EP1385649B1 - Tool for the mechanical connection of plates - Google Patents

Tool for the mechanical connection of plates Download PDF

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Publication number
EP1385649B1
EP1385649B1 EP02732422A EP02732422A EP1385649B1 EP 1385649 B1 EP1385649 B1 EP 1385649B1 EP 02732422 A EP02732422 A EP 02732422A EP 02732422 A EP02732422 A EP 02732422A EP 1385649 B1 EP1385649 B1 EP 1385649B1
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EP
European Patent Office
Prior art keywords
plates
die
tool
stamp
connection
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.)
Expired - Lifetime
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EP02732422A
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German (de)
French (fr)
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EP1385649A1 (en
Inventor
Eugen Rapp
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.)
Tox Pressotechnik GmbH and Co KG
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Tox Pressotechnik GmbH and Co KG
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Publication of EP1385649A1 publication Critical patent/EP1385649A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
    • 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
    • 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
    • Y10T29/49908—Joining by deforming
    • Y10T29/49936—Surface interlocking
    • 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
    • Y10T29/5343—Means to drive self-piercing work part
    • 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
    • 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
    • Y10T29/53996—Means to assemble or disassemble by deforming

Definitions

  • the invention is based on a tool for the mechanical processing of plates for their interconnection (clinching or the like) by means of a punch and a die according to the preamble of claims 1 and 2.
  • the sheets are first deep drawn by means of pins and die without piercing and it is then greased the edge of the bottom of the deep-drawn sheet metal sections radially against the resilient walls, creating a tight anchorage that looks outwardly similar to a rivet, which of course also optical advantages Has. Since the side walls are pivoted apart on the side facing the sheets during radial crimping, however, a difficult to control displacement of the support of the sheets on the die results.
  • the punch has a pin of smaller diameter, are deep drawn through the plates to be joined together in a blind bore of a die and squeezed so as to achieve a firm connection between the plates .
  • stamp and die existing tools are used for pressing, punching or the like. of plates, i.a. also for joining parts to plates (DE OS 19913695).
  • the service life of the tools used here corresponds to the use and the requirements of the tool material and is in many cases unsatisfactorily low.
  • the cost of producing the tools is very high, as they must have a total of a corresponding hardness in the claimed range (US Patent No. 5,177,861).
  • such hardnesses can lead to breakage of the tool, especially if an often required significant longitudinal extension is given transversely to the working direction thereof.
  • Because of the bracket is also a minimum longitudinal extension in Working direction required, ie, due to these circumstances stamp and die, with such required for a long service life hardness, have a certain tendency to fracture, such a breakage can have disastrous consequences.
  • the tool is used in mass production in the connection of sheets in motor vehicles, such defects have devastating consequences.
  • the aim is a tool with optimum life, with extremely favorable hardness and only a small tendency to breakage.
  • the tool according to the invention with the characterizing features of claim 1 or 2 has the advantage that only the part that is actually required for machining, namely the insert has the desired hardness and due to its design undergoes less or no breaking stress, while the other Part, namely the receiving part, according to its purpose of softer and may consist of elastic material.
  • the other Part namely the receiving part, according to its purpose of softer and may consist of elastic material.
