EP1385649A1 - Tool for the mechanical connection of plates - Google Patents

Tool for the mechanical connection of plates

Info

Publication number
EP1385649A1
EP1385649A1 EP02732422A EP02732422A EP1385649A1 EP 1385649 A1 EP1385649 A1 EP 1385649A1 EP 02732422 A EP02732422 A EP 02732422A EP 02732422 A EP02732422 A EP 02732422A EP 1385649 A1 EP1385649 A1 EP 1385649A1
Authority
EP
European Patent Office
Prior art keywords
tool
die
recess
receiving part
insert
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
EP02732422A
Other languages
German (de)
French (fr)
Other versions
EP1385649B1 (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
Original Assignee
Tox Pressotechnik GmbH and Co KG
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 Tox Pressotechnik GmbH and Co KG filed Critical Tox Pressotechnik GmbH and Co KG
Publication of EP1385649A1 publication Critical patent/EP1385649A1/en
Application granted granted Critical
Publication of EP1385649B1 publication Critical patent/EP1385649B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 relates to a tool for the mechanical processing of plates, for connecting them together (clinching or the like), pressing, punching or the like, with a stamp and a die according to the preamble of the main claim.
  • the punch has a pin of smaller diameter, through which plates to be connected are deep-drawn and crushed in a blind hole of a die, in order to establish a firm connection between the To achieve plates.
  • Other generic methods are also known, in which tools consisting of stamps and dies are used, which are used for pressing, stamping or the like. serve of plates, including for connecting parts to plates (DE-OS 19913695).
  • the tool according to the invention with the characterizing features of the main claim has the advantage that only the part that is actually required for processing, namely the insert part, has the desired hardness and, due to its design, experiences less or no breaking stress, while the other part, namely the receiving part, according to its purpose, can consist of softer and more elastic material.
  • the manufacturing effort for the tool in particular in consideration of the risk described above, is cheaper than in the comparable prior art.
  • cross-sections of the punch and / or die which particularly transmit the workforce, are larger than the cross-sections which are exposed to the actual plate processing, so that in the invention advantageously larger cross-sections are used for power transmission more elastic material is available and smaller cross-sections are used for the actual panel processing, with the appropriate tool hardness.
  • the invention can be used either on the stamp side or on the die side, or on both sides.
  • the punch and / or die are designed to be divided transversely to the drive direction (to the working direction), in order thereby to achieve a sufficient form fit or thus a given force fit. It is not a problem here to make the surfaces of the insert part and the receiving part opposite one another in the working direction so large that there is no excessive stress, particularly on the surface of the receiving part.
  • a recess for the form-fitting connection with the insert part is provided in the end face of the receiving part facing the insert part.
  • this recess is a bore or the like, into which the corresponding insert part can be inserted or inserted with the end facing it.
  • the edges of the insert can be chamfered or rounded in order to make insertion easier.
  • the positive connection between the insert part and the receiving part is designed as a press connection, that is to say that one There is radial pressure between the inner wall of the recess and the outer surface of the insert.
  • the insert part is plug-shaped and forms its bottom after it is inserted into the recess.
  • This embodiment of the invention relates above all to the die, in which case the insert does not protrude from the recess, since it is only intended to form the base because of the extraordinarily high stress there.
  • connection between the receiving part and insert part is designed to be twist-locked.
  • This rotational locking can be achieved by simply flattening the circular cross section on which the receptacle is based.
  • the side walls of the recess have a radial distance from the lateral surfaces of the stamp, the recess being designed in the radial and axial direction as a pocket opening, the side walls of which extend in the direction of movement of the stamp and, like the bottom of the recess, are adamant.
  • stamp and die is known per se (EP 0215449), but with the disadvantages of the prior art mentioned at the outset.
  • the tool is used to connect components, namely bolts, nuts or the like, to a plate, the tool stamp being preceded by a lost stamp which remains on the plate after processing (DE-OS 19913695).
  • Figure 1 shows a partial longitudinal section through stamp, die and
  • Figure 2 shows a cross section along the line II-II in Figure 1.
  • the tool according to the invention with tool holders is shown in an exploded view, but without the holder of the same in the machine tool itself, two sheets 3 to be connected to one another being arranged between a punch 1 and a die 2.
