EP0989636A2 - Quality assuring process for in a crimping device made crimped connection as well as a crimping tool and crimping device - Google Patents

Quality assuring process for in a crimping device made crimped connection as well as a crimping tool and crimping device Download PDF

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Publication number
EP0989636A2
EP0989636A2 EP99117658A EP99117658A EP0989636A2 EP 0989636 A2 EP0989636 A2 EP 0989636A2 EP 99117658 A EP99117658 A EP 99117658A EP 99117658 A EP99117658 A EP 99117658A EP 0989636 A2 EP0989636 A2 EP 0989636A2
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EP
European Patent Office
Prior art keywords
tool
data
crimping
crimping device
stored
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
EP99117658A
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German (de)
French (fr)
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EP0989636A3 (en
EP0989636B1 (en
Inventor
Lothar Schreiner
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.)
SLE Electronic GmbH
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SLE Electronic GmbH
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Filing date
Publication date
Application filed by SLE Electronic GmbH filed Critical SLE Electronic GmbH
Publication of EP0989636A2 publication Critical patent/EP0989636A2/en
Publication of EP0989636A3 publication Critical patent/EP0989636A3/en
Application granted granted Critical
Publication of EP0989636B1 publication Critical patent/EP0989636B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H01R43/0486—Crimping apparatus or processes with force measuring means
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/712—Electrical terminal crimper
    • 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
    • Y10T29/53022—Means to assemble or disassemble with means to test work or product
    • 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
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53235—Means to fasten by deformation

Definitions

  • the invention relates to a method for quality assurance in a crimping device produced crimp connections according to the preamble of claim 1.
  • the invention further relates to a crimping tool according to the preamble of the claim 3 and a crimping device according to the preamble of claim 6.
  • crimp connection component initially formed in the form of a flat sheet metal part by moving two relatively movable towards each other as stamps trained tool parts molded around the line end and then securely connected in a contacting manner to the line end.
  • wire harnesses in Motor vehicles consist of a variety of different electrical lines that must be provided with plugs or crimp connection components by crimping.
  • the Quality assurance of the crimping processes takes place, for example, in that during the Crimping the force-displacement characteristic of the tool parts is recorded and immediately with a target force-displacement characteristic curve which is stored in the crimping device, is compared or that measurement data is calculated from the measured force-displacement characteristic be compared with the stored target data.
  • the solidates or the The target force-displacement characteristic curve is determined when the tool is started up.
  • the invention has for its object to provide a generic method to further develop that when operating the crimping device with different tools a perfect quality of the crimp connections despite short tool changing times is achieved.
  • the invention is further based on the object of a generic To create crimping tool for performing the aforementioned method. Further lies the invention has for its object a crimping device for using a to create such a tool.
  • the part of the object of the invention relating to the method is characterized by the features of Main claim solved.
  • the method according to the invention is advantageous with the features of claim 2 Way further educated.
  • the claim 3 is directed to the crimping tool with which the corresponding part of the Invention problem is solved.
  • the crimping tool of claim 3 is combined with those of claims 4 and 5 in advantageously trained.
  • the claim 6 characterizes a crimping device for use with a crimping tool according to the invention.
  • the crimping device according to claim 6 has the features of claims 7 and 8 further developed in an advantageous manner.
  • FIGS. 1 and 2 are largely those at the beginning mentioned DE 4 038 658 A1, whose content as an example of a crimping device and a crimping process is made to the content of the following application.
  • the crimping device designated as a whole by 2, is formed by a crimping press in which a stamp which can be moved up and down by means of a drive (not shown in detail) ends in an adapter 4.
  • the adapter 4 protrudes into a tool receiving space 6, which has a plate 8 at the bottom, which is supported on a foot 12 of the crimping device 2 via a load cell (only the line 10 that leads to the load cell is shown).
  • an operating panel 14 is provided, which forms an interface to a data processing device 15 with microprocessor, data memory, program memory etc. contained in the crimping device.
  • a tool which is denoted overall by 14 in FIG. 2, can be inserted into the tool receiving space 6 of the crimping device 2.
