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EP2093024B1 - Dispositif électro-hydraulique avec contrôle électronique pour déformer des écrous à river - Google Patents

Dispositif électro-hydraulique avec contrôle électronique pour déformer des écrous à river Download PDF

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Publication number
EP2093024B1
EP2093024B1 EP08101965A EP08101965A EP2093024B1 EP 2093024 B1 EP2093024 B1 EP 2093024B1 EP 08101965 A EP08101965 A EP 08101965A EP 08101965 A EP08101965 A EP 08101965A EP 2093024 B1 EP2093024 B1 EP 2093024B1
Authority
EP
European Patent Office
Prior art keywords
micro
motor
rod
rivet
piston
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
EP08101965A
Other languages
German (de)
English (en)
Other versions
EP2093024A1 (fr
Inventor
Giuseppe Preti
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.)
OBER SpA
Original Assignee
OBER SpA
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Publication date
Application filed by OBER SpA filed Critical OBER SpA
Publication of EP2093024A1 publication Critical patent/EP2093024A1/fr
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Publication of EP2093024B1 publication Critical patent/EP2093024B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/20—Drives for riveting machines; Transmission means therefor operated by hydraulic or liquid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/26—Drives for riveting machines; Transmission means therefor operated by rotary drive, e.g. by electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
    • Y10T29/5373—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
    • Y10T29/53739—Pneumatic- or fluid-actuated tool
    • Y10T29/53743—Liquid

Definitions

  • the invention relates to the technical sector of riveting pistols, with special reference to servo-assisted pistols, used for rivets having a cylindrical shape, a partially-threaded axial hole, an abutment collar at a head thereof and a specially-weakened portion at which the plastic deformation will occur.
  • the rivets are destined to join two walls stably, for example in place of spot-welding, or for constituting a threaded anchoring bush of an adequate sturdiness, for structures made of too-soft or too-thin materials for fashioning sufficiently-resistant threads.
  • a known-type riveting pistol constructed by the same applicant in accordance with an Italian patent application for industrial invention no. BO2007A000311 (family member of WO 2008/132576 ), comprises a body and a grip wherein are housed:
  • Document FR2.779.670 discloses an electro-hydraulic pistol device according to the preamble of claim 1.
  • the aim of the present invention is to provide an electro-hydraulic pistol device having an electronic control for deforming the fastening element, which therefore does not require a connection with a source of compressed air.
  • a further aim of the invention is to provide an electro-hydraulic pistol device which exhibits an operating logic which is entirely similar to that of the known pistol described in the preamble hereto.
  • a further aim of the invention relates to the desire to provide an electro-hydraulic pistol device which can be realised in numerous variant embodiments, different in the type of electrical supply provided and/or in the constructive design, with components that can be housed in the body and the grip, or that can be external thereof.
  • a further aim of the invention consists in the possibility of offering versions of the electro-hydraulic pistol device which are particularly compact and light, thanks to the external location of components.
  • 100 denotes a first embodiment of the electro-hydraulic pistol device of the invention, in its entirety; in the following description, for the sake of simplicity, the device 100 will be known simply as a pistol.
  • the pistol 100 comprises a body 101 and a grip 102 in which the following are housed:
  • the pistol 100 further comprises an emergency button control, not illustrated in detail but preferably arranged with a position and/or conformation protected from accidental activation, associated to the electric circuit 6 and destined to activate the second micro-motor 1 such that the rod 2 rotates to the left, in a way which will be described herein below.
  • an emergency button control not illustrated in detail but preferably arranged with a position and/or conformation protected from accidental activation, associated to the electric circuit 6 and destined to activate the second micro-motor 1 such that the rod 2 rotates to the left, in a way which will be described herein below.