  • the stamp 1 is down actuates and pulls with a pin 4 arranged at its end the correspondingly loaded sections of the sheets 3 into a recess 5 of the die 2, in order to crush these deep-drawn sheet sections radially as the stroke continues, so that the deep-drawn and crushed plate sections engage behind one another , which creates a firm connection between the plates 3 by this enforcement.
  • the stamp 1 is arranged via a tool holder 6 in the machine tool, not shown here, and consists of two parts, namely a receiving part 7 and an insert part 8 having the pin 4. Due to the higher stress, the insert part 8 with pin 4 has a significantly higher hardness on, as the receiving part 7, which is also less stressed due to its larger cross section, or as the tool holder 6.
  • the receiving part 7 and the insert part 8 are connected to one another via a press connection 9, the upper end of the insert part 8 being in a recess 10 in the receiving part 7 is positively inserted and is suitable for absorbing high forces.
  • a flattening 11, on the end section of the insert part 8 which projects into the recess 10, serves as a rotation lock between the insert part 8 and the receiving part 7.
  • the die 2 which is also arranged in a tool holder 6, is formed in two parts, consisting of a receiving part 12 having the recess 5 and a plug 13 pressed into the recess 5, which has a bend on its underside for better insertion into the recess 5 14 has.
  • a bevel 15 can also be provided on its upper side, so that a bead 16 which is advantageous for production is finally created.
  • the remaining rest of the recess 5 serves in a known manner as a deep-drawing opening 17 of the die 2.
  • the bottom of this deep-drawing opening 17 is thus formed by the plug 13, which is also an essential one has greater material hardness than the receiving part 12 of this die.
  • the tool holder 6 in each case has a base part 18 connected to the machine tool, into which stamp 1 or die 2 are inserted and are held in their working position by union nuts 19 or spring plates 20 and springs 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (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)
  • Mechanical Coupling Of Light Guides (AREA)
  • Joining Of Building Structures In Genera (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

WERKZEUG ZUM MECHANISCHEN VERBINDEN VON PLATTEN TOOL FOR MECHANICALLY CONNECTING PANELS
Stand der TechnikState of the art
Die Erfindung geht aus von einem Werkzeug zum mechanischen Bearbeiten von Platten, zu deren Miteinanderverbinden (Durchsetzfügen odgl. ), Pressen, Stanzen odgl., mit einem Stempel und einer Matrize nach der Gattung des Hauptanspruchs.The invention relates to a tool for the mechanical processing of plates, for connecting them together (clinching or the like), pressing, punching or the like, with a stamp and a die according to the preamble of the main claim.
Bei einem üblichen, dem Durchsetzfügen dienenden Werkzeug der gattungsgemäßen Art (DE-PS 3710929), weist der Stempel einen Zapfen kleineren Durchmessers auf, durch den miteinander zu verbindende Platten in eine Sackbohrung einer Matrize tiefgezogen und zerquetscht werden, um so eine feste Verbindung zwischen den Platten zu erzielen. Es sind auch andere gattungsgemäße 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). Es ist auch bekannt, bei einer Fügeverbindung stempelseitig und/ oder matrizenseitig 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 Voraussetzungen bestehen, die dann eine solche Verbindung ermöglichen. Derartige mehrteilige Werkzeuge sind natürlich aufwendig und werden nur bei entsprechendem Zweck bzw. entsprechender Notwendigkeit eingesetzt.In the case of a common tool of the generic type used for clinching (DE-PS 3710929), the punch has a pin of smaller diameter, through which plates to be connected are deep-drawn and crushed in a blind hole of a die, in order to establish a firm connection between the To achieve plates. Other generic methods are also known, in which tools consisting of stamps and dies are used, which are used for pressing, stamping or the like. serve of plates, including for connecting parts to plates (DE-OS 19913695). It is also known to cool the tools, that is to say the punch and the die, in the case of a joining connection on the punch side and / or the die side, in order thereby to be able to connect plates which at least partially consist of polymers or contain polymers (DE-OS 19752201). As a result, when processing panels made of viscose-elastic materials, such as polymers, rubber, etc., with other materials, such as metal, it is achieved that similar physical requirements exist, which then enable such a connection. Such multi-part tools are, of course, complex and are only used if they have the appropriate purpose or need.
