EP1261812A1 - Moulded part formed from a tape - Google Patents

Moulded part formed from a tape

Info

Publication number
EP1261812A1
EP1261812A1 EP01903682A EP01903682A EP1261812A1 EP 1261812 A1 EP1261812 A1 EP 1261812A1 EP 01903682 A EP01903682 A EP 01903682A EP 01903682 A EP01903682 A EP 01903682A EP 1261812 A1 EP1261812 A1 EP 1261812A1
Authority
EP
European Patent Office
Prior art keywords
recess
projection
strip
cage
band
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Withdrawn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
EP01903682A
Other languages
German (de)
French (fr)
Inventor
Wolfgang Fugel
Leo Müntnich
Hartwig Waldert
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.)
IHO Holding GmbH and Co KG
Original Assignee
INA Schaeffler 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 INA Schaeffler KG filed Critical INA Schaeffler KG
Publication of EP1261812A1 publication Critical patent/EP1261812A1/en
Withdrawn legal-status Critical Current

Links

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
    • F16C33/46—Cages for rollers or needles
    • F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
    • F16C33/543—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
    • F16C33/546—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part with a M- or W-shaped cross section
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4694—Single-split roller or needle cages
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
    • F16C33/543—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
    • F16C33/545—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part rolled from a band
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/488—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable reluctance detectors

Definitions

  • the invention relates to a molded part produced from a strip, the ends of which touching in the circumferential direction are permanently connected to one another.
  • the invention also relates to associated processes for the production of molded parts.
  • connection welding creates welding poses which have to be removed again in a subsequent operation, since they can otherwise damage the bearing.
  • imperfections arise during the connection welding. These include internal geometric irregularities that can occur in different levels. The imperfections begin within the roughness and end at a depth at which they have a lasting effect on the function of the component, ie in extreme cases make it unusable. Such imperfections now have a notch effect, ie they cause a disturbance in the uniform flow of force in the component due to the sudden change in the cross section or the surface contour. On These notches develop a stress concentration, with a stress peak forming in the notch base. This notch now has two effects. On the one hand, the load-bearing cross-section is reduced, on the other hand, the stress is concentrated on the notch base. This notch effect within the welded connection between the two joints of the cage has a particularly negative effect on its fatigue strength under high loads.
  • the object of the invention is therefore to develop a novel connection of a molded part made from tape, which ensures reliable fatigue strength even under the highest loads.
  • this object is achieved according to the characterizing part of claim 1 in that at one end of the band a recess and at the other end an excess projection are arranged, which after bending the band are joined by applying a force in the axial or radial direction are, so that an indissoluble press fit is formed by plastic deformation.
  • molded part produced from a strip is to be interpreted broadly in the sense of the invention, ie molded parts are conceivable for the most diverse applications.
  • the molded part is a rotationally symmetrical cage for a rolling bearing consisting of webs and side rings, with at least one side ring attached has a recess at one end and a projection at the other end.
  • the molded part is designed as a pulse wheel for a device for measuring a rotational speed of a rotating component, which has circumferentially evenly spaced counting sections which cooperate with a sensor device, the pulse wheel being connectable to the rotating component is.
  • the recess should be designed as a receiving bore and the projection as a cylinder.
  • the shape of the recess and projection are freely selectable, with particular preference being given to those shapes which can be produced with as little effort as possible and which can be fitted well into one another.
  • the band should be made of an iron material, of copper or a copper alloy, of aluminum or of an aluminum alloy or of a plastic.
  • a method for the production of a molded part in the form of a cage is protected, where appropriate, first an endless starting strip is profiled by a shaping process in accordance with the desired later cross-section, then pockets are punched out for receiving rolling elements, and then, if necessary, the Bags are provided with guide and / or holding surfaces, then a strip is cut to length, which is provided at its opposite end with the recess and with the projection, then the strip is bent into the ring shape, before by axially or radially pressing the projection into one another Recess of the dimensionally stable cage is formed.
  • Figure 1 is a perspective view of a tape section
  • Figures 2 u. 3 shows a section of a roller bearing cage shown in perspective.
  • the strip shown in FIG. 1 and designated 1 has the side parts 2 and 3 which are connected to one another by webs 4 which are evenly spaced from one another, so that pockets 5 are formed.
  • the strip 1 is profiled in such a way that an M-shaped cage is formed after it has been bent round.
  • Each side part 2 and 3 has a recess 6 at one end and a projection 7 at the other end, which are designed as a bore or as a cylinder, the projection 7 being oversized with respect to the recess 6, so that when the material is squeezed Inserting the projection 7 into the recess 6 creates a permanent connection.
  • the projection 7 is pressed into the recess 6 in such a way that the two side parts 1, 2 are placed axially offset next to one another by their width and are then pressed axially into one another by the application of a force.
  • the bearing cage shown partially in FIG. 2 and designated 8 has the side rings 9 and 10, which are connected to one another by webs 11, so that pockets 12 receiving rolling elements are formed.
  • the webs 11 are profiled in such a way that, starting from the two sides 9, 10, they first run parallel to the bearing axis (not shown), then fall obliquely radially inwards and finally unite in a partial region running parallel to the bearing axis.
  • the cage 8 has at its abutting ends on each side ring 9 and 10 the recess 6 and the projection 7, with this embodiment of the cage 8 pressing the projection 7 into the recess after the round bending 6 also takes place in the axial direction.
  • the cage 8 in FIG. 3 is provided with recesses 6 and projections 7 in such a way that they have to be brought into one another by radial displacement after the round bending.
  • the joints are each placed in the area of a pocket 5, 12.
  • their arrangement in the web area is just as possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention relates to a moulded part which is formed from a tape. The ends of said moulded part contact each other in the direction of circumference and are fixedly connected to one another. The inventive moulded part is characterised in that a recess (6) is arranged on one end of the tape (1) and that a projection (7) that is provided with an overdimension is arranged on the remaining end. After the tape (1) has been bent round, said recess and projection are inserted into one another in the axial or radial direction in such a way that an nondetachable press fit is produced by means of plastic deformation.