  • the first transmission organs 11 are constituted, for example, by a plurality of gears also functioning as speed reducer; preferably these organs 11 cause the second micro-motor 1 and the rod 2 to rotate in a same direction ( figures 2 and 3 ).
  • the second transmission organs 52 are constituted, for example, by an epicyclical gear reducer.
  • the rivet 3 is arranged in the hole in the wall P therefor, with the relative collar 3B striking against the wall; or, alternatively, the rivet 3 is manually positioned before the rod 2 of the pistol 100 (see figure 4 ).
  • the rod 2 is inserted into the axial hole 3A of the rivet 3 up to the start of the threading thereof, thus determining an axial thrust on the threaded rod 2, towards the body 101 of the pistol 100, which causes activation of the first micro-switch 61; the closing of the contact therein provides the signal to the control unit 60 to activate the second micro-motor 1 in a suitable direction, rotating the rod 2 in right-wise rotation in order to screw up the rivet 3.
  • the second micro-switch 62 is activated and the control unit 60 starts up the automatic operating cycle of the pistol 100 ( figure 6 ).
  • the first micro-motor 5 is then activated in the suitable direction, in order to determine the outward run of the piston 50 in the cylinder 51, with a consequent increase in the pressure of the hydraulic fluid F into the chamber 41 of the cursor 40 ( figure 7 ).
  • the increase in the pressure in the hydraulic system 4 increases the resistance to rising of the piston 50, which leads to a proportional increase in the absorption of power on the part of the first micro-motor 5.
  • the maximum peak of absorption the first micro-motor 5 has to reach is calculated and the relative datum is stored in the control unit 60.
  • control unit 60 Inverts the rotation of the first micro-motor 5, with consequent inversion of the movement of the piston 50 ( figure 9 ).
  • the control unit 60 in a suitable phase relation with the descent of the piston 50, starts up the second micro-motor 1 too, setting the threaded rod 2 in leftwise rotation so that it unscrews from the rivet 3 which by now is blocked to the wall P ( figure 10 ).
  • the first micro-motor 5 is maintained in motion until the piston 50 reaches the lowered start position, after which it is automatically deactivated by the control unit 60 (see figure 10 once more); the signal which attests to the reaching of the position can be given by an end-run sensor (not illustrated), or by the increase of absorption of the first micro-motor 5 consequent upon the intercepting of a mechanical end-run stop 53 which is integral with the piston 50.
  • a particularly able operator therefore, can optimally synchronise the disengagement of the rod 2 with the halting of the second micro-motor 1, such as to render the pistol 100 immediately ready for another rivet 3, previously positioned on the wall P.
  • the unscrewing can be completed by pressing the emergency command, in order to reactivate the second micro-motor 1 with a further left-wise rotation of the rod 2.
  • control logic of the control unit 60 can be programmed to continue the interrupted cycle if, for example, release occurs during the stage of deformation of the rivet 3.
  • the pistol repeats the automatic traction cycle on the rod 2 without causing undesired stress on the rivet 3 applied, as on reaching the preceding maximum fluid pressure F, the control unit 60 interrupts the action and starts unscrewing, so that the only drawback that obtains is a slight waste of time.
  • the batteries 7 and possibly also the control unit 60 can be housed in a module which is external of the body of the pistol; this is to contain the weight and size of the pistol, making it easier to use.
  • the batteries are eliminated and electrical energy is sourced from a network, with the interposing of a suitable transformer/rectifier, with the aim of obtaining unlimited working autonomy, together (in this case too) with a considerable reduction in weight.
  • the constructional characteristics of the two above-mentioned embodiments are combined, thus providing a module which is external of the body of the pistol which contains, apart from the batteries and the control unit, the transformer/rectifier for network-sourced power and possibly a device for recharging the batteries.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)
  • Connection Of Plates (AREA)
  • Surgical Instruments (AREA)
  • Regulating Braking Force (AREA)
  • Clamps And Clips (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Manipulator (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Servomotors (AREA)