  • cross-sections of the die and / or die, which transfer the labor especially are larger than those of the insert part, so that larger cross-sections of more elastic material can advantageously be present in the invention for force transmission and smaller cross-sections serve for the actual plate processing, with corresponding cross-sections material hardness.
  • the invention can thus be used either on the stamp side or on the die side, or on both sides.
  • punch and / or die are formed transversely to the drive direction (to the working direction) divided to thereby achieve a sufficient positive engagement and thus given adhesion.
  • the side walls of the recess formed as a blind opening a radial distance to the lateral surfaces of the pin of the punch and extend in the direction of movement of the punch.
  • the positive connection between insert and receiving part is advantageously carried out in which the recess or bore as a bore. is formed, in which the corresponding insert part with the end facing it can be inserted or used.
  • the edges of the insert part may be chamfered or rounded in order to achieve a simpler insertion.
  • the positive connection between insert and receiving part is formed as a press connection, d. H. a radial pressure exists between the inner wall of the recess and the lateral surface of the insert part.
  • connection between receiving part and insert is formed rotationally.
  • This rotational fit can be achieved by simply flattening the circular cross section underlying the AufEnglishung.
  • the tool is used for rivet-like joining of components such as plates, bolts, nuts or the like, with a plate using a die stamped before, stampable in the plate lost punch which is driven by serving as a tool die insert part and which remains in the plate after processing (DE-OS 19913695).
  • the tool according to the invention with tool holders in an exploded view, but without the inclusion of the same in the machine tool itself, shown, between two a stamp 1 and a die 2, two sheets 3 to be joined together are arranged.
  • the stamp 1 is down actuated and pulls with a arranged at its end pin 4, the corresponding acted portions of the sheets 3 in a recess 5 of the die 2 to crush this deep drawn sheet metal sections also radially when continuing the stroke, so that a rear engagement of the deep-drawn and crushed plate sections takes place , whereby a firm connection between the plates 3 is created by this clinching.
  • the punch 1 is arranged on a tool holder 6 in the machine tool, not shown here, and consists of two parts, namely a receiving part 7 and a pin 4 having insert 8. Due to the higher stress, the insert 8 with pin 4 has a much higher hardness 6, receiving part 7 and insert part 8 are connected to each other via a press connection 9, wherein the upper end of the insert part 8 in a recess 10 of the receiving part 7 form-fitting manner is plugged and is suitable to absorb high forces. As a rotation between insert 8 and receiving part 7 serves a flattening 11, on which in the recess 10 projecting end portion of the insert part. 8
  • the die 2 which is also arranged in a tool holder 6, is formed in two parts, consisting of a recess 5 having receiving part 12 and a pressed-in recess 5 stopper 13, for better insertion into the recess 5 on its underside a fold 14 has. On its upper side, a fold 15 may also be provided, so that finally a favorable for the production bead 16 is formed.
  • the remainder of the recess 5 is used in a known manner as a deep-drawn hole 17 of the die 2. The bottom of this deep-drawn hole 17 is thus formed by the plug 13, which is also a significant greater material hardness than the receiving part 12 of this die.
  • the tool holder 6 has in each case one connected to the machine tool base member 18, in which punch 1, or die 2 are used and held by union nuts 19, or spring plate 20, and springs 21 in their working position.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Connection Of Plates (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Drilling Tools (AREA)
  • Insertion Pins And Rivets (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