  • This tool contains a connection component 16 that can be connected to the adapter 4, which is rigidly connected to a tool part 18 designed as an upper punch and can be moved up and down together with the latter within a frame 20.
  • a further tool part 24 Arranged opposite the tool part 18 is a further tool part 24 designed as a lower punch in a base body 22.
  • a loading device 28 is used, which moves a belt 30 with the crimp connection components 26 step by step forward by means of a movably driven lever 32.
  • a cable end (not shown) with stripped conductor wires is arranged between the tool parts 18 and 24 and is firmly connected to the crimp connection component 26 by crimping.
  • the force shown in dashed lines in FIG. 3 results -Way characteristic.
  • This force-displacement characteristic first goes through a preparation phase I within which the upper tool part 18 comes into firm contact with the crimp connection component 26 and the cable end, and then runs through the actual crimping phase II.
  • the curve is specific to a type of crimp connection component and cable and the tool.
  • the actual measurement evaluation takes place to suppress disturbances above a threshold force K S.
  • the dotted curve S indicates a target curve which represents a perfect crimp.
  • the curve S itself or the area F integrated under the curve S, which is a measure of the crimping work performed, can be used as target values for recognizing a perfect crimping.
  • the data representing the curve S and / or the area F are stored as solidates by the data processing device in the crimping device 2.
  • FIG. 4 shows a cross section through a cable provided with a crimp connection component, cut in the area of the stripped wires. As can be seen, the crimp connection component 26 is bent overall in the form of a sleeve and clamps the wires 32 of the cable in a form-fitting manner in its interior for reliable contacting.
  • the tool 14 is provided with a data carrier 36 which is attached to the frame 20 in the example shown.
  • the task and function of this data carrier 36 is as follows: When the tool 14 is used for the first time in the crimping device 2, the solidates are determined and stored by the data processing device 15 in the crimping device 2, for example on the basis of the target curve S and / or the integral F, so that they are available as target values for future crimping processes.
  • a crimp connection is checked for mechanical strength, electrical resistance and optical quality, and the measurement data of the crimp connection, which has been tested as perfect, are stored as target data in the data processing of the crimping device.
  • the desired data of the tool 14 are read out from the memory of the data processing device 15 of the crimping device 2 and read into the data carrier 36. In this way, the tool 14 itself carries its specific solidates. Furthermore, when the tool 14 is removed, the number of crimp connections made with it can be read into its data carrier 36.
  • FIG. 5 shows a data carrier 36 inserted into a recess 38 of the frame 20, which has a base plate 40 fastened to the bottom of the recess, on which the actual data carrier is attached. In this way, the data carrier 36 is attached to the frame 20 in a protected manner.
  • the data carrier 36 can be a simple read / write memory which has a mechanically contactable or contactless read-in and read-out interface with which data can be read in and read out by means of a hand-held device.
  • the data carrier 36 can contain a complete microprocessor with program memory, data memory and input and output device, for example with an antenna and transponder.
  • the data processing device 15 of the crimping device 2 accordingly has an input and output unit with which the data can be transmitted, for example by means of a hand-held device.
  • the crimping device 2 in the area of the tool receiving space 6 has an interface 46 that works with contacting or without contact, which is arranged opposite a corresponding interface formed on the tool 14 according to FIG. 3 on the back of the frame 20. Data is automatically exchanged via the interfaces when a tool 14 is inserted or put into operation and when the tool 14 is removed or decommissioned. It is understood that in this case the entire data carrier 36 is advantageously arranged on the rear of the frame 20. It goes without saying that a wide variety of transmission techniques (with contacts, contactless with ultrasound, infrared, via antenna with transmitter, etc.) can be used.
  • the invention creates a possibility of monitoring the quality of crimp connections made with a wide variety of tools without loss of time and extremely reliably, the condition of the tools themselves being able to be recorded in a predictable manner.
  • the tool-specific target data stored on the tool itself relate not only to the tool itself, but preferably also to the crimp connection component and the cable for which the tool is to be used. They do not or only weakly depend on the respective crimping device and, if necessary, can contain a corresponding additional parameter.
  • the invention can be used wherever several tools with tool-specific data, which are used for quality monitoring or for controlling a device working with the tool, are used alternately in one or more devices.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

