EP1951473A1 - Procede d'introduction et d'ancrage d'au moins un element de connexion dans une piece et dispositif destine a la mise en oeuvre de ce procede - Google Patents

Procede d'introduction et d'ancrage d'au moins un element de connexion dans une piece et dispositif destine a la mise en oeuvre de ce procede

Info

Publication number
EP1951473A1
EP1951473A1 EP06828549A EP06828549A EP1951473A1 EP 1951473 A1 EP1951473 A1 EP 1951473A1 EP 06828549 A EP06828549 A EP 06828549A EP 06828549 A EP06828549 A EP 06828549A EP 1951473 A1 EP1951473 A1 EP 1951473A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
centering
tool
search
connecting element
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.)
Withdrawn
Application number
EP06828549A
Other languages
German (de)
English (en)
Inventor
Heiko Schmidt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1951473A1 publication Critical patent/EP1951473A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • B23P19/062—Pierce nut setting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/10—Aligning parts to be fitted together
    • 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
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49945—Assembling or joining by driven force fit

Definitions

  • the invention relates to a method according to the preamble of claim 1 and to an apparatus for performing the method according to the preamble of claim 14.
  • connecting elements for example in the form of press nuts or bolts in workpieces of a permanently deformable material (eg metal sheet) by joining and pressing
  • a permanently deformable material eg metal sheet
  • joining and pressing takes place for example in a press using a punching head and an associated die in the manner that the respective connecting element with an anchoring portion in a joining opening in the workpiece used (joining) and then by pressing, ie is anchored by permanent deformation of the material of the workpiece.
  • stamped nuts in workpieces. In this case, the respective joining opening is generated in the by the mother by punching. The connection is again made by pressing.
  • the handling in particular the insertion of the workpieces into the respective tool by mechanical handling devices, such as robots on which the workpieces are firmly clamped during the joining and pressing of the connecting elements.
  • mechanical handling devices such as robots on which the workpieces are firmly clamped during the joining and pressing of the connecting elements.
  • Such handling devices have relatively large positioning tolerances, so that even in the positioning of the connecting elements in the workpieces relatively large tolerances must be accepted.
  • the object of the invention is to provide a method which, in spite of the unavoidable tolerances of mechanical handling devices, for example robots, enables a very accurate positioning of the connecting elements in workpieces.
  • a method according to claim 1 is formed.
  • An apparatus for carrying out this method is the subject of claim 14.
  • the particular advantage of the invention is that positioning inaccuracies of the mechanical handling devices when inserting workpieces in tools for introducing fasteners by aligning the respective workpiece relative to the tool used for the introduction of the connecting elements is eliminated and thus positioning of the connecting elements in the workpieces with high accuracy is possible.
  • At least one tool part of the tool used for introducing the connecting elements is aligned relative to the workpiece, specifically with reference to a reference element provided in the workpiece for aligning, for example, at least one Opening is formed in the workpiece.
  • This opening is then e.g. the joining opening for the relevant connecting element or else a centering opening which is exactly associated with the respective joining and connecting position for the connecting element.
  • an alignment of the respective workpiece during insertion or after insertion into the tool takes place, specifically in that the holder of the workpiece is loosened at least temporarily at the mechanical handling device.
  • the holder of the workpiece is loosened at least temporarily at the mechanical handling device.
  • 1 is a workpiece made of sheet metal in which a connecting element in the form of a nut 2 is to be accurately positioned and anchored.
  • the nut 2 consists in a known manner from a flat, cylindrical nut body 2.1, for example, which is provided on a front side 2.2 with a likewise circular cylindrical projection or collar 2.3, the peripheral surface is coaxially aligned with the axis MA of the body 2.1 and the nut 2 and is provided with a ring-groove-like undercut 3.
  • the nut 2 is further formed with a continuous, coaxial with the axis MA mother thread opening 4.
  • a joining opening 5 is provided, whose diameter is equal to the outer diameter of the collar 2.3 and in which the nut 2 is inserted with the collar 2.3.
  • the anchoring of the nut 2 in the workpiece 1 is then carried out in a known manner by pressing, ie by permanent deformation of the material of the workpiece 1 in the undercut 3, with the aid of a Verpressstempels or plugers 6, on the workpiece 1 facing away from the top Nut 2 acts, as well as with the aid of a die 7, which forms an opening 5 surrounding annular support surface for the mother body 2.1 facing away underside of the workpiece 1 in the region of the joint opening 5 ( Figure 2).
  • the grout 6 and the die 7 are parts of the joining and grooving tool 8.
  • a search or positioning pin 9 is provided in the embodiment shown in FIG. 1, in the annular die 7 or in a die opening 7.1 there against the effect of at least one compression spring is arranged lOaxial displaceable.
  • the diameter of the die opening 7.1 is equal to or approximately equal to the diameter of the opening.
  • the search and center pin 9 is at a relaxed spring 10 with its upper end in the figure 2 on the plane of the top of the die 7, against the (plane) the workpiece 1 rests with its underside during joining and pressing the nut 2.
