EP2920806A1 - Bearing unit for rotary anodes of x-ray tubes - Google Patents

Bearing unit for rotary anodes of x-ray tubes

Info

Publication number
EP2920806A1
EP2920806A1 EP13823927.2A EP13823927A EP2920806A1 EP 2920806 A1 EP2920806 A1 EP 2920806A1 EP 13823927 A EP13823927 A EP 13823927A EP 2920806 A1 EP2920806 A1 EP 2920806A1
Authority
EP
European Patent Office
Prior art keywords
bearing
shaft
unit according
angular contact
contact ball
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13823927.2A
Other languages
German (de)
French (fr)
Other versions
EP2920806B1 (en
Inventor
Wolfgang Kaika
Stefan Tritthart
Thomas MAUSSNER
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.)
Paul Mueller GmbH and Co KG Unternehmensbeteiligungen
Original Assignee
Paul Mueller GmbH and Co KG Unternehmensbeteiligungen
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 Paul Mueller GmbH and Co KG Unternehmensbeteiligungen filed Critical Paul Mueller GmbH and Co KG Unternehmensbeteiligungen
Publication of EP2920806A1 publication Critical patent/EP2920806A1/en
Application granted granted Critical
Publication of EP2920806B1 publication Critical patent/EP2920806B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08—Anodes; Anti cathodes
    • H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
    • H01J35/101—Arrangements for rotating anodes, e.g. supporting means, means for greasing, means for sealing the axle or means for shielding or protecting the driving
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/10—Drive means for anode (target) substrate
    • H01J2235/1006—Supports or shafts for target or substrate
    • H01J2235/102—Materials for the shaft
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/10—Drive means for anode (target) substrate
    • H01J2235/1046—Bearings and bearing contact surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/10—Drive means for anode (target) substrate
    • H01J2235/1046—Bearings and bearing contact surfaces
    • H01J2235/1053—Retainers or races

