CN1167534C - Computer digital control large-scale integrated optical processing mechanism - Google Patents
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- CN1167534C CN1167534C CNB001127179A CN00112717A CN1167534C CN 1167534 C CN1167534 C CN 1167534C CN B001127179 A CNB001127179 A CN B001127179A CN 00112717 A CN00112717 A CN 00112717A CN 1167534 C CN1167534 C CN 1167534C
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Abstract
A computer digital control large-scale integrated multifunctional processing system can be used for processing large-scale optical lenses. The processing system is composed of a base, a striding upright post and a beam, and a plurality of optical processing grinding heads, polishing discs and the like arranged on the beam. A workpiece rotary table is arranged on a parallel guide rail of a base, a computer digital control system controls a plurality of servo systems to drive the rotary table, an optical processing grinding head, a polishing disc and the like to finish five functions of optical surface precision forming, aspheric surface forming and polishing, large-scale high-gradient aspheric surface forming and polishing, small-tool optical surface forming and polishing and classical method grinding and polishing, the problems of single function and large limitation of the existing equipment are solved, and the processing quality and efficiency are improved.
Description
The present invention is a kind of computer digital control large multi-functional integrated optical system of processing, the process equipment manufacturing technology field that belongs to large-scale optical surface (aspheric surface, plane and sphere), relate to the optics manufacture field classical polishing machine, computer control small tool polishing machine, computer control large scale strain disc polishing machine, adopt the integrated and structural design of function of the passive type polishing machine of unified active polished die.
In the existing large-scale optical surface process technology equipment, classical polisher lapper is to adopt with the mould of the basic identical size of work piece, drag mould by swing mechanism, make it reciprocally swinging on the surface that is clamped in the work piece of rotation on the main shaft, dose the attrition process that diamond dust carries out mould and surface to be machined; Or preparation pitch glue-line is made polished die, is adopted the polishing compound to polish on mould.It is simple in structure, application is wide, and cost is low, mainly is applicable to flat, sphere processing; But be difficult to process aspheric surface, more be difficult to process off-axis aspheric surface; Process can't realize quantitative control.
Adopt small tool computer control polishing machine that a kind of effective way of processing aspheric surface, especially off-axis aspheric surface is provided.This equipment is equipped with the rotation rubbing head of an employing small tool, moves by preassigned path on finished surface.The track and the movement velocity in this path are controlled by microcomputer, because the removal amount of material is proportional with bistrique residence time length of any point position on workpiece, therefore, can realize the quantitative control that material is removed.The small tool rubbing head connects a digital interface, drive two analog servo systems, the servo-driver on two coordinates of X and Y is controlled the rubbing head slide plate respectively along the translational speed of crossbeam (X coordinate) and crossbeam (Y coordinate) translational speed on two closed slides at crossbeam two ends vertically.The positional information of crossbeam is by displacement sensor and feed back to computer.Small abrasive nose keep-ups pressure constant to finished surface, by the geomorphologic map that the interferometry figure of optical surface obtains surface height difference, handle expection motion track and the movement velocity that obtains small abrasive nose through software, by computer-controlled machine tool work.This weak point of carrying out the technology of precision optics processing with dedicated numerical control software-driven small size grinding head for polishing is that polishing efficiency is lower; Be not suitable for the processing of the high steepness of super large moldeed depth type (big relative aperture) minute surface; Maximum deficiency is also and can produces middle and high frequency residual error at finished surface that machining functions is single.
A kind of new polissoir has appearred in the development afterwards.This polissoir is on the basis of small tool computer control polishing machine, on crossbeam, install a high precision numerical control milling bistrique that adopts small-sized skive in addition additional, be shaped to required initial aspheric surface in order to direct milling finished surface, so that change computer controlled grinding or directly polishing over to.After milling was finished, the numerical-control milling and grinding bistrique can move on to an end of crossbeam.This class essence that improves equipment is only to be the computer control polishing machine of the small tool of two functions.
