EP3124133A1 - Contre-support pour un dispositif de rivetage, dispositif de rivetage, utilisation d'un contre-support et procédé de fabrication d'un contre-support - Google Patents

Contre-support pour un dispositif de rivetage, dispositif de rivetage, utilisation d'un contre-support et procédé de fabrication d'un contre-support Download PDF

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Publication number
EP3124133A1
EP3124133A1 EP16173027.0A EP16173027A EP3124133A1 EP 3124133 A1 EP3124133 A1 EP 3124133A1 EP 16173027 A EP16173027 A EP 16173027A EP 3124133 A1 EP3124133 A1 EP 3124133A1
Authority
EP
European Patent Office
Prior art keywords
counter
holder
punch
components
die
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.)
Granted
Application number
EP16173027.0A
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German (de)
English (en)
Other versions
EP3124133B1 (fr
Inventor
Sebastian Engler
Florian Woelke
Ingo Kesel
Thomas Kiedrowski
Jens Koenig
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
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3124133A1 publication Critical patent/EP3124133A1/fr
Application granted granted Critical
Publication of EP3124133B1 publication Critical patent/EP3124133B1/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
    • B21J15/02—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
    • B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets

Definitions

  • the present invention relates to a counter-holder for a punch riveting apparatus, a punch riveting apparatus, a use of such a counter-holder and a method for producing such a counter-holder.
  • Punching riveting methods are used to connect at least two components that are particularly flat in a connection region (joining partner).
  • a punch riveting method is characterized in that a pre-punching of the components to be joined together is not required. Rather, a rivet is pressed by means of a punch or a punch tool in the at least two components, being ensured by a correspondingly shaped counter-holder, for example.
  • a punch or a punch tool in the at least two components, being ensured by a correspondingly shaped counter-holder, for example.
  • the rivet or the components in a certain Deforming manner to produce a positive and positive connection between the components.
  • Ultrasonic punch riveting known, in which a vibration generator, such as.
  • An ultrasonic generator is used to enable one or more components when connecting the components in vibration. By this vibration, for example, the expended force is reduced to push the rivet.
  • An inventive counter-holder also referred to as a die, for a punch riveting device with a punch, in which at least two components to be connected can be arranged between the counter-holder and the punch, has a surface which is re-polished at least in a region facing the components.
  • the remelt-polished surface is in particular laser-polished or electron-beam polished.
  • a conventional counter-holder for a punch riveting is usually milled or rotated and possibly mechanically polished or ground.
  • the counter-holder thus has a relatively rough surface, on which material can adhere from a component abutting the punch riveting process. This is particularly the case, for example, in the case of stamped riveting of soft materials such as, for example, pure aluminum.
  • an anvil according to the invention now has a crack-free and pore-free surface on which material can not or at least hardly adhere.
  • a thin layer of the surface is melted with a laser or electron beam guided along the surface and then hardened again. This leads to a smoothing of the surface due to the interfacial tension. This achieves a significantly smoother surface than with material-removing processes.
  • Such a counter holder for punch riveting devices with a vibration generator, for example an ultrasonic generator, is particularly advantageous.
  • a portion of the punch riveting apparatus is vibrated during the punch riveting operation so that the rivet can be more easily pressed into the components to be connected.
  • Just by the vibrations or the ultrasound can between the anvil and the adjacent component, a relative movement caused by which not only adhesions of material but also, for example. Alloys can arise in conventional counter-holders. In a counter-holder according to the invention this is no longer or at least hardly the case.
  • this is advantageous because there more and more often light metals such as aluminum are used.
  • the remelt-polished surface preferably has a thickness of at most 200 ⁇ m, in particular at most 100 ⁇ m. Such a thickness can be easily and quickly produced by remelting and is also sufficient for use in punch riveting devices.
  • the remelt-polished surface has a plurality of recesses, in particular regularly and / or irregularly arranged.
  • the recesses may substantially have a shape of a part of a spherical surface and / or a diameter of at most 500 ⁇ m and / or a depth of at most 100 ⁇ m.
  • the remelt-polished surface has a protective layer or sliding layer, in particular comprising or consisting of a DLC coating, ceramic or ceramic-like coating.
  • DLC is so-called “diamond-like carbon", for example a C2 or C3 layer.
  • Such a layer can be produced, for example, by bombarding a piece of carbon with a laser beam, so that the carbon atoms can deposit correspondingly on the surface of the counter-holder.
  • a ceramic-like coating for example, a zirconium layer can be used, which is applied, for example, by means of a sol-gel process.