Definitions

  • the invention relates to a bearing unit for rotary anodes of x-ray tubes.
  • the invention has for its object to produce a storage unit for such rotary anodes of X-ray tubes, which is particularly easy to install.
  • the storage unit according to the invention with the features of claim 1 is compact and consists of a small number of parts which can be pre-assembled in order to install the thus preassembled storage unit easy to install in the corresponding recess in the X-ray tube.
  • the bearing unit can absorb axial forces to some extent.
  • the use of two angular contact ball bearings eliminates the need for elaborate shaft production.
  • a relatively ponderegünster material eg, unhardened steel
  • the spacer elements ensure a positionally secure positioning of the bearing elements on the shaft, wherein the inner spacer element is in contact with the inner rings of the angular contact ball bearings and the outer spacer element is in contact with the outer rings of the angular contact ball bearings.
  • an angular contact ball bearing or both angular contact ball bearings with the inner ring on a shoulder of the shaft are thus fixed easy to install in the axial direction.
  • the angular contact ball bearings are oriented opposite to each other, ie, the respective open side of the angular contact ball bearings are either facing each other or facing away from each other.
  • the open shoulder of the angular contact ball bearing of the first bearing element is arranged in the direction of the flange end of the shaft and the open shoulder of the angular contact ball bearing of the further bearing element in the direction of the flange distal end of the shaft.
  • the spacer element arranged between the outer rings and / or the inner rings of the bearing elements may be formed as a divided spacer elements.
  • a divided spacer element is understood to mean that the spacer element consists of several separate parts (for example a plurality of ring segments).
  • a first (e.g., larger) standard sized ring segment may be used, and further one or more precision made spacers to fill the desired distance between the outer rings and / or inner rings of the bearing elements.
  • FIG. 1 is a schematic partial sectional view of a storage unit; and FIG. 2 shows an enlarged detail with a storage unit whose
  • Stemming element is locked by plastic deformation of the shaft.
  • the bearing unit 1 shown in Fig. 1 has a shaft 2 with a flange element 3 to which a rotary anode (for example according to DE 30 41 558 A1) can be attached.
  • a rotary anode for example according to DE 30 41 558 A1
  • the entire storage unit 1 can be inserted into a designated and not shown recess of the x-ray tube and locked there in the usual way (eg by screwing).
  • the bearing unit 1 has to receive the shaft 2, a first bearing element 4 and a further bearing element 5.
  • the first bearing element 4 is formed by an attached to the shaft 2 angular contact ball bearing 6, which has an inner ring 7 and an outer ring 8.
  • the second bearing element 5 is formed by a mounted on the shaft 2 angular contact ball bearing 9, which has an inner ring 10 and an outer ring 1 1.
  • the open side of the angular contact ball bearing 6 is formed on the outer ring 8 and is arranged in the direction of the flange-side end of the shaft 2.
  • the open side of the angular contact ball bearing 9 is formed on the outer ring 1 1 and is arranged in the direction of the flange 3 opposite end of the shaft 2.
  • the inner rings 7 and 10 are dimensionally exactly spaced by a spacer element 12.
  • a further spacer element 13 is arranged between the outer rings 8 and 1 1, a further spacer element 13 is arranged.
  • the angular contact ball bearing 6 is applied with its inner ring 7 at a shoulder of the shaft 2.
  • the Verstemmelement 14 is sleeve-shaped. More specifically, the caulking 14 has the shape of a ring or a hollow cylinder. 2 shows an enlarged detail of a storage unit 201.
  • the bearing unit 201 differs from the bearing unit 1 only by a differently shaped shaft 202. The other components remain unchanged, so that reference can be made in this regard to the comments on Fig. 1.
  • the caulking 14 is locked in the embodiment of FIG. 2 by a plastically deformed end portion 16 of the shaft 202 on the shaft 202.
  • An axial displacement of the Verstemmelements 14 is no longer possible.
  • the components of the bearing unit 201 are thus securely clamped together.
  • the plastic deformation of the end region 16 of the shaft 202 can be carried out, for example, by applying a force directed in the axial direction of the shaft.
  • the shaft 202 is identical to the shaft 2 of FIG. 1.

Abstract

The invention relates to a bearing unit (1) for rotary anodes of x-ray tubes, comprising a shaft (2) and a flange element (3) to which a rotary anode can be attached, wherein: the bearing unit (1) can be inserted into a cutout within the x-ray tube and locked in place; the shaft (2) is mounted via a first bearing element (4) and a further bearing element (5); the first bearing element (4) and the further bearing element (5) each consists of an angular ball bearing (6, 9) mounted on the shaft (2) and having an inner ring (7, 10) and an outer ring (8, 11); and at least one spacer element (12, 13) is mounted between the inner rings (7, 10) and/or the outer rings (8, 11) of the first and the second bearing element (4, 5).

