EP0936029A1 - Method and device for placing rivet nuts - Google Patents

Method and device for placing rivet nuts Download PDF

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Publication number
EP0936029A1
EP0936029A1 EP97122340A EP97122340A EP0936029A1 EP 0936029 A1 EP0936029 A1 EP 0936029A1 EP 97122340 A EP97122340 A EP 97122340A EP 97122340 A EP97122340 A EP 97122340A EP 0936029 A1 EP0936029 A1 EP 0936029A1
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EP
European Patent Office
Prior art keywords
riveting process
tensile force
spring
during
supports
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97122340A
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German (de)
French (fr)
Other versions
EP0936029B1 (en
Inventor
Herbert Schruff
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Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP97121896A external-priority patent/EP0922536B1/en
Application filed by Individual filed Critical Individual
Priority to EP19970122340 priority Critical patent/EP0936029B1/en
Publication of EP0936029A1 publication Critical patent/EP0936029A1/en
Application granted granted Critical
Publication of EP0936029B1 publication Critical patent/EP0936029B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21J15/10—Riveting machines
    • B21J15/105—Portable riveters
    • 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
    • B21J15/20—Drives for riveting machines; Transmission means therefor operated by hydraulic or liquid pressure
    • B21J15/205—Riveting tools having hand operated pumps for building up the hydraulic pressure
    • 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
    • B21J15/386—Pliers for riveting
    • 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

Definitions

  • the invention relates to a method for setting Blind rivet nuts, in which the mandrel up to the stop is screwed into the nut thread in the nut thread and then axially displaced so that the thin-walled material of the cut part dodges outwards and one Bead forms.
  • the invention is therefore based on the object To make available procedures in which lower forces during Setting blind rivet nuts are necessary and therefore the Handling of mechanical devices simplified and the Requirements for hydro-pneumatic devices are reduced.
  • the invention is that one previously stored force during the riveting process Traction supports.
  • the invention also makes a device Implementation of the procedure available, which consists in that a device is provided before the riveting process stores a force and this during the riveting process Provides support for the traction applied.
  • the invention proposes before that the storage device consists of a spring, which can be specially designed as a compression spring.
  • the invention is based on two Embodiments are explained in more detail.
  • Fig. 1 shows a mechanical device consisting of a transverse bearing 1 in which a guide tube 2 is fixed is screwed, which serves to mount the housing 3, so that this is axially displaceable against the transverse bearing 1.
  • a mandrel 4 which by the Guide tube 2 protrudes from the housing 3 and there is connected to the mandrel 10.
  • the mouthpiece 11 is screwed in and over a Knurled nut 12 countered.
  • the cross bearing 1 is with the Housing 3 connected by the lever arms 8 in the transverse bearing 1 be stored with a cross pin 7 and the tabs 6 in Housing 3 with a cross pin 5 and in the lever arm 8 with a cross pin 9 are stored.
  • Fig. 2 is a hydropneumatic Tool represented that in the same way supports the traction to be applied.
  • the Pneumatic cylinder 21 generated by a hydraulic Piston 22 a drive in a hydraulic cylinder 23, the axially moves the mandrel 24 against the mouthpiece 25.
  • a previously compressed spring 26 supports the Movement of the hydraulic piston 22 so that the Driving force by the spring 26 is reduced.
  • the Storage device shown as a spring, which as Coil spring is formed.
  • Force storage devices to support the tractive force such as. B. a motion-dependent switching on of a print medium, which when Pulling back the mandrel is relieved.
  • B. a motion-dependent switching on of a print medium, which when Pulling back the mandrel is relieved.
  • the storage device serves to support the traction through the Storage device of the first phase of the riveting process, at which the greatest force is required to avoid the Wall material of the cut part of the Initiate blind rivet nut. Is this process completed is the additional application of a force no longer required by the storage device, but even harmful at the end of the riveting process therefore to refrain from doing so.
  • the storage device therefore has to find out an appropriate interpretation.

