EP1875976A1 - Self-piercing riveting unit - Google Patents

Self-piercing riveting unit Download PDF

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Publication number
EP1875976A1
EP1875976A1 EP07011429A EP07011429A EP1875976A1 EP 1875976 A1 EP1875976 A1 EP 1875976A1 EP 07011429 A EP07011429 A EP 07011429A EP 07011429 A EP07011429 A EP 07011429A EP 1875976 A1 EP1875976 A1 EP 1875976A1
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EP
European Patent Office
Prior art keywords
rivet
punching
riveting
stroke
punch
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Granted
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EP07011429A
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German (de)
French (fr)
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EP1875976B1 (en
Inventor
Peter Niedenzu
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP1875976A1 publication Critical patent/EP1875976A1/en
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    • 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
    • B21J15/10—Riveting machines
    • B21J15/28—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups
    • B21J15/285—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups for controlling the rivet upset cycle
    • 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
    • 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
    • B21J15/10—Riveting machines
    • B21J15/28—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups

Definitions

  • the invention relates to a stamped riveting unit for riveting construction, and in particular of bodyshell -Blech inconvenience, according to the preamble of claim 1.
  • the object of the invention is the riveting unit of the type mentioned in such a way that the mentioned faulty joint connections avoided in a structurally simple, series-fitting manner and a consistently high rivet quality is achieved.
  • the joining process is combined with a hardness test in such a way that only such punching elements are installed, which are tested before the beginning of the actual joining operation and classified as within the permissible hardness range, while punching elements with the wrong hardness are removed from the riveting unit that hardness-related imperfect connections that must be subsequently processed in a complex manner or discarded as a committee, not even arise, with the peculiarity that both the hardness test and the joining process with extremely low construction and time required by the riveting even in a single Working stroke are carried out during immediately consecutive Hubphasen.
  • the plastic deformation of the punching element is preferably carried out by a central, integrally formed on the Strin configuration Nietstkovs and the end side in cross-section tapering, expediently spherical segment, pyramidal or conical projection.
  • Punching rivets in particular the semi-hollow punch rivets customary for riveting body panels, but also solid rivets, punched bolts or punched nuts can be used as punching elements.
  • the punch rivet unit 1 shown in the figures is used in conjunction with a Nietmatrize 2 for riveting punch rivets 3 on sheet metal and in particular body parts 4, 5 and has as main components in a housing 6 slidably guided by housing-fixed stop pin 7 stroke-limited sheet holder 8, which is acted upon by a compression spring 9 in the extension direction, and engaging in a central Nietkanal 10 of the sheet holder 8 Nietstempel 11, which takes over the housing-side support of the compression spring 9 and is held by this in contact with the housing bottom.
  • the punch rivet unit 1 and the die 2 are moved apart, so that the sheet holder 8 is lowered under the action of the compression spring 9 in the housing 6 and reaches the lower, limited by the stops 7 stroke position, in which the lower Nietstempelende above of the feed channel 12, whereupon a single punch rivet 3 is introduced via the feed channel 12 into the rivet channel 10 and locked against displacement on the cross slide 14 pushed into the blocking position in the extension direction becomes.
  • the Hubantieb H is activated, such that the housing 6 in the direction of the Nietmatrize 2 process and first the sheet metal parts 4, 5 are pressed from the sheet holder 8 to the Nietmatrize 2.
  • the pressure force N exerted and the stroke s of the riveting punch 11 are detected by a sensor assembly consisting of a pressure cell 17 and a displacement sensor 18 and supplied to a control stage 19 which measures the ratio of the pressure force N to the stroke s as a measure of the degree of hardness determined the rivet and the riveting unit 1 including the cross slide 14 for the subsequent joining step, when the force / displacement ratio N / s within a predetermined, shown in Fig. 3 hatched tolerance range.
  • the punch rivet 3 is then pushed out by the riveting punch 11 via the outlet end of the rivet channel 10 and, in cooperation with the rivet die 2, riveted to the sheet metal parts 4, 5, as can be seen in FIG.
  • the second stroke phase is omitted and the linear actuator H is reversed immediately after the hardness test, so that the punch rivet 3 past the retracted cross slide 14 from the outlet end of the rivet channel 10 freely falls and then z. B. is rejected by a via a check valve 20 released from the control stage 19 compressed air jet as a committee.
  • punch riveting unit 1 With the punch riveting unit 1 according to the invention, it is of course also possible to test other punching elements, such as punched or punched nuts, with respect to the degree of hardness and then to rivet them instead of punched rivets 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Connection Of Plates (AREA)