Description

Lagereinheit für Drehanoden von Röntgenröhren BESCHREIBUNG  Rotary Anode Storage Unit of X-Ray Tubes DESCRIPTION
Die Erfindung betrifft eine Lagereinheit für Drehanoden von Röntgenröhren. The invention relates to a bearing unit for rotary anodes of x-ray tubes.
Aus der DE 30 41 558 A1 ist z.B. aus Zeichnungsfigur 1 eine Lagereinheit für Drehanoden von Röntgenröhren bekannt, wobei die Drehanode in einem teilweise wiedergegebenen evakuierten Glaskolben untergebracht ist. From DE 30 41 558 A1, e.g. From Figure 1 a bearing unit for rotary anodes of X-ray tubes known, wherein the rotary anode is housed in a partially reproduced evacuated glass bulb.
Der Erfindung liegt die Aufgabe zugrunde, eine Lagereinheit für derartige Drehanoden von Röntgenröhren herzustellen, welche besonders montagefreundlich ist. The invention has for its object to produce a storage unit for such rotary anodes of X-ray tubes, which is particularly easy to install.
Diese Aufgabe wird durch eine Lagereinheit mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausführungsformen sind in den Unteransprüchen beschrieben. Die erfindungsgemäße Lagereinheit mit den Merkmalen des Patentanspruchs 1 ist kompakt ausgebildet und besteht aus einer geringen Anzahl von Teilen, welche vormontiert werden können, um die derart vormontierte Lagereinheit montagefreundlich in die entsprechende Ausnehmung in der Röntgenröhre einschieben zu können. This object is achieved by a storage unit having the features of claim 1. Advantageous embodiments are described in the subclaims. The storage unit according to the invention with the features of claim 1 is compact and consists of a small number of parts which can be pre-assembled in order to install the thus preassembled storage unit easy to install in the corresponding recess in the X-ray tube.
Durch die Ausführung der ersten Lagerelemente als Schrägkugellager wird es ermöglicht, dass die Lagereinheit auch in gewissem Umfang Axialkräfte aufnehmen kann. Außerdem entfällt durch die Verwendung von zwei Schrägkugellagern eine aufwändige Wellenfertigung. Auch kann für die Welle ein relativ kostengünster Werkstoff (z.B. ungehärteter Stahl) verwendet werden. Die Distanzelemente sorgen für eine lagesichere Positionierung der Lagerelemente auf der Welle, wobei das innenliegende Distanzelement mit den Innenringen der Schrägkugellager in Kontakt steht und das außenliegende Distanzelement mit den Außenringen der Schrägkugellager in Kontakt steht. By the execution of the first bearing elements as angular contact ball bearings, it is possible that the bearing unit can absorb axial forces to some extent. In addition, the use of two angular contact ball bearings eliminates the need for elaborate shaft production. Also, a relatively kostengünster material (eg, unhardened steel) can be used for the shaft. The spacer elements ensure a positionally secure positioning of the bearing elements on the shaft, wherein the inner spacer element is in contact with the inner rings of the angular contact ball bearings and the outer spacer element is in contact with the outer rings of the angular contact ball bearings.
Gemäß einer weiteren vorteilhaften Ausführungsform liegen ein Schrägkugellager oder beide Schrägkugellager mit dem Innenring an einem Absatz der Welle an und sind damit in axialer Richtung montagefreundlich fixiert. According to a further advantageous embodiment, an angular contact ball bearing or both angular contact ball bearings with the inner ring on a shoulder of the shaft and are thus fixed easy to install in the axial direction.
Durch die Befestigung des weiteren Lagerelements über ein insbesondere formschlüssiges, sich verjüngendes Verstemmelement bzw. durch eine plastische Verformung der Welle kann nach Anbringung der Lagerelemente auf der Welle eine Arretierung der Schrägkugellager und damit eine Fixierung der gesamten Lagereinheit auf einfache Weise stattfinden. Hierbei handelt es sich um schnelle und einfache Fixierungsmöglichkeiten, die kostengünstiger sind als Fixierlösungen, die auf eine Schraubenmutter o.ä. basieren. By attaching the further bearing element via a particular positive, tapered Verstemmelement or by a plastic deformation of the shaft can take place after attachment of the bearing elements on the shaft locking of the angular contact ball bearings and thus a fixation of the entire storage unit in a simple manner. These are quick and easy fixation options, which are less expensive than fixation solutions, the like on a nut or similar. based.
