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DE4401134C2 - Procedures for monitoring the processing of blind fasteners - Google Patents

Procedures for monitoring the processing of blind fasteners

Info

Publication number
DE4401134C2
DE4401134C2 DE19944401134 DE4401134A DE4401134C2 DE 4401134 C2 DE4401134 C2 DE 4401134C2 DE 19944401134 DE19944401134 DE 19944401134 DE 4401134 A DE4401134 A DE 4401134A DE 4401134 C2 DE4401134 C2 DE 4401134C2
Authority
DE
Germany
Prior art keywords
setting
setting process
processing
blind
monitoring
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 - Fee Related
Application number
DE19944401134
Other languages
German (de)
Other versions
DE4401134A1 (en
Inventor
Klaus Dr Ing Dehlke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INFERT INNOVATIVE FERTIGUNGSTE
Original Assignee
INFERT INNOVATIVE FERTIGUNGSTE
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
Application filed by INFERT INNOVATIVE FERTIGUNGSTE filed Critical INFERT INNOVATIVE FERTIGUNGSTE
Priority to DE19944401134 priority Critical patent/DE4401134C2/en
Publication of DE4401134A1 publication Critical patent/DE4401134A1/en
Application granted granted Critical
Publication of DE4401134C2 publication Critical patent/DE4401134C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00Riveting
    • B21J15/10Riveting machines
    • B21J15/28Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups
    • B21J15/285Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups for controlling the rivet upset cycle
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028Force sensors associated with force applying means
    • G01L5/0033Force sensors associated with force applying means applying a pulling force

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Insertion Pins And Rivets (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Überwachung von Setzprozessen von Blindbefe­ stigern gemäß dem Oberbegriff im Patentanspruch 1.The present invention relates to a method for monitoring the setting processes of blind commands Tiger according to the preamble in claim 1.

Blindnieten gehört zu den mechanischen Verbindungstechniken. Der Fügepartnerzusammenhalt wird durch Umformung des Hilfs­ fügeteils Blindniet bzw. Blindbefestiger erreicht. Das Setzen von Blindbefestigern ist ein Prozeß, der weitgehend unabhängig vom Verarbeitenden abläuft. Setzgerät und Blind­ befestiger sind aufeinander abgestimmt und bilden ein Sy­ stem.Blind rivets are one of the mechanical joining techniques. Joining partner cohesion is achieved by reshaping the auxiliary partially reached blind rivet or blind fastener. The Placing blind fasteners is a process that is largely runs independently of the processor. Setting tool and blind fasteners are coordinated and form a sy stem.

Von Nachteil ist, daß der Verarbeitende den Prozeß nicht kontrollieren kann. Blindbefestiger werden vor allem dort eingesetzt, wo die Verbindungsstelle nur einseitig zugäng­ lich ist. Damit ist die für die Verbinderfunktion notwendige Schließkopfbildung in der Regel keiner Kontrolle zugänglich. Mögliche Fehler können so nicht bzw. nicht rechtzeitig erkannt werden.The disadvantage is that the processor does not process can control. Blind fasteners are mainly there used where the connection point is only accessible from one side is. This is necessary for the connector function Closing head formation generally not accessible to any control. This means that possible errors cannot be made, or not in time be recognized.

Nach EP 04 54 890 A1 ist ein Nietsetzgerät vorgeschlagen worden, bei dem eine Kraftmeßeinrichtung im Zugmechanismus des Gerätes angebracht ist, die sicherstellt, daß das Niet­ setzgerät mit einer vorgegebenen Zugkraft arbeitet und somit den Setzvorgang von Blindnieten oder Blind-Einnietmuttern überwacht und fehlerhafte Setzvorgänge anzeigt, den Ver­ schleiß des Spannmechanismus feststellt und eine notwendige Wartung anzeigt. Der Nachteil dieser Lösung besteht darin, daß der Setzprozeß der Blindbefestiger nicht in die Überwa­ chung mit einbezogen wird. According to EP 04 54 890 A1, a rivet setting tool is proposed been in which a force measuring device in the pull mechanism of the device is attached, which ensures that the rivet setting tool works with a given tensile force and thus the setting process of blind rivets or blind rivet nuts monitors and displays incorrect setting processes, ver wear of the tensioning mechanism and a necessary Indicates maintenance. The disadvantage of this solution is that the setting process of the blind fasteners is not excessive is involved.  

