JPH0527951U - Dynamic pressure bearing for X-ray tube - Google Patents

Dynamic pressure bearing for X-ray tube

Info

Publication number
JPH0527951U
JPH0527951U JP7492991U JP7492991U JPH0527951U JP H0527951 U JPH0527951 U JP H0527951U JP 7492991 U JP7492991 U JP 7492991U JP 7492991 U JP7492991 U JP 7492991U JP H0527951 U JPH0527951 U JP H0527951U
Authority
JP
Japan
Prior art keywords
gallium
cylindrical portion
shaft portion
ray tube
dynamic pressure
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
Application number
JP7492991U
Other languages
Japanese (ja)
Inventor
賢一 角本
政良 大西
高橋  毅
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.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko Co Ltd
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 Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP7492991U priority Critical patent/JPH0527951U/en
Publication of JPH0527951U publication Critical patent/JPH0527951U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】 【目的】 潤滑剤に用いるガリウムおよびガリウム合金
に対する耐食性を有する上に、ガリウムおよびガリウム
合金の濡れ性が優れた円筒部と軸部を備えるX線管用動
圧軸受を提供する。 【構成】 円筒部16と軸部15は、ガリウムおよびガ
リウム合金に対する耐食性を有するタンタル素材の表面
に、800℃において0.5原子%のガリウムを溶解さ
せた金属材料で構成されている。したがって、円筒部1
6と軸部15は、ガリウムまたはガリウム合金の潤滑剤
20に対する耐食性を有する上に、円筒部16と軸部1
5がタンタルのみからなる場合に較べて、潤滑剤20の
濡れ性を改善できる。
(57) [Summary] [PROBLEMS] To provide a dynamic pressure bearing for an X-ray tube, which has corrosion resistance against gallium and a gallium alloy used as a lubricant and which has a cylindrical portion and a shaft portion having excellent wettability of gallium and a gallium alloy. .. [Structure] The cylindrical portion 16 and the shaft portion 15 are made of a metal material in which 0.5 atomic% of gallium is dissolved at 800 ° C. on the surface of a tantalum material having corrosion resistance against gallium and a gallium alloy. Therefore, the cylindrical portion 1
6 and the shaft portion 15 have corrosion resistance to the lubricant 20 made of gallium or a gallium alloy, and the cylindrical portion 16 and the shaft portion 1
The wettability of the lubricant 20 can be improved as compared with the case where 5 is composed only of tantalum.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

この考案は、回転陽極を有するX線管用動圧軸受に関する。 The present invention relates to a dynamic pressure bearing for an X-ray tube having a rotating anode.

【0002】[0002]

【従来の技術】[Prior Art]

従来、回転陽極を有するX線管用動圧軸受としては、回転陽極を支持する円筒 部と、上記円筒部内に所定の隙間を隔てて嵌合された軸部と、上記軸部と円筒部 の少なくとも一方に形成された動圧発生溝と、上記軸部と円筒部との隙間に充填 されたガリウムまたはガリウム合金の潤滑剤とを備えたものが提案されている。 Conventionally, as a dynamic pressure bearing for an X-ray tube having a rotating anode, a cylindrical portion supporting the rotating anode, a shaft portion fitted in the cylindrical portion with a predetermined gap, and at least the shaft portion and the cylindrical portion. It has been proposed to provide a dynamic pressure generating groove formed on one side and a lubricant of gallium or a gallium alloy filled in the gap between the shaft portion and the cylindrical portion.

【0003】 上記潤滑剤としてガリウム(Ga)またはガリウム合金を用いるのは、円筒部と 軸部との隙間が真空・高温(200〜500℃)であるという厳しい条件に耐える 必要があるためである。The reason for using gallium (Ga) or a gallium alloy as the lubricant is that it is necessary to withstand the severe conditions that the gap between the cylindrical portion and the shaft portion is vacuum and high temperature (200 to 500 ° C.). ..

