au niveau de la surface latérale 82 et d'autre part dans la première portion 84 du conduit 80. Cette lumière 88 est une lumière oblongue avec un grand axe orienté selon la deuxième direction, la longueur de la lumière oblongue étant déterminée de sorte que la première extrémité de la lumière oblongue forme la première butée 86.1 qui correspond à la position de repos et que la seconde extrémité de la lumière oblongue forme la seconde butée 86.2 qui correspond à la position active.According to one embodiment, the guide 74 comprises at least one aperture 88 which opens out on the one hand at the level of the lateral surface 82 and on the other hand in the first portion 84 of the conduit 80. This aperture 88 is an oblong slot with a major axis oriented in the second direction, the length of the oblong slot being determined so that the first end of the oblong slot forms the first stop 86.1 which corresponds to the rest position and that the second end of the oblong slot forms the second stop 86.2 which corresponds to the active position.

Selon une configuration, le guide 74 comprend deux lumières 88, 88' diamétralement opposée.According to one configuration, the guide 74 comprises two diametrically opposed openings 88, 88 '.

Pour chaque lumière 88, 88', l'embout de guidage 72 comprend une vis 90, 90' configurée pour se visser dans un taraudage prévu dans le corps 24 de l'outil à frapper 22, chaque vis 90, 90' étant positionnée pour venir en butée contre la première extrémité de la lumière oblongue 88, 88' dans la position de repos et pour venir en butée contre la seconde extrémité de la lumière oblongue 88, 88' dans la position active.For each lumen 88, 88 ', the guide tip 72 includes a screw 90, 90' configured to screw into a thread provided in the body 24 of the impact tool 22, each screw 90, 90 'being positioned to abutting against the first end of the oblong slot 88, 88 'in the rest position and to abut against the second end of the oblong slot 88, 88' in the active position.

Selon une autre caractéristique de l'invention, l'embout de guidage 78 comprend un moyen de rappel, comme par exemple un ressort de compression 92, configuré pour maintenir le corps 24 de l'outil à frapper 22 dans la position de repos.According to another characteristic of the invention, the guide tip 78 comprises a return means, such as for example a compression spring 92, configured to maintain the body 24 of the striking tool 22 in the rest position.

Selon un mode de réalisation visible sur les figures 2A et 2B, le conduit 80 comprend une portion centrale 94 avec un diamètre réduit inférieur à celui de la première portion 84 pour assurer un guidage de la tige 26 de l'outil à frapper, la portion centrale 94 et la première portion 84 étant reliées par un fond 96 conique ou plan et disposé dans un plan transversal (perpendiculaire à la deuxième direction). Selon ce mode de réalisation, le ressort de compression 92 est positionné autour de la tige 26 de l'outil à frapper 22 et intercalé entre le fond 96 et le corps 24 de l'outil à frapper 22.According to one embodiment visible on the figures 2A and 2B , the conduit 80 comprises a central portion 94 with a reduced diameter smaller than that of the first portion 84 to ensure guidance of the rod 26 of the striking tool, the central portion 94 and the first portion 84 being connected by a bottom 96 conical or plane and arranged in a transverse plane (perpendicular to the second direction). According to this embodiment, the compression spring 92 is positioned around the rod 26 of the striking tool 22 and interposed between the bottom 96 and the body 24 of the striking tool 22.

Selon une autre caractéristique préférentielle, la seconde face d'extrémité 78 de l'embout de guidage 72 comprend des formes qui coopèrent avec l'élément à frapper 32 pour immobiliser l'embout de guidage 72 par rapport à la pièce 36.According to another preferred feature, the second end face 78 of the guide end piece 72 comprises shapes which cooperate with the striking element 32 to immobilize the guide end piece 72 relative to the part 36.