Abstract

The punching rivet unit for riveting of a steel piece of a body in white, comprises a rivet stamp (11) stroke-movably propelled in a rivet channel (10), a supply mechanism joined in the rivet channel for cyclic supply of a half hollow punching rivet (3), and a sensor arrangement (17, 18) for measuring the thrust force on the punching rivet and the stroke distance of the rivet stamp. Before riveting, the punching rivet is locked in the rivet channel in displaceably fixed manner. The punching rivet is plastically shaped in a part area with increased stroke distance of the rivet stamp. The punching rivet unit for riveting of a steel piece of a body in white, comprises a rivet stamp (11) stroke-movably propelled in a rivet channel (10), a supply mechanism joined in the rivet channel for cyclic supply of a half hollow punching rivet (3), and a sensor arrangement (17, 18) for measuring the thrust force on the punching rivet and the stroke distance of the rivet stamp. Before riveting, the punching rivet is locked in the rivet channel in displaceably fixed manner. The punching rivet is plastically shaped in a part area with increased stroke distance of the rivet stamp. The power/stroke-distance ratio is detected in the locked position of the punching rivet synchronously for the plastic deformation of the sensor arrangement. The sensor arrangement is downstream to a control mechanism (19, 20) releasing the punching rivet outside to a range of tolerance of the determined power/stroke-distance ratio as junk removals and within the range of tolerance for the bonding procedure. The rivet punch is tapered in the cross section at its front surface cooperating with the punching rivet, and has projections (15) pressed with the plastic deformation into the locked position of the punching rivet increasingly into the rivet material. The projection is formed as ball segment-, pyramid- or conical form.

Description

Die Erfindung bezieht sich auf eine Stanznieteinheit zum Vernieten von Bau-, und insbesondere von Rohkarosserie -Blechteilen, nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a stamped riveting unit for riveting construction, and in particular of bodyshell -Blechteilen, according to the preamble of claim 1.

Es ist z. B. aus der DE 197 31 222 A1 bekannt, beim automatischen Vernieten von Blechteilen den Hubweg und die Hubkraft des Nietstempels während des Fügevorgangs mit Hilfe einer Sensoranordnung zu detektieren und die so ermittelten Messwerte auf der Basis eines Vergleichs mit vorgegebenen Soll-Kennwerten zur Qualitätsaussage der Stanznietverbindung heranzuziehen.It is Z. B. from the DE 197 31 222 A1 Known to detect during automatic riveting of sheet metal parts the stroke and the lifting force of Nietstempels during the joining operation by means of a sensor arrangement and to use the measured values determined on the basis of a comparison with predetermined target characteristic values for the quality statement of the punched rivet.

