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EP3388165B1 - Dispositif de pose de rivets auto-poinconnants et dispositif de fabrication - Google Patents

Dispositif de pose de rivets auto-poinconnants et dispositif de fabrication Download PDF

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Publication number
EP3388165B1
EP3388165B1 EP18160619.5A EP18160619A EP3388165B1 EP 3388165 B1 EP3388165 B1 EP 3388165B1 EP 18160619 A EP18160619 A EP 18160619A EP 3388165 B1 EP3388165 B1 EP 3388165B1
Authority
EP
European Patent Office
Prior art keywords
punch
rivet
components
damping material
frame
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
EP18160619.5A
Other languages
German (de)
English (en)
Other versions
EP3388165A1 (fr
Inventor
Florian Woelke
Armin Karle
Steven Maul
Reiner Ramsayer
Christoph Kauth
Martin Dieterle
Andre Philipskoetter
Patrick Nickel
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3388165A1 publication Critical patent/EP3388165A1/fr
Application granted granted Critical
Publication of EP3388165B1 publication Critical patent/EP3388165B1/fr
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Anticipated expiration legal-status Critical

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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
    • B21J15/02—Riveting procedures
    • B21J15/025—Setting self-piercing rivets
    • 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
    • B21J15/12—Riveting machines with tools or tool parts having a movement additional to the feed movement, e.g. spin

