EP1514646B1 - Blind rivet nut setting tool - Google Patents

Blind rivet nut setting tool Download PDF

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Publication number
EP1514646B1
EP1514646B1 EP04021402A EP04021402A EP1514646B1 EP 1514646 B1 EP1514646 B1 EP 1514646B1 EP 04021402 A EP04021402 A EP 04021402A EP 04021402 A EP04021402 A EP 04021402A EP 1514646 B1 EP1514646 B1 EP 1514646B1
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EP
European Patent Office
Prior art keywords
tool
housing portion
shaft
housing part
tool housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04021402A
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German (de)
French (fr)
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EP1514646A1 (en
Inventor
Lorenz Stöger
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0007—Tools for fixing internally screw-threaded tubular fasteners
    • B25B27/0014—Tools for fixing internally screw-threaded tubular fasteners motor-driven
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
    • Y10T29/5373—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
    • Y10T29/5373—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
    • Y10T29/53752—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter having rotary drive mechanism

Definitions

  • the invention relates to a setting tool for blind rivet nuts.
  • blind rivet nuts are inserted into holes preferably thin-walled workpieces that can not be threaded, whereupon the pressed with a flange to the workpiece blind rivet nuts are pulled so that at a Sollverformungsstelle on the side facing away from the flange side of the workpiece, a bead of the Blind rivet nuts forms, so that the blind rivet nuts are secured against rotation on the workpiece.
  • screws can be screwed into the blind rivet nuts.
  • US-A-3,838,588 discloses a setting tool for blind rivet nuts with the features of the preamble of claim 1.
  • the support sleeve is rotatably mounted in the nut. For this reason, it can not be checked with the prior art device whether a rivet nut attached to a workpiece is non-rotatably seated in the workpiece since the blind rivet nut can not be brought into the associated hole by the rotating screwdriving tool alone.
  • the present invention has for its object to provide a simple design setting tool for blind rivet nuts with which the blind rivet nuts are securely fastened in holes thin-walled workpieces and with this secure attachment is verifiable.
  • the setting tool has a single electric motor with a drive shaft, which is located in a first housing part and is connected via a gear with a tool housing part, a tool shaft arranged in the tool housing part shaft with which a helical tool is rotatably connected, which from the front end of Tool housing part protrudes, a locking device with which the tool housing part and the tool shaft rotatably coupled to each other or decoupled, a rotation, with the tool shaft is blocked against rotation or release for rotation, a spindle device, the relative axial movement between the tool shaft with the tool and the tool housing part causes when the tool shaft is blocked against rotation, and a support sleeve rotatably connected to the tool shaft and axially against this slidably or rotationally fixed to the tool housing is lockable housing part, so that a torque test is carried out.
  • the tool housing part by means of a piston / cylinder device is axially movable relative to the first housing part.
  • This piston / cylinder device preferably comprises two pneumatic piston / cylinder units, the pistons of which are movable in opposite directions in order to advance the tool housing part with the tool shaft and the tool axially in the direction of the workpiece or to withdraw it from the workpiece.
  • the piston / cylinder device allows a slow, controlled insertion of the blind rivet nut in the provided hole of the workpiece, wherein a stroke of about 100 mm is provided. While the one piston / cylinder unit, the tool housing part, the therein contained screw tool and the When the blind rivet nut is pushed forward in the direction of the workpiece so that the blind rivet nut is inserted into the hole, the other piston / cylinder unit operates to raise this entire assembly again, for example if the hole in the workpiece has been missed.
  • the transmission device with which the rotation of the drive shaft of the electric motor is transmitted to the tool housing part, preferably includes a first pulley which is non-rotatably mounted on the drive shaft, a rotatably connected to the tool housing part second pulley, which may also be formed by a portion of the Circumference of the tool housing part may be integrally provided with teeth, and a toothed belt, which transmits the rotational force from the first pulley to the second pulley. It is provided with great advantage that the first pulley is mounted axially displaceably on the drive shaft, so that the whole gear is back and forth together with the tool housing part.
  • the locking device with which the tool housing part can be locked with the tool shaft for common rotation preferably a surrounding the tool housing part locking sleeve which is reciprocated axially by an actuator between a locking position and an unlocked position along the tool housing part, and a plurality of balls, each sitting with a ball portion in cutouts in the wall of the tool housing part and engage with the rest of the ball portion either radially inward in pockets of the tool shaft or protrude radially outward.
  • the locking sleeve When the balls are partially in the windows of the wall of the tool housing part and the rest in the pockets of the tool shaft and are held in this position by the window radially outwardly overlapping locking sleeve, the tool shaft and thus the screw tool rotates together with the tool housing part.
  • the locking sleeve is retracted by the actuator, preferably the piston of a pneumatic piston / cylinder device, the front end portion of the locking sleeve has a radial clearance between the outer wall of the tool housing portion leaves free, is arranged on the windows, the balls are preferably pressed by lateral slopes of the pockets of the tool shaft radially outward and out of engagement with the tool shaft, so that the tool housing part relative to the tool shaft is freely rotatable.
  • an anti-rotation device is provided for the tool shaft, which preferably sits axially behind the tool shaft and can act on a polygon, for example square of the tool shaft so that the tool shaft is blocked.
  • This spindle device acting between the tool housing part and the tool shaft becomes effective, causing relative axial movement between the tool housing part and the tool shaft.
  • This spindle device preferably consists of a ball rolling nut, which is firmly connected to the tool housing part, and a ball screw, which is an integral part of the tool shaft. Between the ball roller nut and the ball screw a plurality of balls are arranged.
  • the setting tool operates as follows: First, a blind rivet nut is screwed onto the screwing tool by the electric motor rotates the tool housing part and thus rotatably coupled screwing tool. This "screwing" the blind rivet nut ends when the flange of the blind rivet nut reaches the support sleeve at the head end of the tool housing part.
  • the rotationally fixed coupling between the tool housing part and the tool shaft is released by the locking sleeve is pneumatically withdrawn, so that the balls can escape from the pockets of the tool shaft.
  • the anti-rotation device is effective by its cylinder is extended, and engages over the square of the tool shaft, so that the shaft is no longer rotatable.
  • the applied torque can be detected and used to calculate the pulling force with which the blind rivet nut was anchored in the hole.
  • the Ziehweg can be determined.
  • the anti-rotation device and the locking device are formed by a common coupling device, in a first axial position of a coupling element, the tool shaft rotatably coupled to the rotatable tool housing part and in a second axial position of the coupling element with a stationary housing part ,
  • a common coupling device in a first axial position of a coupling element, the tool shaft rotatably coupled to the rotatable tool housing part and in a second axial position of the coupling element with a stationary housing part
  • the tool shaft with a multi-edge approach preferably four-edge approach, slidably engages through a correspondingly shaped through hole of the coupling element.
  • the coupling element is preferably connected to a pneumatic piston for common axial displacement. It is also provided that the coupling element has a front conical coupling surface which is pressed in the first axial position of the coupling element against a corresponding conical surface of the rotatable tool housing part, and a rear conical coupling surface which in the second axial position of the coupling element against a corresponding conical Surface of a stationary housing part is pressed.
  • the arranged at the top end of the tool housing part support sleeve by means of a pneumatic piston against rotation with the rotatable tool housing part can be locked. This locking takes place during the torque test and can also be done before threading the blind rivet nuts.
  • the support sleeve is decoupled from the rotatable tool housing part.
  • a drive shaft 2 of an electric motor is rotatably mounted.
  • the electric motor is arranged on the left in the figure, the end of the drive shaft 2 and fixed to the housing part 1.
  • the drive shaft 2 has a portion 3, for example, has the cross-sectional shape of a polygon.
  • the bore On this section 3 sits a first pulley 4, the bore has a matching with the outer contour of the section 3 inner contour, so that the pulley 4 rotatably connected to the drive shaft 2, but sitting on its portion 3 longitudinally displaceable.
  • first housing part 1 Laterally next to the first housing part 1 sits a further housing part 5, which is reciprocable with the piston rod 6 of a seated in a cylinder 7 pneumatic piston 8 together with the first pulley 4 in the longitudinal direction of the drive shaft 2.
  • a tool housing part 9 is rotatably mounted, with which a second pulley is rotatably connected.
  • a toothed belt 10 transmits the rotational movement of the drive shaft 2 from the pulley 4 to the pulley of the tool housing part 9.
  • a tool shaft 11 which is rotatably connected at its right in the figure with a screw tool 12.
  • the tool housing part 9 and the tool shaft 11 are rotatably coupled to each other by balls 13, when these balls 13 engage with a respective ball portion in lateral pockets 14 of the tool shaft 11, as shown in Figures 1 and 3B.
  • the balls 13 are seated both in the locked to the common rotation of the tool housing part 9 with the tool shaft 11 and in the state shown in Figure 3A unlocked state partially in windows 15 in the wall of the tool housing part.
  • the area of the slots or window 15 is covered by a locking sleeve 16 radially outward, which has at its right in the figure end portion due to a step 17 a portion 18 having a larger inner diameter, so that between the inner wall of the portion 18 and the outer wall of the Tool housing part 9 remains a gap.
  • the locking sleeve 16 has an integrally formed outer annular piston 19 which is seated in a pneumatic cylinder chamber 20, so that the piston 19 with the locking sleeve 16 on the tool housing part 9 is axially movable.
  • the balls 13 are pressed against the bevels 17 of the locking sleeve 16 radially inwardly into engagement with the pockets 14 and through the inner surface of the now advanced locking sleeve 16 held in this position shown in Figure 3B, whereby the rotation of the tool housing part 9 is transmitted to the tool shaft 11.
  • the tool housing part 9 is non-rotatably connected to a ball nut 21, in concentric with an integrally formed with the tool shaft 11 or rotatably connected thereto ball screw 22 sits.
  • end of the tool shaft 11 is rotatably connected to a square 23 to its rotation, to block a cylinder 24 is provided at the left end of the housing 5, in which a retractable piston 25 is arranged, which can be pneumatically brought into engagement with the square 23 against the force of a coil spring 26.
  • a retractable piston 25 is arranged, which can be pneumatically brought into engagement with the square 23 against the force of a coil spring 26.
  • a support sleeve 28 is mounted, which contacts a flange 29 of a Blindnietmutter 30 when this blind rivet nut 30 is screwed in a state of the setting tool on the screw tool 12, in which the tool housing part 9 rotate together with the tool shaft 11 and the screw tool 12.
  • the drive shaft 2 runs the tool shaft 11 with the screw tool 12 (in the illustration of Figure 1) pulled to the left, whereby the blind rivet nut 30 is compressed at the edge of the hole 31 of the workpiece 32 so that a bead 32 is formed.
  • the workpiece 32 is thus clamped between the flange 30 and the bead 32, that the blind rivet nut 30 rotatably seated in the hole 31.
  • Figure 4 shows an alternative embodiment of the invention, which is preferred and differs from the first embodiment essentially in that the anti-rotation device and the locking device are formed by a common coupling means and that the support sleeve is lockable with the rotatable tool housing part.
  • the other components correspond to those of the first embodiment and are identified by the same reference numerals.
  • the tool shaft 11 has at its upper end in Figure 4 a four-Kant approach 33, which passes through a correspondingly shaped through hole 34 of a coupling element 35 slidably connected to the common axial movement with a pneumatic piston 36.
  • the coupling element 35 has at its front end portion a first conical coupling surface 37 and at its rear (in Figure 4 upper) end portion of a likewise conical coupling surface 38th
  • the support sleeve 28 can be rotatably connected in a similar manner by a further coupling member 40 with the rotatable tool housing part 9 in which a pneumatic piston 41, with which the coupling member 40 is rotatably connected, this with its conical peripheral surface 42 against a corresponding conical inner surface of the support sleeve 28th presses.
  • the compressed air inlet is designated in Figure 4 by the reference numeral 45.
  • the coupling element 40 sits axially displaceable on the rotatable tool housing part 9 and is rotatably connected thereto.
  • the support sleeve 46 rotatably, but axially displaceably connected to the tool shaft 47, via a fixedly connected to the support sleeve driver 48.
  • the non-rotatable, but axially displaceable storage is e.g. about square, multi-tooth, pins etc.
  • the support sleeve 28 is rotatably locked to the rotatable tool housing part 9, while it is decoupled when pulling the blind rivet nut.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Transmission Devices (AREA)
  • Insertion Pins And Rivets (AREA)
  • Knives (AREA)

