CN109676469A - A kind of optical element polishing tool and polishing method - Google Patents
A kind of optical element polishing tool and polishing method Download PDFInfo
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- CN109676469A CN109676469A CN201910092105.7A CN201910092105A CN109676469A CN 109676469 A CN109676469 A CN 109676469A CN 201910092105 A CN201910092105 A CN 201910092105A CN 109676469 A CN109676469 A CN 109676469A
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- Prior art keywords
- mill
- polishing
- pressing ring
- optical element
- boss
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Classifications
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The present invention discloses a kind of optical element polishing tool, including connecting rod, mill, pressing ring and polishing film layer, the upper end of connecting rod is connect with polishing mechanism, the lower end of connecting rod and the top of mill connect, the central axis of connecting rod is overlapped with mill center line, downwardly convex boss is arranged in the bottom centre of mill, polishing film layer is coated on boss, pressing ring center opens up centre bore, pressing ring connect with mill and passes through the boss for having coated polishing film layer from the centre bore of pressing ring, and polished film lamination is close to be attached on boss by pressing ring.Optical element polishing tool of the present invention is not necessarily to install the splicing block of secondary process, effectively improve processing efficiency, the motion range of mill expands to the perimeter of element, mill will not topple, so that element fringe region is consistent with intermediate region processing situation, the edge effects problem such as turned-down edge or alice face shape is effectively eliminated, realizes the high-precision processing of the unified face shape of optical element.
Description
Technical field
The present invention relates to optical element processing technique field more particularly to a kind of optical element polishing tool and polishing sides
Method.
Background technique
As device of high power laser develops to enlargement, high power output direction, to optical element machining accuracy and add
The requirement of work efficiency rate is higher and higher.Computer controlled optical surfacing forming technique (CCOS) is with computer, accurate measurement, new work
Skill new material etc. it is polytechnic development and continuous self-perfection, become optical glass device high-precision processing mainstream skill
Art, but the edge effects problem such as turned-down edge or alice face shape is easy to produce in its polishing processing, influence the processing of element
Precision and processing efficiency.
The method that tradition eliminates edge effect is outer ring splicing method, i.e., in one circle of component ambient bonding to be processed and element
Then the splicing block of identical material carries out whole polishing to element and splicing block, removes splicing block after polishing.This method
Element machining area effectively is extended, mill is steadily contacted with element surface always during the polishing process, can solve mill
There is the problem of pressure is unevenly distributed when revealing side, avoids the occurrence of the edge effect problem of turned-down edge face shape.But this method pair
The splicing flatness of splicing block and element proposes very high requirement, and splicing difficulty is big, influences processing efficiency, and spell removing
After connecing block, element itself is easily deformed, and influences the final precision of element.
Summary of the invention
The technical problems to be solved by the invention and the technical assignment of proposition are improved to the prior art, and one kind is provided
Optical element polishing tool solves optical element in current technology and splices method using outer ring in polishing, and splicing block splices difficulty
Greatly, the problem of influencing processing efficiency, influencing element machining accuracy.
In order to solve the above technical problems, the technical scheme is that
A kind of optical element polishing tool, including connecting rod, mill, pressing ring and polishing film layer, the connecting rod it is upper
End is connect with polishing mechanism, and the lower end of connecting rod and the top of mill connect, in the central axis and mill of the connecting rod
Heart line is overlapped, and downwardly convex boss is arranged in the bottom centre of the mill, and the polishing film layer is coated on boss, institute
The pressing ring center stated opens up centre bore, and pressing ring connect with mill and makes to have coated the boss of polishing film layer from the centre bore of pressing ring
It passes through, polished film lamination is close to be attached on boss by pressing ring.Optical element polishing tool of the present invention leads to film layer is polished
Crossing pressing ring and being fixed on mill becomes an entirety, and the central axis of connecting rod is overlapped with mill center line, so that
When the part for exposing element edge is less than the radius of mill, the center line of mill keeps hanging down mill with the surface of element always
Directly, mill is effectively avoided to be in the presence of toppling, so that the range of work of mill can be to element surface edge outer expandable one
The range of a boss radius, and assuring element fringe region and intermediate region processing situation are consistent, eliminate intermediate region with
Fringe region processes the inconsistency of iteration, without the splicing in one circle of component ambient bonding material identical as element to be processed
Block is not necessarily to auxiliary mould, improves processing efficiency, effectively eliminates the edge effects problem such as turned-down edge or alice face shape, realizes optics member
The high-precision of the unified face shape of part is processed.
