CN102371519A - Micro aspheric element grinding or polishing tracking machining method - Google Patents
Micro aspheric element grinding or polishing tracking machining method Download PDFInfo
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- CN102371519A CN102371519A CN2011102781666A CN201110278166A CN102371519A CN 102371519 A CN102371519 A CN 102371519A CN 2011102781666 A CN2011102781666 A CN 2011102781666A CN 201110278166 A CN201110278166 A CN 201110278166A CN 102371519 A CN102371519 A CN 102371519A
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Abstract
The invention discloses a micro aspheric element grinding or polishing tracking machining method. The grinding or polishing machining process is shot by adopting a digital camera imaging technology, grinding or polishing contact points form an actual machining locus, and the adjusting basis of a micro aspheric element grinding or polishing device is found by comparing the actual machining locus with the set locus; by changing the working azimuth of a millstone, consistency of the actual machining locus and the set machining locus can be basically ensured, so that the defects of low efficiency and high subjective error caused by artificial participation in monitoring are avoided, the yield is improved and the production cost is reduced; and the micro aspheric element grinding or polishing device can be adjusted automatically or manually, namely the device is automatically adjusted by adopting a computer according to the error parameters of calculation, and the numerical control effect is achieved.
Description
Technical field
The present invention relates to a kind of miniature non-spherical element processing method, particularly a kind of miniature non-spherical element degree of precision is ground or polishing processing method.
Background technology
The manufacturing of miniature non-spherical optical element generally relies on numerically-controlled precise machine tooling and method such as hot-forming, and not only device structure is complicated, and machining accuracy can not reach perfect condition, and the process technology cost is also higher.
For addressing the above problem; Patent application 201010105800.1 discloses a kind of miniature non-spherical element grinding and burnishing device, utilizes cam to drive the mill swing, makes mill to form the tangential to the non-spherical element surface and grinds; Simple in structure, with low cost.The outline of cam can be set according to the surface equation of non-spherical element, grind so that mill can form the tangential to the non-spherical element surface all the time; Bracing frame is set connects cam and millrind; Be that cam passes through bracing frame promotion millrind and mill swing; On the bracing frame governor motion is set simultaneously; This governor motion can be adjusted distance and/or bracing frame and the millrind position contacting between cam and the millrind within the specific limits; This adjustment can adapt to the non-spherical element that grinds different curve on the one hand, also can compensate structure such as cam on the other hand because the deviation that wearing and tearing cause, with the precision of maintenance miniature non-spherical element grinding and burnishing device; The cam of this patent application is arranged to the cam combination, can forms complicated compound cam profile, cost is low; Can adjust the phase angle between the single cam on the other hand, thereby change cam contour, it is similar to process profile, has the non-spherical element of different parameters (like focal length) again.Preferably resolve the problems referred to above of prior art.
But, this miniature non-spherical element grinding and burnishing device grind or polishing processing in, need manual monitoring; Just add stopping of need being interrupted man-hour and observe, with guarantee machining locus with design consistent.This has just caused the low of working (machining) efficiency, and manual monitoring can cause subjective error, influences machining accuracy, even causes percent defective higher.
Therefore; Need improve miniature non-spherical element grinding and polishing processing method, can guarantee basically that actual machining locus is consistent with the setting machining locus, avoid the artificial situation that efficient is low, subjective error is high that monitoring causes of participating in; Improve yield rate, reduce production costs.
Summary of the invention
In view of this; The object of the invention provides a kind of miniature non-spherical element grinding or polishing to follow the tracks of processing method; Can guarantee basically that actual machining locus is consistent with the setting machining locus; Avoid the artificial situation that efficient is low, subjective error is high that monitoring causes of participating in, improve yield rate, reduce production costs.
