EP3189909A1 - Dispositif et procédé de fabrication d'une roue en métal léger - Google Patents

Dispositif et procédé de fabrication d'une roue en métal léger Download PDF

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Publication number
EP3189909A1
EP3189909A1 EP16002381.8A EP16002381A EP3189909A1 EP 3189909 A1 EP3189909 A1 EP 3189909A1 EP 16002381 A EP16002381 A EP 16002381A EP 3189909 A1 EP3189909 A1 EP 3189909A1
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EP
European Patent Office
Prior art keywords
preform
rollers
wheel
freely rotating
rotating 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.)
Granted
Application number
EP16002381.8A
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German (de)
English (en)
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EP3189909B1 (fr
Inventor
Giorgio MUFFATTO
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.)
RONAL AG
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RONAL AG
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47603518&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3189909(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by RONAL AG filed Critical RONAL AG
Priority to PL16002381T priority Critical patent/PL3189909T3/pl
Publication of EP3189909A1 publication Critical patent/EP3189909A1/fr
Application granted granted Critical
Publication of EP3189909B1 publication Critical patent/EP3189909B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/002—Positioning devices
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/30—Making other particular articles wheels or the like wheel rims

Definitions

  • the invention relates to a device and a method for producing a light metal wheel from a preform.
  • the invention relates to the production of light-alloy wheels, in particular made of aluminum or aluminum alloy by means of flow forming.
  • This is a sub-form of Shear Forming, while in German different terms, such as flow (pressure) rollers, rotating rollers or draw rolls are used and here the latter term is to be used.
  • Stretching is a non-cutting forming process for final shaping of lightweight aluminum bodies such as aluminum or aluminum alloys, particularly metal wheels.
  • the preform of a wheel with a rotationally symmetrical sheath formation on a simple, rotating tool a mandrel is placed, which is rotated with the preform in rotation.
  • a plurality of differently shaped drafting rollers engage with radial pressure on the rotationally symmetrical peripheral wall of the Preform and are moved along this, ie in an axial component during the rotation of the preform, whereby on the one hand, a compaction of the material takes place, on the other hand, this stretched by the substantially axially extending draw rolls and thus deformed and just when producing a metal wheel for Rim of the same.
  • This processing operation in itself a cold-forming process, can be carried out at an elevated temperature of up to 350 ° C., wherein it should be noted that heating takes place anyway by the deformation process by means of the drafting rollers alone.
  • Such methods are basically from the US 2003/0145466 A1 or the ITVI20040061 A known.
  • the inner or underside of the wheel to be produced is predetermined by the shape of the mandrel and the peripheral edge of the rim flange can be optionally formed only in a complex manner by traversing the same with the drafting rollers, including the one hand complicated control operations of movement are required, on the other hand, the mandrel can disturb.
  • the EP 1 712 310 and the EP 1 714 714 A1 relate to the molding of a snap ring groove in the manufacture of oblique shoulder rims for trucks.
  • rims are usually processed in a flow-forming process.
  • a rim blank which is usually from a rounded to a hollow cylinder and butt welded sheet metal strip, so that steel, deformed by pressing of pressure rollers.
  • the workpiece is set in rotation about its longitudinal axis.
  • the molding is carried out by deforming a groove and then by means of a - attacking from the inside - element element substantially away from the longitudinal axis of forming the end portion of the workpiece to a - provided on the outside of the workpiece wall - a predetermined groove profile exhibiting counter element. So here it takes place only a reshaping of the metal strip in the region of the snap ring groove to be formed to this.
  • the DE 2 053 005 and the DE 2 231 842 relate to methods and apparatus for producing Schrägschulterfelgen itself (as they are then provided according to the aforementioned publications with a groove).
  • the flowforming process was not yet available.
  • the DE 103 22 752 A1 relates to a method for producing workpieces made of sheet metal with at least one branch by a forming process, among other things, rims for motor vehicles are addressed. But even here it is only about the pure forming to the effect that in the area of a previously introduced bending point by means of an attacking forming roller (2-2c) at least one weg josder from the sheet plane flange is formed from the sheet, with areas of this flange fastened differently, so compressed should be and thus have different strength in the final product. An axial stretching along the wall of the metal jacket does not take place here either.