The method involves measuring the force-displacement characteristic whilst fixing a crimp connector part (26) between two mutually relatively movable tool parts (18,24) when moving the tool parts together onto a cable end. The measured data are compared with stored desired data. The tool has a data medium (36) for tool-specific desired data for comparison with the measured data. Independent claims are also included for a crimping tool and a crimping arrangement.

Description

Die Erfindung betrifft ein Verfahren zur Qualitätssicherung von in einer Crimpvorrichtung hergestellten Crimpverbindungen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for quality assurance in a crimping device produced crimp connections according to the preamble of claim 1.

Die Erfindung betrifft weiter ein Crimpwerkzeug gemäß dem Oberbegriff des Anspruchs 3 und eine Crimpvorrichtung gemäß dem Oberbegriff des Anspruchs 6.The invention further relates to a crimping tool according to the preamble of the claim 3 and a crimping device according to the preamble of claim 6.

Eine nach dem gattungsgemäßen Verfahren und mit einem gattungsgemäßen Crimpwerkzeug arbeitende Crimpvorrichtung ist aus der DE 4 038 658 A1 bekannt.One according to the generic method and with one generic Crimping tool working crimping device is known from DE 4 038 658 A1.

Für das Anbringen von Steckern an elektrischen Leitungen mit mehreren Leitungsadern und einer isolierenden Ummantelung ist das sogenannte Crimpen weit verbreitet. Dabei wird ein zunächst in Form eines flachen Blechteils ausgebildetes Crimpanschlußbauteil durch Aufeinanderzubewegen zweier relativ zueinander beweglicher, als Stempel ausgebildeter Werkzeugteile um das Leitungsende herum geformt und dann sicher kontaktierend mit dem Leitungsende verbunden. Insbesondere Kabelbäume in Kraftfahrzeugen bestehen aus einer Vielzahl unterschiedlichster elektrischer Leitungen, die durch Crimpen mit Steckern bzw. Crimpanschlußbauteilen versehen werden müssen. Die Qualitätssicherung der Crimpvorgänge erfolgt beispielsweise dadurch, daß während des Crimpens die Kraft-Weg-Kennlinie der Werkzeugteile aufgenommen wird und unmittelbar mit einer Soll-Kraft-Weg-Kennlinie, die in der Crimpvorrichtung gespeichert ist, verglichen wird oder daß aus der gemessenen Kraft-Weg-Kennlinie Meßdaten berechnet werden, die mit den gespeicherten Solldaten verglichen werden. Die Solidaten bzw. die Soll-Kraft-Weg-Kennlinie werden bei der Inbetriebnahme des Werkzeugs ermittelt.For attaching plugs to electrical cables with multiple cable cores and an insulating jacket, so-called crimping is widespread. Here is a crimp connection component initially formed in the form of a flat sheet metal part by moving two relatively movable towards each other as stamps trained tool parts molded around the line end and then securely connected in a contacting manner to the line end. In particular, wire harnesses in Motor vehicles consist of a variety of different electrical lines that must be provided with plugs or crimp connection components by crimping. The Quality assurance of the crimping processes takes place, for example, in that during the Crimping the force-displacement characteristic of the tool parts is recorded and immediately with a target force-displacement characteristic curve which is stored in the crimping device, is compared or that measurement data is calculated from the measured force-displacement characteristic be compared with the stored target data. The solidates or the The target force-displacement characteristic curve is determined when the tool is started up.

In der Praxis stellt sich das Problem, daß es eine große Vielzahl sowohl verschiedener Kabel als auch verschiedener Crimpanschlußbauteile gibt, die jeweils den Einsatz unterschiedlicher Werkzeuge erfordern. Diese Werkzeuge können in einer gemeinsamen Crimpvorrichtung verwendet werden und werden jeweils ausgewechselt. Es ist einerseits zeitaufwendig und andererseits teuer, nach jedem Werkzeugwechsel die Solidaten, die eine einwandfreie Crimpung signalisieren, zu ermitteln und zu speichern.In practice, the problem arises that there is a large variety of both different Cables as well as various crimp connection components exist, each of which is used different tools. These tools can be shared Crimping device are used and are replaced in each case. It is on the one hand time-consuming and, on the other hand, expensive, the solidates, the one after each tool change Signal, determine and save perfect crimping.

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Verfahren dahingehend weiterzubilden, daß bei Betrieb der Crimpvorrichtung mit unterschiedlichen Werkzeugen trotz kurzer Werkzeugwechselzeiten eine einwandfreie Qualität der Crimpverbindungen erzielt wird. Der Erfindung liegt weiter die Aufgabe zugrunde, ein gattungsgemäßes Crimpwerkzeug zur Durchführung des vorgenannten Verfahrens zu schaffen. Weiter liegt der Erfindung die Aufgabe zugrunde, eine Crimpvorrichtung zur Verwendung eines solchen Werkzeugs zu schaffen.The invention has for its object to provide a generic method to further develop that when operating the crimping device with different tools a perfect quality of the crimp connections despite short tool changing times is achieved. The invention is further based on the object of a generic To create crimping tool for performing the aforementioned method. Further lies the invention has for its object a crimping device for using a to create such a tool.

Der das Verfahren betreffende Teil der Erfindungsaufgabe wird mit den Merkmalen des Hauptanspruchs gelöst.The part of the object of the invention relating to the method is characterized by the features of Main claim solved.

Dadurch, daß das Werkzeug mit einem Datenträger versehen wird, der werkzeugspezifische Solldaten trägt und diese Solidaten dann unmittelbar mit den jeweiligen Messdaten verglichen werden, ist nach einem Werkzeugwechsel keine versuchstechnisch aufwendige Ermittlung der Solldaten erforderlich.The fact that the tool is provided with a data carrier, the tool-specific Carries target data and these solidates then directly with the respective Comparing measurement data after a tool change is not experimental elaborate determination of the target data required.

Das erfindungsgemäße Verfahren wird mit den Merkmalen des Anspruchs 2 in vorteilhafter Weise weiter gebildet.The method according to the invention is advantageous with the features of claim 2 Way further educated.

Der Anspruch 3 ist auf das Crimpwerkzeug gerichtet, mit dem der entsprechende Teil der Erfindungsaufgabe gelöst wird.The claim 3 is directed to the crimping tool with which the corresponding part of the Invention problem is solved.

Das Crimpwerkzeug des Anspruchs 3 wird mit denen der Ansprüche 4 und 5 in vorteilhafter Weise weitergebildet.The crimping tool of claim 3 is combined with those of claims 4 and 5 in advantageously trained.

Der Anspruch 6 kennzeichnet eine Crimpvorrichtung zur Verwendung mit einem erfindungsgemäßen Crimpwerkzeug.The claim 6 characterizes a crimping device for use with a crimping tool according to the invention.

Die Crimpvorrichtung gemäß dem Anspruch 6 wird mit den Merkmalen der Ansprüche 7 und 8 in vorteilhafter Weise weiter gebildet.The crimping device according to claim 6 has the features of claims 7 and 8 further developed in an advantageous manner.

