CN212735553U - Quick quantitative repairing and grinding device for inclination angle of lens group - Google Patents
Quick quantitative repairing and grinding device for inclination angle of lens group Download PDFInfo
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- CN212735553U CN212735553U CN202021320818.9U CN202021320818U CN212735553U CN 212735553 U CN212735553 U CN 212735553U CN 202021320818 U CN202021320818 U CN 202021320818U CN 212735553 U CN212735553 U CN 212735553U
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Abstract
The utility model provides a quick ration of group's inclination is repaiied and is ground device solves current and easily causes the bottom surface unevenness to the group's boss grinding method of plane mirror, and grinding efficiency is lower, detect comparatively loaded down with trivial details problem. The device comprises a working platform, a testing unit and a grinding unit, wherein the testing unit and the grinding unit are arranged on the working platform; the test unit comprises a standard angle block, a reference bottom plate and a display which are arranged on the working platform, and a self-collimation micro light pipe arranged on the reference bottom plate; the display is connected with the auto-collimation micro-light measuring tube, and the angle of the standard angle block is the same as the required included angle between the plane mirror and the bottom plate in the standard grinding plane group; the grinding unit comprises a grinding platform, a sliding bottom plate and N positioning screws; the grinding platform is arranged on the working platform; the sliding bottom plate is arranged on the grinding platform through a sliding assembly; n positioning screws are respectively arranged in N pressing threaded holes of the sliding bottom plate in a penetrating mode, and positioning columns at the lower ends of the N positioning screws respectively extend into N fixing holes in the upper surface of the bottom plate of the plane mirror group to be ground.
Description
Technical Field
The utility model relates to a mirror group is repaiied and is ground device, concretely relates to quick ration of mirror group inclination is repaiied and is ground device.
Background
In complex optical system designs, it is common to use a large number of planar mirror sets and lenses for optical path folding and imaging at various angles. The posture adjustment of each plane mirror group and each lens is very important in the whole complex optical system, the precision of the light path directivity and the imaging quality are determined, and the precision of each index of a subsequent light path is directly influenced. The inclination angles of the plane mirror group and the lens position can meet the requirement through debugging the rotary mirror group, and the adjustment of the pitching inclination angle meets the requirement through directly researching a higher angle value for high stability and lower cost. Especially, when the lens group is applied in a large scale, the grinding efficiency and precision of the pitching angle have great influence on the adjustment efficiency of the whole set of complex optical system.
As shown in fig. 1 and fig. 2, taking a planar mirror group 01 as an example, the structure of the planar mirror group 01 includes a mirror base 06 and a planar mirror 02, the mirror base 06 includes a base plate 03 and a mirror frame 04 fixedly connected as a whole, the planar mirror 02 is mounted on the mirror frame 04, and the optical design requires that the included angle between the reflecting surface of the planar mirror 02 and the base plate 03 is 90 ° ± 10 ″, however, the existing structural design requirements and mounting methods generally have difficulty in ensuring such high-precision angle requirements, and it is necessary to grind a boss 05 on the lower surface of the base plate 03 to ensure that the included angle between the reflecting surface of the planar mirror 02 and the base. Under the condition that the plane mirror group is installed and used in a large scale, the angle grinding precision and efficiency of the plane mirror seriously influence the project progress.
At present, the traditional manual grinding method is adopted for grinding the boss of the plane mirror group 01, and the grinding efficiency is low due to the manual grinding; each boss is manually operated, and the boss surface of the bottom plate is easily uneven due to different hand pressure when each boss is ground, so that the problem that the plane mirror group is deformed and the like is caused; in addition, each time the boss of the existing plane mirror group is ground, whether the angle value (namely the grinding quality) of the plane mirror 02 and the bottom plate 03 meets the requirement needs to be detected, the plane mirror group is usually installed in a system to be worked in the detection process, and the working condition of the system to be worked is detected to obtain the grinding quality; usually, the lug boss of the plane mirror group needs to be repeatedly ground for many times, and the plane mirror group needs to be installed and detached in a waiting working system for many times, so that the detection of the grinding quality is complicated, the grinding efficiency of the plane mirror group is influenced, and the use efficiency and the product precision of the mirror group are further influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the existing grinding method for the lug boss of the plane mirror group easily causes unevenness of the bottom surface, and the technical problems of lower grinding efficiency and more complicated grinding quality detection, the utility model provides a quick quantitative repairing and grinding device for the inclination angle of the mirror group.