  • the WO 2005/065049 A2 refers to the production of a one-piece steel wheel.
  • the process is multi-level and the individual stages are carried out in different form-changing processing stages.
  • a short cylinder jacket wall is radially perpendicular over a cylindrical mandrel by radially pressurizing and axially moving rollers.
  • a retracted into the interior of the cylinder barrel contoured other mandrel on this the shaping of the rim and its individual sections made by other rollers, which are also each in their working section (rim 3, tire seat 2 and 4) must move axially restricted.
  • the formation of the inner and outer rim flange (these two stages are preceded by further steps in turn other tools). It is essential that the rim flange is not formed by a roller in the first-mentioned stage of the stretching, but between only radially against each other engaging rollers / rollers is formed, although a non-working feed movement and the two rollers but only working radially against each oppressive.
  • the DE 1 452 610 relates to a method of forming an outwardly opening groove on a cylindrical tube.
  • the tube is stretched in a first step by means of a first roller along the cylindrical portion of a mandrel, which has a taper at one end.
  • a tailstock cushion and another roll To form the actual groove at the free end of the tube engage radially from the inside and from outside the taper of the mandrel, a tailstock cushion and another roll.
  • stretching and forming processes are separated and carried out by different tools.
  • the invention has for its object to provide a method and an apparatus for producing light-alloy wheels, which form better, faster and less expensive while optimizing the production, in particular the inner rim flange.
  • the invention provides a device according to the invention with the features of claim 1 and an inventive method with the features of claim 8 before.
  • the device according to the invention has a mandrel and draw rolls accommodating the preform of the wheel, which initially engage in the outer region (which is placed at the top for processing) of a rotationally symmetrical shell of the preform.
  • the drafting rollers are under radial pressure exerting under - radial - compression and - axial - stretching - the shell wall along the same movable. By means of the drafting rollers so the rim of the wheel along the mandrel is finally formed.
  • the mandrel inside the preform of the wheel or in the interior of the wheel to be produced is a rotationally symmetrical body and has no undercuts in the shell region, preferably the mandrel widens slightly conically from the outside of the wheel to the inside.
  • the mandrel must therefore not, as would be the case with undercuts, a multi-part body whose items would have to be removed to remove the wheel from him by additional hydraulic fasteners, which makes such a tool design vulnerable and also the precision of the wheel in terms of can affect important roundness and cause imbalance.
  • the mandrel protrudes inside the produced wheel to the inside up to the height of the inner rim flange, but does not take this under.
  • the device according to the invention is designed in such a way that at least one of the stretch rollers acting laterally on the wheel carries out the (flow) shaping of the wheel jacket over its entire height, including the shaping of the outer side of the inner rim flange.
  • the forming can be done as a hot or as cold-forming, the former being used with hot preform and hot tool, the latter with cold preform and cold tool, which heat up due to the machining process in a way.
  • the former is used in particular for cast preforms, the latter for forged preforms.
  • a device can furthermore be configured in that the freely rotating rollers have an axis of rotation inclined at an inclination angle of 50 ° to 70 ° to a rotational axis of the preform, wherein in particular the angle of inclination of the axes of rotation of the freely rotating rollers to the axis of rotation of the preform is adjustable.
  • a rim end forming profile stretching roller can be provided.
  • the inventive method provides in a further development that the freely rotating rollers rotate about axes that include inclination angle of 50 ° to'70 ° to the axis of rotation of the preform, in particular, the free-rotating rollers engage under the lower edge of the preform with its coat, the an angle of 20 ° to 40 ° to the axis of rotation of the freely rotating rollers.
  • at least one profile stretching roller for the final shaping of the rim flange engages under radial pressure exerted on the rim flange formed between draw rolls and freely rotating rolls.
