US3819968A - Rotary anode for x-ray tubes - Google Patents

Rotary anode for x-ray tubes Download PDF

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Publication number
US3819968A
US3819968A US00360408A US36040873A US3819968A US 3819968 A US3819968 A US 3819968A US 00360408 A US00360408 A US 00360408A US 36040873 A US36040873 A US 36040873A US 3819968 A US3819968 A US 3819968A
Authority
US
United States
Prior art keywords
tube
casing
axle
rotor
rotary
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.)
Expired - Lifetime
Application number
US00360408A
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English (en)
Inventor
K Haberrecker
S Gunther
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US3819968A publication Critical patent/US3819968A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01J35/1017—Bearings for rotating anodes
    • H01J35/1024—Rolling bearings
    • 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
    • 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
    • H01J2235/1093—Measures for preventing vibration

Definitions

  • a rotary anode for X-ray tubes wherein the rotary system consisting of the plate, rotor and bearings is [30] Foreign Application Priority Data June 2, 1972 connected by springs with the casing'of the tube.
  • Germany........v..v...,............ 2226714 invention is particularly characterized in that the plate and the rotor are mounted upon an axle to which a rotary ring of each f two bearings is connect-edwhile Fieid 313/60 the other rotary ring engages a tube provided wlth springs which provide a connection with the casing and have their own frequency which is substantially less than the driving frequency.
  • An object of the present invention is to improve existing constructions of this type.
  • the rotary system is separated from the casing and thus from the cathode with respect to transmission of mechanical vibrations in that the plate and the rotor are mounted upon an axle to which one of the two running rings of the bearings is connected, while the other ring engages a tube provided with springs which constitute a connection with the casing and which have own frequency which is considerably lower than the driving frequency.
  • separating resilient means can be used all elements which can prevent the transmission of vibrations. They can be, as already stated, any springs which are effective between the rotation system and the casing. In a simple but effective construction of the present invention sheet springs are used cut in the tube supporting the bearings. However, other spring devices can be also suitable which make use of the resilient action of spiral springs, etc.
  • the axis of the plate is a central shaft upon which sit the inner rotary rings of the two bearings, while outer rings engage a tube the outer side of which carries the springs.
  • a tube is attached to the casing which constitutes a plug socket into which the tube connected with the bearings is inserted and which is held primarily by the resulting pressure of the springs.
  • grooves, beads, etc. are provided for the springs.
  • the rotational system is manufactured separately from the rest of the tube and is inserted into the casing after the other tube parts are finished. In case of a separable casing the rotary system can easily exchanged at any time.
  • An equivalent solution is provided by providing the springs at the inner side of the outer casing.
  • FIG. 1 is a section through an X-ray tube of the present invention and specifically shows the arrangement of the resilient means at a tube interconnecting the bearings.
  • FIG. 2 is a partial section through a differently constructed upper bearing wherein the resilient means are arranged at a tube fixed to the casing.
  • the X-ray tube with rotary anode shown in FIG. 1 has a cylindrical casing l and a tube 2 fixed to a front surface of the casing and open to the interior.
  • This tube 2 carries the actual rotary system 3 which includes the two ball bearings 4 and 5. They hold the axle 6 in the middle of the tube 7.
  • This provides the connection of the rotary system 3 through the tube 2 with the casing 1.
  • the rotor 9 consists of copper; its interior is coated by a layer 10 which consists of iron and has a thickness of about 5 mm. The iron can be also applied in the form of a tube.
  • the upper free end of the rotor 9 carries the part 11 of the axle 6 upon which is located the actual rotary anode plate 12 consisting of tungsten.
  • the X-ray tube is operated in the known manner by actuating voltage applied between the line 13 and the tube 2.
  • actuating voltage applied between the line 13 and the tube 2.
  • a heating voltage of 20 v. between the line 13 and one of the two other lines 14 or 15 the plate 12 is struck by electrons, so that X-rays are produced which can be used in a known manner for making X-ray pictures, etc.
  • the plate 12 rotates since from the outside a stator of known design is applied to the casing 1 which produces a rotational moment in the rotor 9 by means of an alternating field. This causes the rotation of the axle 6 which rotates in bearings 4 and 5, the inner rotary rings 16 and 17 of which lie upon the axle 6.
  • the outer rotary rings 18 and 19 engage the tube 7.
  • This tube 7 consists of iron and in annular zones parallel to the bearings 4 and 5 has several outwardly bent tongue-like extensions. There are four of such tongues in each zone in this embodiment.
  • the drawing shows at the upper bearing two tongues 20 and 21 and at the lower bearing two tongues 22 and 23.
  • the insertion of the rotary system 3 is limited by inwardly extending collars 23' which form a snap-in groove for the springs 22, 23 and limit precisely the extent of the insertion.
  • the tongues 20 to 23 receive continuously resilient properties which produce a sufficiently firm hold to resist rotary frequencies developed in X-ray tubes and mechanical loads resulting from supports as well as movements.
  • FIG. 2 shows an outer tube 24 which corresponds to the tube 2 of FIG. 1 and which receives the springs.
  • FIG. 2 shows springs 26 and 27 provided close to the bearing 25 which corresponds to the bearing 4. These springs support the inner tube 28 corresponding to the tube 7.
  • the construction of FIG. 2 has a further series of springs corresponding to the springs 22 and 23 of FIG. 1, so as to provide a sufficiently stable hold.
  • Grooves 29 constitute the fixing means into which snap the springs 26, 27.
  • the axle 30 of the anode is separated from the casing by running rings.
  • FIG. 2 shows rings 32 and 32 othe upper bearing 25.
  • An X-ray tube with rotary anode comprising a casing, an anode plate within said casing, a rotor, an axle connected with said plate and said rotor, two spaced bearings, a tube enclosing a part of said axle, each of said bearings having an inner ring carried by said axle and an outer ring connected with said tube, and resilient means connecting said tube with said casing and having own frequency which is substantially lower than the driving frequency.
  • An X-ray tube with rotary anode comprising a tube carried by an end of said casing, the first-mentioned mentioned tube fitting into the second-mentioned tube, and wherein said axle is a central shaft and said resilient means are carried by an outer surface of the first-mentioned tube.
  • An X-ray tube with rotary anode comprising a casing, an anode plate with said casing, a rotor, an axle connected with said plate and said rotor, two spaced bearings, a tube enclosing a part of said axle, each of said bearings having an inner ring carried by said axle and an outer ring connected with said tube, another tube enclosing the first-mentioned tube, and resilient means connecting the second-mentioned tube with said casing and having own frequency which is substantially lower than the driving frequency.