Over past ten years, a kind of computer control polissoir technology that adopts the large scale strain disc abroad appears again.This technology mainly is applicable to aspheric grinding of the dark type of oversize and polishing.Its groundwork principle is: the pull bar of a plurality of electromechanical drivers and some reasonable disposition is housed on slim disc circumference, forms a controlled variable stress system of internal stress; On slim disk, make large scale polishing grinding pan (mould), calculate and change the stress distribution of disk by computer system, thereby actively control the surface configuration of polishing grinding pan, make it to coincide, generally get strain disc and be of a size of 1/3 of workpiece diameter with processed non-spherical surface shape.Add man-hour, strain disc is initial from the center of work piece surface, rotation, and meanwhile move to the edge of work.In this process, strain disc must continuously change surface configuration under computer control, strain disc is left at non-spherical surface all keep coincideing of face shape on arbitrary off-axis position of culminating point, thereby realize the computer control strain disc Precision Machining of the dark type non-spherical reflector of large scale.This lathe is furnished with the high precision numerical control milling bistrique of small-sized skive, is configured as required initial aspheric surface in order to direct milling finished surface.Its advantage is to suppress and to remove middle and high frequency residual error effectively.Shortcoming is the requirement of equipment and technology very high; Difficult processing off-axis aspheric surface; In not too being fit to, the more smooth aspheric processing of small dimension.
University College London's physics and (the Optical ScienceLaboratory of optics research laboratory of department of astronomy, Dept.of Physics and Astronomy, University College London) Sug-Whan Kim, David Ree, ... wait the people at SPIE Vol.2775, publish the report that is entitled as " OGLP-400:An Innovative Computer Controlled Polishing Machine " on the 491-496, introduced a kind of model machine that adopts unified active polishing disk.The passive type polishing technology of the unified active polished die of this employing only is applicable in the little relative aperture, the mirror finish of small dimension.
Above-mentioned existing optics process equipment is difficult to avoid shortcoming and the limitation of himself when unit uses, limited their ranges of application separately.Up to now, both at home and abroad still without any an optics process equipment can compatible above five kinds of optics process equipments whole process technology functions.
The objective of the invention is to avoid above-mentioned the deficiencies in the prior art and a kind of computer digital control large multi-functional integrated optical system of processing that to collect multiple optical technology machining functions be one is provided.The selection widely of aspects such as geometric parameter at processing type, scope, finished surface, machining accuracy is provided for the operator; Also the combination of manufacturing process provides unprecedented possible condition for the different phase in processing adopts more suitably simultaneously.
Purpose of the present invention can reach by following measure: computer digital control large integrated system of processing comprises pedestal, closed slide, the two columns in gantry and crossbeam; Closed slide is housed on the pedestal, and on closed slide, removable and rotating numerical control rotating platform is installed; The two columns in gantry are installed on the pedestal, across crossbeam, three kinds of bistriques are installed on the crossbeam on it---numerically controlled small diamond emery wheel single-blade milling bistrique, numerical control small tool optical surfacing and grinding head for polishing, the active strain disc moulding in the sub-aperture of numerical control and grinding head for polishing; By the removable connector group of reduction box and crossbeam lower edge dismountable classical polishing disk and unified active strain disc can be installed temporarily; The host computer of computerized numerical system by a plurality of servo-drive system three kinds of bistriques of control and classical polishing disk and unified active strain disc, is finished numerically controlled small diamond single-blade milling optical surfacing, numerical control small tool optical surfacing and polishing, the active strain disc large-scale high steepness aspheric surface moulding of the sub-aperture of numerical control and polishing, classical approach moulding and polishing, five kinds of functions of moulding of the unified active strain disc aspheric surface of numerical control and polishing through high-speed data channel; Input peripheral links to each other with the strain disc digital control computer with the numerical control of machine tools computer by high-speed data channel, can import the compound mode of processing type, scope, precision, finished surface geometric parameter and above-mentioned five kinds of machining functions; Also can control each bistrique and mill motion servo system by high-speed data channel and I/O interface, realize the combination of above-mentioned five kinds of functions by the numerical control of machine tools computer.
Purpose of the present invention also can realize by following technical measures: numerically controlled small skive single-blade milling bistrique, numerical control small tool optical surfacing and the grinding head for polishing, the active strain disc moulding in the sub-aperture of numerical control and the grinding head for polishing that are installed on the crossbeam all move on the guide rail that crossbeam is installed; Guide rail can be a kind of in roller, the slidingtype.
Purpose of the present invention can also realize by following technical measures: fixing reduction box drives disk and connecting rod action on the pedestal; Dismountable connector is installed on the crossbeam; Quick-detachable head and balancing point are installed in fork and connecting rod junction fixing on the connector, and dismountable classical polishing disk or unified active strain disc are installed on the balancing point.