Description

Aus einem Band hergestelltes Formteil Molded part made from a band
Anwendungsgebiet der ErfindungField of application of the invention
Die Erfindung betrifft ein aus einem Band hergestelltes Formteil, dessen in Umfangsrichtung sich berührende Enden unlösbar miteinander verbunden sind. Außerdem betrifft die Erfindung zugehörige Verfahren zur Herstellung von Formteilen.The invention relates to a molded part produced from a strip, the ends of which touching in the circumferential direction are permanently connected to one another. The invention also relates to associated processes for the production of molded parts.
Hintergrund der ErfindungBackground of the Invention
Es ist schon seit langem bekannt, derartige Formteile als Lagerkäfige für Wälzlager so herzustellen, dass zunächst in einem flachen Metallband durch einen Stanzvorgang Wälzkörper aufnehmende Taschen erzeugt werden. Nach dem Ablängen des Metallbandes entsprechend dem gewünschten Käfigdurchmesser wird dieses in eine zylindrische Form gerollt, so dass die beiden Stoß- stellen aneinanderliegen. Zur Fertigstellung des Käfigs werden dann die an- einanderliegenden Stoßstellen durch einen Schweißvorgang miteinander verbunden (DE 15 52 099).It has been known for a long time to produce such molded parts as bearing cages for rolling bearings in such a way that pockets which hold rolling elements are first produced in a flat metal strip by a stamping process. After the metal strip has been cut to length in accordance with the desired cage diameter, it is rolled into a cylindrical shape so that the two abutting points lie against one another. To complete the cage, the abutting joints are then connected to one another by a welding process (DE 15 52 099).
Nachteilig dabei ist, dass durch das Verbindungsschweißen Schweißaufwürfe entstehen, die in einem nachfolgenden Arbeitsgang wieder abgetragen werden müssen, da sie ansonsten das Lager beschädigen können. Es ist weiter von Nachteil, dass beim Verbindungsschweißen sog. Ungänzen entstehen. Darunter sind nach innengehende geometrische Unregelmäßigkeiten zu verstehen, die in verschiedenen Abstufungen auftreten können. Die Ungänzen beginnen ihr Spektrum innerhalb der Rauheit und enden in einer Tiefe, in der sie die Funktion des Bauteils nachhaltig beeinflussen, d. h. im Extremfall dieses unbrauchbar machen. Derartige Ungänzen weisen nun eine Kerbwirkung auf, d. h. sie bewirken durch die plötzliche Änderung des Querschnittes oder der Oberflächenkontur eine Störung des gleichmäßigen Kraftflusses im Bauteil. An diesen Kerben entsteht eine Spannungskonzentration, wobei sich eine Spannungspitze im Kerbgrund bildet. Diese Kerbung bringt nun zwei Effekte mit sich. Zum einen wird der tragende Querschnitt verringert, zum anderen konzentriert sich die Beanspruchung auf den Kerbgrund. Diese Kerbwirkung innerhalb der Schweißverbindung zwischen den beiden Stoßstellen des Käfigs wirkt sich insbesondere negativ auf dessen Dauerfestigkeit unter hohen Beanspruchungen aus.The disadvantage here is that the connection welding creates welding poses which have to be removed again in a subsequent operation, since they can otherwise damage the bearing. It is also disadvantageous that so-called imperfections arise during the connection welding. These include internal geometric irregularities that can occur in different levels. The imperfections begin within the roughness and end at a depth at which they have a lasting effect on the function of the component, ie in extreme cases make it unusable. Such imperfections now have a notch effect, ie they cause a disturbance in the uniform flow of force in the component due to the sudden change in the cross section or the surface contour. On These notches develop a stress concentration, with a stress peak forming in the notch base. This notch now has two effects. On the one hand, the load-bearing cross-section is reduced, on the other hand, the stress is concentrated on the notch base. This notch effect within the welded connection between the two joints of the cage has a particularly negative effect on its fatigue strength under high loads.
Zusammenfassung der ErfindungSummary of the invention