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  • X-Ray Techniques (AREA)
US00360408A 1972-06-02 1973-05-15 Rotary anode for x-ray tubes Expired - Lifetime US3819968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2226714A DE2226714C3 (de) 1972-06-02 1972-06-02 Drehanoden-Anordnung einer Röntgenröhre mit in einem buchsenförmigen Rohr über radial wirkende Federn gelagerten Kugellagern

Publications (1)

Publication Number Publication Date
US3819968A true US3819968A (en) 1974-06-25

Family

ID=5846538

Family Applications (1)

Application Number Title Priority Date Filing Date
US00360408A Expired - Lifetime US3819968A (en) 1972-06-02 1973-05-15 Rotary anode for x-ray tubes

Country Status (6)

Country Link
US (1) US3819968A (enrdf_load_stackoverflow)
JP (1) JPS4957786A (enrdf_load_stackoverflow)
CH (1) CH549284A (enrdf_load_stackoverflow)
DE (1) DE2226714C3 (enrdf_load_stackoverflow)
FR (1) FR2186730B1 (enrdf_load_stackoverflow)
GB (1) GB1435606A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4635283A (en) * 1983-03-31 1987-01-06 Zvl Vyzkumny Ustav Pro Valiva Loziska Brno Mounting for the rotary anode of an x-ray tube
US4637040A (en) * 1983-07-28 1987-01-13 Elscint, Ltd. Plural source computerized tomography device with improved resolution
US4736400A (en) * 1986-01-09 1988-04-05 The Machlett Laboratories, Inc. Diffusion bonded x-ray target
WO2014140099A3 (en) * 2013-03-15 2014-10-30 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
CN105261543A (zh) * 2015-09-02 2016-01-20 北京艾立科技有限公司 一种单靶面多对焦点x射线球管
CN111033674A (zh) * 2017-08-31 2020-04-17 上海联影医疗科技有限公司 辐射发射装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3004706C2 (de) * 1980-02-08 1982-02-18 Siemens AG, 1000 Berlin und 8000 München Drehanoden-Röntgenröhre
DE19624919A1 (de) * 1996-06-21 1997-08-28 Siemens Ag Röntgenröhre

