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EP1181119A2 - Procede et dispositif de fluotournage - Google Patents

Procede et dispositif de fluotournage

Info

Publication number
EP1181119A2
EP1181119A2 EP00938668A EP00938668A EP1181119A2 EP 1181119 A2 EP1181119 A2 EP 1181119A2 EP 00938668 A EP00938668 A EP 00938668A EP 00938668 A EP00938668 A EP 00938668A EP 1181119 A2 EP1181119 A2 EP 1181119A2
Authority
EP
European Patent Office
Prior art keywords
rim
workpiece
wall thickness
feed
discharge
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
EP00938668A
Other languages
German (de)
English (en)
Other versions
EP1181119B1 (fr
Inventor
Günter POLLKÖTTER
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.)
Leico GmbH and Co Werkzeugmaschinenbau
Original Assignee
Leico GmbH and Co Werkzeugmaschinenbau
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 Leico GmbH and Co Werkzeugmaschinenbau filed Critical Leico GmbH and Co Werkzeugmaschinenbau
Publication of EP1181119A2 publication Critical patent/EP1181119A2/fr
Application granted granted Critical
Publication of EP1181119B1 publication Critical patent/EP1181119B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
    • B21H1/10—Making articles shaped as bodies of revolution rings of restricted axial length rims for pneumatic tyres
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/182—Rolling annular grooves

