EP2167257B1 - Ringpresse - Google Patents

Ringpresse Download PDF

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Publication number
EP2167257B1
EP2167257B1 EP08773813A EP08773813A EP2167257B1 EP 2167257 B1 EP2167257 B1 EP 2167257B1 EP 08773813 A EP08773813 A EP 08773813A EP 08773813 A EP08773813 A EP 08773813A EP 2167257 B1 EP2167257 B1 EP 2167257B1
Authority
EP
European Patent Office
Prior art keywords
pressing
elements
ring press
ring
rollers
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.)
Not-in-force
Application number
EP08773813A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2167257A1 (de
Inventor
Mathias Bihler
Johann Köpf
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.)
Otto Bihler Handels Beteiligungs GmbH
Original Assignee
Otto Bihler Handels Beteiligungs 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 Otto Bihler Handels Beteiligungs GmbH filed Critical Otto Bihler Handels Beteiligungs GmbH
Priority to PL08773813T priority Critical patent/PL2167257T3/pl
Publication of EP2167257A1 publication Critical patent/EP2167257A1/de
Application granted granted Critical
Publication of EP2167257B1 publication Critical patent/EP2167257B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers
    • B21J7/145—Forging machines working with several hammers the hammers being driven by a rotating annular driving member

Definitions

  • the present invention relates to a ring press according to the preamble of claim 1.
  • Ring presses are used for the production of dimensionally accurate sleeves, such as plain bearings, small motor housings, chain sleeves, chain rollers and the like. These sleeves are bent from strip material in a first step using a bending tool. This is usually a bending machine used. However, the roundness of the sleeve produced by bending does not yet have the desired accuracy within the tolerances of the finished product.
  • Ring presses according to the preamble of claim 1 are known and have, for example, four pairs each orthogonal to each other arranged pressing elements. At their radially outer ends, these pressing elements comprise roller-type or ball-type force transmission elements which are acted upon by pressure generating elements rotatable in the circumferential direction relative to the pressing elements when the pressing elements are in their pressing position.
  • the movement of the pressing elements in the radial direction is, for example, by a on the respective role of a pressing element passing past, inclined pressure piece whose inclination is designed such that upon further rotation in the circumferential direction a greater pressure is exerted on the pressing element.
  • ring presses are known in which the pressure generating arrangement acts on the pressing elements via a hinge connection, in particular a kind of double ball joint between pressure generating arrangement and pressing element.
  • the pressure generating arrangement and the pressing elements are connected to one another such that, depending on the rotational position of the pressure generating arrangement relative to the pressing elements, the pressing element is pressed into its pressing position or pulled into its release position.
  • This type of ring press requires reciprocation of the pressure generating assembly to move the pressing members between the release position and the press position.
  • annular press having a plurality of rollers that are unrolled to generate pressure over a continuous circumferential path formed by the respective radially outer edges of the press members.
  • a continuous circumferential path formed by the radially outer edges of the pressing elements allows continuous rolling movement of the rollers in one direction of rotation.
  • a reciprocating movement of the pressure generating arrangement relative to the pressing elements is thus not required.
  • pressure is transmitted from at least one of the rollers to a corresponding associated pressing element.
  • the object of the invention is to provide a ring press that meets the above tolerance requirements.
  • the circumferential path has a profile which is regular in the circumferential direction and has alternating radial elevations and countersinkings, such that all rolling elements are moved synchronously into the pressing position when the rollers roll over an elevation.
  • Such a profile of the circumferential path allows for rolling the rollers in one direction of rotation also a repeated, repeated pressure generation on the workpiece.
  • the profile can be designed such that it always has the same pressure generating characteristic regardless of the direction of rotation of the pressure generating arrangement.
  • the elevations and depressions of the profile are designed to be direction-dependent, for example, such that the transition from a reduction in a survey is relatively weakly inclined to build up the pressure continuously and relatively slowly, and that the transition from the survey in the next reduction is relatively steep, so that the pressure on the workpiece quickly decreases.
  • the profile can also be designed exactly the opposite, in order to obtain the highest pressure abruptly and then reduce it at the same rotational speed of the rollers slower.
  • the pressure generating arrangement preferably has a race on whose radial inner side the rollers roll off.
  • the race, the rollers and the peripheral track thus form a kind of rolling bearing in which the race and the rollers roll relative to the circumferentially fixed pressing elements.
  • the rollers are thus guided radially inward and can be rolled out over 360 °.
  • This construction also has the advantage that the ring press is very compact.
  • the raceway is tapered on its radial outer side in the axial direction and abuts against the inside of a clamping ring of the pressure generating arrangement which is of opposite conical configuration in the axial direction.
