CN112162377A - Cubic prism every single move rotating device - Google Patents
Cubic prism every single move rotating device Download PDFInfo
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- CN112162377A CN112162377A CN202011055642.3A CN202011055642A CN112162377A CN 112162377 A CN112162377 A CN 112162377A CN 202011055642 A CN202011055642 A CN 202011055642A CN 112162377 A CN112162377 A CN 112162377A
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- 230000005540 biological transmission Effects 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 4
- 238000003384 imaging method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
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Abstract
The invention belongs to the technical field of optical machine imaging, and discloses a device for realizing the rotation of a cubic prism along a pitching direction, which is mainly applied to photoelectric sighting and imaging systems of aviation, military industry and the like. The traditional device for realizing the rotation of the cubic prism along the pitching direction is that the cubic prism is arranged on a cubic prism seat (called as a cubic prism component) and then the cubic prism component is assembled on a pitching rotation mechanism; the traditional scheme has the defects that the coaxiality error of shafts on two sides of a cubic prism component is large, so that the rotation stability is poor, and the angle measurement precision is low. The invention breaks through the traditional method, comprehensively considers the fixation and rotation of the cubic prism, and integrally uses the cubic prism as an assembly part to realize the rotation of the cubic prism along the pitching direction; the invention improves the coaxiality of the rotating shafts on the two sides of the cubic prism and has the advantages of compact structure, stable rotation, high rotation precision and the like.
Description
Technical Field
The invention belongs to the technical field of optical machine imaging, and relates to a device for realizing rotation of a cubic prism in a limited angle range along a pitching direction.
Background
The cubic prism is one of reflecting prisms, and is an optical total reflection prism for realizing 90-degree deflection of an optical path, as shown in fig. 1. The rotation of the cubic prism along the pitching direction is realized, and the rotation comprises two layers: firstly, fixing the cubic prism; secondly, the rotation of the cubic prism along the pitching direction is realized. In the prior art, a cubic prism is generally installed on a cubic prism seat and fixed by a pressing plate, which is called a cubic prism component; then the cubic prism part is arranged on the pitching rotation mechanism to realize the rotation of the cubic prism along the pitching direction.
Fig. 2 and 3 are a device for realizing the rotation of the cubic prism in the pitch direction.
FIG. 2 is a cubic prism assembly, wherein a cubic prism 01 is mounted on a cubic prism base 02, the incident surface and the exit surface of the cubic prism are respectively pressed by 4 pressing plates 05 on the two sides of the cubic prism and the cubic prism base and fastened by screws 06, and a left shaft 03 and a right shaft 04 are matched with the shaft holes of the cubic prism and fixed on the cubic prism base by screws 07 to form a rotating shaft of the cubic prism.
Fig. 3 shows a cubic prism pitch rotation mechanism, in order to install a cubic prism part 001 on a pitch support, the pitch support needs to be divided into two parts, namely a support 002 and a support 003, the support 002 and the support 003 are assembled together after the installation of the cubic prism part is completed, and the support is provided with an absolute value encoder 007 for measuring a pitch rotation angle of a cubic prism. During specific assembly, the two bearings 004 are respectively installed on the support 002 and the bracket component 003, then the left shaft and the right shaft of the cubic prism component 001 are respectively installed on the bearing inner rings of the support 002 and the bracket 003, and the absolute value encoder rotor in the bracket component is connected with the left shaft of the cubic prism component through a key 005. The bracket component 003 is fixed on the support 002 by a pair of screws 006, the right shaft of the cubic prism component is used for power input, and the motor drives the cubic prism component 001 to rotate in the limited rotation angle range along the pitching direction through the speed reducing mechanism.
The device is characterized in that the cubic prism is firstly arranged on the cubic prism seat and then assembled on the pitching rotating mechanism. The method has the advantages that the assembly is convenient, but because the shafts on the two sides of the cubic prism component 1 are respectively arranged on two parts, the processing error and the assembly error of a support and a bracket component exist, the coaxiality error of the shafts on the two sides of the cubic prism after the assembly is finished is larger, the parallelism error of the axis of the cubic prism relative to the bottom surface of the support 002 is larger, and the rotation stability of the cubic prism is greatly influenced.