Definitions

  • the invention relates to a method for producing vehicle wheels with a rim made of a steel material, in which a tubular element with a uniform wall thickness is clamped as a workpiece in a press-rolling machine and at least one profile roller is fed radially, through which the workpiece is drawn in radially and a rim profile is formed.
  • the invention relates to a device for pressure rolling, in particular tube elements for the production of rims, with a pressure rolling unit.
  • the aim is to reduce the mass of unsprung vehicle parts.
  • the reduction in mass, in particular of the vehicle wheels, plays an important role here.
  • Vehicle wheels are currently mainly made of steel or a light metal, in particular an aluminum alloy.
  • the invention is based on the object of specifying a method and a device which allow the production of vehicle wheels from a steel material with a particularly low mass.
  • the solution of the task according to the invention is based on the gateways method and is characterized in that, before the rim profile is formed, the workpiece is clamped on a cylindrical rolling mandrel, the diameter of which corresponds to the inside diameter of the tubular element, that at least one is brought in by radial and axial infeed Spinning roller, the wall thickness of the workpiece is reduced in defined sub-areas and the workpiece is axially elongated, areas of different wall thicknesses being generated, and then the rim profile of the rim being molded.
  • a basic idea of the invention is that before the rim profile is formed, the material is reduced in those areas of the workpiece which are formed into rim areas in which, due to a slight gere mechanical load when using the rim a correspondingly lower wall or material thickness is sufficient.
  • a weight-optimized rim ring of the same size produced with the method according to the invention has a mass of 2.96 kg. The mass reduction is 1.24 kg per rim ring.
  • the reduction in the wall thickness of the item of value is molded in by counter-rotating pressure rolls.
  • the material of the workpiece flows against the axial feed direction and is lengthened axially.
  • the opposing spinning rolling has the advantage that a particularly high strain hardening can be achieved, so that a very large one Strength of the material is achieved. This allows the setting of particularly thin wall thicknesses of the rim, which further reduces the mass of the vehicle wheel.
  • the pipe section can be easily attached to the rolling mandrel. For example, in the case of synchronous spinning rolling, a cup formed on the tube piece is required, the bottom of which is pressed onto the free end of the rolling mandrel by means of tailstock force and pressure disk.
  • the counter-rotation pressure rolling has the advantage that the workpiece length is not limited by the longitudinal support stroke and the length of the mandrel. This allows a conversion of the spinning roll machine, e.g. There is no need to replace the mandrel to produce rims of different widths if the rim widths vary within certain limits.
  • a further preferred embodiment of the method according to the invention provides that a wall thickness that is greater than the adjacent areas is set at least in an axial central area of the workpiece. In this way, the wall thickness of the material in the areas adjacent to the central area is reduced to such an extent that the rim mass is as small as possible with a certain required load capacity of the rim. On the other hand, sufficient material is available in the central area so that a wheel bowl can be securely welded on.
  • the axial central region is drawn in radially at the deepest when the rim profile is formed, and a rim bed with a large wall thickness is formed in the process.
  • a rim bed with a large wall thickness is formed in the process.
  • the rim wall which has a large wall thickness, is suitable for absorbing particularly high load forces which are transmitted at this point between the rim bed and the wheel disc.
  • a wall thickness is set in a region of the two free ends of the workpiece that is greater than the adjacent workpiece regions. It can be provided that the area of the two free ends is formed into a rim flange. In this way, rim flanges with the required high mechanical load-bearing capacity can be produced, with a smaller wall thickness being possible in the areas adjacent to the rim flanges.
  • a preferred embodiment of the method according to the invention provides that in the areas which are formed into the rim shoulders, the wall thickness of the workpiece is reduced in a defined manner and the strength of the steel material is increased in a targeted manner. In this way, the wall thickness is reduced in order to reduce the weight of the rim, the strength of the steel material being increased due to the cold work hardening which occurs as a result of the rim shoulders being formed. As a result, the mass of the rim can be significantly reduced with a high load capacity.
  • a further embodiment of the method according to the invention provides that in at least one area which is formed into a rim shoulder, a partial area is formed into a rim hump. Depending on the requirements for the mechanical load-bearing capacity, the wall thickness of the workpiece in the partial area of the rim hump to be shaped can also be selected accordingly.
  • the solution to the object of the invention is based on the generic device for pressure rolling in that at least two pressure rolling units are provided, which are combined in one processing station, that a common feed device is provided, through which workpieces can be fed to the at least two pressure rolling units, and that a common discharge device is provided, through which workpieces can be removed from the at least two spinning roller units.
  • the device for pressure rolling according to the invention has the advantage that at least two workpieces can be machined side by side at the same time, which enables particularly effective and therefore inexpensive manufacture, in particular of rims, using the method according to the invention.
  • the spinning roll units are arranged in the processing station with their main spindles parallel to one another. As a result, the workpieces can be supplied to and removed from the pressure-rolling units in a particularly simple manner.
  • the feed device and / or discharge device comprises a feed member or a discharge member for each pressure roller unit. In this way it can be achieved that the workpieces can be fed in parallel and picked up by the spinning roller units and / or can be delivered and discharged in parallel by the spinning roller units. This enables a particularly efficient production of rims.
  • the feed and / or discharge members are movable and are arranged at a fixed distance from one another. It is particularly advantageous here if the uniform distance between the main spindles of the pressure-rolling units and the fixed distance between the feed and / or discharge members are the same. In this way, workpieces that are fed in at regular intervals can be picked up by the feed elements and fed directly to the main spindles of the spinning roller units. This advantage applies analogously to the corresponding laxative organs. All in all, this enables an even better increase in efficiency in the manufacture of the rims to be achieved.
