JP2004353867A - 導電性セラミック軸受 - Google Patents
導電性セラミック軸受 Download PDFInfo
- Publication number
- JP2004353867A JP2004353867A JP2004155516A JP2004155516A JP2004353867A JP 2004353867 A JP2004353867 A JP 2004353867A JP 2004155516 A JP2004155516 A JP 2004155516A JP 2004155516 A JP2004155516 A JP 2004155516A JP 2004353867 A JP2004353867 A JP 2004353867A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- conductive
- ray tube
- tsc
- rolling elements
- 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.)
- Pending
Links
Images
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
- F16C33/62—Selection of substances
-
- 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
- F16C33/32—Balls
-
- 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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/002—Conductive elements, e.g. to prevent static electricity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S384/00—Bearings
- Y10S384/90—Cooling or heating
- Y10S384/913—Metallic compounds
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Ceramic Products (AREA)
Abstract
【解決手段】導電性セラミック軸受の全構成要素が好ましくはTSCを含んでおり、導電性被覆又は潤滑被覆が不要で済む。これらの軸受は、軸受玉、ころ又は針等のような1以上の転動体(19)を含んでいてよい。これらのセラミック軸受は、X線イメージング・システムのX線管軸受アセンブリ(15a、15b)、又は導電性軸受を必要とするその他任意のシステムでの利用に理想的である。
【選択図】 図1
Description
導電率(mΩ*m) 0.2〜0.5 0.22〜0.35
熱伝導率(W/mK) 24.3 37
硬度(HRc) >62 40〜100
ヤング率(GPa) 207 325
剪断弾性率(GPa) 80.23 134
熱膨張率(1/℃) 11.07 9.2×10-6
11 カソード
12 回転シャフト
13 回転子
14 アノード・ターゲット
15a、15b 軸受アセンブリ
16 固定子
17 内レース
18 外レース
19 軸受転動体
20 X線管
Claims (10)
- Ti3SiC2(TSC)を含んでいる導電性セラミック軸受。
- 1以上の導電性転動体(19)を含んでいる請求項1に記載の導電性セラミック軸受。
- 前記1以上の導電性転動体(19)は軸受玉、ころ及び針の1以上を含んでいる、請求項2に記載の導電性セラミック軸受。
- (a)前記1以上の導電性転動体(19)の1以上に施される伝導性被覆と、
(b)前記1以上の導電性転動体(19)の1以上に施される不導性被覆との少なくとも一方をさらに含んでいる請求項2又は請求項3に記載の導電性セラミック軸受。 - 内レース(17)と、
外レース(18)と、
前記内レースと前記外レースとの間に回転自在に配置されている複数の導電性軸受転動体(19)とを備えており、
各々の導電性軸受転動体はTi3SiC2(TSC)を含んでいる、転動体軸受アセンブリ(15a、15b)。 - 前記内レース(17)は導電性であり、前記外レース(18)は導電性である、請求項5に記載の転動体軸受アセンブリ。
- 前記内レース(17)はTi3SiC2(TSC)を含んでおり、前記外レース(18)はTi3SiC2(TSC)を含んでいる、請求項5又は請求項6に記載の転動体軸受アセンブリ。
- 各々の導電性軸受転動体(19)は軸受玉、ころ及び針の1以上を含んでいる、請求項5〜請求項7のいずれか一項に記載の転動体軸受アセンブリ。
- X線を発生して焦点スポット整列経路に沿って目標物に向けて照射するX線管(20)であって、
電子を発生するように動作するように前記X線管の内部に配置されているカソード(11)と、
前記電子による衝突時にX線を発生するように動作するように前記カソードに対して配置されているアノード・アセンブリ(14)と、
前記カソードに対して前記アノード・アセンブリの回転を支持することが可能な軸受アセンブリ(15a、15b)とを備えており、
該軸受アセンブリは、Ti3SiC2(TSC)を含む導電性セラミック軸受を含んでいる、X線管(20)。 - 前記導電性セラミック軸受は、軸受玉、ころ及び針の1以上を含む導電性セラミック軸受転動体(19)を含んでいる、請求項9に記載のX線管。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/445,590 US20050254739A1 (en) | 2003-05-27 | 2003-05-27 | Electrically conducting ceramic bearing rolling elements |
US10/630,284 US7044644B2 (en) | 2003-05-27 | 2003-07-30 | Electrically conducting ceramic bearings |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004353867A true JP2004353867A (ja) | 2004-12-16 |
JP2004353867A5 JP2004353867A5 (ja) | 2009-08-06 |
Family
ID=33456653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004155516A Pending JP2004353867A (ja) | 2003-05-27 | 2004-05-26 | 導電性セラミック軸受 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7044644B2 (ja) |
JP (1) | JP2004353867A (ja) |
DE (1) | DE102004021466A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
EP2128465B1 (de) * | 2008-05-14 | 2011-07-06 | Siemens Aktiengesellschaft | Wälzlager, Wälzkörper für Wälzlager und Gerät mit Wälzlager |
US8529136B2 (en) * | 2009-03-30 | 2013-09-10 | Wafertech, Llc | High temperature ball bearing |
DE102013217517A1 (de) | 2013-09-03 | 2015-03-05 | Schaeffler Technologies Gmbh & Co. Kg | Wälzlager und Wälzkörper zum Abbau elektrischer Potentiale |
DE102018218432B4 (de) * | 2018-10-29 | 2023-05-17 | Minebea Mitsumi Inc. | Drehanodenlagerung für eine Röntgenröhre und Drehanode für eine Röntgenröhre |
CN110137061A (zh) * | 2019-05-31 | 2019-08-16 | 麦默真空技术无锡有限公司 | 一种耐高温x射线ct管 |
CN115376871A (zh) * | 2021-05-18 | 2022-11-22 | 西门子爱克斯射线真空技术(无锡)有限公司 | X射线管及x射线发生装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07243447A (ja) * | 1994-03-07 | 1995-09-19 | Toshiba Corp | 摺動部材、転がり軸受、回転陽極x線管および摺動部材の製造方法 |