  • the clamping ring is preferably connected to a drive ring of the pressure generating arrangement, in particular screwed. Further, it is proposed in this context that the clamping ring in the axial direction relative to the race and the drive ring is adjustable to adjust the pressure acting on the workpiece.
  • the two conical, superimposed peripheral surfaces of the race and the clamping ring allow by axial movement of the clamping ring on the axially fixed race adjusting the radial direction acting on the pressing elements and thus the workpiece pressure.
  • the adjustability can be in a range up to 0, 10 mm in the radial direction.
  • slot-like openings are formed in the pressing elements, in which stationary guide elements are received with respect to the pressing elements, which guide the radial movement of the pressing elements to the center of the dome or the ring press.
  • rollers do not abut each other during rolling between the race and the continuous peripheral edge, it is proposed that between two circumferentially adjacent rollers each have a spacer is provided which is fixed to the race.
  • the pressure generating arrangement, the pressing elements and the guide elements are supported immovably in the axial direction and are in particular on a base plate.
  • the guide elements are attached to the base plate, preferably screwed.
  • the pressing elements and the guide elements in the axial direction on the base plate is preferably a Cover plate or a flange provided, which is or is screwed to the base plate, said screw particularly preferably passes through the guide elements and they are thus also fixed.
  • the gearbox in particular has a pinion attached to a shaft of the electric motor which meshes with teeth formed on the outer circumference of the drive ring of the pressure generating arrangement.
  • the electric motor may be mounted, for example, on the other side of the base plate supporting the pressure generating assembly, the pressing elements and the guide elements, the shaft of the electric motor passing through a corresponding bore in the base plate, so that the meshing between the pinion mounted on the shaft and the drive ring is possible.
  • the pressing elements are movable by return means from the pressing position to the release position when the rollers are in the subsidence of the profile of the continuous circumferential path ,
  • the elevations and depressions in the profile of the continuous circumferential path are preferably arranged such that the elevations and depressions are arranged in the profile of the continuous circumferential path such that in each case a number n elevations are formed completely on the outer radial edge of each pressing element, that a number n 1 depressions are completely formed on each pressing element and that the still required to complete the profile reductions are formed in each case half in the circumferential direction directly adjacent pressing elements.
  • the ring press 24 comprises rollers and eight pressing elements, so that in the pressing position in each case three rollers act on a pressing element.
  • the number of rollers is equal to the number of protrusions per pressing element multiplied by the number of pressing elements, and that the number of counterbores is equal to the number of rollers or the total number of protrusions.
  • the profile begins along the circumferential direction with a half countersink, then join the three surveys with each intervening complete subsidence and the profile is completed after the third survey by another half reduction.
  • the respective half-sinks in the transition region between the two pressing elements a complete reduction, so that over the entire circumference of the circumferential path the same number of complete elevations and full subsidence is formed.
  • a base plate 10 can be seen on which a pressure generating arrangement 12 is supported in the axial direction of a rotation axis D of the ring press.
  • the pressure generating assembly 12 is driven via a pinion 14, which rotates counterclockwise with respect to the viewing direction in this embodiment, wherein the rotational movement of the pinion 14 via an in Fig. 2 shown toothing 15 is transmitted to a drive ring 16 of the pressure generating arrangement.
  • the drive ring 16 is thus driven in the clockwise direction and transmits this direction of rotation to the other in the circumferential direction U movable elements of the pressure generating arrangement 12th
  • a clamping ring 18 which is secured by means of screws 20 on the drive ring 16 extends.
  • the drive ring 16 has, based on the cross-sectional view of Fig. 2 on its right side a radially inwardly extending projection 22 through which the screws 20 are passed.
  • This radial Projection 22 forms together with the base plate 10 a receiving space in which a race 24 and rollers 26 are received.
  • a plurality of pressing elements 28 which are arranged in the circumferential direction next to each other and in the example at their radial outer end portions 29 and at their radial inner end portions 31 in the circumferential direction touch ( Fig. 4 . 5 ).
  • the pressing elements 28 have a regular profile, which comprises alternately radial elevations 32 and countersinks 34, which is shown in the enlarged, perspective illustration of a single pressing element according to FIG Fig. 5 is apparent.
  • the pressing elements 28 have an oblong hole-shaped opening 36 through which a guide element 38 passes.
  • This guide element 38 has a length in the radial direction which is slightly smaller than the length of the oblong hole 36, so that the pressing elements 28 can move in the radial direction relative to the stationary guide element 38.
  • the guide elements 38 rest on the rear side on the base plate 10 and are held by means of a resting on the front of the drive ring 16 cover plate 40 in the axial direction.
  • the cover plate 40 and the guide elements 38 are fixed by common screws 42 on the base plate 10, wherein the guide elements are also received in recesses.