Eine Ursache für eine mangelhafte Qualität derartiger Stanznietverbindungen liegt in einem unrichtigen Härtegrad des Nietmaterials. Ist dieses zu weich, so drückt sich der Niet nicht ins Blechteil, ist es aber zu hart, so verspreizt sich der Niet nicht im Blech und die Nietverbindung ist nicht ausreichend lastsicher. Industriell gefertigte Nietelemente sind im Lieferzustand großen Härtegrad schwankungen unterworfen, die sich bis außerhalb dieses qualitätssichernden Toleranzbereichs erstrecken, so dass es zum Verbau von Nietelementen mit falscher Härte kommt. Die Folge ist eine mangelhafte Fügeverbindung, die mit den bekannten Nietsystemen der eingangs genannten Art, wenn überhaupt, erst nachträglich detektiert wird und dann nachgearbeitet oder als Ausschuss ausgemustert werden muss.One reason for a poor quality of such rivet joints lies in an incorrect degree of hardness of the rivet material. If this is too soft, the rivet is not pressed into the sheet metal part, but if it is too hard, the rivet does not spread in the sheet metal and the riveted joint is not sufficiently load-proof. Industrially manufactured rivet elements are in the state of delivery subject to large degrees of hardness fluctuations, which extend beyond this quality assurance tolerance range, so that it comes to the installation of rivet elements with the wrong hardness. The result is a defective joint connection, which is detected only later with the known riveting systems of the type mentioned, if any, and then has to be reworked or rejected as a committee.

Aufgabe der Erfindung ist es, die Nieteinheit der eingangs genannten Art so auszubilden, dass die erwähnten fehlerhaften Fügeverbindungen auf baulich einfache, seriengerechte Weise vermieden und eine gleichbleibend hohe Nietqualität erzielt wird.The object of the invention is the riveting unit of the type mentioned in such a way that the mentioned faulty joint connections avoided in a structurally simple, series-fitting manner and a consistently high rivet quality is achieved.

Diese Aufgabe wird erfindungsgemäß durch eine Nieteinheit mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved by a riveting unit with the features of claim 1.

In der erfindungsgemäßen Nieteinheit ist der Fügevorgang in der Weise mit einer Härteprüfung kombiniert, dass nur solche Stanzelemente verbaut werden, die vor Beginn des eigentlichen Fügevorgangs geprüft und als innerhalb des zulässigen Härtebereichs klassifiziert sind, während Stanzlemente mit falscher Härte aus der Nieteinheit ausgeschleust werden, so dass härtebedingt mangelhafte Verbindungen, die in aufwändiger Weise nachträglich bearbeitet oder als Ausschuss ausgemustert werden müssen, gar nicht erst entstehen können, mit der Besonderheit, dass sowohl die Härteprüfung als auch der Fügevorgang mit äußerst geringem Bau- und Zeitaufwand durch den Nietstempel selbst in einem einzigen Arbeitshub während unmittelbar aufeinanderfolgender Hubphasen durchgeführt werden.In the riveting unit according to the invention, the joining process is combined with a hardness test in such a way that only such punching elements are installed, which are tested before the beginning of the actual joining operation and classified as within the permissible hardness range, while punching elements with the wrong hardness are removed from the riveting unit that hardness-related imperfect connections that must be subsequently processed in a complex manner or discarded as a committee, not even arise, with the peculiarity that both the hardness test and the joining process with extremely low construction and time required by the riveting even in a single Working stroke are carried out during immediately consecutive Hubphasen.

Im Hinblick auf eine besonders genaue und baulich einfache Bestimmung der Nietmaterialhärte erfolgt die plastische Verformung des Stanzelements vorzugsweise durch einen zentralen, an der Strinfläche des Nietstempels angeformten und sich endseitig im Querschnitt verjüngenden, zweckmäßigerweise kugelsegment-, pyramiden- oder kegelförmigen Vorsprung.With regard to a particularly accurate and structurally simple determination of the rivet hardness, the plastic deformation of the punching element is preferably carried out by a central, integrally formed on the Strinfläche Nietstempels and the end side in cross-section tapering, expediently spherical segment, pyramidal or conical projection.

Als Stanzelemente können Stanzniete, insbesondere die zum Vernieten von Rohkarosserieblechen üblichen Halbhohlstanzniete, aber auch Vollstanzniete, Stanzbolzen oder Stanzmuttern zum Einsatz kommen.Punching rivets, in particular the semi-hollow punch rivets customary for riveting body panels, but also solid rivets, punched bolts or punched nuts can be used as punching elements.

