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EP2694230B1 - Presse radiale - Google Patents

Presse radiale Download PDF

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Publication number
EP2694230B1
EP2694230B1 EP12707479.7A EP12707479A EP2694230B1 EP 2694230 B1 EP2694230 B1 EP 2694230B1 EP 12707479 A EP12707479 A EP 12707479A EP 2694230 B1 EP2694230 B1 EP 2694230B1
Authority
EP
European Patent Office
Prior art keywords
press
radial
drive unit
geometry
further drive
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
EP12707479.7A
Other languages
German (de)
English (en)
Other versions
EP2694230A1 (fr
Inventor
Harald VON WAITZ
Carsten Baumgartner
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.)
Uniflex Hydraulik GmbH
Original Assignee
Uniflex Hydraulik GmbH
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Filing date
Publication date
Application filed by Uniflex Hydraulik GmbH filed Critical Uniflex Hydraulik GmbH
Publication of EP2694230A1 publication Critical patent/EP2694230A1/fr
Application granted granted Critical
Publication of EP2694230B1 publication Critical patent/EP2694230B1/fr
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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
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/044—Means preventing deflection of the frame, especially for C-frames

Definitions

  • the present invention relates to a yoke-press-type radial press comprising a press tool having a plurality of press jaws arranged around a press axis and two structural elements each comprising a press yoke, the press yokes relative to each other in a direction of movement which is in a plane perpendicular to the press axis are movable and form between them a receiving space in which the pressing tool is received, further provided for moving the two press yokes relative to each other two arranged on both sides of the receiving space for the pressing tool, a reference plane defining tie rods comprehensive drive unit is provided with a direction parallel to the direction of action and Pressing jaws so sliding support on sliding surfaces on the press yokes, that the relative movement of the press yokes in the direction of movement in a radial movement of the pressing jaws towards the Pressena is implemented.
  • Jochpressenbauweise executed radial presses have basically proven in practice. They are considered to be robust and powerful, which they especially for makes such applications particularly suitable, in which particularly high forming forces are required.
  • the present invention has made it its mission to further improve radial presses of the generic construction in the sense that the work result meets even higher quality requirements than before.
  • a compensation device with a further, at least one drive element comprehensive drive unit and an associated control unit is provided in a generic radial press in Jochpressenbauweise, the drive element of the further drive unit acts between the two structural elements and offset at least one of the structural elements to the
  • the control unit acts on the further drive unit in such a way that the force provided by the drive element between the two structural elements counteracts a change in the press geometry which occurs during pressing as a result of an action occurring outside the reference plane from a workpiece the pressing jaws adjusts the applied reaction force to the pressing jaws.
  • a change in the press geometry is counteracted, which then adjusts in known generic radial presses, if - especially with an offset in the axial direction relative to the reference plane arranged positioning of the Workpiece in the pressing tool - set when closing the radial press from the workpiece on the dies jawing reaction forces that are offset from the reference plane, which are induced by interaction of - running in the reference plane - closing forces and the offset thereto extending reaction forces machine internal bending moments.
  • the press geometry is avoided in application of the present invention in that the radial press according to the invention has a further drive unit and an associated control unit compensation device, wherein (also) the drive element of the further drive unit between the two structural elements acts, namely in the sense of generating a compensating moment directed counter to the induced bending moment described above.
  • the control unit the further drive unit is controlled in such a way that the force provided by it and acting between the two structural elements counteracts the bending moment explained above and thus the change in the press geometry.
  • a separate, further drive unit which actively counteracts by means of at least one drive element a change in the press geometry due to a relative to the reference plane staggered arrangement of the workpiece during pressing, it is even possible, various structural elements of the radial press, according to the prior Technique to absorb the induced bending moments and thus must be correspondingly large in size to keep a disadvantageous deformation of the radial press (change in press geometry) within tolerable limits, dimensioned smaller than in the prior art.
  • radial presses according to the invention although they, as stated, can produce very high quality workpieces, be made easier than is possible in the prior art.