Purpose of the present invention can also realize by following technical measures: high-speed data channel connects host computer and the numerical control of machine tools computer and the strain disc digital control computer of Computerized digital control system; The numerical control of machine tools computer connects and control table servo system, milling bistrique servo-drive system, small tool bistrique servo-drive system, strain disc grinding head for polishing servo-drive system and reduction box drive system, and the control of strain disc digital control computer also drives strain disc anamorphotic system, many probe measurements of square lattice platform circuit; CRT operation center is connected to high-speed data channel.
Purpose of the present invention can also realize by following technical measures: the Digital Control of Machine Tool computer directly is connected with the strain disc digital control computer, and all is connected with the I/O interface by high-speed data channel and control that servo-drive system is polished by table servo system, milling servo-drive system, small tool optical surfacing polishing servo-drive system, the active strain disc in sub-aperture, unified active strain disc polishes drive system and measuring circuit; CRT-disk operating center connects the high speed data transfer passage.
The present invention compared with prior art has following advantage:
1. three kinds of bistriques are installed, are installed additional classical approach grinding and polishing assembly and unified active strain disc, pedestal are installed shared numerical control rotating platform by a pedestal and crossbeam, make an integrated system of processing frame for movement substitute the five cover frame for movements that prior art is finished five cover units of identical function; With the digital control system (electric-control system) of the alternative five cover stand-alone device of a cover computerized numerical system, saved the material of equipment greatly, reduced cost and cost.
Function and input equipment thereof that the present invention can need finish on five complete equipments before finishing on a set of equipment, working (machining) efficiency obviously improves.
The present invention is by Computerized digital control system and input equipment thereof, the selection widely of aspects such as geometric parameter at processing type, scope, finished surface, machining accuracy is provided for the operator, and processing different phase adopt the more suitably combination of manufacturing process, make multi-functional mutual supplement with each other's advantages, proofreaied and correct and remedied the shortcoming and the limitation of unit; As before digital control processing, carrying out one section classical polishing to increase substantially the polishing working (machining) efficiency; Adopt classical polishing technology that the numerical control finished surface is carried out last improving and " softening ", make machining functions strengthen and increase, improve machined surface quality thus, thereby machining accuracy and quality are improved greatly.
The invention will be further described below by drawings and Examples.
Fig. 1 is the front view of the frame for movement of the embodiment of the invention.
Fig. 2 is the vertical view of frame for movement of the present invention.
Fig. 3 is the left view of frame for movement of the present invention.
Fig. 4 is the A-A cutaway view of the left view of frame for movement of the present invention.
Fig. 5 is the electric control schematic diagram of the embodiment of the invention one.
Fig. 6 is the electric control schematic diagram of the embodiment of the invention two.
Computer digit large-sized multifunction integrated optics system of processing embodiment one as depicted in figs. 1 and 2, upright flame pair of column 16 on its lathe base 1, crossbeam 2 straddles on two columns 16.Rolling guide 32 is installed on the crossbeam 2, three kinds of bistriques---numerically controlled small skive milling bistrique 5, numerical control small tool optical surfacing and grinding head for polishing 6, the active strain disc moulding in the sub-aperture of numerical control and grinding head for polishing 7 from left to right are installed on the crossbeam 2 according to this, and all move on rolling guide 32.
The two columns 16 in upright gantry on the lathe base 1 of embodiments of the invention two, crossbeam 2 straddles on two columns 16.32, three kinds of bistriques of static pressure type (or slidingtype) guide rail are installed on the crossbeam 2 from left to right are installed in according to this on the crossbeam 2, and all on static pressure type (or slidingtype) guide rail 32, move.
As shown in Figure 1 and Figure 2, numerically controlled small skive milling bistrique 5 is done moving of Z direction on the vertical slide 33 of self; Numerical control small tool optical surfacing and grinding head for polishing 6 are done moving of Z direction on the vertical slide 34 of self; Active strain disc moulding in the sub-aperture of numerical control and grinding head for polishing 7 are done moving of Z direction on the vertical slide 35 of self.
Closed slide 3 is installed the work spindle numerical control rotating platform 4 of the multi-functional integrated system of processing lathe of computer digital control large along vertically (Y of lathe to) installing of pedestal 1 on the closed slide 3.The numerical control rotating platform 4 that loads workpiece can rotate, also can moving linearly.