Die Erfindung wird nunmehr anhand eines Ausführungsbeispiels in Verbindung mit den Zeichnungen näher erläutert. Es zeigen in stark schematisierter Darstellung:

Fig. 1
einen Längsschnitt einer Stanznieteinheit nach der Erfindung in der Rückhublage des Nietstempels,
Fig. 2a, b, c
eine vergrößerte Teildarstellung der in Fig. 1 gezeigten Stanznieteinheit unmittelbar vor Beginn (a) und nach Beendigung (b) der Härteprüfung soiwe nach Fertigstellung der Stanznietung (c); und
Fig. 3
ein Diagramm zur Darstellung des Kraft-/Hubwegverlaufs.
The invention will now be explained in more detail with reference to an embodiment in conjunction with the drawings. It shows in a highly schematic representation:
Fig. 1
a longitudinal section of a punch rivet unit according to the invention in the return position of the riveting punch,
Fig. 2a, b, c
an enlarged partial view of the punch riveting unit shown in Figure 1 immediately before the start (a) and after completion (b) of the hardness test soiwe after completion of the punch riveting (c). and
Fig. 3
a diagram illustrating the force / stroke path.

Die in den Fig. gezeigte Stanznieteinheit 1 dient im Zusammenwirken mit einer Nietmatrize 2 zum Vernieten von Stanznieten 3 an Blech- und insbesondere Rohkarosserieteilen 4, 5 und besitzt als Hauptbestandteile einen in einem Gehäuse 6 verschieblich geführten, durch gehäusefeste Anschlagbolzen 7 hubbegrenzten Blechhalter 8, welcher durch eine Druckfeder 9 in Ausfahrrichtung beaufschlagt ist, sowie einen in einen zentralen Nietkanal 10 des Blechhalters 8 eingreifenden Nietstempel 11, welcher die gehäuseseitige Abstützung der Druckfeder 9 übernimmt und durch diese in Anlage am Gehäuseboden gehalten wird.The punch rivet unit 1 shown in the figures is used in conjunction with a Nietmatrize 2 for riveting punch rivets 3 on sheet metal and in particular body parts 4, 5 and has as main components in a housing 6 slidably guided by housing-fixed stop pin 7 stroke-limited sheet holder 8, which is acted upon by a compression spring 9 in the extension direction, and engaging in a central Nietkanal 10 of the sheet holder 8 Nietstempel 11, which takes over the housing-side support of the compression spring 9 and is held by this in contact with the housing bottom.

In den Blechhalter 8 integriert ist ein seitlich in den Nietkanal 10 mündender Zufuhrkanal 12, über den die Stanzniete 3 taktweise luftstromgefördert in den Nietkanal 10 eingeschleust werden. Ferner ist im Blechhalter 8 ein insgesamt mit 13 bezeichneter Sperrmechanismus mit einem z. B. solenoidbetätigten Querschieber 14 angeordnet, welcher zwischen einer den Nietkanal 10 blockierenden Sperrlage (Fig. 1 und 2a, 2b) und einer Freigabestellung umsteuerbar ist.Integrated into the sheet holder 8 is a laterally opening into the rivet channel 10 supply channel 12, via which the punch rivets 3 cyclically air flow conveyed into the rivet channel 10 are introduced. Further, in the sheet holder 8 is a generally designated 13 locking mechanism with a z. B. solenoid-operated cross slide 14, which is reversible between a the rivet channel 10 blocking blocking position (Fig. 1 and 2a, 2b) and a release position.