Disclosure of Invention
Objects of the invention
The invention provides a pitching rotating device for a cubic prism, which aims to ensure that the cubic prism is fixed reliably and is convenient to install, the coaxiality of rotating shafts on two sides of the cubic prism is high, and the cubic prism can rotate stably.
(II) technical scheme
In order to solve the technical problem, the invention provides a cubic prism pitching rotation device, which comprises a cubic prism 1, a cubic prism seat 2, a pitching support 3, a left shaft 4, a right shaft 5, a pair of angular contact ball bearings, a pressure plate 18, an absolute value encoder 8 and a sleeve 9; the cubic prism seat 2 is placed in the pitching support 3, the left shaft 4 and the right shaft 5 respectively penetrate through corresponding mounting holes at two sides of the cubic prism seat 2 and the pitching support 3, a pair of angular contact ball bearings are mounted back to back, the left shaft 4 and the right shaft 5 are fixed on the cubic prism seat 2, and the left shaft 4 and the right shaft 5 are used as pitching shafts, so that the cubic prism seat 2 can stably rotate along the pitching shafts; then, the stator of the absolute value encoder 8 is connected with the left side of the pitching support 3, and the rotor of the absolute value encoder 8 is connected with the left shaft 4 through a sleeve 9; and finally, the cubic prism 1 is arranged in the cubic prism seat 2, so that the cubic prism 1 can stably rotate along the pitching direction.
The pair of angular ball bearings includes a left angular ball bearing 6a and a right angular ball bearing 6b, the left angular ball bearing 6a is mounted on the left shaft 4, and the right angular ball bearing 6b is mounted on the right shaft 5. The tail end of the left shaft 4 is connected and installed with a left pressing ring 14 through threads, the tail end of the right shaft 5 is connected and installed with a right pressing ring 17 through threads, and the left angular contact ball bearing 6a and the right angular contact ball bearing 6b are pre-tightened through the left pressing ring 14 and the right pressing ring 17 respectively.
Wherein, one side of the cubic prism seat 2 is provided with an opening, after the cubic prism 1 is arranged in the cubic prism seat 2, a pressing plate 18 is arranged at the opening, the pressing plate 18 is fixed on the cubic prism seat 2, and the cubic prism 1 is fastened through the pressing plate 18.
Four of the pressing plates 18 are fixed on four planes of the open end of the cubic prism seat 2.
The left shaft 4, the right shaft 5 and the cubic prism seat 2 are connected by adopting inner hexagonal countersunk head screws.
Wherein the cubic prism seat 2 is arranged in the inner cavity of the pitching support 3.
Wherein the sleeve 9 is mounted on the rotor of the absolute value encoder 8 and fixed by the second screw 11, and the stator of the absolute value encoder 8 is mounted on the pitch bearing 3 and fixed by the third screw 12.
The sleeve 9 is arranged on the left shaft 4, connected by a first key 13, and pre-tightened by a left pressing ring 14 on the inner ring of the left angular contact ball bearing 6a, the right shaft 5 is a power input shaft, connected with an input power transmission mechanism by a second key 15, and pre-tightened by a right pressing ring 17 on the inner ring of the right angular contact ball bearing 6 b.
Wherein, the gasket 10 is additionally arranged on the right contact surfaces of the cubic prism 1 and the cubic prism seat 2, and 3M 3 set screws are used for pressing from the right side surface of the cubic prism seat 2 to prevent the cubic prism 1 from loosening axially.
Wherein, the right shaft 5 is input into a power transmission mechanism through a second key 15, and gear transmission, worm and gear transmission or steel belt transmission is selected.
(III) advantageous effects
The cubic prism pitching rotation device provided by the invention breaks through the traditional method, comprehensively considers the fixation and rotation of the cubic prism, and integrally uses the cubic prism as an assembly part to realize the rotation of the cubic prism along the pitching direction; the coaxiality of the rotating shafts on the two sides of the cubic prism can be fully ensured, and the device has the advantages of compact structure, stable rotation, high rotation precision and the like.