  • a further preferred embodiment of the invention consists in that the feed device and / or discharge device has a transport channel for each spinning roller unit for feeding or discharging the workpieces. This makes it possible to implement a particularly cost-effective way of feeding or removing the workpieces.
  • a central control unit is provided, through which the machining and / or feeding and / or removal of the workpieces can be controlled.
  • machining and / or feeding and / or removal of the workpieces can be controlled.
  • the spinning roller units, the feed elements and the discharge elements can be individually controlled, in particular switched on and off, by the central control unit. This enables a particularly flexible control of the workpiece throughput and a capacity adjustment.
  • the spinning roller units, the feed elements and / or discharge elements are designed as uniform modules. On the one hand, this makes it easy to adapt a machine to customer requirements by assembling a corresponding number of modules. On the other hand, a module that has failed or is to be maintained can be replaced simply and quickly by a replacement module, so that a longer production downtime can be avoided. Finally, the modular design also brings cost advantages in the manufacture of the machine.
  • FIG. 2 shows a cross section through the workpiece shown in FIG. 1 after the defined reduction in the wall thickness and axial lengths of the workpiece
  • FIG. 3 shows a cross section through the workpiece shown in FIG. 2 after the rim profile has been formed
  • FIG. 4 shows a view of the device according to the invention with a representation of the feed and discharge units
  • Fig. 5 is a view of the device according to the invention with a representation of the pressure rolling elements.
  • FIGS. 1 to 3 show cross sections of the workpiece along cross sectional planes.
  • the cross-sectional planes run parallel to the axis of rotation of the workpiece and include it. Due to the rotational symmetry of the workpiece shown in each case about its axis of rotation, only one side of the cross section through the workpiece along the cross-sectional plane is shown in the cross sections shown in FIGS. 1 to 3.
  • Figure 1 shows a cross section through the wall of the tubular element, which has a uniform wall thickness and forms the workpiece 10.
  • FIG. 2 shows a cross section through the workpiece 10 shown in FIG. 1 after the defined reduction in wall thickness and axial lengths.
  • the initial wall thickness was left in an axial central area 11 of the workpiece 10, while the wall thicknesses of the adjacent areas, which are to form the rim shoulders, were reduced.
  • the initial Leave wall thickness was also set in a targeted manner in the pressure rolling carried out in some areas.
  • Figure 3 shows a cross section through the workpiece shown in Figure 2 after the molding of a rim profile.
  • the axial center region 11 was drawn in radially to the deepest by the molding in of the rim profile, a rim bed 16 having a large wall thickness being formed.
  • FIG. 3 shows two rim flanges 17, each formed at the two free ends 14.
  • the two rim shoulders 19 were each formed from the work-hardened areas with reduced wall thickness and additionally each have a molded hump 20.
  • FIG. 4 shows a partially sectioned view of a device according to the invention with three pressure roller units 25, a common feed device 30 and a common discharge device 31.
  • the feed device 30 has a feed element 32 for each pressure roller unit 25, whereby the workpieces 10 separate the individual pressure roller units 25 can be supplied.
  • the feed members 32 each consist of a carriage 37 which is slidably mounted on a cross member 34 attached to support columns 33.
  • a gripper arm 38 is attached to the carriage 37 in a vertically adjustable manner.
  • a clamping gripping device 39 is attached to a free end of the gripping arms 38 for receiving workpieces 10.
  • the carriages 37 are equally spaced from one another and are rigidly connected to one another.
  • a feed station 36 is shown in FIG. 4, at which the workpieces 10 to be fed are made available for reception by the feed members.
  • the feed station 36 can be designed, for example, as a conveyor belt with corresponding fastening elements 40 for receiving the workpieces 10 when they are made available.
  • a mobile pick-up and transport unit such as a correspondingly designed pallet with fastening elements 40.
  • the distance between the workpieces 10 brought up to the feed station 36 is preferably equal to the distance between the clamping gripping devices 39 from one another.
  • the discharge device 31 has a transport channel 35 for each press roll unit for removing machined workpieces 10 from the respective press roll unit 25.
  • the transport channels 35 can have either a circular or rectangular cross section.
  • both the pressure-rolling units 25 and the clamping gripping devices 39, the feed members 32 and the transport channels 35 are each at a uniform distance from one another.
  • FIG. 5 shows a sectional view of the device according to the invention with details of the structure of the pressure roller units 25, elements of the feed device 30 and discharge device 31 not being shown.
  • the individual workpieces 10 are machined by vertically feeding in each case two pressure-rolling rollers 26.
  • the wall thickness of the workpiece 10 is reduced in certain partial areas and the workpiece 10 is axially elongated or the workpiece 10 is drawn in radially by delivering a corresponding profile roller and a rim profile is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour produire des roues de véhicule comportant une jante en acier. Selon ce procédé, on utilise comme pièce à usiner un élément tubulaire présentant une épaisseur de paroi homogène, qui est serré dans une machine à fluotourner. Ce procédé consiste à faire avancer radialement au moins un rouleau profilé pour étirer la pièce radialement et former un profilé de jante. Pour réduire la masse de la roue à jante, il est prévu, avant de former le profilé de jante, de serrer la pièce sur un mandrin de laminage cylindrique, dont le diamètre correspond au diamètre intérieur de l'élément tubulaire. De plus, l'avancement radial et axial d'au moins un cylindre de fluotournage permet de réduire de manière définie l'épaisseur de paroi de la pièce dans des zones partielles déterminées, et d'allonger axialement la pièce, cette opération entraînant la production de zones présentant différentes épaisseurs de paroi. Enfin, le profilé de jante est formé.
EP00938668A 1999-05-26 2000-05-22 Procede et dispositif de fluotournage Expired - Lifetime EP1181119B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19924062A DE19924062A1 (de) 1999-05-26 1999-05-26 Verfahren und Vorrichtung zum Drückwalzen
DE19924062 1999-05-26
PCT/EP2000/004636 WO2000072994A2 (fr) 1999-05-26 2000-05-22 Procede et dispositif de fluotournage

