公开(公告)号：US5224142A

公开(公告)日：1993-06-29

申请号：US766276

申请日：1991-09-27

申请人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami

发明人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami

IPC分类号： H01J35/10

CPC分类号： H01J35/101 ,  F16C33/109 ,  H01J2235/106

摘要： A rotary-anode X-ray tube having a rotor, a stationary shaft, and a sliding bearing connecting the rotor and the stationary shaft, forming a gap filled with liquid metal lubricant. The rotor has a first rotary member supporting an anode target and a second rotary member at which a sliding bearing is installed and which is coaxial with the first rotary member. The first and the second rotary members are connected at that end of the heat conductive path which is remote from the anode target. A heat insulating gap is formed at all fitting portions, but the remote end. Therefore, the temperature rise of the sliding bearing is controlled without using refregerant, and stable rotation of the bearing is secured.

公开(公告)号：US5210781A

公开(公告)日：1993-05-11

申请号：US767652

申请日：1991-09-30

申请人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami ,  Hiroaki Tazawa

发明人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami ,  Hiroaki Tazawa

IPC分类号： H01J35/10

CPC分类号： H01J35/101 ,  H01J2235/106

摘要： A rotary X-ray tube of the anode type wherein a jacket which serves to prevent lubricant from being scattered into the space in a vacuum envelope is attached to at least one of a rotary structure to which an anode target is fixed and a stationary structure for holding the rotating body, enclosing a clearance opening which forms a border relative to the space in the vacuum envelope.

公开(公告)号：US5189688A

公开(公告)日：1993-02-23

申请号：US766069

申请日：1991-09-27

申请人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami ,  Hiroaki Tazawa

发明人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami ,  Hiroaki Tazawa

IPC分类号： H01J35/10

CPC分类号： H01J35/101 ,  H01J2235/106 ,  H01J2235/1066

摘要： A rotary-anode type X-ray tube wherein bubbles produced in the gap of a sliding bearing are securely and easily replaced with liquid metal lubricant, and the metal lubricant is prevented from leaking. The rotary anode is secured to a cylindrical rotary structure. A columnar fixed structure is secured to the rotary structure forming a gap between the rotary structure and fixed structure. A liquid metal lubricant fills the gap. Spiral grooves are formed on a part of the outer surface of the fixed structure and the sliding bearing is installed between the fixed structure and the rotary structure. The rotary structure and fixed structure are housed in a vacuum envelope. The gap of the sliding bearing is connected to the space inside the vacuum envelope through an annular space. A gap is formed between a ring block for blocking the opening of the rotary structure and the fixed structure. A spiral groove to return the metal lubricant to the annular space is formed on the outer surface of the ring block facing the gap, and the annular space is coated with a film repelling the metal lubricant. The annular space and the gap between the ring block and the fixed structure serve to separate from the metal lubricant in the sliding bearing, the bubbles produced therein.

公开(公告)号：US5384818A

公开(公告)日：1995-01-24

申请号：US44174

申请日：1993-04-08

申请人： Katsuhiro Ono ,  Hidero Anno ,  Takayuki Kitami ,  Hiroyuki Sugiura ,  Makoto Tanaka

发明人： Katsuhiro Ono ,  Hidero Anno ,  Takayuki Kitami ,  Hiroyuki Sugiura ,  Makoto Tanaka

IPC分类号： H01J35/10

CPC分类号： H01J35/101 ,  H01J2235/106 ,  H01J2235/167

摘要： An X-ray tube of the rotary anode type includes a rotary structure to which an anode target is fixed, a stationary structure fitted into the rotating member, slide bearings arranged between them and provided with spiral grooves, and a lubricant consisting of gallium alloy and supplied to the slide bearings. The rotary structure includes a first rotating member to which the anode target is connected and a second rotating member provided with the bearings. These first and second rotating members are kept coaxial to each other and connected together at their those portions which are remote from the anode target when viewed in the rotating axis direction of the target and along a heat transmitting line extending from the target to the bearings, but heat insulating clearances and are formed between the rotating members at their other portions not connected. The first rotating member is made of one of those materials which have a heat conductivity smaller than 0.1 (cal/cm.sec..degree.C.) at temperature range of 0.degree. to 500.degree. C. The second rotating member is made of alloy whose main components are iron and nickel, alloy whose main components are iron, nickel and cobalt, alloy whose main components are iron and chromium, alloy whose main components are iron, chromium and nickel, or iron alloy including iron, chromium and one of carbon, molybdenum and tungsten.

