EP3144105A1 - Method for removing a blind rivet element from a riveting machine - Google Patents
Method for removing a blind rivet element from a riveting machine Download PDFInfo
- Publication number
- EP3144105A1 EP3144105A1 EP16189638.6A EP16189638A EP3144105A1 EP 3144105 A1 EP3144105 A1 EP 3144105A1 EP 16189638 A EP16189638 A EP 16189638A EP 3144105 A1 EP3144105 A1 EP 3144105A1
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- EP
- European Patent Office
- Prior art keywords
- connecting element
- mandrel
- rotary drive
- rotation
- driving
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 239000011324 bead Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- 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
- B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow 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
- B21J15/16—Drives for riveting machines; Transmission means therefor
- B21J15/26—Drives for riveting machines; Transmission means therefor operated by rotary drive, e.g. by electric motor
-
- 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
-
- 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
- B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
Definitions
- the invention relates to a method for removing a blind rivet element from a riveting tool according to the preamble of claim 1.
- the Blindnietelement is bolted via a first thread assembly with a mandrel of the riveting tool.
- the mandrel is also connected via a second threaded arrangement with a connecting element on the riveting tool.
- the riveting tool comprises a longitudinal drive for axially driving the connecting element and a rotary drive for rotatably driving the connecting element in each case with respect to an axis of rotation of the connecting element.
- Such a riveting tool is for example from the DE 10 2013 105 703 A1 known.
- an emergency program is started by a user input on the riveting device.
- the emergency program then causes on the one hand a driving of the connecting element by the rotary drive in such a direction of rotation that the connection between the mandrel and the connecting element via the second threaded arrangement is released.
- the emergency program causes the emergency program to stop the driving by the rotary drive after reaching a target.
- the essence of the invention now consists, in particular, in the fact that the user is given the idea of how he can detach the blind rivet element from the riveting tool despite a damaged first thread arrangement. He just starts the emergency program.
- the connecting element is first driven by the rotary drive, that over the other, still intact second threaded arrangement of the mandrel is released from the connecting element.
- the rotation ends automatically as soon as the mandrel is released from the connection element.
- a separate tool such as a standard wrench that can attach to the mandrel, the mandrel can now be solved manually by Blindnietelement.
- the state of rotation is preferably monitored by a sensor. Only when it has been detected by means of the sensor that the anti-rotation lock is released, the rotary drive is activated and the release of the mandrel from the connecting element begins.
- the connecting element at least temporarily during the driving of the connecting element by the rotary drive, in addition, the connecting element axially retracted by means of the longitudinal drive in the housing of the riveting tool.
- the connecting element thus, it is drawn into the housing of the riveting, while at the same time the connecting element is unscrewed by rotational movement of the mandrel.
- the axial feed of the connecting element which is generated by the thread rotation, can be compensated by the longitudinal drive.
- the axial relative movement between the housing of the riveting tool and the Blindnietelement can be reduced.
- the rotary drive and the longitudinal drive are synchronized with each other such that during the driving of the connecting element by the rotary drive an axial distance between the housing, the riveting tool and the dummy element is kept constant.
- the axial feed can be calculated via the thread pitch and the applied rotational speed of the connecting element.
- the housing in this context represents, in particular, a casing of parts of the riveting device.
- grab handles on which the user can hold the riveting device, are fixedly provided on the housing.
- a rotary position sensor is arranged on riveting, which serves to determine the rotational position of the rotary drive. Based on the known rotational position of the rotary drive can be determined how many revolutions the connecting element has already made. From this it can in turn be determined when a time is reached at which the connecting element is completely unscrewed from the mandrel. This time may then be the default value, which finally represents the condition for stopping the drive by the rotary drive.
- the invention further comprises a riveting device with a control unit that is set up to control the method according to one of the preceding claims.
- FIG. 1 a riveter 10 is shown, which is set up for carrying out the method according to the invention.
- the riveting tool 10 comprises a housing 20 in which a non-illustrated longitudinal drive 17 and a non-illustrated rotary drive 18 are arranged.
- the two drives 17 and 18 may be executed, as in the DE 10 2013 105 703 A1 is described.
- the longitudinal drive 17 serves to drive a connecting element 15 along the axis of rotation A of the connecting element 15 relative to the housing 20.
- the rotary drive 18 serves to rotate the connecting element 15 about its axis of rotation A relative to the housing 20th
- the connecting element 15 is formed as a sleeve and mounted axially displaceably and rotatably in the housing 20. With one end, the connecting element 15 protrudes out of the housing and has there on its inner circumferential surface a second internal thread 16, which is designed as a left-hand thread. On this second internal thread a mandrel 11 is screwed. The mandrel 11 has for this purpose a second threaded portion 22 which has a second external thread 14, which is also designed as a left-hand thread.
- the connecting element 15 is guided within a guide sleeve 19, which is firmly connected to the housing 20.
- An anti-rotation 24 prevents the mandrel 11 can be rotated relative to the connecting element 15.
