EP1513636A1 - Method for the production of a brake disk and brake disk - Google Patents

Method for the production of a brake disk and brake disk

Info

Publication number
EP1513636A1
EP1513636A1 EP03725113A EP03725113A EP1513636A1 EP 1513636 A1 EP1513636 A1 EP 1513636A1 EP 03725113 A EP03725113 A EP 03725113A EP 03725113 A EP03725113 A EP 03725113A EP 1513636 A1 EP1513636 A1 EP 1513636A1
Authority
EP
European Patent Office
Prior art keywords
brake disc
bodies
friction ring
core
casting
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Withdrawn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
EP03725113A
Other languages
German (de)
French (fr)
Inventor
Siegfried Botsch
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1513636A1 publication Critical patent/EP1513636A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/12—Casting in, on, or around objects which form part of the product for making objects, e.g. hinges, with parts which are movable relatively to one another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • F16D2065/1328—Structure internal cavities, e.g. cooling channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0007—Casting

Definitions

  • the invention relates to a method for producing a brake disc according to claim 1 and a brake disc according to the preamble of claim 6.
  • Shielding is an axial distortion of the brake disc that is due to radial thermal expansion.
  • DE 199 31 140 AI describes, for example, the production of a composite cast brake disc from a pot and a friction ring.
  • a pot is provided with radial retaining bolts and placed in a mold. Then the pot is cast in the area of the retaining bolts and the friction ring is formed. Although there is a separation between the pot and the friction ring with this brake disc, the radial spread is restricted by the rigid retaining bolts.
  • the object of the invention is to provide a method for producing a brake disc and a brake disc, by means of which the shielding is significantly reduced and which is inexpensive to manufacture for large-scale production.
  • the solution consists in a method according to claim 1 and in a brake disc according to claim 6.
  • nested bodies which are arranged to be axially movable relative to one another are introduced into a casting core.
  • the nested bodies are introduced into the casting core in such a way that their axis of movement with respect to the brake disc points largely radially outwards.
  • the casting core is brought into a casting mold, the casting mold is filled in the conventional manner with liquid metal, preferably iron-based. After solidification, the core is removed again and the bodies remain at least partially cast in as connecting links between a friction ring and a brake disk cup.
  • the brake disc chamber and the friction ring are decoupled from one another by using the method according to the invention, which reduces the shielding, and they can be produced and / or joined together in one work step by the composite casting, which significantly reduces the production costs. In principle, no additional connecting means are necessary.
  • the core and the casting mold are shaped in such a way that the filling is carried out together, preferably via a gate. In the solidified state, there remains a bridge between the brake disc chamber and the friction ring, which is then preferably removed by machining. A particularly homogeneous and void-free structure can be achieved with this filling method.
  • the nested bodies are preferably placed in a core mold, followed by core shooting, the bodies being fixed by the shaped and hardened core. This process can be automated well and is therefore inexpensive.
  • a further solution to the problem consists in a brake disk according to the invention.
  • the brake disk is characterized in that a brake disk chamber and a friction ring are connected by two or more pairs of two bodies which are inserted one inside the other and are axially movable with respect to one another.
  • the brake disc chamber is connected to one of the bodies inserted into each other, the friction ring to the other body. Since both bodies are axially movable with respect to one another, the brake disc chamber and the friction ring can also expand radially relative to one another. In this way, the shielding between the brake disc chamber and Friction ring significantly reduced.
  • the resulting advantages are less brake noise, the reduction of brake pad wear and the reduction of micro cracks in the friction ring, which are caused by the shielding. In particular, the reduction of the micro cracks leads to a longer service life of the brake disc.
  • the nested bodies are preferably cast in between the brake disc chamber and the friction ring. There is thus a firm connection between the components.
  • the interlocking bodies preferably have a round, particularly preferably a circular cross section. Accordingly, their geometric shape is designed as a cylinder, an outer body being designed as a hollow cylinder (sleeve) and an inner body likewise being designed as a hollow cylinder or as a solid cylinder (bolt). Such an arrangement is advantageous for unhindered mobility of the bodies relative to one another.
  • FIG. 1 shows a cross section through a cast brake disc with a core
  • FIG. 2 shows a cross section through a brake disc according to FIG. 1 after machining
  • FIG. 3 shows a longitudinal section through a brake disc according to FIG.
  • Fig. 4 shows a longitudinal section through a brake disc.
  • a core shape In a core shape are ten pairs of two bodies, one inside the other, in the form of pairs of cylindrical sleeves ring-shaped (8, 10 in Fig. 1) inserted.
