EP4093601B1 - Presse radiale - Google Patents

Presse radiale Download PDF

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Publication number
EP4093601B1
EP4093601B1 EP21840480.4A EP21840480A EP4093601B1 EP 4093601 B1 EP4093601 B1 EP 4093601B1 EP 21840480 A EP21840480 A EP 21840480A EP 4093601 B1 EP4093601 B1 EP 4093601B1
Authority
EP
European Patent Office
Prior art keywords
press
radial
annular
radial press
jaws
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
EP21840480.4A
Other languages
German (de)
English (en)
Other versions
EP4093601A1 (fr
EP4093601C0 (fr
Inventor
Carsten Baumgartner
Reiner Viehl
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
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 Uniflex Hydraulik GmbH filed Critical Uniflex Hydraulik GmbH
Publication of EP4093601A1 publication Critical patent/EP4093601A1/fr
Application granted granted Critical
Publication of EP4093601C0 publication Critical patent/EP4093601C0/fr
Publication of EP4093601B1 publication Critical patent/EP4093601B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B7/00—Presses characterised by a particular arrangement of the pressing members
    • B30B7/04—Presses characterised by a particular arrangement of the pressing members wherein pressing is effected in different directions simultaneously or in turn
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B21J13/025—Dies with parts moving along auxiliary lateral directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0052—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for fluid driven presses
    • 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

