CN117484289A - Processing technology of right-angle roof prism tower difference 1 - Google Patents
Processing technology of right-angle roof prism tower difference 1 Download PDFInfo
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- CN117484289A CN117484289A CN202311767231.0A CN202311767231A CN117484289A CN 117484289 A CN117484289 A CN 117484289A CN 202311767231 A CN202311767231 A CN 202311767231A CN 117484289 A CN117484289 A CN 117484289A
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- 238000012545 processing Methods 0.000 title claims abstract description 56
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 239000011449 brick Substances 0.000 claims abstract description 38
- 239000011521 glass Substances 0.000 claims abstract description 25
- 239000003292 glue Substances 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 238000003754 machining Methods 0.000 claims abstract description 18
- 239000004568 cement Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 52
- 241001631030 Explorator Species 0.000 claims description 31
- 238000005498 polishing Methods 0.000 claims description 29
- 239000000758 substrate Substances 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 230000004075 alteration Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 238000007514 turning Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
Abstract
The invention discloses a processing technology of a right-angle roof prism tower difference 1', which comprises the following steps: firstly, rough machining is carried out on a blank of the right-angle roof prism, then the first positioning tool 1 is utilized to glue the light of the right-angle roof prism to a 90-degree square brick leaning body, and two right-angle faces of the right-angle roof prism are machined; then, the second positioning tool 2 is used for processing two ridge surfaces of the right-angle ridge prism by using the light glue of the right-angle ridge prism on a 45-degree leaning body; processing two side surfaces of the right-angle roof prism optical cement on a glass backing plate; and finally, finishing two ridge surfaces of the right-angle ridge prism, wherein the tower difference of the obtained product is within +/-1 ', and the double image difference is within +/-10'.
Description
Technical Field
The invention relates to the technical field of optical prism processing, in particular to a processing technology of a right-angle roof prism tower difference 1'.
Background
The prism is a prism body composed of optical materials, the refraction surface and the reflection surface of all the prisms are collectively called a working surface, the intersection line of the two working surfaces is called a prism, and the section perpendicular to the prism is called a main section. Prisms play a number of different roles in optics, and combinations of prisms can be used as beam splitters, polarizers, and the like.
The prism has high precision requirements on the surfaces of the working surfaces and angle precision requirements between the working surfaces, and the two aspects directly determine the quality of the prism. At present, the prism is generally produced in batch at one time, so that parameters (such as smoothness, flatness, angle and the like) of working faces of the prism are guaranteed to meet the requirement of design precision, and the method is a core problem which needs to be solved by each process technical scheme.
The existing angle precision control method of the roof prism in optical processing generally comprises the following two steps:
firstly, forming a mirror plate on a polishing machine by using tools such as a cuboid, a 90-degree square body, a light adhesive backing plate and the like, and grinding and polishing by controlling a parallel method; the method can not accurately control the technical requirements (the angle of the ridge angle is more than or equal to 1', and the tower difference is more than or equal to 1') of the ridge prism in the processing;
the second method is as follows: firstly, processing a blank into a cube light blank by using a method for processing a cube, after the cube light blank is detected to be qualified, cutting the cube light blank into a shape of a roof prism by using a precision cutting machine, and finally, continuously processing a face 1 of the roof prism, wherein the qualified working face is easily caused to generate defects in cutting, the quality of parts is influenced, and the precision of the tower difference is not less than 1' can not be accurately controlled;
the two processing methods have the characteristic of large tower difference error, and are not suitable for processing the high-precision calibration prism.
Disclosure of Invention
The invention aims to provide a processing technology of a right-angle roof prism tower difference 1' so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: firstly, rough machining is carried out on a blank of the right-angle roof prism, then the first positioning tool 1 is utilized to glue the light of the right-angle roof prism to a 90-degree square brick leaning body, and two right-angle faces of the right-angle roof prism are machined;
then, the second positioning tool 2 is used for enabling the right-angle roof prism to be optically glued on a 45-degree leaning body, firstly, two roof faces of the right-angle roof prism are processed, and finish machining is carried out on one roof face;
processing two side surfaces of the right-angle roof prism optical cement on a glass backing plate;
then the 90-degree square brick leaning body is utilized to finish the other roof of the right-angle roof prism;
thereby ensuring that the tower difference of the obtained product is within +/-1 ', and the double image difference is within +/-10'.