  • a core sand is shot into the core mold and cured.
  • a hardened casting core (core) encloses the sleeve pairs 8, 10 in some areas, as a result of which the sleeve pairs 8, 10 are fixed in the core and become an integral part of the core.
  • the core is placed in a mold, the brake disc is poured out according to a known method.
  • the casting takes place from an underside of a friction ring area, the melt flows in ascending order via bridge channels which form the bridges 12 in the cast brake disc to form a pot area.
  • the cast brake disc is then cooled in a defined manner.
  • FIG. 1 shows a cross section through a brake disk 2 in the raw state after casting, the core 14 still being enclosed by the brake disk 2.
  • the brake disc 2 has a brake disc pot (pot) 4 and a friction ring 6. Pot 4 and friction ring 6 are connected in this state via bridges 12.
  • the core 14 is shaped so that there is a cavity in the inner sleeve 10, which is poured out by a pin 18.
  • the pin 18 is in a fixed connection to the inner sleeve 10.
  • the friction ring 6, however, is in a fixed connection to the outer sleeve 8.
  • FIG. 2 shows the finished brake disc 2 from FIG. 1.
  • the pot 4 is now only connected to the friction ring via the sleeves 8 and 10.
  • the sleeves 8 and 10 are axially movable relative to each other, which allows radial expansion with respect to the cup 4 and the friction ring 6 in the direction of the arrow (FIG. 2).
  • a gap 24 serves to compensate and to discharge cooling air passed through the friction ring 6.
  • the open cavities 19 in the center of the friction ring 6 form an internal ventilation of the brake disc 2.
  • FIG. 3 shows a section along the line II in FIG. 2. Exemplary embodiments for webs 20 or knobs 22 are shown here, through which the cavities 19 of the internal ventilation are formed.
  • the casting 16 is shown, through which the sleeve 8 is cast into the friction ring 6. The torque is transmitted from the friction ring 6 to the pot 4 through the cast pin 18.
  • the nested bodies are designed in the form of an outer sleeve 8 and an inner bolt 26.
  • the bolt 26 is cast in the area of the pot 4.
  • the torque is transmitted by the bolt 26 analogously to the cast pin 18 from FIG. 3.
  • the nested bodies are shown with round cross sections.
  • all other cross sections are basically conceivable, but the cross sections of the bodies should be concentric and not change along an axis of movement.
  • a rail connection e.g. B. in the form of a dovetail connection.
  • brake disc pot is generally used for a holding part that is used to connect the brake disc to a vehicle.
  • the brake disc is preferably cast from an iron-based material, and accordingly the connecting bodies are also preferably made from an iron material.
  • the invention is also applicable to light metal casting.
  • the individual components of the brake disc can consist of different materials.
  • the bridges shown in FIG. 2 run exemplarily on an upper and lower friction ring side. They can be circumferential or interrupted and in principle be arranged at all points of contact between pot 4 and friction ring 6.
  • the arrangement of the bodies (8, 10, 26) inserted into one another is designed in such a way that they are arranged essentially in the area of the friction ring.
  • an outer one of the nested bodies is encased in a pot and a connection analogous to the cast pin 18 in FIG. 3 extends from a friction ring to the pot and is there connected to an inner one of the nested bodies.
  • a connection analogous to the pin 26 in FIG. 4 from the friction ring to the pot is expedient, the pin being cast around in the friction ring and being movably mounted in a sleeve cast into the pot.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to a method for the production of a brake disk (2) and a brake disk (2) which are characterized by the following features: several pairs of inserted bushings (8, 10) other are placed into a core box. The core (14) is closed about the bushings (8,10) in such a way that they form an integral component of the core (14). The core (14) is inserted into a casting tool and the brake disk is cast. After the core (14) is removed, the brake disk chamber (4) and the friction ring (6) are decoupled from each other and can expand in relation to each other without shielding the brake disk (2).

Description

Verfahren zur Herstellung einer Bremsscheibe und BremsscheibeMethod of manufacturing a brake disc and brake disc
Die Erfindung betrifft ein Verfahren zur Herstellung einer Bremsscheibe nach Anspruch 1 und eine Bremsscheibe nach dem Oberbegriff des Anspruchs 6.The invention relates to a method for producing a brake disc according to claim 1 and a brake disc according to the preamble of claim 6.