Processing method is followed the tracks of in miniature non-spherical element grinding of the present invention or polishing, utilizes miniature non-spherical element grinding or burnishing device miniature non-spherical element to be ground or polishes processing, comprises the following steps:
A. data acquisition: utilize DV to take the grinding or the polishing process of the mill of miniature non-spherical element grinding or burnishing device to non-spherical element, institute's image data of gathering is imported computer;
B. form to grind or polishing locus: in computer, gather the photo of image data successively, connect successively that the contact point of mill and non-spherical element forms actual grinding or polishing locus in the photo by frame;
C. with actual grinding or polishing locus and setting grinding or polishing locus contrast; If conform to; Then continue to grind or polishing; If do not conform to, then adjust the work orientation of the mill of miniature non-spherical element grinding or burnishing device, match until actual grinding or polishing locus and setting grinding or polishing locus;
D. continue to carry out a to c step, until grinding or the polishing completion.
Further, among the step c, set grinding or polishing locus for being stored in the calibration curve of computer in advance, the contrast between actual grinding or polishing locus and setting grinding or the polishing locus is accomplished by computer, and calculates error parameter.
Further, among the step a, at least two of said DVs be distributed in miniature non-spherical element grinding or burnishing device around, each DV will belong to orientation captured image data input computer input computer;
Among the step b; Image data with each DV in computer forms continuous photo by frame respectively, and mill is in turn connected to form and corresponding actual grinding or the polishing locus in DV orientation, place in the contact point of non-spherical element in the continuous photo;
Among the step c, will belong to the setting grinding or the polishing locus contrast in the corresponding actual grinding in orientation or polishing locus and corresponding orientation with DV;
Further; Said non-spherical element grinding or burnishing device comprise main motor and main motor-driven some cams; Also comprise the mill that is provided with on millrind and the millrind; The clamp head that also comprises the clamping non-spherical element, among the step a, the non-spherical element of clamping on said mill contact and grinding or the polishing clamp head; Said cam supports millrind, and millrind makes mill form the tangential to the non-spherical element surface and grinds or polish along with the rotation of cam is swung;
Further, said cam supports millrind through bracing frame, and bracing frame is provided with governor motion and is used to adjust distance and/or bracing frame and millrind position contacting between cam and the millrind;
Further, said cam is the cam combination, promptly by the synthetic cam that supports millrind through a bracing frame of the single cam set of some coaxial rotations.
Beneficial effect of the present invention: processing method is followed the tracks of in miniature non-spherical element grinding of the present invention or polishing; Adopt the DV imaging technique, take and make grinding or polishing contact point to form actual machining locus, compare with the track of setting to grinding or polishing processing; Thereby find the adjustment foundation of adjustment miniature non-spherical element grinding or burnishing device; Change the work orientation of mill, can guarantee basically that actual machining locus is consistent with the setting machining locus, avoid the artificial situation that efficient is low, subjective error is high that monitoring causes of participating in; Improve yield rate, reduce production costs; The adjustment of adjustment miniature non-spherical element grinding or burnishing device can be adopted automatically or manual mode, can adopt computer according to the self-adjusting mode of calculating of error parameter automatically, obtains the numerical control effect.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Fig. 1 follows the tracks of the processing method block diagram for the present invention;
Fig. 2 miniature non-spherical element grinding and burnishing device structural representation;
The specific embodiment
Fig. 1 is a tracking block diagram of the present invention; Fig. 2 miniature non-spherical element grinding and burnishing device structural representation; As shown in the figure: processing method is followed the tracks of in the miniature non-spherical element grinding of present embodiment or polishing; Utilize miniature non-spherical element grinding or burnishing device miniature non-spherical element to be ground or polishes processing, comprise the following steps:
A. data acquisition: utilize DV 22 to take the grinding or the polishing process of the mill of miniature non-spherical element grindings or burnishing device to non-spherical element, institute's image data of gathering is imported computer 23; DV 22 and computer 23 can be arranged at by miniature non-spherical element grinding or the burnishing device, make a video recording through computer 23 controls, connect input computer 23 through data; Can adopt any connected mode feasible in the prior art;
B. form to grind or polishing locus: in computer 23, gather the photo of image data successively, connect successively that the contact point of mill and non-spherical element forms actual grinding or polishing locus in the photo by frame; Said process is realized through the program that is installed in the computer, pounces on continuously and catches photo, obtains track, and this track is a curve;
C. with actual grinding or polishing locus and setting grinding or polishing locus contrast; If conform to; Then continue to grind or polishing; If do not conform to, then adjust the work orientation of the mill of miniature non-spherical element grinding or burnishing device, match until actual grinding or polishing locus and setting grinding or polishing locus;
D. continue to carry out a to c step, until grinding or the polishing completion.
In the present embodiment, among the step c, set grinding or polishing locus for being stored in the calibration curve of computer 23 in advance, the contrast between actual grinding or polishing locus and setting grinding or the polishing locus is accomplished by computer 23, and calculates error parameter; Adopt computer directly to contrast and obtain comparing result, not only guarantee the contrast precision, can also increase work efficiency, further avoid artificial error of participating in.
