EP4090543A1 - Procédé de production d'une jante de véhicule automobile en aluminium ou en alliage d'aluminium pour une roue d'un véhicule automobile et dispositif correspondant de production d'une jante de véhicule automobile - Google Patents

Procédé de production d'une jante de véhicule automobile en aluminium ou en alliage d'aluminium pour une roue d'un véhicule automobile et dispositif correspondant de production d'une jante de véhicule automobile

Info

Publication number
EP4090543A1
EP4090543A1 EP20821183.9A EP20821183A EP4090543A1 EP 4090543 A1 EP4090543 A1 EP 4090543A1 EP 20821183 A EP20821183 A EP 20821183A EP 4090543 A1 EP4090543 A1 EP 4090543A1
Authority
EP
European Patent Office
Prior art keywords
rim
motor vehicle
casting
casting mold
vehicle rim
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.)
Pending
Application number
EP20821183.9A
Other languages
German (de)
English (en)
Inventor
Jaan Mattes Reiling
Jan Gaugler
Marc Hummel
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.)
Audi AG
Original Assignee
Audi AG
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 Audi AG filed Critical Audi AG
Publication of EP4090543A1 publication Critical patent/EP4090543A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/06—Disc wheels, i.e. wheels with load-supporting disc body formed by casting
    • 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
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/10—Disc wheels, i.e. wheels with load-supporting disc body apertured to simulate spoked wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2310/00—Manufacturing methods
    • B60B2310/20—Shaping
    • B60B2310/202—Shaping by casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2360/00—Materials; Physical forms thereof
    • B60B2360/10—Metallic materials
    • B60B2360/104—Aluminum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/10—Reduction of
    • B60B2900/113—Production or maintenance time
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction 