Bremsgeräusche und übermäßiger Verschleiß bei Scheibenbrems- systemen sind häufig auf das Phänomen der Schirmung zurückzuführen. Unter Schirmung versteht man einen axialen Verzug der Bremsscheibe, der auf eine radiale Wärmeausdehnung zurückzuführen ist.Braking noises and excessive wear in disc brake systems are often due to the phenomenon of shielding. Shielding is an axial distortion of the brake disc that is due to radial thermal expansion.
Durch eine Entkoppelung von Reibring und Bremsscheibentopf kann die Schirmung deutlich reduziert werden. Die DE 199 31 140 AI beschreibt beispielsweise die Herstellung ein Verbund- gussbremsscheibe aus einem Topf und einem Reibring. Hierbei wird ein Topf mit radialen Haltebolzen versehen und in eine Gießform gelegt. Anschließend wird der Topf im Bereich der Haltebolzen umgössen und der Reibring ausgebildet. Es liegt zwar bei dieser Bremsscheibe eine Trennung zwischen Topf und Reibring vor, die radiale Ausbreitung ist jedoch durch die starren Haltebolzen eingeschränkt.The shielding can be significantly reduced by decoupling the friction ring and brake disc chamber. DE 199 31 140 AI describes, for example, the production of a composite cast brake disc from a pot and a friction ring. Here, a pot is provided with radial retaining bolts and placed in a mold. Then the pot is cast in the area of the retaining bolts and the friction ring is formed. Although there is a separation between the pot and the friction ring with this brake disc, the radial spread is restricted by the rigid retaining bolts.
Die DE 195 05 112 AI beschreibt ein Verfahren zum Verbundgießen einer Bremsscheibe. Hierbei wird zwischen Topf und Reibring eine zahnförmiges Metallband eingelegt, dieses wird umgössen und anschließend wieder freigelegt. Da das Metallband mit dem Guss keine Verbindung eingeht, ist nach dem Freilegen des Bandes der Topf und der Reibring voneinander entkoppelt . Nachteilig hierbei ist das sehr aufwändige Verfahren und eine spielfreie axiale Sicherung ist nur schwer zu gewährleisten.DE 195 05 112 AI describes a method for composite casting of a brake disc. Here, a tooth-shaped metal band is inserted between the pot and the friction ring, this is cast around and then exposed again. Since the metal strip does not make any connection with the casting, it is after the exposure the belt, the pot and the friction ring are decoupled from each other. The disadvantage here is the very complex process and a backlash-free axial securing is difficult to guarantee.
Aufgabe der Erfindung ist es, eine Verfahren zur Herstellung einer Bremsscheibe und eine Bremsscheibe bereitzustellen, durch die die Schirmung deutlich verringert wird und die großserientauglich günstig herzustellen ist.The object of the invention is to provide a method for producing a brake disc and a brake disc, by means of which the shielding is significantly reduced and which is inexpensive to manufacture for large-scale production.
Die Lösung besteht in einem Verfahren nach Anspruch 1 sowie in einer Bremsscheibe nach Anspruch 6.The solution consists in a method according to claim 1 and in a brake disc according to claim 6.
Gemäß dem erfindungsgemäßen Verfahren werden mehrere Paare von jeweils zwei ineinander gesteckten Körpern, die axial zueinander beweglich angeordnet sind in einen Gießkern eingebracht . Die ineinander gesteckten Körper werden im Gießkern so eingebracht, dass ihre Bewegungsachse bezügliche der Bremsscheibe weitgehend radial nach außen zeigt .According to the method according to the invention, several pairs of two nested bodies which are arranged to be axially movable relative to one another are introduced into a casting core. The nested bodies are introduced into the casting core in such a way that their axis of movement with respect to the brake disc points largely radially outwards.
Der Gießkern wird in eine Gießform gebracht, die Gießform wird nach herkömmlicher Art mit flüssigem Metall, bevorzugt auf Eisenbasis gefüllt. Nach einem Erstarren wird der Kern wieder entfernt und die Körper verbleiben zumindest teilweise eingegossen als Verbindungsglieder zwischen einem Reibring und einem Bremsscheibentopf .The casting core is brought into a casting mold, the casting mold is filled in the conventional manner with liquid metal, preferably iron-based. After solidification, the core is removed again and the bodies remain at least partially cast in as connecting links between a friction ring and a brake disk cup.
Bremsscheibentopf und Reibring sind durch Anwendung des erfindungsgemäßen Verfahrens voneinander entkoppelt wodurch die Schirmung verringert wird und sie können durch den Verbund- guss in einem Arbeitsschritt hergestellt und/oder zusammengefügt werden wodurch die Produktionskosten deutlich reduziert werden. Es sind grundsätzlich keine zusätzlichen Verbindungsmittel notwendig.The brake disc chamber and the friction ring are decoupled from one another by using the method according to the invention, which reduces the shielding, and they can be produced and / or joined together in one work step by the composite casting, which significantly reduces the production costs. In principle, no additional connecting means are necessary.
