EP0948418B1 - Mechanical assembly process and device - Google Patents

Mechanical assembly process and device Download PDF

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Publication number
EP0948418B1
EP0948418B1 EP98954413A EP98954413A EP0948418B1 EP 0948418 B1 EP0948418 B1 EP 0948418B1 EP 98954413 A EP98954413 A EP 98954413A EP 98954413 A EP98954413 A EP 98954413A EP 0948418 B1 EP0948418 B1 EP 0948418B1
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EP
European Patent Office
Prior art keywords
punch
joining
die
impact
sheet
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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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EP98954413A
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German (de)
French (fr)
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EP0948418A1 (en
Inventor
Markus Engler
Dominik Schneider
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Eckold AG
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Eckold AG
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    • 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
    • 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
    • Y10T29/53996—Means to assemble or disassemble by deforming

Definitions

  • the invention relates to a method and a device for mechanical 15. Joining sheet metal parts according to the preamble of claims 1 and 15 respectively (e.g. EP-A-0 077 932).
  • each made The stamp and die are made up of small three-dimensional structures that Joining elements. These joining elements are formed by in a Joining area of the sheet metal material of the sheet metal parts lying flat on one another the sheet metal plane is moved out and compressed together.
  • non-releasable joining elements are created by mechanical Put. For this purpose, either a volume area can be created from the sheet metal parts pushed out or pushed through and then formed by upsetting, so that its width increases. In this respect, one speaks of clinching. to Ancillary joining parts can be in shape to increase the load-bearing capacity of such a joining element of punch rivets can be incorporated into the joining element during joining.
  • the Single sheet thicknesses are usually in the range between 0, 5 and 3 mm.
  • the forming energies to be applied for these mechanical joining processes are applied by one press stroke each, which the necessary Provides pressing forces as joining forces.
  • pressing forces are usually in the range between 20 and 100 kN.
  • a joining tool that can be used for this purpose is, for example, from EP-A-77932 known.
  • There a joining area is delimited by a press driven stamp and a stationary die. Will the stamp be in Moved in the direction of the die, the material of the sheets is placed in a cavity Deep drawn die. If the sheet on the die side reaches the bottom of the Cavity, which is formed by an anvil, and the pressure on the Stamps maintained or raised, the bottom of the enforced Spread out the joining section laterally, as the material is compressed and the Dodge the die cavity from the side walls.
  • An advantage such joining tools is that both with a single press stroke the penetration as well as the upsetting of the sheet material can take place.
  • the die In the case of individual joining devices, the die is usually placed in a stationary position in one Leg of a C-shaped bracket of a pair of pliers or an analog Device, the other leg of a guide for a stamp having.
  • a hydraulic working cylinder or is then used for a stamp drive also used a pneumatic cylinder or an eccentric press, the ram attacks on the punch while the reaction forces in a the C-bracket can be derived.
  • For the stroke is either a force or a Path limitation provided.
  • the required pressures of the hydraulic medium are in the order of a few tens of bar and up to 500 bar.
  • Related Hose inlets and outlets are accordingly inflexible, massive and heavy.
  • the object of the invention is therefore to provide a method for mechanical joining to create the preamble of claim 1, the use easier and under Consideration of the costs of the drive units of inexpensive devices allows.
  • an impinging accelerated mass transmits several impulses, which Blows lead to impact stress.
  • the one in each step supplied energy must be sufficient to pass the material through the elastic range of the deformation characteristic down to the plastic range to transform into it. It is preferred not to go far beyond this minimum energy go out to take full advantage of the method of the invention to be able to.
  • the total of the individual strikes of a mechanical joining results then the desired joining element, which is thus created in partial steps.
  • the minimum single-step energy is surprisingly low and enables small, light and inexpensive joining devices also for joining steel sheets of twice 0.5 mm and above. Because the respective reaction forces Relatively light C-arms can also be included in every single step or analog mounts can be used.
  • An example of a free-flying piston is its two sides alternately and in rapid succession of compressed air.
  • a device according to the invention for striking joining with single strikes is specified in claim 15.
  • the joining tool set also includes one Stamp 16.
  • the die 14 and the stamp 16 have a construction as they is disclosed for example in said EP-A-77932.
  • the stamp 16 is on attached to a guide piston 18 which in a bore 20 of a shoulder 22nd of the C-bracket 12 is guided straight and secured against rotation.
  • the Piston 18 has a collar 24 and a spring 26 is between the collar 24 and a shoulder 28 which clamps the guide piston 18 in the direction Die 14 presses.
  • the Stamp 16 with its working surface against the workpieces to be joined held or biased to lift the punch 16 from the sheet metal parts 30 to prevent in an initial phase of the joining process.
  • Sheets 30 to be added lie on a support element shown broken away 32 on and are broken away by a preferably deliverable, also shown clamp holder 34 secured in the joining position. With those to be joined Sheets 30 are at least two sheets lying one on top of the other 30, whereby it is quite common that more than two sheets 30 through punctiform joining elements are connected.
  • a Path limitation e.g. a pneumatic pressure cut-off, executed to to interrupt or end a stroke sequence as follows is explained.
  • the necessary and sufficient joining path "X" is the distance between the collar 24 and a stop flange 36. In other embodiments the joining path can also be adjustable.
  • the extension 22 has a straight guide bore in the extension of its bore 20 38 for an impact mass 40.
  • the impact mass 40 is in Arrow direction for a reciprocating movement relative to the guide piston 18 driven.
  • the impact mass 40 is here from a free-flying piston formed, the two sides alternately and with rapid succession with compressed air are acted upon. Compressed air inlets and outlets are not shown because they are in are known to be attachable.
  • the impact mass 40 works against the guide piston 18, which transmits the blow to the stamp 16.
  • the Stamp 16 thereby becomes a striking tool that has a straining load introduces into the sheets 30.
  • a series of single strikes will generated by the alternating application of the impact mass 40 to the Join path "X" by impact stress.
  • the impact energy of the Single strikes leads to the stamp 16 in a single addition each Executes partial joining sections, each individual punch the stamp 16 from a The previously taken part-joining position is moved further towards the die 14 until the Addition is completed.
  • the number of blows is preferably 10 to 50 blows, in particular 10 to 25 Beats per second.
  • the number of blows depends in particular on the Material type of the sheets, i.e. Aluminum, steel, high-strength steel etc, and the Sheet thickness.
  • Path limitation may be provided.
  • the impact stress on the sheets 30 caused by the impact mass 40 in the form of strikes occurring in series are strikes with a short stroke duration, the preferably be generated in rapid succession.
  • the stroke duration of a stroke is preferably selected in the range between 0.02 and 5 ms, in particular 0.1 up to 0.9 ms.
  • the brevity of the stroke should be such that the inertia one of the moving impact masses 40, here the lower one Leg 10, is essentially not overcome.
  • a usual joining time can then be less than a second with a beat sequence of, for example, 4 up to 10 single blows when mechanically joining aluminum sheets 30 with sheet thicknesses of 1 mm each.
  • the Opening width of the bracket is adjustable, for example around the bracket via a bend lead behind which the joining is to be made.
  • the clamp holder can also act as a stripper of the joined sheets 30 from Stamp 16 serve.
  • the usual spring-loaded wipers on the die side are less suitable here because they transmit the momentum from the impact mass 40 would brake on the guide piston. You could use lever-like ones, if necessary use manually operated scrapers, but for simplification the representation are not drawn.
  • the stamp 16 together with his Guide piston 18 are pressed upwards against the force of the spring 26.
  • the up and down swinging impact mass 40 with the air column or one A pneumatic system's striking spring can be a vibrating system represent that outside its resonance frequency, preferably far below its resonance frequency is operated. Then the assembly remains consisting of approach 22 and C-bracket, largely at a standstill, so that Device can be easily guided by hand.
  • the joining is carried out by means of one Hubes of the stamp 16 produced, which he in several discrete steps passes.
  • the holder of the punch and die should be pliers-shaped. It can also be one Force redirection over an inclined plane can be provided. Are also more Systems with several or many sets of joining tools imaginable, at those behind the matrices a single large common countermass is provided.
  • a device for the mechanical joining of sheet metal parts accordingly comprises a tool set comprising at least one stamp 16 and a die 14 having an anvil as tool set elements, between which the sheets 30 to be connected lie flat one above the other, wherein at least one tool set element 16 or 14 for loading the Sheet metal parts 30 is movable with a forming energy, and the movable Tool element designed as a striking tool with a moving mass 40 with which an impact stress in the form of serial blows is shorter Impact duration can be introduced into the sheet metal parts 30.
  • Fig. 2 shows a second embodiment of a joining device, which differs from the to Fig. 1 only differs in that the positions of Die 14 and punch 16 were replaced.
  • the impact mass 40 acts here So on the die 14, while the punch 16 is clamped stationary. in the the rest of the above explanations for Fig. 1 apply accordingly.
  • the impact mass 40 either electromechanically or pneumatically or via one in an axis direction arrangement performing periodic up and down movement is accelerated.
  • the ignition of an explosive can also be used.
  • the different Drive means all enable percussion joining according to the invention.
  • the joining device according to the invention can have a long projection be formed.
  • the lower leg 10 1 can be designed as a long-armed, one-armed lever that extends from the C-bracket 12. The same applies of course to the thigh that the assigned stamp 16 carries.
  • a method according to the invention for the mechanical joining of Sheet metal parts in which by means of a tool set from at least one Stamp and a die material having an anvil under Effect of a forming energy shifted out of a sheet metal plane together and is compressed, it is accordingly provided that the forming energy or Forming work due to impact stress in the form of serially occurring Short strokes duration is generated.
  • the reaction forces can range from one on the side of the tool set facing away from the impacting mass arranged counterweight can be included.
  • the size of the pulses can be dimensioned such that the forming energy supplied per pulse is one causes relatively little plastic deformation of the materials to be joined.
  • the stroke sequence of the individual strokes, the stroke number as well as their stroke duration can be selected as above for the joining devices in connection with Fig. 1 and 2 has been described. Furthermore, one can by the impact stress per stroke received by the sheets 30 preferably in Range from 7 to 20 joules.
  • auxiliary joining part can be incorporated into the joining become.
  • Auxiliary joining parts are punch rivets, especially those with semi-tubular rivets, that remain in the joining zone.