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

Abstract

The threaded pin (10) is screwed into the internal thread as far as the stop on the orifice (11) , and is next axially moved so that the thin-walled material of the cutout part moves outwards to form a ridge. Previously accumulated force supports the tractive force applied during riveting, by means of a compression helical spring.

Description

Die Erfindung betrifft ein Verfahren zum Setzen von Blindnietmuttern, bei dem der Gewindedorn bis zum Anschlag an das Mundstück in das Muttergewinde eingeschraubt wird und dann axial verschoben wird, so daß das dünnwandige Material des freigeschnittenen Teils nach außen ausweicht und eine Wulst bildet.The invention relates to a method for setting Blind rivet nuts, in which the mandrel up to the stop is screwed into the nut thread in the nut thread and then axially displaced so that the thin-walled material of the cut part dodges outwards and one Bead forms.

Bei entsprechenden Geräten zur Durchführung eines solchen Verfahrens ist eine verhältnismäßig große Zugkraft erforderlich, die beispielsweise durch zwei sich aufeinander zu bewegende Handhebel aufgebracht wird. Dabei werden an die Bedienungsperson verhältnismäßig große Anforderungen gestellt. Auch bei hydro-pneumatischen Werkzeugen müssen durch die große aufzubringende Kraft besondere Anforderungen an die Werkzeuge gestellt werden.With appropriate devices to carry out a such a process is a relatively large traction required, for example, by two on top of each other hand lever to be moved is applied. In doing so, the Operator relatively large demands posed. Even with hydro-pneumatic tools special requirements due to the large force to be applied to be placed on the tools.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren verfügbar zu machen, bei dem geringere Kräfte beim Setzen von Blindnietmuttern erforderlich sind und somit die Handhabung mechanischer Geräte vereinfacht und die Anforderungen an hydro-pneumatische Geräte verringert sind.The invention is therefore based on the object To make available procedures in which lower forces during Setting blind rivet nuts are necessary and therefore the Handling of mechanical devices simplified and the Requirements for hydro-pneumatic devices are reduced.

Die Erfindung besteht darin, daß eine zuvor gespeicherte Kraft beim Nietvorgang die aufgebrachte Zugkraft unterstützt.The invention is that one previously stored force during the riveting process Traction supports.

Die Erfindung macht gleichermaßen ein Gerät zur Durchführung des Verfahren verfügbar, das darin besteht, daß eine Einrichtung vorgesehen ist, die vor dem Nietvorgang eine Kraft speichert und diese beim Nietvorgang zur Unterstützung der dabei aufgebrachten Zugkraft abgibt.The invention also makes a device Implementation of the procedure available, which consists in that a device is provided before the riveting process stores a force and this during the riveting process Provides support for the traction applied.

In ihrer weiteren Ausbildung schlägt die Erfindung vor, daß die Speichereinrichtung aus einer Feder besteht, die speziell als Druckfeder ausgebildet sein kann.In its further training, the invention proposes before that the storage device consists of a spring, which can be specially designed as a compression spring.

Weitere vorteilhafte Ausführungsformen und Weiterbilddungen sind in den Unteransprüchen gekennzeichnet.Further advantageous embodiments and Further education is characterized in the subclaims.

Mit dem vorliegenden Verfahren wird somit der erforderliche Gesamtkraftbedarf wesentlich verringert, indem eine Speichereinrichtung sozusagen geladen wird, die dann das Aufbringen der Zugkraft unterstützt. Dadurch ist bei von Hand betätigten Geräten die Zugkraft wesentlich verringert und die Handhabung erleichtert, aber auch bei z. B. pneumatisch-hydraulisch betriebenen Geräten können diese kostengünstiger gestaltet werden, da die insgesamt aufzubringende Zugkraft wesentlich verringert ist.With the present method, the required total power requirement significantly reduced by a storage device is loaded, so to speak, then supports the application of traction. This means that from Hand-operated devices significantly reduce traction and handling easier, but also with z. B. Pneumatically-hydraulically operated devices can do this be made more cost effective since the total tractive force to be applied is significantly reduced.

Die Erfindung soll nachstehend anhand von zwei Ausführungsbeispielen näher erläutert werden.The invention is based on two Embodiments are explained in more detail.

