CN103111630B - Machining method of curved surface prism Fery prism - Google Patents
Machining method of curved surface prism Fery prism Download PDFInfo
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- CN103111630B CN103111630B CN201310033499.1A CN201310033499A CN103111630B CN 103111630 B CN103111630 B CN 103111630B CN 201310033499 A CN201310033499 A CN 201310033499A CN 103111630 B CN103111630 B CN 103111630B
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Abstract
The invention discloses a machining method of a curved surface prism Fery prism. The machining method of the curved surface prism Fery prism is characterized by comprising the following steps: machining an initial structure of the curved surface prism Fery prism; fixing the initial structure of the curved surface prism Fery prism on an optical machining center rotary platform, enabling an axial line of a cylinder to be coaxial with the optical machining center rotary platform, and machining a first curved surface on an end face of the cylinder, wherein an optical axis of the machined first curved surface of the curved surface prism Fery prism coincides with the axial line of the cylinder; designing and manufacturing a fixture, wherein the appearance of the fixture is cylindrical, the fixture is provided with a clamping groove which is cylindrical, an axial line of the clamping groove and an axial line of the fixture are arranged in an inclined mode, and the axial line of the fixture is enabled to coincide with an optical axis of a to-be-machined second curved surface of the curved surface prism Fery prism; clamping the initial structure of the curved surface prism fery prism on the fixture, wherein the initial structure of the curved surface prism Fery prism is provided with the machined first curved surface, enabling an axial line of a cylinder of the fixture to be coaxial with the optical machining center rotary platform, and machining the second curved surface on the end face of the cylinder of the initial structure of the curved surface prism Fery prism. The machining method of the curved surface prism Fery prism has the advantages of being high in machining precision, simple in structure, low in cost, high in efficiency, and prone to batch machining.
Description
Technical field
The invention belongs to optics manufacture and Ultraprecision Machining field, relate to a kind of processing method of curved surface prism, be specifically related to a kind of processing method of fery's prism.
Background technology
Along with the development of optical design theory and optical processing technology, free curved surface prism relies on its remarkable optical property, small volume structure compact and alleviate and the many merits such as require to be widely used multiple fields such as Helmet Mounted Display, entertainment video glasses, analog simulation training, operation to assembly precision.Therefore, the Study on manufacturing technology of curved surface prism is significant for national defence weapon equipment, medicine equipment etc.
The processing of optical surface prism at present mainly relies on diamond turning technology to realize, and its main method has two kinds: one is directly to carry out diamond turning method to realize prism processing; Another kind is to adopt diamond turning method to carry out the processing of free form surface core rod, then realizes the manufacture of whole prism by injection molding technology.Directly carry out diamond turning method to device location, being installed has proposed high requirement, so being repeatedly installed can be introduced the more serious error that is installed, thereby causes the relative position error on free curved surface prism surface; And injection molding method also exists same problem, in injection molding process, there is error in the position adjustment between core rod, equally also can cause processing the deviation of rear free form surface surface relative position.And diamond turning relies on multiple-freedom linking machine tool, therefore cost is higher.
For example, Chinese invention patent application CN 102139376A discloses a kind of method for processing free-form surface prism, need first the side of each prism to be initialized as to plane and carry out position adjustment to ensure each side according to datum plane, angle between curved surface need to adopt the milling moulding that is once installed of accurate gang tool or machining center, and the angle between each curved surface optical axis relies on the rotating shaft running accuracy of machining tool to ensure.Such processing mode seriously relies on accurate gang tool, it is larger that angle between the each optical axis of free curved surface prism is affected by rotary axis of machine tool corner accuracy, and the optical axis mismachining tolerance of the each curved surface prism of free curved surface prism of the multiple same structures of same lots processed is subject to machine tool system error effect to be difficult to more greatly ensure each curved surface prism workpiece optical axis angle error consistency.