Definitions

  • the present invention relates to a punch riveting apparatus for connecting at least two components, and to a production apparatus having such a punch riveting apparatus.
  • Riveting serve to connect at least two in a connection region in particular flat trained components (joint partner).
  • a punch riveting method is characterized, for example, by the fact that pre-punching of the components to be joined together is not required. Instead, a rivet is pressed into the at least two components by means of a joining tool comprising a punch, it being possible to ensure that the rivet or the components by a correspondingly shaped counter-holder, for example in the form of a die, which cooperates with the joining tool deform in a certain way to produce a positive and positive connection between the components.
  • a punch riveting apparatus in which a ram is set in vibration to press a rivet into components.
  • acting as a counter-holder for the components die is a spring element in or on Mounted frame, wherein instead of the spring element and an elastomer can be used.
  • a punch riveting device serves for connecting at least two components by means of a rivet and has a frame on which a joining tool and an anvil are arranged such that the at least two components can be arranged between the joining tool and the counter holder during the indentation of the rivet by means of the joining tool , Furthermore, the punch riveting device has a vibration generator which is set up to vibrate at least one component involved in pressing in of the rivet into the at least two components during oscillation during at least one operating phase.
  • a stamp can be used as part of the joining tool.
  • the counter-holder can be provided for example in the form of a die on the opposite side of the stamp the at least two components.
  • a vibration generator is in particular a sound generator, in particular an ultrasonic generator, into consideration.
  • the rivet and / or the punch and / or the counter-holder and / or at least one of the at least two components come into consideration as the at least one component involved in pressing in the rivet which is set in vibration.
  • the stamp is simultaneously used as a sonotrode and is connected via a booster with a vibration converter, each as part of a set unit, which in turn connected to the vibrator is.
  • the frame which may be present in particular in the form of a so-called. C-frame or C-bracket, are decoupled from the component in question with respect to a vibration transmission.
  • the damping material may in particular have a natural frequency which is less than an excitation frequency of the vibration generator. It is particularly preferred if the damping material is at most half, preferably at most one fifth, more preferably at most one tenth, the excitation frequency of the vibrator. In this way, the vibration amplitude forming within the frame can be reduced by a factor of up to 100.
  • the damping material has a strength of at least 20 MPa, and according to the invention has a modulus of elasticity of at least 5000 MPa.
  • the modulus of elasticity should be chosen so that an elastic deformation of the material remains below 0.02 mm.
  • the damping material according to the invention is an elastic material in the form of a polymer, in particular a technical thermoplastic, in question.
  • a polymer in particular a technical thermoplastic
  • other negative influences such as a strong noise or a transmission of vibrations to other components or devices such as a robot arm, on which the punch riveting is attached, avoided.
  • the at least one of the components involved in the at least two components and arranged on the frame when the rivet is pressed in, between which and the frame the damping material is provided preferably comprises the counterholder. While in other involved in impressing components, such as in particular the joining tool or the stamp, other possibilities as a damping material for at least partial decoupling of vibrations are conceivable, such as an attachment in a node, a connection between the anvil and the frame is necessary the particularly good forces, as they arise when pressing the rivet, can absorb. This can be done by providing the aforementioned damping material, since in this case a large-area attachment is possible.
  • a material block is provided between the counterholder and the damping material.
  • This block of material may for example consist of the same material as the die.
  • This additional block of material allows a further reduction in the transmitted vibrations, since this block of material can absorb some of the vibrations.
  • a mass of the material block is more than the mass of the counter-holder, preferably at least ten times, more preferably at least one hundred times, the mass of the counter-holder.
  • a production device has a punch riveting device according to the invention. To avoid repetition, reference is made to the above remarks on the punch riveting apparatus with regard to the advantages and further refinements of the production apparatus.
  • FIG. 1 is simplified and schematically illustrated a manufacturing device 100 according to the invention with a punch rivet 10 according to the invention in a preferred embodiment.
  • the manufacturing device 100 may be, for example, an industrial robot in a production hall, for example for an automobile body shop.
  • the production device 100 has a carrier structure 3 arranged on a base and two arms 4 and 5 arranged thereon and connected to one another and movable. At the end of the arm 5, the punch rivet 10 is arranged, which will be described in more detail below.
  • a computing unit 80 is shown, which is, for example, a control unit for the punch riveting apparatus 10.
  • the arithmetic unit 80 may also be used as a control unit for the entire manufacturing facility, i. be provided in addition to the punch riveting especially for the control of the movable arms.
  • display means 90 for example a display, are provided on which current operating parameters of the punch riveting apparatus can be displayed.
  • the element 90 can also be a combined display / input device, for example a touchscreen.
  • FIG. 2 schematically a punch rivet 10 according to the invention is shown in a preferred embodiment.
  • the punch riveting apparatus 10 has a frame 60, which is preferably in the form of a C-frame or C-bracket, on which the individual components are usually arranged in a punch riveting apparatus in order to be able to assume the desired position relative to one another.
  • the punch rivet 10 for example, on an arm as in FIG. 1 be shown attached.
  • the punch riveting apparatus 10 has a punch 15, by way of example with a round cross section.
  • the punch 15 is radially surrounded by a (sleeve-shaped) hold-down 16 and arranged movable relative to this in the longitudinal direction.
  • the hold-down is fastened by means of a spring on the punch 15.
  • the punch 15 and the hold-down 16 in this case form a joining tool 70.
  • the punch 15 is coupled to a drive 50 which serves to apply a force F required to press the rivet 20 into the two components 11, 12.
  • the drive 50 can be controlled, for example, by means of the computing unit 80.
  • the hold-down 16 is adapted to press against the surface of the die 15 facing member 11 with a hold-down force.
  • a counter-holder in the form of a die 18 is arranged on the stamp 15 and the hold-down 16 opposite side of the two components 11, 12, a counter-holder in the form of a die 18 is arranged.
  • the stamp 15 is in the vertical direction, as well as the hold-16, movably arranged and relative to the die 18 movable.
  • the hold-down 16 and the die 18 serve to clamp or compress the two components 11, 12 between the hold-down 16 and the die 18 during processing by the punch 15.
  • the rivet 20 here by way of example a half-tubular rivet, preferably consists of a material which is harder than the materials of the two components 11, 12, at least in the region of a rivet shank.
  • the component 11 facing away from the flat top of the rivet is arranged in operative connection with the punch 15, which rests flat against the top of the rivet 20.
  • the punch 15 is connected to a (mechanical) vibration converter 30, which can be excited via a vibration generator 32, in particular an ultrasonic generator, for generating vibrations.
  • a vibration generator 32 in particular an ultrasonic generator
  • ultrasonic vibrations with an amplitude (distance between the maximum positive and negative amplitude of a vibration) between 10 .mu.m and 110 .mu.m (corresponding to an amplitude of 5 .mu.m to 55 .mu.m) and a frequency between 15 kHz and 35 kHz or possibly higher generated ,
  • These vibrations are coupled from the vibration converter 30 via a booster 31 and the punch 15, which also serves as a sonotrode, in the rivet 20.
  • the joining tool 70, the booster 31 and the oscillation converter 30 form a setting unit 71.
  • the drive 50 can be, for example, a drive with ball, roller or planetary screw drive or the like, which is suitable for applying a force F for pressing in the rivet 20 into the components 11, 12.
  • the booster 31 and above the vibration converter 32 with the punch 15 and the hold-16 are mounted by means of a holding device 35.
  • the counter-holder 18 which is designed here in the form of a die, is fastened on or in the material block 62.
  • the block of material 62 has a significantly greater mass than the counter-holder 18, whereby a large part of the vibrations, which are transmitted by the joining tool 70 via the components on the anvil when the rivet is pressed in, are already absorbed.
  • the block of material 62 is mounted on a damping material 61, which in turn is mounted on the frame 60.
  • the damping material 61 forms a kind of intermediate layer between the material block 62 and the frame 60.
  • the attachment of the material block 62 on the damping material 61, as well as that of the damping material 61 on the frame 60 for example, by gluing or other suitable fastening methods.
  • the damping material for example a polymer, in particular a technical thermoplastic, with suitable values for the modulus of elasticity and strength and in particular a natural frequency which is significantly lower than the excitation frequency of the vibrator, further decoupling of the counter-holder 18 from the frame 60 in terms a vibration transmission take place.
  • An excitation of the damping material to vibrations is hardly possible due to the low natural frequency, whereby the decoupling is achieved.
  • block of material 62 may also be omitted, in which case the counter-holder 18 is suitably secured to the cushioning material 61.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Connection Of Plates (AREA)

Claims (9)