Es ist prinzipiell möglich, eine vorgefertigte Einzelkomponente der Bremsscheibe, den Bremsscheibentopf oder den Reibring in die Gießform einzulegen und beim Gießen durch die in- einander gesteckten Körper zu verbinden. Ein besonderer Vorteil des Verfahrens besteht jedoch darin, dass der Bremsscheibentopf und der Reibring in einem Gießvorgang gegossen werden und zusammengefügt werden.In principle, it is possible to insert a prefabricated individual component of the brake disc, the brake disc chamber or the friction ring into the mold and when casting through the internal to connect each other's stuck bodies. A particular advantage of the method, however, is that the brake disc chamber and the friction ring are cast and joined in one casting process.
Der Kern und die Gießform sind so geformt, dass die Befullung gemeinsam über bevorzugt einen Anschnitt erfolgt . Im erstarrten Zustand bleibt somit eine Brücke zwischen Bremsscheibentopf und Reibring bestehen, die anschließend bevorzugt durch spanende Bearbeitung entfernt wird. Durch diese Befül- lungsmethode kann ein besonders homogenes und lunkerarmes Ge- füge erzielt werden.The core and the casting mold are shaped in such a way that the filling is carried out together, preferably via a gate. In the solidified state, there remains a bridge between the brake disc chamber and the friction ring, which is then preferably removed by machining. A particularly homogeneous and void-free structure can be achieved with this filling method.
Es ist in einer weiteren Ausgestaltung des erfindungsgemäßen Verfahrens ebenso möglich, den Bremsscheibentopf und den Reibring durch einen verzweigten Anschnitt getrennt von einander zu speisen. Hierbei ist keine Brücke notwendig, der/die später entfernt werden muss, der gießtechnische Aufwand ist jedoch etwas höher.In a further embodiment of the method according to the invention, it is also possible to feed the brake disc chamber and the friction ring separately from one another by means of a branched gate. There is no need for a bridge that has to be removed later, but the casting effort is somewhat higher.
Bevorzugt werden die ineinander gesteckten Körper in eine Kernform eingelegt, anschließend erfolgt ein Kernschießen, wobei die Körper durch den geformten und ausgehärteten Kern fixiert werden. Dieses Verfahren ist gut automatisierbar und deshalb kostengünstig.The nested bodies are preferably placed in a core mold, followed by core shooting, the bodies being fixed by the shaped and hardened core. This process can be automated well and is therefore inexpensive.
Eine weitere Lösung der Aufgabe besteht in einer erfindungs- gemäßen Bremsscheibe nach Anspruch 6. Die Bremsscheibe zeichnet sich dadurch aus, dass ein Bremsscheibentopf und ein Reibring durch zwei oder mehrere Paare von jeweils zwei ineinander gesteckte, axial zueinander bewegliche Körper verbunden sind. Der Bremsscheibentopf steht dabei jeweils mit dem einen der ineinander gesteckten Körper in Verbindung, der Reibring mit dem anderen Körper. Da beide Körper axial zueinander beweglich sind, können sich auch der Bremsscheibentopf und der Reibring relativ zueinander radial ausdehnen. Auf diese Weise wird die Schirmung zwischen Bremsscheibentopf und Reibring deutlich reduziert. Die hieraus resultierenden Vorteile sind geringere Bremsgeräusche, die Reduzierung eines Bremsbelagverschleißes und die Reduzierung von Mikrorissen im Reibring, die von der Schirmung hervorgerufen werden. Insbesondere die Reduzierung der Mikrorisse führt zu einer höheren Lebensdauer der Bremsscheibe.A further solution to the problem consists in a brake disk according to the invention. The brake disk is characterized in that a brake disk chamber and a friction ring are connected by two or more pairs of two bodies which are inserted one inside the other and are axially movable with respect to one another. The brake disc chamber is connected to one of the bodies inserted into each other, the friction ring to the other body. Since both bodies are axially movable with respect to one another, the brake disc chamber and the friction ring can also expand radially relative to one another. In this way, the shielding between the brake disc chamber and Friction ring significantly reduced. The resulting advantages are less brake noise, the reduction of brake pad wear and the reduction of micro cracks in the friction ring, which are caused by the shielding. In particular, the reduction of the micro cracks leads to a longer service life of the brake disc.