- the connecting element 15 is then rotated via the rotary drive 18, the mandrel 11 is also set in rotation, depending on the direction of rotation. If, however, the rotation lock 24 is released, then a relative rotation between the connecting element 15 and mandrel 11 is possible.
- the mandrel 11 can be held by hand, for example, while the rotary actuator 18, the connecting element in rotation. Depending on the direction of rotation of the mandrel 11 is then screwed onto the connecting element 15 or unscrewed from it.
- the anti-rotation device 24 in this case comprises a securing section 23 of the mandrel 11, which comprises on the outer circumference of an outer hexagonal surface 25.
- Thiscomposingsechskant Chemistry 25 is received in an axially displaceable locking sleeve 27 which has a hexagonal surface 26 which is complementary to the matterssechskant Chemistry 25. Gleicher drunk the locking sleeve 27 rotatably but axially displaceable to the connecting element 15 is held.
- FIG. 1 the position of the securing sleeve 27 is shown in a securing position in which the outer hexagonal surface 25 is enclosed by the hexagonal surface 26, and thus constitutes a rotation between the connecting element 15 and the mandrel 11.
- the locking sleeve 27 in the in FIG. 1 dashed line position is shifted axially in the arrow direction, the locking sleeve is in its release position. In this release position, the hexagonal surfaces 25, 26 are disengaged and a relative rotation between connecting element 25 and mandrel 11 is possible.
- FIG. 2 shows a simplified anti-rotation in the cross section comprising the securing portion 23 of the mandrel 11 with the locking sleeve 27 according to the section line II-II, which has been omitted for reasons of simplicity, in the illustration FIG. 2 also to show the guide sleeve 19 and the connecting element 15 in more detail.
- the mandrel 11 further comprises a first threaded portion 21, which comprises a first external thread 12, in this case a right-hand thread. This is screwed into a first internal thread 2 of a blind rivet element 1 in preparation for the riveting operation.
- the Blindnietelement 1 is cup-shaped and has a stop collar 3. A mouthpiece 13 on the guide sleeve 19 serves as a stop for the stop collar 3 during setting of the blind rivet element 1.
- the riveting tool 10 further comprises a control unit 30, which drives the longitudinal drive 17 and the rotary drive 18. Furthermore, a rotational position sensor 29 is provided, by means of which the rotational position of the connecting element 15 and / or the rotary drive 18 can be determined.
- the rotational position sensor may also be part of a brushless motor rotary drive.
- the blind rivet 1 is first screwed onto the first internal thread of the mandrel 11.
- the connecting element 15 is rotated by the rotary drive 18 by a few turns, so that the rotatably connected to the connecting element 15 mandrel 11 is screwed into the blind rivet.
- the longitudinal drive 17 is started in jerky manner, which pulls the connecting element 15 into the housing 20.
- the mouthpiece 13 remains in its position relative to the housing 20 and abuts against the stop collar 3.
- Tensile load of the right moving threaded portion 21 and the concomitant Buchbeetzschlagung the thread 2 the blind rivet 1 is intended deformed and thus set.
- FIG. 3 now shows the state of the riveting and the blind rivet element 1 mounted thereon after a riveting operation. Due to the already mentioned tensile loading via the thread has a Sch Strukturwulst 4 is formed on the blind rivet 1, through which results in the tension with a component, not shown in the receiving bore. Normally, the rotary drive 18 would now rotate counterclockwise, whereby the mandrel 11 would be rotated counterclockwise and from the mandrel 11 is screwed out of the blind rivet 1. In the present case, however, damage to the first internal thread 2 of the blind rivet element 1 or of the first external thread of the mandrel has resulted during the setting process, so that the mandrel 11 can no longer be rotated relative to the blind rivet element 1.
- an emergency program is now started. This is done, for example, by pressing a specific key or key combination by the user at the riveting tool 10. Subsequently, as in FIG. 4 shown, the locking sleeve 27 pulled by the user in the direction of the housing 20, whereby the rotation lock 24 between the connecting element 15 and mandrel 11 is released.
- the longitudinal drive 17 is activated and causes a displacement of the connecting element 15 into the housing 20.
