CN201124329Y - Off-axis aspheric optical coldworking machine tool - Google Patents
Off-axis aspheric optical coldworking machine tool Download PDFInfo
- Publication number
- CN201124329Y CN201124329Y CNU2007200948029U CN200720094802U CN201124329Y CN 201124329 Y CN201124329 Y CN 201124329Y CN U2007200948029 U CNU2007200948029 U CN U2007200948029U CN 200720094802 U CN200720094802 U CN 200720094802U CN 201124329 Y CN201124329 Y CN 201124329Y
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- China
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- counterdie
- patrix
- main shaft
- optical element
- crank
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- Expired - Lifetime
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Abstract
The utility model provides an off-axis non-spherical optical cold processing machine tool which belongs to machine tool and related to the technology field of optical cold processing. The off-axis non-spherical optical cold processing machine tool comprises a lower die crank disc, a lower die connection rod, a lower die swing rod, an off-axis non-spherical optical element, a lower die shaft, a lower die workbench, a polishing grinding disc, an upper die swing arm, an upper die spindle, an upper die spindle transmission crank swing rod mechanism, etc., wherein the lower die crank is connected with the upper die connection rod through a T-shaped groove bolt and a hinge; the lower die connection rod is connected with the lower die swing rod through a hinge; the lower die swing rod is connected with the lower die spindle through a key; the lower die spindle is fixedly connected with the lower die workbench; the off-axis non-spherical optical element to be processed is attached on the lower die workbench; the upper die spindle transmission crank connection rod mechanism is connected with the upper die spindle through a key; the upper die spindle is connected with the upper die swing arm through a spin; and the polishing grinding disc arranged on the tail end of the swing rod of the upper die swing arm is in sliding contact with the optical element to be processed. The machine tool can be used for processing off-axis non-spherical surface.
Description
Technical field
The utility model belongs to the device of a kind of off-axis aspheric surface optical element processing that relates in the optics cold processing technique field.
Background technology
Optical aspherical surface has effects such as aberration correction, simplification system, raising optical system precision as a kind of optical element.Particularly the off-axis aspheric surface speculum has no central obscuration, can improve picture element, increases advantages such as the relative aperture of system and simplied system structure, is irreplaceable in modernized optical systems such as large telescope, space camera, military surveillance.Therefore the off-axis aspheric surface optical element to the big visual field of heavy caliber has proposed the more applications requirement in the contemporary optics system.Because the symmetry axis of off-axis aspheric surface outside bore, is asymmetric in its bore scope therefore, this has brought difficulty for the processing and the detection of off-axis aspheric surface.At present, the processing of off-axis aspheric surface optical element mainly contains traditional process technology and modern processing, the tradition process technology mainly is to finish processing to the off-axis aspheric surface optical element by senior technician's hand grinding, this method is bigger to people's dependence, working (machining) efficiency is low, poor repeatability can't satisfy the quality and the quantitative requirement of off-axis aspheric surface; Modern processing mainly is to finish processing to various aspherical optical elements by high precision computation machine Digit Control Machine Tool, exists problems such as equipment complexity, cost height, efficient are low man-hour but add at off-axis aspheric surface.
The prior art the most approaching with the utility model is three polisher lappers of JM030.3 type that Nanjing Lisheng Optics Machinery Co., Ltd. produces, and its structure comprises counterdie drive motors 1 as shown in Figure 1, counterdie decelerator 2, driving wheel 3, belt 4, driven pulley 5, counterdie main shaft 6, counterdie workbench 7, processed optical element 8, polishing grinding pan 9, patrix swing arm 10, patrix main shaft 11, patrix spindle drive crank-rocker mechanism (part in the frame of broken lines) 12.
Counterdie drive motors 1 drives counterdie main shaft 6 by counterdie decelerator 2 and belt drive system (driving wheel 3, belt 4, driven pulley 5) and rotates, thereby drives counterdie workbench 7 and 8 rotations of processed optical element; Patrix spindle drive crank-rocker mechanism 12 drives patrix main shaft 11 and drives patrix swing arm 10 reciprocally swingings, thereby drives polishing grinding pan 9 with respect to processed optical element 8 reciprocally swingings; Add reach processing man-hour by the reciprocally swinging of the polishing grinding pan 9 that is rotatably assorted continuously of processed optical element 8 purpose.