Claims (15)

  1. Dispositif de pistolet électro-hydraulique pour la déformation des éléments de fixation, d'un type comprenant:
    une gâchette (63), un circuit électrique (6) et des moyens d'alimentation d'énergie électrique (7),
    une tige filetée (2) qui met en prise un trou axial fileté (3A) d'un rivet (3) ;
    un système hydraulique (4) comprenant des moyens (40), associés à la tige filetée (2), qui imprime une translation axiale sur la tige filetée (2), par l'action du fluide hydraulique (F) du système (4), pour déterminer une déformation plastique d'une partie prédéterminée du rivet (3) afin de bloquer le rivet (3) sur une paroi (P) correspondante ;
    un piston (50) positionné à l'intérieur d'un cylindre (50) ;
    un premier micromoteur électrique (5) pour commander les courses de compression et de décharge dudit piston (50) positionné à l'intérieur dudit cylindre (51), afin de déterminer, respectivement, une augmentation de la pression du fluide (F) du système hydraulique (4), jusqu'à une valeur maximale prédéterminée et une réduction de la pression ;
    le dispositif étant caractérisé en ce que :
    un deuxième micromoteur électrique (1) est prévu pour placer la tige filetée (2) en rotation respectivement vers la droite et vers la gauche, respectivement pour mettre en prise et dégager la tige filetée (2) du trou axial fileté (3A) du rivet ;
    ledit circuit électrique (6) est géré par une unité de commande électronique (60) et comprend un premier micro-interrupteur (61) qui peut être activé via la tige (2) pour l'activation du deuxième micromoteur (1), de sorte que la tige (2) tourne vers la droite, et un deuxième micro-interrupteur (62), pouvant être activé par la gâchette (63) après la désactivation du premier micro-interrupteur (61), pour activer le premier micromoteur (5) tout d'abord dans une direction provoquant la course de compression du piston (50) et ensuite dans une autre direction provoquant la course de décharge du piston (50) ainsi que pour activer le deuxième micromoteur (1) en relation de phase avec l'activation de ladite course de décharge du piston (50) de sorte que la tige (2) tourne vers la gauche ; et
    lesdits moyens d'alimentation d'énergie électrique (7) sont adaptés pour alimenter l'énergie électrique au circuit électrique (6) et en passant par le circuit (6), au premier micromoteur (5) et au deuxième micromoteur (1).
  2. Dispositif selon la revendication 1, caractérisé en ce que les moyens (40) associés à la tige (2), sont constitués par un curseur qui est inséré de manière coulissante dans une chambre (41) et soumis sur un côté à l'action d'un ressort de contraste (42) et sur un autre côté, à l'action du fluide hydraulique (F) du système (4).
  3. Dispositif selon la revendication 1, caractérisé en ce que l'unité de commande (60) est équipée de moyens pour la détection instantanée de l'absorption de la puissance du premier micromoteur (5) et des moyens de calcul pour rapporter une valeur de l'absorption à la pression du fluide hydraulique (F).
  4. Dispositif selon la revendication 1, caractérisé en ce que des premiers organes de transmission (11) sont intercalés entre le deuxième micromoteur (1) et la tige filetée (2).
  5. Dispositif selon la revendication 4, caractérisé en ce que les premiers organes de transmission (11) sont constitués par une pluralité d'engrenages qui réduisent un nombre de rotations d'une entrée à une sortie du mouvement.
  6. Dispositif selon la revendication 1, caractérisé en ce que les deuxièmes organes de transmission (52) sont intercalés entre le premier micromoteur (5) et le piston (50).
  7. Dispositif selon la revendication 6, caractérisé en ce que les deuxièmes organes de transmission (52) sont constitués par un réducteur épicyclique.
  8. Dispositif selon la revendication 1, caractérisé en ce que l'on inclut une commande d'urgence actionnée par bouton, associée au circuit électrique (6) et activant le deuxième micromoteur (1) de sorte que la tige (2) tourne vers la gauche.
  9. Dispositif selon la revendication 1, caractérisé en ce qu'un interrupteur à deux voies est associé aux moyens d'alimentation d'énergie électrique (7), les positions de l'interrupteur à deux voies étant respectivement prévues pour raccorder et déconnecter les moyens d'alimentation d'énergie électrique (7) à et du circuit électrique (6).
  10. Dispositif selon la revendication 1 ou 9, caractérisé en ce que les moyens d'alimentation d'énergie électrique (7) sont logés dans le corps (101) et la poignée (102) du dispositif (100).
  11. Dispositif selon la revendication 1 ou 9, caractérisé en ce que les moyens d'alimentation d'énergie électrique (7) sont logés dans un module qui est externe par rapport au dispositif (100).
  12. Dispositif selon la revendication 1 ou 9 ou 10 ou 11, caractérisé en ce que les moyens d'alimentation d'énergie électrique (7) sont constitués par des batteries.
  13. Dispositif selon la revendication 1 ou 9 ou 10 ou 11, caractérisé en ce que les moyens d'alimentation d'énergie électrique (7) sont constitués par un transformateur / rectificateur qui peut être raccordé à une conduite de source d'électricité externe.
  14. Dispositif selon la revendication 1, caractérisé en ce que l'unité de commande (60) est logée dans le corps (101) et la poignée (102) du dispositif (100).
  15. Dispositif selon la revendication 1, caractérisé en ce que l'unité de commande (60) est logée dans un module qui est externe par rapport au dispositif (100).
EP08101965A 2008-02-21 2008-02-25 Dispositif électro-hydraulique avec contrôle électronique pour déformer des écrous à river Active EP2093024B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000117A ITBO20080117A1 (it) 2008-02-21 2008-02-21 Dispositivo elettro-idraulico a pistola con controllo elettronico per la deformazione di elementi di fissaggio

Publications (2)

Publication Number Publication Date
EP2093024A1 EP2093024A1 (fr) 2009-08-26
EP2093024B1 true EP2093024B1 (fr) 2010-09-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08101965A Active EP2093024B1 (fr) 2008-02-21 2008-02-25 Dispositif électro-hydraulique avec contrôle électronique pour déformer des écrous à river

Country Status (8)