In den Zeichnungen zeigen:

  • Fig. 1 ein Gerät mit zwei aufeinander zu bewegbaren Hebelarmen und
  • Fig. 2 ein hydro-pneumatisches Werkzeug mit einem doppelt wirkenden Zylinder.
    • The drawings show:
  • Fig. 1 shows a device with two mutually movable lever arms and
  • Fig. 2 is a hydro-pneumatic tool with a double-acting cylinder.

    • Fig. 1 zeigt ein mechanisches Gerät, bestehend aus einem Querlager 1, in dem ein Führungsrohr 2 fest verschraubt wird, welches zur Lagerung des Gehäuses 3 dient, so daß dieses gegen das Querlager 1 axial verschiebbar ist.Fig. 1 shows a mechanical device consisting of a transverse bearing 1 in which a guide tube 2 is fixed is screwed, which serves to mount the housing 3, so that this is axially displaceable against the transverse bearing 1.

    Mit dem Querlager 1 axial fest verbunden, jedoch mit freiem radialem Spiel ist ein Dorn 4, der durch das Führungsrohr 2 hindurch aus dem Gehäuse 3 herausragt und dort mit dem Gewindedorn 10 verbunden wird. In das Gehäuse 3 wird das Mundstück 11 eingeschraubt und über eine Rändelmutter 12 gekontert. Das Querlager 1 wird mit dem Gehäuse 3 verbunden, indem die Hebelarme 8 im Querlager 1 mit einem Querstift 7 gelagert werden und die Laschen 6 im Gehäuse 3 mit einem Querstift 5 sowie im Hebelarm 8 mit einem Querstift 9 gelagert werden.With the cross bearing 1 axially fixed, but with free radial play is a mandrel 4, which by the Guide tube 2 protrudes from the housing 3 and there is connected to the mandrel 10. In the housing 3 the mouthpiece 11 is screwed in and over a Knurled nut 12 countered. The cross bearing 1 is with the Housing 3 connected by the lever arms 8 in the transverse bearing 1 be stored with a cross pin 7 and the tabs 6 in Housing 3 with a cross pin 5 and in the lever arm 8 with a cross pin 9 are stored.

    Beim Nietvorgang bewegen sich das Querlager 1 und das Gehäuse 3 voneinander weg. Die dazwischenliegende Feder 13 wurde beim Auseinanderbewegen der Hebelarme 8 in die Position 1 zusammengedrückt und unterstützt nunmehr beim Aufeinanderzubewegen der Hebelarme 8 in die Position 2 die Wegbewegung des Gehäuses 3 von dem Querlager 1 und damit die aufzubringende Zugkraft. In Fig. 2 ist ein hydropneumatisches Werkzeug dargestellt, das in gleicher Weise die aufzubringende Zugkraft unterstützt. Der Pneumatikzylinder 21 erzeugt durch einen hydraulischen Kolben 22 einen Antrieb bei einem Hydraulikzylinder 23, der den Gewindedorn 24 gegen das Mundstück 25 axial verschiebt. Eine zuvor zusammengedrückte Feder 26 unterstützt die Bewegung des hydraulischen Kolbens 22, so daß die Antriebskraft durch die Feder 26 verringert wird.During the riveting process, the transverse bearing 1 and that move Housing 3 away from each other. The intermediate spring 13 was when moving the lever arms 8 in the Position 1 compressed and now supports the Move the lever arms 8 towards each other into position 2 Movement of the housing 3 from the transverse bearing 1 and thus the tractive force to be applied. In Fig. 2 is a hydropneumatic Tool represented that in the same way supports the traction to be applied. Of the Pneumatic cylinder 21 generated by a hydraulic Piston 22 a drive in a hydraulic cylinder 23, the axially moves the mandrel 24 against the mouthpiece 25. A previously compressed spring 26 supports the Movement of the hydraulic piston 22 so that the Driving force by the spring 26 is reduced.