【0004】 そして、潤滑剤がガリウムまたはガリウム合金であると、上記円筒部と軸部は 、この潤滑剤に対して耐食性を有する金属材料でなければならない。When the lubricant is gallium or a gallium alloy, the cylindrical portion and the shaft portion must be made of a metal material having corrosion resistance to the lubricant.

【0005】 このため、円筒部と軸部の金属材料として、ガリウムやガリウム合金に対する 耐食性を有するタンタル(Ta)を用いることが提案されている。Therefore, it has been proposed to use tantalum (Ta), which has corrosion resistance to gallium and gallium alloys, as the metal material of the cylindrical portion and the shaft portion.

【0006】[0006]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかしながら、ガリウムやガリウム合金はタンタルに対する濡れ性が悪いので 、上記円筒部と軸部とをタンタルのみで作った場合には、上記円筒部と軸部との 隙間に、ガリウムまたはガリウム合金からなる潤滑剤を充填しにくいという問題 がある。また、上記円筒部と軸部との間に上記潤滑剤を充填できたとしても、上 記軸部に対して円筒部が停止している間に、重力によって、上記円筒部と軸部と の隙間から上記潤滑剤が抜け落ちてしまうという問題もある。 However, since gallium and gallium alloy have poor wettability with tantalum, when the cylinder and shaft are made of tantalum only, the gap between the cylinder and shaft is lubricated with gallium or gallium alloy. There is a problem that it is difficult to fill the agent. Even if the lubricant can be filled between the cylindrical portion and the shaft portion, gravity of the cylindrical portion and the shaft portion is generated by gravity while the cylindrical portion is stopped with respect to the shaft portion. There is also a problem that the lubricant will fall out from the gap.

【0007】 そこで、この考案の目的は、潤滑剤に用いるガリウムおよびガリウム合金に対 する耐食性を有する上に、ガリウムおよびガリウム合金の濡れ性が優れた円筒部 と軸部を備えるX線管用動圧軸受を提供することにある。Therefore, an object of the present invention is to provide a dynamic pressure for an X-ray tube which has corrosion resistance against gallium and a gallium alloy used as a lubricant and which has excellent wettability of gallium and a gallium alloy. To provide a bearing.

【0008】[0008]

【課題を解決するための手段】[Means for Solving the Problems]

上記目的を達成するため、この考案のX線管用動圧軸受は、回転陽極を支持す る円筒部と、上記円筒部内に所定の隙間を隔てて嵌合された軸部と、上記軸部と 円筒部の少なくとも一方に形成された動圧発生溝と、上記軸部と円筒部との隙間 に充填されたガリウムまたはガリウム合金の潤滑剤とを備えたX線管用動圧軸受 において、上記円筒部と軸部は、タンタル素材の表面にガリウムを溶解もしくは イオン注入した金属材料で構成されていることを特徴としている。 To achieve the above object, a dynamic pressure bearing for an X-ray tube according to the present invention comprises a cylindrical portion supporting a rotating anode, a shaft portion fitted in the cylindrical portion with a predetermined gap, and the shaft portion. A dynamic pressure bearing for an X-ray tube comprising a dynamic pressure generating groove formed in at least one of the cylindrical parts, and a gallium or gallium alloy lubricant filled in a gap between the shaft part and the cylindrical part. The shaft and the shaft are characterized by being made of a metal material in which gallium is dissolved or ion-implanted on the surface of a tantalum material.