In the present embodiment, among the step a, 22 at least two of said DVs be distributed in miniature non-spherical element grinding or burnishing device around, present embodiment adopts two to be symmetrically distributed with respect to miniature non-spherical element, demonstrates one among the figure; Each DV 22 will belong to the captured image data input computer input computer 23 in orientation;
Among the step b; Image data with each DV 22 in computer 23 forms continuous photo by frame respectively, and mill is in turn connected to form and corresponding actual grinding or the polishing locus in DV orientation, place in the contact point of non-spherical element in the continuous photo;
Among the step c, actual grinding that will be corresponding with orientation, DV 22 place or polishing locus contrast with the setting grinding or the polishing locus in corresponding orientation;
Obtain from each orientation and to grind or polishing locus, be beneficial to from three and obtain data, make the result more accurate, be beneficial to the raising machining accuracy.
As shown in Figure 2: miniature non-spherical element grinding and burnishing device comprise support frame 10 and are arranged at the cantilever 1 on the support frame 10; Clamp head 6 moving up and down is set on the cantilever 1, and clamp head 6 is used for clamping non-spherical element to be processed; Clamp head 6 is connected with anchor clamps rotating shaft 2, in driving lower clamp rotating shaft 2 rotations of clamp motor 3, thereby drives clamp head 6 rotations.Anchor clamps rotating shaft 2 is arranged in the lifting tube 4, and lifting tube 4 is outer to be provided with tooth bar and adjusting gear 5 engagements, and adjusting gear 5 rotations can make clamp head 6 move up and down in vertical direction.Regulate the rotating shaft 11 that in the support frame 10 main motor 13 is set and transmits main motor 13 power.Two cam combination 12 cam combinations in the present invention are set in the rotating shaft 11 play action of cam in fact, concrete structure and effect detail in the back, have certain spacing distance between two cam combinations 12.The bracing frame that cooperates with each cam combination 12 supports millrind 18, the mill 21 that mill motor 20 is set on the millrind 18 and is driven by mill motor 20; The camera of DV 22 that is used to gather image data is over against the abradant surface of clamp head 6 and mill 21, to be used to gather grinding or the polishing process to miniature non-spherical element.
Clamp head 6 will be processed the optical element blank of polishing and fixed; Clamp head 6 moves to suitable position in vertical direction and guarantees that mill 21 can grind or the position of polishing of optical spare blank; Thereby main motor 13 rotates and drives cam combination 12 rotations; And then make millrind 18 swing, millrind 18 swing to the appropriate location guarantee mill 21 can the tangential grind or the position of polishing of optical spare blank after promptly begin to grind or polishing process, if grind or polishing be rotation non-spherical element with a symmetry axis; Then start clamp motor 3, make clamp head 6 rotate; If grinding or polishing is the non-face of cylinder element with a symmetrical plane, then do not start clamp motor 3, clamp head 6 is not rotated.Change mill 21 and abrasive material, can implement operations such as corase grind, fine grinding, correct grinding and polishing.
The less use of situation that cam combination 12 directly contacts with millrind 18, generally speaking, cam combination 12 all is through bracing frame millrind 18 to be supported.Visible from Fig. 1, bracing frame comprises push rod 14, width adjusting bar 17 and the millrind pole 8 that is linked in sequence.Push rod 14 contacts with cam combination 12, and push rod 14 is along with the rotation of cam combination 12 moves up and down.The spring 15 that also is provided with spring socket sleeve 16 on the push rod 14 and cooperates with it; The elastic force of spring 15 makes push rod 14 closely to contact with cam combination 12 all the time; To guarantee that push rod 14 is all the time along with the profile of cam combination 12 moves; Avoid because factors such as inertia cause the motion of push rod 14 and the formed theory movement of profile of cam combination 12 to produce deviation, thereby cause millrind 18 motions that deviation takes place.