De préférence, le conduit 80 comprend une deuxième portion 98 qui débouche au niveau de la seconde face d'extrémité 78 et qui est configurée pour loger une partie de l'élément à frapper 52. Cette deuxième portion 98 a une section supérieure à celle de la tige 26 de l'outil à frapper 22. Une fois l'embout de guidage 72 et l'outil à frapper 22 assemblés, la tige 26 de l'outil à frapper 22 est centrée par rapport à la deuxième portion 98 du conduit 80 de l'embout de guidage 72.Preferably, the duct 80 comprises a second portion 98 which opens out at the level of the second end face 78 and which is configured to house a part of the element to be struck 52. This second portion 98 has a section greater than that of the rod 26 of the striking tool 22. Once the guide tip 72 and the striking tool 22 assembled, the rod 26 of the striking tool 22 is centered relative to the second portion 98 of the conduit 80 of the guide piece 72.

De manière générale, la tige 26 a un diamètre sensiblement égal à celui de l'élément à frapper 32.In general, the rod 26 has a diameter substantially equal to that of the element to be struck 32.

Lorsque l'élément à frapper 32 comprend une bague de sertissage, la deuxième portion 98 a un diamètre supérieur à celui de l'élément à frapper 32, sensiblement égal à celui de la bague de sertissage.When the striking element 32 comprises a crimping ring, the second portion 98 has a diameter greater than that of the striking element 32, substantially equal to that of the crimping ring.

Lorsque l'élément à frapper 32 a une partie cylindrique saillante par rapport à la pièce 36, la deuxième portion 98 du conduit 80 a une forme cylindrique avec un diamètre identique à celle de la partie cylindrique saillante de l'élément à frapper 32.When the striking element 32 has a projecting cylindrical part with respect to the part 36, the second portion 98 of the duct 80 has a cylindrical shape with a diameter identical to that of the projecting cylindrical part of the striking element 32.

Ainsi, cette deuxième portion 98 permet de positionner correctement l'embout de guidage 72 par rapport à l'élément à frapper 32. La tige 26 de l'outil à frapper 22 étant centrée par rapport à la deuxième portion 98 du conduit 80 de l'embout de guidage 72, ladite tige 26 de l'outil à frapper 22 est correctement positionnée par rapport à l'élément à frapper 32.Thus, this second portion 98 makes it possible to correctly position the guide tip 72 with respect to the element to be struck 32. The rod 26 of the tool to be struck 22 being centered relative to the second portion 98 of the conduit 80 of the As a guide tip 72, said shank 26 of the striking tool 22 is correctly positioned relative to the striking element 32.

Selon l'invention, la seconde face d'extrémité 78 du guide 74 comprend un revêtement qui renforce l'adhérence entre le guide 74 et la pièce 36.According to the invention, the second end face 78 of the guide 74 comprises a coating which reinforces the adhesion between the guide 74 and the part 36.

Selon une autre caractéristique préférentielle, le guide 74 comprend une protection 100 en un matériau limitant les risques d'endommagement de la pièce 36.According to another preferred characteristic, the guide 74 comprises a protection 100 made of a material limiting the risk of damage to the part 36.

Avantageusement, cette protection 100 limite également les risques de glissement de l'embout de guidage 72 sur la pièce 36.Advantageously, this protection 100 also limits the risks of the guide tip 72 slipping on the part 36.

A titre d'exemple, le matériau est un caoutchouc, une matière plastique ou analogue.For example, the material is rubber, plastic or the like.

Selon une première variante, le guide 74 est réalisé en un matériau limitant les risques d'endommagement de la pièce 56.According to a first variant, the guide 74 is made of a material limiting the risk of damage to the part 56.

Selon une deuxième variante, la protection 100 est un revêtement qui recouvre au moins la seconde face d'extrémité 78. Selon un mode de réalisation, le revêtement est une gaine thermoplastique adhésive configurée pour recouvrir la seconde face d'extrémité 78 et au moins une partie de la surface latérale 82 du guide 74 attenante à la seconde face d'extrémité 78.According to a second variant, the protection 100 is a coating which covers at least the second end face 78. According to one embodiment, the coating is an adhesive thermoplastic sheath configured to cover the second end face 78 and at least one end face. part of the side surface 82 of the guide 74 adjoining the second end face 78.