【0009】[0009]

【作用】[Action]

上記円筒部と軸部は、タンタル素材の表面にガリウムを溶解もしくはイオン 注入した金属材料で構成されているので、上記円筒部と軸部は、タンタルのみか らなる円筒部と軸部に較べて、ガリウムまたはガリウム合金からなる潤滑剤の濡 れ性が改善され、濡れ性が優れたものになる。したがって、上記軸部と円筒部と の間に上記潤滑剤を充填し易くなる。また、上記軸部に対して円筒部が停止して いる間に、重力によって上記円筒部と軸部との隙間から上記潤滑剤が抜け落ちて しまうことが防止される。また、上記濡れ性の改善により、上記円筒部と軸部と の間の潤滑性能が向上する。 Since the cylindrical portion and the shaft portion are made of a metal material in which gallium is dissolved or ion-implanted on the surface of a tantalum material, the cylindrical portion and the shaft portion are different from the cylindrical portion and the shaft portion made of only tantalum. The wettability of the lubricant made of gallium or gallium alloy is improved, and the wettability becomes excellent. Therefore, it becomes easy to fill the lubricant between the shaft portion and the cylindrical portion. Further, it is possible to prevent the lubricant from falling out of the gap between the cylindrical portion and the shaft portion due to gravity while the cylindrical portion is stopped with respect to the shaft portion. Further, the improvement of the wettability improves the lubrication performance between the cylindrical portion and the shaft portion.

【0010】[0010]

【実施例】【Example】

以下、この考案を図示の実施例により詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to illustrated embodiments.

【0011】 図1に示すように、X線管装置9は、ハウジング10内に冷却油通路aを介し てX線管11が配置され、上記X線管11内に陰極(カソード)12や陽極(アノ ード)13を収納している。As shown in FIG. 1, in an X-ray tube device 9, an X-ray tube 11 is arranged in a housing 10 via a cooling oil passage a, and a cathode (cathode) 12 and an anode are provided in the X-ray tube 11. (Anode) 13 is stored.

【0012】 具体的には、X線管11内の支持ブロック14の上部に軸部15が固定され、 上記軸部15に所定の隙間t(図2参照)を隔てて円筒部16が回転自在に嵌合さ れている。Specifically, the shaft portion 15 is fixed to the upper portion of the support block 14 in the X-ray tube 11, and the cylindrical portion 16 is rotatable with a predetermined gap t (see FIG. 2) in the shaft portion 15. Is fitted to.

【0013】 上記円筒部16の上部には、上記陽極13が固定され、円筒部16と共に陽極 13が回転する。The anode 13 is fixed to the upper part of the cylindrical portion 16, and the anode 13 rotates together with the cylindrical portion 16.

【0014】 なお、X線発生の原理は周知であり、本考案と直接関係がないために、詳細な 説明は省略する。上記円筒部16の下部にはロータ17が固定され、上記ロータ 17は上記支持ブロック14に遊嵌されている。Since the principle of X-ray generation is well known and is not directly related to the present invention, detailed description thereof will be omitted. A rotor 17 is fixed to the lower portion of the cylindrical portion 16, and the rotor 17 is loosely fitted in the support block 14.

【0015】 上記ロータ17に対向するX線管11の壁面にはステータ18が固定されてい る。A stator 18 is fixed to the wall surface of the X-ray tube 11 facing the rotor 17.

【0016】 なお、19は支持ブロック14と軸部15内に挿通された油冷管である。Reference numeral 19 is an oil cooling pipe inserted into the support block 14 and the shaft portion 15.

【0017】 そして、ステータ18に電圧を印加することにより、ロータ17が回転し、上 記ロータ17により、円筒部16とともに陽極13が回転する。Then, by applying a voltage to the stator 18, the rotor 17 rotates, and the rotor 17 rotates the anode 13 together with the cylindrical portion 16.

【0018】 図2に詳細に示すように、上記円筒部16と軸部15との隙間tには、ガリウ ム(Ga)またはガリウム合金の潤滑剤20が充填されている。As shown in detail in FIG. 2, a gap t between the cylindrical portion 16 and the shaft portion 15 is filled with a lubricant 20 of gallium (Ga) or gallium alloy.

【0019】 軸部15の上面および外周面には、動圧発生溝15c,…,15cが形成されてい る。Dynamic pressure generating grooves 15c, ..., 15c are formed on the upper surface and the outer peripheral surface of the shaft portion 15.