Abstract

The riveting tool has a shaft (11) with a square-section top end (33), and there is a coupling (35) engaging this top end. A pneumatic cylinder with a piston (36) may press the spindle downwards. The coupling has a conical surface (37) and a second conical coupling surface (38) on its upper side, engaging a stationary housing portion (39). The tool includes a threaded spindle (22).

Description

Die Erfindung betrifft ein Setzgerät für Blindnietmuttern. Derartige Blindnietmuttern werden in Löcher bevorzugt dünnwandiger Werkstücke gesteckt, die nicht mit einem Gewinde versehen werden können, woraufhin die mit einem Flansch an das Werkstück angedrückten Blindnietmuttern so gezogen werden, daß sich an einer Sollverformungsstelle an der von dem Flansch abgewandten Seite des Werkstücks eine Wulst der Blindnietmuttern bildet, so daß die Blindnietmuttern verdrehsicher an dem Werkstück befestigt sind. Somit können bei nachfolgenden Montagevorgängen Schrauben in die Blindnietmuttern eingedreht werden.The invention relates to a setting tool for blind rivet nuts. Such blind rivet nuts are inserted into holes preferably thin-walled workpieces that can not be threaded, whereupon the pressed with a flange to the workpiece blind rivet nuts are pulled so that at a Sollverformungsstelle on the side facing away from the flange side of the workpiece, a bead of the Blind rivet nuts forms, so that the blind rivet nuts are secured against rotation on the workpiece. Thus, in subsequent assembly operations screws can be screwed into the blind rivet nuts.