The effect of width adjusting bar 17 is the distances of regulating between millrind pole 8 and the push rod 14, can clearly see width adjusting bar 17 structures in conjunction with Fig. 2.Width adjusting bar 17 1 ends are to have a screw rod of regulating screw thread, and the nut that is provided with on this screw rod and the push rod 14 cooperates so that width adjusting bar 17 is mobile on the horizontal direction of Fig. 1.The other end of width adjusting bar 17 is provided with adjusting nut 9, and adjusting nut 9 cooperates with lifting screw on the millrind pole 8, moves in the vertical direction of Fig. 1 so that lifting screw is a millrind pole 8.The end that one end of width adjusting bar 17 is provided with adjusting nut 9 has the shape of similar the shank of the key, except that the lifting screw that the centre is passed, also has two guide posts that pass, and the effect of guide post is to make the motion of millrind 18 more stable.
The structure of millrind pole 8 and millrind pole 8 are following with the assembly structure of millrind 18: the below of millrind pole 8 is parallel two guide posts and lifting screw; The top of millrind pole 8 is a U type structure; Both sides are provided with in the chute 19 of 7, two alignment pins 7 of alignment pin on millrind 18 and slide in the U type mouth.Can find out that the distance that width adjusting bar 17 is regulated between millrind pole 8 and the push rod 14 is to realize through promoting to slide in the chute 19 of millrind pole 8 on millrind 18.
The motor shaft of millrind 18 central hole is connected the mill motor 20 of the mill 21 of millrind 18 tops and below, and mill motor 20 drives mill 21 rotation stably in circular groove.In the chute 19 of four " recessed " fonts of millrind 18 two sides, alignment pin 7 can slide in chute 19.
The cam combination 12 single cams by two coaxial rotations combine, and a cam combination 12 is through a bracing frame support millrind, and two cams make up 12 about promptly having, and a push rod 14 is supported in each cam combination 12.The profile of cam combination 12 or said single cam is confirmed according to the surface configuration of the non-spherical element that will process; Because requiring 21 pairs of non-spherical elements of mill to carry out the tangential during processing non-spherical element grinds; Therefore under the situation of known non-spherical element finished surface equation, the movement locus of millrind 18 can be derived, thereby the curvilinear equation of the profile of cam combination 12 or said single cam can be confirmed.Two said single cams have phase difference, can on dividing head, accurately regulate.Regulate the contour curve that two said single cam phase differences can be adjusted cam combination 12 on the whole, it is different to obtain profile aspherical optical element such as focal length similar, that have different parameters through a pair of said single cam combination like this.In addition, from cam contour design and processing, the cost of cam combination is lower.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. processing method is followed the tracks of in miniature non-spherical element grinding or polishing, utilizes miniature non-spherical element grinding or burnishing device miniature non-spherical element to be ground or polishes processing, it is characterized in that: comprise the following steps:
A. data acquisition: utilize DV to take the grinding or the polishing process of the mill of miniature non-spherical element grinding or burnishing device to non-spherical element, institute's image data of gathering is imported computer;
B. form to grind or polishing locus: in computer, gather the photo of image data successively, connect successively that the contact point of mill and non-spherical element forms actual grinding or polishing locus in the photo by frame;
C. with actual grinding or polishing locus and setting grinding or polishing locus contrast; If conform to; Then continue to grind or polishing; If do not conform to, then adjust the work orientation of the mill of miniature non-spherical element grinding or burnishing device, match until actual grinding or polishing locus and setting grinding or polishing locus;
D. continue to carry out a to c step, until grinding or the polishing completion.
2. processing method is followed the tracks of in miniature non-spherical element grinding according to claim 1 or polishing; It is characterized in that: among the step c; Set grinding or polishing locus for being stored in the calibration curve of computer in advance; Contrast between actual grinding or polishing locus and setting grinding or the polishing locus is accomplished by computer, and calculates error parameter.