Aufgabe der Erfindung ist es daher, eine neuartige Verbindung von einem aus Band hergestellten Formteil zu entwickeln, die eine zuverlässige Dauerfestigkeit auch unter höchsten Beanspruchungen gewährleistet.The object of the invention is therefore to develop a novel connection of a molded part made from tape, which ensures reliable fatigue strength even under the highest loads.
Erfindungsgemäß wird diese Aufgabe nach dem kennzeichnenden Teil von Anspruch 1 dadurch gelöst, dass an einem Ende des Bandes eine Ausnehmung und am anderen Ende ein ein Übermaß aufweisender Vorsprung angeordnet sind, die nach dem Rundbiegen des Bandes durch Aufwenden einer Kraft in axialer oder radialer Richtung ineinandergefügt sind, so dass durch plastische Verformung ein unlösbarer Preßverband gebildet ist.According to the invention, this object is achieved according to the characterizing part of claim 1 in that at one end of the band a recess and at the other end an excess projection are arranged, which after bending the band are joined by applying a force in the axial or radial direction are, so that an indissoluble press fit is formed by plastic deformation.
Der Vorteil eines erfindungsgemäßen Formteiles liegt insbesondere darin, dass das Schweißen durch diese neuartige Verbindungstechnik der Bandenden ersetzt ist. Die vorstehend aufgeführten Nachteile, die mit dem Schweißaufwurf in einem unmittelbaren Zusammenhang stehen, entfallen somit. Ein weiterer Vorteil ist darin zu sehen, dass auch Bandmaterialien verwendet werden können, die nicht oder nur sehr schwierig schweißtechnisch miteinander verbunden werden können.The advantage of a molded part according to the invention is, in particular, that welding is replaced by this new type of connection technology for the strip ends. The disadvantages listed above, which are directly related to welding, are thus eliminated. Another advantage can be seen in the fact that strip materials can also be used that cannot be connected to one another, or only with great difficulty, by welding.
Der Begriff "aus einem Band hergestelltes Formteil" ist im Sinne der Erfindung weit auszulegen, d. h. es sind Formteile für die unterschiedensten Anwendungsfälle denkbar. So ist beispielsweise nach Anspruch 2 vorgesehen, dass das Formteil ein aus Stegen und Seitenringen bestehender rotationssymmetrischer Käfig für ein Wälzlager ist, wobei wenigstens ein Seitenring an einem Ende eine Ausnehmung und am anderen Ende einen Vorsprung aufweist.The term “molded part produced from a strip” is to be interpreted broadly in the sense of the invention, ie molded parts are conceivable for the most diverse applications. For example, it is provided according to claim 2 that the molded part is a rotationally symmetrical cage for a rolling bearing consisting of webs and side rings, with at least one side ring attached has a recess at one end and a projection at the other end.
Nach einem weiteren Merkmal der Erfindung gemäß Anspruch 3 ist das Formteil als ein Impulsrad für eine Einrichtung zum Messen einer Drehzahl eines rotierenden Bauteiles ausgebildet, das in Umfangsrichtung gleichmäßig voneinander beabstandete Zählabschnitte aufweist, die mit einer Sensoreinrichtung zusammenwirken, wobei das Impulsrad mit dem rotierenden Bauteil verbindbar ist.According to a further feature of the invention according to claim 3, the molded part is designed as a pulse wheel for a device for measuring a rotational speed of a rotating component, which has circumferentially evenly spaced counting sections which cooperate with a sensor device, the pulse wheel being connectable to the rotating component is.
Nach einem weiteren zusätzlichen Merkmal der Erfindung gemäß Anspruch 4 soll die Ausnehmung als eine Aufnahmebohrung und der Vorsprung als ein Zylinder ausgebildet sein. Die Form von Ausnehmung und Vorsprung sind frei wählbar, wobei man insbesondere solche Formen bevorzugen wird, die sich mit einem möglichst geringen Aufwand herstellen und die sich gut ineinander fügen lassen.According to a further additional feature of the invention according to claim 4, the recess should be designed as a receiving bore and the projection as a cylinder. The shape of the recess and projection are freely selectable, with particular preference being given to those shapes which can be produced with as little effort as possible and which can be fitted well into one another.