【0020】 上記円筒部16と軸部15は、ガリウムおよびガリウム合金に対する耐食性を 有するタンタル素材の表面に、800℃において0.5原子%のガリウムを溶解 させた金属材料で構成されている。つまり、円筒部16と軸部15の表面部分1 6a,15aは、ガリウムを含むタンタルリッチ合金で構成されている。The cylindrical portion 16 and the shaft portion 15 are made of a metal material in which 0.5 atomic% of gallium is dissolved at 800 ° C. on the surface of a tantalum material having corrosion resistance against gallium and a gallium alloy. That is, the surface portions 16a and 15a of the cylindrical portion 16 and the shaft portion 15 are made of a tantalum-rich alloy containing gallium.

【0021】 上記構成によれば、上記円筒部16と軸部15は、ガリウムまたはガリウム合 金の潤滑剤20に対する耐食性を有する上に、円筒部16と軸部15がタンタル のみからなる場合に較べて、潤滑剤20の濡れ性を改善でき、濡れ性を優れたも のにできる。According to the above configuration, the cylindrical portion 16 and the shaft portion 15 have corrosion resistance to the lubricant 20 made of gallium or gallium alloy, and, in addition, the cylindrical portion 16 and the shaft portion 15 are made of only tantalum. As a result, the wettability of the lubricant 20 can be improved and the wettability can be improved.

【0022】 したがって、上記軸部15と円筒部16との間に上記潤滑剤20を充填し易く なる。また、上記軸部15に対して円筒部16が停止している間に、重力によっ て上記円筒部16と軸部15との隙間から潤滑剤20が抜け落ちてしまうことを 防止できる。また、上記濡れ性の改善により、上記円筒部16と軸部15との間 の潤滑性能を向上できる。Therefore, it becomes easy to fill the lubricant 20 between the shaft portion 15 and the cylindrical portion 16. Further, it is possible to prevent the lubricant 20 from falling out of the gap between the cylindrical portion 16 and the shaft portion 15 due to gravity while the cylindrical portion 16 is stopped with respect to the shaft portion 15. Further, the improvement of the wettability can improve the lubrication performance between the cylindrical portion 16 and the shaft portion 15.

【0023】 尚、上記実施例では、タンタル素材の表面にガリウムを溶解させた金属材料で 円筒部16と軸部15とを構成したが、タンタル素材の表面にガリウムをイオン 注入した金属材料で円筒部と軸部を構成してもよい。In the above embodiment, the cylindrical portion 16 and the shaft portion 15 are made of a metallic material in which gallium is dissolved on the surface of the tantalum material, but the cylindrical portion is made of a metallic material in which gallium is ion-implanted on the surface of the tantalum material. You may comprise a part and a shaft part.

【0024】[0024]

【考案の効果】[Effect of the device]

以上より明らかなように、この考案のX線管用動圧軸受は、ガリウムおよびガ リウム合金に対する耐食性を有するタンタル素材の表面にガリウムを溶解もしく はイオン注入した金属材料で、円筒部と軸部を構成したものである。 As is clear from the above, the dynamic pressure bearing for an X-ray tube according to the present invention is a metal material in which gallium is dissolved or ion-implanted on the surface of a tantalum material having corrosion resistance to gallium and a gallium alloy. Is configured.