The tool, for bonding two plates together, has a punch (1) and a die (2) each as two-part structures with a positive fit between the two parts. One part (8, 13), as a tool which acts directly on the plate workpieces (3), is of a harder material than the other part (7, 12) which acts as a tool holder. The punch and die are divided into their two parts across the working direction.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Werkzeug zum mechanischen Bearbeiten von Platten zu deren Miteinanderverbinden (Durchsetzfügen odgl.) mittels einem Stempel und einer Matrize nach der Gattung der Ansprüche 1 und 2.The invention is based on a tool for the mechanical processing of plates for their interconnection (clinching or the like) by means of a punch and a die according to the preamble of claims 1 and 2.

Durch die US-Patentschrift 5,177,861 ist ein derartiges Werkzeug bekannt, allerdings mit der Zielsetzung ein neues Verbindungsverfahren zu entwickeln, was flüssigkeitsdicht macht, eine gute Verbindung herstellt und optisch attraktiv ist. Um dies zu erreichen ist jenes Werkzeug sehr aufwendig gestaltet. Die Seitenwände der Ausnehmung der Matrize weisen eine radiale Nachgiebigkeit auf, wobei die Lagerung der die Seitenwände der Matrize darstellenden Segmente auch die hohen Tiefziehkräfte aufnehmen muss, wobei eine solche Schwenklagerung empfindlich ist. Die Matrize ist laut Ausführungen in dieser US-Patentschrift insgesamt gehärtet ausgebildet, was bei Werkzeugen dieser Art, im Vergleich zu der sie tragenden Werkzeugaufnahme, ohnehin meist der Fall ist. Die Bleche werden zuerst mit Hilfe von Zapfen und Matrize ohne Durchstoßen tiefgezogen und es wird danach der Rand des Bodens der tiefgezogenen Blechabschnitte radial gegen die nachgiebigen Wände verguetscht, wodurch eine dichte Verankerung entsteht, die äußerlich ähnlich wie ein Niet aussieht, was natürlich auch optische Vorteile hat. Da beim radialen Verquetschen die Seitenwände auf der den Blechen zugewandten Seite auseinandergeschwenkt werden, ergibt sich allerdings eine schwer kontrollierbare Verschiebung der Auflage der Bleche an der Matrize.Such a tool is known from US Pat. No. 5,177,861, but with the aim of developing a new connection method, which makes it liquid-tight, makes a good connection and is visually attractive. To achieve this, that tool is very elaborately designed. The side walls of the recess of the die have a radial compliance, wherein the storage of the side walls of the die representing segments must also take the high thermoforming forces, such a pivot bearing is sensitive. The die is as stated in this US patent hardened overall, which is usually the case with tools of this type, in comparison to the tool holder carrying them anyway. The sheets are first deep drawn by means of pins and die without piercing and it is then greased the edge of the bottom of the deep-drawn sheet metal sections radially against the resilient walls, creating a tight anchorage that looks outwardly similar to a rivet, which of course also optical advantages Has. Since the side walls are pivoted apart on the side facing the sheets during radial crimping, however, a difficult to control displacement of the support of the sheets on the die results.

Bei einem anderen bekannten dem Durchsetzfügen dienenden Werkzeug (DE-PS 3710929), weist der Stempel einen Zapfen kleineren Durchmessers auf, durch den miteinander zu verbindende Platten in eine Sackbohrung einer Matrize tiefgezogen und verquetscht werden, um so eine feste Verbindung zwischen den Platten zu erzielen. Es sind auch andere Verfahren bekannt, bei denen aus Stempel und Matrize bestehende Werkzeuge eingesetzt werden, die zum Pressen, Stanzen odgl. von Platten dienen, u.a. auch zum Verbinden von Teilen an Platten (DE OS 19913695).In another known the clinching tool (DE-PS 3710929), the punch has a pin of smaller diameter, are deep drawn through the plates to be joined together in a blind bore of a die and squeezed so as to achieve a firm connection between the plates , There are also other methods are known in which from stamp and die existing tools are used for pressing, punching or the like. of plates, i.a. also for joining parts to plates (DE OS 19913695).

So ist es auch bekannt, bei einer Fügeverbindung stempelseitig und/oder matrizenscitig die Werkzeuge d.h. Stempel und Matrize stark abzukühlen, um dadurch auch Platten miteinander verbinden zu können, die zumindest teilweise aus Polymeren bestehen oder Polymere enthalten (DE-OS 19752201). Hierdurch wird bei der Verarbeitung von Platten aus viskoseelastischen Werkstoffen, wie Polymeren, Kautschuk usw. mit anderen Werkstoffen, wie beispielsweise Metall, erreicht, dass ähnliche physikalische Vorraussetzungen bestehen, die dann eine solche Verbindung ermöglichen. Derartige mehrteilige Werkzeuge sind natürlich aufwendig und werden nur bei entsprechendem Zweck bzw. entsprechender Notwendigkeit eingesetzt.Thus, it is also known, in the case of a joining connection on the punch side and / or matrix side, to strongly cool the tools, ie punches and dies, in order also to be able to join plates which at least partially consist of polymers or contain polymers (DE-OS 19752201). As a result, in the processing of sheets of visco-elastic materials, such as polymers, rubber, etc. with others Materials, such as metal, achieve similar physical prerequisites that allow such a connection. Such multi-part tools are of course expensive and are used only for a corresponding purpose or corresponding need.

Bei wieder einem anderen bekannten Verfahren (DE-OS 10006789), wird besonders auf die Aufnahme des Werkzeuges insgesamt, also des Stempels oder der Matrize, in der Werkzeugaufnahme der Werkzeugmaschine geachtet, mit dem Ziel einer günstigen Auswechslung dieser Werkzeuge, wofür eine entsprechende radiale Verschiebbarkeit vorgesehen ist.In yet another known method (DE-OS 10006789), particular attention is paid to the inclusion of the tool as a whole, so the punch or the die in the tool holder of the machine tool, with the aim of a favorable replacement of these tools, for which a corresponding radial displacement is provided.