Nach einem weiteren Merkmal der Erfindung gemäß Anspruch 5 soll das Band aus einem Eisenwerkstoff, aus Kupfer oder einer Kupferlegierung, aus Alumini- um oder aus einer Aluminiumlegierung oder aus einem Kunststoff gefertigt sein.According to a further feature of the invention according to claim 5, the band should be made of an iron material, of copper or a copper alloy, of aluminum or of an aluminum alloy or of a plastic.
Im Anspruch 6 ist ein Verfahren zur Herstellung eines Formteiles in Form eines Käfigs unter Schutz gestellt, wobei ggf. zunächst ein endloses Ausgangsband entsprechend dem gewünschten späteren Querschnitt durch einen Formgebungsvorgang profiliert wird, danach Taschen für die Aufnahme von Wälzkörpern ausgestanzt werden, anschließend ggf. die Taschen mit Führungsund/oder Halteflächen versehen werden, danach ein Streifen abgelängt wird, der an seinen gegenüberliegenden Ende mit der Ausnehmung und mit dem Vorsprung versehen wird, anschließend das Biegen des Streifens in die Ringform erfolgt, bevor durch axiales oder radiales Ineinanderpressen des Vorsprunges in die Ausnehmung der formstabile Käfig gebildet ist.In claim 6, a method for the production of a molded part in the form of a cage is protected, where appropriate, first an endless starting strip is profiled by a shaping process in accordance with the desired later cross-section, then pockets are punched out for receiving rolling elements, and then, if necessary, the Bags are provided with guide and / or holding surfaces, then a strip is cut to length, which is provided at its opposite end with the recess and with the projection, then the strip is bent into the ring shape, before by axially or radially pressing the projection into one another Recess of the dimensionally stable cage is formed.
Schließlich ist in Anspruch 7 ein ähnliches Herstell verfahren für ein Impulsrad beschrieben, wonach zunächst in einem endlosen Ausgangsband als Zählabschnitte wirkende Taschen ausgestanzt werden, danach ein Streifen abgelängt wird, der anschließend an seinen gegenüberliegenden Enden mit der Ausnehmung und mit dem Vorsprung versehen wird, anschließend das Biegen des Streifens in die Ringform erfolgt, bevor durch axiales oder radiales Ineinander- pressen des Vorsprunges in die Ausnehmung das formstabile Impulsrad gebildet ist.Finally, in claim 7 a similar manufacturing process for a pulse wheel described, according to which pockets acting as counting sections are first punched out in an endless starting band, then a strip is cut to length, which is then provided with the recess and the projection at its opposite ends, and then the strip is bent into the ring shape before being axially or radially pressing the projection into the recess, the dimensionally stable impulse wheel is formed.
Die Erfindung wird an nachstehenden Ausführungsbeispielen näher erläutert.The invention is explained in more detail using the following exemplary embodiments.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Es zeigen:Show it:
Figur 1 eine perspektivische Darstellung eines Bandabschnittes undFigure 1 is a perspective view of a tape section and
Figuren 2 u. 3 einen Ausschnitt von einem perspektivisch dargestellten Wälzlagerkäfig.Figures 2 u. 3 shows a section of a roller bearing cage shown in perspective.
Ausführliche Beschreibung der ZeichnungenDetailed description of the drawings