Die ineinander gesteckten Körper sind bevorzugt zwischen Bremsscheibentopf und Reibring eingegossen. Somit liegt zwischen den Komponenten eine feste Verbindung vor.The nested bodies are preferably cast in between the brake disc chamber and the friction ring. There is thus a firm connection between the components.
Die ineinander gesteckten Körper weisen bevorzugt einen runden, besonders bevorzugt einen kreisförmigen Querschnitt auf. Entsprechend ist ihre geometrische Form als Zylinder ausgestaltet, wobei ein äußerer Körper als Hohlzylinder (Hülse) und ein innerer Körper ebenfalls als Hohlzylinder oder als Voll- zylinder (Bolzen) ausgestaltet ist. Eine derartige Anordnung ist vorteilhaft für eine ungehinderte Bewegbarkeit der Körper zueinander.The interlocking bodies preferably have a round, particularly preferably a circular cross section. Accordingly, their geometric shape is designed as a cylinder, an outer body being designed as a hollow cylinder (sleeve) and an inner body likewise being designed as a hollow cylinder or as a solid cylinder (bolt). Such an arrangement is advantageous for unhindered mobility of the bodies relative to one another.
Vorteilhafte Ausgestaltungsformen der Erfindung werden an Hand der folgenden Figuren und dem Beispiel näher erläutert.Advantageous embodiments of the invention are explained in more detail with reference to the following figures and the example.
Dabei zeigen:Show:
Fig. 1 einen Querschnitt durch eine gegossene Bremsscheibe mit Kern, Fig. 2 einen Querschnitt durch eine Bremsscheibe nach Fig. 1 nach Bearbeitung, Fig. 3 einen Längsschnitt durch eine Bremsscheibe nach Fig.1 shows a cross section through a cast brake disc with a core, FIG. 2 shows a cross section through a brake disc according to FIG. 1 after machining, FIG. 3 shows a longitudinal section through a brake disc according to FIG.
2, Fig. 4 einen Längsschnitt durch eine Bremsscheibe.2, Fig. 4 shows a longitudinal section through a brake disc.
Beispielexample
In eine Kernform werden zehn Paare von jeweils zwei, ineinander gesteckten Körpern in Form von zylindrischen Hülsenpaare ringförmig (8, 10 in Fig. 1) eingelegt. Ein Kernsand wird in die Kernform geschossen und ausgehärtet . Ein ausgehärtete Gießkern (Kern) umschließt die Hülsenpaare 8, 10 bereichsweise, wodurch die Hülsenpaare 8, 10 im Kern fixiert werden und zu einem integraler Bestandteil des Kerns werden.In a core shape are ten pairs of two bodies, one inside the other, in the form of pairs of cylindrical sleeves ring-shaped (8, 10 in Fig. 1) inserted. A core sand is shot into the core mold and cured. A hardened casting core (core) encloses the sleeve pairs 8, 10 in some areas, as a result of which the sleeve pairs 8, 10 are fixed in the core and become an integral part of the core.
Der Kern wird in eine Gießform eingelegt, die Bremsscheibe wird nach einem an sich bekannten Verfahren ausgegossen. Das Angießen erfolgt von einer Unterseite eines Reibringbereichs, die Schmelze fließt aufsteigend über Brückenkanäle die in der gegossenen Bremsscheibe die Brücken 12 bilden zu einem Topf- bereich. Anschließend wird die gegossene Bremsscheibe definiert abgekühlt.The core is placed in a mold, the brake disc is poured out according to a known method. The casting takes place from an underside of a friction ring area, the melt flows in ascending order via bridge channels which form the bridges 12 in the cast brake disc to form a pot area. The cast brake disc is then cooled in a defined manner.
In Fig. 1 ist ein Quererschnitt durch eine Bremsscheibe 2 im Rohzustand nach dem Gießen dargestellt, wobei der Kern 14 noch von der Bremsscheibe 2 umschlossen wird. Die Bremsscheibe 2 weist einen Bremsscheibentopf (Topf) 4 und einen Reibring 6 auf. Topf 4 und Reibring 6 sind in diesem Zustand über Brücken 12 verbunden.1 shows a cross section through a brake disk 2 in the raw state after casting, the core 14 still being enclosed by the brake disk 2. The brake disc 2 has a brake disc pot (pot) 4 and a friction ring 6. Pot 4 and friction ring 6 are connected in this state via bridges 12.
Der Kern 14 ist so geformt, dass sich in der inneren Hülse 10 ein Hohlraum befindet, der durch einen Zapfen 18 ausgegossen wird. Der Zapfen 18 steht in fester Verbindung zur inneren Hülse 10. Der Reibring 6 hingegen steht in fester Verbindung mit der äußeren Hülse 8.The core 14 is shaped so that there is a cavity in the inner sleeve 10, which is poured out by a pin 18. The pin 18 is in a fixed connection to the inner sleeve 10. The friction ring 6, however, is in a fixed connection to the outer sleeve 8.
In einem nächsten Arbeitsschritt wird der Kern 14 entfernt und die Brücken 12 abgedreht. In Fig. 2 ist die endbearbeitete Bremsscheibe 2 aus Fig. 1 dargestellt. Der Topf 4 ist nun nur noch über die Hülsen 8 und 10 mit dem Reibring verbunden. Die Hülse 8 und 10 sind axial zu einander beweglich, was eine radiale Ausdehnung bezüglich Topf 4 und Reibring 6 in Pfeilrichtung (Fig. 2) zulässt. Bei der radialen Bewegung von Topf 4 und Reibring 6 dient ein Spalt 24 als Ausgleich und zur Ableitung einer durch den Reibring 6 geleiteten Kühlungsluft. Die offenen Hohlräume 19 im Zentrum des Reibrings 6 bilden eine Innenbelüftung der Bremsscheibe 2.In a next step, the core 14 is removed and the bridges 12 are twisted off. 2 shows the finished brake disc 2 from FIG. 1. The pot 4 is now only connected to the friction ring via the sleeves 8 and 10. The sleeves 8 and 10 are axially movable relative to each other, which allows radial expansion with respect to the cup 4 and the friction ring 6 in the direction of the arrow (FIG. 2). When the pot 4 and the friction ring 6 move radially, a gap 24 serves to compensate and to discharge cooling air passed through the friction ring 6. The open cavities 19 in the center of the friction ring 6 form an internal ventilation of the brake disc 2.
In Fig. 3 ist ein Schnitt entlang der Linie II in Fig. 2 dargestellt. Exemplarisch sind hier Ausführungsformen für Stege 20 oder Noppen 22 dargestellt, durch die die Hohlräume 19 der Innenbelüftung gebildet werden. In der Ansicht der Fig. 2 ist der Umguss 16 dargestellt, durch den die Hülse 8 in den Reibring 6 eingegossen ist. Durch den gegossenen Zapfen 18 wird das Drehmoment vom Reibring 6 auf den Topf 4 übertragen.3 shows a section along the line II in FIG. 2. Exemplary embodiments for webs 20 or knobs 22 are shown here, through which the cavities 19 of the internal ventilation are formed. In the view of FIG. 2, the casting 16 is shown, through which the sleeve 8 is cast into the friction ring 6. The torque is transmitted from the friction ring 6 to the pot 4 through the cast pin 18.
In einer weiteren Ausgestaltungsform der Erfindung nach Fig. 4 sind die ineinander gesteckten Körper in Form einer äußeren Hülse 8 und eines inneren Bolzens 26 ausgestaltet. Der Bolzen 26 ist im Bereich des Topfes 4 eingegossen. Die Übertragung des Drehmomentes erfolgt durch den Bolzen 26 analog dem gegossenen Zapfen 18 aus den Fig. 3.In a further embodiment of the invention according to FIG. 4, the nested bodies are designed in the form of an outer sleeve 8 and an inner bolt 26. The bolt 26 is cast in the area of the pot 4. The torque is transmitted by the bolt 26 analogously to the cast pin 18 from FIG. 3.
Im Vorangegangenen Beispiel sind die ineinander gesteckten Körper mit runden Querschnitten dargestellt. Neben dem runden Querschnitt sind grundsätzliche alle weiteren Querschnitte denkbar, die Querschnitte der Körper sollten jedoch konzentrisch sein und sich entlang einer Bewegungsachse nicht verändern. Weiterhin kann eine Schienenverbindung, z. B. in Form einer Schwalbenschwanzverbindung zweckmäßig sein.In the previous example, the nested bodies are shown with round cross sections. In addition to the round cross section, all other cross sections are basically conceivable, but the cross sections of the bodies should be concentric and not change along an axis of movement. Furthermore, a rail connection, e.g. B. in the form of a dovetail connection.
Der Begriff Bremsscheibentopf wird generell für ein Halteteil verwendet, das zur Anbindung der Bremsscheibe an ein Fahrzeug dient .The term brake disc pot is generally used for a holding part that is used to connect the brake disc to a vehicle.
Die Bremsscheibe wird bevorzugt aus einem Material auf Eisenbasis gegossen, entsprechend bestehen die Verbindungskδrper ebenfalls bevorzugt aus einem Eisenwerkstoff. Grundsätzlich ist die Erfindung auch auf Leichtmetallguss anwendbar. Die einzelnen Komponenten der Bremsscheibe können aus unterschiedlichen Materialien bestehen. Die in Fig. 2 dargestellten Brücken verlaufen exemplarisch an einer oberen und unteren Reibringseite. Sie können umlaufend oder unterbrochen ausgestaltet sein und grundsätzlich an allen Berührungspunkten von Topf 4 und Reibring 6 angeordnet sein.The brake disc is preferably cast from an iron-based material, and accordingly the connecting bodies are also preferably made from an iron material. In principle, the invention is also applicable to light metal casting. The individual components of the brake disc can consist of different materials. The bridges shown in FIG. 2 run exemplarily on an upper and lower friction ring side. They can be circumferential or interrupted and in principle be arranged at all points of contact between pot 4 and friction ring 6.
In den Figuren 1 bis 4 ist die Anordnung der ineinander gesteckten Körper (8, 10, 26) in der Art ausgestaltet, dass diese im Wesentlichen im Bereich des Reibringes angeordnet sind. In einer nicht dargestellten Ausführungsform ist ein äußerer der ineinander gesteckten Körper von einem Topf umgössen und eine Verbindung analog dem gegossenen Zapfen 18 in Fig. 3reicht von einem Reibring zum Topf und steht dort in Verbindung mit einem inneren der ineinander gesteckten Körper. Ebenso ist eine Verbindung analog dem Bolzen 26 in Fig. 4 vom Reibring zum Topf zweckmäßig, wobei der Bolzen im Reibring umgössen ist und in einer im Topf eingegossenen Hülse beweglich gelagert ist. In FIGS. 1 to 4, the arrangement of the bodies (8, 10, 26) inserted into one another is designed in such a way that they are arranged essentially in the area of the friction ring. In an embodiment not shown, an outer one of the nested bodies is encased in a pot and a connection analogous to the cast pin 18 in FIG. 3 extends from a friction ring to the pot and is there connected to an inner one of the nested bodies. Likewise, a connection analogous to the pin 26 in FIG. 4 from the friction ring to the pot is expedient, the pin being cast around in the friction ring and being movably mounted in a sleeve cast into the pot.

Claims

Patentansprücheclaims
Verfahren zur Herstellung einer GussbremsScheibe (2) umfassend folgende Schritte:Method for producing a cast brake disc (2) comprising the following steps:
• mindestens zwei Paare von jeweils zwei ineinander gesteckten, bezüglich einer Achse zueinander beweglichen Körpern (8, 10, 26) werden in einen Gießkern eingebracht,At least two pairs of two bodies (8, 10, 26) which are plugged into one another and are movable relative to one another are introduced into a casting core,
• die ineinander gesteckten Körper werden so eingebracht, dass die Achse bezüglich des Gießkerns annähernd radial verläuft,The bodies inserted into one another are introduced in such a way that the axis runs approximately radially with respect to the casting core,
• der Gießkern wird in eine Gießform eingebracht,The casting core is placed in a casting mold,
• die Gießform wird mit einem flüssige Metall befüllt,The casting mold is filled with a liquid metal,
• von der erstarrten Gussbremsscheibe (2) wird der Kern entfernt,• the core is removed from the solidified cast brake disc (2),
• wobei die ineinander gesteckten Körper (8, 10, 26) als Verbindungsglieder zwischen einem Bremsscheibentopf• wherein the nested bodies (8, 10, 26) as connecting links between a brake disc chamber
(4) und einem Reibring (6) verbleiben.(4) and a friction ring (6) remain.
Verfahren nach Anspruch 1, d a d u r c h g e k e n n z e i c hn e t , dass der Bremsscheibentopf (4) und der Reibring (6) imMethod according to Claim 1, that the brake disc chamber (4) and the friction ring (6) in the
Verbundguss in einem Gießvorgang abgegossen werden.Compound casting can be poured in one casting process.