Publications (2)

Publication Number Publication Date
EP1181119A2 true EP1181119A2 (fr) 2002-02-27
EP1181119B1 EP1181119B1 (fr) 2003-11-12

Family

ID=7909205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00938668A Expired - Lifetime EP1181119B1 (fr) 1999-05-26 2000-05-22 Procede et dispositif de fluotournage

Country Status (3)

Country Link
EP (1) EP1181119B1 (fr)
DE (2) DE19924062A1 (fr)
WO (1) WO2000072994A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2816532B1 (fr) 2000-11-13 2003-01-24 Michelin Soc Tech Procede de fabrication d'une jante de roue de vehicule
DE10248356A1 (de) * 2002-10-17 2004-04-29 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg Verfahren und Vorrichtung zur Herstellung einer gewichtsoptimierten Luftreifenfelge
DE102006048528A1 (de) * 2006-10-13 2008-04-17 Volkswagen Ag Stahlrad und Verfahren zu dessen Herstellung
DE102010030174A1 (de) * 2010-06-16 2011-12-22 Behr Industry Motorcycle Components Gmbh Verfahren zur Herstellung eines geschlossenen profilierten Ringes, insbesondere eines Felgenringes für ein Zweiradfahrzeug
DE102016117510A1 (de) * 2016-09-16 2018-03-22 Maxion Wheels Germany Holding Gmbh Verfahren zur Herstellung von Steilschulterfelgen, Steilschulterfelge und Fahrzeugrad hiermit für Nutzfahrzeuge
DE202016009191U1 (de) 2016-09-16 2023-08-25 Maxion Wheels Holding Gmbh Steilschulterfelge und Fahrzeugrad hiermit für Nutzfahrzeuge
CN111633141A (zh) * 2020-06-11 2020-09-08 山东小鸭精工机械有限公司 一种滚压成型装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675848A (en) * 1952-02-21 1954-04-20 Budd Co Rim-rolling machine
US3046819A (en) * 1956-02-01 1962-07-31 Mckay Machine Co Rim rolling mill
DE2651458A1 (de) * 1976-11-11 1978-05-18 Bohner & Koehle Verfahren zum herstellen von insbesondere ungeteilten felgen
DE3344797A1 (de) * 1983-12-10 1985-06-20 Th. Kieserling & Albrecht Gmbh & Co, 5650 Solingen Transportvorrichtung fuer felgenrohlinge
DE3801628A1 (de) * 1988-01-21 1989-07-27 Kieserling & Albrecht Felgenprofilieranlage
JPH0455029A (ja) * 1990-06-21 1992-02-21 Chuo Seiki Kk ホイール用リムの製造方法
DE4336315A1 (de) * 1993-10-25 1995-04-27 Kieserling & Albrecht Fertigungsstraße zur Herstellung von Ringen
US5579578A (en) * 1993-10-27 1996-12-03 Hayes Wheels International, Inc. Method for producing a rim for a vechicle wheel
WO1996025257A1 (fr) * 1995-02-13 1996-08-22 Hess Engineering, Inc. Procede de façonnage de jantes de vehicule
DE19548109A1 (de) * 1995-12-21 1997-06-26 Suedrad Autoraeder Felge und Verfahren zu ihrer Herstellung
NL1005319C2 (nl) * 1997-02-20 1998-08-24 Johan Massee Inrichting voor het bewerken van een werkstuk.
DE19808106C2 (de) * 1997-05-26 2002-02-14 Leico Werkzeugmaschb Gmbh & Co Verfahren und Vorrichtung zur Herstellung eines einteiligen Fahrzeugrades

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0072994A2 *

Also Published As

Publication number Publication date
WO2000072994A2 (fr) 2000-12-07
EP1181119B1 (fr) 2003-11-12
DE50004428D1 (de) 2003-12-18
DE19924062A1 (de) 1999-12-09
WO2000072994A3 (fr) 2001-08-30

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