-
公开(公告)号：US5696804A
公开(公告)日：1997-12-09
申请号：US790792
申请日：1997-01-30
申请人： Katsuhiro Ono , Koichi Kitade , Hidero Anno , Takayuki Kitami
发明人： Katsuhiro Ono , Koichi Kitade , Hidero Anno , Takayuki Kitami
摘要： In an X-ray tomographic apparatus, while rotating a gantry rotary section around a region where an object to be photographed is placed, the anode target of an X-ray tube is rotated at a predetermined high rotation rate and X-rays are emitted from the anode target. In emitting the X-rays, the rotation torque is increased to be larger than that prior to rotation of the gantry rotary section in accordance with the rotation drive power supplied to a stator coil. A decrease in rotation rate of the anode target of the X-ray tube can be prevented even during rotation of the gantry rotary section, radiation at a necessary and sufficient X-ray dose can be assured, and an X-ray tomographic image can be properly obtained.
摘要翻译： 在X射线断层摄影装置中，在将台架旋转部围绕拍摄对象的区域周围旋转的同时，使X射线管的阳极靶以预定的高旋转速度旋转，并且从 阳极靶。 在发射X射线时，根据提供给定子线圈的旋转驱动功率，旋转扭矩增加到大于台架旋转部分旋转之前的旋转扭矩。 即使在台架旋转部的旋转期间也能够防止X射线管的阳极靶的旋转速度的降低，可以确保必要且充分的X射线剂量的放射线，并且可以使X射线断层图像 正确获得。
-
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
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：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.
-
4.发明授权Rotary anode type X-ray tube having a jacket to prevent lubricant from being scattered 失效旋转阳极类型X射线管有一个夹克防止润滑剂从散射
公开(公告)号：US5210781A
公开(公告)日：1993-05-11
申请号：US767652
申请日：1991-09-30
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
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
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
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：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
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。
-
-
-
-
-
-
-
-
-
搜索结果
61 条记录 (耗时 0.043 秒)