Preferably, the blank rough machining process of the right-angle roof prism comprises the following steps:
s1, roughly grinding and forming a blank with a machining allowance of 0.4mm on each surface according to the requirements of a drawing;
s2, taking any side surface as an upper disc surface, dispensing 417 glue on a glass backing plate, processing according to the process size, and high polishing to directly lower the disc, wherein the surface aperture is required to be-0.2lambda, and the surface is free of sand holes;
s3, the polished side surface is glued on a glass backing plate by 417 glue, a rough aperture is needed to be seen, the rough aperture is processed according to the process size, the error of the parallelism is smaller than 0.002 mm within the range of phi 300 mm, the surface is 0.001 mm within the range of phi 300 mm, the rough aperture is-0.2 lambda, and the surface has no sand holes.
Preferably, the processing technology of the two right angle faces of the right angle roof prism is as follows:
s1, taking any side surface as an upper disc surface, baking a right-angle ridge prism optical cement on a 90-degree square brick leaning body by using a first positioning tool for 4 hours, cooling, coating protective cement, and processing a certain right-angle surface by using the 90-degree leaning body optical cement on a glass backing plate;
s2, grinding according to the process size, controlling the parallelism within the range of phi 300 mm to be less than 0.002 mm, and controlling the plane within the range of phi 300 mm to be 0.001 mm;
s3, controlling the parallelism in the polishing range within the phi 300 mm and within the 0.002 mm, detecting by using a plane interferometer, and processing the aperture and the surface finish according to the requirements of a drawing;
s4, turning over the square brick leaning body and processing the other right-angle surface by the same method.
Preferably, the two ridge surface machining processes of the right-angle ridge prism and the finish machining process of one ridge surface are as follows:
s1, taking any side surface as an upper disc surface, utilizing a second positioning tool to enable the right-angle ridge prism to be optically glued on a chord surface of a 45-degree leaning body, ensuring that two processed right-angle surfaces and a reference surface of the second positioning tool face an upper rough aperture during optical gluing, then coating protective glue, and enabling the leaning body to be optically glued on a glass backing plate to process a first ridge surface;
s2, grinding according to the process size, wherein the parallelism is less than 0.002 mm in the phi 300 mm range, the surface is 0.001 mm in the phi 300 mm range, and the surface is directly cut off by high polishing;
s3, putting the plate on the plate by the same method, processing a second roof surface, grinding, high polishing, and then polishing the roof surface, wherein the parallelism is detected by a plane interferometer during polishing, the thickness is 0.001 mm within the range of phi 300 mm, and the surface aperture and the smoothness are processed according to the drawing requirements.
Preferably, the processing technology of the two side surfaces of the right-angle roof prism is as follows:
s1, using any side surface as an upper disc surface, processing the other side surface on a glass backing plate by 417 glue seal glue, wherein when in frosting, the parallelism is less than 0.005 mm within a phi 300 mm range, the surface is-0.003 mm within the phi 300 mm range, the size is processed according to the technological requirement, and the surface roughness is processed according to the drawing requirement;
and S2, processing the other side surface by using the same process, wherein the size and the roughness are processed according to the requirements of a drawing.
Preferably, the process of finishing the other roof of the right-angle roof prism is as follows:
s1, placing polished roof surface light glue on a 90-degree rectangular brick leaning body, positioning a roof to be processed, namely, baking for 4 hours, cooling, coating protective glue, placing the 90-degree rectangular brick leaning body light glue on a glass backing plate, and finishing the roof to be processed;
s2, processing according to the process size during sanding. The error of the parallelism is smaller than 0.001 mm in the range of phi 300 mm, and the plane is 0.001 mm in the range of phi 300 mm;
s3, firstly, high polishing and then fine polishing; detecting parallelism by using a plane interferometer, wherein the error is smaller than 0.001 mm in the phi 300 mm range, ensuring that the double aberration is smaller than +/-10 ', the tower difference is smaller than +/-1', and processing the surface aperture and the finish according to the drawing requirements;
s4, chamfering the lower disc, cleaning and checking.
Preferably, the first positioning tool 1 includes a first substrate 11, a first rectangular explorator 12 is fixed on the first substrate 11, an L-shaped explorator 13 is fixed on a side surface of the first rectangular explorator 12, a 90-degree square brick leaning body 14 is installed on the L-shaped explorator 13, and two sides of the 90-degree square brick leaning body 14 can be simultaneously used for polishing blanks of two right-angle roof prisms.