In order to make spectrograph obtain the spectrum of " pure ", in 1910 annual fees, propose to replace plane prism with curved surface prism, result shows that this improvement has advantages of that a lot of plane prisms are incomparable.The features such as fery's prism is little with its absorption loss water, and astigmatism is larger are widely used in light spectrum image-forming optical system.Relative complex free curved surface prism, two curved surfaces of fery's prism are usually designed to sphere or the aspheric surface about optical axis with rotational symmetry structure, if high with existing method for processing free-form surface prism processing fery's prism cost, and be difficult to ensure the plain shaft precision of two curved surfaces, be therefore necessary to propose a kind of novel practical and be easy to realize the curved surface prism processing method of mass production
Summary of the invention
Goal of the invention of the present invention is to provide a kind of processing method that can realize without employing NC machining equipment high crudy and high efficiency curved surface prism fery's prism
To achieve the above object of the invention, the technical solution used in the present invention is:
A processing method for curved surface prism fery's prism, comprises the steps:
(1) initial configuration of processing curve prism fery's prism, described initial configuration is cylinder, the equal diameters of described cylinder diameter and first curved surface of fery's prism and two end faces are all the planes vertical with cylinder axle center line;
(2) initial configuration of fery's prism is fixed on optics machining center turntable, adjusting the location of workpiece makes its cylinder axial line coaxial with turntable, on cylinder end face, process first curved surface, first curved surface optical axis of the fery's prism of processing overlaps with cylinder axial line;
(3) according to the design of Structural Parameters of described fery's prism and make fixture, described fixture profile is cylinder and is provided with columniform holding tank, the axial line of holding tank and the axial line of fixture are obliquely installed, make by after the fery's prism initial configuration clamping after step (2) processing is in holding tank the optical axis coincidence of the axial line of fixture and fery's prism second curved surface to be processed;
(4) by the fery's prism initial configuration clamping after step (2) processing on fixture, first curved surface is placed downwards, fixture is fixed on optics machining center turntable, adjust chucking position and make its cylinder axial line coaxial with turntable, on the cylinder end face of fery's prism initial configuration, process second curved surface.
In technique scheme, when first curved surface of processing fery's prism, the axial line of turntable overlaps with fery's prism initial configuration cylinder axial line, and when second curved surface of processing, the axial line of turntable and the cylinder fixture axial line of clamping fery's prism overlap.
In technique scheme, the angle between the axial line of the holding tank on axial line and the fixture of the cylindrical fixture in described step (3) equals the angle of two curved surface optical axises of fery's prism.
Because technique scheme is used, the present invention compared with prior art has following advantages:
The present invention only need to go out fixture according to the design of Structural Parameters of fery's prism, can complete by framework on fine turning lathe the processing of fery's prism, and the plain shaft precision of two faces of fery's prism is easy to ensure by the precision of fixture, therefore, this invention has the advantages that crudy is high, simple in structure, cost is low, efficiency is high, has avoided adopting the inaccurate shortcoming of prior art processing optical axis included angle precision control.
Brief description of the drawings
Fig. 1 is the initial configuration schematic diagram of the curved surface prism fery's prism of processing in the embodiment of the present invention one;
Fig. 2 is first curved surface schematic diagram of processing on cylinder initial configuration in the embodiment of the present invention one;
Fig. 3 is cylinder fixture schematic diagram designed according to fery's prism structural parameters in the embodiment of the present invention one;
Fig. 4 is the clamping schematic diagram while processing second face of fery's prism in the embodiment of the present invention one;
Fig. 5 is the fery's prism schematic diagram being processed in the embodiment of the present invention one.
Wherein: 1, the cylinder axle center line of fery's prism initial configuration; 2, first curved surface; 3, the axial line of fixture; 4, holding tank axial line; 5, fixture; 6, second curved surface of fery's prism.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment mono-: a kind of processing method of curved surface prism fery's prism, comprises the steps:
(1) according to the initial configuration that needs processing curve prism fery's prism, calculate initial configuration, shown in Figure 1, its initial configuration is processed into cylinder, the equal diameters of this cylinder diameter and first face of fery's prism, two end faces are all the planes vertical with cylinder axle center line;
(2) fery's prism initial configuration is fixed on optics machining center turntable, shown in Figure 2, adjusting the location of workpiece makes the cylinder axle center line 1 of fery's prism initial configuration coaxial with turntable, on cylinder end face, process first curved surface 2, first face optical axis of the fery's prism of processing overlaps with cylinder axial line;
(3) according to the design of Structural Parameters of fery's prism and make fixture, shown in Figure 3, fixture 5 resemblances are cylinder and the axial line 3 to fery's prism clamping rear jig and the optical axis coincidence of second face of fery's prism, on fixture 5, column inclined hole forms holding tank, the optical axis coincidence of holding tank axial line 4 and second curved surface 6 of fery's prism, on cylinder gripper 5 and fixture, the angle of holding tank axial line 4 equals the optical axis included angle of two faces on fery's prism; Designing dexterously fixture is to realize the important technical of accurately controlling fery's prism optical axis included angle;
(4) shown in Figure 4, by the fery's prism clamping that processes first face on fixture, and be fixed on optics machining center turntable, adjusting the location of workpiece makes its cylinder axial line coaxial with turntable, on cylinder end face, process second curved surface, can obtain fery's prism as shown in Figure 5.