Die Erfindung wird im folgenden anhand schematischer Zeichnungen beispielsweise und mit weiteren Einzelheiten erläutert.
Es stellen dar:

Figur 1
in perspektivischer Darstellung eine Crimpvorrichtung mit ausgebautem Werkzeug,
Figur 2
ein Werkzeug zum Einsatz in der Crimpvorrichtung gemäß Figur 1,
Figur 3
eine Kraft-Weg-Kennlinie, wie sie sich beim Zusammenpressen der relativ zueinander beweglichen Werkzeugteile zur Herstellung einer Crimpvorrichtung ergibt,
Figur 4
einen Querschnitt durch eine Crimpverbindung und
Figur 5
eine perspektivische Ansicht eines Datenträgers.
The invention is explained below with reference to schematic drawings, for example and with further details.
They represent:
Figure 1
a perspective view of a crimping device with the tool removed,
Figure 2
1 a tool for use in the crimping device according to FIG. 1,
Figure 3
a force-displacement characteristic curve, such as is obtained when the tool parts movable relative to one another are pressed together to produce a crimping device,
Figure 4
a cross section through a crimp connection and
Figure 5
a perspective view of a disk.

In der vorliegenden Beschreibung sind die Figuren 1 und 2 weitgehend der eingangs genannten DE 4 038 658 A1 entnommen, deren Inhalt als Beispiel für eine Crimpvorrichtung und ein Crimpverfahren zum Inhalt der folgenden Anmeldung gemacht wird.In the present description, FIGS. 1 and 2 are largely those at the beginning mentioned DE 4 038 658 A1, whose content as an example of a crimping device and a crimping process is made to the content of the following application.

Die insgesamt mit 2 bezeichnete Crimpvorrichtung ist durch eine Crimppresse gebildet, bei der ein mittels eines nicht im einzelnen dargestellten Antriebs aufwärts und abwärts bewegbarer Stempel in einem Adapter 4 endet. Der Adapter 4 ragt in einen Werkzeugaufnahmeraum 6 ein, der unten eine Platte 8 aufweist, die sich über eine Kraftmessdose (nur die Leitung 10, die zur Kraftmessdose führt ist dargestellt) an einem Fuß 12 der Crimpvorrichtung 2 abstützt.
Zur Bedienung der Crimpvorrichtung ist ein Bedienfeld 14 vorgesehen, das ein Interface zu einer in der Crimpvorrichtung enthaltenen Datenverarbeitungseinrichtung 15 mit Mikroprozessor, Datenspeicher, Programmspeicher usw. bildet. The crimping device, designated as a whole by 2, is formed by a crimping press in which a stamp which can be moved up and down by means of a drive (not shown in detail) ends in an adapter 4. The adapter 4 protrudes into a tool receiving space 6, which has a plate 8 at the bottom, which is supported on a foot 12 of the crimping device 2 via a load cell (only the line 10 that leads to the load cell is shown).
To operate the crimping device, an operating panel 14 is provided, which forms an interface to a data processing device 15 with microprocessor, data memory, program memory etc. contained in the crimping device.

In den Werkzeugaufnahmeraum 6 der Crimpvorrichtung 2 ist ein in Figur 2 insgesamt mit 14 bezeichnetes Werkzeug einsetzbar.
Dieses Werkzeug enthält ein an den Adapter 4 anschließbares Anschlußbauteil 16, das Starr mit einem als Oberstempel ausgebildeten Werkzeugteil 18 verbunden ist und zusammen mit diesem innerhalb eines Gestells 20 auf- und abwärts bewegbar ist.
Dem Werkzeugteil 18 gegenüberliegend angeordnet ist in einem Grundkörper 22 ein weiteres als Unterstempel ausgebildetes Werkzeugteil 24.
Zur Beschickung des Werkzeugs mit zunächst als flache Bleche ausgebildeten Crimpanschlußbauteilen 20 dient eine Beschickungseinrichtung 28, die ein Band 30 mit den Crimpanschlußbauteilen 26 mittels eines beweglich angetriebenen Hebels 32 schrittweise vorwärts bewegt. Wenn auf dem unteren Werkzeugteil 24 ein Crimpanschlußbauteil 26 angeordnet ist, wird zwischen den Werkzeugteilen 18 und 24 ein nicht dargestelltes Kabelende mit abisolierten Leiteradern angeordnet und durch Crimpen fest mit dem Crimpanschlußbauteil 26 verbunden.
Während eines Crimpvorgangs ergibt sich durch Messung der auf das Werkzeug vom Adapter 4 aufgebrachten Kraft K mittels der über die Leitung 10 angeschlossenen Kraftmessdose und des Weges, den der Adapter 4 zurücklegt (ein entsprechender Wegsensor ist nicht dargestellt), die in Figur 3 gestrichelt dargestellte Kraft-Weg-Kennlinie. Diese Kraft-Weg-Kennlinie durchläuft zunächst eine Vorbereitungsphase I innerhalb der das obere Werkzeugteil 18 in feste Anlage an das Crimpanschlußbauteil 26 und das Kabelende kommt, und durchläuft dann die eigentliche Vercrimpungsphase II. Der Kurvenverlauf ist spezifisch für jeweils eine Art von Crimpanschlußbauteilen und Kabeln und das Werkzeug. Die eigentliche Messauswertung erfolgt zur Unterdrückung von Störungen oberhalb einer Schwellkraft KS.
Die gepunktete Kurve S gibt eine Sollkurve an, die eine einwandfreie Crimpung darstellt. Als Sollgrößen zum Erkennen einer einwandfreien Crimpung kann die Kurve S selbst genommen werden oder die unter der Kurve S integrierte Fläche F, die ein Maß für die geleistete Crimparbeit ist. Die die Kurve S und/oder die Fläche F wiedergebenden Daten werden von der in der Crimpvorrichtung 2 vorhandenen Datenverarbeitungseinrichtung als Solidaten gespeichert. A tool, which is denoted overall by 14 in FIG. 2, can be inserted into the tool receiving space 6 of the crimping device 2.
This tool contains a connection component 16 that can be connected to the adapter 4, which is rigidly connected to a tool part 18 designed as an upper punch and can be moved up and down together with the latter within a frame 20.
Arranged opposite the tool part 18 is a further tool part 24 designed as a lower punch in a base body 22.
For loading the tool with crimp connection components 20 initially designed as flat sheets, a loading device 28 is used, which moves a belt 30 with the crimp connection components 26 step by step forward by means of a movably driven lever 32. If a crimp connection component 26 is arranged on the lower tool part 24, a cable end (not shown) with stripped conductor wires is arranged between the tool parts 18 and 24 and is firmly connected to the crimp connection component 26 by crimping.
During a crimping process, by measuring the force K applied to the tool by the adapter 4 by means of the load cell connected via the line 10 and the path that the adapter 4 travels (a corresponding displacement sensor is not shown), the force shown in dashed lines in FIG. 3 results -Way characteristic. This force-displacement characteristic first goes through a preparation phase I within which the upper tool part 18 comes into firm contact with the crimp connection component 26 and the cable end, and then runs through the actual crimping phase II. The curve is specific to a type of crimp connection component and cable and the tool. The actual measurement evaluation takes place to suppress disturbances above a threshold force K S.
The dotted curve S indicates a target curve which represents a perfect crimp. The curve S itself or the area F integrated under the curve S, which is a measure of the crimping work performed, can be used as target values for recognizing a perfect crimping. The data representing the curve S and / or the area F are stored as solidates by the data processing device in the crimping device 2.