Abstract

A mechanical assembly process and device for sheet metal parts (30) are disclosed. The material of the metal sheets is displaced and upset out of a sheet metal plane by a forming energy applied by means of a tool set comprising at least one male die (6) and a female mould (4) fitted with an anvil. The forming energy is generated by impact in the form of short, successive strikes.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum mechanischen Fügen von Blechteilen nach dem Oberbegriff des Anspruchs 1 bzw. 15 (stehe z.B. EP-A-0 077 932).The invention relates to a method and a device for mechanical 15. Joining sheet metal parts according to the preamble of claims 1 and 15 respectively (e.g. EP-A-0 077 932).

Beim mechanischen Fügen mittels Umformen werden an Verbindungsstellen zu verbindende Blechteile unter der Wirkung von Werkzeugsätzen, die jeweils aus Stempel und Matrize bestehen, kleine räumliche Gebilde geformt, die Fügeelemente. Diese Fügeelemente werden gebildet, indem in einem Fügebereich der Blechwerkstoff der flächig aufeinanderüegenden Blechteile aus der Blechebene gemeinsam heraus verschoben und gestaucht wird. Damit entstehen in konstruktiver Sicht nicht lösbare Fügeelemente durch mechanisches Fügen. Aus den Blechteilen kann hierzu entweder ein Volumenbereich herausgedrückt oder durchgesetzt und dann durch Stauchen umgeformt werden, so daß seine Breite zunimmt. Man spricht insoweit auch vom Clinchen. Zur Erhöhung der Tragkraft eines solchen Fügeelements können Hilfsfügeteile in Form von Stanznieten in das Fügeelement beim Fügen eingearbeitet werden. Die Einzelblechdicken liegen üblicherweise im Bereich zwischen 0, 5 und 3 mm.Mechanical joining by means of forming at connecting sheet metal parts under the effect of tool sets, each made The stamp and die are made up of small three-dimensional structures that Joining elements. These joining elements are formed by in a Joining area of the sheet metal material of the sheet metal parts lying flat on one another the sheet metal plane is moved out and compressed together. In order to From a constructional point of view, non-releasable joining elements are created by mechanical Put. For this purpose, either a volume area can be created from the sheet metal parts pushed out or pushed through and then formed by upsetting, so that its width increases. In this respect, one speaks of clinching. to Ancillary joining parts can be in shape to increase the load-bearing capacity of such a joining element of punch rivets can be incorporated into the joining element during joining. The Single sheet thicknesses are usually in the range between 0, 5 and 3 mm.

Die für diese mechanischen Fügevorgänge aufzubringenden Umformenergien werden durch jeweils einen Pressenhub aufgebracht, der die notwendigen Preßkräfte als Fügekräfte zur Verfügung stellt. Je nach Werkstoffart und Dicke der zu verbindenden Blechteile liegen die Preßkräfte üblicherweise im Bereich zwischen 20 und 100 kN.The forming energies to be applied for these mechanical joining processes are applied by one press stroke each, which the necessary Provides pressing forces as joining forces. Depending on the type of material and thickness of the the pressing forces are usually in the range between 20 and 100 kN.

