CN107676594B - Precise turntable for X-ray CT detection equipment - Google Patents
Precise turntable for X-ray CT detection equipment Download PDFInfo
- Publication number
- CN107676594B CN107676594B CN201710994116.5A CN201710994116A CN107676594B CN 107676594 B CN107676594 B CN 107676594B CN 201710994116 A CN201710994116 A CN 201710994116A CN 107676594 B CN107676594 B CN 107676594B
- Authority
- CN
- China
- Prior art keywords
- ring
- base
- bearing
- shafting
- workbench
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 230000005855 radiation Effects 0.000 claims description 10
- 239000013307 optical fiber Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013170 computed tomography imaging Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/08—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a vertical axis, e.g. panoramic heads
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/2007—Undercarriages with or without wheels comprising means allowing pivoting adjustment
- F16M11/2014—Undercarriages with or without wheels comprising means allowing pivoting adjustment around a vertical axis
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/22—Undercarriages with or without wheels with approximately constant height, e.g. with constant length of column or of legs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The invention discloses a precise turntable for X-ray CT detection equipment, which comprises: the device comprises a base, a workbench arranged on the base, a support ring sleeved on the base, a jacking device connected to the side wall of the base, an adjusting foot margin arranged at the bottom of the base, and a thrust shafting, a centripetal shafting and a slip ring assembly arranged between the workbench and the base. The workbench and the base are both in steel plate welding structures, the inner ribs, the outer ribs and the surrounding rings are in the form of double-sandwich plates, and the weight of the whole machine can be effectively reduced on the premise of meeting the rigidity, so that the motion control response of the state is faster; the turntable shafting consists of the thrust shafting and the centripetal shafting, and adopts the dense ball bearing, so that the radial and axial runout and the angle shaking precision of the shafting can be ensured; the precise turntable is directly driven by the torque motor, has no intermediate transmission error, and is provided with the high-precision arc grating ruler as an angle feedback element, so that precise position control and speed control of the turntable are ensured.
Description
Technical Field
The invention relates to the field of rotary driving devices, in particular to a precise turntable for X-ray CT detection equipment.
Background
The optical radius of the large-view-field phase contrast CT imaging equipment exceeds 1 meter, the outer diameter size of a supporting turntable reaches 2 meters, and in order to reduce CT reconstructed image motion artifacts caused by mechanical vibration or motion errors as much as possible, the turntable system needs to have high rigidity and stability. In addition, shafting mechanical precision directly affects the most important index of the reconstructed image, namely spatial resolution.
The common rotary support mode of the large turntable has liquid and gas static pressure, but the problems of oil pollution, pressure pump, vibration, noise and the like are introduced, the large turntable is not suitable for medical CT occasions, the performance is greatly influenced by the environmental temperature, and the long-term reliability is poor.
The common large-diameter rolling bearing can only bear unidirectional load, and the shape error of a roller path is difficult to control in the processing process because the section moment of inertia of the body is relatively small and the structural rigidity is limited, so that the accuracy of a self-shafting cannot be ensured; the crossed roller bearing has been widely used in recent years, but the axial limit precision is not high although the bearing can bear the comprehensive radial and axial loads, and the radial and axial nominal runout tolerance is 8 μm by taking Japanese THK company ultra-precision crossed ball collar RE60040USP (outer diameter 700mm, inner diameter 600mm, width 40 mm) as an example. Therefore, a new shafting structure is needed to meet the high-resolution imaging requirement of phase contrast CT.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a precision turntable for an X-ray CT detection device aiming at the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: a precision turret for an X-ray CT detection device, comprising: the device comprises a base, a workbench arranged on the base, a support ring sleeved on the base, a jacking device connected to the side wall of the base, an adjusting foot margin arranged at the bottom of the base, and a thrust shafting, a centripetal shafting and a slip ring assembly arranged between the workbench and the base;
the centripetal shafting comprises a vertical shaft, a centripetal bearing arranged on the periphery of the vertical shaft, a bearing seat arranged on the periphery of the centripetal bearing, a shaft collar arranged on the upper part of the periphery of the bearing seat, a torque motor arranged on the lower part of the periphery of the bearing seat, a grating ruler seat arranged on the upper end of the vertical shaft and an arc grating ruler assembly arranged on the grating ruler seat.