Bei einem Crimpvorgang werden die Istdaten erfaßt und mit den Solldaten verglichen. Bei einer Abweichung der Kraft-Weg-Kennlinie von der Solllinie nach unten (SI) oder nach oben (SII) erfolgt eine Fehleranzeige. Für das Erkennen einer fehlerhaften Crimpung können auch weitere Kriterien herangezogen werden, wie eine zu große Abweichung eines einzelnen Meßpunktes, zusätzliche Messungen von Zeitdauern u.s.w..
Figur 4 zeigt einen Querschnitt durch ein mit einem Crimpanschlußbauteil versehenes Kabel, geschnitten im Bereich der abisolierten Adern. Ersichtlich ist das Crimpanschlußbauteil 26 insgesamt hülsenförmig verbogen und klemmt die Adern 32 des Kabels für eine sichere Kontaktierung formschlüssig in seinem Inneren ein.During a crimping process, the actual data are recorded and compared with the target data. If the force-displacement characteristic deviates from the target line downwards (S I ) or upwards (S II ), an error is displayed. Additional criteria can also be used to identify faulty crimping, such as an excessive deviation of a single measuring point, additional measurements of time periods, etc.
FIG. 4 shows a cross section through a cable provided with a crimp connection component, cut in the area of the stripped wires. As can be seen, the crimp connection component 26 is bent overall in the form of a sleeve and clamps the wires 32 of the cable in a form-fitting manner in its interior for reliable contacting.

