CN111069981B - Roof prism processing technology - Google Patents
Roof prism processing technology Download PDFInfo
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- CN111069981B CN111069981B CN201911387962.6A CN201911387962A CN111069981B CN 111069981 B CN111069981 B CN 111069981B CN 201911387962 A CN201911387962 A CN 201911387962A CN 111069981 B CN111069981 B CN 111069981B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/005—Blocking means, chucks or the like; Alignment devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/27—Work carriers
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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a roof prism processing technology, and relates to the technical field of roof prism processing. The processing steps comprise: s01, taking roof prism blanks, and grinding and processing two side faces; s02, grinding and polishing the large surface of the roof prism rough material to process the surface of the roof ridge; s03, positioning by using the surface of the ridge edge, and grinding and polishing to form two right-angle surfaces; and S04, positioning by utilizing the side surfaces, and grinding and polishing to form two ridge surfaces. According to the invention, each surface is processed in place once, the production process is reduced by nearly half, and the efficiency is improved by about one time; simultaneously, the superposition of artificial operation errors in two processes of grinding and polishing is reduced, in addition, the side face and the ridge face are firstly subjected to finish machining before the right-angle face and the ridge face are machined, the right-angle face and the ridge face are machined by utilizing the two faces as reference faces in a positioning mode, and the product precision and the qualified rate are greatly improved.
Description
Technical Field
The invention relates to the technical field of roof prism processing, in particular to a roof prism processing technology.
Background
The right-angle roof prism is a reflecting prism formed by replacing the large surface of the right-angle prism with two mutually perpendicular reflecting surfaces, wherein the two reflecting surfaces are called as a roof surface, and the two right-angle surfaces are respectively used as an incident surface and an emergent surface of light. The right angle roof prism can invert and deflect 90 the image, i.e. when passing through the prism, the outgoing rays are perpendicular to the incoming rays, and the image is reflected from right to left and top to bottom. Therefore, the right-angle roof prism is mainly used for reflecting light rays in an optical imaging system, is not limited by a critical angle of total reflection, and can accept incident light with a larger angle.
The traditional way to produce a right-angle roof prism is: the method comprises the steps of grinding a blank with the shape and the size equivalent to those of a product by utilizing a right-angle prism blank, and then sequentially polishing and processing a right-angle surface and a roof ridge surface of the blank. The processing mode has complex procedures, time and labor are wasted in the processing process, and the efficiency is low; the angle precision of the product and the surface type precision of each surface are difficult to control, and the yield is low; the processed right-angle roof prism has poor precision of the roof angle, so that emergent rays are deflected to a larger degree when a finished product is imaged, and the imaging definition and authenticity are poor.
Through retrieval, chinese patent, application publication No.: CN 102794686 a, application publication date: 2012.11.28, discloses a polishing process for a prism of a Smitt roof, which comprises a prism blank body and a corresponding profile modeling, wherein the included angle between the first surface and the second surface on the prism blank body and the profile modeling is 45 degrees, the included angle between the third surface and the fourth surface is 90 degrees, the fifth surface and the sixth surface are parallel to each other, the surfaces of the prism blank body and the profile modeling are glued by a light glue process in an optical cold processing process, and the first surface, the second surface, the third surface and the fourth surface of the prism blank body are polished and processed respectively. In the processing process, the angular precision of the product is ensured by observing and calculating the interference fringes of the product and adjusting the surface flatness and the parallelism difference of the product by a polishing method. The processing technology in the invention is that the prism blank body is firstly ground and processed, and then each working surface of the prism blank body is polished, so that the production process is time-consuming and labor-consuming, and the efficiency is low; and the precision and the qualification rate of the processed finished product are low.
Disclosure of Invention
Technical problem to be solved by the invention
Aiming at the problems of low production efficiency, low qualification rate and low product precision of the existing production process of the right-angle roof prism, the invention provides the roof prism processing process, each surface is processed in place once, the production procedure is reduced by nearly half, and the efficiency is improved by about one time; simultaneously, the superposition of artificial operation errors in two processes of grinding and polishing is reduced, in addition, the side face and the ridge face are firstly subjected to finish machining before the right-angle face and the ridge face are machined, the right-angle face and the ridge face are machined by utilizing the two faces as reference faces in a positioning mode, and the product precision and the qualified rate are greatly improved.
Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
a roof prism processing technology comprises the following steps:
s01, taking roof prism blanks, and grinding and processing two side faces;
s02, grinding and polishing the large surface of the roof prism rough material to process the surface of the roof ridge;
s03, positioning by using the surface of the ridge edge, and grinding and polishing to form two right-angle surfaces;
and S04, positioning by utilizing the side surfaces, and grinding and polishing to form two ridge surfaces.
Further, the processing step of the side face comprises:
wiping one side face of the roof prism rough material with an acetone reagent, then placing the roof prism rough material on a tray, fixing the roof prism rough material with optical glue, and smearing protective paint around the roof prism rough material after the glue is dried;
and ii, uniformly placing the whole tray in a biaxial machine after the tray is fully placed, grinding the upward side surface of the roof prism rough material from top to bottom until the grain size of the sand holes on the surface is uniformly observed under a magnifying lens of 6 times without scratches.
Further, the processing step of the surface of the ridge comprises the following steps:
bonding one side face to the side face of the leaning body I through optical cement, ensuring that the large face of the ridge prism rough material is horizontally upward and higher than the upper end of the leaning body I, and then fixing the lower end of the leaning body I on a tray through the optical cement;
ii, after the tray is uniformly placed, the whole tray is placed in a biaxial machine, the large surface of the roof prism rough material is ground from top to bottom, the grinding size error is controlled within 0.005mm, the surface flatness is controlled within 0.001mm, and the grain size of the ground sand holes on the surface is uniformly observed under a magnifying lens of 6 times without scratches;
and iii, polishing the ground surface until the surface flatness is less than 1/8 lambda, and detecting the surface defect-free condition under a 100W incandescent lamp by using a 6-time magnifier to finish the processing of the surface of the ridge.
Furthermore, the lean against body I is a glass square brick with the precision error of a 90-degree angle within 10 ″.
Further, the processing step of the right-angle surface comprises the following steps:
taking a backrest II, wiping the large surface of the backrest II and the surface where the ridge edge is located respectively with a mixed reagent of ethanol and diethyl ether, and optically gluing the large surface and the surface together to ensure that the processed side surface on the ridge edge blank is vertical; then, the leaning body II is optically glued on a tray;
and ii, uniformly placing the whole tray in a two-axis machine after the tray is fully placed, and grinding and polishing the roof prism rough material from top to bottom to process the right-angle surface.
Further, the step of processing the ridge surface comprises:
wiping one side face with a mixed reagent of ethanol and ether, adhering the side face to the large face of a leaning body II with optical glue, coating protective paint after the glue is dried, and then adhering the leaning body II on a tray;
II, after the trays are uniformly placed, grinding the roof prism blanks from top to bottom in a biaxial machine in a whole disc mode, controlling the grinding size error within 0.005mm, controlling the surface flatness to be-0.001 mm, grinding until a ground surface is free of scratches when observed under a magnifying glass of 6 times, and then polishing the ground surface to obtain a first roof surface;
wiping the first roof surface with a mixed reagent of ethanol and ether, coating a protective paint, soaking in an acetone reagent for 30 minutes, and cleaning with ultrasonic waves;
iv, then another ridge surface is machined in the same way.
Furthermore, the lean against body II is a glass isosceles right triangular prism with the angle errors of 45 degrees and 90 degrees within 10 ″.
Furthermore, the tray is a glass disc, the surface flatness of the tray is less than 1/10 lambda, the surface smoothness is 40-60, and the parallelism precision error of the upper surface and the lower surface is within 5 ″.
Further, the surface flatness of the right-angle surface is less than 1/4 lambda, and the surface smoothness is 20-40; the surface flatness of the ridge surface is less than 1/8 lambda, and the surface finish is 20-40; the angle errors of 45 degrees and 90 degrees of the finished roof prism are controlled within 5 ″.