  1. Dispositif de pose de rivets auto-poinçonnants (10) pour la connexion de deux composants (11, 12) au moyen d'un rivet (20), comprenant un cadre (60) sur lequel sont disposés un outil d'assemblage (70) et un moyen antagoniste (18) de telle sorte que les au moins deux composants (11, 12) pendant l'enfoncement du rivet (20) au moyen de l'outil d'assemblage (70), puissent être disposés entre l'outil d'assemblage (70) et le moyen antagoniste (18), et
    comprenant un générateur d'oscillations (32) qui est prévu, pendant au moins une phase de fonctionnement, lors de l'enfoncement, pour animer d'un mouvement d'oscillation au moins un composant (11, 12, 15, 18, 20) impliqué lors de l'enfoncement du rivet (20) dans les au moins deux composants (11, 12),
    un matériau d'amortissement (61) pour l'amortissement des oscillations étant prévu entre le cadre (60) et au moins un des composants (15, 18) impliqués lors de l'enfoncement du rivet (20) dans les au moins deux composants (11, 12) et disposés sur le cadre (60),
    caractérisé en ce que le matériau d'amortissement (61) présente un module d'élasticité d'au moins 5000 MPa et comprend un polymère.
  2. Dispositif de pose de rivets auto-poinçonnants (10) selon la revendication 1, dans lequel le matériau d'amortissement (61) présente une fréquence propre qui est inférieure à une fréquence d'excitation du générateur d'oscillations (32).
  3. Dispositif de pose de rivets auto-poinçonnants (10) selon la revendication 2, dans lequel la fréquence propre du matériau d'amortissement (61) vaut au maximum la moitié, de préférence au maximum un cinquième, encore plus préférablement au maximum un dixième, de la fréquence d'excitation du générateur d'oscillations (32).
  4. Dispositif de pose de rivets auto-poinçonnants (10) selon l'une quelconque des revendications précédentes, dans lequel l'au moins un des composants impliqués lors de l'enfoncement du rivet (20) dans les au moins deux composants (11, 12) et disposés sur le cadre (60), entre lequel et le cadre (60) le matériau d'amortissement (61) est prévu, comprend le moyen antagoniste (18).
  5. Dispositif de pose de rivets auto-poinçonnants (10) selon la revendication 4, dans lequel, entre le moyen antagoniste (18) et le matériau d'amortissement (61) est prévu un bloc de matériau (62) .
  6. Dispositif de pose de rivets auto-poinçonnants (10) selon la revendication 5, dans lequel une masse du bloc de matériau (62) est supérieure à la masse du moyen antagoniste (18), de préférence vaut au moins 10 fois, plus préférablement au moins 100 fois, la masse du moyen antagoniste (18) .
  7. Dispositif de pose de rivets auto-poinçonnants (10) selon l'une quelconque des revendications précédentes, dans lequel le matériau d'amortissement (61) présente une solidité d'au moins 20 MPa.
  8. Dispositif de pose de rivets auto-poinçonnants (10) selon l'une quelconque des revendications précédentes, dans lequel le matériau d'amortissement (61) comprend un matériau thermoplastique technique.
  9. Dispositif de fabrication (100) comprenant un dispositif de pose de rivets auto-poinçonnants (10) selon l'une quelconque des revendications précédentes.
EP18160619.5A 2017-03-29 2018-03-08 Dispositif de pose de rivets auto-poinconnants et dispositif de fabrication Active EP3388165B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017205264.3A DE102017205264A1 (de) 2017-03-29 2017-03-29 Stanznietvorrichtung und Fertigungseinrichtung

Publications (2)

Publication Number Publication Date
EP3388165A1 EP3388165A1 (fr) 2018-10-17
EP3388165B1 true EP3388165B1 (fr) 2019-09-11

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EP18160619.5A Active EP3388165B1 (fr) 2017-03-29 2018-03-08 Dispositif de pose de rivets auto-poinconnants et dispositif de fabrication

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EP (1) EP3388165B1 (fr)
DE (1) DE102017205264A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19729368A1 (de) * 1997-07-09 1999-01-14 Ortwin Hahn Vorrichtung und Verfahren zum mechanischen Fügen von Blechen, Profilen und/oder Mehrblechverbindungen
GB0813883D0 (en) 2008-07-30 2008-09-03 Henrob Ltd Joining apparatus and method
DE102013000387B4 (de) * 2013-01-11 2017-04-27 Volkswagen Aktiengesellschaft Fügevorrichtung mit C-förmigen Rahmen und nachgiebiger Matrize zum vorlochfreien Fügen von Bauteilen mittels kraftimpulsbeaufschlagtem Fügeelement, sowie Matrizenhalter und Handhabungsvorrichtung hierfür
EP2754512B1 (fr) * 2013-01-11 2015-09-16 Volkswagen Aktiengesellschaft Dispositif d'assemblage et procédé d'assemblage sans avant-trou de composants au moyen d'un élément d'assemblage soumis à des impulsions de force
DE102015214014A1 (de) * 2015-07-24 2017-01-26 Robert Bosch Gmbh Stanznietvorrichtung und Fertigungsvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
EP3388165A1 (fr) 2018-10-17
DE102017205264A1 (de) 2018-10-04

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