- the connecting element 15 is moved in the present figure to the right, so that the relative alignment between mandrel 11 and housing 20 remains substantially unchanged.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
Verfahren zum Entfernen eines Blindnietelements (1) von einem Nietgerät (10), wobei das Blindnietelement (1) über eine erste Gewindeanordnung (2, 12) mit einem Zugdorn (11) des Nietgeräts (10) verschraubt ist, wobei der Zugdorn (11) über eine zweite Gewindeanordnung (14, 16) mit einem Verbindungselement (15) am Nietgerät (10) verbunden ist, wobei das Nietgerät (10) ein Längsantrieb (17) zum axialen Antreiben des Verbindungselements (15) sowie ein Drehantrieb (18) zum drehbaren Antreiben des Verbindungselements (15) jeweils gegenüber einer Drehachse (A) des Verbindungselements (15) aufweist, das Verfahren umfasst die folgenden Verfahrensschritte: Starten eines Notfallprogramms durch eine Nutzereingabe am Nietgerät (10), das Notfallprogramm veranlasst: ein Antreiben des Verbindungselements (15) durch den Drehantrieb (18) in einer derartigen Drehrichtung, so dass die Verbindung zwischen dem Zugdorn (11) und dem Verbindungselement (15) über die zweite Gewindeanordnung (14, 16) gelöst wird, ein Beenden des Antriebs durch den Drehantrieb (18) nach Erreichen einer Vorgabe.Method for removing a blind rivet element (1) from a riveter (10), wherein the blind rivet element (1) is screwed to a pull mandrel (11) of the riveting device (10) via a first thread arrangement (2, 12), wherein the mandrel (11) is connected via a second threaded arrangement (14, 16) to a connecting element (15) on the riveting device (10), wherein the riveting tool (10) has a longitudinal drive (17) for axially driving the connecting element (15) and a rotary drive (18) for rotatably driving the connecting element (15) in each case opposite an axis of rotation (A) of the connecting element (15), the method comprises the following method steps: starting an emergency program by a user input at the riveter (10), the emergency program causes: driving of the connecting element (15) by the rotary drive (18) in such a direction of rotation, so that the connection between the mandrel (11 ) and the connecting element (15) via the second threaded arrangement (14, 16) is released, a termination of the drive by the rotary drive (18) after reaching a specification.
Description
Die Erfindung betrifft Verfahren zum Entfernen eines Blindnietelements von einem Nietgerät gemäß der Oberbegriff des Anspruchs 1.The invention relates to a method for removing a blind rivet element from a riveting tool according to the preamble of claim 1.
Bei diesem Verfahren ist das Blindnietelement über eine erste Gewindeanordnung mit einem Zugdorn des Nietgeräts verschraubt. Der Zugdorn ist ferner über eine zweite Gewindeanordnung mit einem Verbindungselement am Nietgerät verbunden ist. Das Nietgerät umfasst einen Längsantrieb zum axialen Antreiben des Verbindungselements sowie ein Drehantrieb zum drehbaren Antreiben des Verbindungselements jeweils gegenüber einer Drehachse des Verbindungselements.In this method, the Blindnietelement is bolted via a first thread assembly with a mandrel of the riveting tool. The mandrel is also connected via a second threaded arrangement with a connecting element on the riveting tool. The riveting tool comprises a longitudinal drive for axially driving the connecting element and a rotary drive for rotatably driving the connecting element in each case with respect to an axis of rotation of the connecting element.
Ein solches Nietgerät ist beispielsweise aus der
Bei den gattungsgemäßen Nietgeräten und dem damit durchgeführten Nietsetzvorgängen kommt es jedoch häufig zu Beschädigungen der ersten Gewindeanordnung. Solche Beschädigungen können beim Setzen von Blindnietelementen durchaus infolge von großen Setzkräften auftreten, die zu einer irreversiblen Beschädigung des Gewindes am Zugdorn oder am Blindnietelement kommen. Das Drehmoment des Motors ist aber nur derart eingestellt, um den Zugdorn bei unbeschädigtem Gewinde in das Blindnietelement hinein- und herauszuschrauben. Somit bleibt bislang dem Nutzer nur übrig, den Zugdorn zwischen Blindnietelement und Verbindungselement abzuschrauben oder den Zugdorn abzusägen. Dies kann aber zu Beschädigungen am Blindnietelement, am zu befestigenden Werksstück oder am Nietgerät selbst führen und ist zudem zeitaufwendig.However, with the generic riveting devices and the rivet setting processes carried out with them, damage to the first thread arrangement often occurs. Such damage can occur when setting Blindnietelementen quite as a result of large setting forces that come to an irreversible damage to the thread on the mandrel or on Blindnietelement. However, the torque of the motor is only set in such a way to screw the mandrel in undamaged thread in the blind rivet and out. Thus far remains the user only left to unscrew the mandrel between blind rivet and connecting element or saw off the mandrel. However, this can lead to damage to the Blindnietelement, the workpiece to be fastened or the riveting tool itself and is also time consuming.
Es ist daher Aufgabe der vorliegenden Erfindung, das Entfernen eines Blindnietelements vom Nietgerät nach dem Setzgerät insbesondere für den Fall zu vereinfachen, falls das übliche Abschrauben des Zugdorns vom Blindnietelement aufgrund einer Beschädigung der ersten Gewindeanordnung nicht mehr wie üblich möglich ist.It is therefore the object of the present invention to simplify the removal of a blind rivet element from the riveting tool after the setting tool, in particular for the case if the usual unscrewing of the pull mandrel from the blind rivet element is no longer possible as usual due to damage to the first thread arrangement.