Further, in the polishing process, a polishing disc is manufactured by adopting asphalt and rosin according to the proportion of 1: 1.7, and the polishing solution is cerium oxide solution with the ratio of cerium oxide to pure water being 1: 100.
Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) according to the processing technology of the roof prism, provided by the invention, the side surface, the right-angle surface and the roof surface of the roof prism are processed in a mode of finish machining in sequence, each surface is processed in place at one time, compared with the traditional production mode of firstly processing the shape of the roof prism and then polishing each surface, the production procedure is reduced by nearly half, and the efficiency is improved by about one time; meanwhile, the superposition of manual operation errors in two procedures of grinding and polishing is reduced, and the product precision is greatly improved;
(2) according to the processing technology of the roof prism, two side surfaces and the surface where the roof ridge is located are precisely machined before the right-angle surface and the roof ridge surface are machined, the two groups of surfaces are used for positioning after the precision of the two groups of surfaces is guaranteed, the right-angle surface and the roof ridge surface are further machined, the precision of 45-degree and 90-degree angles of the right-angle surface, the roof ridge surface and the roof ridge prism is greatly improved, the precision error of the machined roof ridge angle of the roof ridge prism can be within 1 ″, the angle deviation of emergent light after the light is turned to the roof ridge prism is within 30 ″, and the qualification rate is over 90%;
(3) according to the processing technology of the roof prism, the surface of the roof ridge is processed by means of the roof prism blank which is positioned by the aid of the matching of the leaning body I and the tray, the operation is simple and easy to control, the processing precision of the surface of the roof ridge is high, the processing precision of the right-angle surface and the machining precision of the roof ridge surface are further guaranteed, and the angle precision and the tower difference precision of the produced finished roof prism are high;
(4) according to the processing technology of the roof prism, on the basis of the processed surface of the roof prism, roof prism blanks are positioned by means of the cooperation of the leaning body II and the processed surface of the roof prism, and are matched with the tray for grinding and polishing, so that the precision control is high, and the 45-degree angle precision of a roof prism product and the perpendicularity of two right-angle surfaces are effectively guaranteed;
(5) according to the processing technology of the roof prism, on the basis that two side faces, the surface where the roof prism is located and two right-angle faces are finely processed, roof prism blanks are glued and positioned with the side faces by means of the leaning body II and are matched with the tray for grinding and polishing, precision control is high, the surface type precision of the processed roof face is high, and the precision error of the roof angle can reach within 1 ″;
(6) according to the processing technology of the roof prism, 60 roof prism finished products are produced in a single batch by means of the matched use of the tray, the leaning body I and the leaning body II, and the production efficiency is further improved.
Drawings
FIG. 1 is a schematic structural view of a roof prism to be machined;
FIG. 2 is a schematic view of a workpiece wobble plate state when machining a side surface of a roof prism;
FIG. 3 is a schematic view of a state in which a workpiece is fixed on a backrest body I;
FIG. 4 is a schematic diagram of the state of optical cement between a workpiece and a rest body II when a right-angle surface of a roof prism is machined;
FIG. 5 is a schematic diagram of the state of the optical cement between the workpiece and the rest body II when the ridge surface of the ridge prism is machined;
FIG. 6 is a schematic diagram of a roof prism processing procedure for a roof surface;
in the drawings: 1. a roof prism; 11. a side surface; 12. a right-angled surface; 13. a roof surface; 14. ridge edges; 2. a tray; 3. a backrest body I; 4. a backrest body II.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
Example 1
In this embodiment, a processing process of a roof prism is specially used for processing and producing a roof prism 1 as shown in fig. 1, where the roof prism 1 is an isosceles right-angle roof prism, and includes two side surfaces 11, two perpendicular right-angle surfaces 12 and two perpendicular roof surfaces 13, and the two roof surfaces 13 intersect to form a roof ridge edge 14. The production and processing steps are as follows:
s01, taking roof prism blanks, and grinding to process two side surfaces 11; the roof prism rough material is an isosceles right-angle prism;
s02, grinding and polishing the large surface of the roof prism blank to process the surface of the roof ridge edge 14, namely the large surface of the processed roof prism blank;
s03, positioning by using the surface of the ridge 14, grinding and polishing to form two right-angle surfaces 12;
and S04, positioning by using the side surface 11, and grinding and polishing to form two ridge surfaces 13.