But above-mentioned machining tool only is applicable to the element that the symmetrical gyroaxis of processing overlaps with geometirc symmetry axis.Because the symmetry axis of off-axis aspheric surface be asymmetric in its bore scope, so the lathe of this kind motion mode is not suitable for the processing of off-axis aspheric surface optical element outside bore.
Summary of the invention
In order to overcome the defective that prior art exists, the purpose of this utility model is traditional off-axis aspheric surface optical element process technology and modern technologies are combined, and designs off-axis aspheric surface machining tool a kind of with low cost, suitable.
The technical problems to be solved in the utility model is: a kind of off-axis aspheric surface optical cold machining machine tool is provided.
The technical scheme of technical solution problem comprises counterdie drive motors 13 as shown in Figure 2, counterdie decelerator 14, counterdie crank disc 15, counterdie connecting rod 16, ball-type hinge 17, counterdie fork 18, counterdie main shaft 19, counterdie workbench 20, off-axis aspheric surface optical element 21, polishing grinding pan 22, patrix swing arm 23, patrix main shaft 24, patrix spindle drive crank-rocker mechanism (part in the frame of broken lines) 25.
Operation principle explanation: add man-hour, the optical axis that the counterdie main shaft 19 and the pivot of counterdie workbench 20 is decided to be off-axis aspheric surface optical element 21, from the axle amount, off-axis aspheric surface optical element 21 is positioned counterdie workbench 20 corresponding positions according to off-axis aspheric surface optical element 21; Drive counterdie main shaft 19 by counterdie drive motors 13 by counterdie decelerator 14 and counterdie crank rocking beam transmission system (counterdie crank disc 15, counterdie connecting rod 16, ball-type hinge 17, counterdie fork 18) and decide the angle reciprocally swinging, decide the angle reciprocally swinging with off-axis aspheric surface optical element 21 thereby drive counterdie workbench 20; Patrix spindle drive crank-rocker mechanism 25 drives patrix main shaft 24 little amplitude of oscillation reciprocally swingings, thereby drives the little amplitude of oscillation reciprocally swinging of patrix swing arm 23 and polishing grinding pan 22; The little amplitude of oscillation reciprocally swinging with respect to off-axis aspheric surface optical element 21 of polishing grinding pan 22 cooperates the angle reciprocally swinging of deciding of off-axis aspheric surface optical element 21 to reach the purpose of repairing the band polishing, as shown in Figure 3.
When the different endless belt of needs polishings off-axis aspheric surface optical element 21, the length that only needs to change the length L of crank length E1 in the counterdie crank disc 15 and patrix swing arm 23 promptly can realize the throwing of repairing of different endless belt; Length by the crank length E1 in the counterdie crank disc 15 changes the size that off-axis aspheric surface element 21 is decided angle reciprocally swinging pivot angle; The length of the length L by patrix swing arm 23 change the position of polishing grinding pan 22 at off-axis aspheric surface optical element 21; By changing the amplitude of oscillation that crank length E2 in the patrix spindle drive crank-rocker mechanism 25 changes polishing grinding pan 22 with respect to the little amplitude of oscillation reciprocally swinging of off-axis aspheric surface optical element 21.
Good effect of the present utility model: what the drive unit that the utility model has improved existing lathe counterdie main shaft had been realized counterdie main shaft 19 back and forth decides angle swinging, realizes that the band of repairing of off-axis aspheric surface optical element 21 polishes thereby cooperate the little amplitude of oscillation of polishing grinding pan 22 to swing by the reciprocally swinging that counterdie main shaft 19 is driven processed aspherical optical element 21.The utility model is simple in structure, and is economical and practical, solved the off-axis aspheric surface optical element add can't rotate man-hour, the problem of swing etc., thereby effectively raise the working (machining) efficiency and the precision of off-axis aspheric surface optical element.
Description of drawings
Fig. 1 is the structural representation of prior art.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is an operation principle description references schematic diagram of the present utility model.