Country Link
US (1) US20110271504A1 (fr)
EP (1) EP2093024B1 (fr)
AT (1) ATE482055T1 (fr)
BR (1) BRPI0907795B1 (fr)
DE (1) DE602008002698D1 (fr)
ES (1) ES2353468T3 (fr)
IT (1) ITBO20080117A1 (fr)
WO (1) WO2009103695A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11511403B2 (en) 2020-12-07 2022-11-29 Dubuis Et Cie S.A.S. Joining tool for joining a deformable element to a workpiece
EP4371681A1 (fr) 2022-11-17 2024-05-22 Bollhoff Otalu S.A.S. Dispositif de pose pour écrou à rivet aveugle

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8205779B2 (en) 2009-07-23 2012-06-26 Tyco Healthcare Group Lp Surgical stapler with tactile feedback system
DE102009040126A1 (de) * 2009-09-04 2011-03-17 Böllhoff Verbindungstechnik GmbH Elektromotorischer Hydraulikantrieb und Verfahren zum Bereitstellen eines definierten Hydraulikdrucks und/oder -volumens
JP5674691B2 (ja) * 2012-02-23 2015-02-25 株式会社ロブテックス 電動リベッター
ITBO20120276A1 (it) * 2012-05-21 2013-11-22 Ober S P A Dispositivo elettro-idraulico a pistola con controllo elettronico per la deformazione di elementi di fissaggio
EP2786843B1 (fr) * 2013-04-02 2019-09-25 Dubuis et Cie S.A.S. Outil de sertissage alimenté par batterie
DE102013105703B4 (de) * 2013-06-04 2015-05-21 VVG-Befestigungstechnik GmbH & Co. KG Nietgerät
TWI477331B (zh) * 2013-08-09 2015-03-21 Tranmax Machinery Co Ltd Electromotive pull nail gun with pre - tensioned nail and its operation method
ITUB20150545A1 (it) 2015-03-11 2016-09-11 Ober S P A Sistema per l'accoppiamento/disaccoppiamento di un tirante filettato con/da una sede porta-tirante in una pistola per la deformazione di elementi di fissaggio, e pistola ottenuta con tale sistema
US11673243B2 (en) * 2018-09-05 2023-06-13 Milwaukee Electric Tool Corporation Blind rivet nut-setting tool
JP7187339B2 (ja) 2019-01-30 2022-12-12 ポップリベット・ファスナー株式会社 ブラインドナット締結装置
US11654475B2 (en) 2020-06-03 2023-05-23 Milwaukee Electric Tool Corporation Rivet setting tool
IT202100010556A1 (it) * 2021-04-27 2022-10-27 Ober S P A Attrezzatura portatile
US12186870B2 (en) 2022-07-08 2025-01-07 Milwaukee Electric Tool Corporation Power tool sensing a multi-pole magnet junction

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US2753072A (en) * 1952-08-12 1956-07-03 Thor Power Tool Co Tool for installing tubular rivets
JPH0475882A (ja) * 1990-07-13 1992-03-10 Makita Corp 電動工具
DE4126602A1 (de) * 1991-08-12 1993-02-18 Gesipa Blindniettechnik Blindnietgeraet
DE19818757A1 (de) * 1998-04-27 1999-11-04 Honsel M H Beteiligungs Gmbh Nietsetzgerät
DE19818756A1 (de) * 1998-04-27 1999-11-04 Honsel M H Beteiligungs Gmbh Nietsetzgerät
FR2779670B1 (fr) * 1998-06-15 2000-08-04 Jean Claude Joux Appareil electroportatif pour la pose des ecrous a sertir ou le sertissage des rivets aveugles a rupture de tige
GB9923266D0 (en) * 1999-10-02 1999-12-08 Textron Fastening Syst Ltd Riveting apparatus
ITBO20070311A1 (it) * 2007-04-27 2008-10-28 Ober S P A Pistola rivettatrice pneumoidraulica

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11511403B2 (en) 2020-12-07 2022-11-29 Dubuis Et Cie S.A.S. Joining tool for joining a deformable element to a workpiece
EP4371681A1 (fr) 2022-11-17 2024-05-22 Bollhoff Otalu S.A.S. Dispositif de pose pour écrou à rivet aveugle
WO2024104644A1 (fr) * 2022-11-17 2024-05-23 Bollhoff Otalu Sas Dispositif de pose d'un écrou de rivet aveugle

Also Published As

Publication number Publication date
DE602008002698D1 (de) 2010-11-04
ATE482055T1 (de) 2010-10-15
EP2093024A1 (fr) 2009-08-26
BRPI0907795A2 (pt) 2015-07-14
ES2353468T3 (es) 2011-03-02
ITBO20080117A1 (it) 2009-08-22
US20110271504A1 (en) 2011-11-10
BRPI0907795B1 (pt) 2019-12-17
WO2009103695A1 (fr) 2009-08-27

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