WO2013152879A1 - Inner ring for a deep groove ball bearing, deep groove ball bearing having said inner ring, and method for producing such an inner ring - Google Patents

Inner ring for a deep groove ball bearing, deep groove ball bearing having said inner ring, and method for producing such an inner ring Download PDF

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Publication number
WO2013152879A1
WO2013152879A1 PCT/EP2013/052725 EP2013052725W WO2013152879A1 WO 2013152879 A1 WO2013152879 A1 WO 2013152879A1 EP 2013052725 W EP2013052725 W EP 2013052725W WO 2013152879 A1 WO2013152879 A1 WO 2013152879A1
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WO
WIPO (PCT)
Prior art keywords
inner ring
sleeve
ball bearing
groove ball
deep groove
Prior art date
Application number
PCT/EP2013/052725
Other languages
German (de)
French (fr)
Inventor
Anderson ALBANEZE
Leonardo Silva Almeida DE SOUZA
Sergio Custodio SANTOS
Fabiano Miguel SOARES
Alessandro BARBOSA
Marcelo Pereira DUARTE
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2013152879A1 publication Critical patent/WO2013152879A1/en

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Classifications

    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • F16C35/0635—Fixing them on the shaft the bore of the inner ring being of special non-cylindrical shape which co-operates with a complementary shape on the shaft, e.g. teeth, polygonal sections
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F16C2220/04—Shaping by casting by injection-moulding
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/42—Shaping by deformation without removing material by working of thin walled material such as sheet or tube
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

Definitions

  • the invention relates to an annular ring for a deep groove ball bearing, with a hole having a certain cross section and a roller rolling surface on the outside. Furthermore, the invention relates to a deep groove ball bearing with this inner ring and a method for producing such an inner ring.
  • Deep groove ball bearings are mainly used for applications where radial forces have to be transmitted.
  • a deep groove ball bearing essentially comprises an outer ring, an inner ring with a bore and rolling bodies arranged therebetween and possibly a cage for the rolling bodies.
  • the bore of the inner ring is in the simplest case circular, but it is also common inner rings with a more complex shape of the bore, for example, the bore can be square, hexagonal or polygonal. Since the tread of the inner ring must have a certain hardness, inner rings are made in most cases of special materials, such as chromium steel or high alloyed, largely stainless steels. Inner rings with a complex shaped bore are solid and have the disadvantage of a high mass. In addition, the production of the complex bore is complicated and thus expensive, since usually cutting processes are used. Object of the invention
  • the invention is therefore based on the object to provide an inner ring for a deep groove ball bearing, which has a lower mass with unchanged carrying capacity and is easy to produce.
  • an inner ring of the type mentioned in the introduction that it consists of a metal sleeve which has a running surface and converts a plastic insert having the bore.
  • the invention is based on the finding that a considerable mass saving can be achieved by using a two-component composite, one-piece inner ring consisting of a metallic sleeve having a rolling element rolling surface, the sleeve having an insert with a bore made of a plastic material.
  • the sleeve and the insert form an integral, one-piece component.
  • the inner ring according to the invention is designed as an integral injection-molded part with sleeve coated on the inside.
  • the sleeve is produced, on the inside of which the plastic material is then applied by injection molding.
  • the inner ring according to the invention is characterized by a significantly lower mass compared to a solid conventional inner ring, this results in further advantages, such as a lower moment of inertia and lower energy consumption.
  • the sleeve is made by deep drawing or a stamping process. By both methods is a rational mass production with less effort compared to a Her! possible by machining.
  • the insert has a round, square or hexagonal bore.
  • these forms or cross sections are only to be understood as examples, moreover, further embodiments are conceivable, for.
  • a deep groove ball bearing having an inventive inner ring of the type described, an outer ring and arranged therebetween rolling elements.
  • the object of the invention is also achieved by a method for producing an inner ring for a deep groove ball bearing having a certain cross-section bore and a tread for rolling elements on the outside, which is characterized in that a metal sleeve by injection molding is provided with a bore having insert made of plastic.