  • the invention provides in particular the possibility for a speedy, accurate and optimal design of the inner rim flange of a light metal wheel.
  • the Fig. 1 and 4 show a motor vehicle metal wheel 1 dashed as a preform and traced with its final contour in section ( Fig. 4 only in partial representation).
  • the wheel 1 has a rim 1.1 and on its outside 1a a wheel disc or a spoke area 1.3 with a hub 1.4. In the inner region of the wheel disc 1.3 outside the hub 1.4 breakthroughs 1.5 are provided for attachment of the wheel by means of screws on the vehicle.
  • the rim 1.1 has an outer rim flange 1.6 near the wheel disc 1.3 and an inner rim flange 1.7, facing away from the wheel disc 1.3, on the inside 1b.
  • the jacket of the preform 1.8 extends radially, in particular in its inner region, clearly beyond the final contour of the wheel. Moreover, in the preform 1.8, the jacket extends in the axial direction only over part of the height of the finished wheel, preferably over 50% to 75%.
  • the draw rolls 3 are each rotatable about a substantially vertically extending axis of rotation.
  • the preform of the wheel 1 is seated on a simple tool in the form of a clamping mandrel 2 designed as a rotary body, which determines the inner shape of the wheel 1.
  • the mandrel 2 is in one piece. It has no undercuts in the peripheral region and widens slightly conically from the outer side 1a of the wheel 1 to its inner side 1b, so that the finished-shaped wheel can be easily removed from the mandrel 2.
  • stretching rollers 3 On the outer circumference of the wheel 1 engage, in particular evenly distributed over the circumference, stretching rollers 3, which, as in the left-side overlay representation of Fig. 1 represented, may be formed differently. They first attack in the upper part of the preform of the wheel 1, while exerting a radial pressure and at the same time travel along the preform of the wheel down, where they are the later Radmantel or the actual by the pressure exerted Rim 1.1 of the wheel 1 forming part 1.8 stretch the preform of the wheel down and compact at the same time.
  • the preform of the wheel 1 or the wheel 1 is supported on the one hand by the mandrel 2. This extends over the entire height of the wheel to be produced up to the axial height of the inner rim flange 1.7, but does not reach under the edge, the later inner rim flange 1.7 of the wheel. This is rather underrun by additional free-running roles 4.
  • three rollers are arranged, which are provided distributed uniformly over the circumference, in each case under a draw roller. 3
  • Fig. 3 laterally provided in the region of the inner rim flange 1.7 to be formed circumferentially between two free-running rollers 4 at least one profile stretching roller 5, the profile of the inner rim flange 1.7 by radial pressure exerted in its circumferential groove provided on the profile 5.1.
  • the three rotating rollers 4 are, as from the Fig. 1 it can be seen with its axis of rotation 4.1 to the axis of rotation 2.1 of the mandrel 2 and thus the rotationally fixed seated wheel 1 at an angle ⁇ of about 60 ° aligned.
  • the freely rotating rollers 4 are formed frusto-conical and taper from its bottom to the top, wherein the jacket wall 4.2 forms an angle of 20 ° to 30 ° to the axis of rotation 4.1.
  • the freely rotating rollers 4 engage with their jacket wall on the inside underside of the wheel 1 to form the inner rim flange 1.7.
  • the axis of rotation of the freely rotating rollers 4.1 is freely adjustable to a certain degree, for example, between 50 ° and 70 ° relative to the axis of rotation of the 2.1 Mandrel 2, so that in this way the inner end face of the inner rim flange 1.7 can be adjusted by the angle of attack of the axis of rotation 4.1.
  • the manufacturing process is essentially the following:
  • the preform of the wheel 1 is poured and freed from connecting pin. Subsequently, the preform is clamped on the mandrel 2 and can be heated, ideally not to over 350 °. Then, the drafting rollers 3 move in the upper region of the preform against the same and move under the exercise of radial pressure from the outer rim flange 1.6 down to the inner rim flange 1.7, thereby forming the rim 1.1 and essentially the rim flanges 1.6, 1.7. The material of the shell of the wheel is pulled on the one hand to form the rim down in the region of the inner rim flange 1.7, so stretched, on the other hand compacts the material of the wheel.
  • the freely rotating rollers 4 attack there with their jacket wall 4.2, while the profile stretching roller 4.5 engages in the space between two freely rotating rollers 4, exerts radial pressure and in its profile groove 5.1, the inner rim flange 1.7 ausform and endformt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
EP16002381.8A 2011-10-27 2012-10-24 Dispositif et procédé de fabrication d'une roue en métal léger Active EP3189909B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16002381T PL3189909T3 (pl) 2011-10-27 2012-10-24 Urządzenie i sposób wytwarzania koła z metalu lekkiego