Die der Erfindung zugrunde liegende Aufgabe wird gelöst durch ein Verfahren nach Anspruch 1; bevorzugte Ausgestaltungen ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung.The object underlying the invention is achieved by a method according to claim 1; preferred embodiments will be apparent from the dependent claims and the description below.
Erfindungsgemäß ist nun in Verbindung mit den Merkmalen des Oberbegriffs des Anspruchs 1 vorgesehen, dass ein Notfallprogramm durch eine Nutzereingabe am Nietgerät gestartet wird. Das Notfallprogramm veranlasst dann zum einen ein Antreiben des Verbindungselements durch den Drehantrieb in einer derartigen Drehrichtung, dass die Verbindung zwischen dem Zugdorn und dem Verbindungselement über die zweite Gewindeanordnung gelöst wird. Zum anderen veranlasst das Notfallprogramm ein Beenden des Antreibens durch den Drehantrieb nach Erreichen einer Vorgabe.According to the invention, it is now provided in conjunction with the features of the preamble of claim 1 that an emergency program is started by a user input on the riveting device. The emergency program then causes on the one hand a driving of the connecting element by the rotary drive in such a direction of rotation that the connection between the mandrel and the connecting element via the second threaded arrangement is released. On the other hand causes the emergency program to stop the driving by the rotary drive after reaching a target.
Der Kern der Erfindung besteht nun insbesondere darin, dass dem Nutzer die Überlegung abgenommen wird, wie er trotz beschädigter erster Gewindeanordnung das Blindnietelement vom Nietgerät lösen kann. Er startet dafür lediglich das Notfallprogramm. Dabei wird zunächst das Verbindungselement derart durch den Drehantrieb angetrieben, dass über die andere, noch intakte zweite Gewindeanordnung der Zugdorn vom Verbindungselement gelöst wird. Die Drehung endet automatisch, sobald der Zugdorn vom Verbindungselement gelöst ist. Hiermit wird zunächst erreicht, dass das Nietgerät mitsamt Gehäuse und Verbindungselement vom Blindnietelement entfernt wird. Es verbleibt lediglich der Zugdorn am Blindnietelement. Durch ein separates Werkzeug, beispielsweise einem üblichen Schraubenschlüssel, welches am Zugdorn ansetzen kann, kann der Zugdorn nun manuell vom Blindnietelement gelöst werden. Mit der Verwendung entsprechender Werkzeuge können dabei auch Drehmomente aufgebracht werden, die das maximale Drehmoment des Nietgeräts deutlich übersteigen, wodurch trotz beschädigter erster Gewindeanordnung der Zugdorn vom Blindnietelement abgeschraubt werden kann. Sollte dies auch nicht möglich sein, kann der Zugdorn nach wie vor abgesägt werden. Da das Nietgerät nun bereits entfernt ist, gestaltet sich das Absägen deutlich einfacher.The essence of the invention now consists, in particular, in the fact that the user is given the idea of how he can detach the blind rivet element from the riveting tool despite a damaged first thread arrangement. He just starts the emergency program. In this case, the connecting element is first driven by the rotary drive, that over the other, still intact second threaded arrangement of the mandrel is released from the connecting element. The rotation ends automatically as soon as the mandrel is released from the connection element. This is initially achieved that the riveting tool is removed together with the housing and connecting element from Blindnietelement. All that remains is the mandrel on the blind rivet element. By a separate tool, such as a standard wrench that can attach to the mandrel, the mandrel can now be solved manually by Blindnietelement. With the use of appropriate tools while torques can be applied, which exceed the maximum torque of the riveting significantly, which can be unscrewed despite the damaged first thread assembly of the mandrel from Blindnietelement. If this is not possible, the mandrel can still be sawn off. Since the riveting tool is already removed, sawing is much easier.
Dabei wird in einer bevorzugten Ausgestaltung zunächst eine Verdrehsicherung, durch welche der Zugdorn verdrehsicher am Verbindungselement gehalten ist, gelöst. Erst anschließend erfolgt das Antreiben des Verbindungselements durch den Drehantrieb.In this case, in a preferred embodiment, first a rotation, by which the mandrel is held against rotation on the connecting element solved. Only then does the driving of the connecting element by the rotary drive.
Der Zustand der Verdrehsicherung wird dabei vorzugsweise durch einen Sensor überwacht. Erst wenn anhand des Sensors erkannt wurde, dass die Verdrehsicherung gelöst ist, wird der Drehantrieb aktiviert und das Lösen des Zugdorns vom Verbindungselement beginnt.The state of rotation is preferably monitored by a sensor. Only when it has been detected by means of the sensor that the anti-rotation lock is released, the rotary drive is activated and the release of the mandrel from the connecting element begins.