Die Standzeit der dabei eingesetzten Werkzeuge entspricht dem Einsatz und den Anforderungen des Werkzeugmaterials und ist in vielen Fällen unbefriedigend niedrig. Um den geltenden Standard zu erreichen, ist der Aufwand für die Herstellung der Werkzeuge sehr hoch, da diese insgesamt eine entsprechende Härte im beanspruchten Bereich aufweisen müssen (US-PS 5,177,861). Andererseits können solche Härten zum Brechen des Werkzeugs führen, besonders dann, wenn eine oft erforderliche erhebliche Längserstreckung quer zur Arbeitsrichtung desselben gegeben ist. Wegen der Halterung ist zudem eine Mindestlängserstreckung in Arbeitsrichtung erforderlich, d.h., dass aufgrund dieser Gegebenheiten Stempel und Matrize, bei einer solchen für eine hohe Standzeit erforderlichen Härte, eine gewisse Bruchneigung aufweisen, wobei ein solcher Bruch verheerende Folgen haben kann. Besonders dann, wenn das Werkzeug in der Serienproduktion bei der Verbindung von Blechen bei Kraftfahrzeugen eingesetzt wird, haben solche Mängel verheerende Folgen.The service life of the tools used here corresponds to the use and the requirements of the tool material and is in many cases unsatisfactorily low. In order to achieve the applicable standard, the cost of producing the tools is very high, as they must have a total of a corresponding hardness in the claimed range (US Patent No. 5,177,861). On the other hand, such hardnesses can lead to breakage of the tool, especially if an often required significant longitudinal extension is given transversely to the working direction thereof. Because of the bracket is also a minimum longitudinal extension in Working direction required, ie, due to these circumstances stamp and die, with such required for a long service life hardness, have a certain tendency to fracture, such a breakage can have disastrous consequences. Especially when the tool is used in mass production in the connection of sheets in motor vehicles, such defects have devastating consequences.

Der Erfindung zugrundeliegende AufgabeThe problem underlying the invention

Angestrebt ist ein Werkzeug mit optimaler Lebensdauer, bei äußerst günstiger Härte und nur geringer Bruchneigung.The aim is a tool with optimum life, with extremely favorable hardness and only a small tendency to breakage.

Die Erfindung und Ihre VorteileThe invention and its advantages

Das erfindungsgemäße Werkzeug mit den kennzeichnenden Merkmalen des Anspruchs 1 bzw. 2 hat den Vorteil, dass nur der Teil, der tatsächlich für die Bearbeitung erforderlich ist, nämlich der Einsatzteil die gewünschte Härte aufweist und aufgrund seiner Ausgestaltung weniger oder keine Bruchbeanspruchung erfährt, während der andere Teil, nämlich der Aufnahmeteil, entsprechend seinem Zweck aus weicherem und elastischerem Material bestehen kann. Trotz der Zweiteilung von Matrize und/oder stempel in Aufnahmeteil und Einsatzteil ist der Herstellungsaufwand des kompletten Werkzeugs, insbesondere in Abwägung des oben beschriebenen Risikos, günstiger als beim vergleichbaren Stand der Technik. Hinzu kommt, dass die besonders die Arbeitskräfte übertragenden Querschnitte von Matrize und/oder Stempel größer sind, als die des Einsatzteils, so dass bei der Erfindung vorteilhafterweise zur Kraftübertragung größere Querschnitte aus elastischerem Material vorhanden sein können und zur eigentlichen Plattenbearbeitung kleinere Querschnitte dienen, mit entsprechender Materialhärte.The tool according to the invention with the characterizing features of claim 1 or 2 has the advantage that only the part that is actually required for machining, namely the insert has the desired hardness and due to its design undergoes less or no breaking stress, while the other Part, namely the receiving part, according to its purpose of softer and may consist of elastic material. Despite the division of die and / or stamp in receiving part and insert part of the manufacturing cost of the complete tool, especially in consideration of the risk described above, cheaper than the comparable prior art. In addition, the cross-sections of the die and / or die, which transfer the labor especially, are larger than those of the insert part, so that larger cross-sections of more elastic material can advantageously be present in the invention for force transmission and smaller cross-sections serve for the actual plate processing, with corresponding cross-sections material hardness.

