EP2452762B1 - Dispositif pour sourveiller la force de compression d' un outil de presse - Google Patents

Dispositif pour sourveiller la force de compression d' un outil de presse Download PDF

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Publication number
EP2452762B1
EP2452762B1 EP20110188070 EP11188070A EP2452762B1 EP 2452762 B1 EP2452762 B1 EP 2452762B1 EP 20110188070 EP20110188070 EP 20110188070 EP 11188070 A EP11188070 A EP 11188070A EP 2452762 B1 EP2452762 B1 EP 2452762B1
Authority
EP
European Patent Office
Prior art keywords
pressure
checking device
holder
pressing tool
biasing
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.)
Active
Application number
EP20110188070
Other languages
German (de)
English (en)
Other versions
EP2452762A1 (fr
Inventor
Gunnar Dipl.-Ing. Gottschaldt
Sven Dipl.-Ing. Meyer
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.)
Novopress GmbH Pressen und Presswerkzeuge and Co KG
Original Assignee
Novopress GmbH Pressen und Presswerkzeuge and Co KG
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 Novopress GmbH Pressen und Presswerkzeuge and Co KG filed Critical Novopress GmbH Pressen und Presswerkzeuge and Co KG
Publication of EP2452762A1 publication Critical patent/EP2452762A1/fr
Application granted granted Critical
Publication of EP2452762B1 publication Critical patent/EP2452762B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/048—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using presses for radially crimping tubular elements
    • 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
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses

Definitions

  • the invention relates to a testing device for checking the pressing force of a particular hydraulic, electric or electro-hydraulic pressing tool.
  • pressing tools for example, pipe connections are made by pressing pressfittings are pressed.
  • a hydraulic pressing tool on a hydraulic piston which is actuated for example via an electrically driven pump.
  • the hydraulic piston is connected to actuating elements which act directly or indirectly on pressing jaws.
  • the pressing force applied by the pressing tool must not fall below a minimum pressing force in order to ensure a secure pressing of the pipe fitting. It is therefore necessary to check the pressing force applied by the pressing tool at regular intervals.
  • the tester has a housing which is fixed in the press tool via a cylindrical projection.
  • a piston is arranged, the piston rod protrudes through the cylindrical projection.
  • Force is applied to the free end of the piston rod for testing the pressing force of the pressing tool via corresponding actuating elements of the pressing tool.
  • a disc spring package is disposed within the housing on the Piston acts.
  • a pin-shaped display element is connected to the piston via a tubular extension which is surrounded by the disc springs. By squeezing the disc springs is thus a displacement of the pin-shaped display element.
  • the pin-shaped display element cooperates with a latching means which engages upon reaching the required pressing force. If the pin-shaped display element is thus held by the locking means, the required pressing force is reached.
  • a locking means for fixing the pin-shaped display element is technically complicated and therefore error-prone. For example, it is no longer possible to ensure that the locking element actually engages even if there are only slight soiling, even though the required pressing force was generated by the pressing tool.
  • the object of the invention is to provide a tester for checking the pressing force of a pressing tool, which is simple and inexpensive and ensures a reliable measurement of the test load over a long period of time.
  • the object is achieved by a test device according to claim 1.
  • the testing device for checking the pressing force of a particular hydraulic, electric or electro-hydraulic pressing tool has a permanently connectable to the pressing tool to be tested holding element. Furthermore, the tester has a relative to the holding element displaceably arranged pressure element and arranged between the holding element and the pressure element counter-pressure element on. The displacement of the pressure element relative to the holding element is effected by actuating the pressing tool. In this case, actuating elements are moved, in particular displaced, in a hydraulic pressing tool via a hydraulic piston. The actuators act on the pressure element.
  • the counter-pressure element which is arranged at least partially between the holding element and the pressure element or individual components of these elements, according to the invention comprises at least one elastomeric body.
  • Elastomeric bodies have the advantage that is essential to the invention, in comparison to a disc spring packet, that settling or wear phenomena occur to a considerably lesser extent.
  • the behavior of the elastomer body is independent of the lubrication between individual elements such as disc springs. As a result, it can be ensured over a long period of time and a large number of test procedures that the counterforce generated by the elastomer body changes only slightly.
  • the counter-pressure element exclusively on one or more elastomeric body. If a plurality of elastomeric bodies are provided, these may be arranged parallel and / or in series. By replacing individual elastomer body thus the test force can be varied easily.
  • the display element may be, for example, a pressure sensor, in particular an electrical pressure sensor, which generates an acoustic or optical signal when the required test force is reached, for example. If necessary, an electrical contact is sufficient as a display element. Since the elastomeric body is compressed, at least individual components of the holding element and the pressure element move towards each other. In this case, upon reaching a sufficient path, which is proportional to the force of the counter-pressure element, an electrical contact could be closed become. As a result, in turn, an optical or acoustic signal can be triggered.
  • the display element is a mechanical display element, so that an additional power supply of the tester is not required.
  • an example, pin-shaped display element may be connected to the holding element or the pressure element, wherein a relative movement between the holding element and pressure element is visible on the display element. This is done in particular by appropriate markings on the display and / or the holding or printing element.
  • the Haiteelement on a connectable to the pressing tool fixing preferably takes place via those connecting elements which also serve to receive the pressing jaws or a press sling.
  • the holding element has a holding plate, which is preferably connected via a particular tubular connecting element with the fixing element. The fixing element, the connecting element and the retaining plate thus represent a unit.
  • the pressure element has a pressure plate, which in particular surrounds the connection element of the holding element.
  • An actuating element is connected to the pressure plate.
  • the pressure force of the pressing tool acts, wherein the pressing force of the pressing tool is transmitted in particular via the actuating elements of the pressing tool on the actuating elements of the pressure element.
  • these are preferably passed through the fixing element of the holding element or arranged in corresponding recesses.
  • the at least one elastomeric body is preferably arranged between the holding plate and the pressure plate. If only one elastomeric body or a plurality of elastomeric bodies connected in series are provided, these are preferably annularly cylindrical and surround the connecting element of the retaining element. It is also possible that a plurality of elastomer bodies arranged parallel to one another are arranged around the connecting element. A combination of this arrangement of multiple elastomeric body is possible.
  • a biasing element for biasing the at least one elastomeric body is provided.
  • biasing the biasing of the elastomer body can be done at rest. In this way, the test force can be adjusted because the at least one elastomeric body to achieve the same path of the display element must compress the at least one elastomeric body stronger. Also can be done by providing such a biasing element readjustment and thus compensation of wear.
  • the biasing element acts in a particularly preferred embodiment on the retaining plate of the holding element.
  • the biasing element moves the holding plate in the direction of the pressure plate
  • the biasing element is fixable to the connecting element of the holding element.
  • the fixation takes place in different positions, wherein it is particularly preferred that the biasing element surrounds the connecting element.
  • the biasing element is designed as a self-locking nut, which cooperates with a thread of the tubular connecting element.
  • the testing device is connected to a pressing tool for its verification.
  • the pressing tool 10 which is shown only partially in the figures, has a hydraulic cylinder 12, in which a hydraulic fluid for generating a pressing force is supplied via an electrically operated hydraulic pump, not shown. With the hydraulic piston, two roller-shaped actuating elements 14 are connected in the illustrated embodiment. About the actuators 14, the pressing force is transmitted to the pressing jaws or the press loop. Also for checking the pressing force of the pressing tool 10, a transfer of the pressing force via the actuating elements 14 takes place on the tester.
  • the testing device for checking the pressing force has a holding element and a pressure element.
  • the holding element which is firmly connected to a receptacle 16 of the pressing tool 10, has a fixing element 18, a fixedly connected to the fixing element 18 tubular connecting element 20 and a retaining plate 22.
  • the pressure element which is displaceable relative to the holding element, has a pressure plate 24, which is connected via an intermediate element 26 with an actuating element 28.
  • On the confirmation element 28 of the pressure element acts during testing of the pressing tool 10 via the actuating elements 14 of the pressing tool 10, the pressing force.
  • an arranged between the retaining plate 22 and the pressure plate 24 elastomeric body 30 is compressed or elastically deformed.
  • a plurality of, in particular parallel and / or arranged in series with each other elastomeric body may be provided.
  • a pin-shaped display element 32 is disposed within the tubular connecting element 20.
  • the pin-shaped indicator 32 is slidably held in the hollow tubular connector.
  • the displacement of the display element 32 via a connecting pin 34.
  • the connecting pin 34 is fixedly connected to the pressure plate 24 and engages over a slot 26 (FIG. Fig. 2 ) in the connecting element 20 a.
  • when checking the pressing force of the pressing tool 10 is a pushing out of the pin-shaped display element 32 from an opening 38 of the connecting element 20.
  • markers 40 are predetermined so that it can be determined in a simple manner, whether the required pressing force has been achieved ,
  • a biasing element 42 is additionally provided.
  • the biasing element 42 is formed in the illustrated embodiment as a self-locking nut which engages in a provided on the outside of the tubular connecting element 20 thread 44. Via the nut 42 and an intermediate disc 46, a biasing force can be exerted on the retaining plate 22 and thus on the elastomer body 30. Due to the provision according to the invention of a biasing element 42, it is possible, for example, to compensate for the wear of the elastomeric body.
  • a predefined biasing force may be exerted on the elastomeric body 30 so that the test force to be generated by the pressing tool 10 is higher in order to push the indicating element 32 out of the opening 38 by a predetermined distance. This is realized in particular in that the application of the biasing force is independent of the display element 32. An application of the biasing force by turning the nut 42 does not change the position of the display element 32.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Claims (13)

