EP2298468A2 - Presse annulaire dotée d'un moteur à couple - Google Patents

Presse annulaire dotée d'un moteur à couple Download PDF

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Publication number
EP2298468A2
EP2298468A2 EP20100161861 EP10161861A EP2298468A2 EP 2298468 A2 EP2298468 A2 EP 2298468A2 EP 20100161861 EP20100161861 EP 20100161861 EP 10161861 A EP10161861 A EP 10161861A EP 2298468 A2 EP2298468 A2 EP 2298468A2
Authority
EP
European Patent Office
Prior art keywords
ring
ring press
pressing
drive
rotor
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
EP20100161861
Other languages
German (de)
English (en)
Other versions
EP2298468A3 (fr
EP2298468B1 (fr
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
Publication of EP2298468A2 publication Critical patent/EP2298468A2/fr
Publication of EP2298468A3 publication Critical patent/EP2298468A3/fr
Application granted granted Critical
Publication of EP2298468B1 publication Critical patent/EP2298468B1/fr
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, comprising a mandrel, via which an annular workpiece to be pressed can be fed in the axial direction of the ring press and on which the workpiece is supported, a plurality of radially movable movable pressing elements, with which pressure on the workpiece is exercisable, and a in the circumferential direction relative to the pressing elements rotatable pressure generating arrangement, the rotation of which relative to the pressing elements, the pressing elements are moved from a release position to a pressing position, wherein the pressure generating arrangement comprises a plurality of rollers which is formed to generate pressure via a respective radial outer edges of the pressing elements unwinding continuous circumferential path and wherein the pressure generating arrangement comprises a race on the radial inside of which roll off the rollers.
  • Such a ring press is from the DE 10 2007 031 482 A1 known.
  • the pressure generating arrangement shown there is driven via a gear transmission, in particular a pinion, which meshes with a drive ring, wherein the pinion is connected by means of a shaft with an electric motor.
  • the sleeve can be centered at the beginning of the application of pressure by means of the pressing elements relative to the mandrel.
  • the sleeve may initially be held with its inner circumference at a small distance from the outer circumference of the mandrel, since it is held or clamped on its outer circumference by the pressing elements.
  • pressure increase is a plastic deformation of the sleeve, wherein the sleeve material is displaced towards the mandrel by radially moving the pressing elements towards the mandrel and then possibly rests against this.
  • the plastic deformation generated in particular can lead to a reduction of the inner and outer diameter of the sleeve, wherein the thickness of the sleeve remains substantially the same as before pressing in the ring press or only slightly reduced.
  • Such a pressing operation enables the production of sleeves with high dimensional accuracy and precision.
  • the object of the invention is to develop a ring press of the known type such that the above disadvantages can be avoided.
  • the ring press comprises a drive which is designed such that it can be coupled or coupled to the raceway without transmission, in order to normally transmit the speed generated by the drive or the torque generated unchanged to the raceway.
  • Such transmission-free power transmission of the drive power to the race avoids losses in a translating gear such that the movement of the race is substantially identical to the movement of the drive.
  • a certain speed per minute or a certain partial rotation in one or the other direction can be precisely controlled and transmitted to the pressure generating device, in particular the race.
  • Transmission-free in this context is to be understood that no rotational movements transmitting gears or the like. Are present, which translate to a reduction of the drive generated rotational movement. Transmission-free should not exclude, however, that between the drive and the thus coupled raceway further, be offset by the drive in a similar manner rotatable components, which in particular produce the coupling between the race and the drive.
  • the drive is an electrically driven torque motor with a radially inner, forming a hollow shaft rotor and an outer stator.
  • the race can be coupled or coupled to the rotor.
  • Torque motors are high torque optimized large servo motors where the rotor is normally designed as a hollow shaft.
  • the torque motor can be used as a gearless direct drive of the race, which can be generated by the torque motor high torques at relatively low speeds.
  • These properties are very important for a ring press according to the present invention, since relatively large sleeves are made with a diameter of up to 15 cm, wherein the material to be processed has a thickness of several millimeters.
  • the use of a torque motor as a drive for the ring press allows a compact design, since the drive is installed concentrically around the pressure generating arrangement.
  • the raceway is preferably on its radial outer side in the axial direction designed conical and is located on the inside of an axially opposite conical clamping ring of the pressure generating arrangement on.
  • the clamping ring is preferably connected to a rotor connected to the drive ring of the pressure generating arrangement or to the rotor, in particular screwed.
  • the clamping ring in the axial direction relative to the race and the drive ring or rotor is adjustable to adjust the pressure acting on the race and thus on the workpiece pressure.
  • the clamping ring can also be referred to as a collar.
  • the clamping ring is frictionally received between the drive ring or rotor and the raceway.
  • the rotational movement of the rotor on the raceway transmitting components of the pressure generating arrangement are received substantially free of play and there is no slippage between the individual ring components and the rotor during normal operation of the ring press.
  • the frictional connection of the clamping ring is releasable, preferably by establishing hydraulic pressure between the friction surfaces of the clamping ring, the race and the drive ring or rotor.
  • the circumferential path of the ring press on a regular profile in the circumferential direction with alternating radial elevations and reductions, such that when rolling the rollers over a survey all the pressing elements are moved synchronously in the pressing position.