Numerical control rotating platform 4 shown in Figure 2 is positioned at Y
00The position, this moment, its axis was also passed through perpendicular to numerical control rotating platform 4 in the same plane at each bistrique axis place.Numerical control rotating platform 4 is on this position the time:
Two-stage distributed Computerized digital control system host computer 20 is by numerical control of machine tools computer 22 control milling bistrique servo-drive systems 25, drive numerically controlled small skive single-blade milling bistrique 5 and finish in the center range on the running fix of directions X, the vertical slide 33 at the left end of crossbeam 2 and finish moving and the location of Z direction, realize the processing and forming of optical surface at self.At this moment, the active strain disc grinding head for polishing 7 in small tool moulding and grinding head for polishing 6 and sub-aperture is waited to keep away at the right-hand member of crossbeam 2.
Numerical control of machine tools computer 22 control small tool plastic polishing bistrique servo-drive systems 26 drive numerical control small tool surface forming and grinding head for polishing 6 and finish in the scope of right-hand member on moving of directions X and location, the vertical slide 34 at self at the left end of crossbeam 2 and finish moving and locating of Z direction.Numerical control of machine tools computer 22 is by table servo system 24 and small tool plastic polishing bistrique servo-drive system 26 control numerical control rotating platform 4 and moulding of numerical control small tool and grinding head for polishing 6, carry out the axial symmetry offset correction of finished surface in the polar coordinates mode, process non-axisymmetrical surfaces or proofread and correct non-axial symmetry deviation in the rectangular coordinates mode.At this moment, milling bistrique 5 is waited to keep away at the left end of crossbeam 2, and the active strain disc grinding head for polishing 7 in sub-aperture is waited to keep away at the right-hand member of crossbeam 2.
Numerical control of machine tools computer 22 proof stress dish grinding head for polishing servo-drive systems 27 drive the active strain disc moulding in the sub-aperture of numerical control and grinding head for polishing 7 and finish in the scope of right-hand member on moving of directions X and location, the vertical slide 34 at self at the center of crossbeam 2 and finish moving and locating of Z direction.While strain disc digital control computer 23 proof stress dish servo-drive systems 29, driving strain disc 8 is outwards moved by the center edge rotation limit of finished surface, it is adaptive with the processing aspheric surface constantly to change card face shape continuously, finishes moulding of large-scale high steepness aspheric surface and polishing.At this moment, milling mill 5 is waited to keep away at the left end of crossbeam 2 with small tool plastic polishing bistrique 6.
Fig. 3 is the left view of large-sized multifunction integrated optics system of processing frame for movement.Numerical control rotating platform 4 is positioned at the Y11 position shown in this figure.And, additional connector 9 has been installed on the crossbeam 2 temporarily, connector 9 has around Z axle swing with around two frees degree of X-axis pitching, and fork 13 inserts connectors 9 and locked.
Fig. 4 is the A-A cutaway view of integrated optics system of processing frame for movement left view, and reduction box 12 fixing on the pedestal 1 is rotated by 28 drivings of reduction box drive system and drive disk 11, and drives connecting rod 10 actions of installation temporarily by eccentric lock shaft 19.The junction of fork 13 and connecting rod 10 is installed the head 18 that can load and unload fast and is connected balancing point 14, the balancing point 14 interim polishing disks 15 that connect, at the surface of the work reciprocally swinging, carry out classical grinding and polishing by polishing disk 15, the amplitude of oscillation is by the eccentric throw control of adjusting eccentric lock shaft 19.Perhaps, the unified active strain disc 17 of interim installation can be finished active strain disc aspheric surface moulding of unified standard and polishing on balancing point 14.
Fork 13 and connecting rod 10 are thrown off from balancing point 14 junctions, move on to chain-dotted line shown in Figure 4 position after, computer digital control large multi-functional integrated optical system of processing can be carried out vertical online optical check to the processing minute surface.