    In den vorliegenden Zeichnungen ist die Speichereinrichtung als Feder dargestellt, die als Schraubenfeder ausgebildet ist. Es sind jedoch auch andere Kraftspeichereinrichtungen zur Unterstützung der aufzubringenden Zugkraft denkbar, wie z. B. ein bewegungsabhängiges Zuschalten eines Druckmediums, das beim Zurückziehen des Gewindedorns entlastet wird. In jedem Fall dient die Unterstützung der Zugkraft durch die Speichereinrichtung der ersten Phase des Nietvorgangs, bei dem die größte Kraft erforderlich ist, um das Ausweichen des Wandmaterials des freigeschnittenen Teils der Blindnietmutter einzuleiten. Ist dieser Vorgang abgeschlossen, ist das zusätzliche Aufbringen einer Kraft durch die Speichereinrichtung nicht mehr erforderlich, sondern gegen Ende des Nietvorgangs sogar schädlich und hat deshalb zu unterbleiben. Die Speichereinrichtung hat deshalb eine entsprechende Auslegung zu erfahren.In the present drawings, the Storage device shown as a spring, which as Coil spring is formed. However, there are others Force storage devices to support the tractive force conceivable, such as. B. a motion-dependent switching on of a print medium, which when Pulling back the mandrel is relieved. In any case serves to support the traction through the Storage device of the first phase of the riveting process, at which the greatest force is required to avoid the Wall material of the cut part of the Initiate blind rivet nut. Is this process completed is the additional application of a force no longer required by the storage device, but even harmful at the end of the riveting process therefore to refrain from doing so. The storage device therefore has to find out an appropriate interpretation.

    Mit den erfindungsgemäßen Maßnahmen ist die Betätigung von Handgeräten wesentlich erleichtert, und Geräte, die mit einer Kraftquelle zur Aufbringung der erforderlichen Zugkraft ausgestattet sind, können weniger aufwendig und damit kostengünstiger hergestellt werden.With the measures according to the invention Operation of handheld devices much easier, and Devices that use a power source to apply the required traction can be less complex and therefore cheaper to manufacture.

    Claims (9)

    Verfahren zum Setzen von Blindnietmuttern, bei dem der Gewindedorn bis zum Anschlag an das Mundstück in das Muttergewinde eingeschraubt wird und anschließend axial verschoben wird, so daß das dünnwandige Material des freigeschnittenen Teils nach außen ausweicht und einen Wulst bildet,
    dadurch gekennzeichnet,
    daß eine zuvor gespeicherte Kraft beim Nietvorgang die aufgebrachte Zugkraft unterstützt.    Method for setting blind rivet nuts, in which the mandrel is screwed into the nut thread as far as the stop against the mouthpiece and is then axially displaced so that the thin-walled material of the cut-out part dodges outwards and forms a bead,
    characterized,
    that a previously stored force supports the applied tensile force during the riveting process.         Gerät zur Durchführung des Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß eine Einrichtung vorgesehen ist, die vor dem Nietvorgang eine Kraft speichert und diese beim Nietvorgang zur Unterstützung der dabei aufgebrachten Zugkraft abgibt.    Apparatus for carrying out the method according to claim 1,
    characterized in that a device is provided which stores a force before the riveting process and emits this during the riveting process to support the tensile force applied in the process.         Gerät nach Anspruch 2,
    dadurch gekennzeichnet, daß die Einrichtung aus einer Feder besteht.    Device according to claim 2,
    characterized in that the device consists of a spring.         Gerät nach Anspruch 3,
    dadurch gekennzeichnet, daß bei mechanischen Werkzeugen die Feder als Druckfeder ausgelegt ist, die beim Öffnen des Werkzeugs einen Teil der für den nächsten Arbeitsgang erforderlichen Kraft speichert.    Device according to claim 3,
    characterized in that in the case of mechanical tools the spring is designed as a compression spring which, when the tool is opened, stores part of the force required for the next operation.         Gerät nach Anspruch 3,
    dadurch gekennzeichnet, daß bei hydro-pneumatischen Werkzeugen die Druckfeder beim Rückhub des Werkzeuges eine Kraft speichert, die beim Nietvorgang die aufgebrachte Zugkraft unterstützt.     Device according to claim 3,
    characterized in that, in the case of hydro-pneumatic tools, the compression spring stores a force during the return stroke of the tool, which supports the tensile force applied during the riveting process.         Gerät nach Anspruch 4 oder 5,
    dadurch gekennzeichnet, daß die Druckfeder als Schraubenfeder ausgebildet ist.    Device according to claim 4 or 5,
    characterized in that the compression spring is designed as a helical spring.         Gerät nach einem der Ansprüche 3 bis 6,
    dadurch gekennzeichnet, daß die Feder in einer ersten Phase des Nietvorgangs die beim Nietvorgang aufgebrachte Zugkraft unterstützt und in einer anschließenden zweiten Phase des Nietvorgangs die aufgebrachte Zugkraft verringert.    Device according to one of claims 3 to 6,
    characterized in that the spring supports the tensile force applied during the riveting process in a first phase of the riveting process and reduces the tensile force applied in a subsequent second phase of the riveting process.         Gerät nach Anspruch 7,
    dadurch gekennzeichnet, daß zur Abnahme der Zugkraft eine mechanische Übersetzung vorgesehen ist.    Device according to claim 7,
    characterized in that a mechanical transmission is provided to decrease the tensile force.         Gerät nach Anspruch 7,
    dadurch gekennzeichnet, daß zur Abnahme der Zugkraft ein Druckminderer vorgesehen ist.    Device according to claim 7,
    characterized in that a pressure reducer is provided to decrease the tensile force.
    EP19970122340 1997-12-12 1997-12-18 Device for placing blind rivet nuts Expired - Lifetime EP0936029B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    EP19970122340 EP0936029B1 (en) 1997-12-12 1997-12-18 Device for placing blind rivet nuts