Die bisher beschriebene Vorrichtung und das bisher beschriebene Verfahren sind aus der DE 4 038 658 A1 bekannt und wurden daher nur pauschal beschrieben.
Wie erläutert müssen für unterschiedliche Crimpverbindungen unterschiedliche Werkzeuge 14 in der Crimpvorrichtung 2 verwendet werden. Erfingungsgemäß ist das Werkzeug 14 mit einem Datenträger 36 versehen, der im dargestelltem Beispiel an dem Gestell 20 angebracht ist. Die Aufgabe und Funktion dieses Datenträgers 36 ist folgende:
Wenn das Werkzeug 14 erstmalig in der Crimpvorrichtung 2 eingesetzt wird, werden von der in der Crimpvorrichtung 2 vorhandenen Datenverarbeitungseinrichtung 15 die Solidaten beispielsweise anhand der Sollkurve S und/oder des Integrals F ermittelt und gespeichert, sodaß sie als Sollwerte für zukünftige Crimpvorgänge zur Verfügung stehen. Dazu wird beispielsweise eine Crimpverbindung auf mechanische Festigkeit, elektrischen Widerstand und optische Qualität geprüft und die Meßdaten der als einwandfrei geprüften Crimpverbindung als Solldaten in der Datenverarbeitungs der Crimpvorrichtung gespeichert. Bevor das Werkzeug 14 aus der Crimpvorrichtung 2 entfernt wird, um durch ein anderes Werkzeug ersetzt zu werden, werden die Solldaten des Werkzeugs 14 aus dem Speicher der Datenverarbeitungseinrichtung 15 der Crimpvorrichtung 2 ausgelesen und in den Datenträger 36 eingelesen. Auf diese Weise trägt das Werkzeug 14 selbst seine spezifischen Solidaten. Des weiteren kann bei der Entnahme des Werkzeugs 14 die Anzahl der mit ihm hergestellten Crimpverbindungen in seinen Datenträger 36 eingelesen werden. Wird das Werkzeug 14 nun erneut in Betrieb genommen, so können seine Solldaten vom Datenträger 36 ausgelesen und in den Speicher der Datenverarbeitungseinrichtung 15 der Crimpvorrichtung 2 eingelesen werden, so daß die Solidaten sofort zur Verfügung stehen. Es wird nun mit üblicher Geschwindigkeit ein erster Crimpvorgang ausgeführt, wobei sofort festgestellt werden kann, ob dieser Crimpvorgang in Ordnung ist oder nicht.
Für die Ausbildung des Datenträgers 36 und für die Datenübertragung vom Datenträger 36 in die Datenverarbeitungseinrichtung 15 der Crimpvorrichtung 2 gibt es die unterschiedlichsten Ausführungsformen.
Figur 5 zeigt einen in eine Ausnehmung 38 des Gestells 20 eingesetzen Datenträger 36, der eine am Boden der Ausnehmung befestigte Grundplatte 40 aufweist, auf der der eigentliche Datenträger angebracht ist. Auf diese Weise ist der Datenträger 36 geschützt an dem Gestell 20 angebracht.
Der Datenträger 36 kann ein einfacher Schreib-/Lesespeicher sein, der über ein mechanisch kontaktierbares oder berührungsloses ein-und auslesbares Interface verfügt, mit dem Daten mittels eines Handgerätes ein- und auslesbar sind. Bei aufwendiger Ausführung kann der Datenträger 36 einen vollständigen Mikroprozessor mit Programmspeicher, Datenspeicher und Ein- und Ausgabevorrichtung, beispielsweise mit Antenne und Transponder, enthalten.
Die Datenverarbeitungseinrichtung 15 der Crimpvorrichtung 2 weist entsprechend eine Ein- und Ausgabeeinheit auf, mit der die Daten beispielsweise mittels eines Handgerätes übertragbar sind. In komfortablerer und betriebssicherer Ausführung weist die Crimpvorrichtung 2 im Bereich des Werkzeugaufnahmeraums 6 eine mit Kontaktierung oder berühungslos arbeitende Schnittstelle 46 auf, die einer entsprechenden am Werkzeug 14 gemäß Figur 3 auf der Rückseite des Gestells 20 ausgebildeten Schnittstelle gegenüberliegend angeordnet ist. Über die Schnittstellen erfolgt automatisch ein Datenaustauch beim Einsetzen bzw. der Inbetriebnahme eines Werkzeugs 14 und beim Herausnehmen bzw. der Außerbetriebnahme des Werkzeugs 14. Es versteht sich, daß in diesem Fall vorteilhafterweise der gesamte Datenträger 36 an der Rückseite des Gestells 20 angeordnet ist. Es versteht sich weiter, daß unterschiedlichste Übertragungstechniken (mit Kontakten, kontaktlos mit Ultraschall, Infrarot, über Antenne mit Sender usw.) angewendet werden können. Bei über Funk erfolgenden Übertragungen bestehen bezüglich der räumlichen Anordnung des Datenträges und der Ein- und Ausgabeeinrichtung der Datenübertragungseinrichtung der Crimpvorrichtung 2 kaum räumliche Beschränkungen. In den Datenträger 36 des Werkzeugs 14 können bei einer Außerbetriebnahme des Werkzeugs 14 Solidaten eingelesen werden, die beispielsweise dem Mittelwert einer bestimmten Anzahl von Messdaten entsprechen. Das Werkzeug kann in einer zentralen Werkzeugverwaltung dann anhand dieser Daten und im Vergleich mit den ursprünglichen Solidaten sowie gegebenenfalls der Anzahl der insgesamt mit dem Werkzeug hergestellten Crimpverbindungen auf weitere Funktionstauglichkeit und Lebensdauer überprüft werden.
Es versteht sich, daß die Erfindung für unterschiedlichste Crimpvorrichtungen bzw. Crimppressen und Werkzeuge einsetzbar ist. Beispielsweise kann der Umfang eines Werkzeugs erheblich kleiner als der der Figur 2 sein. In speziellen Ausführungen beispielsweise können nur die Werkzeugteile 18 und 24 ausgewechselt werden. Dann trägt eines dieser Werkzeugteile den Datenträger.
Insgesamt ist mit der Erfindung eine Möglichkeit geschaffen, ohne Zeitverluste und außerordentlich sicher die Qualität von mit unterschiedlichsten Werkzeugen hergestellten Crimpverbindungen zu überwachen, wobei auch der Zustand der Werkzeuge selbst prognostizierbar erfaßt werden kann. Die werkzeugspezifischen an dem Werkzeug selbst gespeicherten Solldaten beziehen sich nicht nur auf das Werkzeug selbst, sondern vorzugsweise auch auf das Crimpanschlußbauteil und das Kabel, für das das Werkzeug verwendet werden soll. Sie hängen nicht oder nur schwach von der jeweiligen Crimpvorrichtung ab und können erforderlichenfalls einen entsprechenden, zusätzlichen Parameter enthalten. Die Erfindung ist überall dort anwendbar, wo mehrere Werkzeuge mit werkzeugspezifischen Daten, die zur Qualitätsüberwachung oder zur Steuerung einer mit dem Werkzeug arbeitenden Vorrichtung dienen, in einer oder mehreren Vorrichtungen abwechselnd eingesetzt werden.The device and the method described so far are known from DE 4 038 658 A1 and have therefore only been described in general terms.