Drawings
FIG. 1 is a diagram of a cube prism construction.
Fig. 2 shows a prior art cube prism fixing member.
Fig. 3 shows a device for realizing the rotation of the cubic prism in the pitch direction in the prior art.
Fig. 4 is a cubic prism pitch rotation device proposed by the present invention.
In FIG. 4, 1-cube prism; 2-cubic prism seat; 3-pitching support; 4-left axis; 5-right axis; 6 a-left angular contact ball bearing; 6 b-right angular contact ball bearing; 7-a first screw; 8-absolute value encoder; 9-a sleeve; 10-a gasket; 11-a second screw; 12-a third screw; 13-a first bond; 14-left clamping ring; 15-a second bond; 16-a power transmission connection; 17-right clamping ring; 18-a platen; 19-fourth screw.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
Referring to fig. 4, the cubic prism pitch rotation device of the present embodiment includes a cubic prism 1, a cubic prism holder 2, a pitch support 3, a left shaft 4, a right shaft 5, a pair of angular contact ball bearings, a pressure plate 18, an absolute value encoder 8, and a sleeve 9; the cubic prism seat 2 is placed in the pitching support 3, the left shaft 4 and the right shaft 5 respectively penetrate through corresponding mounting holes at two sides of the cubic prism seat 2 and the pitching support 3, a pair of angular contact ball bearings are mounted back to back, the left shaft 4 and the right shaft 5 are fixed on the cubic prism seat 2, and the left shaft 4 and the right shaft 5 are used as pitching shafts, so that the cubic prism seat 2 can stably rotate along the pitching shafts; then, the stator of the absolute value encoder 8 is connected with the left side of the pitching support 3, and the rotor of the absolute value encoder 8 is connected with the left shaft 4 through a sleeve 9; and finally, the cubic prism 1 is arranged in the cubic prism seat 2, so that the cubic prism 1 can stably rotate along the pitching direction.
The pair of angular ball bearings includes a left angular ball bearing 6a and a right angular ball bearing 6b, the left angular ball bearing 6a being mounted on the left shaft 4, and the right angular ball bearing 6b being mounted on the right shaft 5. The tail end of the left shaft 4 is connected and installed with a left pressing ring 14 through threads, the tail end of the right shaft 5 is connected and installed with a right pressing ring 17 through threads, and the left angular contact ball bearing 6a and the right angular contact ball bearing 6b are pre-tightened through the left pressing ring 14 and the right pressing ring 17 respectively.
The open end of the cubic prism seat 2 is provided, after the cubic prism 1 is arranged in the cubic prism seat 2, the open end is provided with a pressing plate 18, the pressing plate 18 is fixed on the cubic prism seat 2, and the cubic prism 1 is fastened through the pressing plate 18. Four pressing plates 18 are respectively arranged on four planes at the opening end of the cubic prism base 2 and are fixed by fourth screws 19.
The left shaft 4, the right shaft 5 and the cubic prism seat 2 are connected by adopting inner hexagonal countersunk head screws, so that an inner hexagonal wrench can be conveniently fastened from the side surface of the cubic prism seat 2.
In the embodiment, the cubic prism seat 2 is arranged in the inner cavity of the pitching support 3; the left shaft 4 and the right shaft 5 are respectively fixed on the cubic prism seat 2 by a first screw 7, so that the cubic prism seat 2 can stably rotate around the pitch axis. The sleeve 9 is arranged on a rotor of the absolute value encoder 8 and is fixed by a second screw 11, and then a stator of the absolute value encoder 8 is arranged on the pitching support 3 and is fixed by a third screw 12; the sleeve 9 is arranged on the left shaft 4 and connected through a first key 13, the inner ring of the left angular contact ball bearing 6a is pre-tightened through a left pressing ring 14, the right shaft 5 is used as a power input shaft and connected with an input power transmission mechanism through a second key 15, the inner ring of the right angular contact ball bearing 6b is pre-tightened through a right pressing ring 17, finally the cubic prism 1 is arranged in the cubic prism seat 2 and is tightly pressed through a pressing plate 18 and fixed through a fourth screw 19, and after assembly is completed, the cubic prism 1 is rotated, so that the device is ensured to rotate stably without clamping stagnation.
For convenient assembly, the first screw 7 adopts an M3 hexagon socket countersunk head screw GB/T70.3-2000, so that a hexagon socket wrench can be conveniently screwed from the side; when the cube prism 1 is assembled, the gasket 10 is arranged on the right contact surface of the cube prism 1 and the cube prism seat 2, and 3M 3 set screws (GB/T71-1985) are used for pressing from the right side surface of the cube prism seat 2 to prevent the cube prism 1 from loosening axially; when the power transmission mechanism is input on the right shaft 5 through the second key 15, gear transmission, worm gear transmission, steel belt transmission and the like can be selected, and the power transmission connecting piece 16 can be a gear, a worm gear or a belt wheel and is determined according to the selected power transmission mechanism.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A cubic prism pitching rotation device is characterized by comprising a cubic prism (1), a cubic prism seat (2), a pitching support (3), a left shaft (4), a right shaft (5), a pair of angular contact ball bearings, a pressing plate (18), an absolute value encoder (8) and a sleeve (9); the cubic prism seat (2) is placed into the pitching support (3), a left shaft (4) and a right shaft (5) respectively penetrate through corresponding mounting holes at two sides of the cubic prism seat (2) and the pitching support (3), a pair of angular contact ball bearings are mounted back to back, the left shaft (4) and the right shaft (5) are fixed on the cubic prism seat (2), and the left shaft (4) and the right shaft (5) are used as pitching shafts, so that the cubic prism seat (2) can stably rotate along the pitching shafts; then, the stator of the absolute value encoder (8) is connected with the left side of the pitching support (3), and the rotor of the absolute value encoder (8) is connected with the left shaft (4) through a sleeve (9); and finally, the cubic prism (1) is arranged in the cubic prism seat (2) to realize the stable rotation of the cubic prism (1) along the pitching direction.
2. The cubic prism pitch rotation device according to claim 1, wherein the pair of angular contact ball bearings comprises a left angular contact ball bearing (6a) and a right angular contact ball bearing (6b), the left angular contact ball bearing (6a) being mounted on the left shaft (4), the right angular contact ball bearing (6b) being mounted on the right shaft (5); the tail end of the left shaft (4) is connected and installed with a left pressing ring (14) through threads, the tail end of the right shaft (5) is connected and installed with a right pressing ring (17) through threads, and pre-tightening is achieved on the left angular contact ball bearing (6a) and the right angular contact ball bearing (6b) through the left pressing ring (14) and the right pressing ring (17) respectively.
3. The pitching rotation apparatus for a cubic prism as claimed in claim 2, wherein said cubic prism housing (2) has an open end, and a pressing plate (18) is installed on the open end after the cubic prism (1) is installed in the cubic prism housing (2), and the pressing plate (18) is fixed on the cubic prism housing (2), and the cubic prism (1) is fastened by the pressing plate (18).
4. The cubic prism pitching rotating apparatus according to claim 3, wherein said pressing plates (18) are four in number, and are fixed to four flat surfaces of the open end of the cubic prism housing (2).
5. The cubic prism pitch rotation device according to claim 4, wherein the left shaft (4), the right shaft (5) and the cubic prism holder (2) are coupled by using hexagon socket countersunk head screws.
6. The cubic prism pitch rotation device according to claim 5, wherein the cubic prism holder (2) is fitted into an inner cavity of the pitch support (3).
7. Cube prism pitch turning device according to claim 6, characterized in that the sleeve (9) is fitted into the rotor of the absolute value encoder (8) and fixed with a second screw (11), and the stator of the absolute value encoder (8) is fitted into the pitch bearing (3) and fixed with a third screw (12).