  • the sleeve is produced by deep drawing and / or a punching process and injection-molded on its inside during injection molding.
  • Injection molding produces an insert having a bore with a round, quadrangular or hexagonal cross-section, wherein polyamide, in particular polyamide PA 66, is preferably used as plastic during injection molding.
  • Figure 1 shows a first embodiment of an inventively designed inner ring in a perspective view
  • Figure 2 is a section through the inner ring of Figure 1;
  • FIG. 3 shows a second embodiment of an inventively designed inner ring in a perspective view
  • the inner ring 1 shown in Figure 1 in a perspective view is provided for a deep groove ball bearing.
  • the deep groove ball bearing comprises the inner ring 1, an outer ring, not shown, and arranged therebetween rolling elements.
  • the inner ring 1 shown in Figure 1 consists of a sleeve 2, which is made of metal, in this case made of a steel alloy.
  • the sleeve 2 has on its outer side a circumferential tread 3 for rolling elements. In the area of the running surface 3, the sleeve 2 has a tapered contour.
  • the sleeve 2 used in the illustrated embodiment is made by deep drawing
  • the sleeve 2 is provided in the region of its bore with an insert 4, which consists of plastic.
  • the insert 4 is integrally formed on the sleeve 2 by an injection molding process.
  • the sleeve 2 is first produced as a steel part, in a further manufacturing step, the sleeve 2 is coated on the inside with the plastic material.
  • the plastic is polyamide PA66, but this material is to be understood merely as an example, in other embodiments, depending on the intended use purpose different plastic materials can be used, which can be processed by injection molding.
  • the insert 4 is produced, the bore has a certain cross section or a certain shape. In the illustrated embodiment, the insert 4 has a circular cross-section.
  • the inner ring 1 Since the inner ring 1 consists of a metallic sleeve with a molded insert made of artificial material, it has a lower mass in comparison with a conventional, solid inner ring. The inner ring 1 thus causes a saving of material and leads to lower moving masses.
  • Figure 2 shows the inner ring 1 in a sectional view. It can be seen that the sleeve 2 and the insert 4 are positively connected with each other. Since the prefabricated sleeve is provided with the insert 4, it is possible to produce different inserts or holes with different cross sections, without changes in the sleeve 2 are required. Accordingly, a single sleeve 2 can be used for a large number of variants.
  • FIG. 3 shows a further exemplary embodiment of an inner ring in a perspective view.
  • the inner ring 5 comprises the sleeve 2, which coincides with that of the first embodiment. Inside the inner ring 5, however, another insert 6 is provided which has a hexagonal cross-section.
  • the sleeve 2 can be used unchanged for different inner rings. Different variants of inner rings can thus be easily manufactured by using a different injection molding tool, without another sleeve 2 is required.
  • the inner rings 1, 5 have the same carrying capacity as a conventional inner ring made of steel, but they are lighter and can be cheaply manufactured.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to an inner ring (1) for a deep groove ball bearing, comprising a bore having a specific cross-section, and a running surface (3) for rolling elements on the outside. According to the invention, the inner ring (1) consists of a sleeve (2) having the running surface, said sleeve being made of metal and encasing an insert (4) having the bore and made of plastic.

Description

Bezeichnung der Erfindung  Name of the invention
Innenring für ein Rillenkugellager, Rillenkugellager mit diesem Innenring sowie Inner ring for a deep groove ball bearing, deep groove ball bearing with this inner ring as well
Verfahren zur Herstellung eines solchen Innenrings  Method for producing such an inner ring
Beschreibung description
Gebiet der Erfindung Die Erfindung betrifft einen Ennenring für ein Rillenkugellager, mit einer einen bestimmten Querschnitt aufweisenden Bohrung und einer Lauffläche für Wälzkörper an der Außenseite. Desweiteren betrifft die Erfindung ein Rillenkugellager mit diesem Innenring sowie ein Verfahren zur Herstellung eines solchen Innenrings. FIELD OF THE INVENTION The invention relates to an annular ring for a deep groove ball bearing, with a hole having a certain cross section and a roller rolling surface on the outside. Furthermore, the invention relates to a deep groove ball bearing with this inner ring and a method for producing such an inner ring.