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011117034.4A DE102011117034B4 (de) 2011-10-27 2011-10-27 Vorrichtung und Verfahren zum Herstellen eines Metallrades
EP12818482.7A EP2771137B1 (fr) 2011-10-27 2012-10-24 Combination d'une preforme et dispositif et procédé de fabrication d'une roue en alliage léger
PCT/EP2012/004444 WO2013060451A1 (fr) 2011-10-27 2012-10-24 Dispositif et procédé de fabrication d'une roue en alliage léger

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP12818482.7A Division EP2771137B1 (fr) 2011-10-27 2012-10-24 Combination d'une preforme et dispositif et procédé de fabrication d'une roue en alliage léger
EP12818482.7A Division-Into EP2771137B1 (fr) 2011-10-27 2012-10-24 Combination d'une preforme et dispositif et procédé de fabrication d'une roue en alliage léger

Publications (2)

Publication Number Publication Date
EP3189909A1 true EP3189909A1 (fr) 2017-07-12
EP3189909B1 EP3189909B1 (fr) 2020-12-02

Family

ID=47603518

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12818482.7A Active EP2771137B1 (fr) 2011-10-27 2012-10-24 Combination d'une preforme et dispositif et procédé de fabrication d'une roue en alliage léger
EP16002381.8A Active EP3189909B1 (fr) 2011-10-27 2012-10-24 Dispositif et procédé de fabrication d'une roue en métal léger

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12818482.7A Active EP2771137B1 (fr) 2011-10-27 2012-10-24 Combination d'une preforme et dispositif et procédé de fabrication d'une roue en alliage léger

Country Status (9)

Country Link
US (1) US9573179B2 (fr)
EP (2) EP2771137B1 (fr)
DE (1) DE102011117034B4 (fr)
ES (2) ES2854401T3 (fr)
HU (2) HUE032294T2 (fr)
PL (2) PL3189909T3 (fr)
PT (2) PT3189909T (fr)
TW (1) TWI600482B (fr)
WO (1) WO2013060451A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3351313B1 (fr) * 2017-01-18 2020-04-15 Leifeld Metal Spinning AG Procédé et dispositif de fluotournage