Je nach Art des Werkzeugs kann die Erfindung somit entweder auf der Stempelseite oder auf der Matrizenseite, oder auf beiden Seiten, Anwendung finden.Depending on the type of tool, the invention can thus be used either on the stamp side or on the die side, or on both sides.

Bei der Gestaltung der Erfindung sind Stempel und/oder Matrize quer zur Antriebsrichtung (zur Arbeitsrichtung) geteilt ausgebildet, um dadurch einen ausreichenden Formschluss bzw. damit gegebenen Kraftschluss zu erzielen. Hierbei ist es unproblematisch, die in Arbeitsrichtung einander gegenüberliegenden Flächen von Einsatzteil und Aufnahmeteil so groß zu gestalten, dass keine Überbeanspruchung, vor allem an der Fläche des Aufnahmeteils, entsteht.In the design of the invention punch and / or die are formed transversely to the drive direction (to the working direction) divided to thereby achieve a sufficient positive engagement and thus given adhesion. In this case, it is not a problem to make the surfaces of the insert part and the receiving part that are opposite one another in the working direction so large that no overstress arises, especially on the surface of the receiving part.

Nach einer vorteilhaften Ausgestaltung der Erfindung weisen die Seitenwände der als Sacköffnung ausgebildeten Ausnehmung einen radialen Abstand zu den Mantelflächen des Zapfens des Stempels auf und verlaufen in Bewegungsrichtung des Stempels. Eine solche Gestaltung und Zuordnung von Stempel und Matrize ist an sich bekannt (EP 0215449), allerdings mit den Eingangs genannten Nachteilen des Standes der Technik. Durch den Einsatz der Erfindung wird hier ein erheblicher Fortschritt erzielt, da bekanntlich beim Tiefziehen und nachfolgenden Verquetschen der Plattenanteile die in Arbeitsrichtung gehende Belastung außerordentlich hoch ist, hingegen die radialen Widerstandskräfte wesentlich geringer sein können.According to an advantageous embodiment of the invention, the side walls of the recess formed as a blind opening a radial distance to the lateral surfaces of the pin of the punch and extend in the direction of movement of the punch. Such a design and assignment of punch and die is known per se (EP 0215449), but with the aforementioned disadvantages of the prior art. Through the use of the invention, a considerable progress is achieved here, since it is well known that during deep drawing and subsequent squeezing of the plate portions, the load going in the working direction is extraordinarily high, whereas the radial resistance forces can be substantially lower.

Die formschlüssige Verbindung zwischen Einsatzteil und Aufnahmeteil erfolgt vorteilhafterweise, in dem die Ausnehmung als Bohrung odgl. ausgebildet ist, in welche das entsprechende Einsatzteil mit dem ihm zugewandten Ende einsteckbar bzw. einsetzbar ist. Hierbei können die Kanten des Einsatzteils abgeschrägt oder abgerundet sein, um ein einfacheres Einführen zu erzielen.The positive connection between insert and receiving part is advantageously carried out in which the recess or bore as a bore. is formed, in which the corresponding insert part with the end facing it can be inserted or used. In this case, the edges of the insert part may be chamfered or rounded in order to achieve a simpler insertion.

Nach einer vorteilhaften Ausgestaltung der Erfindung ist die formschlüssige Verbindung zwischen Einsatzteil und Aufnahmeteil als Pressverbindung ausgebildet, d. h. dass eine radiale Pressung zwischen Innenwand der Ausnehmung und Mantelfläche des Einsatzteils besteht.According to an advantageous embodiment of the invention, the positive connection between insert and receiving part is formed as a press connection, d. H. a radial pressure exists between the inner wall of the recess and the lateral surface of the insert part.

Nach einer zusätzlichen vorteilhaften Ausgestaltung der Erfindung ist die Verbindung zwischen Aufnahmeteil und Einsatzteil verdrehschlüssig ausgebildet. Diese Drehschlüssigkeit kann durch einfaches Abflachen des der Aufnehmung zugrunde liegenden Kreisquerschnitts erzielt werden.According to an additional advantageous embodiment of the invention, the connection between receiving part and insert is formed rotationally. This rotational fit can be achieved by simply flattening the circular cross section underlying the Aufnehmung.