3. follow the tracks of processing method based on described miniature non-spherical element grinding of claim 2 or polishing; It is characterized in that: among the step a; At least two of said DVs be distributed in miniature non-spherical element grinding or burnishing device around, each DV will belong to orientation captured image data input computer input computer;
Among the step b; Image data with each DV in computer forms continuous photo by frame respectively, and mill is in turn connected to form and corresponding actual grinding or the polishing locus in DV orientation, place in the contact point of non-spherical element in the continuous photo;
Among the step c, will belong to the setting grinding or the polishing locus contrast in the corresponding actual grinding in orientation or polishing locus and corresponding orientation with DV.
4. follow the tracks of processing method based on described miniature non-spherical element grinding of claim 3 or polishing; It is characterized in that: said non-spherical element grinding or burnishing device comprise main motor and main motor-driven some cams; Also comprise the mill that is provided with on millrind and the millrind; The clamp head that also comprises the clamping non-spherical element; Among the step a, the non-spherical element of clamping on said mill contact and grinding or the polishing clamp head; Said cam supports millrind, and millrind makes mill form tangential the grinding or polishing to the non-spherical element surface along with the rotation of cam is swung.
5. processing method is followed the tracks of in miniature non-spherical element grinding according to claim 4 or polishing; It is characterized in that: said cam supports millrind through bracing frame, and bracing frame is provided with governor motion and is used to adjust distance and/or bracing frame and millrind position contacting between cam and the millrind; Step.
6. processing method is followed the tracks of in miniature non-spherical element grinding according to claim 5 or polishing, it is characterized in that: said cam is the cam combination, promptly by the synthetic cam that supports millrind through a bracing frame of the single cam set of some coaxial rotations.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110278166.6A CN102371519B (en) | 2011-09-19 | 2011-09-19 | Micro aspheric element grinding or polishing tracking machining method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110278166.6A CN102371519B (en) | 2011-09-19 | 2011-09-19 | Micro aspheric element grinding or polishing tracking machining method |
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| CN102371519A true CN102371519A (en) | 2012-03-14 |
| CN102371519B CN102371519B (en) | 2014-06-04 |
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Cited By (8)
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| CN103386640A (en) * | 2013-07-29 | 2013-11-13 | 中国科学院长春光学精密机械与物理研究所 | Accurate alignment method for large aperture mirror machine tool |
| CN103454134A (en) * | 2013-09-18 | 2013-12-18 | 核工业理化工程研究院 | Sample polishing subsidiary harness adopting gear and rack |
| CN104175222A (en) * | 2014-08-25 | 2014-12-03 | 上海交通大学 | Large-ball grinding trace feature image capturing device and sphericity judgment method |
| CN104191332A (en) * | 2014-08-25 | 2014-12-10 | 上海交通大学 | Device and method for automatically compensating for sphericity error of large-scale spherical grinding |
| CN105014525A (en) * | 2015-07-03 | 2015-11-04 | 浙江工业大学 | Self-adaptive adjusting method based on multi-degree-of-freedom adjusting mechanism of grinded/polished workpieces |
| CN106514456A (en) * | 2016-11-01 | 2017-03-22 | 北京理工大学 | Machining and detecting device and method for large-aperture aspheric contour |
| CN107825229A (en) * | 2017-11-14 | 2018-03-23 | 常州大思世成机电科技有限公司 | A kind of cast(ing) surface dressing method |
| CN114599500A (en) * | 2019-10-24 | 2022-06-07 | 西得乐集团 | Movement control device for controlling the movement of a mobile element of a machine for manufacturing plastic containers |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106514456A (en) * | 2016-11-01 | 2017-03-22 | 北京理工大学 | Machining and detecting device and method for large-aperture aspheric contour |
| CN106514456B (en) * | 2016-11-01 | 2019-06-14 | 北京理工大学 | Aperture aspherical contour machining detects integral method |
| CN107825229A (en) * | 2017-11-14 | 2018-03-23 | 常州大思世成机电科技有限公司 | A kind of cast(ing) surface dressing method |
| CN114599500A (en) * | 2019-10-24 | 2022-06-07 | 西得乐集团 | Movement control device for controlling the movement of a mobile element of a machine for manufacturing plastic containers |
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