  • the effective direction of the further drive element can be oriented so that the force generated by this, acting between the two structural elements force has a parallel to the press axis directed force component, wherein in the extreme case, the direction of action of the further drive element may even be directed substantially parallel to the press axis.
  • Such an orientation of the direction of action of the further drive element which is parallel to the press axis, promotes the described generation of a compensating moment directed against the induced bending moment in typical geometries of the yoke press design, typically one such with respect to a compact design of the inventive radial press (inclined to the reference plane) integration of the further drive element in the radial press will prefer, in which the effective direction of the further drive element next to a parallel to the press axis component has a parallel to the reference plane, in particular directed parallel to the direction of movement component.
  • the force generated by the further drive element, acting between the two structural elements be parallel to the press axis directed force component has; Rather, the effective direction of the further drive element can also be oriented parallel to the reference plane in the individual case. Also, such a construction has advantages, namely by the depth of the radial press (in the axial direction) are kept low and the control unit can be made relatively simple.
  • the further drive unit comprises two drive elements which are effective on different sides of the reference plane. Because in this case, depending on the offset of the workpiece relative to the reference plane in one or the other direction for the purpose of compensating the induced bending moment and avoiding the change in the press geometry that of the drive elements of the further drive unit are activated, such a compensation force while simultaneously providing or providing the closing force provided by the (first) drive unit.
  • control unit comprises a position sensor which determines the relative arrangement of a workpiece relative to the reference plane.
  • the position sensor generates a position signal which is made available to the control unit in order to obtain from it the necessary for an effective compensation of the induced by the displacement of the workpiece internal bending moment by the determine additional drive unit provided compensation force.
  • the further drive unit has at least one hydraulic drive element and the control unit comprises a hydraulic self-regulation.
  • a hydraulic self-regulation in this sense is when a closed hydraulic control loop exists such that the loading of the at least one hydraulic drive element of the further drive unit via valves whose hydraulic characteristics (flow behavior) directly depends on a change in the press geometry.
  • a change in the press geometry occurring when the press is closed due to an arrangement of the workpiece in the press offset from the reference plane acts directly on the hydraulic valves of the hydraulic self-control such that the further drive unit provides a force counteracting the change in press geometry.
  • the compensation force provided by the further drive unit is therefore always exactly as large as it has to be in order to prevent the change in the press geometry.
  • control unit a geometry sensor comprise, which detects the deviation of the press geometry from a desired geometry, wherein the corresponding signal is processed in a control of the further drive unit.
  • one reference structure can be fixedly connected to one of the two structural elements, relative to which the deviation of the other structural element from the desired geometry is determined by means of a measuring arrangement. Provision may be made here for a contacting measuring arrangement, for example a stylus, as well as a non-contact measuring arrangement, for example a magnetic proximity sensor.
  • the geometry sensor may comprise, for example, a non-contact measuring arrangement having a laser and an optical sensor acted on by it.
  • the optical sensor can be designed in particular as a CCD chip, wherein the deviation of the point of impact of the laser beam determined in this chip from a reference point is used as a measure of the deformation, ie the change in the press geometry.
  • the further drive unit is controlled by the control unit, in this case acted upon so that the actual point of impact of the laser beam on the CCD chip coincides with the reference point.
  • the additional drive unit does not necessarily have to act directly between the two structural elements.
  • this is advantageous in such yoke presses, in which (see. DE 4235465 A1 ) Glasanker are provided which serve not only the initiation of the closing force in the press yoke firmly connected to them, but also the leadership of the respective (typically upper) press yoke relative to the other (typically lower) press yoke.
  • the further drive unit may be arranged so that it (indirectly) between the first and the second structural element acts, namely by attacking on the one hand on the first press yoke comprising the first structural element and on the other hand on the second press yoke leading guide structure.