Preferably, the second positioning fixture 2 includes a second substrate 21, two positioning explorators 22 are fixed on the second substrate 21, the two positioning explorators 22 are oppositely arranged on the second substrate 21, a right-angle surface contacts with the second substrate 21, a V-shaped positioning groove 23 is formed by inclined surfaces of the two positioning explorators, a supporting block 24 is fixed beside one of the positioning explorators 22, and a roof positioning module 25 is installed on the supporting block 24;
the ridge surface positioning module 25 comprises a second rectangular profiling 251 and a 45-degree profiling 252, the end part of the second rectangular profiling 251 is fixed on the supporting block 24, the whole is of an inclined design, the right-angle surface of the 45-degree profiling 252 is fixed on the side surface of the second rectangular profiling 251, and a right-angle positioning groove 26 is formed between the second rectangular profiling 251 and the 45-degree profiling 252.
Compared with the prior art, the invention has the beneficial effects that:
the special first positioning tool is matched with the 90-degree square brick leaning body, and the second positioning tool is matched with the 45-degree leaning body, so that the processing technology of the right-angle surface and the ridge surface is simplified, the operation is convenient, the dish forming rate is high, the qualification rate is high, and the production efficiency and the yield are effectively improved;
the common 45-degree leaning body and 90-degree square brick leaning body are utilized to process the roof, so that the tower difference of the product is within +/-1 ', the double image difference is within +/-10', and the symmetry degree of the roof prism is ensured to be +/-0.05 mm.
Drawings
FIG. 1 is a schematic structural view of a first positioning tool of the present invention;
FIG. 2 is a schematic view of a 90 degree square brick support of the present invention mounted on a first positioning fixture;
FIG. 3 is a schematic diagram of a rectangular roof prism using a first positioning tooling photoresist;
FIG. 4 is a schematic view of the optical cement of the right angle roof prism of the present invention on a 90 degree square brick support;
FIG. 5 is a schematic structural diagram of a second positioning tool according to the present invention;
FIG. 6 is a schematic structural diagram of a second positioning tool according to the present invention;
FIG. 7 is a schematic diagram of a rectangular roof prism using a second positioning tooling photoresist;
FIG. 8 is a schematic view of the optical cement of the rectangular roof prism of the present invention on a 45 DEG support;
FIG. 9 is a schematic view of the construction of the present invention when machining the roof surface of a right angle roof prism;
FIG. 10 is a schematic view of another roof surface of a rectangular roof prism of the present invention;
FIG. 11 is a schematic diagram of the structure of the polished ridge surface gloss adhesive on the side surface of a 90 DEG rectangular brick leaning body;
fig. 12 is a schematic view of the structure of a right angle roof prism of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in the invention will be understood by those of ordinary skill in the art in a specific context.
Referring to fig. 1-12, the present invention provides a technical solution: a processing technology of a right-angle roof prism tower difference 1' firstly carries out rough processing on a blank of the right-angle roof prism, wherein the rough processing technology of the blank is as follows:
s1, roughly grinding and forming a blank with a machining allowance of 0.4mm on each surface according to the requirements of a drawing;
s2, taking any side surface as an upper disc surface, dispensing 417 glue on a glass backing plate, processing according to the process size, and high polishing to directly lower the disc, wherein the surface aperture is required to be-0.2lambda, and the surface is free of sand holes;
s3, the polished side surface is glued on a glass backing plate by 417 glue, a rough aperture is needed to be seen, the rough aperture is processed according to the process size, the error of the parallelism is smaller than 0.002 mm within the range of phi 300 mm, the surface is 0.001 mm within the range of phi 300 mm, the rough aperture is-0.2 lambda, and the surface has no sand holes.
The blank of the right-angle roof prism is glued to a 90-degree square brick leaning body by utilizing a first positioning tool 1 shown in figure 1, so as to process two right-angle faces of the right-angle roof prism,
the blank of two right-angle roof prisms which can be glued on each 90-degree square brick leaning body is shown in figure 3,
and then the 90-degree square brick leaning body shown in fig. 4 is glued to the glass backing plate, so that 40-50 pieces can be processed on the surface of the glass backing plate simultaneously, the processing operation is simple, and the plate forming rate is high;
the specific processing technology of the two right-angle faces is as follows:
s1, taking any side surface as an upper disc surface, baking a right-angle ridge prism optical cement on a 90-degree square brick leaning body by using a first positioning tool for 4 hours, cooling, coating protective cement, and processing a certain right-angle surface by using the 90-degree leaning body optical cement on a glass backing plate;
s2, grinding according to the process size, controlling the parallelism within the range of phi 300 mm to be less than 0.002 mm, and controlling the plane within the range of phi 300 mm to be 0.001 mm;
s3, controlling the parallelism in the polishing range within the phi 300 mm and within the 0.002 mm, detecting by using a plane interferometer, and processing the aperture and the surface finish according to the requirements of a drawing;
s4, turning over the square brick leaning body and processing the other right-angle surface by the same method.