Fig. 5 is the automatically controlled part theory diagram of computer digital control large multi-functional integrated optical system of processing embodiment one.Electric control part is divided into two-stage distributed Computerized digital control system.Host computer 20 connects, controls, coordinates lathe digital control computer 22 and strain disc distortion digital control computer 23 by high-speed data channel 21.Numerical control of machine tools computer 22 control table servo systems 24, milling bistrique servo-drive system 25, small tool plastic polishing bistrique servo-drive system 26, strain disc grinding head for polishing servo-drive system 27, reduction box drive system 28.Table servo system 24 drives numerical control rotating platform 4 and rotates and move as straight line; Milling bistrique servo-drive system 25 driving numerically controlled small skive single-blade milling bistriques 5 move and locate; Small tool bistrique servo-drive system driving numerical control small tool surface forming and grinding head for polishing 6 move and locate; 27 driving numerical control sub-aperture strain disc moulding of strain disc grinding head for polishing servo-drive system and grinding head for polishing 7 move and locate; Reduction box drive system 28 drives reduction box 12.Strain disc distortion digital control computer 23 proof stress dish anamorphotic systems 29, drive strain disc 8 in the process that outwards move on finished surface center edge rotation limit, constantly change its face shape according to positional information, and can be by the square lattice of special use scaffold tower circuit 30 independent detection outside lathe of popping one's head in more, the distortion of adjustment strain disc, and set up the relevant database of strain disc.When the strain disc grinding head for polishing is worked, by host computer 20 control lathe digital control computers 22 and 23 concurrent workings of strain disc distortion digital control computer; Do not work and during the work of other bistrique, numerical control of machine tools computer 22 works alone at the strain disc grinding head for polishing.CRT operation center 31 connects high-speed data channel 21, and the operator can import selected processing type, scope, finished surface geometric parameter, machining accuracy and machining functions combination by CRT operation center.Two-stage distributed Computerized digital control system is controlled each servo-drive system according to the parameter of input, finishes following five kinds of functions: the 1. small-sized skive single-blade of computer numerical control (CNC) milling optical surface precise forming; 2. classical approach grinds and polishing; 3. computer numerical control (CNC) small tool optical surfacing and polishing; 4. active strain disc aspheric surface moulding of the unified standard of computer numerical control (CNC) and polishing; 5. large-scale high steepness aspheric surface moulding of the active strain disc in the sub-aperture of computer numerical control (CNC) and polishing.And can finish any combination more than three kinds of five kinds of machining functions by revising parameter and program.
Fig. 6 is the automatically controlled part theory diagram of second embodiment of the invention.The electric control part of embodiment two is divided into the computerized numerical system of two central computers: directly connect between Digital Control of Machine Tool computer 40 and the strain disc digital control computer 41 and carry out the data transmission, the two connects CRT-disk operating centers 44 by high speed data transfer passage 42, and the operator can import that selected processing type, scope, precision, finished surface are severally watched parameter, machining functions makes up by CRT-disk operating center 44 to digital control computer.Numerical control of machine tools computer 40 and strain disc digital control computer 41 by I/O interface 43 control table servo systems 24, milling servo-drive system 36, small tool optical surfacing polishing servo-drive system 37, the active strain disc polishing in sub-aperture servo-drive system 38, unified active strain disc polishing drive circuit 39, are finished five kinds of machining functions through high speed data transfer passage 42: the 1. small-sized skive single-blade of computer numerical control (CNC) milling optical surface precise forming; 2. classical approach grinds and polishing; 3. computer numerical control (CNC) small tool optical surfacing and polishing; 4. active strain disc aspheric surface moulding of the unified standard of computer numerical control (CNC) and polishing; 5. large-scale high steepness aspheric surface moulding of the active strain disc in the sub-aperture of computer numerical control (CNC) and polishing.And can finish any combination more than three kinds of five kinds of machining functions.Digital control system is carried out online optical check by measuring circuit 45, and the distortion of detection, adjustment strain disc, and sets up the relevant database of strain disc.
Claims (5)
1. computer digital control large integrated system of processing, comprise pedestal (1), closed slide (3), the two columns (16) in gantry and crossbeam (2), it is characterized in that: closed slide (3) is housed on the pedestal (1), and goes up installation removable and rotating numerical control rotating platform (4) at closed slide (3); The two columns (16) in gantry are installed on the pedestal (1), on it across crossbeam (2), three kinds of bistriques are installed on the crossbeam (2)---numerically controlled small diamond emery wheel single-blade milling bistrique (5), numerical control small tool optical surfacing and grinding head for polishing (6), the active strain disc moulding in the sub-aperture of numerical control and grinding head for polishing (7), by the removable connector group of reduction box (12) and crossbeam (2) lower edge dismountable classical polishing disk (15) and unified active strain disc (17) can be installed temporarily; The host computer of computerized numerical system (20) by a plurality of servo-drive system three kinds of bistriques of control and classical polishing disk (15) and unified active strain disc (17), is finished numerically controlled small diamond single-blade milling optical surfacing, numerical control small tool optical surfacing and polishing, the active strain disc large-scale high steepness aspheric surface moulding of the sub-aperture of numerical control and polishing, classical approach moulding and polishing, five kinds of functions of moulding of the unified active strain disc aspheric surface of numerical control and polishing through high-speed data channel (21); Input peripheral links to each other with strain disc digital control computer (23) with numerical control of machine tools computer (22) by high-speed data channel (21), can import the compound mode of processing type, scope, precision, finished surface geometric parameter and above-mentioned five kinds of machining functions; Also can control each bistrique and mill motion servo system by high-speed data channel (42) and I/O interface (43), realize the combination of above-mentioned five kinds of functions by numerical control of machine tools computer (40).