Preferably, the workbench comprises a first bottom plate, a first inner ring, a first middle ring and a first outer ring which are sequentially arranged on the first bottom plate from inside to outside, a first inner rib which is arranged between the first inner ring and the first middle ring in a radiation state, a first outer rib which is arranged between the first middle ring and the first outer ring in a radiation state, and an upper panel which is arranged on the first outer ring.
Preferably, the base comprises a second bottom plate, a second inner ring, a second middle ring and a second outer ring which are sequentially arranged on the second bottom plate from inside to outside, a second inner rib which is arranged between the second inner ring and the second middle ring in a radiation state, a second outer rib which is arranged between the second middle ring and the second outer ring in a radiation state, and a wiring pipe which is arranged in the base in a penetrating manner.
Preferably, the first inner rib, the first outer rib, the second inner rib, the second outer rib, the first inner ring, the first middle ring, the first outer ring, the second inner ring, the second middle ring and the second outer ring are all double-sandwich plates, and each double-sandwich plate comprises two side plates, square steel pipes fixedly connected between the two side plates and a base plate connected to the bottoms of the two side plates.
Preferably, the thrust shafting is a dense ball bearing, and comprises an upper bearing ring attached to the lower surface of the workbench, a lower bearing ring attached to the upper surface of the base, and a first retainer and a first dense ball arranged between the upper bearing ring and the lower bearing ring.
Preferably, the supporting ring is sleeved on the periphery of the upper part of the base, and the upper surface of the supporting ring is attached to the bottom surface of the workbench; the jacking devices comprise a plurality of groups and are circumferentially distributed on the outer wall of the base.
Preferably, the slip ring assembly comprises a slip ring main body, a power brush, a signal brush and an optical fiber end, wherein the slip ring main body is fixed on the bottom surface of the workbench through screws so as to be matched with the outer cylindrical surface of the upper bearing ring; the power brush, the signal brush and the optical fiber end are fixed on the base.
Preferably, the radial bearing is a ball-in-ball bearing, and includes an outer bearing ring bonded to an inner periphery of the bearing housing, an inner bearing ring bonded to an outer periphery of the vertical shaft, and a second cage and a second closely-spaced ball provided between the outer bearing ring and the inner and outer bearing rings.
Preferably, the torque motor is split, the stator end of the torque motor is fixed on the base, and the rotor end of the torque motor is connected with the lower part of the periphery of the bearing seat.
Preferably, the outer periphery of the collar is fixedly connected with the inner wall of the first inner ring of the workbench, and the inner periphery of the collar is connected with the upper part of the outer periphery of the bearing seat.
The beneficial effects of the invention are as follows:
(1) The workbench and the base are both in steel plate welding structures, the inner ribs, the outer ribs and the surrounding rings are in the form of double-sandwich plates, and the energy efficiency is reduced on the premise of meeting the rigidity by the optimized design of the structure, so that the motion control response of the state is faster;
(2) The turntable shafting consists of the thrust shafting and the centripetal shafting, and adopts the dense ball bearing, so that the radial and axial runout and the angle shaking precision of the shafting can be ensured;
(3) The precise turntable is directly driven by the torque motor, has no intermediate transmission error, and is simultaneously provided with the high-precision arc grating ruler as an angle feedback element, so that the precise position control and the speed control of the turntable are ensured;
(4) The load of the precise turntable transmits power, control and image data through the slip ring component, square steel pipes are arranged in the base, strong and weak currents are separated, wiring is safe, reasonable and hidden, and the structure is compact.
Drawings
FIG. 1 is a cross-sectional view of a precision turret for an X-ray CT detection apparatus of the present invention;
FIG. 2 is a schematic view of a workbench according to the invention;
FIG. 3 is a schematic structural view of a double sandwich plate according to the invention;
FIG. 4 is an enlarged schematic view of FIG. 1A in accordance with the present invention;
FIG. 5 is an enlarged schematic view of the present invention at B in FIG. 1;
FIG. 6 is a schematic view of the structure of the base of the present invention;
fig. 7 is a schematic structural view of the support ring of the present invention.