And then the right-angle roof prism is glued on a 45-degree leaning body by using a second positioning tool 2 shown in figures 5 and 6,
then, the right angle surface light glue of the 45-degree leaning body shown in fig. 8 is arranged on a glass backing plate, two ridge surfaces of the right angle ridge prism are firstly processed, and one ridge surface is processed with finish machining, and the concrete process is as follows:
s1, taking any side surface as an upper disc surface, utilizing a second positioning tool to enable the right-angle ridge prism to be optically glued on a chord surface of a 45-degree leaning body, ensuring that two processed right-angle surfaces and a reference surface of the second positioning tool are faced with an upper rough aperture during optical gluing, then coating protective glue, and then enabling the leaning body to be optically glued on a glass backing plate to process a first ridge surface shown in FIG. 9;
s2, grinding according to the process size, wherein the parallelism is less than 0.002 mm in the phi 300 mm range, the surface is 0.001 mm in the phi 300 mm range, and the surface is directly cut off by high polishing;
s3, the second roof surface shown in fig. 10 is processed by the same method, the second roof surface is frosted, high polished and then polished, the parallelism is detected by a plane interferometer during fine polishing, the thickness is 0.001 mm in the range of phi 300 mm, and the surface aperture and the finish are processed according to the drawing requirements.
And then processing two side surfaces of the right-angle roof prism optical cement on the glass backing plate, wherein the specific processing technology of the two side surfaces is as follows:
s1, using any side surface as an upper disc surface, processing the other side surface on a glass backing plate by 417 glue seal glue, wherein when in frosting, the parallelism is less than 0.005 mm within a phi 300 mm range, the surface is-0.003 mm within the phi 300 mm range, the size is processed according to the technological requirement, and the surface roughness is processed according to the drawing requirement;
and S2, processing the other side surface by using the same process, wherein the size and the roughness are processed according to the requirements of a drawing.
And then the 90-degree square brick leaning body is utilized to finish the other roof surface of the right-angle roof prism, and the concrete process is as follows:
s1, polishing the polished ridge surface gloss adhesive on the side surface of a 90-degree rectangular brick leaning body, wherein each 90-degree rectangular brick leaning body can be provided with at least 4 right-angle ridge prisms by the gloss adhesive;
in the process of the photoresist, the aperture strips are necessarily seen when the roof to be processed is positioned,
baking for 4 hours after the photoresist, cooling, coating protective adhesive, and then polishing the 90-degree rectangular brick on a glass backing plate, and finishing the roof to be processed;
s2, processing according to the process size during sanding; the error of the parallelism is smaller than 0.001 mm in the range of phi 300 mm, and the plane is 0.001 mm in the range of phi 300 mm;
s3, firstly performing high polishing, then performing fine polishing, detecting parallelism by using a plane interferometer, ensuring that the error is less than 0.001 mm within the phi 300 mm range, ensuring that the double aberration is less than +/-10 ', ensuring that the tower difference is less than +/-1', and processing the surface aperture and the finish according to the drawing requirements;
s4, chamfering the lower plate, cleaning and checking to obtain the high-precision right-angle roof prism with the tower difference within +/-1 'and the double image difference within +/-10' as shown in figure 12.
In this embodiment, the first positioning fixture 1 includes a first substrate 11, a first rectangular explorator 12 is fixed on the first substrate 11, an L-shaped explorator 13 is fixed on a side surface of the first rectangular explorator 12, the 90 ° square brick leaning body is mounted on the L-shaped explorator 13, and two sides of the 90 ° square brick leaning body can be simultaneously glued with blanks of two right-angle roof prisms;
the blank of the right-angle roof prism is optically glued to a 90-degree square brick leaning body by using the first positioning tool 1, and the operation steps are as follows: the 90-degree square brick leaning body is fixed on the L-shaped leaning body 13 as shown in fig. 2, blanks of two right-angle roof prisms are respectively glued on two sides of the 90-degree square brick leaning body as shown in fig. 3, two right-angle faces of the right-angle roof prisms are respectively corresponding to the first rectangular leaning body 12 and the first base plate during glue gluing, the side faces of the right-angle roof prisms are attached to the side faces of the 90-degree square brick leaning body, and glue can be glued on the side faces to the 90-degree square brick leaning body.