US-A-3,838,588 offenbart ein Setzgerät für Blindnietmuttern mit den Merkmalen des Oberbegriffs des Patentanspruchs 1. Bei dem vorbekannten Setzgerät ist die Stützhülse drehbar in der Mutter gelagert. Aus diesem Grund kann mit dem vorbekannten Gerät nicht überprüft werden, ob eine an einem Werkstück befestigte Blindnietmutter drehfest in dem Werkstück sitzt, da die Blindnietmutter nicht allein durch das sich drehende Schraubenwerkzeug zum Durchdrehen in dem zugehörigen Loch gebracht werden kann. US-A-3,838,588 discloses a setting tool for blind rivet nuts with the features of the preamble of claim 1. In the known setting tool, the support sleeve is rotatably mounted in the nut. For this reason, it can not be checked with the prior art device whether a rivet nut attached to a workpiece is non-rotatably seated in the workpiece since the blind rivet nut can not be brought into the associated hole by the rotating screwdriving tool alone.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein einfach aufgebautes Setzgerät für Blindnietmuttern anzugeben, mit dem die Blindnietmuttern sicher in Löchern dünnwandiger Werkstücke zu befestigen sind und mit dem diese sichere Befestigung überprüfbar ist.The present invention has for its object to provide a simple design setting tool for blind rivet nuts with which the blind rivet nuts are securely fastened in holes thin-walled workpieces and with this secure attachment is verifiable.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst.This object is achieved by the features of claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous embodiments of the invention are characterized in the subclaims.

Das erfindungsgemäße Setzgerät hat einen einzigen Elektromotor mit einer Antriebswelle, die sich in einem ersten Gehäuseteil befindet und über ein Getriebe mit einem Werkzeuggehäuseteil verbunden ist, eine in dem Werkzeuggehäuseteil angeordnete Werkzeugwelle, mit der ein schraubenförmiges Werkzeug drehfest verbunden ist, das aus dem vorderen Ende des Werkzeuggehäuseteils herausragt, eine Verriegelungseinrichtung, mit der das Werkzeuggehäuseteil und die Werkzeugwelle drehfest miteinander koppelbar oder aber entkoppelbar sind, eine Verdrehsicherungseinrichtung, mit der die Werkzeugwelle gegen Drehung blockierbar oder zur Drehung freizugeben ist, eine Spindeleinrichtung, die eine relative Axialbewegung zwischen der Werkzeugwelle mit dem Werkzeug und dem Werkzeuggehäuseteil hervorruft, wenn die Werkzeugwelle gegen Drehung blockiert ist, und eine Stützhülse, die drehfest mit der Werkzeugwelle verbunden und axial gegenüber dieser verschieblich oder drehfest mit dem Werkzeuggehäuseteil verriegelbar ist, so daß eine Drehmomentprüfung durchführbar ist.The setting tool according to the invention has a single electric motor with a drive shaft, which is located in a first housing part and is connected via a gear with a tool housing part, a tool shaft arranged in the tool housing part shaft with which a helical tool is rotatably connected, which from the front end of Tool housing part protrudes, a locking device with which the tool housing part and the tool shaft rotatably coupled to each other or decoupled, a rotation, with the tool shaft is blocked against rotation or release for rotation, a spindle device, the relative axial movement between the tool shaft with the tool and the tool housing part causes when the tool shaft is blocked against rotation, and a support sleeve rotatably connected to the tool shaft and axially against this slidably or rotationally fixed to the tool housing is lockable housing part, so that a torque test is carried out.

Außerdem ist mit Vorzug vorgesehen, daß das Werkzeuggehäuseteil mittels einer Kolben/Zylindereinrichtung axial gegenüber dem ersten Gehäuseteil bewegbar ist. Diese Kolben/Zylindereinrichtung weist bevorzugt zwei pneumatische Kolben/Zylindereinheiten auf, deren Kolben in entgegengesetzten Richtungen bewegbar sind, um den Werkzeuggehäuseteil mit der Werkzeugwelle und dem Werkzeug axial in Richtung des Werkstücks vorzuschieben oder aber von dem Werkstück zurückzuziehen.In addition, it is provided with preference that the tool housing part by means of a piston / cylinder device is axially movable relative to the first housing part. This piston / cylinder device preferably comprises two pneumatic piston / cylinder units, the pistons of which are movable in opposite directions in order to advance the tool housing part with the tool shaft and the tool axially in the direction of the workpiece or to withdraw it from the workpiece.

Diese Ausbildung hat zur Folge, daß das erste Gehäuseteil, an dem der Elektromotor befestigt ist, beim Setzen der Blindnietmuttern stets stationär verbleiben kann, so daß nur das verhältnismäßig leichte Werkzeuggehäuseteil bewegt werden muß. Die Kolben/Zylindereinrichtung ermöglicht ein langsames, geregeltes Einführen der Blindnietmutter in das hierzu vorgesehene Loch des Werkstücks, wobei ein Hub von etwa 100 mm vorgesehen ist. Während die eine Kolben/Zylindereinheit das Werkzeuggehäuseteil, das darin befindliche Schraubenwerkzeug und die darauf aufgenommene Blindnietmutter so in Richtung des Werkstücks vorschiebt, daß die Blindnietmutter in das Loch eingesetzt wird, wird die andere Kolben/Zylindereinheit tätig, um diese gesamte Anordnung wieder anzuheben, wenn beispielsweise das Loch in dem Werkstück verfehlt worden ist.This design has the consequence that the first housing part to which the electric motor is attached, can always remain stationary when setting the blind rivet nuts, so that only the relatively lightweight tool housing part must be moved. The piston / cylinder device allows a slow, controlled insertion of the blind rivet nut in the provided hole of the workpiece, wherein a stroke of about 100 mm is provided. While the one piston / cylinder unit, the tool housing part, the therein contained screw tool and the When the blind rivet nut is pushed forward in the direction of the workpiece so that the blind rivet nut is inserted into the hole, the other piston / cylinder unit operates to raise this entire assembly again, for example if the hole in the workpiece has been missed.

Die Getriebeeinrichtung, mit der die Drehung der Antriebswelle des Elektromotors auf das Werkzeuggehäuseteil übertragen wird, enthält bevorzugt ein erstes Riemenrad, das drehfest auf der Antriebswelle sitzt, ein mit dem Werkzeuggehäuseteil drehfest verbundenes zweites Riemenrad, das auch dadurch gebildet sein kann, daß ein Abschnitt des Umfangs des Werkzeuggehäuseteils einstückig mit Zähnen versehen sein kann, und einen Zahnriemen, der die Drehkraft von dem ersten Riemenrad auf das zweite Riemenrad überträgt. Dabei ist mit großem Vorteil vorgesehen, daß das erste Riemenrad auf der Antriebswelle axial verschieblich gelagert ist, so daß das ganze Getriebe zusammen mit dem Werkzeuggehäuseteil hin- und herbeweglich ist.The transmission device, with which the rotation of the drive shaft of the electric motor is transmitted to the tool housing part, preferably includes a first pulley which is non-rotatably mounted on the drive shaft, a rotatably connected to the tool housing part second pulley, which may also be formed by a portion of the Circumference of the tool housing part may be integrally provided with teeth, and a toothed belt, which transmits the rotational force from the first pulley to the second pulley. It is provided with great advantage that the first pulley is mounted axially displaceably on the drive shaft, so that the whole gear is back and forth together with the tool housing part.