As explained, different tools 14 must be used in the crimping device 2 for different crimp connections. According to the invention, the tool 14 is provided with a data carrier 36 which is attached to the frame 20 in the example shown. The task and function of this data carrier 36 is as follows:
When the tool 14 is used for the first time in the crimping device 2, the solidates are determined and stored by the data processing device 15 in the crimping device 2, for example on the basis of the target curve S and / or the integral F, so that they are available as target values for future crimping processes. For this purpose, for example, a crimp connection is checked for mechanical strength, electrical resistance and optical quality, and the measurement data of the crimp connection, which has been tested as perfect, are stored as target data in the data processing of the crimping device. Before the tool 14 is removed from the crimping device 2 in order to be replaced by another tool, the desired data of the tool 14 are read out from the memory of the data processing device 15 of the crimping device 2 and read into the data carrier 36. In this way, the tool 14 itself carries its specific solidates. Furthermore, when the tool 14 is removed, the number of crimp connections made with it can be read into its data carrier 36. If the tool 14 is now put into operation again, its target data can be read out from the data carrier 36 and read into the memory of the data processing device 15 of the crimping device 2, so that the solidates are immediately available. A first crimping process is now carried out at the usual speed, it being possible to immediately determine whether this crimping process is OK or not.
There are many different embodiments for the formation of the data carrier 36 and for the data transmission from the data carrier 36 into the data processing device 15 of the crimping device 2.
FIG. 5 shows a data carrier 36 inserted into a recess 38 of the frame 20, which has a base plate 40 fastened to the bottom of the recess, on which the actual data carrier is attached. In this way, the data carrier 36 is attached to the frame 20 in a protected manner.
The data carrier 36 can be a simple read / write memory which has a mechanically contactable or contactless read-in and read-out interface with which data can be read in and read out by means of a hand-held device. In the case of a complex design, the data carrier 36 can contain a complete microprocessor with program memory, data memory and input and output device, for example with an antenna and transponder.
The data processing device 15 of the crimping device 2 accordingly has an input and output unit with which the data can be transmitted, for example by means of a hand-held device. In a more convenient and reliable design, the crimping device 2 in the area of the tool receiving space 6 has an interface 46 that works with contacting or without contact, which is arranged opposite a corresponding interface formed on the tool 14 according to FIG. 3 on the back of the frame 20. Data is automatically exchanged via the interfaces when a tool 14 is inserted or put into operation and when the tool 14 is removed or decommissioned. It is understood that in this case the entire data carrier 36 is advantageously arranged on the rear of the frame 20. It goes without saying that a wide variety of transmission techniques (with contacts, contactless with ultrasound, infrared, via antenna with transmitter, etc.) can be used. In the case of radio transmissions, there are hardly any spatial restrictions with regard to the spatial arrangement of the data carrier and the input and output device of the data transmission device of the crimping device 2. When the tool 14 is taken out of operation, solidates can be read into the data carrier 36 of the tool 14, which, for example, correspond to the mean value of a certain number of measurement data. The tool can then be checked for further functionality and service life in a central tool management system on the basis of this data and in comparison with the original solidates and, if appropriate, the number of total crimp connections made with the tool.
It is understood that the invention can be used for a wide variety of crimping devices or crimping presses and tools. For example, the circumference of a tool can be considerably smaller than that of FIG. 2. In special versions, for example, only tool parts 18 and 24 can be replaced. Then one of these tool parts carries the data carrier.
Overall, the invention creates a possibility of monitoring the quality of crimp connections made with a wide variety of tools without loss of time and extremely reliably, the condition of the tools themselves being able to be recorded in a predictable manner. The tool-specific target data stored on the tool itself relate not only to the tool itself, but preferably also to the crimp connection component and the cable for which the tool is to be used. They do not or only weakly depend on the respective crimping device and, if necessary, can contain a corresponding additional parameter. The invention can be used wherever several tools with tool-specific data, which are used for quality monitoring or for controlling a device working with the tool, are used alternately in one or more devices.