Further, the polishing film layer with a thickness of 0.2~1mm.
Further, the diameter of the centre bore is 0.4~2mm bigger than the diameter of boss, facilitates installation, disassembly, is convenient for
The boss for having coated polishing film layer is passed through from the centre bore of pressing ring, and it is convex to ensure that polishing film layer can be reliably fixed to by pressing ring
On platform, so that polishing, film layer is stable to be tightly attached on boss, is avoided polishing film layer from sliding, is ensured polishing quality.
Further, the thickness of the pressing ring is less than the height of boss, and pressing ring contact element surface is avoided to cause element
Surface scratching.
Further, the thickness of the pressing ring is 1~2mm smaller than the height of boss.
Further, the outer diameter of the pressing ring and the outer diameter of mill are identical, easy to loading and unloading, and structural stability is good.
Further, connected unit is arranged in the top center of the mill, and connected unit is connected through a screw thread with connecting rod.
Further, through-hole has been opened up on the mill, and screw hole corresponding with through-hole, spiral shell have been opened up on the pressing ring
Pressing ring is fixed on mill by nail across through-hole and being screwed onto screw hole.
A kind of polishing method using above-mentioned optical element polishing tool, includes the following steps:
A, the extension process extended on the outside of element surface edge is carried out to the original face graphic data of element, obtained for instructing
The face shape growth data of processing carries out the extension of face shape, face shape height and its phase of face shape extended area by equivalent filling mode
Adjacent element edge surface shape height is identical；
B, according to face shape growth data, nc program is generated；
C, optical element polishing tool is connected in numerical control polishing mechanism；
D, numerical control polishing mechanism executes nc program, completes element processing.
The central axis and mill of the connecting rod for the optical element polishing tool that polishing method of the present invention is utilized
Center line be overlapped, thus mill expose element edge part be less than mill radius when, the center line of mill always with member
The surface of part keeps vertical, effectively avoids mill from being in the presence of toppling, so that the range of work of mill can be to element surface
Edge outer expandable a certain distance, assuring element fringe region is consistent with intermediate region processing situation, eliminates intermediate region
With the inconsistency of fringe region processing iteration, it is not necessarily to auxiliary mould, processing efficiency is improved, effectively eliminates turned-down edge or alice face shape
Equal edge effects problem realizes the high-precision processing of the unified face shape of optical element.
Further, the face shape growth data is big to the radius that the range of extension on the outside of element surface edge is boss
Small, the surface of center line and element that mill still can be ensured when mill is worked into beyond element surface edge certain distance is protected
It holds vertically, pressure is unevenly distributed the edge effect problem for leading to turned-down edge face shape when avoiding the occurrence of mill dew side, without to be added
The splicing block of one identical as the element material of circle of component ambient bonding of work, it is high in machining efficiency, precision is high.