8. The cubic prism pitch rotation device according to claim 7, wherein the sleeve (9) is fitted on the left shaft (4), coupled by a first key (13), and the inner ring of the left angular contact ball bearing (6a) is pre-tightened by a left pressing ring (14), and the right shaft (5) is a power input shaft, coupled to an input power transmission mechanism by a second key (15), and the inner ring of the right angular contact ball bearing (6b) is pre-tightened by a right pressing ring (17).
9. The cube prism pitch rotation apparatus according to claim 8, wherein the right contact surface of the cube prism (1) and the cube prism housing (2) is provided with a spacer (10) and pressed with 3M 3 set screws from the right side surface of the cube prism housing (2) to prevent the cube prism (1) from being axially loosened.
10. The cube prism pitch rotation apparatus of claim 9, wherein the right shaft (5) is input to a power transmission mechanism through a second key (15), and the power transmission mechanism is selected from a gear transmission, a worm gear transmission or a steel belt transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055642.3A CN112162377A (en) | 2020-09-29 | 2020-09-29 | Cubic prism every single move rotating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055642.3A CN112162377A (en) | 2020-09-29 | 2020-09-29 | Cubic prism every single move rotating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112162377A true CN112162377A (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011055642.3A Pending CN112162377A (en) | 2020-09-29 | 2020-09-29 | Cubic prism every single move rotating device |
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| CN (1) | CN112162377A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202149964U (en) * | 2011-07-21 | 2012-02-22 | 林云才 | Solar prism seat |
| CN102778896A (en) * | 2012-07-02 | 2012-11-14 | 洛阳师范学院 | Automatic solar tracking device |
| CN203069863U (en) * | 2012-12-20 | 2013-07-17 | 武汉天宇光电仪器有限公司 | Adjusting device applied to coincidence of image point in prism reflector and reflector reference point |
| CN104319584A (en) * | 2014-09-15 | 2015-01-28 | 中航光电科技股份有限公司 | Electric rotary connector |
| CN206115003U (en) * | 2016-08-30 | 2017-04-19 | 北京自动化控制设备研究所 | Prism mounting structure |
| CN106996772A (en) * | 2017-04-10 | 2017-08-01 | 武汉天宇光电仪器有限公司 | A kind of total station prism |
| CN110618515A (en) * | 2019-10-14 | 2019-12-27 | 中国铁路上海局集团有限公司南京桥工段 | Prism structure for track displacement detection |
| CN211263917U (en) * | 2019-12-27 | 2020-08-14 | 西安柒凌防务科技有限公司 | Pitching rotating device of reflector |
| CN111580242A (en) * | 2020-05-01 | 2020-08-25 | 湖北三江航天万峰科技发展有限公司 | High-precision reference prism device for field work |
-
2020
- 2020-09-29 CN CN202011055642.3A patent/CN112162377A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202149964U (en) * | 2011-07-21 | 2012-02-22 | 林云才 | Solar prism seat |
| CN102778896A (en) * | 2012-07-02 | 2012-11-14 | 洛阳师范学院 | Automatic solar tracking device |
| CN203069863U (en) * | 2012-12-20 | 2013-07-17 | 武汉天宇光电仪器有限公司 | Adjusting device applied to coincidence of image point in prism reflector and reflector reference point |
| CN104319584A (en) * | 2014-09-15 | 2015-01-28 | 中航光电科技股份有限公司 | Electric rotary connector |
| CN206115003U (en) * | 2016-08-30 | 2017-04-19 | 北京自动化控制设备研究所 | Prism mounting structure |
| CN106996772A (en) * | 2017-04-10 | 2017-08-01 | 武汉天宇光电仪器有限公司 | A kind of total station prism |
| CN110618515A (en) * | 2019-10-14 | 2019-12-27 | 中国铁路上海局集团有限公司南京桥工段 | Prism structure for track displacement detection |
| CN211263917U (en) * | 2019-12-27 | 2020-08-14 | 西安柒凌防务科技有限公司 | Pitching rotating device of reflector |
| CN111580242A (en) * | 2020-05-01 | 2020-08-25 | 湖北三江航天万峰科技发展有限公司 | High-precision reference prism device for field work |
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Application publication date: 20210101 |