In einer vorteilhaften Weiterbildung wird, zumindest zeitweise während des Antreibens des Verbindungselements durch den Drehantrieb, zusätzlich das Verbindungselement anhand des Längsantriebs axial in das Gehäuse des Nietgeräts eingefahren. Das Verbindungselement wird also in das Gehäuse des Nietgeräts eingezogen, während zugleich das Verbindungselement durch Drehbewegung vom Zugdorn abgeschraubt wird. Der axiale Vorschub des Verbindungselements, der durch die Gewindeverdrehung erzeugt wird, kann so durch den Längsantrieb ausgeglichen werden. Die axiale Relativbewegung zwischen dem Gehäuse des Nietgeräts und dem Blindnietelement kann reduziert werden.In an advantageous development, at least temporarily during the driving of the connecting element by the rotary drive, in addition, the connecting element axially retracted by means of the longitudinal drive in the housing of the riveting tool. The connecting element Thus, it is drawn into the housing of the riveting, while at the same time the connecting element is unscrewed by rotational movement of the mandrel. The axial feed of the connecting element, which is generated by the thread rotation, can be compensated by the longitudinal drive. The axial relative movement between the housing of the riveting tool and the Blindnietelement can be reduced.
Dabei ist es besonders bevorzugt, wenn der Drehantrieb und der Längsantrieb derart zueinander synchronisiert sind, dass während des Antreibens des Verbindungselements durch den Drehantrieb ein axialer Abstand zwischen dem Gehäuse, des Nietgeräts und dem Blindelement konstant gehalten wird. Der axiale Vorschub kann über die Gewindesteigung und der anliegenden Drehgeschwindigkeit des Verbindungselements berechnet werden.It is particularly preferred if the rotary drive and the longitudinal drive are synchronized with each other such that during the driving of the connecting element by the rotary drive an axial distance between the housing, the riveting tool and the dummy element is kept constant. The axial feed can be calculated via the thread pitch and the applied rotational speed of the connecting element.
Das Gehäuse stellt in diesem Zusammenhang insbesondere eine Ummantelung von Teilen des Nietgeräts dar. Insbesondere sind Haltegriffe, an denen der Nutzer das Nietgerät halten kann, fest am Gehäuse vorgesehen.The housing in this context represents, in particular, a casing of parts of the riveting device. In particular, grab handles, on which the user can hold the riveting device, are fixedly provided on the housing.
Vorzugsweise ist am Nietgerät ein Drehpositionsgeber angeordnet, der zur Ermittlung der Drehstellung des Drehantriebs dient. Anhand der bekannten Drehstellung des Drehantriebs kann ermittelt werden, wie viele Umdrehungen das Verbindungselement bereits vorgenommen hat. Hieraus kann wiederum ermittelt werden, wann ein Zeitpunkt erreicht ist, bei dem das Verbindungselement vollständig vom Zugdorn abgeschraubt ist. Dieser Zeitpunkt kann dann der Vorgabewert sein, der schließlich die Bedingung zum Beenden des Antreibens durch den Drehantrieb darstellt.Preferably, a rotary position sensor is arranged on riveting, which serves to determine the rotational position of the rotary drive. Based on the known rotational position of the rotary drive can be determined how many revolutions the connecting element has already made. From this it can in turn be determined when a time is reached at which the connecting element is completely unscrewed from the mandrel. This time may then be the default value, which finally represents the condition for stopping the drive by the rotary drive.
Die Erfindung umfasst ferner ein Nietgerät mit einer Steuerungseinheit, die eingerichtet ist, das Verfahren nach einem der vorherigen Ansprüche zu steuern.The invention further comprises a riveting device with a control unit that is set up to control the method according to one of the preceding claims.
Die Erfindung wird anhand der Figuren nachfolgend näher erläutert. Hierin zeigt
- Figur 1
- schematisch den Aufbau eines erfindungsgemäßen Nietgeräts mit verwendetem Blindnietelement im Querschnitt;
Figur 2- eine Sicherungseinrichtung des Nietgeräts nach
Figur 1 im Querschnitt entlang der Schnittlinie II-II inFigur 1 ; Figur 3- das Nietgerät nach
Figur 1 in einer ersten Phase des erfindungsgemäßen Verfahrens; Figur 4- das Nietgerät nach
in einer zweiten Phase des erfindungsgemäßen Verfahrens;Figur 2 - Figur 5
- das Nietgerät nach
in einer dritten Phase des erfindungsgemäßen Verfahrens;Figur 2 - Figur 6
- das Nietgerät nach
in einer vierten Phase des erfindungsgemäßen Verfahrens.Figur 2
- FIG. 1
- schematically the structure of a riveting device according to the invention with blind rivet element used in cross section;
- FIG. 2
- a safety device of the riveting after
FIG. 1 in cross section along the section line II-II inFIG. 1 ; - FIG. 3
- the riveting tool after
FIG. 1 in a first phase of the process according to the invention; - FIG. 4
- the riveting tool after
FIG. 2 in a second phase of the process according to the invention; - FIG. 5
- the riveting tool after
FIG. 2 in a third phase of the process according to the invention; - FIG. 6
- the riveting tool after
FIG. 2 in a fourth phase of the process according to the invention.