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    EP97121896 1997-12-12
    EP97121896A EP0922536B1 (en) 1997-12-12 1997-12-12 Device for placing rivet nuts
    EP19970122340 EP0936029B1 (en) 1997-12-12 1997-12-18 Device for placing blind rivet nuts

    Publications (2)

    Publication Number Publication Date
    EP0936029A1 true EP0936029A1 (en) 1999-08-18
    EP0936029B1 EP0936029B1 (en) 2001-03-14

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    ID=26145976

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP19970122340 Expired - Lifetime EP0936029B1 (en) 1997-12-12 1997-12-18 Device for placing blind rivet nuts

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    EP (1) EP0936029B1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1524042A1 (en) * 2002-02-18 2005-04-20 Masterfix Products B.V. Hand-held riveting tool

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2130514A (en) * 1982-11-18 1984-06-06 Spurway Cooke Ind Pty Ltd Blind-rivet setting tool
    DE3306827A1 (en) * 1983-02-26 1984-08-30 Gesipa Blindniettechnik Gmbh, 6000 Frankfurt PNEUMATIC-HYDRAULIC SETTING DEVICE FOR BLIND RIVET NUTS
    EP0454890A1 (en) * 1990-05-04 1991-11-06 VVG Befestigungstechnik Beteiligungs-GmbH Control device for blind rivet setting tools
    DE9408203U1 (en) * 1994-05-18 1994-07-14 Liu Yang Tein Rivet gun

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2130514A (en) * 1982-11-18 1984-06-06 Spurway Cooke Ind Pty Ltd Blind-rivet setting tool
    DE3306827A1 (en) * 1983-02-26 1984-08-30 Gesipa Blindniettechnik Gmbh, 6000 Frankfurt PNEUMATIC-HYDRAULIC SETTING DEVICE FOR BLIND RIVET NUTS
    EP0454890A1 (en) * 1990-05-04 1991-11-06 VVG Befestigungstechnik Beteiligungs-GmbH Control device for blind rivet setting tools
    DE9408203U1 (en) * 1994-05-18 1994-07-14 Liu Yang Tein Rivet gun

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1524042A1 (en) * 2002-02-18 2005-04-20 Masterfix Products B.V. Hand-held riveting tool

    Also Published As

    Publication number Publication date
    EP0936029B1 (en) 2001-03-14

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