摘要翻译： 旋转阳极型的X射线管包括固定有阳极靶的旋转结构体，嵌入旋转部件的固定结构体，配置在其间的滑动轴承，设有螺旋状的槽，以及由镓合金和 提供给滑动轴承。 旋转结构包括连接阳极靶的第一旋转构件和设置有轴承的第二旋转构件。 这些第一旋转构件和第二旋转构件保持彼此同轴并且在从目标的旋转轴线方向观察时沿着远离阳极靶的那些部分并且沿着从靶向轴承延伸的传热线连接在一起， 但是隔热间隙形成在旋转构件之间的未连接的其它部分。 第一旋转构件由0〜500℃的导热率小于0.1（cal / cm·sec·℃）的材料之一构成。第二旋转构件由合金制成 主要成分为铁和镍，主要成分为铁，镍，钴的合金，主要成分为铁和铬的合金，主要成分为铁，铬，镍的合金，或含铁，铬和碳之一的铁合金， 钼和钨。

公开(公告)号：US5204890A

公开(公告)日：1993-04-20

申请号：US767615

申请日：1991-09-30

申请人： Hidero Anno ,  Katsuhiro Ono ,  Hiroyuki Sugiura ,  Takayuki Kitami ,  Hideo Yagoshi ,  Murashi Shinto

发明人： Hidero Anno ,  Katsuhiro Ono ,  Hiroyuki Sugiura ,  Takayuki Kitami ,  Hideo Yagoshi ,  Murashi Shinto

IPC分类号： H01J35/10

CPC分类号： H01J35/101 ,  H01J2235/106 ,  H01J2235/1066

摘要： A rotary X-ray tube of the anode type wherein at least one of bearing surfaces which are partly formed on rotary and stationary structures is made of ceramics whose main component is the nitride, boride or carbide of at least one of those deviation metals, except chromium, which belong to a group IVA, VA or VIA element of a period 4, 5 or 6 of the Periodic Table.

公开(公告)号：US5195119A

公开(公告)日：1993-03-16

申请号：US766275

申请日：1991-09-27

申请人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami ,  Hiroaki Tazawa

发明人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami ,  Hiroaki Tazawa

IPC分类号： H01J35/10

CPC分类号： H01J35/101 ,  H01J2235/106 ,  H01J2235/1066

摘要： In a rotary-anode type X-ray tube, a rotary-anode is fixed to a cylindrical rotary structure, and a columnar stationary shaft is fitted in the rotary structure. A gap is formed between the rotary structure and the stationary shaft. The gap is filled with a liquid metal lubricant. Spiral grooves are formed in part of the outer surface of the stationary shaft to form a radial sliding bearing between the stationary shaft and the rotary structure. Spiral grooves are formed in the end faces of the stationary shaft to form a thrust sliding bearing between the stationary shaft and the rotary structure. A recess is formed in the stationary shaft to communicate with gaps in the radial sliding bearing. A lubricant storage chamber for storing the liquid metal lubricant is formed in the stationary shaft along the center axis. The storage chamber communicates with communicating holes which radially extend to be open to an outer surface region, of the stationary shaft, in which no spiral grooves are formed. With this structure, a sufficient amount of liquid metal lubricant required for a long-term operation of the sliding bearings can be stored in the X-ray tube, thereby maintaining a stable dynamic pressure type sliding bearing operation for a long period of time.

公开(公告)号：US5181235A

公开(公告)日：1993-01-19

申请号：US766126

申请日：1991-09-27

申请人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami

发明人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami

IPC分类号： F16C33/10 ,  H01J35/10

CPC分类号： H01J35/101 ,  F16C33/10 ,  H01J2235/106 ,  H01J2235/1066

摘要： In a rotary-anode type X-ray tube, a rotary anode is fixed to a cylindrical rotary structure, and a columnar stationary shaft is fit in the rotary structure. A gap is formed between the rotary structure and the stationary shaft, and the gap is filled with a liquid metal lubricant. Spiral grooves are formed in portions of the outer surface of the stationary shaft to form a sliding bearing between the stationary shaft and the rotary structure. Base members of molybdenum, tungsten, niobium, or tantalum, as surface portions, are formed on the inner surface of the rotary structure and the outer surface of the stationary shaft, and reaction layers containing the material for the base member and gallium are respectively formed on the surface portions to a thickness of 1 .mu.m or more.

公开(公告)号：US5298293A

公开(公告)日：1994-03-29

申请号：US799162

申请日：1991-11-27

申请人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami ,  Minoru Shida

发明人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami ,  Minoru Shida

IPC分类号： F16C33/10 ,  H01J35/10 ,  B05D3/12

CPC分类号： F16C33/107 ,  F16C17/107 ,  F16C33/103 ,  H01J35/101 ,  H01J2235/106

摘要： A method of manufacturing an X-ray tube comprises the steps of applying the bearing portions with liquid metal lubricant and heating the bearing portions defined by a rotary structure and a stationary shaft to a temperature of 200.degree. C. or more in a vacuum condition. An apparatus for manufacturing an X-ray tube comprises a vacuum bell jar having a heating unit, a metal lubricant injector provided in the vacuum bell jar and a holding and controlling device for holding the rotary structure and the stationary shaft and controlling the movement and the mutual connection of the rotary structure and stationary shaft externally of the vacuum envelope.

摘要翻译： 制造X射线管的方法包括以下步骤：在液体金属润滑剂中涂覆轴承部分，并在真空条件下将由旋转结构和固定轴限定的轴承部分加热到200℃或更高的温度。 一种用于制造X射线管的装置包括具有加热单元的真空钟罩，设置在真空钟罩中的金属润滑剂注入器，以及用于保持旋转结构和固定轴并控制运动的保持和控制装置， 真空外壳外部的旋转结构和固定轴的相互连接。

公开(公告)号：US5583907A

公开(公告)日：1996-12-10

申请号：US542949

申请日：1995-10-13

申请人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami

发明人： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami

IPC分类号： H01J9/14 ,  H01J35/10

CPC分类号： H01J35/101 ,  H01J2235/106 ,  H01J2235/1086

摘要： A rotary anode type X-ray tube comprises a thin gas passageway extending from a lubricant chamber formed along the axis of a stationary structure and open at a fine gap G effective for preventing a lubricant leakage. In manufacturing the tube, a liquid metal lubricant is supplied to the lubricant chamber and to a slide bearing section, followed by assembling the tube and, then, sealing the assembled tube in a vacuum vessel. In the subsequent exhausting step, an open end of the gas passageway is allowed to face upward. The particular exhausting operation permits completely releasing to the outside the gas impregnated in the bearing-constituting members and the liquid metal lubricant, making it possible to maintain a stable bearing function.

摘要翻译： 旋转阳极型X射线管包括从沿着固定结构的轴线形成的润滑剂室延伸的薄气体通道，并以有效防止润滑剂泄漏的微细间隙G开口。 在制造管时，将液态金属润滑剂供应到润滑剂室和滑动轴承部分，然后组装管，然后将组装的管密封在真空容器中。 在随后的排气步骤中，允许气体通道的开口端朝上。 具体的排气操作允许将浸渍在轴承构件和液态金属润滑剂中的气体完全释放到外部，使得可以保持稳定的轴承功能。

公开(公告)号：US5668849A

公开(公告)日：1997-09-16

申请号：US621705

申请日：1996-03-26

申请人： Hiroyuki Sugiura ,  Katsuhiro Ono ,  Hidero Anno

发明人： Hiroyuki Sugiura ,  Katsuhiro Ono ,  Hidero Anno

IPC分类号： F16C33/10 ,  H01J35/10

CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/107 ,  H01J35/101 ,  H01J2235/1026 ,  H01J2235/106

摘要： In a rotating anode X-ray tube of this invention, a liquid metal lubricant supplied to bearing portions between a rotary member and a stationary member for instructing rotation of the rotary member is to be filled to a volume having a range of lower limit being an amount to fill bearing gaps, including helical grooves, and as an upper limit being 70% of the capacity of the interior in which the lubricant can flow, measured from the end portion of a helical groove slide bearing portion closest to the interior of a vacuum container. In the rotating anode X-ray tube, leakage of the liquid metal lubricant can be prevented, and a stable bearing operation can be maintained.

摘要翻译： 在本发明的旋转阳极X射线管中，供给到旋转构件和静止构件之间的用于指示旋转构件的旋转的轴承部分的液体金属润滑剂将被填充到具有下限范围的体积 足以填充轴承间隙，包括螺旋槽，并且由最接近真空内部的螺旋槽滑动轴承部分的端部测量的上限是润滑剂可以流动的内部的容量的70％ 容器。 在旋转阳极X射线管中，能够防止液态金属润滑剂的泄漏，能够维持稳定的轴承运转。