In einer Ausführungsform der Erfindung enthält die Verriegelungseinrichtung, mit der das Werkzeuggehäuseteil mit der Werkzeugwelle zur gemeinsamen Drehung verriegelbar ist, bevorzugt eine das Werkzeuggehäuseteil umgebende Verriegelungshülse, die durch eine Betätigungseinrichtung zwischen einer Verriegelungsstellung und einer Entriegelungsstellung axial entlang des Werkzeuggehäuseteils hin- und herbeweglich ist, sowie mehrere Kugeln, die jeweils mit einem Kugelabschnitt in Ausschnitten in der Wand des Werkzeuggehäuseteils sitzen und mit dem übrigen Kugelabschnitt entweder radial innen in Taschen der Werkzeugwelle eingreifen oder aber radial nach außen ragen. Wenn die Kugeln teilweise in den Fenstern der Wand des Werkzeuggehäuseteils und zum übrigen Teil in den Taschen der Werkzeugwelle sitzen und in dieser Position durch die die Fenster radial außen überdeckende Verriegelungshülse gehalten sind, dreht sich die Werkzeugwelle und damit das Schraubenwerkzeug gemeinsam mit dem Werkzeuggehäuseteil. Wenn die Verriegelungshülse von der Betätigungseinrichtung, vorzugsweise dem Kolben einer pneumatischen Kolben/Zylindereinrichtung so zurückgezogen wird, daß der vordere Endabschnitt der Verriegelungshülse, der einen radialen Zwischenraum zwischen der Außenwand des Werkzeuggehäuseteils freiläßt, an den Fenstern angeordnet ist, werden die Kugeln bevorzugt durch seitliche Schrägen der Taschen der Werkzeugwelle radial nach außen und außer Eingriff mit der Werkzeugwelle gedrückt, so daß das Werkzeuggehäuseteil gegenüber der Werkzeugwelle frei drehbar ist.In one embodiment of the invention, the locking device with which the tool housing part can be locked with the tool shaft for common rotation, preferably a surrounding the tool housing part locking sleeve which is reciprocated axially by an actuator between a locking position and an unlocked position along the tool housing part, and a plurality of balls, each sitting with a ball portion in cutouts in the wall of the tool housing part and engage with the rest of the ball portion either radially inward in pockets of the tool shaft or protrude radially outward. When the balls are partially in the windows of the wall of the tool housing part and the rest in the pockets of the tool shaft and are held in this position by the window radially outwardly overlapping locking sleeve, the tool shaft and thus the screw tool rotates together with the tool housing part. When the locking sleeve is retracted by the actuator, preferably the piston of a pneumatic piston / cylinder device, the front end portion of the locking sleeve has a radial clearance between the outer wall of the tool housing portion leaves free, is arranged on the windows, the balls are preferably pressed by lateral slopes of the pockets of the tool shaft radially outward and out of engagement with the tool shaft, so that the tool housing part relative to the tool shaft is freely rotatable.

Außerdem ist eine Verdrehsicherungseinrichtung für die Werkzeugwelle vorgesehen, die bevorzugt axial hinter der Werkzeugwelle sitzt und auf einen Mehrkant, beispielsweise Vierkant der Werkzeugwelle so einwirken kann, daß die Werkzeugwelle blockiert ist.In addition, an anti-rotation device is provided for the tool shaft, which preferably sits axially behind the tool shaft and can act on a polygon, for example square of the tool shaft so that the tool shaft is blocked.

In diesem Zustand wird die zwischen dem Werkzeuggehäuseteil und der Werkzeugwelle wirkende Spindeleinrichtung wirksam, die eine relative Axialbewegung zwischen dem Werkzeuggehäuseteil und der Werkzeugwelle hervorruft. Diese Spindeleinrichtung besteht bevorzugt aus einer Kugelrollmutter, die fest mit dem Werkzeuggehäuseteil verbunden ist, und einer Kugelrollspindel, die fester Bestandteil der Werkzeugwelle ist. Zwischen der Kugelrollmutter und der Kugelrollspindel sind mehrere Kugeln angeordnet.In this state, the spindle device acting between the tool housing part and the tool shaft becomes effective, causing relative axial movement between the tool housing part and the tool shaft. This spindle device preferably consists of a ball rolling nut, which is firmly connected to the tool housing part, and a ball screw, which is an integral part of the tool shaft. Between the ball roller nut and the ball screw a plurality of balls are arranged.

Das erfindungsgemäße Setzgerät arbeitet folgendermaßen: Zunächst wird eine Blindnietmutter auf das Schraubwerkzeug aufgeschraubt, indem der Elektromotor das Werkzeuggehäuseteil und das damit drehfest gekoppelte Schraubwerkzeug dreht. Dieses "Aufschrauben" der Blindnietmutter endet dann, wenn der Flansch der Blindnietmutter die Stützhülse am Kopfende des Werkzeuggehäuseteils erreicht.The setting tool according to the invention operates as follows: First, a blind rivet nut is screwed onto the screwing tool by the electric motor rotates the tool housing part and thus rotatably coupled screwing tool. This "screwing" the blind rivet nut ends when the flange of the blind rivet nut reaches the support sleeve at the head end of the tool housing part.

Es folgt der Hub der Werkzeuggehäuseteils, bei dem die Blindnietmutter in das Loch des Werkstücks eingeführt wird, bis ihr Flansch fest an dem Werkstück anliegt.This is followed by the stroke of the tool housing part, in which the blind rivet nut is inserted into the hole of the workpiece until its flange rests firmly against the workpiece.

Anschließend wird die drehfeste Kopplung zwischen dem Werkzeuggehäuseteil und der Werkzeugwelle freigegeben, indem die Verriegelungshülse pneumatisch zurückgezogen wird, so daß die Kugeln aus den Taschen der Werkzeugwelle austreten können. Die Verdrehsicherungseinrichtung wird wirksam, indem ihr Zylinder ausgefahren wird, und den Vierkant der Werkzeugwelle übergreift, so daß die Welle nicht mehr drehbar ist. Wenn der Elektromotor nun die Kugelrollmutter des Werkzeuggehäuseteils dreht, wird die Werkzeugwelle mit dem Schraubenwerkzeug axial von dem Werkstück zurückbewegt, wodurch sich an der Sollverformungsstelle der Blindnietmutter die gewünschte Wulst bildet und die Blindnietmutter zugfest und verdrehfest an dem Werkstück befestigt wird.Subsequently, the rotationally fixed coupling between the tool housing part and the tool shaft is released by the locking sleeve is pneumatically withdrawn, so that the balls can escape from the pockets of the tool shaft. The anti-rotation device is effective by its cylinder is extended, and engages over the square of the tool shaft, so that the shaft is no longer rotatable. When the electric motor now rotates the ball rolling nut of the tool housing part, the tool shaft is moved back axially with the screw tool from the workpiece, which forms the desired bead at the Sollverformungsstelle the blind rivet nut and the blind rivet nut is tensile strength and rotationally fixed to the workpiece.

Dabei kann das aufgebrachte Drehmoment erfaßt und daraus die Ziehkraft errechnet werden, mit der die Blindnietmutter in dem Loch verankert wurde. Über den Winkel, um den die Kugelrollmutter gedreht wurde, kann der Ziehweg bestimmt werden.In this case, the applied torque can be detected and used to calculate the pulling force with which the blind rivet nut was anchored in the hole. About the angle by which the ball nut was rotated, the Ziehweg can be determined.