2. computer digital control large integrated system of processing according to claim 1, it is characterized in that: numerically controlled small diamond emery wheel single-blade milling bistrique (5), numerical control small tool optical surfacing and the grinding head for polishing (6), the active strain disc moulding in the sub-aperture of numerical control and the grinding head for polishing (7) that are installed on the crossbeam (2) are installed on the same crossbeam (2), and the guide rail of all installing at crossbeam (2) (32) is gone up mobile; Guide rail (32) can be a kind of in roller or the slidingtype.
3, computer digital control large integrated system of processing according to claim 1 and 2 is characterized in that: pedestal (1) is gone up fixing reduction box (12) and is driven disk (11) and connecting rod (10) action; Crossbeam (2) is gone up dismountable connector (9) is installed; Connector (9) is gone up fixing fork (13) and with connecting rod (10) junction quick-detachable head (18) and balancing point (14) is installed, and balancing point (14) is gone up dismountable polishing disk (15) or unified active strain disc (17) are installed.
4, computer digital control large integrated system of processing according to claim 1 is characterized in that: numerical control of machine tools computer (22) connects and control table servo system (24), milling bistrique servo-drive system (25), small tool bistrique servo-drive system (26), strain disc grinding head for polishing servo-drive system (27) and reduction box drive system; Strain disc distortion computer (23) control also drives strain disc anamorphotic system (29), many probe measurements of square lattice platform circuit (30); CRT operation center (31) is connected to high-speed data channel (21).
5. computer digital control large integrated system of processing according to claim 1, it is characterized in that: Digital Control of Machine Tool computer (40) directly is connected with strain disc digital control computer (41), and all passes through high speed data transfer passage (42) and be connected with I/O interface (43) and control table servo system (24), milling servo-drive system (36), small tool optical surfacing and polishing servo-drive system (37), the active strain disc moulding in sub-aperture and polishing servo-drive system (38), unified active strain disc polishing servo-drive system (39), measuring circuit (45); CRT disk operating center (44) connects high-speed data channel (42).
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| CNB001127179A CN1167534C (en) | 2000-03-02 | 2000-03-02 | Computer digital control large-scale integrated optical processing mechanism |
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| CNB001127179A CN1167534C (en) | 2000-03-02 | 2000-03-02 | Computer digital control large-scale integrated optical processing mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372085B (en) * | 2007-08-20 | 2011-03-02 | 株式会社春近精密 | Equipment for processing lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005001100A (en) * | 2003-02-21 | 2005-01-06 | Seiko Epson Corp | Method of working aspherical face and method of forming aspherical face |
| CN100431790C (en) * | 2005-04-13 | 2008-11-12 | 云南北方光学电子集团有限公司 | Processing method of optical glass and silicon single crystal aspheric optical element |
| CN102198622A (en) * | 2011-03-23 | 2011-09-28 | 西安交通大学 | Novel large-caliber optical aspheric curved surface processing grinder structure |
| CN105014503A (en) * | 2015-05-19 | 2015-11-04 | 上海交通大学 | Precise grinding method for large-caliber axisymmetric aspheric surfaces |
| CN108500777B (en) * | 2018-04-04 | 2023-08-04 | 中国工程物理研究院激光聚变研究中心 | Detection device and detection method for shape error of polishing disc in full-caliber annular polishing |
| CN108818774A (en) * | 2018-07-09 | 2018-11-16 | 佛山市神雕机电设备有限公司 | A kind of wood milling equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101372085B (en) * | 2007-08-20 | 2011-03-02 | 株式会社春近精密 | Equipment for processing lens |
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