Reference numerals illustrate:
10-a workbench; 11-an upper panel; 12-a first inner ring; 13-a first middle ring; 14-a first outer ring; 15-a first external rib; 16-a first inner rib; 17-a first bottom plate; 20-thrust shafting; 21-an upper bearing ring; 22-a first holder; 23-first closely spaced balls; 24-lower bearing ring; 30-a support ring; 40-a base; 41-a second inner ring; 42-a second middle ring; 43-a second outer ring; 44-a second outer rib; 45-second inner ribs; 46-wiring pipe; 47-a second bottom plate; 50-centripetal shafting; 51—a torque motor; 52-vertical axis; 53-radial bearing; 54-bearing seat; 55-collar; 56-arc grating ruler component; 57-grating ruler holder; 60-adjusting the ground feet; 70-jacking device; 80-a slip ring assembly; 90-double sandwich panel; 91-side plates; 92-square steel pipe; 93-backing plate; 510—a stator end; 511-rotor end; 531-an outer bearing ring; 532—a second cage; 533-second closely spaced balls; 534-inner bearing ring.
Detailed Description
The present invention is described in further detail below with reference to examples to enable those skilled in the art to practice the same by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 7, a precision turret for an X-ray CT detection apparatus of the present embodiment includes: the device comprises a base 40, a workbench 10 arranged on the base 40, a support ring 30 sleeved on the base 40, a jacking device 70 connected to the side wall of the base 40, an adjusting foot 60 arranged at the bottom of the base 40, a thrust shafting 20, a centripetal shafting 50 and a slip ring assembly 80 arranged between the workbench 10 and the base 40.
The workbench 10 comprises a first bottom plate 17, a first inner ring 12, a first middle ring 13 and a first outer ring 14 which are sequentially arranged on the first bottom plate 17 from inside to outside, a first inner rib 16 which is arranged between the first inner ring 12 and the first middle ring 13 in a radiation state, a first outer rib 15 which is arranged between the first middle ring 13 and the first outer ring 14 in a radiation state, and an upper panel 11 which is arranged on the first outer ring 14. The base 40 includes a second bottom plate 47, a second inner ring 41, a second middle ring 42 and a second outer ring 43 sequentially disposed on the second bottom plate 47 from inside to outside, a second inner rib 45 disposed between the second inner ring 41 and the second middle ring 42 in a radial state, a second outer rib 44 disposed between the second middle ring 42 and the second outer ring 43 in a radial state, and a wiring tube 46 penetrating and disposed in the base 40. The wiring duct 46 is used to arrange motor power lines, control lines and cooling lines inside the turntable. The first inner rib 16, the first outer rib 15, the second inner rib 45, the second outer rib 44, the first inner ring 12, the first middle ring 13, the first outer ring 14, the second inner ring 41, the second middle ring 42 and the second outer ring 43 are all double-sandwich plates 90, and the double-sandwich plates 90 comprise two side plates 91, square steel pipes 92 welded between the two side plates 91 and backing plates 93 connected to the bottoms of the two side plates 91. The workbench 10 and the base 40 are both of steel plate welding structures, the inner ribs, the outer ribs and the surrounding rings are in the form of double-sandwich plates 90, and the energy efficiency is reduced on the premise of meeting the rigidity through the optimized design of the structure, so that the motion control response of the state is faster.
The work table 10 and the base 40 adopting the above-described structure have high mechanical strength and are light in weight, and simple to manufacture and install.
Fig. 4 shows an enlarged schematic view of the thrust shafting 20 at the a position in fig. 1. The thrust shaft system 20 is a ball-and-socket bearing, and includes an upper bearing ring 21 bonded to the lower surface of the table 10, a lower bearing ring 24 bonded to the upper surface of the base 40, and a first cage 22 and a first closely-spaced ball 23 provided between the upper bearing ring 21 and the lower bearing ring 24. The contact surface of the bearing ring and the first closely-arranged balls 23 is a plane, and the number of the balls is calculated by a Hertz contact stress formula. After the matching surfaces of the upper bearing ring 21 and the workbench 10 are scraped to reach proper contact rigidity, the matching surfaces are fastened and combined by screws, and then the working plane of the bearing ring 21 is ground and polished, so that extremely high flatness is easy to obtain. The same is true of the process sequence of the lower bearing ring 24 and the base 40.
Compared with a general rolling bearing, the dense ball bearing is characterized in that: (1) The local error of each element in the bearing has less influence on the accuracy of the bearing system under the effect of dense bead average effect; (2) Certain interference is reserved when the inner ring and the outer ring of the dense ball bearing are designed, and the rotation precision and the rigidity of the main shaft can be improved.