In the roof prism processing technology in the embodiment, the side surface 11, the right-angle surface 12 and the roof surface 13 of the roof prism 1 are processed in a sequentially fine machining mode, each surface is processed in place at one time, compared with a traditional production mode that the shape of the roof prism is processed firstly and then each surface is polished, the production process is reduced by nearly half, and the efficiency is improved by about one time; meanwhile, the superposition of manual operation errors in two procedures of grinding and polishing is reduced, and the product precision is greatly improved; in addition, the two side surfaces 11 and the ridge surface 14 are precisely machined before the right-angle surface 12 and the ridge surface 13 are machined, the two sets of surfaces are used for positioning after the precision of the two sets of surfaces is guaranteed, and the right-angle surface 12 and the ridge surface 13 are further machined, so that the precision of 45-degree and 90-degree angles of the right-angle surface 12, the ridge surface 13 and the ridge prism 1 is greatly improved.
In the embodiment, the surface flatness of the right-angle surface 12 is controlled to be less than 1/4 lambda, and the surface smoothness is controlled to be 20-40; the surface flatness of the ridge surface 13 is less than 1/8 lambda, and the surface finish is 20-40; the angle errors of 45 degrees and 90 degrees of the finished roof prism 1 are controlled within 5 ″. The precision error of the ridge angle of the processed ridge prism 1 can reach within 1 ″, the angle deviation of emergent light after the light is turned is within 30 ″, and the qualification rate exceeds 90%.
Example 2
The basic steps of the processing technology of the roof prism in the embodiment are the same as those of the embodiment 1, and the difference and the improvement are that the processing steps of the side surface 11 are as follows:
wiping one side face of the roof prism rough material with an acetone reagent, then placing the side face of the roof prism rough material on a tray 2 downwards, dripping optical glue on the lower end of the roof prism rough material for fixing, standing for about 10 minutes until the glue is dried, and coating protective paint on the periphery of the roof prism rough material to prevent the roof prism rough material from falling off from the tray 2 due to the fact that water permeates into the ground of the roof prism rough material in the subsequent processing process; in the embodiment, the diameter of the tray 2 is 300mm, and about 100 pieces of roof prism blanks can be placed in each tray;
and ii, as shown in fig. 2, after the trays 2 are uniformly placed, the whole tray is placed in a biaxial machine, the side surface of the roof prism rough material, which faces upwards, is ground from top to bottom, the abrasion is 0.05mm, and the sand hole granularity ground to the surface is uniformly observed under a magnifying lens of 6 times without scratches.
After one side surface 11 is processed, the ridge prism rough material is knocked off from the tray 2 by a wooden hammer, and is put into an acetone reagent to be soaked for about 30 minutes, so that optical glue on the surface of the ridge prism rough material is cleaned, and then a second side surface 11 is processed in the same way.
By adopting the method in the embodiment to process the side surface 11 of the roof prism 1, about 100 pieces are processed at one time, the processing efficiency is high, the processing precision and consistency are high, and a foundation is laid for the production quality of the roof prism 1 finished product.
In the embodiment, the tray 2 is a glass disc, the surface flatness of the glass disc is less than 1/10 lambda, the surface smoothness is 40-60, and the accuracy error of the parallelism of the upper surface and the lower surface is within 5 ″, so that the processing error is reduced by increasing the accuracy of the tray 2.