In einer vorteilhaften Ausführungsform sind die Schrägkugellager entgegengesetzt zueinander ausgerichtet, d.h. die jeweils offene Seite der Schrägkugellager sind entweder einander zugewandt oder einander abgewandt. In besonders bevorzugter Weise ist die offene Schulter des Schrägkugellagers des ersten Lagerelements in Richtung des flanschseitigen Endes der Welle angeordnet und die offene Schulter des Schrägkugellagers des weiteren Lagerelements in Richtung des flanschfernen Endes der Welle angeordnet. Dadurch ist eine besonders vorteilhafte Lagerung, insbesondere die Aufnahme von axialen Kräften aus unterschiedlichen axialen Richtungen, möglich. In an advantageous embodiment, the angular contact ball bearings are oriented opposite to each other, ie, the respective open side of the angular contact ball bearings are either facing each other or facing away from each other. In a particularly preferred manner, the open shoulder of the angular contact ball bearing of the first bearing element is arranged in the direction of the flange end of the shaft and the open shoulder of the angular contact ball bearing of the further bearing element in the direction of the flange distal end of the shaft. This is a particularly advantageous storage, in particular the absorption of axial forces from different axial directions, possible.
Nach einer weiteren vorteilhaften Ausführungsform kann das zwischen den Außenringen und/oder den Innenringen der Lagerelemente angeordnete Distanzelement als geteilte Distanzelemente ausgebildet sein. Unter einem geteilten Distanzelement wird hierbei verstanden, dass das Distanzelement aus mehreren separaten Teilen (z.B. mehrere Ringsegmente) besteht. Auf diese Weise kann z.B. ein erstes (z.B. größeres) in Standardmaßen hergestelltes Ringsegment verwendet werden und ferner eine oder mehrere auf exaktes Maß hergestellte Distanzscheiben zum Ausfüllen der gewünschten Distanz zwischen den Außenringen und/oder Innenringen der Lagerelemente. Die Erfindung ist anhand von Ausführungsbeispielen in den Zeichnungsfiguren weiter erläutert. Es zeigen: According to a further advantageous embodiment, the spacer element arranged between the outer rings and / or the inner rings of the bearing elements may be formed as a divided spacer elements. In this case, a divided spacer element is understood to mean that the spacer element consists of several separate parts (for example a plurality of ring segments). In this way, e.g. a first (e.g., larger) standard sized ring segment may be used, and further one or more precision made spacers to fill the desired distance between the outer rings and / or inner rings of the bearing elements. The invention is further explained by means of embodiments in the drawing figures. Show it:
Fig. 1 eine schematische Teilschnittansicht einer Lagereinheit; und Fig. 2 einen vergrößerten Ausschnitt mit einer Lagereinheit, dessenFig. 1 is a schematic partial sectional view of a storage unit; and FIG. 2 shows an enlarged detail with a storage unit whose
Verstemmelement durch plastische Verformung der Welle arretiert ist. Stemming element is locked by plastic deformation of the shaft.
Die in Fig. 1 abgebildete Lagereinheit 1 besitzt eine Welle 2 mit einem Flanschelement 3, an dem eine Drehanode (z.B. gemäß DE 30 41 558 A1 ) anbringbar ist. The bearing unit 1 shown in Fig. 1 has a shaft 2 with a flange element 3 to which a rotary anode (for example according to DE 30 41 558 A1) can be attached.
Die gesamte Lagereinheit 1 kann dabei in eine hierfür vorgesehene und nicht abgebildete Ausnehmung der Röntgenröhre eingeschoben und dort auf übliche Weise (z.B. durch Verschraubung) arretiert werden. Die Lagereinheit 1 besitzt zur Aufnahme der Welle 2 ein erstes Lagerelement 4 und ein weiteres Lagerelement 5. Das erste Lagerelement 4 ist durch ein auf der Welle 2 angebrachtes Schrägkugellager 6 gebildet, welches einen Innenring 7 und einen Außenring 8 aufweist. Das zweite Lagerelement 5 ist durch ein auf der Welle 2 angebrachtes Schrägkugellager 9 gebildet, welches einen Innenring 10 und einen Außenring 1 1 aufweist. The entire storage unit 1 can be inserted into a designated and not shown recess of the x-ray tube and locked there in the usual way (eg by screwing). The bearing unit 1 has to receive the shaft 2, a first bearing element 4 and a further bearing element 5. The first bearing element 4 is formed by an attached to the shaft 2 angular contact ball bearing 6, which has an inner ring 7 and an outer ring 8. The second bearing element 5 is formed by a mounted on the shaft 2 angular contact ball bearing 9, which has an inner ring 10 and an outer ring 1 1.
