EP2821158A1 - Procédé de fabrication de jantes de roue et équipement pour son exécution - Google Patents

Procédé de fabrication de jantes de roue et équipement pour son exécution Download PDF

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Publication number
EP2821158A1
EP2821158A1 EP13382273.4A EP13382273A EP2821158A1 EP 2821158 A1 EP2821158 A1 EP 2821158A1 EP 13382273 A EP13382273 A EP 13382273A EP 2821158 A1 EP2821158 A1 EP 2821158A1
Authority
EP
European Patent Office
Prior art keywords
ring
mandrel
rollers
sets
equipment
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.)
Withdrawn
Application number
EP13382273.4A
Other languages
German (de)
English (en)
Inventor
José Damián ESPAÑA LOPEZ
Juan José CANTELI VILLELLAS
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.)
Hayes Lemmerz Manresa SLU
Original Assignee
Hayes Lemmerz Manresa SLU
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 Hayes Lemmerz Manresa SLU filed Critical Hayes Lemmerz Manresa SLU
Priority to EP13382273.4A priority Critical patent/EP2821158A1/fr
Publication of EP2821158A1 publication Critical patent/EP2821158A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the invention refers to a procedure for the manufacturing wheel rims, based on shaping its perimeter profile by redistributing the thickness of the strip that forms the ring, and the equipment that carries out this redistribution.
  • This process commonly known as Flow Forming, has different modes of implementation, which achieve said redistribution of the thickness of the strip.
  • modes of implementation is the habitual process of moving the thickness of the strip that will form the profile of the rim, which is placed onto a rotating mandrel, and by means a roller during the turning of said mandrel, moulds the strip to the shape of the mandrel and this is done moving the thickness from the points where the roller begins to press until the end of the profile, in a single route made by a single set of rollers moving in the same direction.
  • This procedure has the drawback of having to foresee variations in the initial thickness of the strip, so as to be able to carry out the transport to parts that need it most, often neeeding thicker strips than necessary in order to have the capacity of moving material to where it is required.
  • a large amount of movement of material is carried out by having to accumulate it from the first moment it presses on the strip, to the point that needs the greatest thickness and, therefore, at the end of the process there is a considerable concentration of transported material, requiring the cutting of the final profile, eliminating surplus material and creating waste, which increases the cost of material in each component.
  • This invention aims to carry out a wheel rims formation process, reducing total weight, using narrower and lighter strips, with a process producing the minimum amount of waste, with a lower processing time and resulting in greater structural resistance.
  • the proposed invention is materialised in a procedure of wheel rim manufacturing, more specifically the process of transforming ringshaped strips that form the profile of the rim, which will hold the tyre on its outside area and, the wheel disc on the inside.
  • This procedure starts with the reception of the ring that will form the rim profile, this is a metal strip that has been previously welded and treated by habitual procedures and ensuring the proper resistance of said ring.
  • the strip that forms the ring have been adjusted to the thickness of the largest section, being possible to start off with a sheet thinner than used in the state of the art, which must carry out the transport of material for all the thicknesses of different sections.
  • This allows the use of a lighter ring, which will result in a lighter wheel rim, with the importance of weight saving in the vehicles using these rims.
  • a biconical expansion is carried out, as the process uses equipment with a biconical mandrel, where the ring to be processed is placed. This expansion is done previously on equipment that is not part of the equipment where the transport of material or Flow Forming is carried out.
  • the ring has its flat transversal section turned into a V-shaped section where its middle area projects inside, with the ends projecting out, spreading out the volume of the material needed at each side of the central area, achieving advantageously by means this new initial configuration of the ring, a release of structural tension, especially in the exterior area, which reduces the probability of breakage during the process, considerably reducing rejects and enabling greater speed and pressure, of the rollers if necessary.
  • This new procedure reduces breakage by about 99%, carrying out a redistribution-elimination of tension in the internal structure, while in turn offering a control of reduction in thickness and reduction of time cycle due to its final configuration.
  • the ring has taken on a first approximation to the rotating mandrel, which has a biconical structure and where a spreading of the volume of the material needed on each side of the central area has been carried out.
  • Said ring is placed in the equipment which will move the material, leaving the central area of the ring adjusted to the shape of the mandrel, with the result that it is not necessary to fatigue this area with the rollers to adapt it to the shape and thickness of the design, as the strip that forms the ring has this thickness in this central area, which is the area of maximum thickness.
  • the process of transport of material is carried out -Flow Forming- using advantageously at least two sets of rollers, formed by two or more rollers in each set, which initiate the process starting from each of the ends of the central area already adapted to the mandrel by means the expansion carried out previously.