Bei einem anderen bekannten Verfahren der gattungsgemäßen Art (DE-OS 10006789), wird besonders auf die Aufnahme des Werkzeuges, 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 another known method of the generic type (DE-OS 10006789), particular attention is paid to the inclusion of the tool, that is to say the punch or the die, in the tool holder of the machine tool, with the aim of inexpensive replacement of these tools, for which purpose a corresponding radial Slidability is provided.
Grundsätzlich, aber auch in all diesen Fällen, werden die unmittelbar vom Bearbeitsvorgang betroffenenIn principle, but also in all these cases, those affected directly by the machining process
Werkzeugabschnitte besonders beansprucht. 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 eine entsprechende Härte im beanspruchten Bereich aufweisen müssen. 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. Angestrebt ist somit stets ein Werkzeug mit optimaler Lebensdauer, bei äußerst günstiger Härte und nur geringer Bruchneigung.Tool sections particularly stressed. The service life of the tools used corresponds to the use and requirements of the tool material and is unsatisfactorily short in many cases. In order to achieve the applicable standard, the effort for the production of the tools is very high, since they have to have a corresponding hardness in the stressed area. On the other hand, such hardness can lead to the tool breaking, especially if a considerable longitudinal extension, which is often required, is transverse to the tool Working direction of the same is given. Because of the holder, a minimum longitudinal extension in the working direction is also required, that is to say that due to these conditions, the punch and die, with such a hardness required for a long service life, have a certain tendency to break, such a breakage can have devastating consequences. Particularly when the tool is used in series production for joining sheet metal in motor vehicles, such defects have devastating consequences. The aim is therefore always to have a tool with an optimal service life, extremely hardness and little tendency to break.
Die Erfindung und Ihre VorteileThe invention and its advantages
Das erfmdungsgemäße Werkzeug mit den kennzeichnenden Merkmalen des Hauptanspruchs hat dem gegenüber 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 elastischeren Material bestehen kann. Trotz der Zweiteilung von jeweils Stempel und/ oder jeweils Matrize ist der Herstellungsaufwand des 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 Stempel und/ oder Matrize größer sind, als die Querschnitte, die der eigentlichen Plattenbearbeitung ausgesetzt sind, so dass bei der Erfindung vorteilhafterweise zur Kraftübertragung größere Querschnitte aus elastischerem Material vorhanden sind und zur eigentlichen Plattenbearbeitung kleinere Querschnitte dienen, mit entsprechender Werkzeughärte.The tool according to the invention with the characterizing features of the main claim has the advantage that only the part that is actually required for processing, namely the insert part, has the desired hardness and, due to its design, experiences less or no breaking stress, while the other part, namely the receiving part, according to its purpose, can consist of softer and more elastic material. Despite the division of the punch and / or die into two, the manufacturing effort for the tool, in particular in consideration of the risk described above, is cheaper than in the comparable prior art. In addition, the cross-sections of the punch and / or die, which particularly transmit the workforce, are larger than the cross-sections which are exposed to the actual plate processing, so that in the invention advantageously larger cross-sections are used for power transmission more elastic material is available and smaller cross-sections are used for the actual panel processing, with the appropriate tool hardness.
Je nach Art des Werkzeugs kann die Erfindung entweder auf der Stempelseite oder auf der Matrizenseite, oder auf beiden Seiten, Anwendung finden.Depending on the type of tool, the invention can be used either on the stamp side or on the die side, or on both sides.
Nach einer vorteilhaften Ausgestaltung 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 Aufnahme teils, entsteht.According to an advantageous embodiment of the invention, the punch and / or die are designed to be divided transversely to the drive direction (to the working direction), in order thereby to achieve a sufficient form fit or thus a given force fit. It is not a problem here to make the surfaces of the insert part and the receiving part opposite one another in the working direction so large that there is no excessive stress, particularly on the surface of the receiving part.
Nach einer zusätzlichen vorteilhaften Ausgestaltung der Erfindung ist in der dem Einsatzteil zugewandten Stirnseite des Aufnahmeteils eine Ausnehmung zur formschlüssigen Verbindung mit dem Einsatzteil vorhanden. Üblicher Weise handelt es sich bei dieser Ausnehmung um eine Bohrung odgl., 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.According to an additional advantageous embodiment of the invention, a recess for the form-fitting connection with the insert part is provided in the end face of the receiving part facing the insert part. Usually, this recess is a bore or the like, into which the corresponding insert part can be inserted or inserted with the end facing it. The edges of the insert can be chamfered or rounded in order to make insertion easier.