Die offene Seite des Schrägkugellagers 6 ist am Außenring 8 ausgebildet und ist in Richtung des flanschseitigen Endes der Welle 2 angeordnet. Am Innenring 7 sind zwei Schultern ausgebildet und die dem Flansch 3 abgewandte Seite des Schrägkugellagers 6 ist am Außenring 8 ebenfalls als Schulter ausgebildet. The open side of the angular contact ball bearing 6 is formed on the outer ring 8 and is arranged in the direction of the flange-side end of the shaft 2. On the inner ring 7 two shoulders are formed and the side facing away from the flange 3 of the angular contact ball bearing 6 is also formed on the outer ring 8 as a shoulder.
Die offene Seite des Schrägkugellagers 9 ist am Außenring 1 1 ausgebildet und ist in Richtung des dem Flansch 3 entgegengesetzten Endes der Welle 2 angeordnet. Am Innenring 10 sind zwei Schultern ausgebildet und die dem Flansch 3 zugewandte Seite des Schrägkugellagers 9 ist am Außenring 1 1 ebenfalls als Schulter ausgebildet. Die Innenringe 7 und 10 sind über ein Distanzelement 12 maßlich exakt beabstandet. In ähnlicher Weise ist zwischen den Außenringen 8 und 1 1 ein weiteres Distanzelement 13 angeordnet. The open side of the angular contact ball bearing 9 is formed on the outer ring 1 1 and is arranged in the direction of the flange 3 opposite end of the shaft 2. On the inner ring 10, two shoulders are formed and the flange 3 facing side of the angular contact ball bearing 9 is also formed on the outer ring 1 1 as a shoulder. The inner rings 7 and 10 are dimensionally exactly spaced by a spacer element 12. Similarly, between the outer rings 8 and 1 1, a further spacer element 13 is arranged.
Das Schrägkugellager 6 ist mit seinem Innenring 7 an einem Absatz der Welle 2 angelegt. The angular contact ball bearing 6 is applied with its inner ring 7 at a shoulder of the shaft 2.
Über das am flanschfernen Wellenende angebrachte Verstemmelement 14 wird die montierte Lagereinheit 1 arretiert. Das Verstemmelement 14 ist hülsenförmig ausgebildet. Genauer besitzt das Verstemmelement 14 die Form eines Ringes bzw. eines Hohlzylinders. Fig. 2 zeigt einen vergrößerten Ausschnitt aus einer Lagereinheit 201 . Die Lagereinheit 201 unterscheidet sich von der Lagereinheit 1 lediglich durch eine anders ausgebildete Welle 202. Die weiteren Komponenten bleiben unverändert, sodass diesbezüglich auf die Ausführungen zu Fig. 1 verwiesen werden kann. About the mounted on the flange end shaft end caulking 14, the mounted bearing unit 1 is locked. The Verstemmelement 14 is sleeve-shaped. More specifically, the caulking 14 has the shape of a ring or a hollow cylinder. 2 shows an enlarged detail of a storage unit 201. The bearing unit 201 differs from the bearing unit 1 only by a differently shaped shaft 202. The other components remain unchanged, so that reference can be made in this regard to the comments on Fig. 1.
Das Verstemmelement 14 ist in der Ausführungsform gemäß Fig. 2 durch einen plastisch verformten Endbereich 16 der Welle 202 auf der Welle 202 arretiert. Eine axiale Verschiebung des Verstemmelements 14 ist nicht mehr möglich. Die Komponenten der Lagereinheit 201 sind somit sicher miteinander verspannt. Die plastische Verformung des Endbereichs 16 der Welle 202 kann beispielsweise durch ein Aufbringen einer in axiale Richtung der Welle gerichtete Kraft erfolgen. Abgesehen von dem plastisch verformten Endbereich 16 ist die Welle 202 identisch zu der Welle 2 aus Fig. 1. The caulking 14 is locked in the embodiment of FIG. 2 by a plastically deformed end portion 16 of the shaft 202 on the shaft 202. An axial displacement of the Verstemmelements 14 is no longer possible. The components of the bearing unit 201 are thus securely clamped together. The plastic deformation of the end region 16 of the shaft 202 can be carried out, for example, by applying a force directed in the axial direction of the shaft. Apart from the plastically deformed end portion 16, the shaft 202 is identical to the shaft 2 of FIG. 1.
BEZUGSZEICHENLISTE , 201 LagereinheitREFERENCE LIST, 201 Storage unit
, 202 Welle , 202 wave
3 Flansch  3 flange
4, 5 Lagerelement  4, 5 bearing element
6 Schrägkugellager  6 Angular contact ball bearings
7 Innenring  7 inner ring
8 Außenring  8 outer ring
9 Schrägkugellager  9 Angular contact ball bearings
10 Innenring  10 inner ring
1 1 Außenring 1 1 outer ring
2, 13 Distanzelement 2, 13 spacer element
14 Verstemmelement  14 caulking
16 verformter Endbereich 16 deformed end region