  • each set of rollers habitually one pair of rollers per set, move it turning and pressing on the ring that also turns in the mandrel, following the direction of movement from the starting point of one of the ends already secured in the central area, until the end of the ring it has at its side.
  • This novel and advantageous process carries out transport of much less material than in current processes, as it is not necessary to drag the material needed in the middle part or on the other end of the wheel from one end of the ring to the other, rather we can start with a ring of thickness corresponding to the area of the maximum thickness, central area, and only move/reduce the thickness from the rest of the area to the ends of the ring, widening the ring which begins narrow and therefore of lighter weight, and the process of transport of material distributes it to the end of the mandrel.
  • the total weight of the finished wheel rim is reduced thanks to the lesser weight of the sheet forming the initial ring, which as has been said, is thinner than those used in the state of the art, taking as reference the thickness of the section with the greatest thickness. Weight reduction may be greater that 0.5 kg according to the type of rim, achieving configurations up to 20% lighter.
  • rollers need to exert less pressure, which will reduce their wear and therefore lower maintenance costs, and reduce fatigue of the ring forming the rim.
  • having to exert less pressure means less power is needed to carry out the process than is currently used, that carries out the transport of material from end to end of the profile of the ring, with the resulting energy saving in the process.
  • rollers per set allows the use of less pressure exerted by said rollers on the material, which reduces their wear and minimises material fatigue.
  • the advantageous configuration of the Flow Forming process that starts from the central area to the end, enables a reduction in the processing time by close to half that normally used, without having to increase the processing speed and therefore having to cause more fatigue on the ring.
  • the process is carried out by equipment that has un biconical mandrel, with the shape you wish to give to the profile of the ring that forms the rim, without needing to have a gripping area of the ring on one of its ends, as it is secured to the mandrel by means of the biconical expansion that adapts the central parte to the mandrel. This expansion is carried out by pressing prior to fitting to the mandrel inside the equipment.
  • the equipment has advantageously at least two sets of rollers, which by a numerical calculation system, move from the central area already adapted, to the end of the mandrel, pressing on the ring that turns in said mandrel, and moving material to said end.
  • a numerical calculation system moves from the central area already adapted, to the end of the mandrel, pressing on the ring that turns in said mandrel, and moving material to said end.
  • one of the rollers is subject to the main wear, whereas the other, or the rest of those working in the same set, accompany with hardly any wear.
  • the manufacturing procedure for wheels starts with the creation of the wheel rim ring (11) using a metal strip (12), by habitual procedures, but with the novelty of having a thinner strip (12) than habitually used.
  • said ring (11) is expanded by means of pressing that provides it with a V-shaped biconical configuration, as shown in Figure 1 , giving the ring (11) an central area (13) that fits into the mandrel (14) of the equipment (10) in charge of transporting the material -Flow Forming-.
  • the equipment (10), not shown in the drawings, has two sets (15a and 15b) of rollers (16), each of the sets (15a and 15b) being independent, incorporating in this embodiment two rollers (16) in each set (15a and 15b).
  • the rollers (16) are normally located in the set (15a and 15b) symmetrically to each other with regard to the rotating shaft of the mandrel (14).
  • Each of the sets (15a and 15b) is located at one end of the central area (13) of the ring (11).
  • both the rotation of the mandrel (14) and the movement of the rollers (16) pressing the ring (11) against the shape of the mandrel (14) carry out the coupling of the ring (11) to said mandrel (14), distributing the thickness of the strip (12) according to characteristics predefined by the design of the wheel profile, using preferably a numerical control system to adjust the rotation speed of the mandrel (14) and the position of the rollers (16), controlling the movement of the sets (15), in order to achieve said wheel rim profile design.
  • the set of rollers (15a and 15b) move out from the initial position of their corresponding end of the central area (13), towards the end of the strip (12), each of them following in a non-Cartesian axis, and acting only on their corresponding side of the ring (11), from the central position to the end (17a and 17b).
  • the equipment (10), not shown in the drawings, has a biconical mandrel (14), on which the ring (11) is fitted, and having two sets (15a and 15b) with two rollers (16) each, that move in opposite directions from an initial position, without needing auxiliary securing systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP13382273.4A 2013-07-04 2013-07-04 Procédé de fabrication de jantes de roue et équipement pour son exécution Withdrawn EP2821158A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13382273.4A EP2821158A1 (fr) 2013-07-04 2013-07-04 Procédé de fabrication de jantes de roue et équipement pour son exécution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13382273.4A EP2821158A1 (fr) 2013-07-04 2013-07-04 Procédé de fabrication de jantes de roue et équipement pour son exécution