The specific embodiment
The utility model is implemented by structure shown in Figure 2.The specific embodiment is as follows:
According to the maximum pendulum angle of counterdie workbench 20 needs swing, the condition that the crank in the counterdie main shaft 19 driving crank swing-bar mechanisms exists, minimum transmission angle γ
MinAnd the concrete size of each member of coefficient of travel speed variation K design counterdie crank-rocker mechanism, comprise the maximum length E1 of counterdie crank E1
Max, counterdie connecting rod 16 length, the length of counterdie fork 18, counterdie crank disc 15 centres of gyration with counterdie main shaft 19 centre of gyration distances, specific requirement is:
Minimum transmission angle γ
Min〉=40 °;
Coefficient of travel speed variation K ≈ 1;
The maximum length E1 of counterdie crank E1
MaxBe minimum of a value in above four sizes.
Maximum length E1 according to counterdie crank E1
MaxSize determine the size of counterdie crank disc 15 diameters to have T-slot on the counterdie crank disc 15, be connected and can freely turn round with counterdie connecting rod 16 with ball-type hinge 17 by the T-slot bolt, the T-slot bolt can be free to slide in T type groove to adjust the length of E1.Counterdie connecting rod 16 is connected by ball-type hinge 17 with counterdie fork 18 and can freely turns round.Each member all adopts 45 in the counterdie crank-rocker mechanism
#Steel, counterdie connecting rod 16 and counterdie fork 18 theoretical size machining accuracy≤0.01mm.
For key is connected, drives counterdie main shaft 19 and decide the angle reciprocally swinging between counterdie fork 18 and the counterdie main shaft 19.Counterdie main shaft 19 adopts 45
#The steel modulation treatment, axial precision≤0.02mm, radial accuracy≤0.02mm.The counterdie main shaft is installed in two bearing blocks, and following spherical bearing adopts the circular cone roller bearing, and deep groove ball bearing is adopted on top, to guarantee wobble accuracy.
Be connected for Morse's taper 3# transit joint between counterdie main shaft 19 and the counterdie workbench 20, be convenient to dismounting.Counterdie workbench 20 adopts ZL12, looks concrete processing work difference and design different operating platform diameter dimension.
According to the concrete size of each member in the maximum pendulum angle design patrix spindle drive crank-rocker mechanism 25 of patrix main shaft 24, method is identical with counterdie spindle drive toggle.Patrix spindle drive crank-rocker mechanism 25 adopts threephase asynchronous machine to connect the turbine and worm decelerator and drives.
For key is connected, drives patrix main shaft 24 and decide the angle reciprocally swinging between patrix spindle drive crank-rocker mechanism 25 and the patrix main shaft 24.Patrix main shaft 24 adopts 45
#The steel modulation treatment, axial precision≤0.02mm, radial accuracy≤0.02mm.The patrix main shaft is installed in two bearing blocks, and following spherical bearing adopts the circular cone roller bearing, and deep groove ball bearing is adopted on top, to guarantee wobble accuracy.Patrix main shaft 24 maximum pendulum angles are 90 °.
Patrix main shaft 24 adopts bearing pin to be connected with patrix swing arm 23, drives patrix swing arm 23 reciprocally swingings, and the patrix swing arm adopts double-layer pipe can stretch to adjust length.
The complete machine lathe bed is welded by channel-section steel, steel plate, and lathe bed the place ahead is a sliding door, is convenient to change the size of E1 and E2.Remainder is an enclosed construction.Lathe various piece rational deployment makes the machine volume minimum under the prerequisite of assurance lathe stable operation.