In this embodiment, as shown in fig. 5 and 6, the structure of the second positioning fixture 2 includes a second substrate 21, two positioning explorators 22 are fixed on the second substrate 21, the two positioning explorators 22 are oppositely disposed on the second substrate 21, the right-angle surface contacts the second substrate 21, the inclined surfaces of the two positioning explorators form a V-shaped positioning groove 23, a supporting block 24 is fixed beside one of the positioning explorators 22, and a roof positioning module 25 is mounted on the supporting block 24;
the ridge surface positioning module 25 comprises a second rectangular profiling 251 and a 45-degree profiling 252, wherein the end part of the second rectangular profiling 251 is fixed on the supporting block 24, the whole is of an inclined design, the right-angle surface of the 45-degree profiling 252 is fixed on the side surface of the second rectangular profiling 251, and a right-angle positioning groove 26 is formed between the second rectangular profiling 251 and the 45-degree profiling 252;
the operation steps of the right-angle roof prism optical cement at 45 degrees by using the second positioning tool 2 are as follows: as shown in fig. 7, the 45 ° leaning body is placed at the V-shaped positioning groove 23, so that the chord surface thereof is attached to the bottom surface of the ridge surface positioning module 25, then the right angle of the right angle ridge prism is correspondingly clamped in the right angle positioning groove 26, and the side surface is attached to the chord surface of the 45 ° leaning body, during positioning, two processed right angle surfaces and the reference surface of the ridge surface positioning module 25 need to be ensured to face up the rough aperture, and the side surface optical cement of the right angle ridge prism can be glued on the chord surface of the 45 ° leaning body by using glue.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The processing technology of the right-angle roof prism tower difference 1' is characterized by comprising the following steps of: firstly, rough machining is carried out on a blank of the right-angle roof prism, then the right-angle roof prism is optically glued to a 90-degree square brick leaning body by utilizing a first positioning tool (1), and two right-angle faces of the right-angle roof prism are machined;
then, the second positioning tool (2) is used for enabling the right-angle roof prism to be optically glued on a 45-degree leaning body, two roof faces of the right-angle roof prism are firstly processed, and finish machining is carried out on one roof face;
processing two side surfaces of the right-angle roof prism optical cement on a glass backing plate;
then the 90-degree square brick leaning body is utilized to finish the other roof of the right-angle roof prism;
thereby ensuring that the tower difference of the obtained product is within +/-1 ', and the double image difference is within +/-10'.
2. The process for machining the right-angle roof prism tower difference 1' according to claim 1, wherein the rough machining process for the blank of the right-angle roof prism is as follows:
s1, roughly grinding and forming a blank with a machining allowance of 0.4mm on each surface according to the requirements of a drawing;
s2, taking any side surface as an upper disc surface, dispensing 417 glue on a glass backing plate, processing according to the process size, and high polishing to directly lower the disc, wherein the surface aperture is required to be-0.2lambda, and the surface is free of sand holes;
s3, the polished side surface is glued on a glass backing plate by 417 glue, a rough aperture is needed to be seen, the rough aperture is processed according to the process size, the error of the parallelism is smaller than 0.001 mm within the range of phi 300 mm, the surface is 0.001 mm within the range of phi 300 mm, the rough aperture is directly coiled under high polishing, the surface aperture is minus 0.2 lambda, and no sand holes exist on the surface.
3. The process for processing the tower difference 1' of the right-angle roof prism according to claim 1, wherein the two right-angle faces of the right-angle roof prism are processed by the following steps:
s1, taking any side surface as an upper disc surface, baking a right-angle ridge prism optical cement on a 90-degree square brick leaning body by using a first positioning tool for 4 hours, cooling, coating protective cement, and processing a certain right-angle surface by using the 90-degree leaning body optical cement on a glass backing plate;
s2, grinding according to the process size, controlling the parallelism within the range of phi 300 mm to be less than 0.002 mm, and controlling the plane within the range of phi 300 mm to be 0.001 mm;
s3, controlling the parallelism in the polishing range within the phi 300 mm and within the 0.002 mm, detecting by using a plane interferometer, and processing the aperture and the surface finish according to the requirements of a drawing;
s4, turning over the square brick leaning body and processing the other right-angle surface by the same method.