  • the pressing elements 28 are moved by the rolling of the rollers 26 on the continuous circumferential path 46 in the radial direction R to a mandrel 48, on which a workpiece to be machined, in particular a sleeve 50, is pushed.
  • the sleeve 50 is acted upon and pressurized by the radial inner edges 52 of the pressing elements 28 which each form a circular arc segment, so that the sleeve 50 is pressed into its final shape between the pressing elements 28 and the mandrel 50.
  • the case generated by the ring press pressures are very high and amount to about 100 tons or more, which is a multiple, about 4- to 6 times, the pressure that can be generated by conventional ring presses.
  • the particular metallic sleeve material usually comes in the flow area, so that an optimal and precise shaping is possible.
  • the pressing elements 28 are in a release position when the rollers 26 are located in a countersink 34. In this position, a sufficient distance between the mandrel 48 and the radial inner edges 52 of the pressing elements 28 is given, which allows the feeding of a workpiece or the release of an already pressed workpiece 50.
  • the pressing elements 28 are pressed into their pressing position in which they press a sleeve 50 concentrically against the mandrel 48.
  • the mandrel 48 includes in its center the axis of rotation D of the pressure generating arrangement 12, in particular the circumferentially moving elements drive ring 16, clamping ring 18 and race 24.
  • the mandrel 48 in the release position of the pressing elements 28 is also rotatable about the axis D together with the In this way, those areas of the sleeve can be brought into shape, which lie in a first pressing step in the circumferential direction exactly between two adjacent pressing elements 28. It can thus be bridged other pressure points and joints with multiple pressing.
  • the supplied lubricant is used in this embodiment as a return means for the pressing elements 28. If this by rolling the Rollers 26 are placed over the elevations 32 in the radial direction to the axis of rotation D out under pressure, lubricant, which is located in a formed between the slot 36 and guide member 38 intermediate space or chamber 60, also pressurized. This hydraulic pressure allows the press members 28 to be returned radially outward when the rollers 26 are in a counterbore 34 of the continuous circumferential path 46.
  • FIG. 3 Upper part of the pressure generating arrangement is from the Fig. 3 it can be seen that the clamping ring 18 and the race 24 have conical contact surfaces 62 and 64, respectively. Since the clamping ring 18 by means of the screw 20 with respect to the race 24 and the drive ring 16 in the axial direction is adjustable, can be adjusted by the interaction of the inclined contact surfaces 62, 64, a bias on the rollers and thus the pressing elements. This adjustability makes it possible to make radial adjustments in the range up to about 0.10 mm.
  • the clamping ring 18 and the race 24 in principle form a wedge gear in which the rotational movements transmitted by the pinion 14 to the drive ring 16 by means of adhesion to the rollers 26 is transmitted.
  • spacers 66 can be seen, which are mounted on the race 24. These spacers 66 hold the rollers 26 equidistant from one another and prevent the rollers 26 from approaching or being removed relative to one another when rolling in the circumferential direction. This ensures that always all rollers 26 are arranged simultaneously on a survey 32 or in a reduction 34 of the circumferential path 46, so that the pressing elements 28 are operated synchronously in the radial direction R.
  • the elevations 32 which in the exemplary embodiment have the same gradients from a countersink 34 and down to a countersink 34, could also be designed differently.
  • one of the slopes could be steeper be executed when a sudden pressure increase or decrease is desired.
  • a rapid or slow pressure increase or decrease may also be controlled via the rotational speed of the pressure generating arrangement by means of a control unit of the ring press or a production machine unit comprising the ring press, not shown and explained here.
  • the pressing elements 28 have between the radially outer and radially inner end portions 29, 31 a recess 33 which serves to receive and distribute lubricant. Furthermore, the contact surfaces between the pressing elements 28 are reduced in the circumferential direction by this recess 33.
  • the number of times a workpiece 50 is pressurized during processing depends on the circulation rate of the pressure generating assembly. For example, in the embodiment shown, an eighth-turn of the pressure generating arrangement 12 leads to a three-times pressurization of the sleeve 50, since during such eighth rotation, the rollers 26 are unrolled over three elevations 32.
  • rollers 26 and as many elevations 32 and counterbores 34 are formed on the circumferential path 30.
  • the remaining depressions 34 ' are each formed by two adjacent pressing elements 28, on each of which half a countersink 34' is formed. It is of course possible to change both the number of pressing elements and the number of rollers and the number of elevations and reductions on the circumferential path. It is essential in such an adaptation that the rolling movement of the rollers over the elevations and depressions of the circumferential path enables the synchronous actuation of the pressing elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
EP08773813A 2007-07-06 2008-07-02 Ringpresse Not-in-force EP2167257B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08773813T PL2167257T3 (pl) 2007-07-06 2008-07-02 Prasa pierścieniowa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007031482A DE102007031482A1 (de) 2007-07-06 2007-07-06 Ringpresse
PCT/EP2008/005401 WO2009007048A1 (de) 2007-07-06 2008-07-02 Ringpresse