  • the pressing elements In order to enable the radial advancing movement of the pressing elements, it is proposed that 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.
  • the pressure generating arrangement, the pressing elements and the guide elements are preferably supported immovably in the axial direction. They are in particular on a base plate or cover.
  • the pressing elements are preferably 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, wherein preferably the return means act hydraulically and / or mechanically or are formed. Such return means allow accelerated change from the press position to the release position.
  • the invention also relates to a working machine, in particular wire or strip bending machine, for machining, in particular forming, continuous workpieces with a wall-like basic body which has a front and a rear machining side, with at least one tool unit for machining the workpieces and with a ring press having at least some of the above features.
  • a working machine in particular wire or strip bending machine, for machining, in particular forming, continuous workpieces with a wall-like basic body which has a front and a rear machining side, with at least one tool unit for machining the workpieces and with a ring press having at least some of the above features.
  • Such machines are used in particular in the production of sleeves made of metal, wherein initially plate-like workpieces are supplied to the tool unit, which have preferably been previously separated from a strip of material.
  • the tool unit preferably has a plurality of bending punches, in particular four bending punches, which are designed such that they can transform the bending-type plate-like workpiece into a cylindrical sleeve.
  • the sleeve thus formed is transported in the axial direction from the tool unit to the ring press.
  • the ring press axially adjoins the tool assembly in the direction of the bending axis, such that the deformed sleeve can be moved by the bending core of the tool assembly via the mandrel of the ring press.
  • the sleeve Prior to pressing by means of the pressing members, the sleeve may abut with an axial portion of its inner periphery at the uppermost axial outer peripheral portion of the mandrel.
  • the pressing elements are moved towards the sleeve in the radial direction, it is lifted off the mandrel and held centered (concentrically) therewith, in particular forming an annular gap between sleeve and mandrel.
  • the sleeve material Upon further pressure build-up, the sleeve material is plastically deformed and displaced by the pressing elements in the direction of the mandrel. In this case, the sleeve experiences in particular a reduction in its inner and outer diameters at approximately constant sleeve thickness.
  • the tool unit and the ring press are mounted on the same side of the main body, wherein the ring press covers the tool unit at least partially in the operative state of the machine.
  • the tool unit and the ring press are mounted on different sides of the body and that the deformed by the tool unit sleeve can be moved through an opening formed in the body through the ring press.
  • the ring press is pivotally mounted on the base body, preferably a orthogonal to the ground vertical axis, such that by pivoting the ring press access to the tool unit is possible.
  • the ring press can pivot in such an embodiment door-like away from the tool unit, so that, for example, maintenance work on the bending tools or bending dies can be performed.
  • the ring press is locked in the operable state relative to the base body, so that its mandrel is aligned in the axial direction with the bending core of the tool unit.
  • the pivoting of the ring press has the further advantage that the back of the ring press is easily accessible.
  • Fig. 1 shows a schematic perspective view of a working machine 10 in the form of a bending machine for the production of cylindrical sleeves.
  • the Bending machine 10 comprises a standing on a substrate U main body 12, the front processing side 14 can be seen.
  • On the front processing side 14 four bending slides 16 a - d are mounted, which are connected via corresponding gear with a mounted behind the front processing side 14 central drive gear 18.
  • the bending slides 16a-d move in the radial direction R to a bending core (not visible here) in order to deform a plate-like workpiece into a sleeve by means of a respective bending punch (not visible), wherein the sleeve is bent around the bending axis BA.
  • the ring press 18 arranged in front of the bending slides 16a-16d in the axial direction (bending axis BA) with respect to the front machining side 14.
  • the ring press 18 is attached by means of two hinges 20a and 20b to a support 22, which is screwed to the base body 12.
  • the ring press 18 is thus pivotable about a pivot axis SA, so that the access to the bending slide 16 a - 16 d and Biegestkovn or to one in the Fig. 1 not visible back of the ring press 18 is possible.
  • such a bending machine 10 may comprise a feed device, not shown, and a punching device, also not shown, so that from a continuous material (for example, metal strip or the like.) Plate-like workpieces punched and then the forming by the bending slides 16a - 16d and bending punch can be supplied.
  • Fig. 2 shows an enlarged view of the ring press 18, wherein the ring press associated covers are removed, so that the view is released into the interior of the ring press 18.
  • the ring press comprises a mandrel 24, about the outside of which a sleeve to be machined can be arranged, and with its inner circumference at least partially on the mandrel 24 may occasionally rest.
  • a total of 26 designated pressure generating arrangement has a compressive forces during the pressing process drive or pressure ring 28, a clamping or adjusting ring 30 and a
  • the drive ring 28 is connected to a trained as a hollow shaft rotor 34 of a torque motor 36.
  • the rotor 34 has magnets 38.
  • the torque motor 36 comprises a stator 40, in which associated windings and cooling channels are provided. When current flows through the windings, not shown, the rotor 34 is rotated.
  • the rotor 34 is driven in the clockwise direction UZ.
  • the torque motor can also be operated in the other direction.