Zu Beginn des Nietprozesses werden die Stanznieteinheit 1 und die Matrize 2 auseinandergefahren, so dass der Blechhalter 8 unter der Wirkung der Druckfeder 9 im Gehäuse 6 abgesenkt wird und in die untere, durch die Anschläge 7 begrenzte Hubposition gelangt, in der sich das untere Nietstempelende oberhalb des Zufuhrkanals 12 befindet, woraufhin ein einzelner Stanzniet 3 über den Zufuhrkanal 12 in den Nietkanal 10 eingeschleust und an dem in die Sperrlage vorgeschobenen Querschieber 14 in Ausschubrichtung verschiebefest arretiert wird. Sobald diese Nietposition erreicht ist, wird der Hubantieb H aktiviert, derart, dass das Gehäuse 6 in Richtung der Nietmatrize 2 verfahren und zunächst die Blechteile 4, 5 vom Blechhalter 8 an die Nietmatrize 2 angedrückt werden.At the beginning of the riveting process, the punch rivet unit 1 and the die 2 are moved apart, so that the sheet holder 8 is lowered under the action of the compression spring 9 in the housing 6 and reaches the lower, limited by the stops 7 stroke position, in which the lower Nietstempelende above of the feed channel 12, whereupon a single punch rivet 3 is introduced via the feed channel 12 into the rivet channel 10 and locked against displacement on the cross slide 14 pushed into the blocking position in the extension direction becomes. Once this riveting position is reached, the Hubantieb H is activated, such that the housing 6 in the direction of the Nietmatrize 2 process and first the sheet metal parts 4, 5 are pressed from the sheet holder 8 to the Nietmatrize 2.

Bei der weiteren Hubbewegung wird der Nietstempel 11 mehr und mehr in den Nietkanal 10 eingeschoben und ein kugelsegment- oder kegelstumpfförmiger Vorsprung 15 an der Stirnfläche des Nietstempels 11 auf die aus den Fig. 2a und 2b am deutlichsten ersichtliche Weise zunehmend in den Nietkopf 16 des nach wie vor am Querschieber 14 arretierten Stanzniets 3 eingedrückt und so das Nietmaterial in einem begrenzten, sich im Querschnitt stetig vergrößernden, in Fig. 2c gestrichelt dargestellten Teilbereich des Nietkopfes 16 plastisch verformt. Synchron zur plastischen Verformung werden die dabei ausgeübte Druckkraft N und der Hubweg s des Nietstempels 11 durch eine aus einer Druckdose 17 und einem Weggeber 18 bestehende Sensoranordnung detektiert und einer Steuerstufe 19 zugeführt, welche das Verhältnis der Druckraft N zum Hubweg s als Maß für den Härtegrad des Nietmaterials ermittelt und die Nieteinheit 1 einschließlich des Querschiebers 14 für den nachfolgenden Fügeschritt freischaltet, wenn das Kraft-/Wegverhältnis N/s innerhalb eines vorgegebenen, in Fig. 3 schraffiert dargestellten Toleranzbereichs liegt. In der so eingeleiteten Fügephase wird der Stanzniet 3 dann durch den Nietstempel 11 über das Auslassende des Nietkanals 10 ausgeschoben und im Zusammenwirken mit der Nietmatrize 2 mit den Blechteilen 4, 5 vernietet, wie dies aus Fig. 2c ersichtlich ist. Dabei können die Druckkraft N und der Hubweg s des Nietstempels 11 weiterhin gemessen und auf hier nicht näher erläuterte und an sich bekannte Weise ausgewertet werden. Anschließend wird der Hubantrieb H umgesteuert und die Stanznieteinheit 1 gelangt erneut in die Ausgangslage. Ein typischer Kraft-Wegverlauf in den beiden Hubphasen des Nietstempels 11 ist in Fig. 3 in gestrichelten Linien dargestellt.In the further stroke movement of the riveting punch 11 is more and more inserted into the rivet 10 and a spherical segment or frustoconical projection 15 on the end face of the rivet 11 in the most apparent from Figs. 2a and 2b way increasingly into the rivet head 16 of as pressed before at the cross slide 14 punched rivet 3 and so the rivet material in a limited, in cross-section steadily increasing, in Fig. 2c dashed line shown portion of the rivet head 16 plastically deformed. In synchronism with the plastic deformation, the pressure force N exerted and the stroke s of the riveting punch 11 are detected by a sensor assembly consisting of a pressure cell 17 and a displacement sensor 18 and supplied to a control stage 19 which measures the ratio of the pressure force N to the stroke s as a measure of the degree of hardness determined the rivet and the riveting unit 1 including the cross slide 14 for the subsequent joining step, when the force / displacement ratio N / s within a predetermined, shown in Fig. 3 hatched tolerance range. In the joining phase introduced in this way, the punch rivet 3 is then pushed out by the riveting punch 11 via the outlet end of the rivet channel 10 and, in cooperation with the rivet die 2, riveted to the sheet metal parts 4, 5, as can be seen in FIG. 2c. In this case, the compressive force N and the stroke s of the riveting punch 11 can continue to be measured and evaluated in a manner which is not explained in more detail here and known per se. Subsequently, the lifting drive H is reversed and the punch riveting unit 1 returns to the starting position. A typical force-displacement curve in the two stroke phases of the riveting punch 11 is shown in FIG. 3 in dashed lines.