Definitions

  • the present invention relates, as stated in the preamble of claim 1, to a radial press with a housing having a jacket section and an end-side annular support disk, a ring structure guided therein in a displaceable manner along a press axis and a plurality of press jaws arranged around the press axis, which are located radially on the support disk slidably guided and on which the ring structure acts by means of control surfaces inclined relative to the press axis, which rest on counter surfaces of the press jaws designed as sliding surfaces.
  • the ring structure which can be moved in the housing along the press axis, has an annular projection on the front side - limited by a conical outer surface and a conical inner surface, with helical teeth with a sawtooth profile being designed on the conical inner surface, which work in cooperation with corresponding ones on the pressing jaws Gears ensure a gradual rotation of the latter around the press axis.
  • the US 3,427,036 A discloses a clamping device that works according to a functional principle comparable to generic radial presses.
  • a pressure ring acting on the press jaws via wedge bevels has an annular hydraulic cylinder into which an annular piston is immersed, which in turn is connected to an annular support disk on the front via tie rods on which the pressure ring is slidably guided.
  • the present invention is aimed at providing a radial press of the generic type that is further and further improved in terms of practicality compared to the prior art set out above.
  • One of the relevant aspects concerns a particularly favorable ratio of the three variables: effective pressing force, maximum pressing path (maximum possible radial feed movement of the pressing jaws) and overall length of the radial press.
  • Another aspect of practical suitability is the suitability of the radial press in question for tasks that lie outside of usual standard applications, i.e. H. a wide possible range of applications.
  • the ring structure is designed in a crown shape on its end face facing the support disk with a number of axial projections corresponding to the number of press jaws, with each control surface in the radial inner surface one such a projection extends into it and furthermore the support disk has recesses assigned to the projections, into which the projections enter when the radial press is closed.
  • the relationship between the effective pressing force, maximum pressing path and radial press length can be optimized to one another to an appreciable extent. Because - compared to generic radial presses according to the prior art - the overall length remains unchanged, the effective lengths of the control surfaces can be significantly increased in radial presses according to the invention. Depending on the individual design, the maximum pressing path can be increased - with the angle of inclination of the control surfaces remaining unchanged - and/or - the maximum pressing force can be increased - if the angle of inclination of the control surfaces is reduced.
  • the use of single-stage radial presses according to the invention can even be considered; Since single-stage radial presses, for example in terms of the design of the sliding partners, are significantly less complex than two-stage radial presses, this is a significant advantage.
  • the design of the radial press according to the invention has the advantage that (because of the larger overlap of control surfaces and countersurfaces compared to the prior art) significant pressing forces can be applied to a workpiece even when the tool is wide open, without the danger exists that the pressing jaws tilt radially outwards.
  • the novel geometric relationship that can be achieved by the invention between the crown-shaped end face of the ring structure, the support disk of the housing and the pressing jaws causes the latter to be able to apply force during pressing even when the force is strongly off-center, in particular in the direction of the support disk not prone to tipping over.
  • the press jaws can be equipped in particular with press attachments, the pressing surfaces of which (possibly particularly short in the axial direction) are particularly close to the workpiece opening - provided in the support disk - without this causing the press jaws to tilt or "rock” during pressing " tend.
  • the fact that the number of axial projections - provided on the end face of the crown-shaped ring structure facing the support disk - corresponds to the number of pressing jaws is important from a static point of view, namely with regard to a favorable flow of force within the housing with particularly uniform removal of the pressure on the support disk of the housing exerted axial force in its jacket structure is particularly advantageous.
  • a first preferred development of the radial press according to the invention is characterized in that press attachments with pressing surfaces offset from the axial center of the counter surfaces are attached to the pressing jaws.
  • This can also be achieved by appropriately shaping press attachments, which are attached more or less centrally radially on the inside of the respective press jaw;
  • the press attachments are attached to the press jaws in the area of their ends facing the support disk. From the point of view of the size of the radial press, the statics, the precision/reproducibility and the handling when changing the press attachments, it is particularly advantageous if the press attachments are inserted into front-side receptacles of the press jaws formed by corresponding recesses.
  • the recesses into which the projections made on the ring structure enter are designed as openings.
  • the advantages set out above can be realized to a particularly pronounced extent.
  • the recesses only extend over a significant part (e.g. 70% to 95%) of the axial thickness of the support disk, so that the recesses are closed at the end by a layer of material. This can be advantageous in individual cases, for example if - in order to avoid contamination of the environment due to control surface and/or sliding surface abrasion - a housing surface that is as closed as possible is desired.
  • the ring structure comprises a ring structure base body and replaceable sliding plates, with the control surfaces being designed on the surface of the sliding plates.
  • the sliding plates can rest with their back facing away from the respective control surface on a support surface which is designed on the ring structure base body.
  • the ring structure further comprises control bodies, which are replaceable on the Ring structure base body are attached and have support surfaces on which the sliding plates rest with their back facing away from the respective control surface.