The processing method of curved surface prism fery's prism of the present invention, only need to go out fixture according to the design of Structural Parameters of fery's prism, can complete by framework on fine turning lathe the processing of fery's prism, and the plain shaft precision of two faces of fery's prism is easy to ensure by the precision of fixture, therefore, this invention has the advantages that crudy is high, simple in structure, cost is low, efficiency is high, has avoided adopting the inaccurate shortcoming of prior art processing optical axis included angle precision control.
Claims (2)
1. a processing method for curved surface prism fery's prism, is characterized in that, comprises the steps:
(1) initial configuration of processing curve prism fery's prism, described initial configuration is cylinder, the equal diameters of described cylinder diameter and first curved surface of fery's prism and two end faces are all the planes vertical with cylinder axle center line;
(2) initial configuration of fery's prism is fixed on optics machining center turntable, adjusting the location of workpiece makes its cylinder axial line coaxial with turntable, on cylinder end face, process first curved surface, first curved surface optical axis of the fery's prism of processing overlaps with cylinder axial line;
(3) according to the design of Structural Parameters of described fery's prism and make fixture, described fixture profile is cylinder and is provided with columniform holding tank, the axial line of holding tank and the axial line of fixture are obliquely installed, make by after the fery's prism initial configuration clamping after step (2) processing is in holding tank the optical axis coincidence of the axial line of fixture and fery's prism second curved surface to be processed;
(4) by the fery's prism initial configuration clamping after step (2) processing on fixture, first curved surface is placed downwards, fixture is fixed on optics machining center turntable, adjust chucking position and make its cylinder axial line coaxial with turntable, on the cylinder end face of fery's prism initial configuration, process second curved surface.
2. the processing method of curved surface prism fery's prism according to claim 1, is characterized in that: the angle between the axial line of the holding tank on axial line and the fixture of the cylindrical fixture in described step (3) equals the angle of two curved surface optical axises of fery's prism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310033499.1A CN103111630B (en) | 2013-01-29 | 2013-01-29 | Machining method of curved surface prism Fery prism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310033499.1A CN103111630B (en) | 2013-01-29 | 2013-01-29 | Machining method of curved surface prism Fery prism |
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| CN103111630A CN103111630A (en) | 2013-05-22 |
| CN103111630B true CN103111630B (en) | 2014-12-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643374B (en) * | 2016-02-06 | 2018-01-09 | 苏州大学 | A kind of processing method of aspherical mirror |
| CN105690187B (en) * | 2016-02-06 | 2018-03-27 | 苏州大学 | The processing method of off-axis aspheric mirror |
| CN108406505B (en) * | 2018-03-30 | 2023-06-13 | 马鞍山市江南光学有限公司 | Processing method of rhombic prism and hot glue winding device thereof |
| CN109822360B (en) * | 2019-04-08 | 2020-08-07 | 苏州大学 | Processing method of low-eccentricity-difference double-inner-conical-surface positioning block |
| CN110941037A (en) * | 2019-12-16 | 2020-03-31 | 中国科学院长春光学精密机械与物理研究所 | Processing tool and processing method for Fery prism |
| CN115415888B (en) * | 2022-09-06 | 2024-03-22 | 天津津航技术物理研究所 | Sphere off-axis mirror clamping frock |
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| GB1463508A (en) * | 1974-02-20 | 1977-02-02 | Curry Paxton Services Ltd | Lens holding devices |
| JP2001188208A (en) * | 1999-12-27 | 2001-07-10 | Seiko Epson Corp | Cup fastening method |
| CN101804593A (en) * | 2009-02-13 | 2010-08-18 | 中村留精密工业株式会社 | Processing method and grinding apparatus for lens |
| CN102078968A (en) * | 2011-01-20 | 2011-06-01 | 天津大学 | Ultraprecise turning method of optical lens with incline |
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Effective date of registration: 20200716 Address after: Room 203, Building 23, 1188, Second Ring Road, Shengze Town, Wujiang District, Suzhou City, Jiangsu Province Patentee after: Suzhou Chuansen Hengqi Ecological Technology Co.,Ltd. Address before: 215000 room 1210, building 1, Fenghua Commercial Plaza, Mudu Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: Suzhou Bingchen Intellectual Property Operation Co.,Ltd. Effective date of registration: 20200716 Address after: 215000 room 1210, building 1, Fenghua Commercial Plaza, Mudu Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Bingchen Intellectual Property Operation Co.,Ltd. Address before: 215123 No. 199 benevolence Road, Suzhou Industrial Park, Jiangsu, Suzhou Patentee before: SOOCHOW University |