Publications (2)

Publication Number Publication Date
EP2167257A1 EP2167257A1 (de) 2010-03-31
EP2167257B1 true EP2167257B1 (de) 2013-02-27

Family

ID=39852355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08773813A Not-in-force EP2167257B1 (de) 2007-07-06 2008-07-02 Ringpresse

Country Status (5)

Country Link
EP (1) EP2167257B1 (es)
DE (1) DE102007031482A1 (es)
ES (1) ES2401399T3 (es)
PL (1) PL2167257T3 (es)
WO (1) WO2009007048A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009035205A1 (de) 2009-07-29 2011-02-10 Otto Bihler Handels-Beteiligungs-Gmbh Arbeitsmaschine, insbesondere Draht- oder Bandbiegemaschine
DE102009042441A1 (de) 2009-09-22 2011-03-31 Otto Bihler Handels-Beteiligungs-Gmbh Ringpresse mit Torque-Motor
DE102009042442A1 (de) 2009-09-22 2011-03-31 Otto Bihler Handels-Beteiligungs-Gmbh Ringpresse mit hydraulischer Spannringverstellung
LT6174B (lt) 2013-10-09 2015-06-25 Uab "Elmo Technologijos" Apšvietimo sistema, naudojant dienos šviesą
DE102016207062A1 (de) 2016-04-26 2017-10-26 Otto Bihler Handels-Beteiligungs-Gmbh Presse mit doppelnockenübersetzt angetriebenem Presselement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR793147A (fr) * 1935-07-30 1936-01-16 Chanay & Maitrot Perfectionnement aux machines à rétreindre
FR857899A (fr) * 1939-07-17 1940-10-03 Chanay & Maitrot Perfectionnement aux machines à rétreindre
DE2547821A1 (de) * 1975-10-25 1977-04-28 Erich Ribback Rundhaemmermaschine
DE2834360C3 (de) * 1978-08-04 1981-03-19 Fritz Werner Industrie-Ausrüstungen GmbH, 6222 Geisenheim Positioniervorrichtung für das Knetwerk einer Rundknetmaschine in Ringläuferbauart
JP2887513B2 (ja) * 1990-09-07 1999-04-26 株式会社ジャロック スウエージング加工装置
DE4206260C2 (de) * 1992-02-28 1994-03-03 Erbsloeh Julius & August Vorrichtung zum Umformen mit mindestens einem Stößelhammer
DE19954210B4 (de) * 1999-11-11 2008-04-03 Volkswagen Ag Rundknetmaschine
DE10149924A1 (de) * 2001-10-10 2003-04-30 Uniflex Hydraulik Gmbh Radialpresse

Also Published As

Publication number Publication date
PL2167257T3 (pl) 2013-08-30
EP2167257A1 (de) 2010-03-31
DE102007031482A1 (de) 2009-01-08
ES2401399T3 (es) 2013-04-19
WO2009007048A1 (de) 2009-01-15

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