In
Das Verbindungselement 15 ist als Hülse ausgebildet und axial verschieblich und drehbar im Gehäuse 20 gelagert. Mit einem Ende ragt das Verbindungselement 15 aus dem Gehäuse heraus und weist dort an seiner Innenumfangsfläche ein zweites Innengewinde 16 auf, welches als Linksgewinde ausgebildet ist. Auf dieses zweite Innengewinde ist ein Zugdorn 11 aufgeschraubt. Der Zugdorn 11 weist dazu einen zweiten Gewindeabschnitt 22 auf, der ein zweites Außengewinde 14, welches ebenfalls als Linksgewinde ausgebildet ist.The connecting
Das Verbindungselement 15 ist innerhalb einer Führungshülse 19 geführt, welche fest mit dem Gehäuse 20 verbunden ist. Eine Verdrehsicherung 24 verhindert, dass der Zugdorn 11 gegenüber dem Verbindungselement 15 verdreht werden kann. Somit wird über die Verdrehsicherung 24 der Zugdorn 11 drehfest gegenüber dem Verbindungselement 15 gehalten. Wird nun über den Drehantrieb 18 das Verbindungselement 15 in Drehung versetzt, so wird je nach Drehrichtung auch der Zugdorn 11 in Drehung versetzt. Ist hingegen die Verdrehsicherung 24 gelöst, so ist eine Relativdrehung zwischen dem Verbindungselement 15 und Zugdorn 11 möglich. Der Zugdorn 11 kann beispielsweise mit der Hand festgehalten werden, während der Drehantrieb 18 das Verbindungselement in Drehung versetzt. Je nach Drehrichtung wird dann der Zugdorn 11 auf das Verbindungselement 15 aufgeschraubt oder davon abgeschraubt.The connecting
Die Verdrehsicherung 24 umfasst dabei einen Sicherungsabschnitt 23 des Zugdorns 11, welcher am Außenumfang einer Außensechskantfläche 25 umfasst. Diese Außensechskantfläche 25 ist aufgenommen in einer axial verschiebbaren Sicherungshülse 27, die eine Innensechskantfläche 26 aufweist, die komplementär ausgebildet ist zur Außensechskantfläche 25. Gleichermaß ist die Sicherungshülse 27 drehfest aber axial verschiebbar zum Verbindungselement 15 gehalten.The
In
Der Zugdorn 11 weist ferner einen ersten Gewindeabschnitt 21 auf, welcher ein erstes Außengewinde 12, in diesem Fall ein Rechtsgewinde, umfasst. Dieses wird zur Vorbereitung des Nietsetzvorgangs in ein erstes Innengewinde 2 eines Blindnietelements 1 eingedreht. Das Blindnietelement 1 ist dabei topfförmig ausgebildet und weist einen Anschlagkragen 3 auf. Ein Mundstück 13 an der Führungshülse 19 dient als Anschlag für den Anschlagkragen 3 während des Setzen des Blindnietelements 1.The
Das Nietgerät 10 umfasst ferner eine Steuereinheit 30, die den Längsantrieb 17 und den Drehantrieb 18 ansteuert. Ferner ist ein Drehpositionssensor 29 vorgesehen, mittels dem die Drehposition des Verbindungselements 15 und/oder des Drehantriebs 18 ermittelt werden kann. Der Drehpositionssensor kann auch ein Bestandteil eines Drehantriebs mit bürstenlosem Motor sein.The
Zum Setzen des Blindnietelements wird zunächst das Blindnietelement 1 auf das erste Innengewinde des Zugdorn 11 aufgeschraubt. Dabei wird das Verbindungselement 15 durch den Drehantrieb 18 um einige Umdrehungen verdreht, so dass der mit dem Verbindungselement 15 drehfest verbundene Zugdorn 11 in das Blindnietelement eingeschraubt wird. Anschließend wird ruckartig der Längsantrieb 17 in Gang gesetzt, der das Verbindungselement 15 in das Gehäuse 20 hineinzieht. Das Mundstück 13 verbleibt aber an seiner Position gegenüber dem Gehäuse 20 und schlägt an den Anschlagkragen 3 an. Durch die Druckbelastung des Mundstücks 13 auf den Anschlagkragen 3 bei gleichzeitiger Zugbelastung des sich nach rechts bewegenden Gewindeabschnitts 21 und die damit einhergehende Zugbeaufschlagung des Gewindes 2 wird das Blindnietelement 1 bestimmungsgemäß verformt und damit gesetzt.To set the Blindnietelements the blind rivet 1 is first screwed onto the first internal thread of the
Um dennoch das Nietgerät 10 vom Blindnietelement 1 zu entfernen wird nun ein Notfallprogramm gestartet. Dies erfolgt beispielsweise durch Drücken einer bestimmten Taste oder Tastenkombination durch den Nutzer am Nietgerät 10. Anschließend wird, wie in