Ein hierzu einsetzbares Fügewerkzeug ist beispielsweise aus EP-A-77932 bekannt. Dort wird ein Fügebereich begrenzt von einem von einer Presse angetriebenen Stempel und einer stationären Matrize. Wird der Stempel in Richtung Matrize bewegt, wird das Material der Bleche in einen Hohlraum der Matrize tiefgezogen. Erreicht das matrizenseitige Blech den Boden des Hohlraums, der von einem Amboß gebildet wird, und wird der Druck auf den Stempel aufrechterhalten oder erhöht, kann sich der Boden des durchgesetzten Fügeabschnitts seitlich ausbreiten, da das Material gestaucht wird und die den Matrizenhohlraum seitlich begrenzenden Wandungen ausweichen. Ein Vorteil solcher Fügewerkzeuge besteht darin, daß mit einem einzigen Pressenhub sowohl das Durchsetzen als auch das Stauchen des Blechmaterials erfolgen kann. Dafür muß aber sichergestellt sein, daß die die Seitenwände des Matrizenhohlraumes definierenden Elemente einerseits eine hohe Festigkeit aufweisen, um als Widerlager beim Durchsetzen zu dienen, andererseits aber hinreichend flexibel sein, um beim Stauchen ausweichen zu können. Verteilt man beide Funktionen auf getrennte Elemente, wird die Matrizengestaltung aufwendiger.A joining tool that can be used for this purpose is, for example, from EP-A-77932 known. There a joining area is delimited by a press driven stamp and a stationary die. Will the stamp be in Moved in the direction of the die, the material of the sheets is placed in a cavity Deep drawn die. If the sheet on the die side reaches the bottom of the Cavity, which is formed by an anvil, and the pressure on the Stamps maintained or raised, the bottom of the enforced Spread out the joining section laterally, as the material is compressed and the Dodge the die cavity from the side walls. An advantage such joining tools is that both with a single press stroke the penetration as well as the upsetting of the sheet material can take place. Therefore But it must be ensured that the side walls of the die cavity defining elements on the one hand have a high strength to as Serve abutments when pushing through, but on the other hand sufficiently flexible to be able to dodge when upsetting. If you distribute both functions on separate elements, the matrix design becomes more complex.

Wie bereits ausgeführt, müssen je nach Materialeigenschaften und Dicke der Blechteile große Umformenergien aufgebracht werden. Die Pressen müssen folglich hohe Kräfte aufnehmen und sind daher massiv auszuführen. Ebenfalls schwere Pressen sind notwendig, wenn beispielsweise mehrere Stempel- und Matrizensätze eingebaut werden, um in einem Pressenhub mehrere Fügeverbindungen zu erzeugen. As already stated, depending on the material properties and thickness of the Sheet metal parts large forming energies are applied. The presses have to consequently absorb high forces and are therefore massive. Likewise heavy presses are necessary if, for example, several punch and Die sets can be built in to several in one press stroke Generate joint connections.

Bei Einzelfügevorrichtungen setzt man gewöhnlich die Matrize stationär in einen Schenkel eines C-förmigen Bügels einer Zangenanordnung oder einer analogen Vorrichtung ein, dessen anderer Schenkel eine Führung für einen Stempel aufweist. Für einen Stempelantrieb wird dann ein Hydraulik-Arbeitszylinder oder auch ein Pneumatikzylinder oder eine Exzenterpresse verwendet, dessen Stößel am Stempel angreift, während die Reaktionskräfte über einen Zylinderkorpus in den C-Bügel abgeleitet werden. Für den Hub ist entweder eine Kraft- oder eine Wegbegrenzung vorgesehen. Die erforderlichen Drücke des Hydraulikmediums liegen in der Größenordnung von einigen zehn bar und bis zu 500 bar. Zugehörige Schlauchzu- und -ableitungen sind entsprechend unflexibel, massiv und schwer.In the case of individual joining devices, the die is usually placed in a stationary position in one Leg of a C-shaped bracket of a pair of pliers or an analog Device, the other leg of a guide for a stamp having. A hydraulic working cylinder or is then used for a stamp drive also used a pneumatic cylinder or an eccentric press, the ram attacks on the punch while the reaction forces in a the C-bracket can be derived. For the stroke is either a force or a Path limitation provided. The required pressures of the hydraulic medium are in the order of a few tens of bar and up to 500 bar. Related Hose inlets and outlets are accordingly inflexible, massive and heavy.

Aus den vorstehend geschilderten Gründen bleiben dem mechanischen Fügen bestimmte Einsatzgebiete verschlossen, für die es sich gleichwohl besonders eignen würde. So sind die oben beschriebenen Fügegeräte mit ihren Hydraulikschläuchen häufig zu schwer und unbeweglich, um an schnell arbeitenden Robotern etwa der Kraftfahrzeugindustrie eingesetzt zu werden. Ein weiteres Beispiel sind Hausbauten vor allem in den USA, wo die herkömmlichen Fachwerke aus Holz durch solche aus Stahlprofilen ersetzt werden, bei denen es wünschenswert wäre, daß sie vom Bauherrn selbst gefügt werden könnten. Das Gewicht der herkömmlichen Fügegeräte, die fehlende Flexibilität der Leitungen als auch die geringe Werkzeugausladung machen deren Einsatz für solche Zwecke äußert unpraktisch.For the reasons outlined above, mechanical joining remains closed certain areas of application, for which it is nevertheless special would be suitable. So are the joining devices described above with their Hydraulic hoses are often too heavy and unmovable to move on quickly working robots, for example in the automotive industry. On Another example are house buildings, especially in the USA, where the conventional ones Trusses made of wood can be replaced by those made of steel profiles, where it it would be desirable that they could be assembled by the client himself. The Weight of conventional joining devices, the lack of flexibility of the lines as the low tool radius also makes them suitable for such purposes extremely impractical.

Aufgabe der Erfindung ist es daher, ein Verfahren zum mechanischen Fügen nach dem Oberbegriff des Anspruchs 1 zu schaffen, das den Einsatz leichter und unter Berücksichtigung der Kosten auch der Antriebsaggregate preisgünstiger Geräte ermöglicht.The object of the invention is therefore to provide a method for mechanical joining to create the preamble of claim 1, the use easier and under Consideration of the costs of the drive units of inexpensive devices allows.

Diese Aufgabe wird erfindungsgemäß durch die Merhmale des Anspruchs 1 gelöst. This object is achieved according to the invention solved by the Merhmale of claim 1.