Liegt hingegen die Materialhärte des Stanzniets 3 außerhalb des zugelassenen Toleranzbereichs, so unterbleibt die zweite Hubphase und der Hubantrieb H wird unmittelbar nach der Härteprüfung umgesteuert, so dass der Stanzniet 3 vorbei an dem zurückgezogenen Querschieber 14 aus dem Auslassende des Nietkanals 10 frei herausfällt und dann z. B. durch einen über ein Sperrventil 20 von der Steuerstufe 19 freigeschalteten Druckluftstrahl als Ausschuss ausgesondert wird.If, on the other hand, the material hardness of the punch rivet 3 is outside the permitted tolerance range, the second stroke phase is omitted and the linear actuator H is reversed immediately after the hardness test, so that the punch rivet 3 past the retracted cross slide 14 from the outlet end of the rivet channel 10 freely falls and then z. B. is rejected by a via a check valve 20 released from the control stage 19 compressed air jet as a committee.

Mit der erfindungsgemäßen Stanznieteinheit 1 können anstelle von Stanznieten 3 selbstverständlich auch andere Stanzelemente, wie Stanzbolzen oder Stanzmuttern, bezüglich des Härtegrades geprüft und dann vernietet werden.With the punch riveting unit 1 according to the invention, it is of course also possible to test other punching elements, such as punched or punched nuts, with respect to the degree of hardness and then to rivet them instead of punched rivets 3.

Ebenso ist es in bestimmten Anwendungsfällen auch möglich, auf den Sperrmechanismus 13 zu verzichten und stattdessen das Stanzelement 3 bei der Härteprüfung unmittelbar auf dem Blechteil 4 abzustützen. Bei einem fehlerhaften Härtegrad wird dann der Nietprozess wiederum auf dem Wege über die Steuerstufe 19 abgebrochen und das Nietelement 3 unter Druckluftwirkung oder auch manuell als Ausschuss ausgesondert.Likewise, it is also possible in certain applications to dispense with the locking mechanism 13 and instead support the punching element 3 in the hardness test directly on the sheet metal part 4. In the case of a faulty degree of hardness, the riveting process is then stopped again on the way via the control stage 19 and the rivet element 3 is eliminated under the action of compressed air or manually as rejects.

Claims (4)

Stanznieteinheit zum Vernieten von Bau-, insbesondere Rohkarosserie-Blechteilen, mit einem in einem Nietkanal hubbeweglich angetriebenen Nietstempel, einem in den Nietkanal mündenden Zufuhrmechanismus zur taktweisen Zuführung der Stanzelemente und einer die auf das Stanzelement ausgeübte Druckkraft und den Hubweg des Nietstempels messenden Sensoranordnung, dadurch gekennzeichnet, dass
das Stanzelement (3) vor dem Vernieten verschiebefest im Nietkanal (10) arretiert und seitens des Nietstempels (11) derart kraftbeaufschlagt ist, dass das Stanzelement in einem sich mit zunehmendem Hubweg des Nietstempels vergrößernden, stempelseitigen Teilbereich plastisch verformt wird, und dass das Kraft-/ Hubwegverhältnis (N/s) in der arretierten Position des Stanzelements (3) synchron zur plastischen Verformung von der Sensoranordnung (17, 18) ermittelt und dieser ein das Stanzelement (3) außerhalb eines vorgegebenenToleranzbereichs des ermittelten Kraft-/ Hubwegverhältnisses als Ausschuss aussondernder und innerhalb des Toleranzbereichs für den Fügevorgang freigebender Steuermechanismus (19, 20) nachgeschaltet ist.Punching riveting unit for riveting structural, in particular unfinished body sheet metal parts, with a riveting in a Nietkanal riveting, an opening into the Nietkanal feed mechanism for the cyclic feeding of the punching elements and the pressure exerted on the punching element and the stroke of the Nietstempels measuring sensor arrangement, characterized that
the punching element (3) is locked against displacement in the rivet channel (10) prior to riveting and is subjected to a force on the part of the riveting punch (11) such that the punching element is plastically deformed in a punch-side portion which enlarges with increasing stroke of the rivet punch, and in that the force / Hubwegverhältnis (N / s) in the locked position of the punching element (3) in synchronism with the plastic deformation of the sensor assembly (17, 18) determined and this the punching element (3) outside a predetermined tolerance range of the determined power / Hubwegverhältnisses as committee rejecting and is downstream within the tolerance range for the joining operation releasing control mechanism (19, 20). Stanznieteinheit nach Anspruch 1, dadurch gekennzeichnet, dass
der Nietstempel (11) an seiner mit dem Stanzelement (3) zusammenwirkenden Stirnfläche einen sich endseitig im Querschnitt verjüngenden und bei der plastischen Verformung in der arretierten Position des Stanzelements zunehmend in das Nietmaterial eingedrückten Vorsprung (15) aufweist.Punching unit according to claim 1, characterized in that
the rivet punch (11) on its end face cooperating with the punching element (3) has a projection (15) which tapers at the end in cross-section and is increasingly pressed into the rivet material during the plastic deformation in the locked position of the punching element. Stanznieteinheit nach Anspruch 2, dadurch gekennzeichnet, dass
der Vorsprung (15) kugelsegment-, pyramiden- oder kegelförmig ausgebildet ist.Punching unit according to claim 2, characterized in that
the projection (15) is designed spherical segment, pyramidal or conical. Stanznieteinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
das Nietelement (3) ein Halbhohlstanzniet ist.Punching unit according to one of the preceding claims, characterized in that
the rivet element (3) is a semi-hollow punch rivet.
EP20070011429 2006-07-07 2007-06-12 Self-piercing riveting unit Expired - Fee Related EP1875976B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610031465 DE102006031465A1 (en) 2006-07-07 2006-07-07 Stanznieteinheit

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EP1875976A1 true EP1875976A1 (en) 2008-01-09
EP1875976B1 EP1875976B1 (en) 2009-01-07

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101907605A (en) * 2010-06-22 2010-12-08 昆明理工大学 Method for detecting fatigue damage degree of self-piercing riveting joint for metal plate through dynamic response
CN103157749A (en) * 2011-12-09 2013-06-19 舍弗勒技术股份两合公司 Ceramic riveting die with conductive core
EP2606993A1 (en) * 2011-12-22 2013-06-26 Newfrey LLC Die for self-piercing rivet
CN103196369A (en) * 2013-03-20 2013-07-10 沈阳飞机工业（集团）有限公司 Detection method for bended rivet punch
WO2014025608A1 (en) * 2012-08-07 2014-02-13 Newfrey Llc Rivet setting machine
EP2749365A1 (en) * 2012-12-20 2014-07-02 Newfrey LLC Monitoring method for a joining process
CN104502191A (en) * 2014-09-28 2015-04-08 上海奥林汽车安全系统有限公司 Device for fast detection of hinge main shaft riveting strength
CN105562578A (en) * 2016-03-03 2016-05-11 雄华机械(苏州)有限公司 Riveting machine for car door lock catch assembly
CN106925713A (en) * 2017-05-09 2017-07-07 苏州宝成汽车冲压有限公司 A kind of mistake proofing of riveting automatic detection and mechanical lever type automatic material separator mechanism
CN109047622A (en) * 2018-08-31 2018-12-21 苏州瑞玛精密工业股份有限公司 Connecting rod pressure riveting mechanism
CN117282909A (en) * 2023-11-22 2023-12-26 成都航空职业技术学院 Intelligent riveting control system and intelligent riveting method based on man-machine cooperation

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Cited By (20)

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Publication number Priority date Publication date Assignee Title
CN101907605A (en) * 2010-06-22 2010-12-08 昆明理工大学 Method for detecting fatigue damage degree of self-piercing riveting joint for metal plate through dynamic response
CN103157749A (en) * 2011-12-09 2013-06-19 舍弗勒技术股份两合公司 Ceramic riveting die with conductive core
CN103157749B (en) * 2011-12-09 2017-03-01 舍弗勒技术股份两合公司 Ceramic riveting die with conductive core
EP2606993A1 (en) * 2011-12-22 2013-06-26 Newfrey LLC Die for self-piercing rivet
JP2013128964A (en) * 2011-12-22 2013-07-04 Nippon Pop Rivets & Fasteners Ltd Die for self-piercing rivet
JP2015524356A (en) * 2012-08-07 2015-08-24 ニューフレイ リミテッド ライアビリティ カンパニー Rivet setting machine
US9027220B2 (en) 2012-08-07 2015-05-12 Newfrey Llc Rivet setting machine
CN104703722A (en) * 2012-08-07 2015-06-10 纽弗雷公司 Rivet setting machine
WO2014025608A1 (en) * 2012-08-07 2014-02-13 Newfrey Llc Rivet setting machine
EP2749365A1 (en) * 2012-12-20 2014-07-02 Newfrey LLC Monitoring method for a joining process
CN103196369A (en) * 2013-03-20 2013-07-10 沈阳飞机工业（集团）有限公司 Detection method for bended rivet punch
CN103196369B (en) * 2013-03-20 2015-10-14 沈阳飞机工业（集团）有限公司 The detection method of curved rivet punch
CN104502191B (en) * 2014-09-28 2018-07-13 上海奥林汽车安全系统有限公司 A kind of device for fast detecting for hinge main shaft riveting intensity
CN104502191A (en) * 2014-09-28 2015-04-08 上海奥林汽车安全系统有限公司 Device for fast detection of hinge main shaft riveting strength
CN105562578A (en) * 2016-03-03 2016-05-11 雄华机械(苏州)有限公司 Riveting machine for car door lock catch assembly
CN106925713A (en) * 2017-05-09 2017-07-07 苏州宝成汽车冲压有限公司 A kind of mistake proofing of riveting automatic detection and mechanical lever type automatic material separator mechanism
CN106925713B (en) * 2017-05-09 2018-12-18 苏州宝成汽车冲压有限公司 A kind of riveting detects mistake proofing and mechanical lever type automatic material separator mechanism automatically
CN109047622A (en) * 2018-08-31 2018-12-21 苏州瑞玛精密工业股份有限公司 Connecting rod pressure riveting mechanism
CN117282909A (en) * 2023-11-22 2023-12-26 成都航空职业技术学院 Intelligent riveting control system and intelligent riveting method based on man-machine cooperation
CN117282909B (en) * 2023-11-22 2024-02-09 成都航空职业技术学院 Intelligent riveting control system and intelligent riveting method based on man-machine cooperation

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