EP2920806A1 - Unité palier pour anodes tournantes de tubes à rayons x - Google Patents

Unité palier pour anodes tournantes de tubes à rayons x

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)
English (en)
Other versions
EP2920806B1 (fr
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/fr
Application granted granted Critical
Publication of EP2920806B1 publication Critical patent/EP2920806B1/fr
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.

Landscapes

  • Rolling Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Support Of The Bearing (AREA)

Abstract

La présente invention concerne une unité palier (1) pour anodes tournantes de tubes à rayons X, comportant un arbre (2) et un élément formant joue (3) sur lequel une anode tournante peut être montée. L'unité palier (1) peut être introduite dans un évidement situé à l'intérieur des tubes à rayons X et bloquée dans ledit évidement, l'arbre (2) étant reçu par l'intermédiaire d'un premier élément de palier (4) et d'un autre élément de palier (5). Le premier élément de palier (4) et l'autre élément de palier (5) sont chacun constitués par un roulement à billes à contact oblique (6, 9) monté sur l'arbre (2) et présentent chacun une bague intérieure (7, 10) et une bague extérieure (8, 11), au moins un élément d'écartement (12, 13) étant monté entre la bague intérieure (7, 10) et la bague extérieure (8, 11) des éléments de palier (4, 5).
EP13823927.2A 2012-11-19 2013-11-19 Unité palier pour anodes tournantes de tubes à rayons x Active EP2920806B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012104447 2012-11-19
PCT/DE2013/100390 WO2014075664A1 (fr) 2012-11-19 2013-11-19 Unité palier pour anodes tournantes de tubes à rayons x

Publications (2)

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

Family

ID=49999652

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13823927.2A Active EP2920806B1 (fr) 2012-11-19 2013-11-19 Unité palier pour anodes tournantes de tubes à rayons x

Country Status (7)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105508442A (zh) * 2016-01-29 2016-04-20 西门子爱克斯射线真空技术(无锡)有限公司 X射线管的轴承组件及其x射线管
DE102021204081A1 (de) 2021-04-23 2022-10-27 Minebea Mitsumi Inc. Drehanodenlageranordnung und Drehanode für eine Röntgenröhre sowie Verfahren zur Montage einer Drehanodenlageranordnung

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3694685A (en) * 1971-06-28 1972-09-26 Gen Electric System for conducting heat from an electrode rotating in a vacuum
DE7920150U1 (de) * 1979-07-13 1981-01-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen Roentgenroehrendrehanode
DE3041558A1 (de) 1980-11-04 1982-06-09 Siemens AG, 1000 Berlin und 8000 München Verfahren zur herstellung von lagern fuer drehanoden von roentgenroehren und damit hergestellten roentgenroehren
JPH0226317A (ja) * 1988-07-15 1990-01-29 Toshiba Corp 軸受装置およびこれを用いた回転陽極形ｘ線管装置
KR0157252B1 (ko) * 1993-06-30 1998-11-16 김무 고인성 고강도 비조질강 봉재의 제조방법
JP3735926B2 (ja) * 1995-12-15 2006-01-18 日本精工株式会社 車輪支持用ハブユニット
DE19914826A1 (de) * 1999-03-31 2000-09-14 Siemens Ag Verfahren zum Herstellen von Bauteilen für Röntgenröhren
US6693990B1 (en) * 2001-05-14 2004-02-17 Varian Medical Systems Technologies, Inc. Low thermal resistance bearing assembly for x-ray device
FR2846784B1 (fr) * 2002-10-30 2005-02-11 Ge Med Sys Global Tech Co Llc Ensemble de palier pour le montage a rotation d'une anode rotative d'un dispositif d'emission de rayons x et dispositif d'emission de rayon x equipe d'un tel ensemble.
US7343002B1 (en) * 2003-02-05 2008-03-11 Varian Medical Systems Technologies, Inc. Bearing assembly
JP2006242257A (ja) * 2005-03-02 2006-09-14 Ntn Corp 車輪用軸受装置
ES2321433T3 (es) * 2006-04-04 2009-06-05 PAUL MULLER GMBH & CO. KG UNTERNEHMENSBETEILIGUNGEN Conjunto de cojinetes para anodos rotatorios de tubos de rayos x.
US20080056450A1 (en) * 2006-09-01 2008-03-06 General Electric Company X-ray tubes and methods of making the same
JP2008243694A (ja) * 2007-03-28 2008-10-09 Jtekt Corp Ｘ線管用転がり軸受およびｘ線管装置
US20100128848A1 (en) * 2008-11-21 2010-05-27 General Electric Company X-ray tube having liquid lubricated bearings and liquid cooled target
US8363787B2 (en) * 2009-03-25 2013-01-29 General Electric Company Interface for liquid metal bearing and method of making same
US20120144939A1 (en) * 2010-12-13 2012-06-14 Arne Lars Jonas Kullin Double Bearing Assembly for Rotating Shaft

Also Published As

Publication number Publication date
DE202013105226U1 (de) 2014-02-21
CN104781904A (zh) 2015-07-15
US20160155599A1 (en) 2016-06-02
WO2014075664A1 (fr) 2014-05-22
US9520261B2 (en) 2016-12-13
EP2920806B1 (fr) 2018-10-10
ES2703544T3 (es) 2019-03-11
JP2016504537A (ja) 2016-02-12

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