The support ring 30 is sleeved on the periphery of the upper part of the base 40, the upper surface of the support ring 30 is attached to the bottom surface of the workbench 10, and the support ring 30 is formed by welding a plurality of annular steel plates and rib plates; the jacking devices 70 include a plurality of sets circumferentially distributed on the outer wall of the base 40. In order to avoid damage to the thrust shafting 20 caused by vibration in the process of carrying and transporting, the supporting ring 30 is jacked by a plurality of groups of jacking devices 70 distributed circumferentially so as to support the workbench 10, and the upper bearing ring 21 is separated from the first closely arranged balls 23 by a small gap, so that key parts of the shafting are protected, and when the turntable works normally, the supporting ring 30 falls down, and a dustproof effect can be achieved by filling a sealing felt at the upper end of the supporting ring 30.
Fig. 5 shows an enlarged schematic view of the centripetal axis 50 at the B site in fig. 1. The radial shaft system 50 includes a vertical shaft 52, a radial bearing 53 provided on the outer periphery of the vertical shaft 52, a bearing housing 54 provided on the outer periphery of the radial bearing 53, a collar 55 provided on the upper portion of the outer periphery of the bearing housing 54, a torque motor 51 provided on the lower portion of the outer periphery of the bearing housing 54, a grating ruler holder 57 provided on the upper end of the vertical shaft 52, and a circular arc grating ruler assembly 56 provided on the grating ruler holder 57. The shafting components are coaxially matched and connected through flange distribution screws. The radial bearing 53 is a ball-and-socket bearing, and includes an outer bearing ring 531 fitted to the inner periphery of the bearing housing 54, an inner bearing ring 534 fitted to the outer periphery of the vertical shaft 52, and a second cage 532 and a second closely-spaced ball 533 provided between the outer bearing ring 531 and the inner and outer bearing rings 531. The contact surfaces of the outer bearing ring 531, the inner bearing ring 531 and the second closely-arranged balls 533 are cylindrical surfaces, and in order to eliminate radial gaps, an interference of 5-10 μm is reserved between the inner bearing ring and the closely-arranged balls. The precise turntable is directly driven by the torque motor 51, no intermediate transmission error exists, and meanwhile, a high-precision arc grating ruler is configured as an angle feedback element, so that precise position control and speed control of the turntable are ensured.
The torque motor 51 is of a split type, and a stator end 510 thereof is fixed to the base 40, and a rotor end 511 thereof is connected to a lower peripheral portion of the bearing housing 54. The vertical shaft 52 is flanged to the base 40. The outer circumference of the collar 55 is fixedly connected with the inner wall of the first inner ring 12 of the workbench 10, and can be fixedly connected by adopting a welding mode, and the inner circumference of the collar 55 is connected and matched with the upper part of the outer circumference of the bearing seat 54.
The slip ring assembly 80 includes a slip ring body, a power brush, a signal brush and an optical fiber end, and the slip ring body is fixed on the bottom surface of the workbench 10 by screws to be matched with the outer cylindrical surface of the upper bearing ring 21; the power brush, signal brush and fiber ends are secured to the base 40. The electrical load module of the precision turret of the present invention transmits power, control and image data through the slip ring assembly 80.
The turntable shafting consists of a thrust shafting 20 and a centripetal shafting 50, and dense ball bearings are adopted, so that radial runout, axial runout and angular shaking precision of the shafting can be ensured.
The working principle of the precision turntable of the invention is as follows: the torque motor 51 transmits torque to the workbench 10 through the bearing seat 54 to drive the workbench to rotate, the axial and radial runout and the shaking angle error of the turntable are controlled by the processing and assembly precision of the thrust shafting 20 and the centripetal shafting 50, and the rotational angle positioning precision and the rotational speed precision of the turntable are fed back by the circular arc grating ruler assembly 56.
Although embodiments of the present invention have been disclosed above, it is not limited to the use of the description and embodiments, it is well suited to various fields of use for the invention, and further modifications may be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the particular details without departing from the general concepts defined in the claims and the equivalents thereof.