Definitions

  • EP 0301 472 B1 is known from the prior art. This describes a manufacturing process for light metal cast wheels for passenger cars, using a near-eutectic, adelated AISi alloy which - in addition to Al - contains weight proportions of 9.5% to 12.5% silicon and alloy components such as a maximum of 0.2 %
  • the alloy contains at least 0.05 to at most 0.15% by weight of magnesium and that the wheels have a temperature - measured on their surface - of at least 380 ° C. in interior areas or areas with mass concentrations, such as The hub and bowl of wheels must be quenched in water as soon as they are removed from the casting mold.
  • the object of the invention is to propose a method for producing a motor vehicle rim made of aluminum or an aluminum alloy for a wheel of a motor vehicle, which has advantages over known methods of this type, in particular a particularly fast and inexpensive production of the motor vehicle rim with particularly filigree structures and a enables a particularly good microstructure.
  • the power vehicle rim is produced in one piece and continuously in a casting mold by die casting a casting material, wherein after the casting material has been introduced into the casting mold, a volume of the casting mold is reduced in order to compress the casting material.
  • the main components of the motor vehicle rim are the rim base, the rim center and the hub.
  • the rim base and the hub are connected to one another via the rim center, at least the rim base, the rim center and the hub being formed in one piece and made of the same material.
  • the rim well, the rim center and the hub are formed here at the same time as one another, namely during a single production step. So there is no provision for the rim well, the rim The middle and the hub must be produced separately from each other and subsequently attached to each other. Rather, the production takes place together, namely by die casting the casting material in the casting mold.
  • the motor vehicle rim has a longitudinal center axis which in particular corresponds to a longitudinal center axis of the hub and preferably coincides or at least almost coincides with a later axis of rotation of the wheel. Seen in the axial direction with respect to this central longitudinal axis, the Fel gene bed is limited on opposite sides by the outer horn and the inner horn.
  • the outer horn and the inner horn are in this respect on opposite sides of the rim well and include a tire receiving area of the motor vehicle rim in longitudinal section with respect to the longitudinal center axis between them.
  • the tire receiving area is used to receive a tire which, together with the vehicle rim, forms the wheel.
  • the tire receiving area is delimited in the radial direction inward by the rim base and in the axial direction on opposite sides by the outer horn and the inner horn.
  • the entire motor vehicle rim is delimited in the axial direction or in longitudinal section in a first direction by the outer horn and in a second direction by the inner horn, so that the outer horn and the inner horn have a total extension of the motor vehicle rim in the axial direction, corresponding to a width the motor vehicle rim, define.
  • the center of the rim viewed in the longitudinal section, ends in overlap with the outer flange or the inner flange, preferably the former, into the rim well. Because of the off-center on the Rim center attacking the rim center acts on the rim center after the Mon days of the wheel on the motor vehicle not only a force in the radial direction, but also a bending moment in the axial direction or in an imaginary plane receiving the longitudinal center axis of the motor vehicle rim. As a result, it has hitherto been necessary to make the center of the rim correspondingly massive using a large amount of material.
  • the center of the rim can alternatively also attack the center of the rim base and / or the hub.
  • the rim base preferably has a greater extent in the axial direction than the center of the rim and the hub.
  • the axial extent of the rim well is greater than the axial extent of the hub, which in turn is greater than the axial extent of the center of the rim.
  • the axial extent of the hub in relation to the axial extent of the rim well is at most 50%, at most 40%, at most 30%, at most 25% or at most 20%.
  • the axial extent of the center of the rim is, for example, at most 25%, at most 20%, at most 15%, at most 10% or at most 5%.
  • the motor vehicle rim consists continuously and of the same material from the casting material, namely the aluminum or - preferably - from the aluminum alloy. This is processed by die casting.
  • the casting mold is used, by means of which the motor vehicle rim and thus at least the rim base together with the outer flange and the inner flange, the center of the rim and the hub are formed.
  • the central recess which, by the way, can also be referred to as a wheel hub receptacle, is preferably at least partially formed during the die-casting.
  • the die casting can be carried out, for example, at normal pressure or as a vacuum die casting.
  • the casting mold is evacuated, for example, by means of a vacuum source, which for this purpose is placed in flow connection with the casting mold.
  • the casting mold is evacuated before the casting material is introduced.
  • the casting material is introduced when, in particular only when, a certain negative pressure or residual pressure is reached in the casting mold. It can additionally or alternatively be provided to evacuate the casting mold while the casting material is being introduced, i.e. to maintain the flow connection between the vacuum source and the casting mold while the casting material is being introduced into the casting mold and to continue operating the vacuum source for evacuating the casting mold.
  • a vacuum source which for this purpose is placed in flow connection with the casting mold.
  • the casting mold is evacuated before the casting material is introduced.
  • the casting material is introduced when, in particular only when, a certain negative pressure or residual pressure is reached in the casting mold. It can additionally or alternatively be provided to evacuate the casting mold while the casting material is being introduced, i.e. to maintain the flow connection between the vacuum source and the casting mold while the casting material is being introduced into the
  • the mold is first sealed by means of at least one seal, for example by means of a sealing cord, in particular a special silicone sealing cord.
  • the casting material is then dosed into a casting chamber that is fluidically connected to the casting mold.
  • the casting chamber is fluidically connected, at least at times, to a crucible in which the molten G collectma material is stored.