  • the support surfaces explained above (executed on the ring structure base body or on control bodies interchangeably attached to it) particularly preferably each comprise two support sections, which are delimited from one another by a recess lying between them.
  • Such a defined support for the sliding plates counteracts their wobbling, even - within certain limits - when the sliding plates wear.
  • the recess in question particularly preferably does not extend over the respective entire projection , but ends in front of the end face of the assigned projection;
  • the two support sections are connected to one another adjacent to the end face of the respective projection or merge into one another there.
  • control surfaces are flat.
  • the control surfaces each lie on a polygon with corners arranged between two adjacent pressing jaws.
  • press jaw guide ribs are particularly preferably provided on the ring structure, which laterally enclose or limit the control surfaces (at least locally).
  • the ring structure has separate control bodies (see above) which are interchangeably attached to a ring structure base body
  • press jaw guide ribs, each designed on the ring structure base body can be provided between two such control bodies, so that the control bodies are each inserted between two press jaw guide ribs, which protrude radially inwards (at least locally) over the control bodies, ie over the control surfaces designed on them, in order to guide the pressing jaws.
  • first guide elements e.g.
  • the ring structure comprises an annular piston which is sealingly guided in a press cylinder section designed in the jacket section of the housing and, together with this, delimits an annular press working space.
  • the press working space can be delimited by a housing closure ring arranged opposite the support disk, in particular if - according to a preferred development of the invention - the support disk and the jacket section are part of a one-piece housing base structure, in which a sleeve-shaped extension of the ring structure - which delimits the press working space radially on the inside - is guided in a sealing manner.
  • annular return stroke working space is particularly preferably arranged between the press working space and the support disk. This can be limited with particular advantage by a cylinder surface arranged on the outer circumference of the ring structure and guided in a sealing collar fixed to the housing.
  • the return stroke working space is delimited by the press cylinder section and an annular zone formed on the annular piston on its end face facing away from the press working space.
  • the hydraulic radial press shown in the drawing comprises, as its main components, a substantially rotationally symmetrical housing 1, a ring structure 2 which is displaceably guided therein along the axis Basic structure 5 with a jacket section 6 and an end-side annular support disk 7 as well as a housing locking ring 8 arranged opposite the support disk 7 in the jacket structure and fixed there.
  • the pressing jaws 3 are supported by means of two screws 9 attached to the support disk 7 Guide grooves 10 provided on the press jaws 3 are guided in a radially displaceable manner - on the support disk 7, with a friction-reducing bearing plate 12 being arranged between the end faces of the press jaws 3 and the support disk 7.
  • the pressing jaws 3 have sliding surfaces 13 on the radial outside. These form countersurfaces to the ring structure 2, which are inclined relative to the press axis .
  • the ring structure 2 has a ring-shaped, closed ring structure base body 15 and eight flat sliding plates 16 which are replaceably attached to it.
  • the sliding plates 16 are fixed to the ring structure base body 15 by means of a clamping ring 18 acting on the end edges 17 of the sliding plates 16.
  • the sliding plates 16 each lie - with their back facing away from the respective control surface 13 - on an assigned, also essentially flat support surface 19 of the ring structure base body 15.
  • the support surfaces 19 each include two support sections 20, 21, which are delimited from one another by a recess 22 between them.
  • the ring structure base body 15 On its end face 23 facing the support disk 7, the ring structure base body 15 is crown-shaped in that it has eight axial projections 24 there.
  • the support surfaces 19 serving to support the sliding plates each extend into the radial inner surface 25 of such a projection 24; and
  • the sliding plates 16 resting on the support surfaces 19 also extend accordingly, so that as a result each control surface 14 also extends into the radial inner surface 25 of the respectively assigned projection 24.
  • the depressions 22 can, in a modification to that in Fig. 3 shown embodiment, each end in front of the end face 26 of the associated projection 24.
  • the support disk 7 has eight recesses 28 corresponding to the projections 24 of the ring structure 2 and assigned to them, into which the projections 24 enter when the radial press is closed (cf. Fig. 2 ).
  • the recesses 28 are designed as openings 29, which each open into an opening 31 on the free end face 30 of the support disk 7.
  • a double-acting hydraulic drive is used to move the ring structure 2.
  • the ring structure 2 comprises an annular piston 32, which is sealingly guided in a cylinder section 33 designed in the jacket section 6 of the housing 1.
  • the cylinder section 33, the annular piston 32, the housing closure ring 8 and a sleeve-shaped extension 34 of the ring structure base body 15, which is guided sealingly therein, together delimit an annular press working space 35. This is via a press connection 40 actuable.
  • An annular return stroke working space 36 is arranged between the press work space 35 and the support disk 7.
  • the return stroke working space 36 can be acted upon via a return stroke connection 41.
  • the exemplary embodiment illustrated in the drawing is a so-called calibration press.
  • the pressing jaws 3 are designed in a specific manner in that they each have a recess 42 on their end face facing the support disk 7. This forms a receptacle 43 for a press attachment 45 inserted into it and fixed by means of the screw 44.
  • a press surface 47 - intended for interaction with the workpiece to be pressed - is provided radially on the inside on a narrow, inwardly directed collar 46.
  • the arrangement of the pressing surfaces 47 is clearly visible immediately adjacent to the support disk 7 and is therefore particularly offset from the axial center M of the counter surfaces 13 of the pressing jaws 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)