Nach einer diesbezüglichen 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 in this regard, the positive connection between the insert part and the receiving part is designed as a press connection, that is to say that one There is radial pressure between the inner wall of the recess and the outer surface of the insert.
Nach einer zusätzlichen vorteilhaften Ausgestaltung der Erfindung ist der Einsatzteil stopfenartig ausgebildet und bildet nach seinem Einsetzen in die Ausnehmung deren Boden. Diese Ausgestaltung der Erfindung betrifft vor allem die Matrize, bei der dann der Einsatzteil nicht aus der Ausnehmung herausragt, da der lediglich den Boden wegen der dort gegebenen außerordentlich hohen Beanspruchung bilden soll.According to an additional advantageous embodiment of the invention, the insert part is plug-shaped and forms its bottom after it is inserted into the recess. This embodiment of the invention relates above all to the die, in which case the insert does not protrude from the recess, since it is only intended to form the base because of the extraordinarily high stress there.
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 the receiving part and insert part is designed to be twist-locked. This rotational locking can be achieved by simply flattening the circular cross section on which the receptacle is based.
Nach einer speziellen, vorteilhaften Ausgestaltung der Erfindung weisen die Seitenwände der Ausnehmung einen radialen Abstand zu den Mantelflächen des Stempels auf, wobei die Ausnehmung in radialer und axialer Richtung als Sacköffnung ausgebildet ist, deren Seitenwände in Bewegungsrichtung des Stempels verlaufen und wie der Boden der Ausnehmung, unnachgiebig ausgebildet sind. 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 Zerquetschen der Plattenanteile die in Arbeitsrichtung gehende Belastung außerordentlich hoch ist, hingegen die radialen Widerstandskräfte wesentlich geringer sein können. Nach einer anderen speziellen Ausgestaltung der Erfindung dient das Werkzeug zum Verbinden von Bauteilen, nämlich Bolzen, Muttern odgl., mit einer Platte, wobei dem Werkzeugstempel ein verlorener Stempel vorgeschaltet ist, der nach der Bearbeitung an der Platte verbleibt (DE-OS 19913695).According to a special, advantageous embodiment of the invention, the side walls of the recess have a radial distance from the lateral surfaces of the stamp, the recess being designed in the radial and axial direction as a pocket opening, the side walls of which extend in the direction of movement of the stamp and, like the bottom of the recess, are adamant. Such a design and assignment of stamp and die is known per se (EP 0215449), but with the disadvantages of the prior art mentioned at the outset. Through the use of the invention, considerable progress is achieved here, since, as is known, during deep-drawing and subsequent crushing of the plate parts, the load going in the working direction is extremely high, whereas the radial resistance forces can be significantly lower. According to another special embodiment of the invention, the tool is used to connect components, namely bolts, nuts or the like, to a plate, the tool stamp being preceded by a lost stamp which remains on 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 can be found in the following description, the drawing and the claims.
Zeichnungdrawing
Ein Ausführungsbeispiel des Gegenstandes der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigen:An embodiment of the object of the invention is shown in the drawing and is described in more detail below. Show it:
Figur 1 einen Teillängsschnitt durch Stempel, Matrize undFigure 1 shows a partial longitudinal section through stamp, die and
Werkzeughalter in Explosionsdarstellung, zum Teil entsprechend der Linie I-I in Figur 2 undTool holder in an exploded view, partly along the line I-I in Figure 2 and
Figur 2 einen Querschnitt entsprechend der Linie II-II in Figur 1 .Figure 2 shows a cross section along the line II-II in Figure 1.
Beschreibung des AusführungsbeispielsDescription of the embodiment
In der Zeichnung ist das erfϊndungsgemäße 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 is shown in an exploded view, but without the holder of the same in the machine tool itself, two sheets 3 to be connected to one another being arranged between a punch 1 and a die 2. To connect the sheets together, the stamp 1 is down actuates and pulls with a pin 4 arranged at its end the correspondingly loaded sections of the sheets 3 into a recess 5 of the die 2, in order to crush these deep-drawn sheet sections radially as the stroke continues, so that the deep-drawn and crushed plate sections engage behind one another , which creates a firm connection between the plates 3 by this enforcement.