  • the casting mold is subjected to the negative pressure and the casting material located in the casting chamber into the casting mold pushed in, in particular by means of a pressurized piston.
  • the flow connection between the casting chamber and the crucible preferably exists at the same time, in particular still. This means that the casting chamber is evacuated while the casting material is being introduced.
  • the motor vehicle rim produced by means of die casting is characterized, for example, by a particularly small wall thickness. This is only possible through die casting.
  • the low wall thickness causes a low mass flow of the casting material in the casting mold, at least in some areas.
  • the recompaction of the casting material should therefore take place. In this way, in particular, porosity of the motor vehicle rim can be reliably avoided.
  • the introduction of the casting material begins with a reduced volume of the casting mold and the volume of the casting mold is increased during the introduction of the casting material in order to generate a suction effect on the casting material.
  • complete filling of the casting mold with the casting material is achieved particularly reliably.
  • the volume of the casting mold is again reduced for the purpose of subsequent compression, as already explained.
  • the re-compaction is effected, for example, by moving a compaction tool into the casting mold.
  • the compression tool can, for example - be carried out exactly in the axial direction, ge precisely in the radial direction or in a direction at an angle to the axial direction - with respect to the longitudinal center axis of the vehicle rim, the angle being greater than 0 ° and less than 90 ° .
  • the procedure described in the manufacture of the motor vehicle rim made light a simple, fast and inexpensive construction of the motor vehicle rim, which at the same time has an extremely filigree structure.
  • the fast production is achieved in particular by die casting, in which the casting mold is filled much more quickly than in chill casting or low-pressure casting, which is normally used for the manufacture of motor vehicle rims.
  • the die-casting can significantly increase the timing in the manufacture of the motor vehicle wheel so that a larger number of motor vehicle wheel can be produced in the same period of time.
  • the solidification time is also significantly shorter for die casting than for die casting.
  • a further development of the invention provides that the compression is carried out by driving a compression tool into the casting mold.
  • the casting mold itself has a rigid outer contour, which therefore cannot be deformed to reduce its volume.
  • the volume of the casting mold should be carried out solely by retracting the compression tool.
  • the compression tool is arranged in a first position in such a way that it takes up a first displacement volume in the casting mold, and in a second position such that it takes up a second displacement volume in the casting mold.
  • the second displacement volume here is greater than the first displacement volume.
  • the compression tool can in principle be designed as desired, as long as it causes different displacement volumes in the casting mold in the different positions.
  • the displacement tool is in the form of a piston, which is in particular cylindrical, preferably circular cylindrical.
  • the use of the compression tool has the advantage that reducing the volume of the casting mold is possible in a particularly simple manner.
  • the ring projection differs from the contour shape in particular in that it only partially overlaps an end face of the motor vehicle rim.
  • an end face of the motor vehicle rim is defined by a plate of a device for producing the motor vehicle rim, so that the plate thus delimits the casting mold.
  • the compaction tool is only moved through the plate or out of the plate into the casting mold to reduce its volume.
  • the vehicle rim formed in the casting mold rests only partially on the ring projection and also partially on the plate of the device that defines the end face of the vehicle rim.
  • a further development of the invention provides that the annular projection is retracted into the casting mold in such a way that an annular recess edged on both sides is formed in the motor vehicle rim.
  • the annular projection is preferably retracted into the casting mold in the axial direction.
  • it is arranged in such a way that it engages in an end face of the motor vehicle rim, namely in such a way that it is spaced apart from both a radially inner delimitation of the end face and a radially outer delimitation of the end face.
  • a further development of the invention provides that the contour shape continuously forms an axial end side of the motor vehicle rim and is retracted into the casting mold while reducing an extension of the motor vehicle rim in the axial direction.
  • the axial end side is to be understood as the already mentioned end face of the motor vehicle rim, which at least regionally delimits the motor vehicle rim in the axial direction.
  • By retracting the contour shape the extent of the casting mold in the axial direction and thus the extent of the motor vehicle rim is reduced.
  • an extent of the rim bed between the outer horn and the inner horn is preferably kept constant so that, for example, (only) the extent of the inner horn is reduced.
  • the casting mold has at least one first outlet opening and at least one second outlet opening arranged at a distance from the at least one first outlet opening in the axial direction with respect to a longitudinal center axis of the motor vehicle rim. has, at each of which a casting material can emerge from the casting mold.
  • the casting mold has a plurality of outlet openings, namely the at least one first outlet opening and the at least one second outlet opening.
  • the first outlet opening and the second outlet opening are arranged in multiple rows in the longitudinal section with respect to the longitudinal center axis and are in this respect spaced apart from one another in the axial direction.
  • first outlet opening and the second outlet opening are located on opposite sides of an imaginary plane running through the motor vehicle rim, the imaginary plane preferably being perpendicular to the longitudinal center axis of the motor vehicle rim.
  • the imaginary plane intersects the motor vehicle rim in the middle as seen in the longitudinal section, that is to say it is in the form of a center plane.
  • the outlet openings are preferably arranged at a distance from the imaginary plane in the axial direction.
  • the first outlet opening is at most 10%, at most 15%, at most 20% or at most 25% of a first end face of the motor vehicle rim and the second outlet opening is at most 10%, at most 15%, at most Arranged at a distance of 20% or at most 25% from a second end face of the motor vehicle rim that is different from the first end face.
  • the end faces are to be understood as meaning two end faces of the motor vehicle rim facing away from one another.
  • the first face is on a side of the outer horn facing away from the inner horn and the second face is on a side of the inner horn facing away from the outer horn.
  • the rim well usually has a small wall thickness, for example a wall thickness of at most 15 mm, at most 10 mm, at most 7.5 mm or at most 5 mm. This means that the casting material introduced into the casting mold during the die-casting process has only a low mass flow of the casting material flowing through the region of the casting mold in which the rim well is formed. In order to nevertheless achieve the uniform filling of the casting mold, the two-row arrangement of the outlet opening is implemented.
  • a further development of the invention provides that the casting mold is acted upon with negative pressure during the die-casting at the first outlet opening and / or the second outlet opening, in particular at the same time or with a time delay.
  • the evacuation of the casting mold which takes place before the casting material is introduced into the casting mold, also takes place via the first outlet opening and / or the second outlet opening. Accordingly, no further connections of the vacuum source to the casting mold are necessary in addition to the first outlet opening and the second outlet opening.
  • the application of the first outlet opening and the second outlet opening during the die-casting or during the introduction of the casting material into the casting mold can take place in different ways.
  • the two outlet openings are acted upon by the negative pressure at the same time.
  • it can also be time-shifted Applying can be provided in which, for example, the first outlet opening is initially acted upon by the negative pressure, whereas the flow connection between the second outlet opening and the negative pressure source is interrupted. Subsequently, the flow connection between the first outlet opening and the negative pressure source is interrupted and instead the flow connection is established between the second outlet opening and the negative pressure source so that the negative pressure is now applied to the second outlet opening.
  • the application of negative pressure to the first outlet opening is then set, in particular by interrupting the flow connection between the negative pressure source and the first outlet opening.
  • the second outlet opening is subsequently subjected to the negative pressure, namely preferably until the casting mold is completely filled with the casting material, i.e. the casting material has reached the second outlet opening or a certain amount of the casting material has emerged from the casting mold through the second outlet opening. This in turn achieves a particularly reliable filling of the casting mold with the casting material.
  • a further development of the invention provides that the die-casting is carried out in such a way that the motor vehicle rim has a small wall thickness of at most 15 mm, at least in some areas, and / or has a curvature with a small radius of curvature of at most 4 mm, and / or an axial one Direction and in the radial direction and / or in the axial direction and in the tangential direction with respect to a longitudinal center axis of the motor vehicle rim extending demolding surface which lies completely in an imaginary plane, the plane with the longitudinal center axis enclosing an angle that is more than 0 ° and at most 4 °.
  • the motor vehicle rim produced by means of die casting is characterized by a particularly small wall thickness and / or a curvature with a particularly small radius of curvature and / or by the presence of the demolding surface.
  • the wall thickness is to be understood as the thickness of the wall of the motor vehicle rim at at least one point.
  • the small wall thickness can therefore be present, for example, on the rim base, the outer flange, the inner flange, the center of the rim and / or the hub.
  • the small wall thickness is particularly preferably at the center of the rim.
  • the small wall thickness represents the greatest wall thickness, for example the greatest wall thickness of the outer horn, the greatest wall thickness of the inner horn and / or the greatest wall thickness of the center of the rim. Of course, it can also be the greatest wall thickness of the rim well and / or the hub.
  • the small wall thickness is at most 15 mm, at most 10 mm, at most 7.5 mm or at most 5 mm, but is preferably smaller. It is therefore, for example, at most 4 mm, at most 3 mm, at most 2 mm or at most 1.5 mm.
  • the small wall thickness is particularly preferably at least 1.5 mm or at least 2 mm.
  • the small wall thickness is, for example, at least 1.5 mm and at most 5 mm, at least 1.5 mm and at most 4 mm, at least 1.5 mm and at most 3 mm, at least 1.5 mm and at most 2 mm or in about or exactly 1.5 mm.
  • it can also be at least 2 mm and at most 5 mm, at least 2 mm and at most 4 mm, at least 2 mm and at most 3 mm or exactly 2 mm.
  • the curvature is present with the small radius of curvature.
  • the curvature is a curvature of an outer surface or an outer peripheral surface of the motor vehicle rim.
  • the outer surface delimits a wall of the motor vehicle rim to the outside.
  • the curvature can be present at any point on the motor vehicle rim, for example on the rim base, the outer flange, the inner flange, the center of the rim and / or the hub.
  • the curvature is in particular a transition curvature between two surfaces, which - in section seen - are angled to each other and are present, for example, as flat surfaces.
  • the motor vehicle rim can have the deformation surface.
  • the demolding surface is to be understood as a flat surface which rests directly on the casting mold during die casting and along which the power vehicle rim is removed from the casting mold after die casting.
  • the demolding surface has an extension at least in the axial direction and in the radial direction and / or - additionally or alternatively - in the axial direction and in the tangential direction, in each case with respect to the longitudinal center axis of the vehicle rim. In any case, the demolding surface thus extends in two directions perpendicular to one another and to this extent lies completely in the imaginary plane.
  • the motor vehicle rim is demolded in the same direction.
  • a part of the casting mold is displaced after die casting in the direction of the longitudinal center axis, that is, in the axial direction, to open the casting mold and to remove the motor vehicle rim from the casting mold.
  • a casting mold surface of the casting mold which lies against the demolding surface during the die-casting and which forms this is displaced along the longitudinal center axis after the die-casting.
  • a design Forming angle that is, an angle between the demolding surface and the longitudinal center axis, be at least 5 ° in order to ensure proper demolding.
  • an angle of no more than 4 ° is provided.
  • the angle is at most 3 °, at most 2.0 °, at most 1.5 °, at most 1.0 ° or at most 0.5 °.
  • the smaller angles of at most 2.0 ° and less are preferred here.
  • the center of the rim is formed with several spokes spaced apart from one another in the circumferential direction with respect to a longitudinal center axis of the motor vehicle rim.
  • Such a design from the center of the rim is used in particular to reduce the weight of the motor vehicle rim, but also to achieve better damping.
  • the center of the rim is not solid and continuous in the circumferential direction, but is composed of the plurality of spokes which are arranged at a distance from one another in the circumferential direction.
  • Each of the plurality of spokes preferably extends from the hub in the radial direction up to the rim base, that is to say connects the hub and the rim base to one another.
  • At least three spokes, at least four spokes, at least five spokes or at least six spokes are provided.
  • each de of the spokes extends in the circumferential direction over a maximum of 30 ° or less, preferably be a maximum of 15 ° or a maximum of 10 °.
  • the spokes have a constant extension in the circumferential direction, that is to say starting from the rim well up to the hub.
  • branching of at least one of the spokes or several or each of the spokes can also be provided, so that the respective spoke is divided into several partial spokes.
  • the spoke starting from the hub, the spoke initially extends outward in the radial direction and is divided at a point of division into several partial spokes, which run away from one another, in particular in the circumferential direction. After the dividing point, the partial spokes run at a distance from one another up to the rim base and attack it at a distance from one another.
  • the invention further relates to a device for producing a motor vehicle rim made of aluminum or an aluminum alloy for a wheel of a motor vehicle, in particular for carrying out the method according to the statements in this description, the motor vehicle rim being limited on opposite sides by an outer horn and an inner horn Rim bed, a hub with a central recess and a bolt circle and a the rim bed and the hub with each other ver binding, in particular in a longitudinal section eccentrically on the rim bed to attacking the center of the rim.
  • the device is provided and designed to produce the motor vehicle rim in one piece and continuously in a casting mold by die-casting a casting material, wherein after the casting material has been introduced into the casting mold Volume of the casting mold for recompaction of the casting material is reduced.
  • FIG. 1 shows a schematic longitudinal section through a motor vehicle rim along a central longitudinal axis of the motor vehicle rim.
  • the figure shows a schematic sectional illustration through a device 1 for producing motor vehicle rims 2 for a motor vehicle.
  • Each of the motor vehicle rims 2 has a rim base 3, a rim center 4 and a hub 5 as essential components.
  • the device 1 and the motor vehicle rim 2 are shown in longitudinal section with respect to a longitudinal center axis 6 of the motor vehicle rim 2.
  • the rim base 3 is limited in the axial direction on the one hand by an outer flange 7 and on the other hand by an inner flange 8, which extends from the rim base 3 in the radial direction with respect to Longitudinal central axis 6 extend outward.
  • the rim base 3 and the hub 5 are connected to one another via the rim center 4.
  • the rim center 4 thus engages both the rim base 3 and the hub 5 and extends from the hub 5 to the rim base 3.
  • the hub 5 has a central recess which plus the longitudinal center axis 6 is present centrally in the hub 5.
  • the hub 5 has a bolt circle with several bores, which each serve to receive a fastening means by means of which the power vehicle rim 2 can be fastened to a wheel hub of the motor vehicle or is fastened.
  • the center of the rim 4 preferably has several spokes, not shown here, which are arranged at a distance from one another in the circumferential direction. Each of the spokes extends from the hub 5 to the rim well 3.
  • the manufacture of the motor vehicle rim 2 takes place with the aid of the device 1, which represents a casting tool.
  • the device 1 has a casting mold 9 which is delimited, for example, on opposite sides by a first plate 10 and a second plate 11.
  • the two plates 10 and 11 limit the mold 9 in the axial direction with respect to the longitudinal center axis 6 on opposite sides.
  • a slide 12 is arranged between the two plates 10 and 11 and delimits the casting mold 9 in the radial direction with respect to the longitudinal center axis 6.
  • the plates 10 and 11 are each displaceable in the axial direction with respect to the longitudinal center axis 6, whereas the slide 12 is displaceable in ra dialer direction.
  • the slide 12 is preferably composed of a plurality of partial slides 13 and 14 which can be displaced independently of one another or at least can be displaced away from one another. Such a configuration of the device 1 enables the manufactured motor vehicle rim 2 to be easily removed from the mold.
  • the compaction tool 16 is particularly preferably used for re-compacting the casting material in the area of the rim well 3 and / or - preferably - on the inner flange 8.
  • the compaction tool 16 or the annular projection 17 is accordingly introduced into that area of the casting mold 9 in which the rim well 3 or the inner horn 8 are present that an annular recess is embossed in the motor vehicle rim 2, namely in the inner horn 8.
  • the annular recess should be bordered on both sides when viewed in the radial direction, so that the annular recess is present in the end face of the motor vehicle rim 2, in particular in the manner of a groove. A particularly effective subsequent compression of the casting material is achieved in this way.
  • the device 1 is designed, for example, as a two-plate casting tool or as a three-plate casting tool.
  • the plates 10 and 11 shown there can therefore be a further plate which is arranged in particular on the side of the first plate 10 facing away from the second plate 11.
  • the sprue channel 15 runs through the further plate or extends through it completely.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