  • the search and centering pin 9 initially forms a circular-cylindrical section 9.1, the diameter of which is equal to the diameter of the joint opening 5, and subsequently a section 9.2 tapering towards the free end ,
  • the workpiece 1 is first held with a mechanical device, ie eg holders or gripping arms of a robot or other mechanical handling device inserted into the tool 8 and deposited on the die 7, wherein the search and centering pin 9 in the joining opening 5 is inserted.
  • a mechanical device ie eg holders or gripping arms of a robot or other mechanical handling device inserted into the tool 8 and deposited on the die 7, wherein the search and centering pin 9 in the joining opening 5 is inserted.
  • the die 7 in this embodiment is thus provided radially to the die or tool axis WA1 in the tool 8, as indicated by the double arrow A in FIG.
  • the feeding of the nut 2 takes place with the sinking press ram 6.
  • the nut 2 is in this case, for example, on the end face of the ram 6 in a suitable manner, e.g. held by means of permanent magnets 11 or otherwise, for example by means of negative pressure, etc.
  • the tapered portion 9.2 enters the nut thread opening 4, so that the nut 2 before joining, i. before introducing the collar 2.3 aligns in the joining opening 5 of the workpiece 1 by moving radially to the nut axis MA, as indicated by the double arrow B.
  • FIG. 3 shows an embodiment which differs from the embodiment of FIG.
  • the two tool parts for example, via a frame structure or other suitable manner, at least when closing the tool connected to each other, as indicated by the line 11.
  • the procedure in the joining and compression of the nut 2 in the workpiece 1 corresponds to the procedure described above for the tool 8, i. when inserting the workpiece 1 in the tool 8a by sliding the joining opening 5 on the search and centering pin 9 turn the lower tool part, namely the die 7 is aligned by radial displacement with its axis with respect to the axis of the opening 5.
  • the press ram 6 when closing the tool 8a, i. when lowering the upper, the press ram 6 having tool part also this aligned by the connection with the lower tool part by radial displacement to the tool axis WA with respect to the axis of the opening 5.
  • FIG. 4 shows, as a further possible embodiment, a tool 8b, which differs from the tool 8 or 8a essentially in that, instead of the search and centering pin 9, the alignment of the lower tool part or the die 7 and the nut 2 effected in relation to the opening 5 in the workpiece 1, two search and centering pins 12 are provided which cooperate with centering openings 13 which are provided in the workpiece 1 outside the opening 5 and associated therewith. It is understood that the centering openings 13 have an exact arrangement relative to one another, in particular also relative to the axis of the associated opening 5. Instead of the die 7, a die 14 is used, which in turn forms a bearing surface for the mother body 2.1 facing away underside of the workpiece 1 when pressing the nut 2 in the opening 5 of the workpiece 1.
  • axially displaceable another search and centering pin 15 which forms a frusto-conical tapered portion 15.1 at least at its at relieved spring on the die 14 projecting end whose maximum diameter is equal to or slightly larger
  • the die 14 is in turn provided with a die opening 14.1, the diameter of this embodiment, however, is smaller than the diameter of the opening 5 and the cross section of the search and centering pin 15 corresponds, so that when Pressing the die 14, the workpiece 1 not only at the opening 5 enclosing the edge region is supported, but also extends the die surface in the opening 5.
  • the workpiece 1 When introducing the in a mechanical handling device, such as robot firmly clamped workpiece 1 in the open tool 8b, the workpiece 1 is placed with its centering 13 on the search and centering 12, which are provided on the lower tool part or on the die 14. In this case, this lower tool part 14 is again aligned by displacement radially to its tool axis WA1 with respect to the centering openings 13 and thus with respect to the axis of the opening 5.
  • FIG. 5 shows a tool 8c, which differs from the tool 8b in that also the upper tool part represented by the press ram 6 is centered relative to the common tool axis WA, again via the search and centering pins engaging in the centering openings 13 12 and by movable arrangement of both tool parts radially to the tool axis WA.
  • the upper and lower tool parts are in turn here at least when closing the tool for this radial movement connected to each other, as indicated in turn by the line 16.
  • the search and centering pin 15 can be omitted in the tool 8c.
  • FIG. 6 shows, in a very simplified representation, a device 8d for inserting a rivet nut or blind rivet nut 17 into the opening 5 of the workpiece 1.
  • a tool element 18 is provided which has the usual configuration for processing rivet nuts.
  • search and centering pins 12 are provided.
  • the tool element 18 is again shifted with the spun on this rivet nut 17 radially to the axis of the rivet nut 17 such that the axis the rivet nut 17 is then coaxially aligned with the axis of the opening 5. Then the joining and riveting takes place.
  • At least one tool part is provided so as to be movable radially relative to the axis of its tool axis and centered during insertion of the workpiece 1 with respect to the axis of the opening 5, so that joining, ie insertion of the respective connecting element into the opening 5 of the workpiece 1 can be done with clamped workpiece without stresses occur in the workpiece.
  • the above-described embodiments also make it possible to introduce a plurality of connecting elements, for example a plurality of nuts 2 or more rivet nuts 17 simultaneously and precisely positioned in a single operation in a workpiece 1, in which case the tool used for each connecting element from at least one by the search and centering pin. 9 or the search and centering pins 12 by moving radially to its tool axis centerable tool part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)