Example 3
The basic steps of the processing technology of the roof prism in this embodiment are the same as those of embodiments 1 and 2, and the difference and improvement is that the processing steps of the surface of the roof prism 14 are as follows:
as shown in fig. 3, preparing a rest body i 3 with a length × width × height of 75mm × 25mm × 50mm, adhering one of the side surfaces 11 to the side surface of the rest body i 3 with optical cement, ensuring that the large surface of the ridge prism blank faces upwards horizontally and is higher than the upper end of the rest body i 3, fixing 6 pieces on each rest body i 3, and then fixing the lower end of the rest body i 3 to the tray 2 with optical cement, and fixing 10 pieces on each tray;
ii, after the trays 2 are uniformly placed, the whole tray is placed in a biaxial machine, the large surface of the roof prism rough material is ground from top to bottom, the grinding size error is controlled within 0.005mm, the surface flatness is controlled within 0.001mm, and the grain size of the ground sand holes on the surface is uniformly observed under a magnifying lens of 6 times without scratches;
iii, polishing the ground surface for about two hours until the surface flatness is less than 1/8 lambda, and detecting the surface defect-free condition under a 100W incandescent lamp by using a 6-time magnifier to finish the processing of the surface of the ridge edge 14; in the polishing process, a polishing disc is manufactured by asphalt and rosin according to the proportion of 1: 1.7, and the polishing solution is cerium oxide solution with the ratio of cerium oxide to pure water being 1: 100, so that the polished surface smoothness can be effectively improved; after the processing is finished, the surface is wiped clean by using an ethanol ether mixed reagent, then protective paint is coated for protection, and then the cleaning procedure is carried out to clean the optical cement on the side surface 11.
In this embodiment, the backrest i 3 is a glass square brick, the precision error of the 90 ° angle is within 10 ″, and the machining precision of the surface where the ridge 14 is located can be effectively ensured by using the backrest in cooperation with the tray 2.
By adopting the method in the embodiment to process the surface of the ridge 14, 60 pieces can be processed in each plate, and the production efficiency is high; with the help of leaning on body I3 and tray 2 cooperation location roof ridge prism woollen, easy operation easily controls for the machining precision of the place face of roof ridge edge 14 is higher, and then has guaranteed the machining precision of right angle face 12 and roof ridge face 13, and the angle precision and the poor precision of tower of finished product roof ridge prism of output are higher.
Example 4
The basic steps of the processing technology of the roof prism in the embodiment are the same as those of the embodiments 1 to 3, and the difference and the improvement are that the processing steps of the right-angle surface 12 are as follows:
preparing a leaning body II 4, wherein the leaning body II 4 is a glass isosceles right-angle triangular prism with the angle errors of 45 degrees and 90 degrees within 10', the length of the glass isosceles right-angle triangular prism is 75mm, the length of a right-angle side of the glass isosceles right-angle triangular prism is 20mm, the large surface of the leaning body II 4 and the surface where the ridge edge 14 is located are respectively wiped by mixed reagent of ethanol and ethyl ether, the mixed reagent and the large surface and the surface are optically glued together, the processed side surface 11 on the ridge prism blank is ensured to be vertical, and 3 ridge prism blanks are fixed on each leaning body II 4; then, the rest bodies II 4 are glued on the tray 2, and 20 rest bodies II 4 are placed on each tray;
and ii, after the trays 2 are uniformly placed in a full tray, the whole tray is placed in a biaxial machine, the roof prism rough materials are ground and polished from top to bottom until the surface flatness is less than 1/4 lambda, the surface finish degree is 20-40, and the right-angle surface 12 is processed. The two right-angle surfaces 12 are processed in the same mode, each right-angle surface 12 is soaked and cleaned by an acetone reagent after being processed, and the next production procedure is carried out after the right-angle surfaces are wiped clean.
The right-angle surface 12 can be processed by the method, 60 pieces can be processed each time, and the production efficiency is high. In the processing technology of the roof prism in the embodiment, on the basis of the processed surface of the roof ridge 14, the roof prism blank is positioned by means of the matching of the leaning body II 4 and the processed surface of the roof ridge 14 with the optical cement, and is matched with the tray 2 for grinding and polishing, so that the precision control is high, and the 45-degree angle precision of the roof prism 1 product and the verticality of the two right-angle surfaces 12 are effectively guaranteed.