Hintergrund der Erfindung Background of the invention
Rillenkugellager werden überwiegend für Anwendungen eingesetzt, bei denen radiale Kräfte zu übertragen sind. Ein Rillenkugellager umfasst im Wesentli- chen einen Außenring, einen innenring mit einer Bohrung sowie dazwischen angeordnete Wälzkörper und gegebenenfalls einen Käfig für die Wälzkörper. Deep groove ball bearings are mainly used for applications where radial forces have to be transmitted. A deep groove ball bearing essentially comprises an outer ring, an inner ring with a bore and rolling bodies arranged therebetween and possibly a cage for the rolling bodies.
Die Bohrung des Innenrings ist im einfachsten Fall kreisförmig, es sind jedoch auch Innenringe mit einer komplexeren Form der Bohrung üblich, beispielswei- se kann die Bohrung viereckig, sechseckig oder polygonal ausgebildet sein. Da die Lauffläche des Innenrings eine bestimmte Härte aufweisen muss, werden Innenringe in den meisten Fällen aus speziellen Werkstoffen hergestellt, beispielsweise aus Chromstahl oder hoch legierten, weitgehend rostfreien Stählen. Innenringe mit einer komplex geformten Bohrung sind massiv ausgebildet und weisen den Nachteil einer hohen Masse auf. Zudem ist die Herstellung der komplexen Bohrung aufwendig und somit teuer, da üblicherweise spanende Verfahren zum Einsatz kommen. Aufgabe der Erfindung The bore of the inner ring is in the simplest case circular, but it is also common inner rings with a more complex shape of the bore, for example, the bore can be square, hexagonal or polygonal. Since the tread of the inner ring must have a certain hardness, inner rings are made in most cases of special materials, such as chromium steel or high alloyed, largely stainless steels. Inner rings with a complex shaped bore are solid and have the disadvantage of a high mass. In addition, the production of the complex bore is complicated and thus expensive, since usually cutting processes are used. Object of the invention
Ausgehend von den dargelegten Nachteilen des bekannten Standes der Technik liegt der Erfindung deshalb die Aufgabe zu Grunde, einen Innenring für ein Rillenkugellager anzugeben, der bei unveränderter Tragfähigkeit eine geringere Masse aufweist und einfach herstellbar ist. Based on the stated disadvantages of the known prior art, the invention is therefore based on the object to provide an inner ring for a deep groove ball bearing, which has a lower mass with unchanged carrying capacity and is easy to produce.
Beschreibung der Erfindung Zur Lösung dieser Aufgabe ist bei einem Innenring der eingangs genannten Art erfindungsgemäß vorgesehen, dass er aus einer die Lauffläche aufweisenden Hülse aus Metall besteht, die einen die Bohrung aufweisenden Einsatz aus Kunststoff umwandelt. Der Erfindung liegt die Erkenntnis zugrunde, dass eine beträchtliche Masseeinsparung erzielt werden kann, indem ein aus zwei Komponenten zusammengesetzter, einstückiger Innenring verwendet wird, der aus einer metallischen Hülse besteht, die eine Lauffläche für Wälzkörper aufweist, wobei die Hülse einen Einsatz mit einer Bohrung aufweist, der aus einem Kunststoffmaterial herge- stellt ist Die Hülse und der Einsatz bilden ein integrales, einstückiges Bauteil. DESCRIPTION OF THE INVENTION In order to achieve this object, it is provided according to the invention in an inner ring of the type mentioned in the introduction that it consists of a metal sleeve which has a running surface and converts a plastic insert having the bore. The invention is based on the finding that a considerable mass saving can be achieved by using a two-component composite, one-piece inner ring consisting of a metallic sleeve having a rolling element rolling surface, the sleeve having an insert with a bore made of a plastic material. The sleeve and the insert form an integral, one-piece component.
Die Fertigung des erfindungsgemäßen Innenrings zu vereinfachen, wird es bevorzugt, dass er als integrales Spritzgussteil mit innenseitig umspritzter Hülse ausgebildet ist. Dazu wird zunächst die Hülse hergestellt, auf deren Innenseite anschließend durch Spritzgießen das Kunststoffmaterial aufgebracht wird. Der erfindungsgemäße Innenring zeichnet sich durch eine wesentlich geringere Masse im Vergleich zu einem massiven herkömmlichen Innenring aus, dadurch ergeben sich weitere Vorteile, beispielsweise ein geringeres Trägheitsmoment und ein geringerer Energieverbrauch. To simplify the production of the inner ring according to the invention, it is preferred that it is designed as an integral injection-molded part with sleeve coated on the inside. For this purpose, first the sleeve is produced, on the inside of which the plastic material is then applied by injection molding. The inner ring according to the invention is characterized by a significantly lower mass compared to a solid conventional inner ring, this results in further advantages, such as a lower moment of inertia and lower energy consumption.
Es liegt auch im Rahmen der Erfindung, dass die Hülse durch Tiefziehen oder ein Stanzverfahren hergestellt ist. Durch beide Verfahren ist eine rationelle Massenfertigung mit einem geringeren Aufwand im Vergleich zu einer Herste!- lung durch spanende Verfahren möglich. It is also within the scope of the invention that the sleeve is made by deep drawing or a stamping process. By both methods is a rational mass production with less effort compared to a Her! possible by machining.
Bei dem erfindungsgemäßen Innenring wird es bevorzugt, dass der Einsatz eine runde, viereckige oder sechseckige Bohrung aufweist. Diese Formen be- ziehungsweise Querschnitte sind jedoch lediglich beispielhaft zu verstehen, darüber hinaus sind weitere Ausgestaltungen denkbar, z. B. eine polygonale Form oder eine Form mit einem Wellenprofil. In the inner ring according to the invention it is preferred that the insert has a round, square or hexagonal bore. However, these forms or cross sections are only to be understood as examples, moreover, further embodiments are conceivable, for. As a polygonal shape or a shape with a wave profile.
Daneben wird die Aufgabe der Erfindung durch ein Rillenkugellager gelöst, das in erfindungsgemäßer Weise einen Innenring der beschriebenen Art, einen Außenring und dazwischen angeordnete Wälzkörper aufweist. In addition, the object of the invention is achieved by a deep groove ball bearing having an inventive inner ring of the type described, an outer ring and arranged therebetween rolling elements.
Darüber hinaus wird die Aufgabe der Erfindung auch durch ein Verfahren zur Herstellung eines Innenrings für ein Rillenkugellager mit einer einen bestimm- ten Querschnitt aufweisenden Bohrung und einer Lauffläche für Wälzkörper an der Außenseite gelöst, welches dadurch gekennzeichnet ist, dass eine aus Metall bestehende Hülse durch Spritzgießen mit einem die Bohrung aufweisenden Einsatz aus Kunststoff versehen wird. Die Hülse wird dabei durch Tiefziehen und/oder ein Stanzverfahren hergestellt und beim Spritzgießen an ihrer Innenseite umspritzt wird. Durch das Spritzgießen wird dabei ein Einsatz mit einer Bohrung mit rundem, viereckigem oder sechseckigem Querschnitt erzeugt, wobei beim Spritzgießen als Kunststoff vorzugsweise Polyamid, insbesondere Polyamid PA 66, verwendet wird. Kürze Beschreibung der Zeichnungen In addition, the object of the invention is also achieved by a method for producing an inner ring for a deep groove ball bearing having a certain cross-section bore and a tread for rolling elements on the outside, which is characterized in that a metal sleeve by injection molding is provided with a bore having insert made of plastic. The sleeve is produced by deep drawing and / or a punching process and injection-molded on its inside during injection molding. Injection molding produces an insert having a bore with a round, quadrangular or hexagonal cross-section, wherein polyamide, in particular polyamide PA 66, is preferably used as plastic during injection molding. Brief description of the drawings
Der erfindungsgemäß ausgebildete Innenring wird nachfolgend in zwei bevorzugten Ausführungsformen unter Bezugnahme auf die beigefügten Zeichnungen näher erläutert. Dabei zeigen: The inventively embodied inner ring is explained below in two preferred embodiments with reference to the accompanying drawings. Showing:
Figur 1 eine erste Ausführungsform eines erfindungsgemäß ausgebildeten Innenrings in einer perspektivischen Ansicht; Figur 2 einen Schnitt durch den Innenring von Figur 1 ; Figure 1 shows a first embodiment of an inventively designed inner ring in a perspective view; Figure 2 is a section through the inner ring of Figure 1;
Figur 3 eine zweite Ausführungsform eines erfindungsgemäß ausgebildeten Innenrings in einer perspektivischen Ansicht 3 shows a second embodiment of an inventively designed inner ring in a perspective view
Ausführliche Beschreibung der Zeichnungen Detailed description of the drawings
Der in Figur 1 in einer perspektivischen Ansicht gezeigte Innenring 1 ist für ein Rillenkugellager vorgesehen. Das Rillenkugellager umfasst den Innenring 1, einen nicht dargestellten Außenring und dazwischen angeordnete Wälzkörper. The inner ring 1 shown in Figure 1 in a perspective view is provided for a deep groove ball bearing. The deep groove ball bearing comprises the inner ring 1, an outer ring, not shown, and arranged therebetween rolling elements.
Der in Figur 1 gezeigte Innenring 1 besteht aus einer Hülse 2, die aus Metali, in diesem Fall aus einer Stahllegierung, hergestellt ist. Die Hülse 2 weist an ihrer Außenseite eine umlaufende Lauffläche 3 für Wälzkörper auf. Im Bereich der Lauffläche 3 weist die Hülse 2 eine verjüngte Kontur auf. Die in dem dargestellten Ausführungsbeispiel verwendete Hülse 2 ist durch Tiefziehen hergestellt The inner ring 1 shown in Figure 1 consists of a sleeve 2, which is made of metal, in this case made of a steel alloy. The sleeve 2 has on its outer side a circumferential tread 3 for rolling elements. In the area of the running surface 3, the sleeve 2 has a tapered contour. The sleeve 2 used in the illustrated embodiment is made by deep drawing
Die Hülse 2 ist im Bereich ihrer Bohrung mit einem Einsatz 4 versehen, der aus Kunststoff besteht. Der Einsatz 4 wird durch ein Spritzgussverfahren innenseitig an der Hülse 2 angeformt. Dazu wird zunächst die Hülse 2 als Stahlteil hergestellt, in einem weiteren Herstellungsschritt wird die Hülse 2 innenseitig mit dem Kunststoffmaterial ummantelt. Im dargestellten Ausführungsbeispiel handelt es sich bei dem Kunststoff um Polyamid PA66, dieser Werkstoff ist jedoch lediglich als Beispiel zu verstehen, bei anderen Ausführungen können in Abhängig- keit des beabsichtigten Einsatzzwecks unterschiedliche Kunststoffmaterialien eingesetzt werden, die durch Spritzgießen verarbeitet werden können. Durch den Spritzgussprozess wird der Einsatz 4 hergestellt, dessen Bohrung einen bestimmten Querschnitt beziehungsweise eine bestimmte Form aufweist. In dem dargestellten Ausführungsbeispiel weist der Einsatz 4 einen kreisförmigen Querschnitt auf. Da der Innenring 1 aus einer metallischen Hülse mit einem angespritzten Einsatz aus Künststoff besteht, weist er eine geringere Masse im Vergleich mit einem herkömmlichen, massiven Innenring auf. Der Innenring 1 bewirkt somit eine Materialersparnis und führt zu geringeren bewegten Massen. The sleeve 2 is provided in the region of its bore with an insert 4, which consists of plastic. The insert 4 is integrally formed on the sleeve 2 by an injection molding process. For this purpose, the sleeve 2 is first produced as a steel part, in a further manufacturing step, the sleeve 2 is coated on the inside with the plastic material. In the illustrated embodiment, the plastic is polyamide PA66, but this material is to be understood merely as an example, in other embodiments, depending on the intended use purpose different plastic materials can be used, which can be processed by injection molding. By the injection molding process, the insert 4 is produced, the bore has a certain cross section or a certain shape. In the illustrated embodiment, the insert 4 has a circular cross-section. Since the inner ring 1 consists of a metallic sleeve with a molded insert made of artificial material, it has a lower mass in comparison with a conventional, solid inner ring. The inner ring 1 thus causes a saving of material and leads to lower moving masses.
Figur 2 zeigt den Innenring 1 in einer geschnittenen Ansicht. Man erkennt, dass die Hülse 2 und der Einsatz 4 formschlüssig miteinander verbunden sind. Da die vorgefertigte Hülse mit dem Einsatz 4 versehen wird, ist es möglich, unterschiedliche Einsätze beziehungsweise Bohrungen mit unterschiedlichen Quer- schnitten zu erzeugen, ohne dass Änderungen der Hülse 2 erforderlich sind. Dementsprechend kann eine einzige Hülse 2 für eine große Zahl an Varianten verwendet werden. Figure 2 shows the inner ring 1 in a sectional view. It can be seen that the sleeve 2 and the insert 4 are positively connected with each other. Since the prefabricated sleeve is provided with the insert 4, it is possible to produce different inserts or holes with different cross sections, without changes in the sleeve 2 are required. Accordingly, a single sleeve 2 can be used for a large number of variants.
Figur 3 zeigt ein weiteres Ausführungsbeispiel eines Innenrings in einer per- spektivischen Ansicht. FIG. 3 shows a further exemplary embodiment of an inner ring in a perspective view.
Der Innenring 5 umfasst die Hülse 2, die mit derjenigen des ersten Ausführungsbeispiels übereinstimmt. Im Inneren des Innenrings 5 ist jedoch ein anderer Einsatz 6 vorgesehen, der einen sechseckigen Querschnitt aufweist. Die Hülse 2 kann unverändert für unterschiedliche Innenringe verwendet werden. Verschiedene Varianten von Innenringen können somit einfach durch Verwendung eines anderen Spritzgusswerkzeugs hergestellt werden, ohne dass eine andere Hülse 2 erforderlich ist. Die Innenringe 1 , 5 besitzen die gleiche Tragfähigkeit wie ein herkömmlicher innenring aus Stahl, sie sind jedoch leichter und können kostengünstig hergesteilt werden. Bezugszahlenliste 1 Innenring The inner ring 5 comprises the sleeve 2, which coincides with that of the first embodiment. Inside the inner ring 5, however, another insert 6 is provided which has a hexagonal cross-section. The sleeve 2 can be used unchanged for different inner rings. Different variants of inner rings can thus be easily manufactured by using a different injection molding tool, without another sleeve 2 is required. The inner rings 1, 5 have the same carrying capacity as a conventional inner ring made of steel, but they are lighter and can be cheaply manufactured. Reference number list 1 inner ring
2 Hülse 2 sleeve
3 Lauffläche 3 tread
4 Einsatz 4 use
5 Innenring 5 inner ring
6 Einsatz 6 use

Claims

Patentansprüche 1 . Innenring {1, 5) für ein Rillenkugellager, mit einer einen bestimmten Querschnitt aufweisenden Bohrung und einer Lauffläche (3) für Wälzkörper an der Außenseite, dadurch gekennzeichnet, dass der Innenring (1, 5) aus einer die Lauffläche aufweisenden Hülse (2) aus Metall besteht, die einen die Bohrung aufweisenden Einsatz (4, 6) aus Kunststoff ummantelt. Claims 1. Inner ring {1, 5) for a deep groove ball bearing, with a certain cross-section bore and a running surface (3) for rolling elements on the outside, characterized in that the inner ring (1, 5) of a running surface having sleeve (2) Metal consists, which surrounds a bore having insert (4, 6) made of plastic.