【0025】 したがって、この考案によれば、上記円筒部と軸部は、ガリウムまたはガリウ ム合金の潤滑剤に対する耐食性を有する上に、円筒部と軸部がタンタルのみから なる場合に較べて、上記潤滑剤の濡れ性を改善でき、濡れ性を優れたものにでき る。したがって、この考案によれば、軸部と円筒部との間に潤滑剤を充填し易く なる。さらに、上記軸部に対して円筒部が停止している間に、重力によって円筒 部と軸部との隙間からガリウムが抜け落ちてしまうことを防止できる。また、上 記濡れ性の改善により、上記円筒部と軸部との間の潤滑性能を向上できる。Therefore, according to the present invention, the cylindrical portion and the shaft portion have corrosion resistance against the lubricant of gallium or gallium alloy, and, in addition, the cylindrical portion and the shaft portion are made of tantalum alone. The wettability of the lubricant can be improved and the wettability can be improved. Therefore, according to this invention, it becomes easy to fill the lubricant between the shaft portion and the cylindrical portion. Further, it is possible to prevent gallium from falling out of the gap between the cylindrical portion and the shaft portion due to gravity while the cylindrical portion is stopped with respect to the shaft portion. In addition, the improvement of the above-mentioned wettability can improve the lubricating performance between the cylindrical portion and the shaft portion.

【図面の簡単な説明】[Brief description of drawings]

【図1】 この考案の実施例を含むX線管の断面図であ
る。
FIG. 1 is a sectional view of an X-ray tube including an embodiment of the present invention.

【図2】 上記実施例の断面図である。FIG. 2 is a cross-sectional view of the above embodiment.

【符号の説明】[Explanation of symbols]

9 X線管装置 10 ハウジング 11 X線管 12 陰極 13 陽極 14 支持ブロ
ック 15 軸部 16 円筒部 17 ロータ 18 ステータ 19 油冷管 20 潤滑剤 t 隙間 a 冷却油通路
9 X-ray tube device 10 Housing 11 X-ray tube 12 Cathode 13 Anode 14 Support block 15 Shaft part 16 Cylindrical part 17 Rotor 18 Stator 19 Oil cooling pipe 20 Lubricant t Gap a Cooling oil passage

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 回転陽極を支持する円筒部と、上記円筒
部内に所定の隙間を隔てて嵌合された軸部と、上記軸部
と円筒部の少なくとも一方に形成された動圧発生溝と、
上記軸部と円筒部との隙間に充填されたガリウムまたは
ガリウム合金の潤滑剤とを備えたX線管用動圧軸受にお
いて、 上記円筒部と軸部は、タンタル素材の表面にガリウムを
溶解もしくはイオン注入した金属材料で構成されている
ことを特徴とするX線管用動圧軸受。
1. A cylindrical portion supporting a rotating anode, a shaft portion fitted in the cylindrical portion with a predetermined gap, and a dynamic pressure generating groove formed in at least one of the shaft portion and the cylindrical portion. ,
In a dynamic pressure bearing for an X-ray tube, which comprises gallium or a gallium alloy lubricant filled in a gap between the shaft portion and the cylindrical portion, the cylindrical portion and the shaft portion dissolve gallium or ions on the surface of the tantalum material. A dynamic pressure bearing for an X-ray tube, which is composed of an injected metal material.
JP7492991U 1991-09-18 1991-09-18 Dynamic pressure bearing for X-ray tube Pending JPH0527951U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7492991U JPH0527951U (en) 1991-09-18 1991-09-18 Dynamic pressure bearing for X-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7492991U JPH0527951U (en) 1991-09-18 1991-09-18 Dynamic pressure bearing for X-ray tube

Publications (1)

Publication Number Publication Date
JPH0527951U true JPH0527951U (en) 1993-04-09

Family

ID=13561541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7492991U Pending JPH0527951U (en) 1991-09-18 1991-09-18 Dynamic pressure bearing for X-ray tube

Country Status (1)

Country Link
JP (1) JPH0527951U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0810359A (en) * 1994-07-01 1996-01-16 Mizuno Corp Iron club head

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04363844A (en) * 1990-10-19 1992-12-16 Toshiba Corp Rotary anode type x-ray tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04363844A (en) * 1990-10-19 1992-12-16 Toshiba Corp Rotary anode type x-ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0810359A (en) * 1994-07-01 1996-01-16 Mizuno Corp Iron club head

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