Der Setzprozeß und damit auch die Ausbildung der Verbindung werden von einer Vielzahl von Faktoren beeinflußt. Während der Umformung werden auch die Eigenschaften der Verbindung ausgeprägt. Diesen Umformprozeß gilt es zu überwachen.The setting process and thus the formation of the connection are affected by a variety of factors. While the forming also becomes the properties of the connection pronounced. It is important to monitor this forming process.

Der vorliegenden Erfindung liegt dementsprechend die Aufgabe zugrunde ein Verfahren zu entwickeln, das die Überwachung von Setzprozessen von Blindnieten demgegenüber verbessert.The object of the present invention is accordingly to develop a process that the monitoring of setting processes of blind rivets in contrast, improved.

Diese Aufgabe wurde durch ein gattungsgemäßes Verfahren gelöst, welches die Merkmale des kennzeichnenden Teils des Patentanspruches 1 aufweist.This task was accomplished by a generic method solved, which the characteristics of the characteristic part of claim 1.

Erfindungsgemäß wird dazu die Prozeßgröße Kraft genutzt. Gemessen wird jedoch nicht die aufgebrachte Zugkraft, son­ dern die durch den Blindniet geflossene, umgelenkte, und der Zugkraftrichtung entgegengesetzte Kraftkomponente. In Größe und Verlauf dieser Kraftkomponente widerspiegeln sich im wesentlichen der Ablauf des Umformprozesses. Damit kann über die Überwachung der Setzgerätefunktion in EP 0 454 890 A1 hinausgehend auch der Setzprozeß in die Überwachung mit eingebunden werden. Die ermittelten Meßkurven sind dazu mit Sollkurven zu vergleichen. Ziel ist es zu ermitteln, ob der Umformprozeß in der gewünschten Weise abläuft bzw. abgelaufen ist. Die Sollkurven können in Datenbanken abge­ legt sein bzw. jederzeit Istkurven als Sollkurven vorgegeben werden.According to the invention, the process variable force is used for this. However, the tensile force applied is not measured because the riveted, redirected, and the Direction of opposite force component. In size and the course of this force component are reflected in the essentially the sequence of the forming process. So that can the monitoring of the setting tool function in EP 0 454 890 A1 goes beyond the setting process in the monitoring be involved. The determined measurement curves are included to compare with target curves. The goal is to determine whether the forming process proceeds in the desired manner or has expired. The target curves can be stored in databases sets its or actual curves at any time as target curves will.

Im Gegensatz zu EP 0 454 890 A1 ist bei der erfin­ dungsgemäßen Lösung die Kraftmeßeinrichtung außerhalb des Zugmechanismus angebracht.In contrast to EP 0 454 890 A1, the inventor Invention solution the force measuring device outside of Pull mechanism attached.

Ein weiterer Informationsgewinn kann durch eine zeitgleiche Messung des Setzweges bis zum Dorn- oder Nietnagelabriß bzw. Dorndurchzug erreicht werden. Dazu ist eine Wegmessungsein­ richtung am Setzgerät anzubringen bzw. eine externe Wegmes­ sung vorzunehmen.A further information gain can be achieved by a simultaneous Measurement of the setting path until the mandrel or rivet tears or Mandrel passage can be achieved. For this there is a distance measurement direction on the setting tool or an external measuring tool solution.

Die Erfindung wird am nachfolgenden Ausführungsbeispiel erläutert. Es zeigen:The invention is based on the following embodiment explained. Show it:

Fig. 1 das Meßprinzip und Fig. 1 shows the principle of measurement and

Fig. 2 die Sensoranordnung an einem an sich bekannten pneumatisch-hydraulischen Blindnietsetzgerät. Fig. 2 shows the sensor arrangement on a known pneumatic-hydraulic blind rivet setting device.

Fig. 1 stellt das Meßprinzip der Erfindung dar, nach dem die durch den Blindniet geflossene, umgelenkte und der Zugkraft­ richtung F entgegengesetzte Kraftkomponente gemessen wird. Diese Kraftkomponente ist die für den Umformprozeß erforder­ liche Gegenhaltekraft. Der am Blindnietsetzgerät angebrachte Wegsensor mißt den Weg des Zugmechanismus. Fig. 1 illustrates the measuring principle of the invention, according to which the force component flowed through the blind rivet, deflected and the tensile force direction F is measured. This force component is the counter force required for the forming process. The displacement sensor attached to the blind rivet setting device measures the displacement of the pulling mechanism.

Nach Fig. 2 wird eine Kraftmeßeinrichtung am Setzgerät derart angebracht, daß die für eine am Nietdorn bzw. -nagel anliegend Zugkraft am Setzkopf notwendigerweise auftretende Gegenkraft gemessen werden kann.According to FIG. 2, a force measuring device is attached to the setting tool in such a way that the counterforce which necessarily occurs at the setting head for a tensile force applied to the rivet mandrel or nail can be measured.

Claims (3)

1. Verfahren zur Überwachung der Verarbeitung von Blindbefe­ stigern, bei welchen über den Setzvorgang eine Kraftkomponen­ te gemessen wird, und das gewonnene Meßsignal im Echtzeitbe­ trieb als Soll-Ist-Vergleich zwischen dem Setzprozeßende und dem nächst folgenden Setzprozeß ausgewertet wird, dadurch ge­ kennzeichnet, daß
  • a) außerhalb des Zugmechanismus des Setzgeräts die durch den Blindbefestiger geflossene, umgelenkte und der Zugkraftrich­ tung entgegengesetzte Kraftkomponente gemessen wird, und
  • b) die gewonnenen Meßwerte in dem Soll-Ist-Vergleich mit ei­ ner Idealkurve verglichen werden, oder in einer nicht setz­ prozessprallelen Auswertung mit eindeutiger Zuordnungsmög­ lichkeit des Ergebnisses zum entsprechenden Niet verarbeitet werden.
1. A method for monitoring the processing of blind attachments, in which a force component is measured via the setting process, and the measurement signal obtained in real-time operation is evaluated as a target / actual comparison between the setting process end and the next following setting process, characterized in that that
  • a) outside of the pulling mechanism of the setting tool, the force component flowed through the blind fastener, deflected and opposite to the tensile force direction is measured, and
  • b) the measured values obtained are compared in the target / actual comparison with an ideal curve, or are processed in a non-setting process-parallel evaluation with a clear possibility of assigning the result to the corresponding rivet.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ei­ ne Messung des Hubes des Verarbeitungs-(Setz)gerätes parallel und zeitgleich zur Kraftmessung erfolgt. 2. The method according to claim 1, characterized in that egg ne Measurement of the stroke of the processing (setting) device in parallel and takes place simultaneously with the force measurement.   3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Meßsignalauswertung mittels einer nicht näher darge­ stellten Verarbeitungseinheit er­ folgt.3. The method according to claim 1 or 2, characterized in that the measurement signal evaluation by means of a not Darge created processing unit follows.
DE19944401134 1994-01-17 1994-01-17 Procedures for monitoring the processing of blind fasteners Expired - Fee Related DE4401134C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944401134 DE4401134C2 (en) 1994-01-17 1994-01-17 Procedures for monitoring the processing of blind fasteners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19944401134 DE4401134C2 (en) 1994-01-17 1994-01-17 Procedures for monitoring the processing of blind fasteners

Publications (2)

Publication Number Publication Date
DE4401134A1 DE4401134A1 (en) 1995-07-27
DE4401134C2 true DE4401134C2 (en) 1997-08-28

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Family Applications (1)

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DE (1) DE4401134C2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19846463C2 (en) * 1998-10-08 2002-10-31 Masch Und Werkzeugbau Dorothe Method for controlling a riveting device and such a device
DE20210840U1 (en) * 2002-01-21 2003-05-28 MS Verwaltungs- und Patentgesellschaft mbH., 49084 Osnabrück Setting tool, especially a riveting tool has a piezoelectric sensor for measuring the tensile force applied to the rivet shaft so that the force can be accurately measured without a power supply to the sensor
DE102010015325A1 (en) 2010-04-17 2011-10-20 Bayerische Motoren Werke Aktiengesellschaft Tester for blind rivet setting tool, has pickup portion which provides signal output on reception of counter bearing power of rivet inserted through insertion portion of frame over support element
DE102012012013A1 (en) 2012-06-16 2012-12-13 Daimler Ag Method for determination of strength of RIVTAC connection between metal sheets, involves exerting test forces on end region of joining element and region of component, and increasing forces until joining element is fed from component
DE102012022622A1 (en) 2012-11-20 2014-05-22 Audi Ag Device for performing test on blind rivet, has traction device provided with second receptacle to receive rivet pin and initiate tensile force in rivet pin, where traction device is controlled by interrupting rivet setting process
DE102014206373A1 (en) * 2014-04-03 2015-10-08 Bayerische Motoren Werke Aktiengesellschaft Method for determining the clamping force of a riveted joint

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666710A (en) * 1995-04-20 1997-09-16 Emhart Inc. Blind rivet setting system and method for setting a blind rivet then verifying the correctness of the set
US5661887A (en) * 1995-04-20 1997-09-02 Emhart Inc. Blind rivet set verification system and method
DE69611025T2 (en) * 1995-11-06 2001-03-22 Ford France S.A., Rueil-Malmaison Procedure for monitoring and testing the shear strength of riveted joints
DE19614734A1 (en) * 1996-04-15 1996-10-17 Klaasens Ursula Pressure measuring device for hot tool butt welding machines
EP1302258A1 (en) * 2001-10-11 2003-04-16 Techspace Aero S.A. Real-time monitoring of the quality of a rivet joint
AU2003235721A1 (en) * 2002-01-21 2003-07-30 Ms Geratebau Gmbh Placing tool with means for controlling placing processes
EP1992429A1 (en) 2002-01-21 2008-11-19 MS Gerätebau GmbH Setting tool with means for monitoring setting procedures
WO2003059550A1 (en) * 2002-01-21 2003-07-24 Ms Verwaltungs- Und Patentgesellschaft Mbh Setting tool comprising a device for measuring tensile stress
DE10248298A1 (en) 2002-01-21 2003-07-31 Ms Verwaltungs Und Patentgmbh Rivet placing tool with monitoring of parameters of pulling device acting on rivet bolt gripping device for monitoring riveting process
GB2390832B (en) 2002-07-18 2006-12-13 Emhart Llc Improved blind fastener setting tool
DE10325431A1 (en) * 2003-06-05 2005-01-05 Richard Bergner Verbindungstechnik Gmbh & Co. Kg Connecting arrangement of two components with a blind rivet and method for riveting two components
DE20314362U1 (en) * 2003-09-12 2003-11-27 Avdel Verbindungselemente Gmbh Nietverarbeitungsgerät
DE102006002237B4 (en) * 2006-01-17 2012-09-20 Böllhoff Verbindungstechnik GmbH Method and device for monitoring a joining process for connecting at least two components by means of a setting bolt

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0454890B1 (en) * 1990-05-04 1994-01-26 VVG Befestigungstechnik Beteiligungs-GmbH Control device for blind rivet setting tools

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19846463C2 (en) * 1998-10-08 2002-10-31 Masch Und Werkzeugbau Dorothe Method for controlling a riveting device and such a device
DE20210840U1 (en) * 2002-01-21 2003-05-28 MS Verwaltungs- und Patentgesellschaft mbH., 49084 Osnabrück Setting tool, especially a riveting tool has a piezoelectric sensor for measuring the tensile force applied to the rivet shaft so that the force can be accurately measured without a power supply to the sensor
DE102010015325A1 (en) 2010-04-17 2011-10-20 Bayerische Motoren Werke Aktiengesellschaft Tester for blind rivet setting tool, has pickup portion which provides signal output on reception of counter bearing power of rivet inserted through insertion portion of frame over support element
DE102010015325B4 (en) * 2010-04-17 2012-11-15 Bayerische Motoren Werke Aktiengesellschaft Testing device for a riveting tool
DE102012012013A1 (en) 2012-06-16 2012-12-13 Daimler Ag Method for determination of strength of RIVTAC connection between metal sheets, involves exerting test forces on end region of joining element and region of component, and increasing forces until joining element is fed from component
DE102012022622A1 (en) 2012-11-20 2014-05-22 Audi Ag Device for performing test on blind rivet, has traction device provided with second receptacle to receive rivet pin and initiate tensile force in rivet pin, where traction device is controlled by interrupting rivet setting process
DE102012022622B4 (en) * 2012-11-20 2014-10-30 Audi Ag Device for carrying out setting experiments with blind rivets
DE102014206373A1 (en) * 2014-04-03 2015-10-08 Bayerische Motoren Werke Aktiengesellschaft Method for determining the clamping force of a riveted joint
DE102014206373B4 (en) 2014-04-03 2022-09-08 Bayerische Motoren Werke Aktiengesellschaft Procedure for determining the clamping force of a riveted joint

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Publication number Publication date
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D2 Grant after examination
8363 Opposition against the patent
8339 Ceased/non-payment of the annual fee