Verfahren nach Anspruch 1 oder 2 , d a d u r c h g e k e n n z e i c h n e t ,Method according to claim 1 or 2, d a d u r c h g e k e n n z e i c h n e t,
• dass der Bremsscheibentopf (4) und der Reibring (6) beim Gießen über eine Brücke (12) verbunden werden und• that the brake disc chamber (4) and the friction ring (6) are connected via a bridge (12) during casting and
• dass die Brücke (12) an der erstarrten Bremsscheibe• that the bridge (12) on the solidified brake disc
(2) entfernt wird. (2) is removed.
4. Verfahren nach Anspruch 1 oder 2 , d a d u r c h g e k e n n z e i c h n e t ,4. The method according to claim 1 or 2, d a d u r c h g e k e n n z e i c h n e t,
• dass der Bremsscheibentopf und der Reibring jeweils ü- ber mindestens einen Anschnitt separat befüllt werden und• that the brake disc chamber and the friction ring are each filled separately using at least one gate and
• durch den Kern und die ineinander gesteckten Körper- voneinander getrennt werden.• be separated from each other by the core and the nested bodies.
5. Verfahren nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , dass die ineinander gesteckten Körper (8, 10, 26) in eine Kernform eingelegt werden und anschließend ein Kernsand eingeschossen wird, wobei die ineinander gesteckten Körper (8, 10, 26) von einem Kern (14) mindestens teilweise umgeben werden.5. The method according to any one of claims 1 to 4, characterized in that the nested bodies (8, 10, 26) are inserted into a core shape and then a core sand is shot in, the nested bodies (8, 10, 26) of a core (14) are at least partially surrounded.
6. Bremsscheibe aus einem Gussmaterial mit einem Bremsscheibentopf (4) und einem Reibring (6) , d a d u r c h g e k e n n z e i c h n e t ,6. Brake disc made of a cast material with a brake disc chamber (4) and a friction ring (6), which also means that
• dass der Bremsscheibentopf (4) und der Reibring (6) ü- ber ineinander gesteckte Körper (8, 10, 26) verbunden sind,• that the brake disc chamber (4) and the friction ring (6) are connected by means of bodies (8, 10, 26) inserted into one another,
• und die ineinander gesteckten Körper (8, 10, 26) zueinander axial bewegbar sind,And the nested bodies (8, 10, 26) can be moved axially relative to one another,
• die ineinander gesteckten Körper (8, 10, 26) mit einer Längsachse weitgehend radial bezüglich Bremsscheibentopf (4) und Reibring (6) angeordnet sind,The bodies (8, 10, 26) which are plugged into one another are arranged with a longitudinal axis largely radially with respect to the brake disc chamber (4) and friction ring (6),
• wobei der Bremsscheibentopf (4) mit einem der ineinander gesteckten Körper (8, 10, 26) in Verbindung steht und der Reibring mit jeweils einem anderen der ineinander gesteckten Körper (8, 10, 26) verbunden ist.• wherein the brake disc cup (4) is connected to one of the nested bodies (8, 10, 26) and the friction ring is connected to a different one of the nested bodies (8, 10, 26).
7. Bremsscheibe nach Anspruch 6, d a d u r c h g e k e n n z e i c h n e t , dass die ineinander gesteckten Körper (8, 10, 26) in die Bremsscheibe eingegossen sind. Bremsscheibe nach Anspruch 6 oder 7, d a d u r c h g e k e n n z e i c h n e t , dass die ineinander gesteckten Körper (8, 10, 26) durch zwei Hülsen (8, 10) oder eine Hülse (8) und einen Bolzen7. Brake disc according to claim 6, characterized in that the nested bodies (8, 10, 26) are cast into the brake disc. Brake disc according to claim 6 or 7, characterized in that the nested bodies (8, 10, 26) by two sleeves (8, 10) or a sleeve (8) and a bolt
(26) gebildet werden. (26) can be formed.
EP03725113A 2002-06-20 2003-04-29 Method for the production of a brake disk and brake disk Withdrawn EP1513636A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10227529A DE10227529B4 (en) 2002-06-20 2002-06-20 Method for producing a brake disk and brake disk
DE10227529 2002-06-20
PCT/EP2003/004439 WO2004000490A1 (en) 2002-06-20 2003-04-29 Method for the production of a brake disk and brake disk

Publications (1)

Publication Number Publication Date
EP1513636A1 true EP1513636A1 (en) 2005-03-16

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US (1) US7467694B2 (en)
EP (1) EP1513636A1 (en)
DE (1) DE10227529B4 (en)
WO (1) WO2004000490A1 (en)

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DE10227529A1 (en) 2004-01-15
DE10227529B4 (en) 2010-04-01
US7467694B2 (en) 2008-12-23
US20060175159A1 (en) 2006-08-10

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