Compared with prior art, the invention has the advantages that:
Optical element polishing tool structure of the present invention is simple, compact, and traditional outer ring is replaced to splice method, without peace
The splicing block for filling secondary process, effectively improves processing efficiency, the motion range of mill expands to the perimeter of element, mill
It will not topple, so that element fringe region is consistent with intermediate region processing situation, eliminate intermediate region and fringe region
The inconsistency for processing iteration effectively eliminates the edge effects problem such as turned-down edge or alice face shape, realizes the unified face of optical element
The high-precision of shape is processed；
Polishing method of the present invention, optical element polishing tool motion range not only cover optical element surface, also
Optical element perimeter is extended to, so that optic periphery region is processed iteration situation with intermediate region and reaches unanimity, thus
The edge effects problem such as turned-down edge or alice face shape is effectively eliminated, the high-precision processing of the unified face shape of optical element is realized, simplifies
Manufacturing procedure improves processing efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of optical element polishing tool；
Fig. 2 is the structural schematic diagram of connecting rod；
Fig. 3 is the structural schematic diagram of mill；
Fig. 4 is the structural schematic diagram of pressing ring；
The schematic diagram of the section structure that Fig. 5 is mill, pressing ring is connected with polishing film layer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of optical element polishing tool disclosed by the embodiments of the present invention replaces traditional outer ring to splice method, without to
The splicing block of one circle of the component ambient bonding material identical as element of processing, is not necessarily to auxiliary mould, improves processing efficiency, buffer
The motion range of tool expands to the perimeter of element, and polishing tool will not topple so that element fringe region with
Intermediate region processing situation is consistent, effectively eliminates the edge effects problem such as turned-down edge or alice face shape, realizes that optical element is unified
The high-precision of face shape is processed.
As shown in Figures 1 to 5, a kind of optical element polishing tool mainly includes connecting rod 1, mill 2, pressing ring 4 and polishing
The upper end of film layer 5, the connecting rod 1 is connect with polishing mechanism, and the lower end of connecting rod 1 is connect with the top side detachable of mill 2,
The central axis of the connecting rod 1 is overlapped with 2 center line of mill, and the bottom centre of the mill 2 is arranged downwardly convex
Circular boss 23, the polishing film layer 5 are coated on boss 23, and 4 center of pressing ring has opened up centre bore 42, center
Hole 42 is circular hole, and the generally circular plate of pressing ring 4, pressing ring 4 is connected on mill 2 from the installation of the bottom of mill 2, and is wrapped
The boss 23 for having covered polishing film layer 5 is passed through from the centre bore 42 of pressing ring 4, and pressing ring 4 is compressed film layer 5 is polished, so that polishing film layer 5
It is tightly attached on boss 23, polishing film layer 5 is close to bottom plane and the side of boss 23.
Connecting rod 1, mill 2, pressing ring 4 and polishing film layer 5 connect into an entirety, when mill exposes element edge to be processed
When distance is less than boss radius, it is ensured that mill center line remains vertical with element surface to be processed, and mill will not be sent out
Life is toppled, so that element fringe region is consistent with intermediate region processing situation, effectively eliminates turned-down edge or the alice face edge Xing Deng effect
Answer problem.
In the present embodiment, through-hole 22 along the vertical direction has been opened up on mill 2, has opened up on the pressing ring 4 and has been led to
The corresponding screw hole 41 in hole 22, screw 3 pass through through-hole 22 and are screwed onto screw hole 41 and pressing ring 4 is fixed on mill 2；And through-hole
22 are evenly spaced on along the circumferential direction of 2 center line of mill, and through-hole 22 is identical as the quantity of screw hole 41, and through-hole 22 and screw hole 41 are one by one
It is corresponding, it is preferred that through-hole 22, screw hole 41 open up 3~6 respectively.
Polish film layer 5 with a thickness of 0.2~1mm, the diameter of centre bore 42 is greater than the diameter of boss 23, in this embodiment,
The diameter of centre bore 42 is 0.4~2mm bigger than the diameter of boss 23, and more preferably, the diameter of centre bore 42 is more straight than boss 23
Twice of big polishing 5 thickness of film layer of diameter improves polishing film layer so that pressing ring 4 is reliably pressed on film layer 5 is polished on boss 23
5 are attached to the stability on 23 surface of boss, avoid polishing film layer 5 be in the presence of sliding, ensure polishing process reliability and
Quality of finish.
And in order to avoid 4 contact optical element of pressing ring causes optical element surface to scratch, the thickness of pressing ring 4 is less than boss
23 height, in the present embodiment, the thickness of pressing ring 4 are 1~2mm smaller than the height of boss 23, and the outer diameter and mill of pressing ring 4
2 outer diameter is identical, facilitates assembly and disassembly, and overall structure stability is good.