Der in Figur 1 dargestellte und mit 1 bezeichnete Streifen weist die Seitenteile 2 und 3 auf, die durch gleichmäßig voneinander beabstandete Stege 4 mitein- ander verbunden sind, so dass Taschen 5 gebildet sind. Der Streifen 1 ist so profiliert, dass nach seinem Rundbiegen ein M-förmiger Käfig gebildet ist. Jedes Seitenteil 2 und 3 weist an einem Ende eine Ausnehmung 6 und am anderen Ende einen Vorsprung 7 auf, die als Bohrung bzw. als Zylinder ausgebildet sind, wobei der Vorsprung 7 gegenüber der Ausnehmung 6 ein Übermaß auf- weist, so dass durch Materialverquetschung beim Einschieben des Vorsprunges 7 in die Ausnehmung 6 eine unlösbare Verbindung entsteht. Das Einpressen von Vorsprung 7 in die Ausnehmung 6 erfolgt so, dass beide Seitenteile 1 , 2 um ihre Breite axial versetzt nebeneinander gelegt und dann durch Aufwenden einer Kraft axial ineinander verpreßt werden. Der in Figur 2 teilweise dargestellte und mit 8 bezeichnete Lagerkäfig weist die Seitenringe 9 und 10 auf, die durch Stege 11 miteinander verbunden sind, so dass Wälzkörper aufnehmende Taschen 12 entstehen. Die Stege 11 sind so profiliert, dass sie zunächst ausgehend von den beiden Seiten 9, 10 parallel zur nicht dargestellten Lagerachse verlaufen, anschließend schräg radial nach innen abfallen und sich abschließend in einem parallel zur Lagerachse verlaufenden Teilbereich vereinen. Ebenso wie der in Figur 1 dargestellte Streifen 1 weist der Käfig 8 an seinen aneinanderstoßenden Enden an jedem Seitenring 9 und 10 die Ausnehmung 6 und den Vorsprung 7 auf, wobei bei dieser Ausführung des Käfigs 8 nach dem Rundbiegen ein Einpressen des Vorsprunges 7 in die Ausnehmung 6 in ebenfalls axialer Richtung erfolgt.The strip shown in FIG. 1 and designated 1 has the side parts 2 and 3 which are connected to one another by webs 4 which are evenly spaced from one another, so that pockets 5 are formed. The strip 1 is profiled in such a way that an M-shaped cage is formed after it has been bent round. Each side part 2 and 3 has a recess 6 at one end and a projection 7 at the other end, which are designed as a bore or as a cylinder, the projection 7 being oversized with respect to the recess 6, so that when the material is squeezed Inserting the projection 7 into the recess 6 creates a permanent connection. The projection 7 is pressed into the recess 6 in such a way that the two side parts 1, 2 are placed axially offset next to one another by their width and are then pressed axially into one another by the application of a force. The bearing cage shown partially in FIG. 2 and designated 8 has the side rings 9 and 10, which are connected to one another by webs 11, so that pockets 12 receiving rolling elements are formed. The webs 11 are profiled in such a way that, starting from the two sides 9, 10, they first run parallel to the bearing axis (not shown), then fall obliquely radially inwards and finally unite in a partial region running parallel to the bearing axis. Like the strip 1 shown in FIG. 1, the cage 8 has at its abutting ends on each side ring 9 and 10 the recess 6 and the projection 7, with this embodiment of the cage 8 pressing the projection 7 into the recess after the round bending 6 also takes place in the axial direction.
Im Gegensatz dazu ist der Käfig 8 in Figur 3 mit Ausnehmungen 6 und Vor- Sprüngen 7 so ausgestattet, dass diese nach dem Rundbiegen durch ein radiales Verschieben ineinander gebracht werden müssen. Das heißt, beide Stoßstellen werden um die Stärke der Seitenringe 9, 10 radial zueinander versetzt und dann durch Aufwenden einer Kraft ineinander verpreßt, so dass wiederum durch plastische Verformung ein unlösbar Materialverbund an beiden Stoßstellen gebildet ist.In contrast to this, the cage 8 in FIG. 3 is provided with recesses 6 and projections 7 in such a way that they have to be brought into one another by radial displacement after the round bending. This means that both joints are radially offset from one another by the thickness of the side rings 9, 10 and then pressed into one another by applying a force, so that an inseparable material bond is again formed at both joints by plastic deformation.
In den beschriebenen Ausführungsbeispielen sind die Stoßstellen jeweils so gelegt, dass sie in den Bereich einer Tasche 5, 12 fallen. Deren Anordnung im Stegbereich ist jedoch genauso gut möglich. In the exemplary embodiments described, the joints are each placed in the area of a pocket 5, 12. However, their arrangement in the web area is just as possible.
Bezugszeichenreference numeral
Streifenstrip
Seitenteilside panel
Seitenteilside panel
Stegweb
Taschebag
Ausnehmungrecess
Vorsprunghead Start
KäfigCage
Seitenringside ring
Seitenringside ring
Stegweb
Tasche bag