Claims (1)
1, a kind of off-axis aspheric surface optical cold machining machine tool comprises counterdie drive motors, counterdie decelerator, counterdie main shaft, counterdie workbench, polishing grinding pan, patrix swing arm, patrix main shaft, patrix spindle drive crank-rocker mechanism; It is characterized in that also comprising counterdie crank disc (15), counterdie connecting rod (16), ball-type hinge (17), counterdie fork (18), off-axis aspheric surface optical element (21); Counterdie drive motors (13), counterdie decelerator (14), counterdie crank disc (15), counterdie connecting rod (16), ball-type hinge (17), counterdie fork (18) have constituted the driving crank swing-bar mechanism of counterdie main shaft (19); In this mechanism, the axle of counterdie drive motors (13) is connected with the power shaft rigidity of counterdie decelerator (14), the output shaft of counterdie decelerator (14) is connected with the rotating shaft of counterdie crank disc (15), counterdie crank disc (15) is connected with the end of hinge with counterdie connecting rod (16) by T type slot bolt, the other end of counterdie connecting rod (16) is connected with an end of counterdie fork (18) by ball-type hinge (17), the other end of counterdie fork (18) is connected by key with counterdie main shaft (19), the two ends of counterdie main shaft (19) are installed in the bearing block that bearing is housed, its upper end is connected with counterdie workbench (20), processed off-axis aspheric surface optical element (21) places on the counterdie workbench (20), and both paste solid; Patrix spindle drive toggle (25) is connected with patrix main shaft (24) by key, the two ends of patrix main shaft (24) are installed in the bearing block that bearing is housed, its upper end is connected with patrix swing arm (23) by bearing pin, the fork level of patrix swing arm (23) is stretched to the top of processed off-axis aspheric surface optical element (21), fork end in patrix swing arm (23) is equipped with polishing grinding pan (22), the machined surface sliding-contact of the working face of polishing grinding pan (22) and processed off-axis aspheric surface optical element (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200948029U CN201124329Y (en) | 2007-12-19 | 2007-12-19 | Off-axis aspheric optical coldworking machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200948029U CN201124329Y (en) | 2007-12-19 | 2007-12-19 | Off-axis aspheric optical coldworking machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201124329Y true CN201124329Y (en) | 2008-10-01 |
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ID=39997745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200948029U Expired - Lifetime CN201124329Y (en) | 2007-12-19 | 2007-12-19 | Off-axis aspheric optical coldworking machine tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN201124329Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100519072C (en) * | 2007-12-20 | 2009-07-29 | 中国科学院长春光学精密机械与物理研究所 | Off-axis aspheric surface optical cold machining tool |
| CN102019573A (en) * | 2010-10-12 | 2011-04-20 | 大连大显精密轴有限公司 | Automatic polishing mechanism for windshield wiper balls |
| CN103495744A (en) * | 2013-10-23 | 2014-01-08 | 吉林大学 | Dynamic-balance ultra-precision turning machine tool capable of turning off-axis optical curved surfaces |
| CN108789019A (en) * | 2018-06-20 | 2018-11-13 | 中国科学院上海光学精密机械研究所 | Five-bar mechanism for non-spherical element polishing |
| CN111360637A (en) * | 2018-12-25 | 2020-07-03 | 中国科学院长春光学精密机械与物理研究所 | Double-station processing device for optical elements |
-
2007
- 2007-12-19 CN CNU2007200948029U patent/CN201124329Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100519072C (en) * | 2007-12-20 | 2009-07-29 | 中国科学院长春光学精密机械与物理研究所 | Off-axis aspheric surface optical cold machining tool |
| CN102019573A (en) * | 2010-10-12 | 2011-04-20 | 大连大显精密轴有限公司 | Automatic polishing mechanism for windshield wiper balls |
| CN102019573B (en) * | 2010-10-12 | 2012-06-06 | 大连大显精密轴有限公司 | Automatic polishing mechanism for windshield wiper balls |
| CN103495744A (en) * | 2013-10-23 | 2014-01-08 | 吉林大学 | Dynamic-balance ultra-precision turning machine tool capable of turning off-axis optical curved surfaces |
| CN103495744B (en) * | 2013-10-23 | 2015-08-12 | 吉林大学 | From axle optical surface dynamic balancing ultra-precise cutting lathe |
| CN108789019A (en) * | 2018-06-20 | 2018-11-13 | 中国科学院上海光学精密机械研究所 | Five-bar mechanism for non-spherical element polishing |
| CN111360637A (en) * | 2018-12-25 | 2020-07-03 | 中国科学院长春光学精密机械与物理研究所 | Double-station processing device for optical elements |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071219 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071219 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |