EP2603335B1 - Procédé et appareil de fabrication de rivets solides auto-perceurs - Google Patents

Procédé et appareil de fabrication de rivets solides auto-perceurs Download PDF

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Publication number
EP2603335B1
EP2603335B1 EP12740084.4A EP12740084A EP2603335B1 EP 2603335 B1 EP2603335 B1 EP 2603335B1 EP 12740084 A EP12740084 A EP 12740084A EP 2603335 B1 EP2603335 B1 EP 2603335B1
Authority
EP
European Patent Office
Prior art keywords
punch
wire
die
rivet
length
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
EP12740084.4A
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German (de)
English (en)
Other versions
EP2603335A1 (fr
Inventor
Karlheinz Munz
Ewald WENNEHORST
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.)
Nedschroef Altena GmbH
Original Assignee
Nedschroef Altena GmbH
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Publication date
Application filed by Nedschroef Altena GmbH filed Critical Nedschroef Altena GmbH
Publication of EP2603335A1 publication Critical patent/EP2603335A1/fr
Application granted granted Critical
Publication of EP2603335B1 publication Critical patent/EP2603335B1/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
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B21J13/025—Dies with parts moving along auxiliary lateral directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/58—Making machine elements rivets

Definitions

  • Punched rivets are used to join flat workpieces, especially sheet metal.
  • the punch rivet is pressed with the simultaneous formation of two punched holes with its shaft through the workpieces. Near its shank end, the shank has at least one shank groove in which the material of the lower workpiece seen in the punching direction is pressed during the punching process.
  • Support core 64 and thrust piece 66 are applied to the rear layer 67, which is penetrated by an ejector pin 68 which bears against the pressure piece 66. At its end opposite the pressure piece 66, the ejector pin 68 is held in a receptacle 69.
  • the pre-compressed wire piece 82 is subsequently positioned by means of the punch 4 between the shaped pieces 33 of the rivet mold 32.
  • the conical shoulder 421 of the insert 42 bears against the shaped pieces 33 and presses them against the spring force of the helical spring 25 along the conical leadthrough 311 in the direction of the intermediate sleeve 22 of the die 2, whereby the shaped pieces 33 are radially applied to the pre-compressed wire piece 82.
  • the pre-formed wire piece 82 is clamped between the mold pieces 33, wherein the preformed rivet head 831 rests on the shaped pieces 33.
  • the geometry of the underside of the preformed rivet head 831 corresponds to the geometry of the rivet head-side outlet of the rivet peripheral contour 321 formed by the shaped pieces 33 and rests on this.
  • the punch 4 is now removed from the die 2, wherein the shaped pieces 33 are moved by the restoring force of the coil spring 25 via the pressure pin receptacle 231 along the conical passage 311 of the retaining ring 31 upwards. As a result, the shaped pieces 33 are moved apart, whereby the finished Vollstanzniet 83 is released. The released Vollstanzniet 83 is now ejected via the pressure pin 23 from the die 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Forging (AREA)

Claims (7)

  1. Procédé de fabrication d'un rivet massif autoperceur dans lequel un segment de fil (8) sectionné est déformé via un outil (1), comprenant un poussoir (4) et une matrice (2), caractérisé en ce que le segment de fil (8) est serré entre des pièces de formage (33) agencées en mâchoires et pouvant être mises en applique radialement, pièces qui reproduisent le contour circonférentiel (321) du rivet et présentent au moins une gorge annulaire (322) formant une contre-dépouille, ensuite est appliquée une force axiale aux deux extrémités du segment de fil (8) via une tige de compression (23, 46) respective, ce qui oblige le matériau filaire à remplir, par fluage, le contour circonférentiel de rivet formé par les pièces de formage (33), sachant que le segment de fil (8), avant son serrage dans la matrice (2), subit un pré-refoulement au moyen d'un deuxième outil (5) comprenant une deuxième matrice (6) et un deuxième poussoir (7), et que le segment de fil pré-refoulé (82) continue d'être refoulé dans la deuxième matrice (6) au moyen du premier poussoir (4), sachant qu'à une extrémité du segment de fil (4) est formée une tête (831) faisant radialement saillie.
  2. Procédé selon la revendication 1, caractérisé en ce que le segment de fil (82) dont le refoulement s'est poursuivi est positionné entre les pièces de formage (33) serrables de la matrice (2) avant que ledit segment soit serré entre les pièces de formage (33), sachant que la tête (831) ainsi formée applique axialement sur les pièces de formage (33).
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce que les pièces de formage (33) pouvant être mises radialement en applique sont guidées de manière conique et axiale et en ce que les pièces de formage (33) sont déplacées axialement par le premier poussoir (4), ce qui a pour effet de serrer le segment de fil (8) entre les pièces de formage (33).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que la déformation du segment de fil (8) est une déformation à froid.
  5. Outil pour fabriquer un rivet autoperceur plein au moyen d'un procédé selon l'une des revendications précédentes, comprenant une matrice (2) et un poussoir (4) qui est déplaçable axialement en direction de la matrice (2), caractérisé en ce que la matrice (2) est formée par élément cadre (31) présentant un passage conique (311), passage dans lequel au moins trois pièces de formage (33) sont guidées pour être mises radialement en applique, pièces qui délimitent un contour circonférentiel (321) de rivet et présentent au moins une gorge annulaire (322) formant une contre-dépouille, sachant que les pièces de formage (33) sont précontraintes via des éléments ressorts (44) en direction du plus grand diamètre du cône de l'élément cadre (31), sachant que le poussoir (4) présente une partie (42) extérieure déplaçable axialement traversée coaxialement par une tige de poussée (46) intérieure déplaçable axialement, sachant que la pièce (42) de poussoir extérieure présente un talon conique (421) qui épouse le passage conique (211) en son extrémité d'un diamètre accru, sachant que la pièce (42) de poussoir extérieure est précontrainte dans le poussoir (4) via un ressort (26), sachant que la tige de poussée intérieure (46) est précontrainte par rapport à la pièce (42) de poussoir extérieure et sachant que la tige de poussée (46) intérieure est positionnable en face de la pièce (42) de poussoir extérieure de sorte que les deux pièces de poussoir délimitent un réceptacle recevant la tête d'un rivet (82) pré-refoulé.
  6. Outil selon la revendication 5, caractérisé en ce que l'élément cadre (31) présente au moins trois alésages (312) radiaux aboutissant dans le passage conique (311), passages dans lesquels des tiges ont été introduites pour guider axialement les pièces de formage (33).
  7. Outil selon la revendication 5 ou 6, caractérisé en ce que les pièces de formage (33) présentent des alésages latéraux (331) destinés à recevoir des tiges de guidage via lesquelles les pièces de formage sont reliées entre elles.
EP12740084.4A 2011-08-18 2012-07-02 Procédé et appareil de fabrication de rivets solides auto-perceurs Active EP2603335B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011110598A DE102011110598A1 (de) 2011-08-18 2011-08-18 Verfahren und Werkzeug zur Herstellung eines Vollstanznietes
PCT/EP2012/062799 WO2013023831A1 (fr) 2011-08-18 2012-07-02 Procédé et outil de fabrication d'un rivet auto-perforant

Publications (2)

Publication Number Publication Date
EP2603335A1 EP2603335A1 (fr) 2013-06-19
EP2603335B1 true EP2603335B1 (fr) 2013-10-16

Family

ID=46581917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12740084.4A Active EP2603335B1 (fr) 2011-08-18 2012-07-02 Procédé et appareil de fabrication de rivets solides auto-perceurs

Country Status (3)

Country Link
EP (1) EP2603335B1 (fr)
DE (1) DE102011110598A1 (fr)
WO (1) WO2013023831A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7034506B2 (ja) 2020-07-03 2022-03-14 三豊機工株式会社 冷間圧造工具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104057007B (zh) * 2014-06-16 2017-01-18 沈阳飞机工业（集团）有限公司 半扁圆头、平锥头铆钉用硬质合金阴模及其加工方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011009649A1 (de) * 2010-01-27 2011-07-28 TOX Pressotechnik GmbH & Co. KG, 88250 Verbindungselement und Herstellungsverfahren für ein Verbindungselement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5296317A (en) * 1992-09-03 1994-03-22 Water Gremlin Co. High torque battery terminal and method of making same
DE102004011846A1 (de) 2003-03-10 2004-09-23 Tox Pressotechnik Gmbh & Co. Kg Vorrichtung zur Zuführung von Hilfsfügeteilen
DE102004004233C5 (de) * 2004-01-27 2012-07-19 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Verfahren und Vorrichtung zur Herstellung einer Dehnschraube
DE102004059638B3 (de) * 2004-12-10 2006-08-03 Hilti Ag Vorrichtung und Verfahren zum Erzeugen einer Profilierung an einem Befestigungselement
EP2218981A3 (fr) 2009-02-11 2011-04-06 Bernhard Bauersachs Construction de montage
DE102009052879B4 (de) * 2009-11-13 2020-06-18 Kerb-Konus-Vertriebs-Gmbh Stanz-Prägeniet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011009649A1 (de) * 2010-01-27 2011-07-28 TOX Pressotechnik GmbH & Co. KG, 88250 Verbindungselement und Herstellungsverfahren für ein Verbindungselement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7034506B2 (ja) 2020-07-03 2022-03-14 三豊機工株式会社 冷間圧造工具

Also Published As

Publication number Publication date
WO2013023831A1 (fr) 2013-02-21
EP2603335A1 (fr) 2013-06-19
DE102011110598A1 (de) 2013-02-21

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