Claims

Patentansprüche claims
1. Aus einem Band (1 ) hergestelltes Formteil, dessen in Umfangsrichtung sich berührende Enden unlösbar miteinander verbunden sind, dadurch gekennzeichnet, dass an einem Ende des Bandes (1 ) eine Ausnehmung (6) und am anderen Ende ein ein Übermaß aufweisender Vorsprung (7) angeordnet sind, die nach dem Rundbiegen des Bandes (1 ) durch Aufwenden einer Kraft in axialer oder radialer Richtung ineinander gefügt sind, so dass durch plastische Verformung ein unlösbarer Preßverband gebildet ist.1. From a band (1) molded part, the ends of which contact in the circumferential direction are non-detachably connected, characterized in that at one end of the band (1) has a recess (6) and at the other end an excess projection (7 ) are arranged, which are bent into one another after the bending of the band (1) by applying a force in the axial or radial direction, so that an inseparable press fit is formed by plastic deformation.
2. Formteil nach Anspruch 1 , dadurch gekennzeichnet, dass es als ein aus Stegen (11 ) und Seitenringen (9,10) bestehender rotationssymmetrischer Käfig (8) für ein Wälzlager ausgebildet ist, wobei wenigstens ein Seitenring (9,10) an einem Ende eine Ausnehmung (6) und am anderen Ende einen Vorsprung (7) aufweist.2. Shaped part according to claim 1, characterized in that it is designed as a rotationally symmetrical cage (8) consisting of webs (11) and side rings (9, 10) for a rolling bearing, at least one side ring (9, 10) at one end has a recess (6) and at the other end a projection (7).
3. Formteil nach Anspruch 1 , dadurch gekennzeichnet, dass es als ein Impulsrad für eine Einrichtung zum Messen einer Drehzahl eines ro- tiernden Bauteils ausgebildet ist, das in Umfangsrichtung gleichmäßig voneinander beabstandete Zählabschnitte aufweist, die mit einer Sensoreinrichtung zusammenwirken, wobei das Impulsrad mit dem rotieren- den Bauteil verbindbar ist.3. Molding according to claim 1, characterized in that it is designed as a pulse wheel for a device for measuring a rotational speed of a rotating component, which has circumferentially evenly spaced counting sections which cooperate with a sensor device, the pulse wheel with the rotating component is connectable.
4. Formteil nach Anspruch 1 , dadurch gekennzeichnet, dass die Ausnehmung (6) als eine Aufnahmebohrung und der Vorsprung (7) als ein Zylinder ausgebildet sind.4. Molding according to claim 1, characterized in that the recess (6) is designed as a receiving bore and the projection (7) as a cylinder.
5. Formteil nach Anspruch 1 , dadurch gekennzeichnet, dass das Band (1 ) aus einem Eisenwerkstoff, aus Kupfer oder aus einer Kupferlegierung, aus Aluminium oder aus einer Aluminiumlegierung oder aus einem Kunststoff besteht. 5. Molding according to claim 1, characterized in that the band (1) consists of an iron material, copper or a copper alloy, aluminum or an aluminum alloy or a plastic.