  • a punch riveting apparatus 10 is shown at various stages of performing a punch riveting process.
  • the punch riveting device 10 has a punch 15 which is radially surrounded by a sleeve-shaped hold-down 16 and is arranged to be movable relative to the latter in the longitudinal direction.
  • the punch 15 is coupled to a drive, not shown here, for example a hydraulic or pneumatic drive, which serves to apply a force F required to press a rivet 20 into the two components 11, 12.
  • the hold-down 16 is adapted to press against the surface of the die 15 facing member 11 with a hold-down force.
  • a separate drive can be provided.
  • the hold-down can also be coupled to the drive of the punch 15, for example by means of a spring.
  • an inventive counter-holder 18 which acts as a die here, arranged.
  • the die 18 is also in the direction of a longitudinal axis 19, in the direction of which also the punch 15 and the hold-16 are arranged movable, raised and lowered.
  • 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 die 18 has, on the side facing the component 12, a region 21 with a flat surface from which a trough-shaped or recess 22 extends.
  • the rivet 20 preferably consists of a material which is harder than the materials of the two components 11, 12, at least in the region of the rivet shank 24.
  • the planar top side 26 facing away from the component 11 is arranged in operative connection with the ram 15, which is located at the top side 26 of FIG Rivet 20 is flat.
  • the punch 15 is operatively connected to a vibration generator 30 for generating vibrations.
  • a vibration generator 30 for generating vibrations.
  • ultrasonic vibrations with an amplitude (distance between maximum positive and negative amplitude of a vibration) between 10 .mu.m and 110 .mu.m (or an amplitude between 5 .mu.m and 55 .mu.m) and a frequency between 15 kHz and 35 kHz are generated.
  • vibrations are coupled by the vibrator 30 via the punch 15 in the rivet 20.
  • the coupling-in direction of the vibrations of the vibration generator 30 can take place, for example, parallel to the longitudinal axis 19, that is to say parallel to the joining direction of the rivet 20 into the components 11, 12.
  • FIG. 1a Phase shown represents a beginning of the Stanzniethabilits in which the rivet shank 24 comes into operative connection with the top of the component 11. In this case, the punch 15 is pressed with the force F against the stamp 15 facing member 11.
  • the rivet shank 24 initially cuts or punches into the component 11.
  • the two components 11, 12 are plastically deformed, wherein the recess 22 facing the component 12 is pressed in the corresponding areas in the recess 22.
  • the rivet shank 24 is spread outwards in the region of the recess 22, whereby the two components 11, 12 are securely connected to each other in the axial direction in a positive and non-positive manner.
  • FIG. 2 a sequence of a method according to the invention for producing a counter-holder in a preferred embodiment is shown.
  • a section of the counter-holder or the die 18 is shown, which consists of a base material 185.
  • This base material may, for example, be hardened tool steel.
  • the figure on the right shows a rough surface 181, as it exists before the method according to the invention, for example after a milling operation.
  • a laser beam 200 can now be moved over the surface of the die 18.
  • a melting area is formed on the surface 186, in which the base material is melted or remelted.
  • the laser beam can be performed with pulsed laser radiation, continuous laser radiation or in a combined variant in one or more crossings.
  • the jet speed can be 10 to 1000 mm / sec at a power of 20 to 500 W.
  • the spot diameter can be at least 10 ⁇ m.
  • the smoothing of the surface results from the interfacial tension.
  • the heat-affected zone 184 which is likewise shown, is formed during the remelting between the base material 185 and the remelting layer 183.
  • the thickness of the heat-affected zone is typically in the order of magnitude of the remelting zone.
  • FIG. 3 schematically shows a surface of a counter-holder according to the invention in a preferred embodiment.
  • a sliding or protective layer 190 is applied to the surface which has now been melt-coated, which may be, for example, DLC, ie "diamond-like carbon".
  • recesses 195 are provided on the surface of the die 18 . These recesses 195 can be obtained by, for example, suitably guiding the laser beam during laser polishing. These recesses may be provided on the surface, for example, at irregular intervals, both in the longitudinal and in the transverse direction.
  • a kind of pockets for lubricant which is applied to the surface of the matrix, are thus formed. This can prevent the lubricant from being removed too quickly.
  • Umschmelzpolieren incl The introduction of the wells can be done not only on a flat surface, but in particular on a surface with recesses, such as. In FIG. 1 in cross-section with the recess 22 is shown, can take place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Insertion Pins And Rivets (AREA)
EP16173027.0A 2015-07-31 2016-06-06 Dispositif de rivetage avec un outil contre-support et utilisation d'un tel outil Active EP3124133B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015214614.6A DE102015214614A1 (de) 2015-07-31 2015-07-31 Gegenhalter für eine Stanznietvorrichtung, Stanznietvorrichtung, Verwendung eines Gegenhalters und Verfahren zum Herstellen eines Gegenhalters