Es muß nun noch überprüft werden, ob die Blindnietmutter drehfest in dem Werkstück sitzt. Dies erfolgt über eine Drehmomentprüfung, bei der wiederum das Werkzeuggehäuseteil mit der Werkzeugwelle drehfest verriegelt wird, so daß sich diese beiden Teile gemeinsam drehen. Bei diesem Test wird ein bestimmtes Drehmoment ausgeübt, beispielsweise 15 Nm, und wenn sich dabei die Blindnietmutter nicht dreht, ist sie korrekt an dem Werkstück befestigt. Bei dieser Drehmomentüberprüfung ist die Verdrehsicherungseinrichtung der Werkzeugwelle natürlich freigegeben, und es erfolgt keine relative axiale Bewegung zwischen dem Werkzeuggehäuseteil und dem Schraubenwerkzeug.It must now be checked whether the blind rivet nut rotatably seated in the workpiece. This is done via a torque test, in turn, the tool housing part is locked against rotation with the tool shaft, so that these two parts rotate together. In this test, a certain torque is applied, for example 15 Nm, and if the blind rivet nut does not rotate, it is correctly attached to the workpiece. In this torque check the anti-rotation device of the tool shaft is of course released, and there is no relative axial movement between the tool housing part and the screw tool.

Bei einer besonders bevorzugten alternativen Ausführungsform der Erfindung sind die Verdrehsicherungseinrichtung und die Verriegelungseinrichtung durch eine gemeinsame Kupplungseinrichtung gebildet, durch die in einer ersten axialen Position eines Kupplungselementes die Werkzeugwelle drehfest mit dem drehbaren Werkzeuggehäuseteil und in einer zweiten axialen Position des Kupplungselementes mit einem stationären Gehäuseteil koppelbar ist. Hierdurch ist nicht nur der Aufbau des Setzgerätes vereinfacht, sondern die drehfeste Verbindung der Werkzeugwelle mit dem drehbaren Werkzeuggehäuseteil kann in jeder Drehposition der Werkzeugwelle unmittelbar erfolgen, während bei der oben bezeichneten ersten Ausführungsform der Erfindung die Taschen der Werkzeugwelle mit den Positionen der Kugeln übereinstimmen müssen.In a particularly preferred alternative embodiment of the invention, the anti-rotation device and the locking device are formed by a common coupling device, in a first axial position of a coupling element, the tool shaft rotatably coupled to the rotatable tool housing part and in a second axial position of the coupling element with a stationary housing part , This is not just the structure simplified setting of the setting tool, but the non-rotatable connection of the tool shaft with the rotatable tool housing part can be made directly in each rotational position of the tool shaft, while in the above-mentioned first embodiment of the invention, the pockets of the tool shaft must coincide with the positions of the balls.

In weiteren Einzelheiten wird vorgeschlagen, daß die Werkzeugwelle mit einem Mehr-Kant-Ansatz, vorzugsweise Vier-Kant-Ansatz, verschieblich eine entsprechend geformte Durchgangsbohrung des Kupplungselementes durchgreift.In further details, it is proposed that the tool shaft with a multi-edge approach, preferably four-edge approach, slidably engages through a correspondingly shaped through hole of the coupling element.

Das Kupplungselement ist bevorzugt mit einem Pneumatikkolben zur gemeinsamen axialen Verschiebung verbunden. Außerdem ist vorgesehen, daß das Kupplungselement eine vordere konische Kupplungsfläche, die in der ersten axialen Position des Kupplungselementes gegen eine entsprechend konische Fläche des drehbaren Werkzeuggehäuseteils angedrückt ist, und eine rückwärtige konische Kupplungsfläche aufweist, die in der zweiten axialen Position des Kupplungselementes gegen eine entsprechend konische Fläche eines stationären Gehäuseteils angedrückt ist.The coupling element is preferably connected to a pneumatic piston for common axial displacement. It is also provided that the coupling element has a front conical coupling surface which is pressed in the first axial position of the coupling element against a corresponding conical surface of the rotatable tool housing part, and a rear conical coupling surface which in the second axial position of the coupling element against a corresponding conical Surface of a stationary housing part is pressed.

Außerdem ist mit Vorteil vorgesehen, daß die am Kopfende des Werkzeuggehäuseteils angeordnete Stützhülse mittels eines Pneumatikkolbens drehfest mit dem drehbaren Werkzeuggehäuseteil verriegelbar ist. Diese Verriegelung erfolgt bei der Drehmomentprüfung und kann auch vor dem Auffädeln der Blindnietmuttern erfolgen. Beim Ziehen der in das Loch des Werkstücks eingesetzten Blindnietmutter ist die Stützhülse von dem drehbaren Werkzeuggehäuseteil entkoppelt.In addition, it is advantageously provided that the arranged at the top end of the tool housing part support sleeve by means of a pneumatic piston against rotation with the rotatable tool housing part can be locked. This locking takes place during the torque test and can also be done before threading the blind rivet nuts. When pulling the blind rivet nut inserted into the hole of the workpiece, the support sleeve is decoupled from the rotatable tool housing part.

Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung einer bevorzugten Ausführungsform des Setzgerätes sowie anhand der Zeichnung. Dabei zeigen auf weitgehend schematische Weise:

Figur 1
eine teilweise geschnittene Seitenansicht einer ersten Ausführungsform des erfindungsgemäßen Setzgerätes;
Figur 2
eine Seitenansicht des Kopfendes des Gerätes gemäß Figur 1 in einem Zustand, in dem eine Blindnietmutter befestigt ist;
Figuren 3A und 3B
die Verriegelungseinrichtung des Setzgerätes gemäß Figur 1 im freien und verriegelten Zustand in einem Längsschnitt;
Figur 4
eine teilweise geschnittene Seitenansicht einer zweiten Ausführungsform des erfindungsgemäßen Gerätes;
Figur 5
eine bevorzugte Lagerung der Stützhülse.
Further details of the invention will become apparent from the following description of a preferred embodiment of the setting device and with reference to the drawing. In a largely schematic way:
FIG. 1
a partially sectioned side view of a first embodiment of the setting device according to the invention;
FIG. 2
a side view of the head end of the device of Figure 1 in a state in which a blind rivet nut is attached;
FIGS. 3A and 3B
the locking device of the setting device according to Figure 1 in the free and locked state in a longitudinal section;
FIG. 4
a partially sectioned side view of a second embodiment of the device according to the invention;
FIG. 5
a preferred storage of the support sleeve.

Es wird zunächst auf Figur 1 Bezug genommen. In einem ersten Gehäuseteil 1 ist eine Antriebswelle 2 eines in der Figur nicht dargestellten Elektromotors drehbar gelagert. Der Elektromotor ist an dem in der Figur linken Ende der Antriebswelle 2 angeordnet und an dem Gehäuseteil 1 befestigt.Reference is first made to FIG. In a first housing part 1, a drive shaft 2 of an electric motor, not shown in the figure, is rotatably mounted. The electric motor is arranged on the left in the figure, the end of the drive shaft 2 and fixed to the housing part 1.

Die Antriebswelle 2 hat einen Abschnitt 3, der beispielsweise die Querschnittsform eines Vielecks hat. Auf diesem Abschnitt 3 sitzt ein erstes Riemenrad 4, dessen Bohrung eine mit der Außenkontur des Abschnitts 3 übereinstimmende Innenkontur hat, so daß das Riemenrad 4 drehfest mit der Antriebswelle 2 verbunden, aber auf ihrem Abschnitt 3 längsverschieblich sitzt.The drive shaft 2 has a portion 3, for example, has the cross-sectional shape of a polygon. On this section 3 sits a first pulley 4, the bore has a matching with the outer contour of the section 3 inner contour, so that the pulley 4 rotatably connected to the drive shaft 2, but sitting on its portion 3 longitudinally displaceable.