Claims (21)

  1. Presse radiale avec un boîtier (1) comportant une section d'enveloppe (6) et un disque de soutien (7) frontal de forme annulaire, une structure annulaire (2) guidée de façon mobile dedans le long d'un axe de pressage (X) et plusieurs mâchoires de pressage (3) disposées autour de l'axe de pressage (X), qui s'appuient guidées de façon radialement mobile sur le disque de soutien (7) et sur lequel la structure annulaire (2) agit au moyen des surfaces de commande (14) inclinées par rapport à l'axe de pressage (X), lesquelles s'appliquent aux surfaces opposées des mâchoires de pressage (3) exécutées comme des surfaces de glissement (13),
    caractérisée en ce que
    la structure annulaire (2) est exécutée en forme de couronne sur sa face avant (23) tournée vers le disque de soutien (7) avec un nombre de saillies axiales (24) correspondant au nombre de mâchoires de pressage (3), sachant que chaque surface de commande (14) s'étend dans la surface intérieure radiale (25) d'une saillie de même type (24) et sachant en plus que le disque de soutien (7) comporte des évidements (28) attribués aux saillies (24) dans lesquels pénètrent les saillies (24) lors de la fermeture de la presse radiale.
  2. Presse radiale selon la revendication 1, caractérisée en ce que les évidements (28) sont exécutés en tant que passages (29).
  3. Presse radiale selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que des embouts de pressage (45) avec des surfaces de pressage (47) déportées par rapport au centre axial (M) des surfaces opposées (13) sont placés sur les mâchoires de pressage (3).
  4. Presse radiale selon la revendication 3, caractérisée en ce que les embouts de pressage (45) sont placés sur les mâchoires de pressage (3) dans la zone de leurs extrémités tournées vers le disque de soutien (7).
  5. Presse radiale selon la revendication 4, caractérisée en ce que les embouts de pressage (45) sont insérés dans des logements frontaux (43) des mâchoires de pressage (3).
  6. Presse radiale selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la structure annulaire (2) comprend un corps de base de structure annulaire (15) et des tôles de coulissement remplaçables (16), sachant que les surfaces de commande (14) sont exécutées sur la surface supérieure des tôles de coulissement (16).
  7. Presse radiale selon la revendication 6, caractérisée en ce que les tôles de coulissement (16) reposent avec leur face arrière éloignée de la surface de commande respective (14) sur une surface d'appui (19), laquelle est exécutée sur le corps de base de la structure annulaire (15).
  8. Presse radiale selon la revendication 6, caractérisée en ce que la structure annulaire (2) comprend en plus des corps de commande, lesquels sont montés pouvant être changés sur le corps de base de structure annulaire (15) et comportent des surfaces d'appui sur lesquelles reposent les tôles de coulissement (16) avec leur face arrière à l'opposé de la surface de commande respective (14) .
  9. Presse radiale selon la revendication 7 ou la revendication 8, caractérisée en ce que les surfaces d'appui (19) comprennent respectivement deux sections de support (20, 21), lesquelles sont délimitées l'une de l'autre par une cavité (22) située entre elles.
  10. Presse radiale selon la revendication 9, caractérisée en ce que la cavité (22) débouche respectivement devant la face avant (26) de la saillie attribuée (24).
  11. Presse radiale selon l'une quelconque des revendications 1 à 10, caractérisée en ce que les surfaces de commande (14) se situent dans des plans perpendiculaires à l'axe de pressage (X) respectivement sur un polygone avec des coins disposés respectivement entre deux mâchoires de pressage (3) voisines l'une de l'autre.
  12. Presse radiale selon la revendication 11, caractérisée en ce qu'il s'agit d'une presse radiale monoétagée, sachant que les surfaces de commande (14) sont exécutées planes.
  13. Presse radiale selon la revendication 11, caractérisée en ce qu'il s'agit d'une presse radiale biétagée, sachant que les surfaces de commande (14) sont exécutées échelonnées.
  14. Presse radiale selon l'une quelconque des revendications 1 à 13, caractérisée en ce que des nervures de guidage de mâchoire de pressage (27) exécutées sur la structure annulaire (2) sont respectivement prévues entre deux mâchoires de pressage (3) .
  15. Presse radiale selon la revendication 14, caractérisée en ce que des premiers éléments de guidage de préférence des rainures de guidage (39), sont exécutés sur les nervures de guidage de mâchoire de pressage (27) dans lesquelles viennent en prise des deuxièmes éléments de guidage corrrespondant exécutés sur les mâchoires de pressage (3).
  16. Presse radiale selon l'une quelconque des revendications 1 à 15, caractérisée en ce que la structure annulaire (2) comprend un piston annulaire (32), qui est guidé hermétiquement dans une section de cylindre de pressage (33) exécuté dans la section d'enveloppe (6) du boîtier (1) et limite en commun avec celle-ci un espace de travail de pressage (35) de forme annulaire.
  17. Presse radiale selon la revendication 16, caractérisée en ce qu'un espace de travail de course de retour (36) de forme annulaire est disposé entre l'espace de travail de pressage (35) et le disque de soutien (7), qui est limité par une surface cylindrique (38) disposée sur la périphérie extérieure de la structure annulaire (2), guidée dans un collet d'étanchéité (37) fixe au boîtier.
  18. Presse radiale selon la revendication 17, caractérisée en ce que la section d'enveloppe (6) du boîtier (1) comporte une ouverture d'évacuation des déchets entre le collet d'étanchéité (44) et le disque de soutien (7) .
  19. Presse radiale selon l'une quelconque des revendications 16 à 18, caractérisée en ce que l'espace de travail de pressage (35) est limité par une bague de fermeture de boîtier (8) disposée en face du disque de soutien (7) et un prolongement (34) en forme de manchon guidé hermétiquement dans celle-ci de la structure annulaire (2).
  20. Presse radiale selon l'une quelconque des revendications 1 à 19, caractérisée en ce que le disque de soutien (7) et la section d'enveloppe (6) font partie d'une structure de base de boîtier (5) monobloc.
  21. Presse radiale selon l'une quelconque des revendications 1 à 20, caractérisée en ce que des éléments de guidage (11) remplaçables coopérant avec les mâchoires de pressage (3) sont placés sur le disque de soutien (7).
EP21840480.4A 2021-04-12 2021-12-15 Presse radiale Active EP4093601B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021109039.3A DE102021109039B4 (de) 2021-04-12 2021-04-12 Radialpresse
PCT/EP2021/085943 WO2022218565A1 (fr) 2021-04-12 2021-12-15 Presse radiale

Publications (3)

Publication Number Publication Date
EP4093601A1 EP4093601A1 (fr) 2022-11-30
EP4093601C0 EP4093601C0 (fr) 2024-02-07
EP4093601B1 true EP4093601B1 (fr) 2024-02-07

Family

ID=79316721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21840480.4A Active EP4093601B1 (fr) 2021-04-12 2021-12-15 Presse radiale

Country Status (5)

Country Link
US (1) US11911990B2 (fr)
EP (1) EP4093601B1 (fr)
CN (1) CN117120251A (fr)
DE (1) DE102021109039B4 (fr)
WO (1) WO2022218565A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999405A (en) 1957-12-24 1961-09-12 Smith Corp A O Apparatus for radially compressing articles
DE1296934B (de) * 1964-10-27 1969-06-04 Rheinmetall Gmbh Hydraulische Spannvorrichtung fuer Rohre, Stangen od. dgl., insbesondere bei Stauchpressen
DE2844475C2 (de) 1978-10-12 1983-09-29 Peter Ing.(grad.) 6380 Bad Homburg Schröck Radialpresse für Werkstücke mit zylindrischer Außenfläche
AUPQ886200A0 (en) * 2000-07-19 2000-08-10 Betaswage Pty Ltd Hydraulic swage press
DE10149924A1 (de) * 2001-10-10 2003-04-30 Uniflex Hydraulik Gmbh Radialpresse
WO2005077566A1 (fr) 2004-02-16 2005-08-25 Betaswage Pty Ltd Perfectionnements apportés à des matrices d'emboutissage
AU2006230741A1 (en) * 2006-10-20 2008-05-08 Betaswage Pty Ltd Die Element Changing Devices
AU2011200404B2 (en) 2010-02-02 2016-01-21 Betaswage Pty Ltd Hydraulic Swage Press
US9283613B2 (en) 2012-11-01 2016-03-15 Betaswage Pty Ltd Indexing die shoes in a swage press
DE102016106650B4 (de) 2016-04-12 2021-09-16 Uniflex-Hydraulik Gmbh Radialpresse

Also Published As

Publication number Publication date
CN117120251A (zh) 2023-11-24
EP4093601A1 (fr) 2022-11-30
EP4093601C0 (fr) 2024-02-07
DE102021109039B4 (de) 2023-02-23
US20230405956A1 (en) 2023-12-21
DE102021109039A1 (de) 2022-10-13
WO2022218565A1 (fr) 2022-10-20
US11911990B2 (en) 2024-02-27

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