  1. Appareil de contrôle pour contrôler la force de pressage d'un outil de pressage (10) notamment hydraulique, comportant
    un élément de retenue (18, 20, 22) pouvant être relié de façon fixe à un outil de pressage (10) à contrôler,
    un élément de pression (24, 26, 28) disposé de façon à pouvoir coulisser par rapport à l'élément de retenue (18, 20, 22) et
    un élément de contre-pression (30) disposé entre l'élément de retenue (18, 20, 22) et l'élément de pression (24, 26, 28)
    caractérisé en ce que
    l'élément de contre-pression (30) comporte au moins un corps élastomère.
  2. Appareil de contrôle selon la revendication 1, caractérisé en ce que l'élément de contre-pression (30) comporte exclusivement un ou plusieurs corps élastomères.
  3. Appareil de contrôle selon la revendication 1 ou 2, caractérisé en ce que l'élément de contre-pression (30) comporte plusieurs corps élastomères disposés en parallèle et/ou en série.
  4. Appareil de contrôle selon l'une des revendications 1 à 3, caractérisé en ce que l'au moins un corps élastomère (30) est interchangeable afin de régler la contre-pression.
  5. Appareil de contrôle selon l'une des revendications 1 à 4, caractérisé en ce que l'élément de retenue (18, 20, 22) et/ou l'élément de pression (24, 26, 28) est relié à un élément d'indication (32) indiquant la force de pression.
  6. Appareil de contrôle selon la revendication 5, caractérisé en ce que l'élément d'indication (32) est conformé en tige et est avantageusement disposé à l'intérieur d'un élément de liaison tubulaire (20) de l'élément de retenue (18, 20, 22) et est sorti de l'élément de liaison (20) pour l'indication de la pression.
  7. Appareil de contrôle selon l'une des revendications 1 à 6, caractérisé en ce que l'élément de retenue (18, 20, 22) possède un élément de fixation (18) pouvant être relié à l'outil de pressage et un disque de retenue (22) relié à l'élément de fixation (18) par un élément de liaison (20) notamment tubulaire.
  8. Appareil de contrôle selon l'une des revendications 1 à 7, caractérisé en ce que l'élément de pression (24, 26, 28) possède un disque de pression (24) entourant avantageusement l'élément de liaison (20) de l'élément de retenue (18, 20, 22) et un élément d'actionnement (28) qui est relié au disque de pression (24) et sur lequel agit l'outil de pressage.
  9. Appareil de contrôle selon la revendication 7 ou 8, caractérisé en ce que l'au moins un corps élastomère (30) est disposé entre le disque de retenue (22) et le disque de pression (24).
  10. Appareil de contrôle selon l'une des revendications 1 à 9, caractérisé en ce que l'élément de retenue possède un élément de précontrainte (42) destiné à précontraindre l'au moins un corps élastomère (30).
  11. Appareil de contrôle selon la revendication 10, caractérisé en ce que l'élément de précontrainte (42) agit sur le disque de retenue (22).
  12. Appareil de contrôle selon la revendication 10 ou 11, caractérisé en ce que l'élément de précontrainte (42) peut être fixé à un élément de liaison (20) dans différentes positions.
  13. Appareil de contrôle selon la revendication 12, caractérisé en ce que l'élément de précontrainte (42) entoure l'élément de liaison (20) et est avantageusement conformé en écrou notamment autobloquant.
EP20110188070 2010-11-11 2011-11-07 Dispositif pour sourveiller la force de compression d' un outil de presse Active EP2452762B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202010015365U DE202010015365U1 (de) 2010-11-11 2010-11-11 Prüfgerät

Publications (2)

Publication Number Publication Date
EP2452762A1 EP2452762A1 (fr) 2012-05-16
EP2452762B1 true EP2452762B1 (fr) 2013-01-09

Family

ID=45464226

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110188070 Active EP2452762B1 (fr) 2010-11-11 2011-11-07 Dispositif pour sourveiller la force de compression d' un outil de presse

Country Status (2)

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EP (1) EP2452762B1 (fr)
DE (1) DE202010015365U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107538776A (zh) * 2017-08-30 2018-01-05 合肥工业大学 一种电液混动压力机及其控制方法
US11186057B2 (en) 2017-08-30 2021-11-30 Hefei University Of Technology Press machine and press machine execution system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3842037A1 (de) * 1988-12-14 1990-06-28 Wabco Westinghouse Fahrzeug Einrichtung zur erfassung einer axialkraft einer deichselkupplung
SE467986B (sv) * 1991-02-18 1992-10-12 Wabco Holdings Sab Lastcell foer avgivning av en signal beroende paa den daerpaa utoevade kraften jaemte en anvaendning av en lastcell vid ett bromsarrangemang
US5569866A (en) * 1994-11-02 1996-10-29 Allison; Malcolm M. Force measuring device
DE59806982D1 (de) * 1997-09-11 2003-02-27 Komax Holding Ag Dierikon Verfahren zur Bestimmung der Qualität einer Crimpverbindung
EP1070946A3 (fr) * 1999-07-20 2003-01-29 Geberit Technik Ag Dispositif d'essai de la force de compression d'un outil de presse hydraulique
DE50001848D1 (de) * 1999-11-24 2003-05-28 Von Arx Ag Sissach Presswerkzeuggerät und Verfahren zu dessen Steuerung
EP1123760A1 (fr) 2000-02-08 2001-08-16 Geberit Technik Ag Dispositif pour sourveiller la force de pression d'un outil de sertissage hydraulique
AU2008249954B2 (en) * 2007-05-16 2013-07-04 Gustav Klauke Gmbh Method for the operation of a motor-driven hand-held pressing apparatus, and hand-held pressing apparatus
DE202009003197U1 (de) * 2009-03-10 2010-05-06 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kommanditgesellschaft Handführbare Antriebseinrichtung für ein Pressgerät

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107538776A (zh) * 2017-08-30 2018-01-05 合肥工业大学 一种电液混动压力机及其控制方法
CN107538776B (zh) * 2017-08-30 2019-04-23 合肥工业大学 一种电液混动压力机及其控制方法
US11186057B2 (en) 2017-08-30 2021-11-30 Hefei University Of Technology Press machine and press machine execution system
US11518131B2 (en) 2017-08-30 2022-12-06 Hefei University Of Technology Press machine execution system

Also Published As

Publication number Publication date
EP2452762A1 (fr) 2012-05-16
DE202010015365U1 (de) 2012-02-15

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