Claims

SCHUTZANSPRÜCHE PROTECTION CLAIMS
1 . Lagereinheit (1 ) für Drehanoden von Röntgenröhren, mit einer Welle (2) und einem Flanschelement (3), an dem eine Drehanode anbringbar ist, wobei 1 . Bearing unit (1) for rotating anodes of X-ray tubes, comprising a shaft (2) and a flange member (3) to which a rotary anode is attachable, wherein
- die Lagereinheit (1 ) in eine Ausnehmung innerhalb der  - The storage unit (1) in a recess within the
Röntgenröhre einschiebbar und dort arretierbar ist,  X-ray tube can be inserted and arrested there,
- die Welle (2) über ein erstes Lagerelement (4) und ein weiteres Lagerelement (5) aufgenommen ist,  - The shaft (2) via a first bearing element (4) and a further bearing element (5) is accommodated,
- das erste Lagerelement (4) und das weitere Lagerelement (5) jeweils aus einem auf der Welle (2) angebrachten  - The first bearing element (4) and the further bearing element (5) each mounted on the shaft (2)
Schrägkugellager (6, 9) mit einem Innenring (7, 10) und einem Außenring (8, 1 1 ) besteht,  Angular contact ball bearing (6, 9) with an inner ring (7, 10) and an outer ring (8, 1 1),
- zwischen den Innenringen (7, 10) und/oder den Außenringen (8, 1 1 ) des ersten und des zweiten Lagerelements (4, 5) mindestens ein Distanzelement (12, 13) angebracht ist.  - Between the inner rings (7, 10) and / or the outer rings (8, 1 1) of the first and the second bearing element (4, 5) at least one spacer element (12, 13) is mounted.
2. Lagereinheit nach Anspruch 1 , wobei sowohl zwischen den Innenringen (7, 10) als auch zwischen den Außenringen (8, 1 1 ) des ersten und des zweiten Lagerelements (4, 5) jeweils mindestens ein Distanzelement (12, 13) angebracht ist. 2. Storage unit according to claim 1, wherein both between the inner rings (7, 10) and between the outer rings (8, 1 1) of the first and the second bearing element (4, 5) in each case at least one spacer element (12, 13) is mounted ,
3. Lagereinheit nach Anspruch 1 , wobei das erste Lagerelement (4) 3. Bearing unit according to claim 1, wherein the first bearing element (4).
und/oder das zweite Lagerelement (5) mit ihrem Innenring (7, 10) an einem Absatz der Welle (2) anliegen.  and / or the second bearing element (5) with its inner ring (7, 10) against a shoulder of the shaft (2).
4. Lagereinheit nach einem der vorhergehenden Ansprüche, wobei das Schrägkugellager (9) des weiteren Lagerelements (5) über ein 4. Bearing unit according to one of the preceding claims, wherein the angular contact ball bearing (9) of the further bearing element (5) via a
Verstemm element (14) an der Welle (2) befestigt ist. Caulking element (14) is attached to the shaft (2).
5. Lagereinheit nach Anspruch 4, wobei das Verstemmelement (14) als sich verjüngendes Verstemmelement ausgebildet ist. 5. Bearing unit according to claim 4, wherein the Verstemmelement (14) is designed as a tapered Verstemmelement.
6. Lagereinheit nach einem der Ansprüche 4 oder 5, wobei das 6. Storage unit according to one of claims 4 or 5, wherein the
Verstemmelement (14) als hülsenförmiges Verstemmelement (14) ausgebildet ist.  Verstemmelement (14) is formed as a sleeve-shaped Verstemmelement (14).