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1452610A1 (de) 1963-12-23 1969-03-27 Cincinnati Milling Machine Co Verfahren zur Herstellung eines hohlen Gegenstandes mit einer Hohlkehle
DE2053005A1 (de) 1970-10-28 1972-05-25 Leifeld & Co, 4730 Ahlen Verfahren und Vorrichtung zur Herstellung von Schrägschulterfelgen
DE2231842A1 (de) 1972-06-29 1974-01-17 Leifeld & Co Schraegschulterfelge und verfahren zu ihrer herstellung
JPS5263164A (en) * 1975-11-20 1977-05-25 Toshiba Machine Co Ltd Method and device for processing wheel cap
US20030145466A1 (en) 2002-02-04 2003-08-07 Jeong-Hoon Baek Method for manufacturing alloy wheel for automobile
ITVI20040061A1 (it) 2004-03-19 2004-06-19 Speedline Srl Metodo costruttivo per la realizzazione di ruote per veicoli in lega leggera e ruota cosi' ottenuta
DE10322752A1 (de) 2003-05-19 2004-12-30 Prof. Dr.-Ing. Dipl.-Wirtsch.-Ing. Peter Groche Verfahren zum Herstellen von Werkstücken aus Blech
WO2005065049A2 (fr) 2004-01-07 2005-07-21 Wheels India Limited Roue de construction monobloc et procede de fabrication
EP1712310A1 (fr) 2005-04-13 2006-10-18 Repkon Machine and Tool Industry & Trade Ltd. Méthode et dispositif pour le formage d'une rainure
EP1714714A1 (fr) 2005-04-18 2006-10-25 Repkon Machine and Tool Industry & Trade Ltd. Méthode et dispositif pour le formage d'une rainure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5531024A (en) * 1994-03-31 1996-07-02 Motor Wheel Corp Method of making a full face wheel
US5454248A (en) * 1994-05-02 1995-10-03 Rays Engineering Co., Ltd. Method of shaping a wheel
US6644083B2 (en) * 2000-06-19 2003-11-11 Macdonald-Miller Incorporated Spin forming a tubular workpiece to form a radial flange on a tubular flange and a bead or thick rim on the radial flange
JP2005349455A (ja) * 2004-06-14 2005-12-22 Work:Kk ホイールの製造方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1452610A1 (de) 1963-12-23 1969-03-27 Cincinnati Milling Machine Co Verfahren zur Herstellung eines hohlen Gegenstandes mit einer Hohlkehle
DE2053005A1 (de) 1970-10-28 1972-05-25 Leifeld & Co, 4730 Ahlen Verfahren und Vorrichtung zur Herstellung von Schrägschulterfelgen
DE2231842A1 (de) 1972-06-29 1974-01-17 Leifeld & Co Schraegschulterfelge und verfahren zu ihrer herstellung
JPS5263164A (en) * 1975-11-20 1977-05-25 Toshiba Machine Co Ltd Method and device for processing wheel cap
US20030145466A1 (en) 2002-02-04 2003-08-07 Jeong-Hoon Baek Method for manufacturing alloy wheel for automobile
DE10322752A1 (de) 2003-05-19 2004-12-30 Prof. Dr.-Ing. Dipl.-Wirtsch.-Ing. Peter Groche Verfahren zum Herstellen von Werkstücken aus Blech
WO2005065049A2 (fr) 2004-01-07 2005-07-21 Wheels India Limited Roue de construction monobloc et procede de fabrication
ITVI20040061A1 (it) 2004-03-19 2004-06-19 Speedline Srl Metodo costruttivo per la realizzazione di ruote per veicoli in lega leggera e ruota cosi' ottenuta
EP1712310A1 (fr) 2005-04-13 2006-10-18 Repkon Machine and Tool Industry & Trade Ltd. Méthode et dispositif pour le formage d'une rainure
EP1714714A1 (fr) 2005-04-18 2006-10-25 Repkon Machine and Tool Industry & Trade Ltd. Méthode et dispositif pour le formage d'une rainure

Also Published As

Publication number Publication date
US20140283572A1 (en) 2014-09-25
TW201338889A (zh) 2013-10-01
EP3189909B1 (fr) 2020-12-02
WO2013060451A1 (fr) 2013-05-02
EP2771137A1 (fr) 2014-09-03
ES2854401T3 (es) 2021-09-21
DE102011117034A1 (de) 2013-05-02
HUE032294T2 (en) 2017-09-28
DE102011117034B4 (de) 2015-09-17
HUE053016T2 (hu) 2021-06-28
EP2771137B1 (fr) 2017-03-15
WO2013060451A8 (fr) 2014-05-01
PL3189909T3 (pl) 2021-05-31
ES2627025T3 (es) 2017-07-26
PL2771137T3 (pl) 2017-08-31
US9573179B2 (en) 2017-02-21
TWI600482B (zh) 2017-10-01
PT3189909T (pt) 2021-01-13
PT2771137T (pt) 2017-05-15

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