6. Verfahren zum Herstellen eines Käfigs (8) nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass gegebenenfalls zunächst ein endloses Ausgangsband entsprechend dem gewünschten späteren Quer- schnitt des Käfigs (8) durch einen Formgebungsvorgang profiliert wird, danach Taschen (12) für die Aufnahme von Wälzkörpern ausgestanzt werden, anschließend gegebenfalls dieTaschen (12) mit Führungsund/oder Halteflächen versehen werden, danach ein Streifen (1) abgelängt wird, der danach an seinen gegenüberliegenden Enden mit der Ausnehmung (6) und mit dem Vorsprung (7) versehen wird, anschließend das Biegen des Streifens (1 ) in die Ringform erfolgt, bevor durch axiales oder radiales Ineinanderpressen des Vorsprungs (7) in die Ausnehmung (6) der formstabile Käfig (8) gebildet ist.6. A method for producing a cage (8) according to claims 1 and 2, characterized in that, if necessary, an endless starting strip is first profiled by a shaping process in accordance with the desired later cross section of the cage (8), then pockets (12) for the receptacle of rolling elements are punched out, the pockets (12) are then optionally provided with guide and / or holding surfaces, then a strip (1) is cut to length, which is then provided with the recess (6) and the projection (7) at its opposite ends the strip (1) is then bent into the ring shape before the dimensionally stable cage (8) is formed by axially or radially pressing the projection (7) into the recess (6).
7. Verfahren zum Herstellen eines Impulsrades nach den Ansprüchen 1 und 3, dadurch gekennzeichnet, dass in einem endlosen Ausgangsband als Zählabschnitte wirkende Taschen ausgestantzt werden, danach ein Streifen abgelängt wird, der anschließend an seinen gegenüberliegenden Enden mit der Ausnehmung und mit dem Vorsprung ver- sehen wird, danach das Biegen des Streifens in die Ringform erfolgt, bevor durch axiales oder radiales Ineinanderpressen des Vorsprunges in die Ausnehmung das formstabile Impulsrad gebildet ist. 7. A method for producing a pulse wheel according to claims 1 and 3, characterized in that pockets acting as counting sections are stamped out in an endless output band, then a strip is cut to length, which then ver at its opposite ends with the recess and with the projection will be seen, then the strip is bent into the ring shape before the dimensionally stable impulse wheel is formed by axially or radially pressing the projection into the recess.
EP01903682A 2000-03-10 2001-01-31 Moulded part formed from a tape Withdrawn EP1261812A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10011651A DE10011651B4 (en) 2000-03-10 2000-03-10 Rotationally symmetrical molded part
DE10011651 2000-03-10
PCT/EP2001/000995 WO2001069099A1 (en) 2000-03-10 2001-01-31 Moulded part formed from a tape

Publications (1)

Publication Number Publication Date
EP1261812A1 true EP1261812A1 (en) 2002-12-04

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EP01903682A Withdrawn EP1261812A1 (en) 2000-03-10 2001-01-31 Moulded part formed from a tape

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US (1) US6883968B2 (en)
EP (1) EP1261812A1 (en)
DE (1) DE10011651B4 (en)
WO (1) WO2001069099A1 (en)

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Also Published As

Publication number Publication date
US20030077017A1 (en) 2003-04-24
US6883968B2 (en) 2005-04-26
DE10011651A1 (en) 2001-09-13
WO2001069099A1 (en) 2001-09-20
DE10011651B4 (en) 2009-12-24

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