Durch eine Aufintegration von Werten, die vom Drehpositionssensor 29 ermittelt werden, wird festgestellt, wie viel Umdrehungen das Verbindungselement 15 bereits durchlaufen hat. Nach einer bestimmten Anzahl von Umdrehungen wird automatisch der Drehantrieb 18 gestoppt. Das ist dann der Fall, wenn das Verbindungselement 15 vollständig vom Zugdorn 11 abgeschraubt ist. Hierbei kann beispielsweise ein Vorgabewert, der die Anzahl der erforderlichen Umdrehungen umfasst, verwendet werden. Dieser Vorgabewert ist zugdornspezifisch, da der Zugdorn 11 beispielsweise fünf Gewindegänge umfasst, welche also die fünfmalige Umdrehung erfordert, um den Zugdorn vom Verbindungselement zu lösen.By integrating values which are determined by the
Dieser Zustand ist nun in
- 11
- BliednietelementBliednietelement
- 22
- erstes Innengewinde (Rechtsgewinde) des Blidnietelementsfirst internal thread (right-hand thread) of Blidnietelements
- 33
- Anschlagkragen des BlidnietelementsStop collar of Blidnietelements
- 44
- Schließwulstlocking bead
- 1010
- Nietgerätriveter
- 1111
- Zugdornmandrel
- 1212
- erstes Außengewinde (Rechtsgewinde) des Zugdornsfirst external thread (right-hand thread) of the mandrel
- 1313
- Mundstückmouthpiece
- 1414
- zweites Außengewinde (Linksgewinde) des Zugdornssecond external thread (left-hand thread) of the mandrel
- 1515
- Verbindungselementconnecting element
- 1616
- zweites Innengewinde (Linksgewinde) des Verbindungselementssecond internal thread (left-hand thread) of the connecting element
- 1717
- Längsantrieblongitudinal drive
- 1818
- Drehantriebrotary drive
- 1919
- Führungshülseguide sleeve
- 2020
- Gehäusecasing
- 2121
- erster Gewindeabschnitt des Zugdornsfirst threaded portion of the mandrel
- 2222
- zweiter Gewindeabschnitt des Zugdornssecond threaded portion of the mandrel
- 2323
- Sicherungsabschnitt des ZugdornsSecuring section of the mandrel
- 2424
- Verdrehsicherungtwist
- 2525
- Außensechskantfläche des SicherungsabschnittsExternal hexagon surface of the securing section
- 2626
- Innensechskantfläche der SicherungshülseHexagon socket surface of the locking sleeve
- 2727
- Sicherungshülsesecuring sleeve
- 2828
- Schraubenschlüsselwrench
- 2929
- DrehpositionssensorRotary position sensor
- 3030
- Steuereinheitcontrol unit
- 3131
- Sensor der VerdrehsicherungSensor of the anti-twist device
- AA
- Drehachseaxis of rotation
Claims (7)
wobei der Zugdorn (11) über eine zweite Gewindeanordnung (14, 16) mit einem Verbindungselement (15) am Nietgerät (10) verbunden ist,
wobei das Nietgerät (10) ein Längsantrieb (17) zum axialen Antreiben des Verbindungselements (15) sowie ein Drehantrieb (18) zum drehbaren Antreiben des Verbindungselements (15) jeweils gegenüber einer Drehachse (A) des Verbindungselements (15) aufweist,
das Verfahren umfasst die folgenden Verfahrensschritte:
wherein the mandrel (11) is connected via a second threaded arrangement (14, 16) to a connecting element (15) on the riveting device (10),
wherein the riveting tool (10) has a longitudinal drive (17) for axially driving the connecting element (15) and a rotary drive (18) for rotatably driving the connecting element (15) in each case opposite an axis of rotation (A) of the connecting element (15),
the method comprises the following method steps:
dadurch gekennzeichnet,
dass der Zugdorn (11) mittels einer Verdrehsicherung (24) zunächst drehfest gegenüber dem Verbindungselement (15) gehalten ist, und dass das Antreiben des Verbindungselements (15) durch den Drehantrieb (18) erst veranlasst wird, wenn die Verdrehsicherung (24) gelöst ist.Method according to the previous claim,
characterized,
that the mandrel (11) by means of a rotation (24) is initially held against rotation with respect to the connecting element (15), and that the driving of the connecting element (15) by the rotary drive (18) is only caused when the rotation (24) is released ,
dadurch gekennzeichnet,
dass der Zustand der Verdrehsicherung (24) durch einen Sensor (31) überwacht wird.Method according to the previous claim,
characterized,
that the state of rotation (24) by a sensor (31) is monitored.
dadurch gekennzeichnet,
dass zumindest zeitweise während dem Antreiben des Verbindungselements (15) durch den Drehantrieb (18) das Verbindungselement (15) anhand des Längsantriebs (17) axial in ein Gehäuse (20) des Nietgeräts eingefahren wird.Method according to one of the preceding claims,
characterized,
that at least temporarily during driving of the connecting element (15) by the rotary drive (18), the connecting element (15) by means of the longitudinal drive (17) is axially retracted into a housing (20) of the riveting device.