Nach einer anderen speziellen Ausgestaltung der Erfindung dient das Werkzeug zum nietartigen Verbinden von Bauteilen wie Platten, Bolzen, Muttern odgl., mit einer Platte unter Verwendung eines dem Werkzeugstempel vorgeschalteten, in die Platte pressbaren verlorenen Stempels welches durch den als Werkzeugstempel dienenden Einsatzteil eingetrieben wird und der nach der Bearbeitung in der Platte verbleibt (DE-OS 19913695).According to another specific embodiment of the invention, the tool is used for rivet-like joining of components such as plates, bolts, nuts or the like, with a plate using a die stamped before, stampable in the plate lost punch which is driven by serving as a tool die insert part and which remains in the plate after processing (DE-OS 19913695).

Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung, der Zeichnung und den Ansprüchen entnehmbar.Further advantages and advantageous embodiments of the invention are the following description, the drawings and claims removed.

Zeichnungdrawing

Ein Ausführungsbeispiel des Gegenstandes der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigen:

Figur 1
einen Teillängsschnitt durch Stempel, Matrize und Werkzeughalter in Explosionsdarstellung, zum Teil entsprechend der Linie I-I in Figur 2 und
Figur 2
einen Querschnitt entsprechend der Linie II-II in Figur 1.
An embodiment of the object of the invention is illustrated in the drawing and will be described in more detail below. Show it:
FIG. 1
a partial longitudinal section through punch, die and tool holder in an exploded view, partly corresponding to the line II in Figure 2 and
FIG. 2
a cross section along the line II-II in Figure 1.

Beschreibung des AusführungsbeispielsDescription of the embodiment

In der Zeichnung ist das erfindungsgemäße Werkzeug mit Werkzeughaltern in Explosionsdarstellung, aber ohne die Aufnahme derselben in der Werkzeugmaschine selbst, gezeigt, wobei zwischen einem Stempel 1 und einer Matrize 2 zwei miteinander zu verbindende Bleche 3 angeordnet sind. Um die Bleche miteinander zu verbinden, wird der Stempel 1 nach unten betätigt und zieht mit einem an seinem Ende angeordneten Zapfen 4 die entsprechend beaufschlagten Abschnitte der Bleche 3 in eine Ausnehmung 5 der Matrize 2, um bei Fortsetzung des Hubes diese tief gezogenen Blechabschnitte auch radial zu zerquetschen, so dass ein Hintereinandergreifen der tiefgezogenen und zerquetschten Plattenabschnitte erfolgt, wodurch durch dieses Durchsetzfügen eine feste Verbindung zwischen den Platten 3 entsteht.In the drawing, the tool according to the invention with tool holders in an exploded view, but without the inclusion of the same in the machine tool itself, shown, between two a stamp 1 and a die 2, two sheets 3 to be joined together are arranged. To connect the sheets together, the stamp 1 is down actuated and pulls with a arranged at its end pin 4, the corresponding acted portions of the sheets 3 in a recess 5 of the die 2 to crush this deep drawn sheet metal sections also radially when continuing the stroke, so that a rear engagement of the deep-drawn and crushed plate sections takes place , whereby a firm connection between the plates 3 is created by this clinching.

Der Stempel 1 ist über einen Werkzeughalter 6 in der hier nicht dargestellten Werkzeugmaschine angeordnet und besteht aus zwei Teilen, nämlich einem Aufnahmeteil 7 und einem den Zapfen 4 aufweisenden Einsatzteil 8. Auf Grund der höheren Beanspruchung weist der Einsatzteil 8 mit Zapfen 4 eine wesentlich höhere Härte auf, als der auch auf Grund seines größeren Querschnitts geringer beanspruchte Aufnahmeteil 7, bzw. als die Werkzeughalterung 6. Aufnahmeteil 7 und Einsatzteil 8 sind über eine Pressverbindung 9 miteinander verbunden, wobei das obere Ende des Einsatzteils 8 in eine Ausnehmung 10 des Aufnahmeteils 7 formschlüssig gesteckt ist und geeignet ist, hohe Kräfte aufzunehmen. Als Verdrehsicherung zwischen Einsatzteil 8 und Aufnahmeteil 7 dient eine Abflachung 11, an dem in die Ausnehmung 10 ragende Endabschnitt des Einsatzteils 8.The punch 1 is arranged on a tool holder 6 in the machine tool, not shown here, and consists of two parts, namely a receiving part 7 and a pin 4 having insert 8. Due to the higher stress, the insert 8 with pin 4 has a much higher hardness 6, receiving part 7 and insert part 8 are connected to each other via a press connection 9, wherein the upper end of the insert part 8 in a recess 10 of the receiving part 7 form-fitting manner is plugged and is suitable to absorb high forces. As a rotation between insert 8 and receiving part 7 serves a flattening 11, on which in the recess 10 projecting end portion of the insert part. 8

Auch die Matrize 2, die ebenfalls in einer Werkzeughalterung 6 angeordnet ist, ist zweiteilig ausgebildet, bestehend aus einem die Ausnehmung 5 aufweisenden Aufnahmeteil 12 und einem in die Ausnehmung 5 gepressten Stopfen 13, der zur besseren Einführung in die Ausnehmung 5 an seiner Unterseite eine Abkantung 14 aufweist. An seiner Oberseite kann ebenfalls eine Abkantung 15 vorgesehen sein, so dass endgültig eine für die Fertigung vorteilhafte Sicke 16 entsteht. Der verbleibende Rest der Ausnehmung 5 dient in bekannter Weise als Tiefziehöffnung 17 der Matrize 2. Der Boden dieser Tiefziehöffnung 17 wird somit durch den Stopfen 13 gebildet, der ebenfalls eine wesentlich größere Materialhärte aufweist, als der Aufnahmeteil 12 dieser Matrize.Also, the die 2, which is also arranged in a tool holder 6, is formed in two parts, consisting of a recess 5 having receiving part 12 and a pressed-in recess 5 stopper 13, for better insertion into the recess 5 on its underside a fold 14 has. On its upper side, a fold 15 may also be provided, so that finally a favorable for the production bead 16 is formed. The remainder of the recess 5 is used in a known manner as a deep-drawn hole 17 of the die 2. The bottom of this deep-drawn hole 17 is thus formed by the plug 13, which is also a significant greater material hardness than the receiving part 12 of this die.

Die Werkzeughalterung 6 weist jeweils ein mit der Werkzeugmaschine verbundenes Sockelteil 18 auf, in welches Stempel 1, bzw. Matrize 2 eingesetzt werden und durch Überwurfmuttern 19, bzw. Federteller 20, sowie Federn 21 in ihrer Arbeitslage gehalten werden.The tool holder 6 has in each case one connected to the machine tool base member 18, in which punch 1, or die 2 are used and held by union nuts 19, or spring plate 20, and springs 21 in their working position.

BezugszahlenlisteLIST OF REFERENCE NUMBERS

11
Stempelstamp
22
Matrizedie
33
Blechesheets
44
Zapfenspigot
55
Ausnehmungrecess
66
WerkzeugTool
77
Aufnahmeteilreceiving part
88th
Einsatzteilinsert
99
PresssteckverbindungPress connector
1010
Ausnehmungrecess
1111
Abflachungflattening
1212
Aufnahmeteilreceiving part
1313
StopfenPlug
1414
Abkantungfold
1515
Abkantungfold
1616
SickeBeading
1717
MatrizenöfnungMatrizenöfnung
1818
Sockelteilbase part
1919
ÜberwurfmutternUnion nuts
2020
Federtellerspring plate
2121
Federfeather

Claims (6)

  1. A tool for the mechanical connection of plates (3) or the like, for their interconnection or for the connection of components to plates by rivets, by continuous joining or the like, with a stamp (1) and a die (2), each of which are supported at their ends facing away from the plates (3) in a tool holder of a machine tool, wherein a pin (4) is provided for each stamp (1) facing the plates (3), and a recess (5) is arranged in the die (2) formed of several parts, characterised in that
    - the recess in the die (2) is designed as a bag opening with inflexible lateral walls;
    - the die (2) is designed in two parts, in which an insert part (13) is arranged in a receiving part (12) as the bottom of the bag opening, which part consists of harder material than the receiving part (12), and
    - this insert part (13) is clamped in the bag opening (5) on the side facing away from the plates.
  2. The tool according to Claim 1 in particular, for the mechanical connection of plates (3) or the like, for their interconnection or for the connection of components to plates by rivets, by continuous joining or the like, with a stamp () and a die (2), each of which are supported at their ends facing away from the plates (3) in a tool holder of a machine tool, wherein a pin (4) is provided for each stamp (1) facing the plates (3), and a recess (5) is arranged in the die (2) formed of several parts, characterised by the following features:
    - the die (1) is designed in two parts, with an insert part (8) used for direct connection of the plates and having the pin (4), and
    - the insert part (8) consists of harder material than the holder (7).
  3. The tool according to Claim 1 or 3, characterised in that the lateral walls of the recess (5) of the die (2), designed as a bag opening, have a radial distance from the surface areas of the pin (4) of the stamp (1), and run in the direction of movement of the stamp (1).
  4. The tool according to any one of the preceding claims, characterised in that the positive connection between the insert part (8, 13) and the holder (7, 12) is designed as a press connection.
  5. The tool according to any one of the preceding claims, characterised in that the connection between the holder (7, 12) and the insert part (8, 13) is torsion resistant.
  6. The tool according to any one of the preceding claims for connecting components such a plates, bolts, nuts or the like, by rivets, to a plate, characterised by the use of a lost stamp that can be pressed into the plate and connected in series to the tool stamp, which lost stamp is driven in by the insert part serving as the tool stamp.
EP02732422A 2001-05-11 2002-05-13 Tool for the mechanical connection of plates Expired - Lifetime EP1385649B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10123007 2001-05-11
DE10123007 2001-05-11
PCT/DE2002/001711 WO2002092256A1 (en) 2001-05-11 2002-05-13 Tool for the mechanical connection of plates

Publications (2)

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EP1385649A1 EP1385649A1 (en) 2004-02-04
EP1385649B1 true EP1385649B1 (en) 2006-09-06

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EP02732422A Expired - Lifetime EP1385649B1 (en) 2001-05-11 2002-05-13 Tool for the mechanical connection of plates

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US (1) US7578055B2 (en)
EP (1) EP1385649B1 (en)
JP (1) JP2004520941A (en)
KR (1) KR100967454B1 (en)
CN (1) CN1505548B (en)
AT (1) ATE338593T1 (en)
AU (1) AU2002304903B2 (en)
BR (1) BR0209533B1 (en)
CA (1) CA2446424C (en)
CZ (1) CZ20033049A3 (en)
DE (3) DE10221247A1 (en)
ES (1) ES2271254T3 (en)
MX (1) MXPA03010137A (en)
PL (1) PL201638B1 (en)
RU (1) RU2306193C2 (en)
WO (1) WO2002092256A1 (en)

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DE102014011944B4 (en) 2014-08-14 2018-06-14 Eckold Gmbh & Co. Kg Two-piece die for a joining tool

Also Published As

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MXPA03010137A (en) 2005-03-07
DE50208073D1 (en) 2006-10-19
ES2271254T3 (en) 2007-04-16
JP2004520941A (en) 2004-07-15
RU2003135847A (en) 2005-05-27
CA2446424C (en) 2007-12-18
AU2002304903B2 (en) 2007-04-26
BR0209533A (en) 2004-03-09
KR20040022218A (en) 2004-03-11
RU2306193C2 (en) 2007-09-20
CN1505548B (en) 2011-12-07
US20040143948A1 (en) 2004-07-29
PL201638B1 (en) 2009-04-30
CA2446424A1 (en) 2002-11-21
BR0209533B1 (en) 2011-02-08
PL363647A1 (en) 2004-11-29
CZ20033049A3 (en) 2004-05-12
WO2002092256A1 (en) 2002-11-21
DE10221247A1 (en) 2002-12-05
DE10292020D2 (en) 2004-05-27
KR100967454B1 (en) 2010-07-01
ATE338593T1 (en) 2006-09-15
US7578055B2 (en) 2009-08-25
CN1505548A (en) 2004-06-16
EP1385649A1 (en) 2004-02-04

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