1 upper and lower side of connecting rod is respectively provided with external screw thread, and connecting rod 1 is spirally connected by the external screw thread of upper end with polishing mechanism,
Connected unit 21, the external thread bolt connection of connected unit 21 and 1 lower end of connecting rod, 21 side wall table of connected unit is arranged in the top center of mill 2
The two sides in face offer waist type groove, and the two sides on 1 surface of connecting rod also offer waist type groove, can easily be used using waist type groove
Tool carries out tightening assembly and disassembly.
Connecting rod 1, mill 2 are made of metal material, and can be stainless steel, aluminium alloy etc., other materials can also be used, protect
Hinder stable structure, machining accuracy is high, long service life；The pressing ring 4 is made of nonmetallic materials, can for nylon,
Polytetrafluoroethylene (PTFE) etc., being subject to can ensure and will not cause damage to optical element surface；It polishes film layer 5 and uses flexible material system
At, can for damping cloth or polyurethane material etc., it is ensured that can it is good to optical element carry out polishing operation.
Using the polishing method of above-mentioned optical element polishing tool, mainly include the following steps:
A, the extension process extended on the outside of element surface edge is carried out to the original face graphic data of element, obtained for instructing
The face shape growth data of processing, the range that the face shape growth data extends to element surface edge outside are the half of boss 23
Diameter size carries out the extension of face shape, the face shape height element edge surface adjacent thereto of face shape extended area by equivalent filling mode
Shape height is identical；
B, according to face shape growth data, nc program is generated；
C, optical element polishing tool is connected in numerical control polishing mechanism；
D, numerical control polishing mechanism executes nc program, completes element processing.
Polishing tool motion range not only covers optical element surface, also extends to optical element perimeter, makes optics
Element fringe region reaches unanimity with intermediate region processing iteration situation, to effectively eliminate turned-down edge or the alice face edge Xing Deng effect
Answer problem, realize the high-precision processing of the unified face shape of optical element, eliminate one circle of component ambient bonding to be processed with
The process of the splicing block of the identical material of element, effectively improves processing efficiency.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (10)
1. a kind of optical element polishing tool, which is characterized in that including connecting rod (1), mill (2), pressing ring (4) and polishing film layer
(5), the upper end of the connecting rod (1) is connect with polishing mechanism, and the lower end of connecting rod (1) is connect with the top of mill (2), institute
The central axis for the connecting rod (1) stated is overlapped with mill (2) center line, and bottom centre's setting of the mill (2) is downwardly convex
The boss (23) risen, the polishing film layer (5) are coated on boss (23), and the pressing ring (4) center opens up centre bore
(42), pressing ring (4) connect with mill (2) and makes to have coated the boss (23) of polishing film layer (5) from the centre bore of pressing ring (4)
(42) it passes through, pressing ring (4) will polish film layer (5) compression and be attached on boss (23).
2. optical element polishing tool according to claim 1, which is characterized in that the thickness of the polishing film layer (5)
For 0.2~1mm.
3. optical element polishing tool according to claim 2, which is characterized in that the diameter ratio of the centre bore (42)
Big 0.4~the 2mm of diameter of boss (23).
4. optical element polishing tool according to claim 1, which is characterized in that the thickness of the pressing ring (4) is less than
The height of boss (23).
5. optical element polishing tool according to claim 4, which is characterized in that the thickness of the pressing ring (4) is than convex
Small 1~the 2mm of height of platform (23).
6. optical element polishing tool according to claim 1, which is characterized in that the outer diameter and mill of the pressing ring (4)
The outer diameter of disk (2) is identical.
7. optical element polishing tool according to claim 1, which is characterized in that the top center of the mill (2)
It is arranged connected unit (21), connected unit (21) is connected through a screw thread with connecting rod (1).