Abstract

L'invention concerne un procédé d'introduction d'au moins un élément de connexion (2, 17) dans une pièce (1) par l'intermédiaire d'au moins un outil monopièce. Avant assemblage et connexion de l'élément de connexion à la pièce (1), on procède à une orientation exacte en position de l'outil (8, 8a, 8b, 8c, 8d) par rapport à la pièce (1) par l'intermédiaire d'au moins un élément de recherche et/ou de centrage (9, 12) adjacent à une zone de centrage (5, 13) de la pièce (1), par mouvement relatif entre la partie d'outil (14, 18) et la pièce (1). L'invention concerne également un dispositif correspondant.
EP06828549A 2005-11-24 2006-11-21 Procede d'introduction et d'ancrage d'au moins un element de connexion dans une piece et dispositif destine a la mise en oeuvre de ce procede Withdrawn EP1951473A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005056378A DE102005056378A1 (de) 2005-11-24 2005-11-24 Verfahren zum Einbringen und Verankern wenigstens eines Verbindungselementes in einem Werkstück sowie Vorrichtung zum Durchführen des Verfahrens
PCT/DE2006/002045 WO2007059742A1 (fr) 2005-11-24 2006-11-21 Procede d'introduction et d'ancrage d'au moins un element de connexion dans une piece et dispositif destine a la mise en oeuvre de ce procede

Publications (1)

Publication Number Publication Date
EP1951473A1 true EP1951473A1 (fr) 2008-08-06

Family

ID=37745819

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06828549A Withdrawn EP1951473A1 (fr) 2005-11-24 2006-11-21 Procede d'introduction et d'ancrage d'au moins un element de connexion dans une piece et dispositif destine a la mise en oeuvre de ce procede

Country Status (5)

Country Link
US (1) US20090217506A1 (fr)
EP (1) EP1951473A1 (fr)
CA (1) CA2630632A1 (fr)
DE (1) DE102005056378A1 (fr)
WO (1) WO2007059742A1 (fr)

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ES2776709T3 (es) 2007-11-21 2020-07-31 Smith & Nephew Apósito para heridas
DE102008032694A1 (de) 2008-07-03 2010-01-07 Arnold & Shinjo Gmbh & Co. Kg Vorrichtung zum Einpressen von Befestigungselementen
US9061095B2 (en) 2010-04-27 2015-06-23 Smith & Nephew Plc Wound dressing and method of use
DE102013010493A1 (de) * 2013-06-25 2015-01-08 Tox Pressotechnik Gmbh & Co. Kg Vorrichtung und Verfahren zur automatisierten Ausbildung einer Fügeverbindung
JP6208478B2 (ja) * 2013-06-25 2017-10-04 株式会社小糸製作所 製造方法
DE102014209393B4 (de) 2014-05-19 2016-02-04 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Verfahren zum maschinellen Bearbeiten eines plattenartigen Werkstücks, insbesondere einer Blechtafel
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Also Published As

Publication number Publication date
DE102005056378A1 (de) 2007-05-31
CA2630632A1 (fr) 2007-05-31
US20090217506A1 (en) 2009-09-03
WO2007059742A1 (fr) 2007-05-31

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