Hierzu überträgt eine auftreffende beschleunigte Masse mehrere Impulse, die als Schläge zu einer Schlagbeanspruchung führen. Die in jedem Einzelschritt zugeführte Energie muß ausreichen, das Material unter Durchlaufen des elastischen Bereiches der Verformungskennlinie bis in den plastischen Bereich hinein umzuformen. Es ist dabei bevorzugt, über diese Mindestenergie nicht weit hinauszugehen, um die Vorteile des erfindungsgemäßen Verfahrens voll nutzen zu können. Die Gesamtheit der Einzelschläge einer mechanischen Fügung ergibt dann das erwünschte Fügeelement, das somit in Teilschritten entsteht.For this purpose, an impinging accelerated mass transmits several impulses, which Blows lead to impact stress. The one in each step supplied energy must be sufficient to pass the material through the elastic range of the deformation characteristic down to the plastic range to transform into it. It is preferred not to go far beyond this minimum energy go out to take full advantage of the method of the invention to be able to. The total of the individual strikes of a mechanical joining results then the desired joining element, which is thus created in partial steps.

Die Einzelschritt-Mindestenergie ist überraschend gering und ermöglicht so, kleine, leichte und preisgünstige Fügegeräte auch für das Fügen von Stahlblechen von zweimal 0,5 mm und darüber zu schaffen. Da die jeweiligen Reaktionskräfte ebenfalls in jedem Einzelschritt aufzunehmen sind, können auch relativ leichte C-Bügel oder analoge Halterungen verwendet werden.The minimum single-step energy is surprisingly low and enables small, light and inexpensive joining devices also for joining steel sheets of twice 0.5 mm and above. Because the respective reaction forces Relatively light C-arms can also be included in every single step or analog mounts can be used.

Es hat sich bewährt, die Einzelschritt-Energiezufuhr dadurch vorzunehmen, daß eine im Abstand von dem Stempel beweglich angeordnete Masse beschleunigt wird und auf den Stempel auftrifft, wobei die in ihr gespeicherte kinetische Energie auf den Stempel übertragen wird. Die Anzahl der erforderlichen Einzelschritte hängt dann von der Größe der Masse und ihrer Auftreffgeschwindigkeit, also dem auf den Stempel übertragenen Impuls, ab. Da die Auftreffmasse um Größenordnungen höher liegen kann als die Masse des Stempels und der mit ihm verbundenen Teile, wird praktisch der gesamte Impuls auf den Stempel übertragen. Dabei empfiehlt es sich, auf der Gegenseite, also hinter der Matrize, eine relativ große Masse anzuordnen, welche die Reaktionskräfte aufnimmt. Ein C-Bügel oder andere Halterungen dienen dann vor allem der Führung des Stempels relativ zu der Matrize und können entsprechend leicht aufgebaut werden. Altemativ kann natürlich auch die Matrize gegenüber dem Stempel verfahrbar ausgebildet sein, so daß die Schlagmasse auf die Matrize wirkt, die dann eine Schlagbeanspruchung überträgt.It has proven useful to carry out the single-step energy supply in that accelerates a mass movably arranged at a distance from the stamp and hits the stamp, the kinetic energy stored in it is transferred to the stamp. The number of individual steps required then depends on the size of the mass and its impact speed, that is impulse transmitted to the stamp. Since the impact mass by orders of magnitude can be higher than the mass of the stamp and with it connected parts, practically all of the impulse is on the stamp transfer. It is recommended that on the opposite side, i.e. behind the die, to arrange a relatively large mass that absorbs the reaction forces. On C-brackets or other mounts then serve primarily to guide the Stamp relative to the die and can be easily built accordingly become. Of course, the die can also be used as an alternative to the stamp be movable so that the impact mass acts on the die, the then transmits an impact load.

Vorteilhafte Angaben über die Schlagzahl, die Schlagdauer und die Schlagfolge sind in den Unteransprüchen aufgeführt. Advantageous information about the number of blows, the duration and the sequence of blows are listed in the subclaims.

Für eine Beschleunigung einer Auftreffmasse bieten sich zahlreiche Möglichkeiten. Beispielhaft genannt sei ein freifliegender Kolben, dessen beiden Seiten abwechselnd und in schneller Folge mit Druckluft beaufschlagt werden. Man kann auch einen Unwucht-Schwingantrieb nach Art von Verdichtungsmaschinen vorsehen. Weiter kann man mittels eines Hubmagneten eine Schlagfeder vorspannen oder auch eine Masse mittels einer Explosivladung gegen den Stempel schießen.There are numerous possibilities for accelerating an impact mass. An example of a free-flying piston is its two sides alternately and in rapid succession of compressed air. One can also an unbalance vibratory drive like compression machines provide. You can also use a solenoid to pre-tension a striking spring or a mass by means of an explosive charge against the stamp shoot.

Eine erfindungsgemäße Vorrichtung für ein schlagendes Fügen mit Einzelschlägen ist in Anspruch 15 angegeben.A device according to the invention for striking joining with single strikes is specified in claim 15.

Weitere Ausgestaltungen der Erfindung sind den Unteransprüchen und der nachfolgenden Beschreibung zu entnehmen.Further embodiments of the invention are the dependent claims and the see the following description.

Die Erfindung wird nachstehend anhand der in den beigefügten Abbildungen dargestellten Ausführungsbeispiele näher erläutert.

  • Fig. 1 zeigt weitgehend schematisiert in Seitenansicht, teilweise geschnitten, ein erstes Ausführungsbeispiel eines Fügegeräts, mit dem das erfindungsgemäße Verfahren durchführbar ist,
  • Fig. 2 zeigt weitgehend schematisiert in Seitenansicht, teilweise geschnitten, ein zweites Ausführungsbeispiel eines Fügegeräts, mit dem das erfindungsgemäße Verfahren durchführbar ist.
    • The invention is explained in more detail below on the basis of the exemplary embodiments illustrated in the attached figures.
  • 1 shows a largely schematic side view, partly in section, of a first exemplary embodiment of a joining device with which the method according to the invention can be carried out,
  • 2 shows a largely schematic side view, partly in section, of a second exemplary embodiment of a joining device with which the method according to the invention can be carried out.