Les avantages procurés par l'invention sont les suivants :

  • l'embout de guidage 72 permet de limiter les risques d'endommagement de la pièce 36 grâce à la protection 100,
  • l'embout de guidage 72 permet de limiter les risques de glissement et de dérapage grâce à la protection 100 qui renforce l'adhérence entre l'embout de guidage 72 et la pièce et/ou grâce aux formes de la seconde face d'extrémité 78 qui coopèrent avec l'élément à frapper 32 ;
  • l'embout de guidage 72 permet également un meilleur positionnement de la tige 26 de l'outil à frapper 22 par rapport à l'élément à frapper 32 grâce aux formes de la seconde face d'extrémité 78 qui coopèrent avec l'élément à frapper 32 ;
  • l'embout de guidage 72 permet d'orienter la tige 26 de l'outil à frapper 22 par rapport à la pièce 36 grâce à la seconde face d'extrémité 78 qui est perpendiculaire à la tige 26 de l'outil à frapper 22 et qui est configurée pour être plaquée contre la pièce 36 ;
  • l'embout de guidage 72 peut équiper les outils à frapper 22 existants, moyennant la réalisation de trous pour les vis 90, 90' ;
  • l'embout de guidage 72 peut équiper indifféremment les outils à frapper de type non automatiques comme illustré sur les figures 2A et 2B ou automatique comme illustré sur les figures 3, 5A et 5B.
The advantages provided by the invention are as follows:
  • the guide tip 72 limits the risk of damage to the part 36 thanks to the protection 100,
  • the guide tip 72 makes it possible to limit the risks of slipping and skidding thanks to the protection 100 which reinforces the adhesion between the guide tip 72 and the part and / or thanks to the shapes of the second end face 78 which cooperate with the striking element 32;
  • the guide tip 72 also allows better positioning of the rod 26 of the striking tool 22 relative to the striking element 32 thanks to the shapes of the second end face 78 which cooperate with the striking element 32;
  • the guide tip 72 makes it possible to orient the rod 26 of the striking tool 22 relative to the part 36 thanks to the second end face 78 which is perpendicular to the rod 26 of the striking tool 22 and which is configured to be pressed against the part 36;
  • the guide tip 72 can be fitted to the existing striking tools 22, by making holes for the screws 90, 90 ';
  • the guide tip 72 can be fitted equally well to non-automatic impact tools as illustrated in the figures 2A and 2B or automatic as shown on the figures 3, 5A and 5B .

Claims (6)

  1. Impact tool (22) for extracting an impact element (32) from a hole (34) of a part (36), said impact tool (22) comprising a body (24) and a rod (26) oriented in a first direction and which comprises a free end (30), the impact tool (22) comprising a guide tip (72) which comprises a guide (74) with a conduit (80) which extends from a first end face (76) to a second end face (78), said conduit (80) comprising a first portion (84) which emerges at the first end face (76) and which is configured to house the body (24) of the impact tool (22) and allow a translational movement of said body (24) of the impact tool (22) with respect to the guide (74) in the first direction between a position of rest in which the rod (26) of the impact tool (22) is positioned inside the conduit (80) of the guide tip (72) and an active position in which the rod (26) of the impact tool (22) is protruding from the second end face (78) of the guide tip (72), the impact tool comprising a compression spring (92) configured to push the body (24) of the impact tool (22) into the position of rest, the guide tip (72) comprising two end stops (86.1, 86.2) for limiting the translational movement of the body (24) of the impact tool (22), a first end stop (86.1) configured to immobilize the body (24) of the impact tool (22) in the position of rest and a second end stop (86.2) configured to immobilize the body (24) of the impact tool (22) in the active position, characterized in that the guide (74) comprises at least one oblong hole (88, 88') which has a determined length such that the first end of the oblong hole forms the first end stop (86.1) which corresponds to the position of rest and the second end of the oblong hole forms the second end stop (86.2) which corresponds to the active position and in that the second end face (78) of the guide (74) comprises a coating which reinforces the adhesion between the guide (74) and the part (36).
  2. Impact tool according to Claim 1, characterized in that the second end face (78) is planar and disposed in a plane at right angles to the first direction.
  3. Impact tool according to either one of the preceding claims, characterized in that the conduit (80) comprises a second portion (98) which emerges at the second end face (78), the second portion (98) having a section greater than that of the rod (26), the second portion (98) being configured to house a part of the impact element (32).
  4. Impact tool according to one of the preceding claims, characterized in that the guide (74) comprises a protection (100) made of a material limiting the risks of damage to the part (36).
  5. Impact tool according to the preceding claim, characterized in that the protection (100) is a coating which covers at least the second end face (78) .
  6. Impact tool according to one of Claims 3 to 5, characterized in that the second portion (98) has a cylindrical form.
EP17182407.1A 2016-08-25 2017-07-20 Impact tool provided with a guide tip Active EP3287239B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1657925A FR3055237B1 (en) 2016-08-25 2016-08-25 STRIP TOOL EQUIPPED WITH A GUIDE PITCH