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. Aufnahme teil 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 stamp 1 is arranged via a tool holder 6 in the machine tool, not shown here, and consists of two parts, namely a receiving part 7 and an insert part 8 having the pin 4. Due to the higher stress, the insert part 8 with pin 4 has a significantly higher hardness on, as the receiving part 7, which is also less stressed due to its larger cross section, or as the tool holder 6. The receiving part 7 and the insert part 8 are connected to one another via a press connection 9, the upper end of the insert part 8 being in a recess 10 in the receiving part 7 is positively inserted and is suitable for absorbing high forces. A flattening 11, on the end section of the insert part 8 which projects into the recess 10, serves as a rotation lock between the insert part 8 and the receiving part 7.
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.The die 2, which is also arranged in a tool holder 6, is formed in two parts, consisting of a receiving part 12 having the recess 5 and a plug 13 pressed into the recess 5, which has a bend on its underside for better insertion into the recess 5 14 has. A bevel 15 can also be provided on its upper side, so that a bead 16 which is advantageous for production is finally created. The remaining rest of the recess 5 serves in a known manner as a deep-drawing opening 17 of the die 2. The bottom of this deep-drawing opening 17 is thus formed by the plug 13, which is also an essential one has 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 in each case has a base part 18 connected to the machine tool, into which stamp 1 or die 2 are inserted and are held in their working position by union nuts 19 or spring plates 20 and springs 21.
Alle in der Beschreibung, den nachfolgenden Ansprüchen und der Zeichnung dargestellten Merkmale können sowohl einzeln als auch in beliebiger Kombination miteinander erfindungswesentlich sein. All the features shown in the description, the following claims and the drawing can be essential to the invention both individually and in any combination with one another.
BezugszahlenlisteLIST OF REFERENCE NUMBERS
1 Stempel1 stamp
2 Matrize2 die
3 Bleche3 sheets
4 Zapfen4 pins
5 Ausnehmung5 recess
6 Werkzeug6 tools
7 Aufnahmeteil7 receiving part
8 Einsatzteil8 insert
9 Pres s Steckverbindung9 Pres s connector
10 Ausnehmung10 recess
11 Abflachung11 flattening
12 Aufnahmeteil12 receiving part
13 Stopfen13 plugs
14 Abkantung Abkantung14 folding fold
SickeBeading
MatrizenöfnungMatrizenöfnung
Sockelteilbase part
ÜberwurfmutternUnion nuts
Federtellerspring plate
Feder feather

Claims

Ansprüche Expectations
1. Werkzeug zur mechanischen Bearbeitung von Platten (3) odgl., zu deren Miteinanderverbinden (Durchsetzfügen odgl.), Pressen, Stanzen odgl., mit einem Stempel (1) und einer Matrize (2), welche jeweils an ihren den Platten (3) abgewandten Enden in einer Werkzeugaufnahme einer Werkzeugmaschine gehaltert sind, dadurch gekennzeichnet,1. Tool for mechanical processing of plates (3) or the like, for connecting them together (clinching or the like), pressing, punching or the like, with a punch (1) and a die (2), each of which is attached to the plates (3 ) opposite ends are held in a tool holder of a machine tool, characterized in that
- dass Stempel (1) und / oder Matrize (2) jeweils zusammengesetzt sind, aus einem zur unmittelbaren Bearbeitung der Platten (3) dienenden Einsatzteil (8, 13) und einem der Halterung dienenden Aufnahme teil (7, 12),- That stamp (1) and / or die (2) are each composed of an insert part (8, 13) serving for the direct processing of the plates (3) and a receiving part (7, 12) serving for the holder,
- dass zwischen Einsatzteil (8, 13) und Aufnahmeteil (7, 12) eine formschlüssige Verbindung besteht und- That between the insert part (8, 13) and the receiving part (7, 12) there is a positive connection and
- dass der Einsatzteil (8, 13) aus einem härteren Material besteht, als der Aufnahmeteil (7, 12).- That the insert part (8, 13) consists of a harder material than the receiving part (7, 12).