Publications (1)

Publication Number Publication Date
EP2821158A1 true EP2821158A1 (fr) 2015-01-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13382273.4A Withdrawn EP2821158A1 (fr) 2013-07-04 2013-07-04 Procédé de fabrication de jantes de roue et équipement pour son exécution

Country Status (1)

Country Link
EP (1) EP2821158A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108356125A (zh) * 2017-12-29 2018-08-03 浙江金固股份有限公司 车轮、轮辋旋辊压工艺及旋压装置
CN109848359A (zh) * 2019-01-30 2019-06-07 上海大学 整体式关节轴承双向旋锻成形方法
WO2019158428A1 (fr) * 2018-02-16 2019-08-22 Leifeld Metal Spinning Ag Machine de déformation et procédé de déformation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1389501A1 (fr) 2002-08-15 2004-02-18 Speedline S.r.l. Procédé flexible pour la fabrication de roues en alliage léger et machine pour l'exécution de ce procédé
WO2006014110A1 (fr) * 2004-08-06 2006-02-09 Fontijne Grotnes B.V. Procede et dispositif pour fabriquer un logement de jante par formage a froid
US20060123629A1 (en) * 2002-10-17 2006-06-15 Udo Friese Method and device for the production of a pneumatic tyre rim
JP2012245551A (ja) * 2011-05-30 2012-12-13 Chuo Motor Wheel Co Ltd リム成形方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1389501A1 (fr) 2002-08-15 2004-02-18 Speedline S.r.l. Procédé flexible pour la fabrication de roues en alliage léger et machine pour l'exécution de ce procédé
US20060123629A1 (en) * 2002-10-17 2006-06-15 Udo Friese Method and device for the production of a pneumatic tyre rim
WO2006014110A1 (fr) * 2004-08-06 2006-02-09 Fontijne Grotnes B.V. Procede et dispositif pour fabriquer un logement de jante par formage a froid
JP2012245551A (ja) * 2011-05-30 2012-12-13 Chuo Motor Wheel Co Ltd リム成形方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108356125A (zh) * 2017-12-29 2018-08-03 浙江金固股份有限公司 车轮、轮辋旋辊压工艺及旋压装置
WO2019158428A1 (fr) * 2018-02-16 2019-08-22 Leifeld Metal Spinning Ag Machine de déformation et procédé de déformation
CN109848359A (zh) * 2019-01-30 2019-06-07 上海大学 整体式关节轴承双向旋锻成形方法

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