Claims (1)
1. A precision turret for an X-ray CT detection apparatus, comprising: the device comprises a base, a workbench arranged on the base, a support ring sleeved on the base, a jacking device connected to the side wall of the base, an adjusting foot margin arranged at the bottom of the base, and a thrust shafting, a centripetal shafting and a slip ring assembly arranged between the workbench and the base;
the centripetal shafting comprises a vertical shaft, a centripetal bearing arranged on the periphery of the vertical shaft, a bearing seat arranged on the periphery of the centripetal bearing, a shaft collar arranged on the upper part of the periphery of the bearing seat, a torque motor arranged on the lower part of the periphery of the bearing seat, a grating ruler seat arranged on the upper end of the vertical shaft and an arc grating ruler assembly arranged on the grating ruler seat;
the workbench comprises a first bottom plate, a first inner ring, a first middle ring and a first outer ring which are sequentially arranged on the first bottom plate from inside to outside, a first inner rib arranged between the first inner ring and the first middle ring in a radiation state, a first outer rib arranged between the first middle ring and the first outer ring in a radiation state and an upper panel arranged on the first outer ring;
the base comprises a second bottom plate, a second inner ring, a second middle ring and a second outer ring which are sequentially arranged on the second bottom plate from inside to outside, second inner ribs which are arranged between the second inner ring and the second middle ring in a radiation state, second outer ribs which are arranged between the second middle ring and the second outer ring in a radiation state, and wiring pipes which are arranged in the base in a penetrating manner;
the first inner rib, the first outer rib, the second inner rib, the second outer rib, the first inner ring, the first middle ring, the first outer ring, the second inner ring, the second middle ring and the second outer ring are all double-sandwich plates, and each double-sandwich plate comprises two side plates, a square steel pipe fixedly connected between the two side plates and a base plate connected to the bottoms of the two side plates;
the thrust shafting is a dense ball bearing and comprises an upper bearing ring attached to the lower surface of the workbench, a lower bearing ring attached to the upper surface of the base, a first retainer and a first dense ball, wherein the first retainer and the first dense ball are arranged between the upper bearing ring and the lower bearing ring;
the support ring is sleeved on the periphery of the upper part of the base, and the upper surface of the support ring is attached to the bottom surface of the workbench; the jacking devices comprise a plurality of groups and are circumferentially distributed on the outer wall of the base;
the slip ring assembly comprises a slip ring main body, a power brush, a signal brush and an optical fiber end, wherein the slip ring main body is fixed on the bottom surface of the workbench through screws so as to be matched with the outer cylindrical surface of the upper bearing ring; the power brush, the signal brush and the optical fiber end are fixed on the base;
the radial bearing is a dense ball bearing and comprises an outer bearing ring attached to the inner periphery of the bearing seat, an inner bearing ring attached to the outer periphery of the vertical shaft, and a second retainer and a second dense ball arranged between the outer bearing ring and the inner bearing ring;
the torque motor is split, the stator end of the torque motor is fixed on the base, and the rotor end of the torque motor is connected with the lower part of the periphery of the bearing seat;
the periphery of the collar is fixedly connected with the inner wall of the first inner ring of the workbench, and the inner periphery of the collar is connected with the upper part of the periphery of the bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710994116.5A CN107676594B (en) | 2017-10-23 | 2017-10-23 | Precise turntable for X-ray CT detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710994116.5A CN107676594B (en) | 2017-10-23 | 2017-10-23 | Precise turntable for X-ray CT detection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107676594A CN107676594A (en) | 2018-02-09 |
| CN107676594B true CN107676594B (en) | 2024-01-30 |
Family
ID=61140949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710994116.5A Active CN107676594B (en) | 2017-10-23 | 2017-10-23 | Precise turntable for X-ray CT detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676594B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972605B (en) * | 2017-11-21 | 2021-01-08 | 上海航天测控通信研究所 | High-precision vehicle-mounted rotary table |