  • the roller 32 In the radial direction, the roller 32 is followed by rollers 42 and a plurality of pressing elements 44, which are arranged next to each other in the circumferential direction and are very close to their radial outer end portions 46 and at their radial inner end portions 48 in the circumferential direction. In a pressing position, the pressing elements in their end regions 46, 48 may also touch ( Fig. 3 ). At their radially outer edge 50, the pressing elements 44 have a regular profile, which alternately includes radial elevations 52 and countersinks 54. Furthermore, the pressing elements 44 each have a slot-shaped opening 56 through which a guide element 58 passes.
  • This guide element 58 has in the radial direction R a length which is slightly smaller than the length of the elongated hole 56, so that the pressing elements 44 can move in the radial direction relative to the fixed guide element 58.
  • the pressing elements 44 are moved by the rolling of the rollers 42 on the continuous circumferential path 60 in the radial direction R to the mandrel 24, on which the workpiece to be machined, in particular a sleeve, is pushed.
  • the sleeve is acted upon and pressurized by the radial inner edges 62 of the pressing elements 44 which each form a circular arc segment, so that the sleeve is pressed between the pressing elements 44 and the mandrel 24 into their final shape.
  • the sleeve can be reduced in diameter inside and outside.
  • the pressures generated by the ring press are very high and amount to about 1000 tons.
  • the metallic sleeve material usually comes in the area of plastic deformation (flow area or compression area), so that an optimal and precise shaping is possible, which has already been explained in the introduction.
  • the generation of such high pressures is promoted by the high torques transmitting torque motor 36.
  • Fig. 4 shows a simplified schematic partial sectional view of the ring press 18 according to line IV-IV of Fig. 2 . From this representation, it can be seen that the ring press has on its rear side a base plate 64, which supports the pressure generating arrangement 18 in the axial direction of the bending axis BA. On its front side, the ring press has a cover plate 66, which is screwed to the base plate 64 via the guide elements 58. In the base plate 64, a lubricant supply 68 is further formed, can be supplied via the lubricant in the formed by the base plate 64, the cover plate 66 and the drive or pressure ring 28 Ringpresseninnenraum.
  • the lubricant supplied in this embodiment also serves as a return means for the pressing elements 44. If these are pressurized by the rolling of the rollers 42 via the elevations 52 in the radial direction R to the bending axis BA out, lubricant is in a between slot 56 and Guide member 58 formed intermediate space or chamber 70 is also pressurized. This hydraulic pressure allows the pressing members 44 to be returned radially outward when the rollers 42 are in a counterbore 54 of the continuous circumferential path 60.
  • Alternatively or supportively prestressed spring elements can also be used in the release position of the pressing elements, as in Fig. 2 indicated at 45.
  • the clamping ring 30 and the race 32 have conical contact surfaces 72 and 74, respectively.
  • the clamping ring can be adjusted by means of a plurality of adjusting devices 76 with respect to the race 32 and the drive ring 28 in the axial direction become.
  • a bias voltage can be adjusted to the pressing elements 44 by the interaction of the inclined contact surfaces 72, 74.
  • This adjustability makes it possible to make radial adjustments in the range up to about 0.30 mm.
  • the rotational movements generated by the torque motor 36 are transmitted to the rollers 42 by adhesion or frictional engagement between the clamping ring 30 and the race 32.
  • a hydraulic adjusting device can be used, which is the subject of the same time filed by the applicant patent application entitled "ring press with hydraulic clamping ring adjustment".
  • the contents of this patent application relating to hydraulic tension ring adjustment are incorporated herein by reference.
  • the clamping ring adjustment can also be effected by a plurality of circumferentially distributed arranged screws which are manually adjustable, as for example in the DE 10 2007 031 482 A1 was proposed.
  • the drive ring 28 is connected in its radially outer region via a plurality of screw connections 78 with the rotor 34 of the torque motor 36.
  • the interconnected annular components rotor 34, drive or pressure ring 28, clamping or adjusting ring 30 and race 32 move during operation of the ring press at the same speed and the torque generated by the torque motor 36 can normally without slippage and unchanged the rollers 42 driving the driving ring are transmitted. Since combing gear transmission or the like. Can be dispensed with, the proposed ring press with torque motor is a simplified construction, in which the maintenance is less.
  • Cooling channels 80 indicated, it being noted that the stator 40 is not shown here in detail. Furthermore, the stator 40 and the rotor 34 covering elements 84a are indicated.
  • Fig. 5 shows in enlarged scale the ring press 18 of Fig. 1 together with the carrier 22 and the hinges 20a, 20b to which the ring press 18 is pivotally mounted about the axis SA.
  • a handle 82 is provided on a ring press cover 84a.
  • the ring press 18 in the attached state on the working machine 10 (see. Fig. 1 ), so that the mandrel 24 is aligned with the bending core, not shown, of the bending slides 16a-d and the sleeves can be moved by the bending core onto the mandrel 24.
  • Fig. 5 shows the ring press with covered interior, wherein a plurality of annular covers 84a - e are used. Between the mandrel 24 and the cover 84 e, an annular gap 86 can be seen, through which the finished sleeve can be conveyed out of the ring press 18.
  • Fig. 6 shows the ring press 18 and the carrier 22 of the main body 12 ( Fig. 1 ) facing back.
  • the ring press is also covered on its back by annular covers, in Fig. 6 the view of the interior of the ring press is released.
  • pressing elements 44 and guide elements 58 and a roller cage 88 can be seen in which the rollers 42 are received.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Manufacture Of Motors, Generators (AREA)
EP10161861.9A 2009-09-22 2010-05-04 Presse annulaire dotée d'un moteur à couple Not-in-force EP2298468B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009042441A DE102009042441A1 (de) 2009-09-22 2009-09-22 Ringpresse mit Torque-Motor

