CN114002779A - Machining method and application of collimator fixing end cover - Google Patents
Machining method and application of collimator fixing end cover Download PDFInfo
- Publication number
- CN114002779A CN114002779A CN202111310732.7A CN202111310732A CN114002779A CN 114002779 A CN114002779 A CN 114002779A CN 202111310732 A CN202111310732 A CN 202111310732A CN 114002779 A CN114002779 A CN 114002779A
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- China
- Prior art keywords
- end cover
- collimator
- positioning structure
- fixed end
- prism
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003754 machining Methods 0.000 title description 3
- 239000013307 optical fiber Substances 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 5
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 12
- 238000009434 installation Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3604—Rotary joints allowing relative rotational movement between opposing fibre or fibre bundle ends
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention belongs to the field of optical signal transmission, and particularly relates to a method for processing a collimator fixing end cover and application thereof, wherein the method for processing the collimator fixing end cover comprises the following steps: (1) preparing a fixed end cover blank, wherein the fixed end cover blank comprises a plurality of solid collimator fixed end cover preparation parts which are repeated continuously; (2) a plurality of mounting holes are axially arranged on the fixed end cover blank in a penetrating way; (3) processing and arranging a fourth positioning structure on each collimator fixed end prefabricated part, so that the fourth positioning structure on each collimator fixed end cover prefabricated part is in mirror symmetry after rotating 180 degrees; (4) and cutting along the contour of the prepared part of the fixed end cover of the collimator to obtain the fixed end cover of the finished collimator. The collimator fixing end cover is applied to the optical fiber rotary connector, so that the assembling steps and difficulty can be effectively reduced. Through the cooperation of the dove prism, the prism sleeve, the shaft end cover and the collimator fixing end cover, the light rotary connector free of adjustment is finally realized.
Description
Technical Field
The invention belongs to the field of optical signal transmission, and particularly relates to a method for processing a fixed end cover of a collimator and application thereof.
Background
The optical Fiber Rotary connector (FORJ) is also called optical Fiber slip ring, optical Fiber Rotary Joint, optical hinge, etc. and is used to solve the transmission problem of optical signal between opposite rotating parts, i.e. to ensure that the transmission of optical signal is not interrupted by rotation.
For example, the prior patent application with patent publication No. CN111487726A discloses a miniaturized multi-path optical fiber rotary connector, which includes a core, the core includes a rotary end outgoing line assembly, a fixed end outgoing line assembly, a transmission mechanism and a prism assembly; the rotating end outgoing line assembly and the fixed end outgoing line assembly are respectively arranged at two ends of the transmission mechanism, the transmission mechanism comprises an inner shaft, and the prism assembly is arranged in the inner shaft of the transmission mechanism; the prism assembly comprises a special-shaped dove prism and a prism sleeve, and the special-shaped dove prism is arranged in the prism sleeve; the special-shaped dove prism comprises an incident surface and an emergent surface which are opposite at two sides, the extension lines of the incident surface and the emergent surface form an included angle of 90 degrees, the bottom between the incident surface and the emergent surface is a horizontal refraction surface, the upper side of the refraction surface is a cylindrical non-working surface, the incident surface and the emergent surface which are light at two sides are working surfaces, the light is incident from the incident surface at one side, and the light is refracted at the refraction surface at the bottom and then is emitted from the emergent surface at the other opposite side; the cylindrical non-working surface of the special-shaped dove prism, the prism sleeve and the inner shaft are coaxial. However, in the patent application, the mounting holes of the collimator fixing end cover are difficult to be accurately and symmetrically arranged about the axis of the collimator fixing end cover, the position of the collimator fixing end cover on the optical fiber rotary connector needs to be adjusted, the assembly difficulty is increased, and the assembly links are increased.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for processing a collimator fixing end cover and application thereof, which can effectively manufacture the collimator fixing end cover meeting the requirements, thereby reducing the assembly process.
The specific scheme of the invention is as follows:
a method for processing a fixed end cover of a collimator comprises the following steps:
(1) preparing a fixed end cover blank, wherein the fixed end cover blank comprises a plurality of solid collimator fixed end cover preparation parts which are repeated continuously;
(2) a plurality of mounting holes are axially arranged on the fixed end cover blank in a penetrating way;
(3) processing and arranging a fourth positioning structure on each collimator fixed end prefabricated part, so that the fourth positioning structure on each collimator fixed end cover prefabricated part is in mirror symmetry after rotating 180 degrees;
(4) and cutting along the contour of the prepared part of the fixed end cover of the collimator to obtain the fixed end cover of the finished collimator.
The dove prism comprises an incident surface, an emergent surface, a positioning plane and a reflecting surface, wherein the positioning plane is connected between the incident surface and the emergent surface and is opposite to the reflecting surface; the prism sleeve comprises an inner surface, an inner plane is arranged on the inner surface, and the inner plane is attached to the positioning plane.
Wherein the positioning plane is parallel to the reflecting surface.
The prism sleeve comprises an outer surface, a first positioning structure is arranged on the outer surface, and the first positioning structure is matched with the second positioning structure to fix the relative position of the shaft end cover and the prism sleeve.
The collimator fixing end cover is provided with a third positioning structure, the collimator fixing end cover is provided with a fourth positioning structure, and the third positioning structure is matched with the fourth positioning structure, so that the relative position of the collimator fixing end cover and the shaft end cover is fixed.
The shaft end cover comprises a positioning end, the second positioning structure is arranged on the positioning end, the third positioning structure and the second positioning structure are shared, and the first positioning structure, the second positioning structure and the fourth positioning structure are all planes.
Advantageous effects
By using the method for processing the collimator fixing end cover, the collimator fixing end cover with the mounting hole absolutely rotationally symmetrical can be prepared, and the collimator fixing end cover can be applied to an optical fiber rotary connector, so that the assembling steps and difficulty can be effectively reduced. Through the cooperation of dove prism, prism sleeve, axle head end cover, the fixed end cover of collimater, the light swivelling joint ware that finally can realize exempting from the installation and transferring need not to consider installation and transferring equipment installation space, under the same clear aperture circumstances, the way number can be improved greatly.
Drawings
Figure 1 is a schematic view of a fiber optic rotary connector of the present invention,
figure 2 is a schematic view of a dove prism of the invention,
figure 3 is a top view of a dove prism of the invention,
figure 4 is a cross-sectional view of a dove prism of the invention,
figure 5 is a schematic view of the prism sleeve and dove prism of the invention in combination,
figure 6 is an axial cross-sectional view of a prism sleeve of the present invention,
figure 7 is a radial cross-sectional view of a prism sleeve of the present invention,
figure 8 is a schematic view of an end cap for a shaft of the present invention,
figure 9 is a schematic view of the mating of the end cap to the prism sleeve of the present invention,
figure 10 is a schematic view of the collimator mounting end cap of the present invention,
figure 11 is a schematic diagram of the collimator fixing end cap and dove prism of the present invention,
figure 12 is a schematic view of a fixed end cap blank of the present invention,
figure 13 is a schematic view of the process of the invention for fixing end cap blanks,
FIG. 14 is another schematic view of the process of securing end cap blanks according to the present invention.
Detailed Description
The multi-path optical fiber rotary connector comprises a dove prism 1, a prism sleeve 2, a shaft end cover 3 and a collimator fixing end cover 4, wherein the dove prism 1 is accommodated and fixed in the prism sleeve 2, the shaft end cover 3 is arranged at two ends of the prism sleeve 2, the collimator fixing end cover 4 is arranged at the outer side far away from the shaft end cover 3, and the prism sleeve 2, the shaft end cover 3 and the collimator fixing end cover 4 are coaxial; as shown in fig. 2, 3 and 4, the dove prism 1 comprises an incident surface 11, an emergent surface 12 and a reflecting surface 15 which are the same as CN111487726A, the incident surface 11 is perpendicular to the emergent surface 12, the normals of the planes of the incident surface 11, the emergent surface 12 and the reflecting surface 15 are located on the same plane, the dove prism 1 is characterized by further comprising a positioning plane 13, the positioning plane 13 is connected between the incident surface 11 and the emergent surface 12 and is opposite to the reflecting surface 15, the prism sleeve 2 comprises an inner surface 21 as shown in fig. 5 and 6, an inner plane 23 is arranged on the inner surface 21, the inner plane 23 is attached to the positioning plane 13, and the inner plane 23 limits the axial rotation of the dove prism 1.
Through improving dove prism 1, prism sleeve 2, increase locating plane 13 and interior plane 23 on prior art's basis, through locating plane 13 and interior plane 23 cooperation, the condition of dove prism 1 in prism sleeve 2 internal rotation among the prior art can not appear for the position of dove prism 1 and prism sleeve 2 is relatively fixed, thereby has reduced the link of adjustment dove prism position appearance in prism sleeve 2, has improved assembly efficiency. Secondly, the locating flat 13 is less likely to be damaged by stress during assembly and is easier to machine than other forms.
Wherein preferably, the positioning plane 13 is parallel to the reflection plane 15.
Specifically, the prism sleeve 2 is sequentially distributed with a feeding section 25, a matching section 26 and a limiting section 27 along the axial direction, the inner diameter of the feeding section 25 is larger than that of the matching section 26, the inner diameter of the matching section 26 is larger than that of the limiting section 27, the inner plane 23 is arranged on the inner wall of the matching section 26, the shape of the matching section 26 is matched with that of the dove prism 1, and the length of the matching section 26 is smaller than that of the dove prism 1. With the arrangement, in the process of feeding the dove prism 1 into the prism sleeve 2, as the size of the feeding section 25 is larger than that of the dove prism 1, excessive surface contact cannot be generated, and damage to the dove prism 1 due to stress is prevented, after the dove prism 1 enters the matching section 26, as the size of the dove prism 1 is larger than the limiting section 27, the dove prism 1 is limited in the matching section 26, and as the dove prism 1 is longer than the matching section 26, glue can be sealed on the dove prism 1 in the feeding section 25, so that the dove prism 1 is fixed in the prism sleeve 2, and the function of the dove prism 1 is not influenced.
As shown in fig. 1, the multi-path optical fiber rotary connector further includes a transmission mechanism 5 and an inner shaft 6, the inner shaft 6 is fixed relative to the transmission mechanism 5, the outer contour of the prism sleeve 2 matches with the inner contour of the inner shaft 6, so as to realize radial fixation of the prism sleeve 2, and the shaft end cap 3 is fixed on the transmission mechanism 5 through screws. Preferably, as shown in fig. 8, a plurality of waist-shaped screw mounting holes 34 are provided on the fixing surface 32 of the shaft end cap 3 corresponding to the transmission mechanism 5, so that when the relative position of the prism sleeve 2 and the transmission mechanism 5 deviates, the shaft end cap 3 fixed relative to the prism sleeve 2 can be fixed with the transmission mechanism 5 by screws at the adjusted position.
Preferably, the prism sleeve 2 includes an outer surface 22, a first positioning structure 24 is disposed on the outer surface 22, as shown in fig. 8, the shaft end cover 3 includes a positioning end 31, the positioning end 31 extends axially, the shaft end cover 3 is assisted to be positioned in cooperation with the prism sleeve 2, and a second positioning structure 33 is disposed on the positioning end 31. The first positioning structure 24 and the second positioning structure 33 are matched to fix the relative position of the shaft end cover 3 and the prism sleeve 2. Specifically, as shown in fig. 6, the first positioning structure 24 may be a plane, as shown in fig. 8, the second positioning structure 33 is also a plane, and the first positioning structure 24 is parallel to the second positioning structure 33, as shown in fig. 9, in the present technical solution, when in use, the square limiting block 27 is embedded between the first positioning structure 24 and the second positioning structure 33, so as to ensure that the positions of the first positioning structure 24 and the second positioning structure 33 are fixed, that is, the positions of the shaft end cap 3 and the prism sleeve 2 are fixed.
Further, a third positioning structure may be further disposed on the shaft end cover 3, as shown in fig. 10, a fourth positioning structure 41 is disposed on the collimator fixing end cover 4, and the third positioning structure is matched with the fourth positioning structure 41, so that the relative position between the shaft end cover 3 and the collimator fixing end cover 4 is fixed. For example, in the present embodiment, the third positioning structure and the second positioning structure 33 share a common plane, the fourth positioning structure 41 is a plane parallel to the second positioning structure 33, the fourth positioning structure 41 is matched with the third positioning structure, and the relative positions of the collimator fixing end cap 4 and the shaft end cap 3 are fixed. Through setting up first location structure 24, second location structure 33, third location structure and fourth location structure 41 for prism sleeve 2, axle head end cover 3, 4 three's of collimator fixed end cover position relatively fixed, thereby avoided having adjusted among the prior art prism sleeve 2 still need adjust the step of collimator fixed end cover 4 relative position after that, through the number of times that reduces the assembly, thereby reduced the error in the assembly regulation, and improved assembly efficiency.
It should be noted that the mounting hole provided at the center of the collimator fixing end cap 4 is difficult to be precisely arranged symmetrically about the axis thereof, as shown in fig. 11, which discloses the mirror image principle that the position of the mounting hole of the collimator fixing end cap is not symmetrical with respect to the central axis through the dove prism, and at this time, the mounting holes of the collimator fixing end caps 4 at the left and right ends should be precisely rotationally symmetrical. Therefore, the mounting holes of the collimator fixing end covers 4 at the two ends are preferably rotationally symmetrical, and the fourth positioning structures 41 of the collimator fixing end covers 4 at the two ends are mirror-symmetrical, so that the collimator fixing end covers 4 are mounted in place, and after the collimator fixing end covers are fixed relative to the shaft end cover 3 and the prism sleeve 2, the positions of the collimator fixing end covers 4 do not need to be adjusted, and the assembly efficiency is improved.
In order to ensure that the collimator fixing end covers 4 at two ends can be absolutely rotationally symmetrical, the invention also provides a machining method of the collimator fixing end covers 4. Firstly, a fixed end cover blank is prepared, wherein the fixed end cover blank comprises a plurality of solid collimator fixed end cover preparation parts which are repeated continuously. For example, as shown in fig. 12, the fixed end cap blank includes two identical collimator fixed end caps arranged in series. Then, a plurality of mounting holes parallel to the axis of the fixed end cover blank are arranged on the fixed end cover blank in a penetrating mode. As shown in fig. 13, the number of the mounting holes in this embodiment is two, and is not symmetrical about the axis. Thereafter, as shown in fig. 14, a fourth positioning structure 41 is machined on each collimator-fixing end preparation, so that the fourth positioning structure 41 on each collimator-fixing end cover preparation is mirror-symmetrical after being rotated by 180 °. And finally, cutting along the contour of the prepared part of the collimator fixing end cover to obtain the finished collimator fixing end cover.
If according to the processing mode of the prior art, two collimator fixed end covers with installation holes which are exactly rotationally symmetrical need to be processed, but the processing is very difficult because the angle of the installation holes and the distance between the installation holes and the axis are not special. However, if the manufacturing method of the collimator fixing end cover 4 of the invention is used, the processed fixing end cover blanks are cut into two, the two cut collimator fixing end covers are necessarily rotationally symmetrical, the situation of mismatching cannot occur, the processing difficulty of the collimator fixing end covers is greatly reduced, and the processing steps are reduced.
Claims (8)
1. A method for processing a fixed end cover of a collimator is characterized by comprising the following steps:
(1) preparing a fixed end cover blank, wherein the fixed end cover blank comprises a plurality of solid collimator fixed end cover preparation parts which are repeated continuously;
(2) a plurality of mounting holes are axially arranged on the fixed end cover blank in a penetrating way;
(3) a fourth positioning structure (41) is machined and arranged on each collimator fixed end prefabricated part, so that the fourth positioning structures (41) on each collimator fixed end cover prefabricated part are in mirror symmetry after rotating 180 degrees;
(4) and cutting along the contour of the prepared part of the fixed end cover of the collimator to obtain the fixed end cover of the finished collimator.