4. The process for machining a right angle roof prism tower difference 1' according to claim 1, wherein the process for machining two roof surfaces of the right angle roof prism and the finish machining process of one roof surface are as follows:
s1, taking any side surface as an upper disc surface, utilizing a second positioning tool to enable the right-angle ridge prism to be optically glued on a chord surface of a 45-degree leaning body, ensuring that two processed right-angle surfaces and a reference surface of the second positioning tool face an upper rough aperture during optical gluing, then coating protective glue, and enabling the leaning body to be optically glued on a glass backing plate to process a first ridge surface;
s2, grinding according to the process size, wherein the parallelism is less than 0.002 mm in the phi 300 mm range, the surface is 0.001 mm in the phi 300 mm range, and the surface is directly cut off by high polishing;
s3, putting the plate on the plate by the same method, processing a second roof surface, grinding, high polishing, and then polishing the roof surface, wherein the parallelism is detected by a plane interferometer during polishing, the thickness is 0.001 mm within the range of phi 300 mm, and the surface aperture and the smoothness are processed according to the drawing requirements.
5. The process for processing the tower difference 1' of the right-angle roof prism according to claim 1, wherein the process for processing two side surfaces of the right-angle roof prism is as follows:
s1, using any side surface as an upper disc surface, processing the other side surface on a glass backing plate by 417 glue seal glue, wherein when in frosting, the parallelism is less than 0.005 mm within a phi 300 mm range, the surface is-0.003 mm within the phi 300 mm range, the size is processed according to the technological requirement, and the surface roughness is processed according to the drawing requirement;
and S2, processing the other side surface by using the same process, wherein the size and the roughness are processed according to the requirements of a drawing.
6. The process for finishing a difference 1' between right angle roof prisms according to claim 1, wherein the process for finishing the other roof surface of the right angle roof prism comprises:
s1, placing polished roof surface gloss adhesive on a 90-degree rectangular brick leaning body, positioning a roof to be processed, ensuring that aperture stripes are seen, baking for 4 hours, cooling, coating protective adhesive, placing the 90-degree rectangular brick leaning body gloss adhesive on a glass backing plate, and finishing the roof to be processed;
s2, processing according to the process size during sanding; the error of the parallelism is smaller than 0.001 mm in the range of phi 300 mm, and the plane is 0.001 mm in the range of phi 300 mm;
s3, firstly, high polishing and then fine polishing; detecting parallelism by using a plane interferometer, wherein the error is smaller than 0.001 mm in the phi 300 mm range, ensuring that the double aberration is smaller than +/-10 ', the tower difference is smaller than +/-1', and processing the surface aperture and the finish according to the drawing requirements;
s4, chamfering the lower disc, cleaning and checking.
7. The process for manufacturing the right-angle roof prism tower difference 1' according to claim 1, wherein the process comprises the following steps of: the first positioning tool (1) comprises a first substrate (11), a first rectangular explorator (12) is fixed on the first substrate (11), an L-shaped explorator (13) is fixed on the side face of the first rectangular explorator (12), a 90-degree square brick leaning body is installed on the L-shaped explorator (13), and two sides of the 90-degree square brick leaning body can be simultaneously used for polishing blanks of two right-angle roof prisms.
8. The process for manufacturing the right-angle roof prism tower difference 1' according to claim 1, wherein the process comprises the following steps of: the second positioning tool (2) comprises a second substrate (21), two positioning explorators (22) are fixed on the second substrate (21), the two positioning explorators (22) are oppositely arranged on the second substrate (21), right-angle faces are in contact with the second substrate (21), inclined faces of the two positioning explorators form a V-shaped positioning groove (23), a supporting block (24) is fixed beside one positioning explorator (22), and a roof positioning module (25) is arranged on the supporting block (24);
the ridge surface positioning module (25) comprises a second rectangular explorator (251) and a 45-degree explorator (252), the end part of the second rectangular explorator (251) is fixed on the supporting block (24), the whole body is of an inclined design, the right-angle surface of the 45-degree explorator (252) is fixed on the side surface of the second rectangular explorator (251), and a right-angle positioning groove (26) is formed between the second rectangular explorator (251) and the 45-degree explorator (252).
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| CN202311767231.0A CN117484289A (en) | 2023-12-21 | 2023-12-21 | Processing technology of right-angle roof prism tower difference 1 |
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| CN202311767231.0A CN117484289A (en) | 2023-12-21 | 2023-12-21 | Processing technology of right-angle roof prism tower difference 1 |
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| CN202311767231.0A Pending CN117484289A (en) | 2023-12-21 | 2023-12-21 | Processing technology of right-angle roof prism tower difference 1 |
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