Publications (3)

Publication Number Publication Date
EP2298468A2 true EP2298468A2 (fr) 2011-03-23
EP2298468A3 EP2298468A3 (fr) 2015-06-24
EP2298468B1 EP2298468B1 (fr) 2016-06-29

Family

ID=43430899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10161861.9A Not-in-force EP2298468B1 (fr) 2009-09-22 2010-05-04 Presse annulaire dotée d'un moteur à couple

Country Status (3)

Country Link
EP (1) EP2298468B1 (fr)
DE (1) DE102009042441A1 (fr)
ES (1) ES2581238T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107116168A (zh) * 2017-07-05 2017-09-01 湖北唯思凌科装备制造有限公司 一种可加工内花键齿的管柱旋锻机
DE102016207062A1 (de) 2016-04-26 2017-10-26 Otto Bihler Handels-Beteiligungs-Gmbh Presse mit doppelnockenübersetzt angetriebenem Presselement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007031482A1 (de) 2007-07-06 2009-01-08 Otto Bihler Maschinenfabrik Gmbh & Co Kg Ringpresse

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT368728B (de) * 1981-01-21 1982-11-10 Gfm Fertigungstechnik Schmiedemaschine
EP0919310B1 (fr) * 1997-11-13 2001-03-14 GFM Beteiligungs- und Management GmbH & Co KG Machine à rétreindre rotative
DE19955321B4 (de) * 1999-11-17 2008-02-07 Volkswagen Ag Rundknetmaschine mit hydraulischem Kraftausgleich
DE10047025C2 (de) * 2000-09-22 2002-11-21 Uniflex Hydraulik Gmbh Radialpresse
DE10149924A1 (de) * 2001-10-10 2003-04-30 Uniflex Hydraulik Gmbh Radialpresse

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007031482A1 (de) 2007-07-06 2009-01-08 Otto Bihler Maschinenfabrik Gmbh & Co Kg Ringpresse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016207062A1 (de) 2016-04-26 2017-10-26 Otto Bihler Handels-Beteiligungs-Gmbh Presse mit doppelnockenübersetzt angetriebenem Presselement
CN107116168A (zh) * 2017-07-05 2017-09-01 湖北唯思凌科装备制造有限公司 一种可加工内花键齿的管柱旋锻机
CN107116168B (zh) * 2017-07-05 2018-12-18 湖北唯思凌科装备制造有限公司 一种可加工内花键齿的管柱旋锻机

Also Published As

Publication number Publication date
DE102009042441A1 (de) 2011-03-31
ES2581238T3 (es) 2016-09-02
EP2298468A3 (fr) 2015-06-24
EP2298468B1 (fr) 2016-06-29

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