| CN109282118B (en) * | 2018-11-09 | 2020-04-10 | 中国科学院长春光学精密机械与物理研究所 | Precision rotary table shaft system |
| CN110044238B (en) * | 2019-05-23 | 2023-12-01 | 洛阳普瑞森精密轴承有限公司 | Cross roller bearing play measuring instrument |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005147379A (en) * | 2003-11-20 | 2005-06-09 | Okamoto Machine Tool Works Ltd | Air spindle |
| CN101832333A (en) * | 2010-04-06 | 2010-09-15 | 哈尔滨量具刃具集团有限责任公司 | Anti-impact dense ball static pressure proportion control mixing bearing |
| CN102434578A (en) * | 2011-09-15 | 2012-05-02 | 中国科学院长春光学精密机械与物理研究所 | Double-row arc raceway reducing ball bearing for small and medium-sized precise turntables |
| CN103267510A (en) * | 2013-05-31 | 2013-08-28 | 中国科学院长春光学精密机械与物理研究所 | Electric jacking device for photoelectric theodolite |
| CN104570316A (en) * | 2014-12-30 | 2015-04-29 | 中国科学院长春光学精密机械与物理研究所 | Automatic three-lens switchover mechanism for vehicle-mounted self-adapting optical imaging telescope |
| CN205302012U (en) * | 2015-12-15 | 2016-06-08 | 中国科学院西安光学精密机械研究所 | Precise five-dimensional turntable |
| CN207455099U (en) * | 2017-10-23 | 2018-06-05 | 中国科学院苏州生物医学工程技术研究所 | For the precise rotating platform of X ray CT detection device |
-
2017
- 2017-10-23 CN CN201710994116.5A patent/CN107676594B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005147379A (en) * | 2003-11-20 | 2005-06-09 | Okamoto Machine Tool Works Ltd | Air spindle |
| CN101832333A (en) * | 2010-04-06 | 2010-09-15 | 哈尔滨量具刃具集团有限责任公司 | Anti-impact dense ball static pressure proportion control mixing bearing |
| CN102434578A (en) * | 2011-09-15 | 2012-05-02 | 中国科学院长春光学精密机械与物理研究所 | Double-row arc raceway reducing ball bearing for small and medium-sized precise turntables |
| CN103267510A (en) * | 2013-05-31 | 2013-08-28 | 中国科学院长春光学精密机械与物理研究所 | Electric jacking device for photoelectric theodolite |
| CN104570316A (en) * | 2014-12-30 | 2015-04-29 | 中国科学院长春光学精密机械与物理研究所 | Automatic three-lens switchover mechanism for vehicle-mounted self-adapting optical imaging telescope |
| CN205302012U (en) * | 2015-12-15 | 2016-06-08 | 中国科学院西安光学精密机械研究所 | Precise five-dimensional turntable |
| CN207455099U (en) * | 2017-10-23 | 2018-06-05 | 中国科学院苏州生物医学工程技术研究所 | For the precise rotating platform of X ray CT detection device |
Non-Patent Citations (1)
| Title |
|---|
| 田学光."测绘相机标定转台结构***关键技术研究".博士电子期刊.(2010年第10期),第18-19页，第24页-26页、第33页-35页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107676594A (en) | 2018-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107676594B (en) | Precise turntable for X-ray CT detection equipment | |
| CN102416566B (en) | Static pressure air suspension direct drive turntable | |
| CN109211054B (en) | Detection table suitable for automatic precision assembly of ultra-large slewing bearing | |
| CN103594406A (en) | Self-centering positioning chuck and centering positioning method of semiconductor wafer | |
| CN109551259B (en) | Direct-drive rotary table system based on hydrostatic composite bearing | |
| CN106092026B (en) | A kind of wheel hub axial direction clearance detector | |
| US11364627B2 (en) | Joint support structure of a robot and a robot having the same | |
| JP5469948B2 (en) | Test equipment for slewing ring bearings | |
| CN101852590B (en) | Tubular column type instrument board framework visual detection positioning device of automobile | |
| JPH0545802B2 (en) | ||
| EP3225168B1 (en) | Gantry system with support wheels | |
| CN104215441B (en) | A kind of vertical rotor dynamic radial load maintainer and stability test scheme | |
| CN207487688U (en) | A kind of certainly used group twin shaft indexing mechanism of aircraft three | |
| CN207455099U (en) | For the precise rotating platform of X ray CT detection device | |
| CN109833982B (en) | Geotechnical drum type centrifuge device | |
| CN211540557U (en) | Novel high-precision roller grinder guide roller main shaft system | |
| CN102853802B (en) | Mechanical device for measuring rotation angle of rotating ring | |
| CN112555273A (en) | Magnetic suspension and elastic foil gas mixing bearing experiment platform | |
| CN109282118B (en) | Precision rotary table shaft system | |
| CN110068459B (en) | Barrel-shaped disc-shaped supporting system | |
| CN107972605A (en) | A kind of high accuracy vehicle-mounted rotating table | |
| CN101631961B (en) | Electric direct drive device, particularly for a turntable | |
| CN111300452B (en) | Welding seam measuring-polishing robot in conical shell | |
| CN112460417A (en) | Single-shaft rotary table with high precision and high resolution | |
| CN212020657U (en) | High-precision experiment rotary table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |