CN111580242A - High-precision reference prism device for field work - Google Patents
High-precision reference prism device for field work Download PDFInfo
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- CN111580242A CN111580242A CN202010368038.XA CN202010368038A CN111580242A CN 111580242 A CN111580242 A CN 111580242A CN 202010368038 A CN202010368038 A CN 202010368038A CN 111580242 A CN111580242 A CN 111580242A
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- prism
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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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- 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
- G02B7/181—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a high-precision reference prism device for field work, which comprises a prism seat, wherein a V-shaped groove is arranged on the front surface of the prism seat, grooves are formed in the positions, located in the middle, of the inner walls of the V-shaped groove, a rectangular tool withdrawal groove is formed in the positions, located at the position where two surfaces are connected, of the inner walls of the V-shaped groove, and mounting lugs are arranged on the top of the prism seat and the top of the prism seat. Through setting up adjusting plate, the V-arrangement groove, rubber coating counter bore and rubber coating hole groove B, reached the prism can be long-time stable use difficult effect that ftractures under open-air adverse circumstances, solved current benchmark prism and used under open-air adverse circumstances, the bonding strength of its prism can't remain stable under the great environment of difference in temperature and humidity gap, also do not reserve the removal thermal expansion space for the prism, and then the open-air long-time use appears the prism fracture very easily, come unstuck and the relatively poor problem of stability ability. The method is suitable for high-precision reference prisms.
Description
Technical Field
The invention relates to optical aiming, in particular to a high-precision reference prism device for field work.
Background
The high-precision reference prism device is a common optical reference and mainly used as a high-precision true north reference or an azimuth reference, the main parameter used as the true north reference is an included angle between a normal line of a prism and true north, and the main parameter used as the azimuth reference is an included angle between the normal line of the prism and a fixed azimuth. As an azimuth reference, the long-term stability of the normal position of the installed reference prism is a main technical index of the reference prism, the annual change amount of the reference prism is generally required to be less than 1%, the annual change amount of the high-precision reference prism is less than 0.5%, the prism material in the reference prism is usually optical glass, and the optical glass material has the characteristics of high light reflectivity, high rigidity, small thermal expansion coefficient and small material stress change, so the long-term stability of the reference prism is high, and the defect is that the material is brittle. In order to ensure the long-term stability of the precision of the reference prism, the internal prism is required to be fixed stably for a long time during fixing, so that stress deformation or looseness is prevented, and the phenomenon of cracking caused by the influence of external force after the prism is fixed is avoided. Such as vibration impact, environmental temperature difference and other external force conditions.
At present, the common reference prism structure in China is as follows: the prism and the titanium alloy are bonded and fixed by using the special optical epoxy glue, and because the thermal expansion coefficients of the titanium alloy, the optical glass and the optical epoxy glue are close, the bonded reference prism can ensure long-term stability and can also avoid the stress cracking phenomenon of the reference prism under a certain temperature difference. However, under the condition of field working environment, due to the fact that the impact and the temperature and humidity are large, the reference prism with the structure is prone to cracking, degumming or poor stability after being used for a period of time, and the main reason of the problem is that the gluing process between the prism and the titanium alloy is difficult to control, the bonding strength is required to be considered to guarantee long-term stability, and a certain thermal expansion space is required to be reserved for the prism to prevent the prism from cracking and damaging; meanwhile, the reference prism is inconvenient to maintain and is a disposable structural component, if the internal prism is damaged or loosened, the whole component can only be completely scrapped, and after the internal prism cannot be repeatedly disassembled, parts can be replaced for use; therefore, the stability of the reference prisms working in the field or under severe conditions is difficult to ensure, so that a short periodic calibration period and a short maintenance service period are set, the extra calibration workload of the reference prisms is increased, and the service efficiency of the equipment is reduced.
Disclosure of Invention
The invention aims to provide a high-precision reference prism device for field work, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-precision reference prism device for field work comprises a prism seat, wherein a V-shaped groove is arranged on the front surface of the prism seat, a groove is formed in the position, located in the middle, of the inner wall of the V-shaped groove, a rectangular tool withdrawal groove is formed in the position, located in the position where two surfaces are connected, of the inner wall of the V-shaped groove, mounting support lugs are arranged on the top and the top of the prism seat, mounting holes are formed in the front surface of the mounting support lugs, fixing holes and a gluing hole groove A are formed in the two sides of the prism seat respectively, a prism is arranged on the front surface of the prism seat, the surface of the prism is movably connected with the inside of the V-shaped groove, adjusting press plates are arranged on the two sides of the prism seat, a mounting waist-shaped hole, a gluing hole groove B and a gluing counter bore are formed in the surface of the adjusting press plate respectively, the gluing counter bore is located in the front position, the back of the pressing strip is movably connected with the front of the prism, and a back chipping tool withdrawal groove is formed in the position, connected with the back of the pressing strip, of one side, close to the prism seat, of the adjusting pressing plate.
As a further scheme of the invention: the shape of prism is isosceles right angle triangular prism, and the length of prism is 33mm, and the inner wall in V-arrangement groove matches with the shape of prism each other.
As a further scheme of the invention: the coating film layer is arranged at the position, attached to the V-shaped groove, of the surface of the prism, protective black paint is arranged in the area, located on the groove, of the surface of the prism, and the size of the protective black paint is 22 mm.
As a further scheme of the invention: the edge lines of the prism except the edge line on the right angle are provided with chamfers, and the prism is made of optical glass K9.
As a further scheme of the invention: one side of the adjusting pressure plate close to the prism seat and the back of the pressing strip are both set to be finish machining faces, and the adjusting pressure plate is made of aluminum plates 2A 12.
As a further scheme of the invention: the quantity of installation waist shape hole, rubber coating hole groove B and rubber coating counter bore is eight, two and two respectively, and the quantity that every adjusting plate corresponded installation waist shape hole, rubber coating hole groove B and rubber coating counter bore is four respectively, one and one, and the position department that is close to top and top on adjusting plate's surface is close to respectively setting up in every four installation waist shape holes, and rubber coating counter bore and rubber coating hole groove B set up on adjusting plate's horizontal axis.
As a further scheme of the invention: the gluing counter bore is funnel-shaped.
As a further scheme of the invention: the length of the V-shaped groove is 25.5mm, the length of the groove is 20mm, the depth of the groove is 0.5mm, and the length of the groove is slightly 0.5-1 mm longer than that of the protective black paint.
As a further scheme of the invention: the prism seat is made of an aluminum plate 2A12, and the adjusting pressure plate is in threaded connection with the inner wall of the mounting hole through a screw.
As a still further scheme of the invention: the using method comprises the following steps:
the method comprises the following steps that firstly, a right-angle surface of a prism is in butt joint with a V-shaped groove on a prism seat, then an adjusting pressure plate is fixedly connected to two sides of the prism seat through screws, all acute-angle edge lines on the prism are not in direct contact or interference with the prism seat and the adjusting pressure plate, and stress concentration is reduced;
step two, controlling the pre-tightening pressure of the adjusting pressing plates at two sides of the prism seat for pressing the prism light inlet surface to be 1.5N, controlling the pre-tightening pressure of the adjusting pressing plates at two ends for pressing the prism light inlet surface to be 1N-3N, then coating south large sealant at the gluing counter bore to limit the longitudinal direction of the prism, coating J two-component curing glue at the gluing hole groove B, filling elastic sealing positioning glue by using auxiliary limiting between the adjusting pressing plates and the prism seat, filling the elastic sealing positioning glue in the gaps between the adjusting pressing plates at two ends and the prism end surface, filling the elastic sealing positioning glue in the gluing counter bore of the adjusting pressing plates, and filling anti-loosening curing glue after the adjusting pressing plates at two ends are fixed with the prism seat, and filling the anti-;
and step three, after the sealant and the curing adhesive are completely cured, stabilizing again to eliminate residual internal stress generated in the assembly process of the reference prism device.
Compared with the prior art, the invention has the beneficial effects that:
1. the right-angle surface of the prism is attached to the V-shaped groove by arranging the adjusting pressure plate, the V-shaped groove, the gluing counter bore and the gluing hole groove B, then the adjusting pressure plate is fixed on two sides of the prism seat through screws, so that the back surface of the batten is attached to the prism device to limit the prism, then the insides of the gluing counter bore and the gluing hole groove B are respectively coated with the sealant and the curing glue to longitudinally limit the prism and limit the adjusting pressure plate and the prism seat, the prism is heated and expanded to extrude the elastic sealant, a certain reserved space is reserved, the effect that the prism can be stably used for a long time and is not easy to crack in a severe environment in the field is achieved, the problem that the existing reference prism is used in a severe environment in the field is solved, the bonding strength of the prism cannot be stably kept in an environment with large temperature difference and humidity difference, a thermal expansion space is not reserved for moving the prism, and the prism, The degumming and stability performance are poor.
2. Thereby fix adjusting the clamp plate and prism seat through setting up with the screw and stabilize the prism, then fill with the sealant and the solidification is glued for whole benchmark prism dismouting is simple, the maintenance of being convenient for.
Drawings
Fig. 1 is a front view of a high-precision reference prism device for field work.
Fig. 2 is a schematic diagram of the overall structure of a high-precision reference prism device for field work.
Fig. 3 is an exploded view of the overall structure of a high-precision reference prism device for field work.
Fig. 4 is a schematic diagram of a whole-day structure of a prism in a high-precision reference prism device for field work.
Fig. 5 is a schematic view of the overall structure of an adjusting pressure plate in a high-precision reference prism device for field work.
Fig. 6 is a schematic view of the overall structure of a prism base in a high-precision reference prism device for field work.
As shown in the figure: 1. a prism seat; 2. a V-shaped groove; 3. a groove; 4. a rectangular tool withdrawal groove; 5. mounting a support lug; 6. mounting holes; 7. a fixing hole; 8. gluing a hole groove A; 9. a prism; 10. adjusting the pressure plate; 11. installing a waist-shaped hole; 12. gluing a hole groove B; 13. gluing a counter bore; 14. layering; 15. and (4) removing the root and the tool withdrawal groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, in the embodiment of the present invention, a high-precision reference prism device for field work includes a prism base 1, the prism base 1 is made of an aluminum plate 2a12, the bottom of the prism base 1 is finish-machined and is provided with a small groove to reduce a contact area during installation, an adjusting pressure plate 10 is in threaded connection with an inner wall of an installation hole 6 through a screw, a V-shaped groove 2 is provided on the front surface of the prism base 1, the length of the V-shaped groove 2 is 25.5mm, the length of a groove 3 is 20mm, the depth of the groove 3 is 0.5mm, the length of the groove 3 is slightly 0.5 to 1mm longer than the length of a protective black paint, a groove 3 is provided at a position of the middle part of the inner wall of the V-shaped groove 2, and the purpose: prevent to protect the surface emergence of black lacquer and prism 9 and interfere, minimize coating film layer and outside air's area of contact simultaneously prevents coating film layer oxidation, purpose two: the length of a right angle positioning surface between a V-shaped groove 2 on a prism seat 1 and a prism is reduced, the relation between the total length of the V-shaped groove 2 and the total length of the prism 9 is that the total length of the V-shaped groove 2 minus the total thermal expansion degree of the prism 9 is equal to 0.15mm (+ -0.05 mm), a rectangular tool withdrawal groove 4 is arranged at the position where the inner wall of the V-shaped groove 2 is connected with two surfaces, the interference of a ridge line between the V-shaped groove 2 and two reflecting surfaces of the prism 9 is prevented, mounting lugs 5 are arranged at the top and the top of the prism seat 1, a mounting hole 6 is arranged on the front surface of each mounting lug 5, the prism seat 1 is convenient to mount, a fixing hole 7 and a glue coating hole A8 are respectively arranged on two sides of the prism seat 1, the prism 9 is arranged on the front surface of the prism seat 1, the reflecting surface of the prism 9 is matched and fixed with the V-shaped groove 2, a light inlet surface is level with the upper part of the, the prism 9 is in the shape of an isosceles right triangular prism, the length of the prism 9 is 33mm, the inner wall of the V-shaped groove 2 is matched with the shape of the prism 9, a film coating layer is arranged at the position where the surface of the prism 9 is attached to the V-shaped groove 2, the film coating layer is a reflecting surface, protective black paint is arranged in the area, located in the groove 3, of the surface of the prism 9, the size of the protective black paint is 22mm, the edge lines of the prism 9 except the edge line on the right angle are provided with chamfers, the prism 9 is made of optical glass K9, the optical performance of the glass is optimal, the surface of the prism 9 is movably connected with the inside of the V-shaped groove 2, adjusting pressing plates 10 are arranged on two sides of the prism seat 1, one side, close to the prism seat 1, of each adjusting pressing plate 10 and the back surface of the pressing strip 14 are both provided with finish machining surfaces, the adjusting range of each adjusting pressing plate 10 is 0-0.5mm, the flexibility of the adjusting pressure plate is improved, the surface of the adjusting pressure plate 10 is respectively provided with an installation waist-shaped hole 11, a gluing hole groove B12 and a gluing counter bore 13, the number of the installation waist-shaped hole 11, the number of the gluing hole groove B12 and the number of the gluing counter bore 13 are respectively eight, two and two, the number of the installation waist-shaped hole 11, the gluing hole groove and the gluing counter bore 13 corresponding to each adjusting pressure plate 10 are respectively four, one and one, every four installation waist-shaped holes 11 are respectively arranged at the positions of the surface of the adjusting pressure plate 10 close to the top and the top, the gluing counter bore 13 and the gluing hole groove B12 are arranged on the horizontal axis of the adjusting pressure plate 10, the gluing counter bore 13 is funnel-shaped, the gluing counter bore 13 is arranged at the position of the front side of the gluing hole groove B12, the installation waist-shaped holes 11 are arranged above and below the gluing counter bore 13 and the gluing hole groove B12, one side of the adjusting pressure plate 10 close to the prism, a back chipping tool withdrawal groove 15 is formed in a position, close to one side of the prism seat 1, of the adjusting pressure plate 10 and connected with the back of the pressing strip 14, the light passing area of the reference prism is 20mm x 30mm, and the using method is as follows:
firstly, the right-angle surface of a prism 9 is in butt joint with a V-shaped groove 2 on a prism seat 1, then an adjusting pressure plate 10 is fixedly connected to two sides of the prism seat 1 through screws, and all acute-angle edge lines on the prism 9 are not in direct contact or interference with the prism seat 1 and the adjusting pressure plate 10, so that stress concentration is reduced.
And step two, controlling the pre-tightening pressure of the adjusting pressing plates 10 at two sides of the prism seat 1 for pressing the light inlet surface of the prism 9 to be 1.5N, controlling the pre-tightening pressure of the adjusting pressing plates 10 at two ends for pressing the light inlet surface of the prism 9 to be 1N-3N, then coating a south 703 sealant at the gluing counterbore 13 to limit the longitudinal direction of the prism 9, coating J133 two-component curing glue at the gluing hole B12, filling elastic sealing positioning glue in a gap between the adjusting pressing plates 10 at two ends and the end surface of the prism 9 by using auxiliary limiting between the adjusting pressing plates 10 and the prism seat 1, filling the elastic sealing positioning glue in the gluing counterbores of the adjusting pressing plates 10, and filling anti-loosening curing glue in the gluing hole B12 of the adjusting pressing plates 10 after the adjusting pressing plates 10 at two ends are fixed with the prism.
And step three, after the sealant and the curing adhesive are completely cured, stabilizing again to eliminate residual internal stress generated in the assembly process of the reference prism device.
When the device is used, one side of a film coating layer driven by a prism 9 is attached to a V-shaped groove 2, so that protective black paint is positioned in a groove 3 area, then an adjusting pressure plate 10 is fixed on two sides of a prism seat 1 through screws, so that the back surface of a pressing strip 14 is attached to the front surface of the prism 9, in the assembling process, all edge lines on the prism 9 are not in direct contact or interference with the prism seat 1 and the adjusting pressure plate 10, then the adjusting pressure plate 10 is finely adjusted, so that the pre-tightening pressure of the light inlet surface of the adjusting pressure plate 10 is controlled to be 1.5N, then south 703 sealant is coated at a glue counter bore 13 to limit the longitudinal direction of the prism 9, J133 two-component fixed-phone glue is coated at a glue coating hole B12, the adjusting pressure plate 10 and the prism seat 1 are subjected to auxiliary limiting, and then after the fixed-phone glue and the fixed-phone are all fixed, the reference prism is subjected to stabilization treatment again, so that, make benchmark prism difficult to receive the influence of stability and humidity in field usage, the junction of its prism 9 all has corresponding expansion space to make prism 9 also be difficult for the phenomenon of fracture when field temperature is great, and this benchmark prism simple structure is convenient for change and maintenance to the part.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a high accuracy benchmark prism device of field work, including prism seat (1), a serial communication port, the front of prism seat (1) is provided with V-arrangement groove (2), the position department that the inner wall of V-arrangement groove (2) is located the middle part all sets up fluted (3), the position department that the inner wall of V-arrangement groove (2) is located two face connections is provided with rectangle tool withdrawal groove (4), the top and the top of prism seat (1) all are provided with installation journal stirrup (5), mounting hole (6) have been seted up in the front of installation journal stirrup (5), fixed orifices (7) and rubber coating hole groove A (8) have respectively been seted up to the both sides of prism seat (1), the front of prism seat (1) is provided with prism (9), the inside swing joint in surface and V-arrangement groove (2) of prism (9), the both sides of prism seat (1) all are provided with adjusting plate (10), the surface of adjusting plate (10) has been seted up installation kidney-shaped, The prism base adjusting device comprises a gluing hole groove B (12) and a gluing counter bore (13), wherein the gluing counter bore (13) is located at the front position of the gluing hole groove B (12), an installation waist-shaped hole (11) is located above and below the gluing counter bore (13) and the gluing hole groove B (12), a pressing strip (14) is arranged on one side, close to a prism base (1), of an adjusting pressing plate (10), the back face of the pressing strip (14) is movably connected with the front face of a prism (9), and a back chipping tool withdrawal groove (15) is formed in the position, connected with the back face of the pressing strip (14), of one side, close to the prism base (1), of the adjusting pressing plate (10.
2. A high-precision reference prism device for field work according to claim 1, characterized in that the prism (9) is in the shape of an isosceles right triangular prism, the length of the prism (9) is 33mm, and the inner wall of the V-shaped groove (2) and the shape of the prism (9) are matched.
3. The high-precision reference prism device for the field work according to claim 1, wherein a coating layer is arranged at the position where the surface of the prism (9) is attached to the V-shaped groove (2), and a protective black paint is arranged on the surface of the prism (9) in the area of the groove (3).
4. A high-precision reference prism device for field work according to claim 1, characterized in that the edges of the prism (9) except the edges at right angles are provided with chamfers, and the material of the prism (9) is optical glass K9.
5. The high-precision reference prism device for field work according to claim 1, wherein one side of the adjusting pressure plate (10) close to the prism seat (1) and the back surface of the pressing strip (14) are provided with finish machining surfaces, and the material of the adjusting pressure plate (10) is aluminum plate 2A 12.
6. The high-precision reference prism device for field work according to claim 1, wherein the number of the installation waist-shaped holes (11), the number of the glue coating hole grooves B (12) and the number of the glue coating counter bores (13) are eight, two and two respectively, the number of the installation waist-shaped holes (11), the number of the glue coating hole grooves B (12) and the number of the glue coating counter bores (13) corresponding to each adjusting pressure plate (10) are four, one and one respectively, every four installation waist-shaped holes (11) are respectively arranged on the positions, close to the top, of the surface of the adjusting pressure plate (10), and the glue coating counter bores (13) and the glue coating hole grooves B (12) are arranged on the horizontal axis of the adjusting pressure plate (10).
7. A field work high-precision reference prism device according to claim 1, characterized in that the glue-coated counter bore (13) is funnel-shaped.
8. A field work high precision reference prism device according to claim 1, characterized in that the length of the V-shaped groove (2) is 25.5mm, the length of the groove (3) is 20mm, the depth is 0.5mm, and the length of the groove (3) is 0.5-1 mm longer than the length of the protective black paint.
9. A high-precision reference prism device for field work according to claim 1, characterized in that the prism base (1) is made of aluminum plate 2A12, and the adjusting pressure plate (10) is screwed with the inner wall of the mounting hole through screws.
10. A field work high accuracy reference prism device according to claim 8, wherein the protective black paint is 22mm in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010368038.XA CN111580242A (en) | 2020-05-01 | 2020-05-01 | High-precision reference prism device for field work |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010368038.XA CN111580242A (en) | 2020-05-01 | 2020-05-01 | High-precision reference prism device for field work |
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| CN111580242A true CN111580242A (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010368038.XA Pending CN111580242A (en) | 2020-05-01 | 2020-05-01 | High-precision reference prism device for field work |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162377A (en) * | 2020-09-29 | 2021-01-01 | 西安应用光学研究所 | Cubic prism every single move rotating device |
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| CN108303780A (en) * | 2018-01-10 | 2018-07-20 | 湖北三江航天红峰控制有限公司 | A kind of prism bonding device and its method |
| CN208968563U (en) * | 2018-10-09 | 2019-06-11 | 湖南航天机电设备与特种材料研究所 | One kind drawing northern reference mirror |
| CN209070183U (en) * | 2018-12-27 | 2019-07-05 | 湖南航天机电设备与特种材料研究所 | Assembly tooling for right-angle prism component |
| CN209496160U (en) * | 2019-01-15 | 2019-10-15 | 珠海凯利得新材料有限公司 | One-piece type prism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206115003U (en) * | 2016-08-30 | 2017-04-19 | 北京自动化控制设备研究所 | Prism mounting structure |
| CN108303780A (en) * | 2018-01-10 | 2018-07-20 | 湖北三江航天红峰控制有限公司 | A kind of prism bonding device and its method |
| CN108274340A (en) * | 2018-03-30 | 2018-07-13 | 马鞍山市江南光学有限公司 | A kind of positioning tool of prism ridge rib and its positioning and processing method |
| CN208968563U (en) * | 2018-10-09 | 2019-06-11 | 湖南航天机电设备与特种材料研究所 | One kind drawing northern reference mirror |
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| CN209496160U (en) * | 2019-01-15 | 2019-10-15 | 珠海凯利得新材料有限公司 | One-piece type prism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112162377A (en) * | 2020-09-29 | 2021-01-01 | 西安应用光学研究所 | Cubic prism every single move rotating device |
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Application publication date: 20200825 |