    • Fig. 1 zeigt ein Fügegerät zum mechanischen Fügen mittels Umformen mit einem unteren Schenkel 10 eines C-Bügels 12, in den eine Matrize 14 eines Fügewerkzeugsatzes eingespannt ist. Der Fügewerkzeugsatz umfaßt ferner einen Stempel 16. Die Matrize 14 und der Stempel 16 haben eine Bauart, wie sie beispielsweise in der genannten EP-A-77932 offenbart ist. Der Stempel 16 ist an einem Führungskolben 18 befestigt, der in einer Bohrung 20 eines Ansatzes 22 des C-Bügels 12 geradegeführt und gegen eine Verdrehung gesichert ist. Der Kolben 18 weist einen Bund 24 auf, und eine Feder 26 ist zwischen dem Bund 24 und einer Schulter 28 eingespannt, die den Führungskolben 18 in Richtung Matrize 14 drückt. In der hier dargestellten Ausgangsposition wird somit der Stempel 16 mit seiner Arbeitsfläche gegen die zu fügenden Werkstücke in Anlage gehalten bzw. vorgespannt, um ein Abheben des Stempel 16 von den Blechteilen 30 in einer Anfangsphase des Fügevorgangs zu verhindern.1 shows a joining device for mechanical joining by means of forming with a lower leg 10 of a C-bracket 12, in which a die 14 a Joining tool set is clamped. The joining tool set also includes one Stamp 16. The die 14 and the stamp 16 have a construction as they is disclosed for example in said EP-A-77932. The stamp 16 is on attached to a guide piston 18 which in a bore 20 of a shoulder 22nd of the C-bracket 12 is guided straight and secured against rotation. The Piston 18 has a collar 24 and a spring 26 is between the collar 24 and a shoulder 28 which clamps the guide piston 18 in the direction Die 14 presses. In the starting position shown here, the Stamp 16 with its working surface against the workpieces to be joined held or biased to lift the punch 16 from the sheet metal parts 30 to prevent in an initial phase of the joining process.

    Zu fügende Bleche 30 liegen auf einem weggebrochen dargestellten Stützelement 32 auf und werden von einem vorzugsweise zustellbaren, ebenfalls weggebrochen dargestellten Klemmhalter 34 in der Fügeposition gesichert. Bei den zu fügenden Blechen 30 handelt es sich um mindestens zwei aufeinanderliegende Bleche 30, wobei es durchaus üblich sind, daß mehr als zwei Bleche 30 durch punktförmige Fügeelemente verbunden werden. Die Fügung wird mit einer Wegbegrenzung, z.B. einer pneumatischen Druckabschaltung, ausgeführt, um eine Schlagfolge zu unterbrechen oder zu beenden, wie nachstehend noch erläutert wird. Der notwendige und hinreichende Fügeweg "X" ist der Abstand zwischen dem Bund 24 und einem Anschlagflansch 36. Bei anderen Ausführungsformen kann der Fügeweg auch einstellbar sein.Sheets 30 to be added lie on a support element shown broken away 32 on and are broken away by a preferably deliverable, also shown clamp holder 34 secured in the joining position. With those to be joined Sheets 30 are at least two sheets lying one on top of the other 30, whereby it is quite common that more than two sheets 30 through punctiform joining elements are connected. The coincidence comes with a Path limitation, e.g. a pneumatic pressure cut-off, executed to to interrupt or end a stroke sequence as follows is explained. The necessary and sufficient joining path "X" is the distance between the collar 24 and a stop flange 36. In other embodiments the joining path can also be adjustable.

    Der Ansatz 22 weist in Verlängerung seiner Bohrung 20 eine Geradführungsbohrung 38 für eine Schlagmasse 40 auf. Die Schlagmasse 40 ist in Pfeilrichtung zu einer hinundhergehenden Bewegung relativ zum Führungskolben 18 angetrieben. Die Schlagmasse 40 wird hier von einem freifliegenden Kolben gebildet, dessen beiden Seiten abwechselnd und mit schneller Folge mit Druckluft beaufschlagbar sind. Druckluftzu- und -ableitungen sind nicht dargestellt, da sie in bekannter Weise anbringbar sind. Die Schlagmasse 40 arbeitet schlagend gegen den Führungskolben 18, der den Schlag jeweils auf den Stempel 16 überträgt. Der Stempel 16 wird dadurch zu einem Schlagwerkzeug, das eine Schlagbeanspruchung in die Bleche 30 einleitet. Eine Folge von Einzelschlägen wird durch die abwechselnde Beaufschlagung der Schlagmasse 40 erzeugt, um den Fügeweg "X" durch Schlagbeanspruchung zu fügen. Die Schlagenergie der Einzelschläge führt dazu, daß der Stempel 16 eine einzelne Fügung jeweils in Teilfügeabschnitten ausführt, wobei jeder Einzelschlag den Stempel 16 aus einer zuvor eingenommen Teilfügeposition weiter auf die Matrize 14 zubewegt bis die Fügung fertiggestellt ist.The extension 22 has a straight guide bore in the extension of its bore 20 38 for an impact mass 40. The impact mass 40 is in Arrow direction for a reciprocating movement relative to the guide piston 18 driven. The impact mass 40 is here from a free-flying piston formed, the two sides alternately and with rapid succession with compressed air are acted upon. Compressed air inlets and outlets are not shown because they are in are known to be attachable. The impact mass 40 works against the guide piston 18, which transmits the blow to the stamp 16. The Stamp 16 thereby becomes a striking tool that has a straining load introduces into the sheets 30. A series of single strikes will generated by the alternating application of the impact mass 40 to the Join path "X" by impact stress. The impact energy of the Single strikes leads to the stamp 16 in a single addition each Executes partial joining sections, each individual punch the stamp 16 from a The previously taken part-joining position is moved further towards the die 14 until the Addition is completed.

    Die Schlagzahl beträgt vorzugsweise 10 bis 50 Schläge, insbesondere 10 bis 25 Schläge, pro Sekunde. Die Schlagzahl ist insbesondere abhängig von der Materialart der Bleche, d.h. Aluminium, Stahl, hochfester Stahl etc, und der Blechdicke. Um eine Schlagfolge zu unterbrechen oder zu beenden, wenn der Fügeweg "X" einschließlich Stauchen durchlaufen ist, kann die bereits genannte Wegbegrenzung vorgesehen sein.The number of blows is preferably 10 to 50 blows, in particular 10 to 25 Beats per second. The number of blows depends in particular on the Material type of the sheets, i.e. Aluminum, steel, high-strength steel etc, and the Sheet thickness. To interrupt or end a stroke sequence when the Joining path "X" including upsetting can be followed Path limitation may be provided.

    Die durch die Schlagmasse 40 verursachte Schlagbeanspruchung der Bleche 30 in Form seriell auftretender Schläge sind Schläge mit kurzer Schlagdauer, die vorzugsweise in schneller Folge erzeugt werden. Die Schlagdauer eines Schlages wird vorzugsweise im Bereich zwischen 0,02 und 5 ms gewählt, insbesondere 0,1 bis 0,9 ms. Über die Kürze des Schlages soll erreicht werden, daß die Trägheit einer der bewegten Schlagmasse 40 zugeordneten Gegenmassse, hier der untere Schenkel 10, im wesentlichen nicht überwunden wird. Eine übliche Fügedauer kann dann unter einer Sekunde liegen mit einer Schlagfolge von beispielsweise 4 bis 10 Einzelschlägen beim mechanischen Fügen von Blechen 30 aus Aluminium mit Blechdicken von jeweils 1 mm.The impact stress on the sheets 30 caused by the impact mass 40 in the form of strikes occurring in series are strikes with a short stroke duration, the preferably be generated in rapid succession. The stroke duration of a stroke is preferably selected in the range between 0.02 and 5 ms, in particular 0.1 up to 0.9 ms. The brevity of the stroke should be such that the inertia one of the moving impact masses 40, here the lower one Leg 10, is essentially not overcome. A usual joining time can then be less than a second with a beat sequence of, for example, 4 up to 10 single blows when mechanically joining aluminum sheets 30 with sheet thicknesses of 1 mm each.