dadurch gekennzeichnet,
dass der Drehantrieb (18) und der Längsantrieb (17) derart zueinander synchronisiert sind, dass während dem Antreiben des Verbindungselements (15) durch den Drehantrieb (18) ein axialer Abstand zwischen einem Gehäuse (20) des Nietgeräts (10) und dem Blindnietelement (1) konstant gehalten wird.Method according to the previous claim,
characterized,
in that the rotary drive (18) and the longitudinal drive (17) are synchronized with one another in such a way that during the driving of the connecting element (15) by the rotary drive (18) an axial distance between a housing (20) of the riveting device (10) and the Blindnietelement ( 1) is kept constant.
dadurch gekennzeichnet,
dass das Nietgerät einen Drehpositionsgeber (29) zur Ermittlung der Drehstellung des Drehantriebs (18) umfasst.Method according to one of the preceding claims,
characterized,
that the riveting tool comprising a rotating position detector (29) for determining the rotational position of the rotary drive (18).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015115869.8A DE102015115869B4 (en) | 2015-09-21 | 2015-09-21 | A method of removing a blind rivet element from a riveting tool |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3144105A1 true EP3144105A1 (en) | 2017-03-22 |
EP3144105B1 EP3144105B1 (en) | 2022-08-24 |
Family
ID=56979415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16189638.6A Active EP3144105B1 (en) | 2015-09-21 | 2016-09-20 | Method for removing a blind rivet element from a riveting machine |
Country Status (5)
Country | Link |
---|---|
US (1) | US10220436B2 (en) |
EP (1) | EP3144105B1 (en) |
CN (1) | CN106541066B (en) |
DE (1) | DE102015115869B4 (en) |
ES (1) | ES2929555T3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107838361A (en) * | 2017-11-27 | 2018-03-27 | 平顶山市美伊金属制品有限公司 | A kind of three hole iron head removal devices of iron pan |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0670199A1 (en) * | 1994-03-04 | 1995-09-06 | GESIPA Blindniettechnik Gesellschaft mit beschränkter Haftung | Setting tool for blind rivet nuts |
DE29502918U1 (en) * | 1995-02-21 | 1996-06-20 | VVG Befestigungstechnik Beteiligungs-GmbH, 58730 Fröndenberg | Rivet setting tool for setting blind rivet nuts and screws |
GB2306368A (en) * | 1995-10-31 | 1997-05-07 | Emhart Inc | Rivet setting tool |
DE102013105703A1 (en) | 2013-06-04 | 2014-12-04 | VVG-Befestigungstechnik GmbH & Co. KG | riveter |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201055899Y (en) | 2007-05-25 | 2008-05-07 | 黄鼎钧 | Blind nut lock seaming machine |
CN202105966U (en) | 2011-02-01 | 2012-01-11 | 义国工业股份有限公司 | Electric rivet-drawing machine |
FR3016417B1 (en) | 2014-01-14 | 2016-01-22 | Lisi Aerospace | RIVET FOR BLIND FASTENING, ASSOCIATED TOOL FOR INSTALLATION AND METHOD OF INSTALLING SUCH A RIVET |
-
2015
- 2015-09-21 DE DE102015115869.8A patent/DE102015115869B4/en not_active Expired - Fee Related
-
2016
- 2016-09-19 US US15/268,641 patent/US10220436B2/en active Active
- 2016-09-20 ES ES16189638T patent/ES2929555T3/en active Active
- 2016-09-20 EP EP16189638.6A patent/EP3144105B1/en active Active
- 2016-09-20 CN CN201610837764.5A patent/CN106541066B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0670199A1 (en) * | 1994-03-04 | 1995-09-06 | GESIPA Blindniettechnik Gesellschaft mit beschränkter Haftung | Setting tool for blind rivet nuts |
DE29502918U1 (en) * | 1995-02-21 | 1996-06-20 | VVG Befestigungstechnik Beteiligungs-GmbH, 58730 Fröndenberg | Rivet setting tool for setting blind rivet nuts and screws |
GB2306368A (en) * | 1995-10-31 | 1997-05-07 | Emhart Inc | Rivet setting tool |
DE102013105703A1 (en) | 2013-06-04 | 2014-12-04 | VVG-Befestigungstechnik GmbH & Co. KG | riveter |
Also Published As
Publication number | Publication date |
---|---|
ES2929555T3 (en) | 2022-11-30 |
US20170080480A1 (en) | 2017-03-23 |
US10220436B2 (en) | 2019-03-05 |
DE102015115869B4 (en) | 2019-02-14 |
DE102015115869A1 (en) | 2017-03-23 |
EP3144105B1 (en) | 2022-08-24 |
CN106541066A (en) | 2017-03-29 |
CN106541066B (en) | 2019-07-16 |
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