JP2000192969A (ja) * | 1998-12-24 | 2000-07-11 | Nsk Ltd | 転がり軸受 |
JP2002247798A (ja) * | 2001-02-20 | 2002-08-30 | Sanyo Denki Co Ltd | ファンモータ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0678769B2 (ja) | 1987-04-13 | 1994-10-05 | 石川島播磨重工業株式会社 | セラミック軸受取付構造 |
JPH02140027U (ja) | 1989-04-27 | 1990-11-22 | ||
DE60021451T2 (de) | 1999-03-04 | 2006-06-08 | NGK Spark Plug Co., Ltd., Nagoya | Keramikkugel für Kugellager |
US6158894A (en) | 1999-07-28 | 2000-12-12 | Saint-Gobain Ceramics & Plastics, Inc. | All ceramic bearing |
US6702466B2 (en) * | 1999-10-15 | 2004-03-09 | Ngk Spark Plug Co., Ltd. | Ceramic dynamic-pressure bearing, motor having bearing, hard disk drive, polygon scanner, and method for manufacturing ceramic dynamic-pressure bearing |
US6508591B2 (en) | 2000-08-31 | 2003-01-21 | Ngk Spark Plug Co., Ltd. | Conductive ceramic bearing ball, ball bearing, motor having bearing, hard disk drive, and polygon scanner |
US6874942B2 (en) * | 2001-03-02 | 2005-04-05 | Nsk Ltd. | Rolling device |
US6505974B2 (en) | 2001-05-02 | 2003-01-14 | Honeywell International, Inc. | Ceramic ball bearings and assembly |
-
2003
- 2003-07-30 US US10/630,284 patent/US7044644B2/en not_active Expired - Fee Related
-
2004
- 2004-04-30 DE DE102004021466A patent/DE102004021466A1/de not_active Ceased
- 2004-05-26 JP JP2004155516A patent/JP2004353867A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07243447A (ja) * | 1994-03-07 | 1995-09-19 | Toshiba Corp | 摺動部材、転がり軸受、回転陽極x線管および摺動部材の製造方法 |
JP2000192969A (ja) * | 1998-12-24 | 2000-07-11 | Nsk Ltd | 転がり軸受 |
JP2002247798A (ja) * | 2001-02-20 | 2002-08-30 | Sanyo Denki Co Ltd | ファンモータ |
Also Published As
Publication number | Publication date |
---|---|
US20040240763A1 (en) | 2004-12-02 |
US7044644B2 (en) | 2006-05-16 |
DE102004021466A1 (de) | 2004-12-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4097759A (en) | X-ray tube | |
US8848875B2 (en) | Enhanced barrier for liquid metal bearings | |
US8542799B1 (en) | Anti-fretting coating for attachment joint and method of making same | |
US7751530B2 (en) | High flux X-ray target and assembly | |
US9263224B2 (en) | Liquid bearing assembly and method of constructing same | |
JP2004353867A (ja) | 導電性セラミック軸受 | |
JP5394002B2 (ja) | X線管軸受用ケージ | |
US4097760A (en) | X-ray tube having bearing lubrication | |
KR101824135B1 (ko) | 열적 손상을 방지하는 양극 회전형 엑스선관 및 엑스선관 장치 | |
US6807348B2 (en) | Liquid metal heat pipe structure for x-ray target | |
US7492870B2 (en) | Method for coating a carbon-carbon composite x-ray tube bearing cage | |
US7505564B2 (en) | Composite coating for improved wear resistance for x-ray tube bearings | |
US9275822B2 (en) | Liquid metal containment in an X-ray tube | |
US6891928B2 (en) | Liquid metal gasket in x-ray tubes | |
US20080095316A1 (en) | Anode assembly bearing apparatus for an x-ray device | |
KR101948303B1 (ko) | 플레인 베어링, 및 이를 구비한 양극 회전형 엑스선관 | |
JP2002134047A (ja) | X線管軸受 | |
JP2004353867A5 (ja) | ||
US20050254739A1 (en) | Electrically conducting ceramic bearing rolling elements | |
US11887803B2 (en) | X-ray tube and X-ray generating apparatus | |
JP2006179231A (ja) | 回転陽極x線管 | |
US20100284517A1 (en) | Moving high flux x-ray target and assembly | |
US8744047B2 (en) | X-ray tube thermal transfer method and system | |
US7397897B2 (en) | Composite coating for improved wear resistance for x-ray tube bearings | |
JP2982915B2 (ja) | 回転陽極x線管 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070515 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070515 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090623 |
|
RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20090623 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20090623 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20090910 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20091013 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20091202 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20100601 |