EP4093601A1 - Presse radiale - Google Patents

Presse radiale

Info

Publication number
EP4093601A1
EP4093601A1 EP21840480.4A EP21840480A EP4093601A1 EP 4093601 A1 EP4093601 A1 EP 4093601A1 EP 21840480 A EP21840480 A EP 21840480A EP 4093601 A1 EP4093601 A1 EP 4093601A1
Authority
EP
European Patent Office
Prior art keywords
press
radial
press according
radial press
ring structure
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
EP21840480.4A
Other languages
German (de)
English (en)
Other versions
EP4093601B1 (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 EP4093601B1 publication Critical patent/EP4093601B1/fr
Publication of EP4093601C0 publication Critical patent/EP4093601C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 to a radial press with a housing having a casing section and an end-side annular support disk, a ring structure guided in it so that it can be displaced along a pressing axis and a plurality of pressing jaws arranged around the press axis, which are supported on the support disk in a radially displaceable manner and on which the ring structure is guided by means relative to the pressing axis acts inclined control surfaces, which rest on designed as sliding surfaces of the press jaws.
  • the present invention is aimed at providing a radial press of the generic type that is once again and further improved in terms of practicality compared to the prior art presented above.
  • One of the relevant aspects relates to a particularly favorable relationship between the three variables: effective pressing force, maximum pressing path (maximum possible radial movement of the pressing jaws) and overall length of the radial press.
  • a further aspect of practical suitability is the suitability of the radial press in question for tasks outside of the usual standard applications, ie a large possible range of applications.
  • the annular structure is crown-shaped on its end face facing the support disk with axial projections, each control surface extending into the radial inner surface of such a projection and also being the support disc has recesses associated with the projections, into which the projections enter when the radial press is closed.
  • the ratio of effective pressing force, maximum pressing path and overall length of the radial press to one another can be optimized in a surprisingly simple manner to a significant extent. Because with - compared to generic radial presses according to the prior art - unchanged overall length can be significantly increased in radial presses according to the invention, the effective lengths of the control surfaces. Depending on the individual design, the maximum pressing path and/or the maximum pressing force can be increased if the angle of inclination of the control surfaces remains unchanged.
  • the novel geometric relationship between the crown-shaped end face of the ring structure, the supporting disk of the housing and the pressing jaws that can be achieved by the invention has the effect that the latter, even with a strongly eccentric force application, in particular a force application that is strongly displaced from the center in the direction of the supporting disk, during pressing not tend to tilt.
  • the pressing jaws can be equipped in particular with pressing attachments whose pressing surfaces (possibly particularly short in the axial direction) are particularly close to the workpiece opening—provided in the support disk—without thereby damaging the pressing jaws during pressing tend to tilt or "see-saw". This makes the radial press according to the invention particularly suitable, for example, for use as a so-called "calibrating press”.
  • a first preferred further development of the radial press according to the invention is characterized in that pressing attachments are attached to the pressing jaws with pressing surfaces offset relative to the axial center of the mating surfaces.
  • press attachments which are attached more or less centrally and 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 disc. 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 number of frontal projections of the ring structure is less than the number of pressing jaws, for example by two control surfaces extending into a common projection.
  • the ring structure would have only four front-side projections.
  • the number of projections corresponds to the number of pressing jaws.
  • the recesses into which the projections made on the ring structure enter are made 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 off at the end by a layer of material. This can be advantageous in individual cases, for example if—to avoid contamination of the environment through abrasion of control surfaces and/or sliding surfaces—a housing surface that is as closed as possible is desired.
  • the ring structure comprises a ring structure base body and exchangeable sliding plates, with the control surfaces being implemented on the surface of the sliding plates.
  • the sliding plates can rest with their rear side facing away from the respective control surface on a support surface, which is designed on the ring structure base body.
  • the ring structure also includes control bodies which are attached to the ring structure base body in an exchangeable manner and have support surfaces on which the sliding plates rest with their rear side facing away from the respective control surface.
  • the support surfaces explained above particularly preferably each comprise two support sections, which are separated from one another by a depression lying between them. Such a defined support of the sliding plates counteracts their wobbling, and also - within certain limits - with wear of the sliding plates.
  • the said depression particularly preferably does not extend over the respective entire projection , but runs out in front of the end face of the associated projection; in this case, the two support sections are connected to one another adjacent to the end face of the respective projection or merge into one another there.
  • the control surfaces are flat. Particularly preferably, in planes perpendicular to the pressing axis, 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 delimit the control surfaces (at least locally).
  • the ring structure has separate control bodies (see above) that are interchangeably attached to a ring structure base body
  • press jaw guide ribs 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 provided on them, in order to guide the pressing jaws.
  • first guide elements e.g.
  • the annular structure comprises an annular piston which is guided in a sealing manner in a press cylinder section implemented in the jacket section of the housing and together with this delimits an annular press working chamber.
  • the pressing working chamber can be delimited by a housing locking ring arranged opposite the supporting disk, particularly if - according to a preferred development of the invention - the support disk and the jacket section are part of a one-piece basic housing structure a sleeve-shaped extension of the annular 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 pressing working space and the support disk.
  • This can be delimited with particular advantage by a cylinder surface which is arranged on the outer circumference of the ring structure and is 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 remote from the pressing working space.
  • Fig. 1 is an axial section through a after
  • Fig. 2 is an axial section through the radial press of FIG. 1 with the tool completely closed and
  • the main components of the hydraulic radial press shown in the drawing are an essentially rotationally symmetrical housing 1, a ring structure 2 guided therein so that it can be displaced along the axis X, and a pressing tool 4 having eight pressing jaws 3 arranged around the pressing axis X.
  • the housing 1 comprises a one-piece housing Basic structure 5 with a casing section 6 and an end-side annular support disk 7 as well as one arranged opposite the support disk 7 in the casing structure and fixed there Housing locking ring 8.
  • the pressing jaws 3 are supported on the supporting disk 7 by means of guide elements 11 (link blocks) which are attached to the supporting disk 7 by means of the two screws 9 and which interact with the guide grooves 10 provided on the pressing jaws 3 in a radially displaceable manner, with between a friction-reducing bearing plate 12 is arranged on the end faces of the pressing jaws 3 and the support disk 7 .
  • the pressing jaws 3 have sliding surfaces 13 radially on the outside.
  • the ring structure 2 has a ring structure base body 15 which is closed in the form of a ring and eight flat sliding plates 16 which are attached to it in an exchangeable manner.
  • the sliding plates 16 are fixed to the ring structure base body 15 by means of a clamping ring 18 acting on end-side bevels 17 of the sliding plates 16.
  • the sliding plates 16 each lie - with their rear side 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 comprise two support sections 20, 21, which are delimited from one another by a depression 22 lying between them.
  • the annular structure base body 15 On its end face 23 facing the support disk 7 , the annular structure base body 15 is crown-shaped in that it has eight axial projections 24 there.
  • the supporting 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 associated projection 24 .
  • the depressions 22 can, in a modification to the one shown in Fig.
  • FIG. 3 shows the press jaw guide ribs 27 on the ring structure base body 15 - in each case between two adjacent support surfaces 19 - with the guide grooves 39 provided on them, which are intended to interact with corresponding guide projections provided laterally on the press jaws.
  • the support disk 7 has eight corresponding to the projections 24 of the ring structure 2, associated recesses 28, in which the projections 24 enter when closing the radial press (see FIG. 2).
  • the recesses 28 are in the form of 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 annular structure 2 comprises an annular piston 32 which is guided in a sealing manner in a cylinder section 33 implemented in the jacket section 6 of the housing 1 .
  • An annular return stroke work space 36 is arranged between the press work space 35 and the support disk 7 . This is delimited by the cylinder section 33 - which also delimits the pressing working chamber 35, an annular zone formed on the annular piston 32 on its end face remote from the pressing working chamber 35, a sealing collar 37 fixed to the housing and a sealing collar 37 guided in this on the outer circumference of the ring structure base body 15 arranged cylinder surface 38.
  • the return stroke working chamber 36 can be pressurized via a return stroke connection 41.
  • the embodiment illustrated in the drawing is a so-called calibration press.
  • the pressing jaws 3 are designed in a specific way in that they each have a recess 42 on their end face facing the supporting 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 attachment 45 On the press attachment 45, on a narrow, inwardly directed collar 46, a pressing surface 47 is provided radially on the inside—for interacting with the workpiece to be pressed.
  • the arrangement of the pressing surfaces 47 is clearly visible immediately adjacent to the support disc 7 and thus in particular greatly offset from the axial center M of the mating surfaces 13 of the pressing jaws 3 .
  • a modification of the radial press shown is also easily possible in that on the (modified) pressing jaws 3 in a conventional manner known as such, a pressing attachment (with a pressing surface of any other design, depending on the pressing task ) is attached.

Landscapes

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

Abstract

Le boîtier (1) d'une presse radiale présente une section de carter (6) et un disque de support de face d'extrémité annulaire (7). Une structure annulaire (2) est guidée de manière mobile dans le boîtier (1) le long d'un axe de presse (X), et de multiples mâchoires de presse (3) disposées autour de l'axe de presse (X) sont soutenues sur le disque de support (7) de manière à être guidées de manière mobile dans la direction radiale. La structure annulaire (2) agit sur les mâchoires de presse (3) au moyen de surfaces de commande (14) qui sont inclinées par rapport à l'axe de presse (X) et qui reposent sur des contre-surfaces de mâchoires de presse (3) conçues sous la forme de surfaces de glissement (13). La face d'extrémité (23) de la structure annulaire (2) tournée vers le disque de support (7) est conçue avec des saillies axiales (24). Chaque surface de commande (14) fait saillie dans la surface interne radiale (25) d'une telle saillie (24), et le disque de support (7) présente des évidements (28) qui sont appariés aux saillies (24) et dans lesquels entrent les saillies (24) lorsque la presse radiale est fermée.
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 true EP4093601A1 (fr) 2022-11-30
EP4093601B1 EP4093601B1 (fr) 2024-02-07
EP4093601C0 EP4093601C0 (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)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024135847B3 (de) * 2024-12-03 2025-12-31 Uniflex - Hydraulik GmbH Verfahren zur mehrphasigen Radialumformung eines Werkstücks mittels einer maschinellen Radialpresse

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
US7856861B2 (en) 2004-02-16 2010-12-28 Fred Van Essen Swage presses
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
EP4093601B1 (fr) 2024-02-07
US20230405956A1 (en) 2023-12-21
CN117120251A (zh) 2023-11-24
DE102021109039B4 (de) 2023-02-23
US11911990B2 (en) 2024-02-27
DE102021109039A1 (de) 2022-10-13
EP4093601C0 (fr) 2024-02-07
WO2022218565A1 (fr) 2022-10-20

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