7. Lagereinheit nach einem der Ansprüche 4 bis 6, wobei das 7. Storage unit according to one of claims 4 to 6, wherein the
Verstemmelement (14) durch einen plastisch verformten Endbereich (16) der Welle fixiert ist.  Caulking element (14) is fixed by a plastically deformed end portion (16) of the shaft.
8. Lagereinheit nach einem der vorhergehenden Ansprüche, wobei die Welle (2) aus einem nichtgehärteten Stahlwerkstoff besteht. 8. Bearing unit according to one of the preceding claims, wherein the shaft (2) consists of a non-hardened steel material.
9. Lagereinheit nach einem der vorhergehenden Ansprüche, wobei die Schrägkugellager (6, 9) entgegengesetzt zueinander ausgerichtet sind. 9. Bearing unit according to one of the preceding claims, wherein the angular contact ball bearings (6, 9) are oriented opposite to each other.
10. Lagereinheit nach einem der vorhergehenden Ansprüche, wobei die offene Seite des Schrägkugellagers (6) des ersten Lagerelements (4) in Richtung des flanschseitigen Endes der Welle (2) angeordnet ist. 10. Bearing unit according to one of the preceding claims, wherein the open side of the angular contact ball bearing (6) of the first bearing element (4) in the direction of the flange-side end of the shaft (2) is arranged.
1 1 . Lagereinheit nach einem der vorhergehenden Ansprüche, wobei die offene Seite des Schrägkugellagers (9) des weiteren Lagerelements (5) in Richtung des dem Flansch (3) entgegengesetzten Endes der Welle (2) angeordnet ist. 1 1. Bearing unit according to one of the preceding claims, wherein the open side of the angular contact ball bearing (9) of the further bearing element (5) in the direction of the flange (3) opposite end of the shaft (2) is arranged.
12. Lagereinheit nach einem der vorhergehenden Ansprüche, wobei die offenen Seiten der Schrägkugellager (6, 9) am jeweiligen Außenring (8, 1 1 ) ausgebildet sind. 12. Bearing unit according to one of the preceding claims, wherein the open sides of the angular contact ball bearings (6, 9) on the respective outer ring (8, 1 1) are formed.
EP13823927.2A 2012-11-19 2013-11-19 Bearing unit for rotary anodes of x-ray tubes Active EP2920806B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012104447 2012-11-19
PCT/DE2013/100390 WO2014075664A1 (en) 2012-11-19 2013-11-19 Bearing unit for rotary anodes of x-ray tubes

Publications (2)

Publication Number Publication Date
EP2920806A1 true EP2920806A1 (en) 2015-09-23
EP2920806B1 EP2920806B1 (en) 2018-10-10

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EP13823927.2A Active EP2920806B1 (en) 2012-11-19 2013-11-19 Bearing unit for rotary anodes of x-ray tubes

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Country Link
US (1) US9520261B2 (en)
EP (1) EP2920806B1 (en)
JP (1) JP2016504537A (en)
CN (1) CN104781904A (en)
DE (1) DE202013105226U1 (en)
ES (1) ES2703544T3 (en)
WO (1) WO2014075664A1 (en)

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JP2016504537A (en) 2016-02-12
DE202013105226U1 (en) 2014-02-21
CN104781904A (en) 2015-07-15
US20160155599A1 (en) 2016-06-02
ES2703544T3 (en) 2019-03-11
WO2014075664A1 (en) 2014-05-22
US9520261B2 (en) 2016-12-13

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