  • the illustrated in the drawing, executed in Jochpressenbauweise radial press comprises as essential structural components two structural elements, namely a first structural element 1 and a second structural element 2.
  • the first, a first, lower press yoke 3 comprehensive structural element 1 forms a fixed base.
  • the second structural element 2 comprises a second, upper press yoke 4.
  • the upper press yoke 4 is movable relative to the lower press yoke 3 in a direction of movement A which extends in a plane perpendicular to the press axis 5.
  • two tie rods 6 are fixedly connected to the upper press yoke 4, which extend parallel to one another in the direction of movement A and are slidably guided in the lower press yoke 3.
  • the two tie rods 6 are part of a drive unit. They are connected in the region of their lower ends to a drive element which is accommodated in the lower structural element 1 forming the base and by means of which the upper press yoke 4-via the tie rods 6-can be moved up and down.
  • the two press yokes 3 and 4 form between them and between the two tie rods 6 a receiving space 7, which is intended to receive a - not shown - pressing tool, which comprises a plurality of concentrically arranged around the press axis 5 around pressing jaws, of which at least two Sliding surfaces are slidably supported on mating surfaces 8 of the press yokes 3 and 4 such that the relative movement of the press yokes 3 and 4 in the direction of movement A is converted into a radial movement of the press jaws in the direction of the press axis 5.
  • the illustrated radial press also has a compensation device 9, which is a change in the press geometry, in particular when a workpiece to be pressed in the radial press not in the plane spanned by the axes 10 of the two tie rods 6 reference plane (or not symmetrical to the reference plane), but rather, axially offset from this reference plane, counteracts.
  • the press geometry is determined by the geometric relationships of the two press yokes 3 and 4 relative to each other with the exception of the intended and operational - using the drive unit - changing distance of the two press yokes 3 and 4 in the direction of movement A.
  • the compensation device 9 includes, inter alia, a further drive unit 11 with two further drive elements 12 each in the form of a hydraulic cylinder-piston unit 13.
  • Each of the two hydraulic cylinder-piston units 13 acts between the first structural element 1 and the second structural element 2.
  • the respective cylinder 14 on a console Hinged 15 which forms a structural part of the first structural element 1, and the respective piston 16 on a molded-on to the upper press yoke approach 17.
  • the two further drive elements 12 are specifically oriented by the inclination of the cylinder-piston units 13 includes their respective axis (direction of action) with the reference plane at an angle.
  • predetermined - offset of the points of attack of the two cylinder-piston units 13 on the upper press yoke 4 can be by applying the cylinder-piston units 13 to the upper press yoke 4 a compensation torque to a in the Generate reference plane lying horizontal axis.
  • the cylinder-piston units 13 By adjusting the loading of the cylinder-piston units 13 to a moment which is induced in the case of the reference plane axially offset insertion of a workpiece to be pressed in the radial press between the two structural elements 1 and 2, such that the generated compensation torque the Amounts to the same size as the induced moment, but is directed to this opposite, a change in the press geometry at off-center, ie outside the reference plane resulting stress on the press is suppressed. Due to their specific inclination, the cylinder-piston units 13 provide a force acting between the two structural elements with a force component directed parallel to the press axis, which can additionally be used to generate a compensating moment.
  • the action on the cylinder-piston units 13 is controlled by a control unit assigned to the further drive unit 9 in the sense of generating or providing the compensation torque required for the torque compensation described, so that, as a result, the further drive elements 12, through which Controlled control unit, acting with such a force on the first and the second structural element 1 and 2, that the thus generated compensating moment counteracts a moment that occurs during pressing due to a taking place outside the reference plane influence of the force exerted by a workpiece on the pressing jaws reaction force adjusts the pressing jaws.
  • the control unit comprises a geometry sensor 18, which detects the deviation of the press geometry from a desired geometry via an optical measurement.
  • the geometry sensor 18 comprises a non-contact measuring arrangement in the form of a fixedly connected to the upper press yoke 4 laser 19 and acted upon by this, fixed with the lower press yoke 3 connected optical sensor 20.
  • the latter includes a CCD chip and generates a for a possible deformation of the Radial press, ie a deviation of the press geometry from the desired geometry representative signal, which is processed in one of the further drive unit 11 associated control in the sense of the above-mentioned loading of the cylinder-piston units 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (12)