L'invention concerne un procédé de production d'une jante de véhicule automobile (2) en aluminium ou en alliage d'aluminium pour une roue d'un véhicule automobile, la jante de véhicule automobile (2) ayant une base de jante (3) délimitée sur des côtés opposés par un pavillon externe (7) et un pavillon interne (8), un moyeu (5) comportant un évidement central et un cercle de trous, et un centre de jante (4) reliant la base de jante (3) et le moyeu (5) l'un à l'autre. Selon l'invention, la jante de véhicule automobile (2) est réalisée d'un seul tenant et en continu dans un moule de coulée par coulée sous pression d'un matériau de coulée, et une fois que le matériau de coulée a été introduit dans le moule de coulée (9), un volume du moule de coulée (9) est réduit pour le post-compactage du matériau de coulée. L'invention concerne en outre un dispositif (1) de production d'une jante de véhicule automobile (2).
EP20821183.9A 2020-01-14 2020-12-08 Procédé de production d'une jante de véhicule automobile en aluminium ou en alliage d'aluminium pour une roue d'un véhicule automobile et dispositif correspondant de production d'une jante de véhicule automobile Pending EP4090543A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020100702.7A DE102020100702A1 (de) 2020-01-14 2020-01-14 Verfahren zum Herstellen einer Kraftwagenfelge aus Aluminium oder einer Aluminiumlegierung für ein Rad eines Kraftfahrzeugs sowie entsprechende Vorrichtung zum Herstellen einer Kraftwagenfelge
PCT/EP2020/085021 WO2021144072A1 (fr) 2020-01-14 2020-12-08 Procédé de production d'une jante de véhicule automobile en aluminium ou en alliage d'aluminium pour une roue d'un véhicule automobile et dispositif correspondant de production d'une jante de véhicule automobile

Publications (1)

Publication Number Publication Date
EP4090543A1 true EP4090543A1 (fr) 2022-11-23

Family

ID=73790099

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DE102022115993A1 (de) 2022-06-28 2023-12-28 Audi Aktiengesellschaft Verfahren und Gießform zum Herstellen eines Rads für ein Kraftfahrzeug

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US20230022011A1 (en) 2023-01-26
CN115003518A (zh) 2022-09-02
WO2021144072A1 (fr) 2021-07-22
US11911818B2 (en) 2024-02-27
DE102020100702A1 (de) 2021-07-15

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