8. optical element polishing tool according to any one of claims 1 to 7, which is characterized in that on the mill (2)
It has opened up through-hole (22), screw hole (41) corresponding with through-hole (22) has been opened up on the pressing ring (4), screw (3) passes through through-hole
(22) it and is screwed onto screw hole (41) pressing ring (4) is fixed on mill (2).
9. a kind of polishing method using optical element polishing tool described in claim 1, which is characterized in that including walking as follows
It is rapid:
A, the extension process extended on the outside of element surface edge is carried out to the original face graphic data of element, obtained for instructing processing
Face shape growth data, pass through equivalent filling mode and carry out the extension of face shape, the face shape height member adjacent thereto of face shape extended area
Part edge surface shape height is identical；
B, according to face shape growth data, nc program is generated；
C, optical element polishing tool is connected in numerical control polishing mechanism；
D, numerical control polishing mechanism executes nc program, completes element processing.
10. polishing method according to claim 9, which is characterized in that the face shape growth data is to element surface side
The range extended on the outside of edge is the radius size of boss (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910092105.7A CN109676469B (en) | 2019-01-30 | 2019-01-30 | Optical element polishing tool and polishing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910092105.7A CN109676469B (en) | 2019-01-30 | 2019-01-30 | Optical element polishing tool and polishing method |
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| Publication Number | Publication Date |
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| CN109676469A true CN109676469A (en) | 2019-04-26 |
| CN109676469B CN109676469B (en) | 2020-06-16 |
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| CN201910092105.7A Active CN109676469B (en) | 2019-01-30 | 2019-01-30 | Optical element polishing tool and polishing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536675A (en) * | 2020-12-03 | 2021-03-23 | 中国工程物理研究院激光聚变研究中心 | Splicing device for numerical control machining of square optical element |
| CN117467958A (en) * | 2023-12-28 | 2024-01-30 | 中国科学院长春光学精密机械与物理研究所 | Auxiliary device for magnetron sputtering technology of large-caliber optical element |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002066888A (en) * | 2000-08-31 | 2002-03-05 | Canon Inc | Polishing method |
| CN103302604A (en) * | 2013-06-25 | 2013-09-18 | 中国科学院光电技术研究所 | Polishing grinding disc for inhibiting full-band errors of optical surface |
| CN106475866A (en) * | 2016-10-26 | 2017-03-08 | 北京空间机电研究所 | A kind of large-diameter non-spherical reflecting mirror processing method eliminating edge effect |
| CN106736996A (en) * | 2017-03-29 | 2017-05-31 | 中国工程物理研究院激光聚变研究中心 | Polishing tool and non-spherical element external waviness minimizing technology |
| CN107756239A (en) * | 2017-11-30 | 2018-03-06 | 苏州陈那自动化技术有限公司 | A kind of face contacts burnishing device |
-
2019
- 2019-01-30 CN CN201910092105.7A patent/CN109676469B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002066888A (en) * | 2000-08-31 | 2002-03-05 | Canon Inc | Polishing method |
| CN103302604A (en) * | 2013-06-25 | 2013-09-18 | 中国科学院光电技术研究所 | Polishing grinding disc for inhibiting full-band errors of optical surface |
| CN106475866A (en) * | 2016-10-26 | 2017-03-08 | 北京空间机电研究所 | A kind of large-diameter non-spherical reflecting mirror processing method eliminating edge effect |
| CN106736996A (en) * | 2017-03-29 | 2017-05-31 | 中国工程物理研究院激光聚变研究中心 | Polishing tool and non-spherical element external waviness minimizing technology |
| CN107756239A (en) * | 2017-11-30 | 2018-03-06 | 苏州陈那自动化技术有限公司 | A kind of face contacts burnishing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536675A (en) * | 2020-12-03 | 2021-03-23 | 中国工程物理研究院激光聚变研究中心 | Splicing device for numerical control machining of square optical element |
| CN117467958A (en) * | 2023-12-28 | 2024-01-30 | 中国科学院长春光学精密机械与物理研究所 | Auxiliary device for magnetron sputtering technology of large-caliber optical element |
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| CN109676469B (en) | 2020-06-16 |
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