2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass Stempel (1) und / oder Matrize (2) quer zur Antriebsrichtung (zur Arbeitsrichtung) geteilt sind.2. Tool according to claim 1, characterized in that the punch (1) and / or die (2) are divided transversely to the drive direction (to the working direction).
3. Werkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in der dem Einsatzteil (8, 13) zugewandten Stirnseite des Aufnahmeteils (7, 12) eine Ausnehmung (5, 10) zur formschlüssigen Verbindung mit dem Einsatzteil (8, 13) vorhanden ist.3. Tool according to claim 1 or 2, characterized in that in the insert (8, 13) facing end of the receiving part (7, 12) there is a recess (5, 10) for positive connection with the insert part (8, 13).
4. Werkzeug nach Anspruch 3, dadurch gekennzeichnet, daß die formschlüssig Verbindung zwischen Einsatzteil (8, 13) und Aufnahmeteil (7, 12) als Pressverbindung ausgebildet ist.4. Tool according to claim 3, characterized in that the positive connection between the insert part (8, 13) and the receiving part (7, 12) is designed as a press connection.
5. Werkzeug nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass der Einsatzteil (13) stopfenartig ausgebildet ist und nach seinem Einsatz in die Ausnehmung (5) deren Boden bildet.5. Tool according to claim 3 or 4, characterized in that the insert part (13) is plug-shaped and forms its bottom after its use in the recess (5).
6. Werkzeug, nach einem der vorherigen Ansprüche dadurch gekennzeichnet, dass die Verbindung zwischen Aufnahmeteil (7) und Einsatzteil (8) verdrehschlüssig ist.6. Tool, according to one of the preceding claims, characterized in that the connection between the receiving part (7) and insert (8) is non-rotatably.
7. Werkzeug, nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet,7. Tool according to one of claims 3 to 6, characterized in that
- dass die Seitenwände der Ausnehmung (5) einen radialen Abstand zu den Mantelflächen des Formstempels (4) aufweisen und- That the side walls of the recess (5) have a radial distance from the outer surfaces of the die (4) and
- dass die Ausnehmung (5) in der Matrize (2) in radialer und axialer Richtung als Sacköffnung ausgebildet ist, deren Seitenwände in Bewegungsrichtung des Stempels (1) verlaufen und wie der Boden der Ausnehmung (5), unnachgiebig ausgebildet sind.- That the recess (5) in the die (2) is designed in the radial and axial direction as a pocket opening, the side walls of which extend in the direction of movement of the stamp (1) and, like the bottom of the recess (5), are designed to be rigid.
8. Werkzeug, nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es zum nietartigen Verbinden von Bauteilen wie Platten, Bolzen, Muttern odgl. mit einer Platte dient, unter Verwendung eines in die Platte pressbaren verlorenen Stempels, welcher durch den Werkzeugstempel angetrieben wird. 8. Tool according to one of the preceding claims, characterized in that it or the like for rivet-like connection of components such as plates, bolts, nuts. serves with a plate, using a lost stamp which can be pressed into the plate and which is driven by 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

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

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KR (1) KR100967454B1 (en)
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CA (1) CA2446424C (en)
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KR100967454B1 (en) 2010-07-01
PL363647A1 (en) 2004-11-29
DE10292020D2 (en) 2004-05-27
CZ20033049A3 (en) 2004-05-12
JP2004520941A (en) 2004-07-15
ES2271254T3 (en) 2007-04-16
CN1505548A (en) 2004-06-16
RU2306193C2 (en) 2007-09-20
ATE338593T1 (en) 2006-09-15
MXPA03010137A (en) 2005-03-07
AU2002304903B2 (en) 2007-04-26
EP1385649B1 (en) 2006-09-06
US7578055B2 (en) 2009-08-25
CA2446424C (en) 2007-12-18
KR20040022218A (en) 2004-03-11
WO2002092256A1 (en) 2002-11-21
US20040143948A1 (en) 2004-07-29
DE10221247A1 (en) 2002-12-05
DE50208073D1 (en) 2006-10-19
BR0209533B1 (en) 2011-02-08
BR0209533A (en) 2004-03-09
CA2446424A1 (en) 2002-11-21
RU2003135847A (en) 2005-05-27
PL201638B1 (en) 2009-04-30
CN1505548B (en) 2011-12-07

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