  1. Presse radiale de type presse à fourche, comprenant un outil de compression avec une pluralité de mâchoires de compression disposées autour d'un axe de compression (5) et deux éléments structurels (1, 2) comprenant chacun une fourche de presse (3, 4), sachant que les fourches de presse sont mobiles l'une par rapport à l'autre dans un sens de déplacement (A) qui passe dans un plan vertical à l'axe de compression, et forment entre elles un espace de réception (7) dans lequel l'outil de compression est reçu, sachant qu'en outre, pour déplacer les deux fourches de compression entre elles, un dispositif d'entraînement comprenant deux tirants (6) définissant un plan de référence et disposés des deux côtés de l'espace de réception pour l'outil de compression, ayant un sens actif parallèle au sens de déplacement est prévu, et des mâchoires de compression s'appuient en glissant sur les fourches de presse par des surfaces de glissement de telle façon que le mouvement relatif de la fourche de pression dans le sens de déplacement est converti en un mouvement radial des mâchoires de compression en direction de l'axe de compression,
    caractérisée en ce
    qu'un dispositif de compensation (9) doté d'une unité d'entraînement supplémentaire (11) comprenant au moins un élément d'entraînement (12), et une unité de réglage correspondante sont prévus, sachant que l'élément d'entraînement de l'unité d'entraînement supplémentaire agit entre les deux éléments structurels (1, 2) et se met en prise sur au moins un des éléments structurels en étant décalé par rapport au plan de référence, et sachant qu'en outre, l'unité de réglage agit de telle façon sur l'unité d'entraînement supplémentaire que la force fournie par son élément d'entraînement agissant entre les deux éléments structurels, agit contre une modification de la géométrie de la presse qui, lors de la compression, se produit sur les mâchoires de compression suite à un effet se produisant hors du plan de référence, de la force de réaction exercée par une pièce sur les mâchoires de compression.
  2. Presse radiale selon la revendication 1, caractérisée en ce que le sens d'action de l'élément d'entraînement (12) de l'unité d'entraînement supplémentaire (11) est ainsi orienté que la force produite par l'élément d'entraînement supplémentaire et agissant entre les deux éléments structurels (1, 2) présente une composante de force dirigée parallèlement à l'axe de compression (5).
  3. Presse radiale selon la revendication 2, caractérisée en ce que le sens d'action de l'élément d'entraînement (12) de l'unité d'entraînement supplémentaire (11) est essentiellement parallèle à l'axe de compression (5).
  4. Presse radiale selon la revendication 2, caractérisée en ce que le sens d'action de l'élément d'entraînement (12) de l'unité d'entraînement supplémentaire (11) inclut un angle avec le plan de référence, de telle sorte qu'il présente une composante dirigée parallèlement à l'axe de compression (5) et verticale sur l'axe de compression.
  5. Presse radiale selon la revendication 1, caractérisée en ce que le sens d'action de l'élément d'entraînement (12) de l'unité d'entraînement supplémentaire (11) est orienté parallèlement au plan de référence.
  6. Presse selon l'une des revendications 1 à 5, caractérisée en ce que l'unité d'entraînement supplémentaire (11) comprend deux éléments d'entraînement (12) agissant sur des côtés différents du plan de référence.
  7. Presse selon l'une des revendications 1 à 6, caractérisée en ce que l'unité de réglage comprend un capteur de position qui calcule l'agencement relatif d'une pièce par rapport au plan de référence.
  8. Presse selon l'une des revendications 1 à 7, caractérisée en ce que l'unité de réglage comprend un capteur de géométrie (18) qui détecte l'écart de géométrie de compression d'une géométrie nominale, sachant que le signal correspondant est traité dans une commande de l'unité d'entraînement supplémentaire (11).
  9. Presse radiale selon la revendication 8, caractérisée en ce qu'une structure de référence est reliée fixement à l'un des deux éléments structurels (1, 2) par rapport à laquelle l'écart de l'autre élément structurel de la géométrie nominale est calculé au moyen d'un dispositif de mesure à contact.
  10. Presse radiale selon la revendication 8, caractérisée en ce que le capteur de géométrie (18) effectue une mesure optique de la géométrie de compression.
  11. Presse radiale selon la revendication 10, caractérisée en ce que le capteur de géométrie (18) comprend un dispositif de mesure sans contact présentant un laser (19) et un capteur optique (20) touché par celui-ci.
  12. Presse radiale selon l'une des revendications 1 à 6, caractérisée en ce que l'unité d'entraînement supplémentaire (11) présente au moins un élément d'entraînement hydraulique (12) et l'unité de réglage comprend un auto-réglage hydraulique.
EP12707479.7A 2011-04-01 2012-02-28 Presse radiale Active EP2694230B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110015770 DE102011015770A1 (de) 2011-04-01 2011-04-01 Radialpresse
PCT/EP2012/000850 WO2012130364A1 (fr) 2011-04-01 2012-02-28 Presse radiale

Publications (2)

Publication Number Publication Date
EP2694230A1 EP2694230A1 (fr) 2014-02-12
EP2694230B1 true EP2694230B1 (fr) 2015-01-21

Family

ID=45808739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12707479.7A Active EP2694230B1 (fr) 2011-04-01 2012-02-28 Presse radiale

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Country Link
EP (1) EP2694230B1 (fr)
DE (1) DE102011015770A1 (fr)
WO (1) WO2012130364A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018115744A1 (de) 2018-06-29 2020-01-02 Uniflex-Hydraulik Gmbh Radialpresse sowie Verfahren zum Fügen zweier Bauteile mittels Radialpressung
DE102018115750B3 (de) 2018-06-29 2019-07-11 Uniflex-Hydraulik Gmbh Radialpresse sowie Verfahren zum Fügen zweier Bauteile mittels Radialpressung
CN113632015B (zh) 2019-03-29 2024-05-28 尤尼弗莱克斯-液压有限责任公司 用于制造多个复合结构的方法
DE102020125890B3 (de) 2020-10-02 2022-03-10 Uniflex - Hydraulik GmbH Radialpresse
EP4144456A1 (fr) 2021-09-02 2023-03-08 Uniflex-Hydraulik GmbH Procédé de fabrication d'une conduite hydraulique à haute pression
DE102022109427B4 (de) 2022-04-19 2024-04-25 Uniflex - Hydraulik GmbH Radialpresse
DE202022102074U1 (de) 2022-04-19 2022-04-27 Uniflex - Hydraulik GmbH Radialpresse
CN114801302B (zh) * 2022-05-25 2023-03-31 华中科技大学 一种内置变形补偿模块的智能压力机
DE102023109974B3 (de) 2023-04-20 2024-06-20 Uniflex - Hydraulik GmbH Radialpresse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2431585A1 (de) * 1974-07-01 1976-01-22 4 P Verpackungen Gmbh Ausgleichsvorrichtung fuer laengenaenderungen bei arbeitsmaschinen mit zuganker
DE4135465A1 (de) 1991-10-28 1993-04-29 Schroeck Peter Dipl Ing Fh Radialpresse mit zwei radial gegeneinander beweglichen pressenjochen
US7383709B2 (en) * 2005-08-04 2008-06-10 Custom Machining Services, Inc. System and process for crimping a fitting to a fluid conduit
AT507111B1 (de) * 2008-07-30 2012-04-15 Ehrenleitner Franz Presse

Also Published As

Publication number Publication date
DE102011015770A1 (de) 2012-10-04
WO2012130364A1 (fr) 2012-10-04
EP2694230A1 (fr) 2014-02-12

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