    In der Basis des C-Bügels 12 ist durch einen Pfeil 42 angedeutet, daß die Öffnungsweite des Bügels einstellbar ist, etwa um den Bügel über eine Abkantung zu führen, hinter der die Fügung vorzunehmen ist.In the base of the C-bracket 12 is indicated by an arrow 42 that the Opening width of the bracket is adjustable, for example around the bracket via a bend lead behind which the joining is to be made.

    Der Klemmhalter kann zugleich als Abstreifer der gefügten Bleche 30 vom Stempel 16 dienen. Die üblichen federvorgespannten matrizenseitigen Abstreifer sind hier weniger geeignet, da sie die Impulsübertragung von der Schlagmasse 40 auf den Führungskolben bremsen würden. Man könnte hebelartige, gegebenenfalls manuell betätigbare Abstreifer verwenden, die aber zur Vereinfachung der Darstellung nicht gezeichnet sind. The clamp holder can also act as a stripper of the joined sheets 30 from Stamp 16 serve. The usual spring-loaded wipers on the die side are less suitable here because they transmit the momentum from the impact mass 40 would brake on the guide piston. You could use lever-like ones, if necessary use manually operated scrapers, but for simplification the representation are not drawn.

    Für das Einlegen der Werkstücke muß natürlich der Stempel 16 samt seinem Führungskolben 18 gegen die Kraft der Feder 26 nach oben gedrückt werden.For the insertion of the workpieces, of course, the stamp 16 together with his Guide piston 18 are pressed upwards against the force of the spring 26.

    Die auf und ab pendelnde Schlagmasse 40 mit der Luftsäule oder einer Schlagfeder eines pneumatischen Antriebs kann ein schwingendes System darstellen, das außerhalb seiner Resonanzfrequenz, vorzugsweise weit unterhalb seiner Resonanzfrequenz, betrieben wird. Dann bleibt nämlich die Baugruppe, bestehend aus Ansatz 22 und C-Bügel, weitgehend im Stillstand, so daß das Gerät bequem von Hand geführt werden kann.The up and down swinging impact mass 40 with the air column or one A pneumatic system's striking spring can be a vibrating system represent that outside its resonance frequency, preferably far below its resonance frequency is operated. Then the assembly remains consisting of approach 22 and C-bracket, largely at a standstill, so that Device can be easily guided by hand.

    Bei dem erfindungsgemäßen Verfahren wird die Fügung mittels eines einzigen Hubes des Stempels 16 hergestellt, den er in mehreren diskreten Schritten durchläuft.In the method according to the invention, the joining is carried out by means of one Hubes of the stamp 16 produced, which he in several discrete steps passes.

    Gemäß einer nicht dargestellten Weiterbildung des Fügegeräts gemäß Fig. 1 kann die Halterung von Stempel und Matrize zangenförmig sein. Es kann auch eine Kraftumlenkung über eine schiefe Ebene vorgesehen werden. Femer sind auch Anlagen mit mehreren oder vielen Sätzen von Fügewerkzeugen vorstellbar, bei denen hinter den Matrizen eine einzige große gemeinsame Gegenmasse vorgesehen ist.According to a further development, not shown, of the joining device according to FIG. 1 the holder of the punch and die should be pliers-shaped. It can also be one Force redirection over an inclined plane can be provided. Are also more Systems with several or many sets of joining tools imaginable, at those behind the matrices a single large common countermass is provided.

    Eine erfindungsgemäße Vorrichtung zum mechanischen Fügen von Blechteilen umfaßt demnach einen Werkzeugsatz aus mindestens einem Stempel 16 und einer einen Amboß aufweisenden Matrize 14 als Werkzeugsatzelemente, zwischen denen die zu verbindenden Bleche 30 flächig übereinanderliegen, wobei mindestens ein Werkzeugsatzelement 16 oder 14 zur Beaufschlagung der Blechteile 30 mit einer Umformenergie verfahrbar ist, und das verfahrbare Werkzeugelement als Schlagwerkzeug mit einer bewegten Masse 40 ausgebildet ist, mit dem eine Schlagbeanspruchung in Form serietler Schläge kurzer Schlagdauer in die Blechteile 30 einleitbar ist.A device according to the invention for the mechanical joining of sheet metal parts accordingly comprises a tool set comprising at least one stamp 16 and a die 14 having an anvil as tool set elements, between which the sheets 30 to be connected lie flat one above the other, wherein at least one tool set element 16 or 14 for loading the Sheet metal parts 30 is movable with a forming energy, and the movable Tool element designed as a striking tool with a moving mass 40 with which an impact stress in the form of serial blows is shorter Impact duration can be introduced into the sheet metal parts 30.

    Fig. 2 zeigt ein zweites Ausführungsbeispiel eines Fügegerätes, das sich von dem zu Fig. 1 beschriebenen lediglich dadurch unterscheidet, daß die Positionen von Matrize 14 und Stempel 16 ausgetauscht wurden. Die Schlagmasse 40 wirkt hier also auf die Matrize 14, während der Stempel 16 stationär eingespannt ist. Im übrigen gelten die vorstehenden Ausführungen zu Fig. 1 entsprechend.Fig. 2 shows a second embodiment of a joining device, which differs from the to Fig. 1 only differs in that the positions of Die 14 and punch 16 were replaced. The impact mass 40 acts here So on the die 14, while the punch 16 is clamped stationary. in the the rest of the above explanations for Fig. 1 apply accordingly.

    Konstruktiv kann ferner vorgesehen sein, daß die Schlagmasse 40 entweder elektromechanisch oder pneumatisch oder über eine in einer Achsenrichtung eine periodische Auf- und Abbewegung ausführende Anordnung beschleunigt wird. Auch die Zündung eines Explosivstoffes ist einsetzbar. Die unterschiedlichen Antriebsmittel ermöglichen alle ein Schlagfügen gemäß der Erfindung. Bei beiden dargestellen Ausführungsbeispielen kann zudem das nicht als Schlagwerkzeug ausgebildete Werkzeugelement zusätzlich bewegbar ausgebildet sein in bezug auf das Schlagwerkzeug. Bei der Ausbildung gemäß Fig. 1 ist dann die Matrize 14 zusätzlich auf den Stempel 16 zubewegbar.Structurally, it can also be provided that the impact mass 40 either electromechanically or pneumatically or via one in an axis direction arrangement performing periodic up and down movement is accelerated. The ignition of an explosive can also be used. The different Drive means all enable percussion joining according to the invention. By both illustrated embodiments can also not as a striking tool trained tool element to be additionally movable with respect to the striking tool. 1, the die 14 is then can also be moved towards the stamp 16.