2. Innenring nach Anspruch 1, dadurch gekennzeichnet, dass er als Integra- les Spritzgussteil mit innenseitig umspritzter Hülse (2) hergestellt ist2. Inner ring according to claim 1, characterized in that it is made as Integra- les injection molded part with inside overmolded sleeve (2)
3. Innenring nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Hülse (2) durch Tiefziehen oder ein Stanzverfahren hergestellt ist. 3. Inner ring according to claim 1 or 2, characterized in that the sleeve (2) is made by deep drawing or a stamping process.
4. Innenring nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Hülse (2) und der Einsatz (4, 6) formschlüssig und/oder kraftschlüssig miteinander verbunden sind. 4. Inner ring according to one of the preceding claims, characterized in that the sleeve (2) and the insert (4, 6) are positively and / or non-positively connected to each other.
5. Innenring nach einem der vorangehenden Ansprüche, dadurch gekenn- zeichnet, dass der Einsatz (4, 6) eine runde, viereckige oder sechseckige5. Inner ring according to one of the preceding claims, characterized in that the insert (4, 6) is a round, square or hexagonal
Bohrung aufweist. Bore has.
6. Rillenkugellager, dadurch gekennzeichnet, dass er einen Innenring (1, 5) nach einem der Patentansprüche 1 bis 5, einen Außenring und dazwischen angeordnete Wälzkörper aufweist. 6. deep groove ball bearing, characterized in that it comprises an inner ring (1, 5) according to one of the claims 1 to 5, an outer ring and arranged therebetween rolling elements.
7. Verfahren zur Herstellung eines Innenrings (1, 5) für ein Rillenkugellager mit einer einen bestimmten Querschnitt aufweisenden Bohrung und einer Lauffläche (3) für Wälzkörper an der Außenseite, dadurch gekennzeich- net, dass eine aus Metall bestehende Hülse (2) durch Spritzgießen mit einem die Bohrung aufweisenden Einsatz (4, 6) aus Kunststoff versehen wird. 7. A method for producing an inner ring (1, 5) for a deep groove ball bearing with a certain cross-section bore and a running surface (3) for rolling elements on the outside, thereby marked, that a metal sleeve (2) by injection molding with a bore having insert (4, 6) made of plastic.
8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass die Hülse (2) durch Tiefziehen und/oder ein Stanzverfahren hergestellt wird. 8. The method according to claim 7, characterized in that the sleeve (2) is produced by deep drawing and / or a punching process.
9. Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Hülse (2) beim Spritzgießen an ihrer Innenseite umspritzt wird, wobei als Kunststoff vorzugsweise Polyamid, insbesondere Polyamid PA 66, verwendet wird. 9. The method according to claim 7 or 8, characterized in that the sleeve (2) is injection-molded on its inside during injection molding, being preferably used as plastic polyamide, in particular polyamide PA 66.
10. Verfahren nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass durch Spritzgießen ein Einsatz (4, 6) mit einer Bohrung mit rundem, viereckigem oder sechseckigem Querschnitt erzeugt wird. 10. The method according to any one of claims 7 to 9, characterized in that by injection molding an insert (4, 6) is produced with a hole with a round, square or hexagonal cross-section.
PCT/EP2013/052725 2012-04-12 2013-02-12 Inner ring for a deep groove ball bearing, deep groove ball bearing having said inner ring, and method for producing such an inner ring WO2013152879A1 (en)

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DE201210205922 DE102012205922A1 (en) 2012-04-12 2012-04-12 Inner race for a deep groove ball bearing, deep groove ball bearing with this inner race and method of making such inner race
DE102012205922.9 2012-04-12

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