Publications (2)

Publication Number Publication Date
EP3124133A1 true EP3124133A1 (fr) 2017-02-01
EP3124133B1 EP3124133B1 (fr) 2019-08-07

Family

ID=56119335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16173027.0A Active EP3124133B1 (fr) 2015-07-31 2016-06-06 Dispositif de rivetage avec un outil contre-support et utilisation d'un tel outil

Country Status (2)

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EP (1) EP3124133B1 (fr)
DE (1) DE102015214614A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3098557A1 (fr) * 2019-07-12 2021-01-15 Renault S.A.S Bouterolle de rivetage à revêtement de surface antifriction

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017130449B4 (de) * 2017-12-14 2021-01-21 Schaeffler Technologies AG & Co. KG Stempelwerkzeug zum Reibnieten
DE102019114095A1 (de) * 2019-05-27 2020-12-03 Bayerische Motoren Werke Aktiengesellschaft Vereinzelungsvorrichtung für Nietelemente, Nietvorrichtung und Verfahren
DE102019128745A1 (de) * 2019-10-24 2021-04-29 Bayerische Motoren Werke Aktiengesellschaft Ultraschallschweißvorrichtung und Verfahren zum Ultraschallverschweißen von mindestens zwei Bauteilen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890397A1 (fr) * 1997-07-09 1999-01-13 Hahn, Ortwin, Prof. Dr.-Ing. Appareil et procédé de joindre Mécaniquement des tÔles, des profilés et/ou des connections de tÔles multiples
EP1177844A1 (fr) * 2000-08-05 2002-02-06 AVDEL VERBINDUNGSELEMENTE GmbH Dispositf pour joindre des pièces en tôle par rivetage autoperforant ou d'agrafage
DE10342750A1 (de) * 2003-09-16 2005-04-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Glätten und Polieren oder zum Strukturieren von Oberflächen mit Laserstrahlung
US20060081573A1 (en) * 2002-06-27 2006-04-20 Fraunhofer-Gesellschaft Zur Foderung Der Angewandten Forschung E.V. Method for smoothing and polishing surfaces by treating them with energetic radiation
JP2011212700A (ja) * 2010-03-31 2011-10-27 Nippon Steel Corp リベット接合方法
EP2318161B1 (fr) 2008-07-30 2014-04-30 Henrob Limited Appareil et procédé d'assemblage
DE102014203357A1 (de) 2014-02-25 2015-08-27 Henkel Ag & Co. Kgaa Darreichungseinheit für eine Masse

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038395B3 (de) * 2008-08-19 2009-11-05 Surcoatec International Ag Verfahren zum Glätten der Oberfläche eines Substrates unter Verwendung eines Lasers
DE102014203757B4 (de) * 2014-02-28 2022-03-31 Robert Bosch Gmbh Verfahren zum Verbinden wenigstens zweier Bauteile im Stanznietverfahren, Vorrichtung zum Durchführung des Verfahrens, Fertigungseinrichtung und Verwendung des Verfahrens

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890397A1 (fr) * 1997-07-09 1999-01-13 Hahn, Ortwin, Prof. Dr.-Ing. Appareil et procédé de joindre Mécaniquement des tÔles, des profilés et/ou des connections de tÔles multiples
EP1177844A1 (fr) * 2000-08-05 2002-02-06 AVDEL VERBINDUNGSELEMENTE GmbH Dispositf pour joindre des pièces en tôle par rivetage autoperforant ou d'agrafage
US20060081573A1 (en) * 2002-06-27 2006-04-20 Fraunhofer-Gesellschaft Zur Foderung Der Angewandten Forschung E.V. Method for smoothing and polishing surfaces by treating them with energetic radiation
DE10342750A1 (de) * 2003-09-16 2005-04-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Glätten und Polieren oder zum Strukturieren von Oberflächen mit Laserstrahlung
EP2318161B1 (fr) 2008-07-30 2014-04-30 Henrob Limited Appareil et procédé d'assemblage
JP2011212700A (ja) * 2010-03-31 2011-10-27 Nippon Steel Corp リベット接合方法
DE102014203357A1 (de) 2014-02-25 2015-08-27 Henkel Ag & Co. Kgaa Darreichungseinheit für eine Masse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3098557A1 (fr) * 2019-07-12 2021-01-15 Renault S.A.S Bouterolle de rivetage à revêtement de surface antifriction

Also Published As

Publication number Publication date
EP3124133B1 (fr) 2019-08-07
DE102015214614A1 (de) 2017-02-02

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