    Schließlich kann das erfindungsgemäße Fügegerät mit einer langen Ausladung ausgebildet werden. Dies bedeutet, daß beispielsweise der untere Schenkel 10 gemäß Fig. 1 als langarmiger, einarmiger Hebel ausgebildet sein kann, der sich von dem C-Bügel 12 erstreckt. Gleiches gilt natürlich für den Schenkel, der den zugeordneten Stempel 16 trägt.Finally, the joining device according to the invention can have a long projection be formed. This means that, for example, the lower leg 10 1 can be designed as a long-armed, one-armed lever that extends from the C-bracket 12. The same applies of course to the thigh that the assigned stamp 16 carries.

    Bei einem erfindungsgemäßen Verfahren zum mechanischen Fügen von Blechteilen, bei dem mittels eines Werkzeugsatzes aus mindestens einem Stempel und einer einen Amboß aufweisenden Matrize Blechmaterial unter Wirkung einer Umformenergie aus einer Blechebene gemeinsam herausverlagert und gestaucht wird, ist demnach vorgesehen, daß die Umformenergie bzw. Umformarbeit durch eine Schlagbeanspruchung in Form seriell auftretender Schläge kurzer Schlagdauer erzeugt wird. Die Reaktionskräfte können von einer auf der der auftreffenden Masse abgekehrten Seite des Werkzeugsatzes angeordneten Gegenmasse aufgenommen werden. Die Größe der Impulse kann derart bemessen werden, daß die pro Impuls zugeführte Umformenergie eine relativ geringe plastische Deformation der zu fügenden Materialien bewirkt. In a method according to the invention for the mechanical joining of Sheet metal parts, in which by means of a tool set from at least one Stamp and a die material having an anvil under Effect of a forming energy shifted out of a sheet metal plane together and is compressed, it is accordingly provided that the forming energy or Forming work due to impact stress in the form of serially occurring Short strokes duration is generated. The reaction forces can range from one on the side of the tool set facing away from the impacting mass arranged counterweight can be included. The size of the pulses can be dimensioned such that the forming energy supplied per pulse is one causes relatively little plastic deformation of the materials to be joined.

    Die Schlagfolge der Einzelschläge, die Schlagzahl als auch deren Schlagdauer können gewählt werden, wie vorstehend für die Fügegeräte in Verbindung mit Fig. 1 und 2 beschrieben wurde. Weiterhin kann eine durch die Schlagbeanspruchung pro Schlag von den Blechen 30 aufgenommene Schlagarbeit vorzugsweise im Bereich von 7 bis 20 Joule liegen.The stroke sequence of the individual strokes, the stroke number as well as their stroke duration can be selected as above for the joining devices in connection with Fig. 1 and 2 has been described. Furthermore, one can by the impact stress per stroke received by the sheets 30 preferably in Range from 7 to 20 joules.

    Darüberhinaus kann beim Fügen in die Fügung ein Hilfsfügeteil eingearbeitet werden. Hilfsfügeteile sind hierbei Stanznieten, insbesondere solche mit Halbhohlniet, die in der Fügezone verbleiben.In addition, an auxiliary joining part can be incorporated into the joining become. Auxiliary joining parts are punch rivets, especially those with semi-tubular rivets, that remain in the joining zone.

    Im übrigen wird verwiesen auf die Beschreibung der Fügegeräte gemäß Fig. 1 und 2.For the rest, reference is made to the description of the joining devices according to FIGS. 1 and Second

    Claims (26)

    1. Method of mechanically joining sheet-metal parts, in the case of which, by means of a tool set comprising at least one punch (16) and an anvil-containing die (14), sheet-metal material (30) is jointly displaced out of a sheet-metal plane, into a cavity of the die (14), of which the base is formed by the anvil, and upset, under the action of deformation energy, as a result of which a non-releasable joining element is formed, characterized in that the punch (16) is prestressed against the sheet-metals (30) at the beginning of the joining operation, and a joining element is formed in sub-steps, the deformation energy being produced in said joining elements by impact stressing in the form of a series of blows of short duration, and the energy supplied in each blow being sufficient in order for the material, passing through the elastic region of the characteristic deformation curve into the plastic region, to be deformed.
    2. Method according to Claim 1, characterized in that the duration of the blows is short enough essentially to prevent the inertia of a counteracting mass, which is assigned to a moving mass, from being overcome.
    3. Method according to Claim 1 and 2, characterized in that a moving mass (40) produces blows in quick succession.
    4. Method according to one of Claims 1 to 3, characterized in that the impact stressing is produced by a number of blows amounting to from 10 to 50 blows per second.
    5. Method according to one of Claims 1 to 4, characterized in that the duration of one blow is selected to be in the range between 0.02 and 5 ms.
    6. Method according to one of Claims 1 to 5, characterized in that impact work absorbed by the sheet-metal parts per blow as a result of the impact stressing is in the range from 7-20 joules.
    7. Method according to one of Claims 1 to 6, characterized in that the impact stressing is transmitted via an auxiliary joining part which is incorporated in a joining operation and remains in a joining zone.
    8. Method according to one of Claims 1 to 7, characterized in that the impact stressing is produced by an electromechanically accelerated mass (40).
    9. Method according to one of Claims 1 to 7, characterized in that the impact stressing is produced by a pneumatically accelerated mass (40).
    10. Method according to one of Claims 1 to 7, characterized in that the impact stressing is produced via a moving mass (40) which is accelerated via an arrangement which executes a periodic movement up and down in an axial direction.
    11. Method according to one of Claims 1 to 10, characterized in that the impact stressing is introduced via the punch (16).
    12. Method according to one of Claims 1 to 10, characterized in that the impact stressing is introduced via the die (14).
    13. Method according to one of Claims 1 to 12, characterized in that the impact stressing is produced by a moving mass (40) which is accelerated by the ignition of an explosive.
    14. Method according to one of Claims 1 to 13, characterized in that the impact stressing is produced by a moving mass (40) as part of a vibratory system which is operated outside its resonant frequency.
    15. Apparatus for implementing the method of mechanically joining sheet-metal parts according to one of Claims 1 to 14, having a tool set comprising at least one punch (16) and an anvil-containing die (14) as the tool-set element [sic], between which the metal sheets (30) which are to be connected lie flat one upon the other during the joining operation, it being the case that at least one tool-set element can be displaced in order to subject the sheet-metal parts to deformation energy, characterized in that the punch (16) is assigned a spring arrangement (26) which is suitable for prestressing the punch (16) against the sheet-metal parts (30) at the beginning of the joining operation, and the displaceable tool-set element is designed as a striking tool with a moving mass (40) by means of which impact stressing in the form of a series of blows of short duration can be introduced into the sheet-metal parts (30).
    16. Apparatus according to Claim 15, characterized in that the moving striking mass (40) is formed by a free-floating piston which is guided in a cylinder-like rectilinear guide (38) assigned to the displaceable tool-set element.
    17. Apparatus according to Claim 16, characterized in that the two sides of the piston are subjected alternately and in quick succession to the action of compressed air.
    18. Apparatus according to one of Claims 15 to 17, characterized in that the striking tool is formed by the punch (16), opposite which the die (14) is clamped in a stationary manner in a die mount.
    19. Apparatus according to Claim 18, characterized in that the die (14) can additionally be moved towards the punch (16).
    20. Apparatus according to one of Claims 15 to 19, characterized in that the punch (16) is guided rectilinearly in a punch mount, which is aligned with a rectilinear guide (38) for the striking mass (40).
    21. Apparatus according to Claim 20, characterized in that the punch mount is secured against rotation.
    22. Apparatus according to one of Claims 15 to 21, characterized in that the punch (16) is assigned a displacement-limiting means.
    23. Apparatus according to one of Claims 15 to 17, characterized in that the striking tool is formed by the die (14), opposite which the punch (16) is clamped in a stationary manner.
    24. Apparatus according to one of Claims 15 to 23, characterized in that there is provided a C-bracket (12), in one leg (10) of which the die (14) is retained and in the other leg of which the punch mount is guided.
    25. Apparatus according to Claim 24, characterized in that the legs (10) are each designed as long-limbed, single-armed levers, of which the free ends each bear a punch (16) or die (14).
    26. Apparatus according to one of Claims 15 to 23, characterized in that the mount of the punch and die are formed as a tong structure.
    EP98954413A 1997-10-25 1998-10-14 Mechanical assembly process and device Expired - Lifetime EP0948418B1 (en)