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1021511B (de) * 1954-10-12 1957-12-27 Gen Electric Roentgenroehre mit Drehanode
DE1059118B (de) * 1958-03-22 1959-06-11 Siemens Reiniger Werke Ag Drehanoden-Roentgenroehre
DE1525170A1 (de) * 1965-07-16 1969-08-14 Mueller C H F Gmbh Halterung fuer das dem freien Ende benachbarte Kugellager einer schnell umlaufenden,fliegend ausgebildeten Welle,insbesondere fuer eine Roentgenroehren-Drehanode

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4635283A (en) * 1983-03-31 1987-01-06 Zvl Vyzkumny Ustav Pro Valiva Loziska Brno Mounting for the rotary anode of an x-ray tube
US4637040A (en) * 1983-07-28 1987-01-13 Elscint, Ltd. Plural source computerized tomography device with improved resolution
US4736400A (en) * 1986-01-09 1988-04-05 The Machlett Laboratories, Inc. Diffusion bonded x-ray target
US10008357B2 (en) 2013-03-15 2018-06-26 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
US10096446B2 (en) 2013-03-15 2018-10-09 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
EP3109886A1 (en) * 2013-03-15 2016-12-28 Nikon Metrology NV Rotary target assembly and x-ray gun
CN106935462A (zh) * 2013-03-15 2017-07-07 尼康计量公众有限公司 x射线源、高电压发生器、电子束枪、旋转靶组件、旋转靶以及旋转真空密封件
US9941090B2 (en) 2013-03-15 2018-04-10 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, and rotary vacuum seal
US9947501B2 (en) 2013-03-15 2018-04-17 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
US9966217B2 (en) 2013-03-15 2018-05-08 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
WO2014140099A3 (en) * 2013-03-15 2014-10-30 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
US10020157B2 (en) 2013-03-15 2018-07-10 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
CN106935462B (zh) * 2013-03-15 2018-11-02 尼康计量公众有限公司 x射线源、高电压发生器、电子束枪、旋转靶组件、旋转靶以及旋转真空密封件
US10102997B2 (en) 2013-03-15 2018-10-16 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
CN105261543A (zh) * 2015-09-02 2016-01-20 北京艾立科技有限公司 一种单靶面多对焦点x射线球管
CN111033674A (zh) * 2017-08-31 2020-04-17 上海联影医疗科技有限公司 辐射发射装置
US10825637B2 (en) 2017-08-31 2020-11-03 Shanghai United Imaging Healthcare Co., Ltd. Radiation emission device
EP3659171A4 (en) * 2017-08-31 2020-12-16 Shanghai United Imaging Healthcare Co., Ltd. RADIATION EMISSION DEVICE
US11361930B2 (en) 2017-08-31 2022-06-14 Shanghai United Imaging Healthcare Co., Ltd. Radiation emission device
US12074006B2 (en) 2017-08-31 2024-08-27 Shanghai United Imaging Healthcare Co., Ltd. Radiation emission device

Also Published As

Publication number Publication date
DE2226714B2 (de) 1974-10-03
DE2226714A1 (de) 1973-12-13
FR2186730A1 (enrdf_load_stackoverflow) 1974-01-11
DE2226714C3 (de) 1975-06-05
GB1435606A (en) 1976-05-12
FR2186730B1 (enrdf_load_stackoverflow) 1978-02-10
JPS4957786A (enrdf_load_stackoverflow) 1974-06-05
CH549284A (de) 1974-05-15

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