Example 5
The basic steps of the processing technology of the roof prism in this embodiment are the same as those in embodiments 1 to 4, and the difference and improvement is that, as shown in fig. 5 and 6, the processing steps of the roof surface 13 are as follows:
wiping one side surface 11 with a mixed reagent of ethanol and ether, then adhering the side surface to a large surface of a leaning body II 4 by optical cement, ensuring that an edge at the intersection of the processed side surface 11 on the ridge prism blank and a ridge edge 14 is horizontally upward, coating protective paint after the glue is dried, and then adhering the leaning body II 4 on a tray 2; 3 roof prism blanks are fixed on each backrest II 4, and 20 backrest II 4 are placed in each disc;
ii, after the trays 2 are uniformly placed, the whole tray is placed in a biaxial machine to grind the roof prism blanks from top to bottom until the central line position of the surface where the roof ridge 14 is located is reached, the grinding size error is controlled within 0.005mm, the surface flatness is controlled within-0.001 mm, the grinding is carried out until the ground surface is observed under a 6-time magnifying glass without scratches, then the ground surface is polished until the surface flatness is less than 1/8 lambda and the surface finish degree is 20-40, so that a first roof surface 13 is processed;
wiping the first roof surface 13 with a mixed reagent of ethanol and ether, coating a protective paint, knocking a lower disc with a mallet, placing the lower disc in an acetone reagent, soaking for 30 minutes, and cleaning with ultrasonic waves;
iv, and then another land 13 is machined in the same manner.
The ridge surface 13 can be processed by the method, 60 pieces can be processed each time, and the production efficiency is high; on the basis that two side surfaces 11, the surface where the ridge edge 14 is located and two right-angle surfaces 12 are finished, roof prism blanks are glued and positioned with the side surfaces 11 by means of the leaning body II 4 and are matched with the tray 2 for grinding and polishing, precision control is high, the surface type precision of the machined ridge surface 13 is high, and the accuracy error of the ridge angle can reach within 1 ″.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (8)
1. The roof prism processing technology is characterized in that each surface of the roof prism is processed in place once, and the steps comprise:
s01, taking roof prism blanks, and grinding and processing two side surfaces (11) firstly;
s02, grinding and polishing the large surface of the roof prism blank to process the surface of the roof ridge edge (14);
s03, positioning by using the surface of the ridge (14), grinding and polishing to form two right-angle surfaces (12);
s04, positioning by using the side surface (11), and grinding and polishing to process two ridge surfaces (13);
the roof prism rough material is an isosceles right-angle prism;
the surface flatness of the right-angle surface (12) is less than 1/4 lambda, and the surface smoothness is 20-40; the surface flatness of the ridge surface (13) is less than 1/8 lambda, and the surface smoothness is 20-40; the errors of 45-degree and 90-degree angles of the finished roof prism (1) are controlled within 5';
the processing steps of the right-angle surface (12) comprise:
i, taking a leaning body II (4), wiping the large surface of the leaning body II (4) and the surface of the ridge edge (14) by using a mixed reagent of ethanol and ether respectively, and optically gluing the large surface and the surface together to ensure that the processed side surface (11) on the ridge prism blank is vertical; then, the backrest II (4) is optically glued on the tray (2);
and ii, uniformly placing the whole tray in a two-axis machine after the tray (2) is fully placed, and grinding and polishing the roof prism rough material from top to bottom to process the right-angle surface (12).
2. Roof prism processing procedure according to claim 1, characterized in that the processing step of the side surface (11) comprises:
wiping one side surface of the roof prism rough material with an acetone reagent, then placing the roof prism rough material on a tray (2), fixing the roof prism rough material with optical glue, and smearing protective paint around the roof prism rough material after the glue is dried;
and ii, uniformly placing the whole tray in a biaxial machine after fully placing the tray (2), grinding the side surface of the roof prism blank facing upwards from top to bottom until the grain size of the sand holes on the surface is uniformly observed under a 6-time magnifier without scratches.