2. A collimator mounting end cap made by the method of claim 1.
3. An optical fiber rotary connector is characterized by comprising a dove prism (1), a prism sleeve (2), a shaft end cover (3), an inner shaft (5) and a collimator fixing end cover according to claim 2, wherein the dove prism (1) is accommodated and fixed in the prism sleeve (2), the shaft end cover (3) is arranged at two ends of the prism sleeve (2), the collimator fixing end cover (4) is arranged on the outer side far away from the shaft end cover (3), and the prism sleeve (2), the shaft end cover (3) and the collimator fixing end cover (4) are coaxial.
4. A fiber optic rotary connector according to claim 3, wherein the dove prism (1) comprises an entrance face (11), an exit face (12), a positioning plane (13) and a reflecting face (15), the positioning plane (13) being connected between the entrance face (11) and the exit face (12) and being opposite to the reflecting face (15); prism sleeve (2) include internal surface (21), be provided with interior plane (23) on internal surface (21), interior plane (23) and location plane (13) laminating.
5. Optical fiber rotary connector according to claim 4, characterized in that the positioning plane (13) is parallel to the reflecting surface (15).
6. The optical fiber rotary connector according to claim 3, wherein a second positioning structure (33) is disposed on the end cap (3), the prism sleeve (2) comprises an outer surface (22), a first positioning structure (24) is disposed on the outer surface (22), and the first positioning structure (24) and the second positioning structure (33) are matched to fix the relative position of the end cap (3) and the prism sleeve (2).
7. The optical fiber rotary connector according to claim 3 or 6, wherein a third positioning structure is arranged on the end cover (3), a fourth positioning structure (41) is arranged on the collimator fixing end cover (4), and the third positioning structure and the fourth positioning structure (41) are matched, so that the relative positions of the end cover (3) and the collimator fixing end cover (4) are fixed.
8. The optical fiber rotary connector according to claim 7, wherein the end cap (3) comprises a positioning end (31), the second positioning structure (33) is disposed on the positioning end (31), the third positioning structure is common to the second positioning structure (33), and the first positioning structure (24), the second positioning structure (33) and the fourth positioning structure (41) are all planar.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021104644756 | 2021-04-28 | ||
| CN202110464475 | 2021-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114002779A true CN114002779A (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111310732.7A Pending CN114002779A (en) | 2021-04-28 | 2021-11-04 | Machining method and application of collimator fixing end cover |
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| CN (1) | CN114002779A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201707465U (en) * | 2010-07-09 | 2011-01-12 | 中国电子科技集团公司第十四研究所 | Multi-path fiber optic rotary joint |
| CN208179015U (en) * | 2018-05-08 | 2018-12-04 | 新昌县羽林街道全顺机械厂 | A kind of cutting equipment clamping and positioning device |
| CN111487726A (en) * | 2020-05-29 | 2020-08-04 | 中国电子科技集团公司第十四研究所 | Miniaturized multichannel optical fiber rotary connector |
| CN112192238A (en) * | 2020-08-09 | 2021-01-08 | 苏州新博源工业控制技术有限公司 | Unmanned terminal equipment for mirror motion combined cutting |
| CN112492891A (en) * | 2018-04-27 | 2021-03-12 | 上海诺基亚贝尔股份有限公司 | Multi-band antenna feed |
-
2021
- 2021-11-04 CN CN202111310732.7A patent/CN114002779A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201707465U (en) * | 2010-07-09 | 2011-01-12 | 中国电子科技集团公司第十四研究所 | Multi-path fiber optic rotary joint |
| CN112492891A (en) * | 2018-04-27 | 2021-03-12 | 上海诺基亚贝尔股份有限公司 | Multi-band antenna feed |
| CN208179015U (en) * | 2018-05-08 | 2018-12-04 | 新昌县羽林街道全顺机械厂 | A kind of cutting equipment clamping and positioning device |
| CN111487726A (en) * | 2020-05-29 | 2020-08-04 | 中国电子科技集团公司第十四研究所 | Miniaturized multichannel optical fiber rotary connector |
| CN112192238A (en) * | 2020-08-09 | 2021-01-08 | 苏州新博源工业控制技术有限公司 | Unmanned terminal equipment for mirror motion combined cutting |
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Application publication date: 20220201 |