Claims (8)

Verfahren zur Qualitätssicherung von in einer Crimpvorrichtung hergestellten Crimpverbindungen,
welche Crimpverbindungen dadurch hergestellt werden, daß ein Crimpanschlußbauteil (26) zwischen zwei relativ zueinander beweglichen Werkzeugteilen (18, 24) eines in die Crimpvorrichtung (2) einsetzbaren Werkzeugs (14) beim Aufeinanderzubewegen der Werkzeugteile an einem Kabelende befestigt wird,
wobei die Qualität der Crimpverbindung dadurch überwacht wird, daß Meßdaten, die aus einer bei dem Crimpvorgang gemessene Kraft-Weg-Kennlinie der beiden relativ zueinander beweglichen Werkzeugteile erhalten werden, mit gespeicherten Solldaten verglichen werden,
dadurch gekennzeichnet,
daß das Werkzeug (14) mit einem Datenträger (36) versehen wird, der werkzeugspezifische Solidaten trägt und daß die werkzeugspezifischen Solldaten mit den jeweiligen Meßdaten verglichen werden.Process for quality assurance of crimp connections made in a crimping device,
which crimp connections are made in that a crimp connection component (26) is fastened between two tool parts (18, 24) of a tool (14) which can be inserted into the crimping device (2) and which are movable relative to one another when the tool parts are moved towards one another at a cable end,
the quality of the crimp connection being monitored by comparing measurement data obtained from a force-displacement characteristic curve of the two tool parts which are movable with respect to one another and stored reference data,
characterized,
that the tool (14) is provided with a data carrier (36) which carries tool-specific solidates and that the tool-specific target data are compared with the respective measurement data. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß vor der Entnahme eines Werkzeugs (14) aus der Crimpvorrichtung (2) auf dem Datenträger (36) des Werkzeugs (14) den vorher durchgeführten Crimpvorgängen entsprechende Daten gespeichert werden.Method according to claim 1,
characterized in that prior to the removal of a tool (14) from the crimping device (2) on the data carrier (36) of the tool (14), data corresponding to the crimping processes previously carried out are stored. Crimpwerkzeug zur Verwendung in einer Crimpvorrichtung,
welches Crimpwerkzeug (14) zwei zur Herstellung einer Crimpverbindung zwischen einem Crimpanschlußbauteil (26) und einem Kabelende dienende, relativ zueinander bewegliche Werkzeugteile (18, 24) enthält,
gekennzeichnet durch einen an dem Werkzeug (14) angebrachten Datenträger (36) mit werkzeugspezifischen Daten.Crimping tool for use in a crimping device,
which crimping tool (14) contains two tool parts (18, 24) which are movable relative to one another and which serve to produce a crimp connection between a crimp connection component (26) and a cable end,
characterized by a data carrier (36) attached to the tool (14) with tool-specific data. Crimpwerkzeug nach Anspruch 3,
dadurch gekennzeichnet, daß der Datenträger (36) eine dem Werkzeug (14) zugeordnete Kraft-Weg-Kennlinie enthält.Crimping tool according to claim 3,
characterized in that the data carrier (36) contains a force-displacement characteristic curve associated with the tool (14). Crimpwerkzeug nach Anspruch 3 oder 4,
dadurch gekennzeichnet, daß der Datenträger 36) einen Einrichtung zum Einlesen und Speichern neuer Daten und eine Einrichtung zum Auslesen der gespeicherten Daten enthält.Crimping tool according to claim 3 or 4,
characterized in that the data carrier 36) contains a device for reading in and storing new data and a device for reading out the stored data. Crimpvorrichtung zur Verwendung mit einem Crimpwerkzeug nach einem
der Ansprüche 3 bis 5, mit Sensoren zum Erfassen von Meßgrößen während eines Crimpvorgangs, einer Datenverarbeitungseinrichtung (15) zum Umrechnen der Ausgangssignale der Sensoren in Meßdaten und zum Vergleichen der Meßdaten mit in einem Speicher gespeicherten Solldaten,
gekennzeichnet durch
eine Datenübertragungseinrichtung (46) zum Übertragen von auf dem Datenträger des Werkzeugs gespeicherten Solidaten in den Speicher der Datenverarbeitungseinrichtung (15).Crimping device for use with a crimping tool according to a
of claims 3 to 5, with sensors for detecting measured variables during a crimping process, a data processing device (15) for converting the output signals of the sensors into measured data and for comparing the measured data with target data stored in a memory,
marked by
a data transfer device (46) for transferring solidates stored on the data carrier of the tool into the memory of the data processing device (15). Crimpvorrichtung nach Anspruch 6,
dadurch gekennzeichnet, daß die Datenverarbeitungseinrichtung (15) die Anzahl der mit einem Werkzeug (14) ausgeführten Crimpvorgänge erfaßt und in dessen Datenspeicher überträgt.Crimping device according to claim 6,
characterized in that the data processing device (15) detects the number of crimping operations carried out with a tool (14) and transfers it to its data memory. Crimpvorrichtung nach Anspruch 6 oder 7,
dadurch gekennzeichnet, daß die Datenverarbeitungseinrichtung (15) Meßdaten in den Datenspeicher des Werkzeugs (14) überträgt.Crimping device according to claim 6 or 7,
characterized in that the data processing device (15) transfers measurement data into the data memory of the tool (14).
EP99117658A 1998-09-21 1999-09-07 Quality assuring process for in a crimping device made crimped connection as well as a crimping tool and crimping device Expired - Lifetime EP0989636B1 (en)

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DE19843156 1998-09-21
DE19843156A DE19843156A1 (en) 1998-09-21 1998-09-21 Process for quality assurance of crimp connections produced in a crimping device, as well as crimping tool and crimping device

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EP0989636A3 (en) 2002-05-22
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DE19843156A1 (en) 2000-04-20
DE59913010D1 (en) 2006-03-30
US6418769B1 (en) 2002-07-16

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