3. The roof prism processing technique according to claim 1, wherein the processing step of the surface of the roof ridge (14) comprises:
i, adhering one side face (11) to the side face of the leaning body I (3) by using optical glue, ensuring that the large face of the ridge prism rough material is horizontally upward and higher than the upper end of the leaning body I (3), and then fixing the lower end of the leaning body I (3) on the tray (2) by using the optical glue;
ii, after the tray (2) is uniformly placed, the whole tray is placed in a biaxial machine, the large surface of the roof prism rough material is ground from top to bottom, the grinding size error is controlled within 0.005mm, the surface flatness is controlled within 0.001mm, and the grain size of the sand holes on the ground surface is uniformly observed under a 6-time magnifier without scratches;
and iii, polishing the ground surface until the surface flatness is less than 1/8 lambda, and detecting the surface defect-free condition under a 100W incandescent lamp by using a 6-time magnifier to finish the processing of the surface of the ridge edge (14).
4. The roof prism processing process according to claim 3, wherein: the leaning body I (3) is a glass square brick with the precision error of a 90-degree angle within 10 ″.
5. The roof prism processing technique according to claim 1, wherein the processing step of the roof surface (13) includes:
wiping one side face (11) with a mixed reagent of ethanol and ether, adhering the side face to the large face of a leaning body II (4) by using optical glue, coating protective paint after the glue is dried, and then, carrying out optical glue on the leaning body II (4) on a tray (2);
ii, after the trays (2) are uniformly placed, the whole tray is placed in a biaxial machine to grind the roof prism blanks from top to bottom, the grinding size error is controlled within 0.005mm, the surface flatness is controlled within-0.001 mm, grinding is carried out until a ground surface is observed under a magnifying lens of 6 times without scratches, and then the ground surface is polished to obtain a first roof surface (13);
wiping the first roof surface (13) with a mixed reagent of ethanol and ether, coating a protective paint, soaking in an acetone reagent for 30 minutes, and cleaning with ultrasonic waves;
iv, and then another ridge surface (13) is machined in the same way.
6. The roof prism processing process according to any one of claims 1 to 5, wherein: the lean against body II (4) is a glass isosceles right triangular prism with the angle errors of 45 degrees and 90 degrees within 10 ″.
7. The roof prism processing process according to any one of claims 1 to 5, wherein: the tray (2) is a glass disc, the surface flatness of the glass disc is less than 1/10 lambda, the surface smoothness is 40-60, and the parallelism precision error of the upper surface and the lower surface is within 5 ″.
8. The roof prism processing process according to any one of claims 1 to 5, wherein: in the polishing process, a polishing disc is manufactured by asphalt and rosin according to the proportion of 1: 1.7, and the polishing solution is cerium oxide solution with the ratio of cerium oxide to purified water being 1: 100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387962.6A CN111069981B (en) | 2019-12-30 | 2019-12-30 | Roof prism processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911387962.6A CN111069981B (en) | 2019-12-30 | 2019-12-30 | Roof prism processing technology |
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| CN112091730A (en) * | 2020-07-06 | 2020-12-18 | 江苏普世祥光电技术有限公司 | Processing technology of mobile phone prism |
| CN111958839A (en) * | 2020-08-27 | 2020-11-20 | 马鞍山市江南光学有限公司 | Complete set of tool for machining ridge prism |
| CN111958396A (en) * | 2020-08-27 | 2020-11-20 | 马鞍山市江南光学有限公司 | Roof prism processing technology |
| CN112936615A (en) * | 2021-04-14 | 2021-06-11 | 苏州海创光学科技有限公司 | Processing method of zinc selenide lens |
| CN114345658A (en) * | 2021-11-04 | 2022-04-15 | 丹阳市金太阳光电科技有限公司 | Gluing process of optical lens |
| CN114619297B (en) * | 2022-04-21 | 2023-11-03 | 马鞍山市江南光学有限公司 | Processing technology of right-angle prism side sag 10' |
| CN115847230B (en) * | 2022-10-20 | 2023-11-21 | 张家港市光学仪器有限公司 | Grinding processing method of roof prism |
| CN116460667B (en) * | 2022-12-30 | 2023-11-07 | 北京创思工贸有限公司 | Processing method of calcium fluoride optical part |
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