Seitlich neben dem ersten Gehäuseteil 1 sitzt ein weiteres Gehäuseteil 5, das mit der Kolbenstange 6 eines in einem Zylinder 7 sitzenden pneumatischen Kolbens 8 zusammen mit dem ersten Riemenrad 4 in Längsrichtung der Antriebswelle 2 hin- und herbewegbar ist.Laterally next to the first housing part 1 sits a further housing part 5, which is reciprocable with the piston rod 6 of a seated in a cylinder 7 pneumatic piston 8 together with the first pulley 4 in the longitudinal direction of the drive shaft 2.

In dem zweiten Gehäuseteil 5 ist ein Werkzeuggehäuseteil 9 drehbar gelagert, mit dem ein zweites Riemenrad drehfest verbunden ist. Ein Zahnriemen 10 überträgt die Drehbewegung der Antriebswelle 2 von dem Riemenrad 4 auf das Riemenrad des Werkzeuggehäuseteils 9.In the second housing part 5, a tool housing part 9 is rotatably mounted, with which a second pulley is rotatably connected. A toothed belt 10 transmits the rotational movement of the drive shaft 2 from the pulley 4 to the pulley of the tool housing part 9.

Innerhalb des Werkzeuggehäuseteils 9 sitzt konzentrisch eine Werkzeugwelle 11, die an ihrem in der Figur rechten Ende mit einem Schraubenwerkzeug 12 drehfest verbunden ist. Das Werkzeuggehäuseteil 9 und die Werkzeugwelle 11 sind durch Kugeln 13 drehfest miteinander koppelbar, wenn diese Kugeln 13 mit jeweils einem Kugelabschnitt in seitliche Taschen 14 der Werkzeugwelle 11 eingreifen, wie dies in den Figuren 1 und 3B dargestellt ist.Within the tool housing part 9 sits concentrically a tool shaft 11, which is rotatably connected at its right in the figure with a screw tool 12. The tool housing part 9 and the tool shaft 11 are rotatably coupled to each other by balls 13, when these balls 13 engage with a respective ball portion in lateral pockets 14 of the tool shaft 11, as shown in Figures 1 and 3B.

Die Kugeln 13 sitzen sowohl in dem zur gemeinsamen Drehung des Werkzeuggehäuseteils 9 mit der Werkzeugwelle 11 verriegelten Zustand als auch in dem in Figur 3A darstellten entriegelten Zustand teilweise in Fenstern 15 in der Wand des Werkzeuggehäuseteils 9.The balls 13 are seated both in the locked to the common rotation of the tool housing part 9 with the tool shaft 11 and in the state shown in Figure 3A unlocked state partially in windows 15 in the wall of the tool housing part. 9

Der Bereich der Schlitze bzw. Fenster 15 wird von einer Verriegelungshülse 16 radial außen überdeckt, die an ihrem in der Figur rechten Endabschnitt infolge einer Abstufung 17 einen Abschnitt 18 mit einem größeren Innendurchmesser aufweist, so daß zwischen der Innenwand des Abschnitts 18 und der Außenwand des Werkzeuggehäuseteils 9 ein Zwischenraum verbleibt.The area of the slots or window 15 is covered by a locking sleeve 16 radially outward, which has at its right in the figure end portion due to a step 17 a portion 18 having a larger inner diameter, so that between the inner wall of the portion 18 and the outer wall of the Tool housing part 9 remains a gap.

Die Verriegelungshülse 16 hat einen angeformten äußeren Ringkolben 19, der in einer pneumatischen Zylinderkammer 20 sitzt, so daß der Kolben 19 mit der Verriegelungshülse 16 auf dem Werkzeuggehäuseteil 9 axial bewegbar ist. Wenn dabei die Verriegelungshülse 16 aus der in Figur 3A dargestellten, zurückgezogenen axialen Lage nach rechts vorgeschoben wird, werden die Kugeln 13 an den Schrägen 17 der Verriegelungshülse 16 radial nach innen in Eingriff mit den Taschen 14 gedrückt und durch die Innenfläche der nun vorgeschobenen Verriegelungshülse 16 in dieser in Figur 3B dargestellten Lage gehalten, wodurch die Drehung des Werkzeuggehäuseteils 9 auf die Werkzeugwelle 11 übertragen wird.The locking sleeve 16 has an integrally formed outer annular piston 19 which is seated in a pneumatic cylinder chamber 20, so that the piston 19 with the locking sleeve 16 on the tool housing part 9 is axially movable. When the locking sleeve 16 is advanced from the retracted axial position shown in Figure 3A to the right, the balls 13 are pressed against the bevels 17 of the locking sleeve 16 radially inwardly into engagement with the pockets 14 and through the inner surface of the now advanced locking sleeve 16 held in this position shown in Figure 3B, whereby the rotation of the tool housing part 9 is transmitted to the tool shaft 11.

Wenn die Verriegelungshülse 16 wieder in die in Figur 3A dargestellte Position zurückgezogen wird, werden die Kugeln 13 durch schräge Seitenflächen der Taschen 14 in die Entriegelungsstellung herausgedrückt.When the locking sleeve 16 is withdrawn back into the position shown in Figure 3A, the balls 13 are pushed out by oblique side surfaces of the pockets 14 in the unlocked position.

Das Werkzeuggehäuseteil 9 ist drehfest mit einer Kugelrollmutter 21 verbunden, in der konzentrisch eine einstückig mit der Werkzeugwelle 11 ausgebildete oder mit dieser drehfest verbundene Kugelrollspindel 22 sitzt. An ihrem in der Figur 1 linken Ende ist die Werkzeugwelle 11 drehfest mit einem Vierkant 23 zu ihrer Verdrehsicherung verbunden, zu dessen Blockierung ein Zylinder 24 am linken Ende des Gehäuses 5 vorgesehen ist, in dem ein ein- bzw. ausfahrbarer Kolben 25 angeordnet ist, der gegen die Kraft einer Schraubenfeder 26 pneumatisch in Eingriff mit dem Vierkant 23 gebracht werden kann. In diesem Zustand ist die Drehung der Werkzeugwelle 11 blockiert, so daß bei sich drehender Kugelrollmutter über die Kugelrollspindel eine axiale Bewegung der Werkzeugwelle 9 mit dem Schraubenwerkzeug 12 gegenüber dem Werkzeuggehäuseteil 9 erfolgt.The tool housing part 9 is non-rotatably connected to a ball nut 21, in concentric with an integrally formed with the tool shaft 11 or rotatably connected thereto ball screw 22 sits. At its left in Figure 1 end of the tool shaft 11 is rotatably connected to a square 23 to its rotation, to block a cylinder 24 is provided at the left end of the housing 5, in which a retractable piston 25 is arranged, which can be pneumatically brought into engagement with the square 23 against the force of a coil spring 26. In this state, the rotation of the tool shaft 11 is blocked, so that when rotating ball nut on the ball screw an axial movement of the tool shaft 9 takes place with the screw tool 12 relative to the tool housing part 9.

An dem in der Figur rechten, vorderen Ende des Werkzeuggehäuseteils 9 ist über ein Axiallager 27 eine Stützhülse 28 gelagert, die ein Flansch 29 einer Blindnietmutter 30 berührt, wenn diese Blindnietmutter 30 in einem Zustand des Setzgerätes auf das Schraubenwerkzeug 12 aufgeschraubt wird, in dem sich das Werkzeuggehäuseteil 9 gemeinsam mit der Werkzeugwelle 11 und dem Schraubenwerkzeug 12 drehen.At the right in the figure, the front end of the tool housing part 9 via a thrust bearing 27, a support sleeve 28 is mounted, which contacts a flange 29 of a Blindnietmutter 30 when this blind rivet nut 30 is screwed in a state of the setting tool on the screw tool 12, in which the tool housing part 9 rotate together with the tool shaft 11 and the screw tool 12.

Wenn anschließend die Verriegelungshülse 16 so (in der Darstellung der Figur 1) nach links bewegt wird, daß die Kugeln 13 in den in Figur 3A dargestellten Zustand gelangen, und der Kolben 25 ausgefahren wird und den Vierkant 23 nichtdrehbar hält, wird bei laufender Antriebswelle 2 die Werkzeugwelle 11 mit dem Schraubenwerkzeug 12 (in der Darstellung der Figur 1) nach links gezogen, wodurch die Blindnietmutter 30 so am Rand des Lochs 31 des Werkstücks 32 gestaucht wird, daß sich eine Wulst 32 bildet. Das Werkstück 32 ist damit so zwischen dem Flansch 30 und der Wulst 32 eingeklemmt, daß die Blindnietmutter 30 drehfest in dem Loch 31 sitzt.When subsequently the locking sleeve 16 is moved to the left (in the illustration of FIG. 1) so that the balls 13 reach the state shown in FIG. 3A and the piston 25 is extended and the square 23 is held non-rotatable, the drive shaft 2 runs the tool shaft 11 with the screw tool 12 (in the illustration of Figure 1) pulled to the left, whereby the blind rivet nut 30 is compressed at the edge of the hole 31 of the workpiece 32 so that a bead 32 is formed. The workpiece 32 is thus clamped between the flange 30 and the bead 32, that the blind rivet nut 30 rotatably seated in the hole 31.

Figur 4 zeigt eine alternative Ausführungsform der Erfindung, die bevorzugt ist und sich von der ersten Ausführungsform im wesentlichen dadurch unterscheidet, daß die Verdrehsicherungseinrichtung und die Verriegelungseinrichtung durch eine gemeinsame Kupplungseinrichtung gebildet sind und daß die Stützhülse mit dem drehbarem Werkzeuggehäuseteil verriegelbar ist. Die anderen Bauteile entsprechen denjenigen der ersten Ausführungsform und sind mit denselben Bezugszeichen gekennzeichnet.Figure 4 shows an alternative embodiment of the invention, which is preferred and differs from the first embodiment essentially in that the anti-rotation device and the locking device are formed by a common coupling means and that the support sleeve is lockable with the rotatable tool housing part. The other components correspond to those of the first embodiment and are identified by the same reference numerals.

Die Werkzeugwelle 11 hat an ihrem in Figur 4 oberen Ende einen Vier-Kant-Ansatz 33, der eine entsprechend geformte Durchgangsbohrung 34 eines Kupplungselementes 35 verschieblich durchgreift, das zur gemeinsamen axialen Bewegung mit einem Pneumatikkolben 36 drehbar verbunden ist. Das Kupplungselement 35 hat an seinem vorderen Endbereich eine erste konische Kupplungsfläche 37 und an seinem rückwärtigen (in Figur 4 oberen) Endbereich eine ebenfalls konische Kupplungsfläche 38.The tool shaft 11 has at its upper end in Figure 4 a four-Kant approach 33, which passes through a correspondingly shaped through hole 34 of a coupling element 35 slidably connected to the common axial movement with a pneumatic piston 36. The coupling element 35 has at its front end portion a first conical coupling surface 37 and at its rear (in Figure 4 upper) end portion of a likewise conical coupling surface 38th

Wenn der Pneumatikkolben 36 durch Druckluftzufuhr in die in der Figur obere Druckluftkammer 43 nach unten bewegt wird, wird das Kupplungselement 35 mit seiner konischen Kupplungsfläche 37 gegen eine entsprechend konische Fläche des drehbaren Werkzeuggehäuseteils 9 gepreßt, wodurch die Werkzeugwelle 11 drehfest mit dem drehbaren Werkzeuggehäuseteil 9 gekoppelt ist.When the pneumatic piston 36 is moved by compressed air supply in the upper air pressure in the figure 43, the coupling element 35 is pressed with its conical coupling surface 37 against a corresponding conical surface of the rotatable tool housing part 9, whereby the tool shaft 11 rotatably coupled to the rotatable tool housing part 9 is.

Durch Druckluftzufuhr in eine untere Druckluftkammer 44 wird das Kupplungselement 35 nach oben bewegt und mit der konischen Kupplungsfläche 38 gegen eine entsprechende Fläche eines stationären Gehäuseteils 39 gepreßt, wodurch die Werkzeugwelle 11 gegen Drehungen blockiert ist.By compressed air supply in a lower compressed air chamber 44, the coupling element 35 is moved upward and pressed with the conical coupling surface 38 against a corresponding surface of a stationary housing part 39, whereby the tool shaft 11 is blocked against rotation.

Die Stützhülse 28 kann auf ähnliche Weise durch ein weiteres Kupplungselement 40 drehfest mit dem drehbaren Werkzeuggehäuseteil 9 verbunden werden, in dem ein Pneumatikkolben 41, mit dem das Kupplungselement 40 drehbar verbunden ist, dieses mit seiner konischen Umfangsfläche 42 gegen eine entsprechende konische Innenfläche der Stützhülse 28 preßt. Der Drucklufteingang ist in Figur 4 mit dem Bezugszeichen 45 bezeichnet. Das Kupplungselement 40 sitzt dabei axial verschieblich auf dem drehbaren Werkzeuggehäuseteil 9 und ist mit diesem drehfest verbunden.The support sleeve 28 can be rotatably connected in a similar manner by a further coupling member 40 with the rotatable tool housing part 9 in which a pneumatic piston 41, with which the coupling member 40 is rotatably connected, this with its conical peripheral surface 42 against a corresponding conical inner surface of the support sleeve 28th presses. The compressed air inlet is designated in Figure 4 by the reference numeral 45. The coupling element 40 sits axially displaceable on the rotatable tool housing part 9 and is rotatably connected thereto.

In einer besonders bevorzugten Ausführungsform der Erfindung ist gemäß Figur 5 die Stützhülse 46 drehfest, jedoch axial verschieblich mit der Werkzeugwelle 47 verbunden, und zwar über einen fest mit der Stützhülse verbundenen Mitnehmer 48. Die drehfeste, aber axial verschiebliche Lagerung erfolgt z.B. über Vierkant, Vielzahn, Stifte etc.In a particularly preferred embodiment of the invention according to Figure 5, the support sleeve 46 rotatably, but axially displaceably connected to the tool shaft 47, via a fixedly connected to the support sleeve driver 48. The non-rotatable, but axially displaceable storage is e.g. about square, multi-tooth, pins etc.

Bei der Drehmomentprüfung ist die Stützhülse 28 drehfest mit dem drehbaren Werkzeuggehäuseteil 9 verriegelt, während sie beim Ziehen der Blindnietmutter entkoppelt ist.In the torque test, the support sleeve 28 is rotatably locked to the rotatable tool housing part 9, while it is decoupled when pulling the blind rivet nut.

Claims (10)

  1. A setting tool for blind rivet bushes including an electric motor with a drive shaft (2), which is arranged in a first housing portion (1) and is connected to a tool housing portion (9) via a transmission device (4, 10), a tool shaft (11) arranged in the tool housing portion (9), with which a screw tool (1,2) is rotationally fixedly connected, a locking device (13, 16; 35, 36), with which the tool housing portion (9) and the tool shaft (14) may be rotationally fixedly coupled together, a rotary locking device (23, 25; 35, 36) with which the tool shaft (11) may be prevented from rotating, a spindle device (21, 22), which, when the tool shalt is prevented from rotating, causes a relative axial movement between the tool shaft (11) and the tool housing portion (9) and a support sleeve (46, 28), which is provided at the head end of the tool housing portion (9) and projects out of the screw tool (12), characterised in that the support sleeve (46, 28) is rotationally fixedly connected to the tool shaft (47) and is movable axially with respect to it or is rotationally fixedly lockable to the tool housing portion (9) so that a torque test may be performed.
  2. A setting tool as claimed in Claim 1, characterised by a piston/cylinder device (7, 8), with which the tool housing portion (9) is axially movable with respect to the first housing portion (1).
  3. A setting tool as claimed in Claim 1. or 2, characterised in that the transmission device includes a first pulley wheel (4), which is connected via a first toothed belt (10) to a second pulley wheel connected to the tool housing portion (9) and the first pulley wheel (4) is axially movably arranged on a section (3) of the drive shaft (2).
  4. A setting tool as claimed in one of Claims 1 to 3, characterised in that the spindle device includes a ball nut (21) and ball screw (22) and that the ball nut (21) is rigidly connected to the tool housing portion (9) whilst the tool shaft (11) includes the ball screw (22).
  5. A setting tool as claimed in one of Claims 1 to 4, characterised in that the locking device includes a locking sleeve (16), which surrounds the tool housing portion (9) and is axially movable by an actuating device between a locked position and an unlocked position, and balls (13), of which a section is situated in windows (15) in the wall of the tool housing portion (9) and the remaining section of the balls either engage radially inwardly into pockets (14) in the tool shaft (11) or project radially outwardly.
  6. A setting tool as claimed in one of Claims 1 to 5, characterised in that the rotary locking device is a piston/cylinder device (24, 25), which is mounted on a stationary housing portion (5) and with which a polygonal shape (23) on the tool shaft may be locked against rotation,
  7. A setting tool as claimed in one of Claims 1 to 4, characterised in that the locking device and the rotary locking device are constituted by a coupling device (35, 36), by which the tool shaft (11) may be rotationally fixedly coupled to the rotatable tool housing portion (9) in a first axial position of a coupling element (35) and to a stationary housing portion (39) in a second axial position.
  8. A setting tool as claimed in Claim 7, characterised in that the tool shaft (11) movably engages through a correspondingly shaped through bore in the coupling element (35) with a polygonal projection (33).
  9. A setting tool as claimed in Claim 7 or 8, characterised in that the coupling element (35) is rotatably connected to a pneumatic piston (36) for common axial movement.
  10. A setting tool as claimed in one of Claims 7 to 9, characterised in that the coupling element (35) includes a front, conical coupling surface (37), which may be pressed in the first axial position against a correspondingly conical surface on the rotatable housing portion (9), and a rear conical surface (38), which, in the second axial position may be pressed against a correspondingly conical surface on a stationary housing portion (39).
EP04021402A 2003-09-12 2004-09-09 Blind rivet nut setting tool Expired - Lifetime EP1514646B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10342143 2003-09-12
DE10342143A DE10342143B4 (en) 2003-09-12 2003-09-12 Setting tool for blind rivet nuts

Publications (2)

Publication Number Publication Date
EP1514646A1 EP1514646A1 (en) 2005-03-16
EP1514646B1 true EP1514646B1 (en) 2007-07-18

Family

ID=34129778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04021402A Expired - Lifetime EP1514646B1 (en) 2003-09-12 2004-09-09 Blind rivet nut setting tool

Country Status (5)

Country Link
US (1) US7346970B2 (en)
EP (1) EP1514646B1 (en)
AT (1) ATE367244T1 (en)
DE (2) DE10342143B4 (en)
DK (1) DK1514646T3 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20013585U1 (en) * 2000-08-04 2000-12-07 Avdel Verbindungselemente GmbH, 30851 Langenhagen Device for loading a rivet module with blind rivet nuts
EP1715978A2 (en) * 2004-01-15 2006-11-02 David J. Fulbright A fastner installaton system
US20070295779A1 (en) * 2005-01-13 2007-12-27 Fulbright David J Fastener installation system
TW201012600A (en) * 2008-09-25 2010-04-01 chong-yuan He Riveter
DE202009007413U1 (en) * 2009-05-25 2009-08-20 Sma Solar Technology Ag Anti-theft device for an inverter
US20110131776A1 (en) * 2009-12-04 2011-06-09 Stoeger Lorenz Automatic device for setting rivets
DE102011109808B4 (en) * 2011-08-08 2022-09-22 Volkswagen Aktiengesellschaft Process for producing a component connection by element friction welding
CN106944587A (en) * 2017-03-23 2017-07-14 苏州三铁电气有限公司 Staking mechanism
EP3597357A1 (en) 2018-07-18 2020-01-22 Newfrey LLC Blind rivet nut setting device
US11673243B2 (en) 2018-09-05 2023-06-13 Milwaukee Electric Tool Corporation Blind rivet nut-setting tool
JP7187339B2 (en) * 2019-01-30 2022-12-12 ポップリベット・ファスナー株式会社 Blind nut tightening device
WO2020244753A1 (en) 2019-06-05 2020-12-10 Newfrey Llc Setting tool for blind rivet nuts
EP3957441B1 (en) * 2020-08-18 2024-03-13 SFS Group Germany GmbH Blind rivet fixer setting device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838588A (en) * 1971-05-14 1974-10-01 A Johnson Apparatus for setting unthreaded pull rivets
JPS5843229B2 (en) * 1980-06-25 1983-09-26 ポツプリベツト・フアスナ−株式会社 Power fastening tool for fasteners
GB8303633D0 (en) * 1983-02-10 1983-03-16 Armstrong Fastenings Installing rivet nuts
JPS59188158U (en) * 1983-05-27 1984-12-13 ポツプリベツト・フアスナ−株式会社 Tightening stroke adjustment structure of blind nut tightening tool
JPH0475882A (en) * 1990-07-13 1992-03-10 Makita Corp Motor driven tool
DE4406946C2 (en) * 1994-03-04 1998-11-19 Gesipa Blindniettechnik Blind rivet nut setting tool
SE508970C2 (en) * 1996-03-20 1998-11-23 Volvo Ab Procedure for attaching a fastener, as well as joints and tools for carrying out the procedure

Also Published As

Publication number Publication date
DK1514646T3 (en) 2007-11-19
DE10342143B4 (en) 2007-07-12
DE502004004342D1 (en) 2007-08-30
ATE367244T1 (en) 2007-08-15
US7346970B2 (en) 2008-03-25
US20050055816A1 (en) 2005-03-17
DE10342143A1 (en) 2005-04-14
EP1514646A1 (en) 2005-03-16

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