Publications (2)

Publication Number Publication Date
EP3287239A1 EP3287239A1 (en) 2018-02-28
EP3287239B1 true EP3287239B1 (en) 2021-09-01

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EP17182407.1A Active EP3287239B1 (en) 2016-08-25 2017-07-20 Impact tool provided with a guide tip

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US (1) US10427285B2 (en)
EP (1) EP3287239B1 (en)
FR (1) FR3055237B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10011007B2 (en) * 2016-10-10 2018-07-03 Sumner Manufacturing Company, Llc Universal center punch
JP7247043B2 (en) * 2019-07-19 2023-03-28 ベクトル株式会社 stamp
US11511453B1 (en) * 2019-10-25 2022-11-29 Pawel A. Poltorak Spot weld removal punch
CN112482060A (en) * 2020-10-19 2021-03-12 浙江雨濠智能设备有限公司 Embroidery and ironing machine

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Publication number Priority date Publication date Assignee Title
FR964389A (en) * 1950-08-11
US1225191A (en) * 1914-09-23 1917-05-08 Charles L Throckmorton Automatic center-punch.
US2328391A (en) * 1941-12-22 1943-08-31 Raymond E Nelson Riveting tool
FR892745A (en) * 1943-03-22 1944-05-17 Improvements to pin punches, punches and similar impact tools
US2430532A (en) * 1945-02-20 1947-11-11 Ralph W Rayburn Pin setting tool
US2641379A (en) * 1950-05-31 1953-06-09 Barbaro Joseph Method of relining brakes
US2981006A (en) * 1959-08-03 1961-04-25 Daniel A Keklikian Punch device
US3172204A (en) * 1963-06-21 1965-03-09 John A Frey Automatic center punch and the like
US4070755A (en) * 1976-07-12 1978-01-31 Amp Incorporated Impact extraction tool
US4649733A (en) * 1983-10-14 1987-03-17 General Dynamics Corporation Punch with compression sleeve
FR2651166B1 (en) * 1989-08-25 1991-10-18 Alsthom Gec DEVICE FOR EXTRACTING SPINDLES.
US6684514B2 (en) * 2001-04-11 2004-02-03 Robert Welch Center scribing kit for use with drilling templates
US7284332B2 (en) * 2005-11-14 2007-10-23 Michael Dustin Long Punch device and system comprising same
GB2463346B (en) * 2008-09-11 2012-05-30 Black & Decker Inc Anchor installation tool
US20120180287A1 (en) * 2011-01-13 2012-07-19 Mervyn Rudgley Guided punch for fastener removal

Also Published As

Publication number Publication date
US10427285B2 (en) 2019-10-01
FR3055237B1 (en) 2019-05-03
US20180056494A1 (en) 2018-03-01
EP3287239A1 (en) 2018-02-28
FR3055237A1 (en) 2018-03-02

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