    Applications Claiming Priority (3)

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    DE19747267 1997-10-25
    DE19747267A DE19747267C2 (en) 1997-10-25 1997-10-25 Enforcement method and device for carrying it out
    PCT/EP1998/006507 WO1999021668A1 (en) 1997-10-25 1998-10-14 Mechanical assembly process and device

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    EP0948418B1 true EP0948418B1 (en) 2003-05-14

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    EP (1) EP0948418B1 (en)
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    Families Citing this family (16)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19929778B4 (en) * 1998-09-07 2006-04-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and device for dynamically connecting plate-shaped components
    EP1132158A1 (en) * 2000-03-06 2001-09-12 Hahn, Ortwin, Prof. Dr.-Ing. Method and apparatus for mechanically joining metal parts
    DE10030283C2 (en) * 2000-06-20 2002-06-20 Fraunhofer Ges Forschung Process for the technical connection of plate-shaped components
    SE0100667D0 (en) * 2001-02-26 2001-02-26 Attexor Clinch Systems Sa A method for making joints between sheet formed members and an apparatus for carrying out said method
    DE102004038208B4 (en) * 2004-08-05 2008-11-13 Daimler Ag Method and tool device for forming
    DE102004038209B4 (en) * 2004-08-05 2008-11-13 Daimler Ag Tooling and method of forming
    DE102004052009B3 (en) * 2004-10-25 2005-12-08 Eckold Gmbh & Co Kg Mechanical joining, die cutting, punching, stamping and riveting device for sheet metal components, has spring and component arranged transverse to stroke axis, and tool parts spaced at distance from each other in opening position
    US7698797B2 (en) * 2005-02-02 2010-04-20 Ford Global Technologies Apparatus and method for forming a joint between adjacent members
    DE102005038470B4 (en) * 2005-08-13 2022-08-25 Eckold Gmbh & Co. Kg Forming tool and method for positioning the forming tool
    GB0813883D0 (en) * 2008-07-30 2008-09-03 Henrob Ltd Joining apparatus and method
    EP2637812B1 (en) 2010-11-10 2018-02-21 Henrob Limited Riveting method
    DE102013217633A1 (en) 2013-09-04 2015-03-05 Profil Verbindungstechnik Gmbh & Co. Kg Punch rivet and method of attaching individual components to each other, of which at least one component is formed by a workpiece made of composite material
    DE102013217640A1 (en) 2013-09-04 2015-03-05 Profil Verbindungstechnik Gmbh & Co. Kg Method of attaching a fastener to a workpiece, combining a disk with a die and die
    DE102013217632A1 (en) 2013-09-04 2015-03-05 Profil Verbindungstechnik Gmbh & Co. Kg Punch rivet and methods and apparatus for attaching individual components to each other, of which at least one component is formed by a workpiece made of composite material
    DE102014113438A1 (en) 2013-11-06 2015-05-07 Profil Verbindungstechnik Gmbh & Co. Kg Method for joining sheet metal parts and assembly component as well as setting head and die
    CN204221410U (en) * 2014-10-15 2015-03-25 富鼎电子科技(嘉善)有限公司 Laminating mechanism

    Family Cites Families (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR1087440A (en) * 1953-07-31 1955-02-23 Soudure Elec Languepin Method and device for cold joining of materials
    US3465414A (en) * 1965-10-18 1969-09-09 Albert C Koett Pneumatic stitcher and method of stitching
    DE2213810C3 (en) * 1972-03-22 1980-09-04 Jurid Werke Gmbh, 2056 Glinde Rivet press
    GB2073079B (en) * 1980-02-14 1984-06-20 L & H Designs Fastening apparatus and control systems therefor
    DE3131301A1 (en) * 1981-08-07 1983-02-24 Siemens AG, 1000 Berlin und 8000 München Device for connecting at least two thin-walled workpieces by means of a shearing/crimping method
    DE3261709D1 (en) * 1981-10-28 1985-02-07 Eckold Vorrichtung Apparatus for making a riveted joint of metal sheets
    DE3640896A1 (en) * 1986-11-29 1988-06-16 Eckold Vorrichtung METHOD AND DEVICE FOR RIVETLY JOINING SHEETS

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    DE19747267C2 (en) 1999-08-05
    CA2275976A1 (en) 1999-05-06
    ES2200386T3 (en) 2004-03-01
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    PL187856B1 (en) 2004-10-29
    AU1153799A (en) 1999-05-17
    DE19747267A1 (en) 1999-05-06
    EP0948418A1 (en) 1999-10-13
    US20020038504A1 (en) 2002-04-04
    DE59808356D1 (en) 2003-06-18
    CA2275976C (en) 2006-08-29
    ATE240172T1 (en) 2003-05-15
    JP2001507285A (en) 2001-06-05
    PL334239A1 (en) 2000-02-14

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