In order to achieve the above purpose, the utility model provides a technical scheme is:
a device for rapidly and quantitatively repairing and grinding the inclination angle of a lens group is characterized in that: comprises a working platform, a testing unit and a grinding unit which are arranged on the working platform;
the test unit comprises a standard angle block, a reference bottom plate and a display which are arranged on the working platform, and a self-collimation micro light pipe arranged on the reference bottom plate; the display is connected with the auto-collimation micro light pipe and is used for displaying a central cross image and a reflected auto-collimation image of the auto-collimation micro light pipe and obtaining a pitch angle error of the plane mirror group to be ground and the auto-collimation micro light pipe; the angle of the standard angle block is the same as the required included angle between the reflecting surface of the plane mirror in the plane set to be ground and the bottom plate;
the grinding unit comprises a grinding platform, a sliding bottom plate and N positioning screws, wherein N is equal to the number of bosses on the bottom plate of the plane mirror group to be ground;
the grinding platform is arranged on the working platform;
the sliding bottom plate is arranged on the grinding platform through a sliding assembly, and the sliding assembly is used for providing a guiding effect for the reciprocating linear motion of the sliding bottom plate on the grinding platform;
one end of the sliding bottom plate is provided with N pressing threaded holes, and the positions of the N pressing threaded holes correspond to the positions of bosses on the plane mirror group to be ground one by one;
the lower end face of each positioning screw is provided with a positioning column, and the outer diameter of each positioning column is smaller than that of each positioning screw;
n positioning screw respectively wear to establish in N compresses tightly the screw hole, and the reference column of N positioning screw lower extreme stretches into respectively and treats grinding in the N fixed orifices of level crossing group bottom plate upper surface, and N fixed orifices are located N bosss directly over respectively.
Further, the sliding assembly comprises at least 2 linear guide rails arranged on the grinding platform in parallel and a sliding block arranged on the linear guide rails;
the sliding bottom plate is arranged on the sliding block.
Further, the grinding unit also comprises a jacking screw;
the one end that sliding bottom plate was equipped with the pressure screw hole is equipped with and treats the recess of grinding level crossing unit frame looks adaptation, is equipped with the tight screw hole in top on the recess cell wall, the tight screw hole in top passes the tight screw hole in top and tightly pushes up the side at the picture frame for treat the fixed of grinding level crossing unit and sliding bottom plate, and treat the boss and the grinding platform contact of grinding level crossing unit bottom plate.
Further, the grinding unit also comprises a driving assembly for driving the sliding bottom plate to move.
Furthermore, a handle is arranged on the sliding bottom plate.
Further, the grinding unit further comprises a torque wrench for rotating the set screw.
Furthermore, scales are arranged on the torque wrench.
Furthermore, the positioning screw rod is in arc transition connection with the positioning column.
And simultaneously, the utility model provides a quick quantitative investigation method of mirror group inclination adopts the quick quantitative investigation device of above-mentioned mirror group inclination, and its special character lies in, including following step:
1) placing the standard angle block on a reference bottom plate, and adjusting the position of the standard angle block to align the reflecting surface of the standard angle block with the azimuth direction of the self-collimation measuring micro light pipe;
2) adjusting the pitching of the auto-collimation micro light pipe to enable the auto-collimation micro light pipe to be automatically pitched with the direction of the reflecting surface of the standard angle block, enabling the cross image at the center of the display to be superposed with the auto-collimation image reflected by the reflecting surface of the standard angle block, and fixing the auto-collimation micro light pipe;
3) taking down the standard angle block, placing the plane mirror group to be ground on the reference bottom plate, adjusting the position of the plane mirror group to be ground to align the plane mirror on the frame of the plane mirror group to be ground with the azimuth direction of the auto-collimation micro-light tube, reading out the error between the central cross image and the auto-collimation image reflected by the plane mirror on the plane mirror group to be ground through a display to obtain the pitch angle error of the plane mirror group to be ground and the auto-collimation micro-light tube, and determining the error direction;
4) taking down the plane mirror group to be ground and placing the plane mirror group on the grinding platform, wherein a bottom plate of the plane mirror group to be ground is positioned between the grinding platform and the sliding bottom plate, a positioning screw rod penetrates through a pressing threaded hole of the sliding bottom plate, and a positioning column of the positioning screw rod extends into a fixing hole in the upper surface of the bottom plate of the plane mirror group to be ground;
5) adjusting the moments of different positioning screws according to the pitch angle errors and the error directions in the step 3), which is as follows:
if the display shows that the self-alignment image reflected by the plane mirror on the picture frame of the plane mirror group to be ground is positioned above the central cross image of the display, according to the pitch angle error in the step 3), screwing the positioning screw to be attached to the fixed hole and tightly press the bottom plate of the plane mirror group to be ground, and the moment of the positioning screw far away from the picture frame is greater than that of the positioning screw close to the picture frame, so that the stress of a boss far away from the picture frame of the plane mirror group to be ground is greater than that of the boss close to the picture frame;
if the display shows that the self-alignment image reflected by the plane mirror on the plane mirror group to be ground is positioned below the central cross image of the display, according to the pitch angle error in the step 3), screwing the positioning screw to be attached to the fixed hole to press the bottom plate of the plane mirror group to be ground, wherein the moment of the positioning screw close to the mirror frame is larger than that of the positioning screw far away from the mirror frame, so that the stress of a boss of the plane mirror group to be ground, close to the mirror frame, is larger than that of the boss far away from the mirror frame;
6) driving the sliding bottom plate to reciprocate, so that a boss on the bottom plate of the plane mirror group to be ground is ground on the grinding platform;
7) after grinding is finished, taking down the plane mirror group to be ground, placing the plane mirror group on a reference bottom plate, adjusting the position of the plane mirror group to be ground to align the plane mirror of the plane mirror group to be ground with the azimuth direction of the auto-collimation micro-light measuring tube, judging whether a cross image at the center of a display is superposed with an auto-collimation image reflected by the plane mirror on the plane mirror group to be ground or not, and finishing grinding the plane mirror group to be ground if the cross image is superposed with the auto-collimation image; if the two images do not coincide, the display reads out the error of the pitching angle and determines the error direction, and the steps 4) to 6) are executed until the cross image at the center of the display coincides with the self-alignment image reflected by the plane mirror on the plane mirror group to be ground.
Compared with the prior art, the utility model has the advantages that:
1. the utility model discloses repair and grind device and method adjust the pitch angle of accurate self-collimation survey micro-lightpipe relative to the benchmark bottom plate (namely the calibration of self-collimation survey micro-lightpipe) through the calibration angle piece, will wait to grind the level crossing group and place on the benchmark bottom plate of test unit after the adjustment is accomplished, obtain waiting to grind the pitch angle error and the error direction of level crossing group and self-collimation survey micro-lightpipe; then will wait to grind the level crossing group and install on grinding unit to according to pitch angle error and error direction, the moment of adjustment sliding bottom plate both ends set screw is big or small different, make the higher position atress of boss be greater than the boss lower position, make the great boss grinding degree of atress great, wait to grind all boss lower surfaces of level crossing group whole at grinding platform grinding, the higher inclined plane of plane degree can be ground out to the whole lower surface of boss, the level crossing group of waiting to grind after the grinding is placed again on the test unit and is detected the grinding quality, the detection mode is simple and convenient.
2. The utility model can rapidly measure and calibrate the inclination angle of the plane mirror group through the testing unit consisting of the self-collimation measuring micro-light tube, the reference bottom plate and the standard angle block; and by adjusting the pressure of different positioning screws, the plane mirror group with different oblique angles can be ground, and the fast quantitative grinding of the mirror group can be realized.
3. The utility model discloses can be equipped with the tight screw in top on the sliding bottom plate, make and wait to grind level crossing group and sliding bottom plate fixed mutually, do not take place relative movement during the grinding, improve and grind the precision.
4. The utility model discloses accessible handle pulling sliding bottom plate slides, realizes treating the grinding of grinding level crossing unit bottom plate upper boss, and convenient operation saves the cost.
5. The utility model discloses also can slide through drive assembly drive sliding bottom, have the characteristics that grind fast, save time and laborsaving.
6. The utility model discloses different positioning screw pressure are adjusted to accessible torque wrench, and in order to improve the regulation precision, the last scale that is equipped with of torque wrench, but the pressure size of the different bosss of quick adjustment reaches the purpose that grinds out the oblique angle fast, need not adjust repeatedly, and then can improve the grinding efficiency and the precision of plane mirror group.
7. The utility model avoids the problem that the existing manual lens group is ground by directly pressing, and the grinding surface is not smooth easily; and the utility model discloses the grinding in-process mirror group generally can not contact the abrasive paste, and the cleanliness factor of grinding is higher.
8. The utility model discloses a plane to boss whole formation is ground, compares current manual work and presses the grinding, and the deformation of face type is little, and is less to subsequent optical system image quality influence.
9. The utility model discloses the mirror group after the grinding can directly detect on the test unit, need not to test in the system light path, promotes detection efficiency.
10. The utility model discloses grinder and method are suitable for simultaneously to the lens group, and application scope is wider.
Drawings
FIG. 1 is a first schematic view of a planar mirror assembly having an included angle of 90 degrees between a planar mirror to be ground and a base plate;
FIG. 2 is a schematic view of a second planar mirror assembly having an included angle of 90 degrees between a planar mirror to be ground and a bottom plate;
FIG. 3 is a schematic structural view of the device for rapidly and quantitatively repairing and grinding the inclination angle of the lens group according to the present invention;
fig. 4 is a schematic structural diagram of the fast and quantitative repairing and grinding device for the inclination angle of the lens group according to the present invention, in which a standard angle block is placed on the reference bottom plate (the standard angle block is used to establish the angular relationship between the self-collimating collimator and the reference bottom plate);
FIG. 5 is a schematic view of a testing structure of a polishing unit in the rapid quantitative lapping device for the inclination angle of the lens group according to the present invention;
FIG. 6 is a schematic view of a three-dimensional structure of a polishing unit in the rapid quantitative lapping device for the inclination angle of the lens group according to the present invention;
FIG. 7 is a schematic top view of a polishing unit of the rapid quantitative lapping apparatus for the inclination angle of the lens set of the present invention (not shown with a torque wrench);
FIG. 8 is a schematic diagram of the structure of the bottom plate of the flat mirror set to be ground pressed by the positioning screw of the grinding unit in the method of the present invention;
FIG. 9 is a schematic diagram of the method of the present invention for re-measuring the tilt angle of the plane mirror group by using the auto-collimation micro-light tube;
FIG. 10 is a schematic perspective view of the device for rapidly and quantitatively repairing and grinding the inclination angle of the mirror set of the present invention (the reference bottom plate and the grinding platform are both provided with a planar mirror set to be ground)
Wherein the reference numbers are as follows:
01-plane mirror group, 02-plane mirror, 03-bottom plate, 04-mirror frame, 05-boss, 06-mirror base;
1-a working platform, 2-a display, 3-a standard angle block, 4-a self-collimation measuring micro light pipe, 5-a reference bottom plate, 6-a grinding platform, 7-a linear guide rail, 8-a slide block, 9-a sliding bottom plate, 10-a handle, 11-a positioning screw rod, 111-a positioning column, 12-a jacking screw and 13-a torque wrench.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 3 and 10, a rapid and quantitative repairing and grinding device for the inclination angle of a lens group comprises a working platform 1, and a testing unit and a grinding unit disposed on the working platform 1.
As shown in fig. 4, the test unit includes an auto-collimation micro-light pipe 4, a standard angle block 3, a reference base plate 5 and a display 2; the auto-collimation micro-light measuring tube 4 is arranged on the reference bottom plate 5 and is used for measuring the inclination angle of the lens group and the bottom plate 03; the angle of the standard angle block 3 is the same as the required included angle between the reflecting surface of the plane mirror in the plane set to be ground and the bottom plate; the standard angle used for calibrating the autocollimation micro-light measuring tube 4 and the reference bottom plate 5; the display 2 is connected with the auto-collimation micro-light tube 4 and is used for displaying a central cross image and a reflected auto-collimation image of the auto-collimation micro-light tube 4 and obtaining a pitch angle error of the plane mirror unit 01 to be ground and the auto-collimation micro-light tube 4.
As shown in fig. 5 to 7, the polishing unit includes a polishing platen 6, a sliding assembly, a sliding bottom plate 9 and N positioning screws 11, where N is equal to the number of bosses 05 on a bottom plate 03 of a plane mirror group 01 to be polished, and in this embodiment, taking the plane mirror group 01 with three bosses 05 on the bottom plate 03 as an example shown in fig. 1, the number of the positioning screws 11 is three; the grinding platform 6 is arranged on the working platform 1, the sliding bottom plate 9 is arranged on the grinding platform 6 through a sliding assembly, and the sliding assembly is used for providing a guiding effect for the reciprocating linear motion of the sliding bottom plate 9 on the grinding platform 6; the sliding assembly comprises at least 2 linear guide rails 7 arranged on the grinding platform 6 in parallel and a sliding block 8 arranged on the linear guide rails 7, and a sliding bottom plate 9 is arranged on the sliding block 8; the direction of the arrow in fig. 7 is the reciprocating direction (i.e., the polishing direction) of the shoe 9.
As shown in fig. 2 and 8, three pressing threaded holes which are distributed in a triangular shape are formed in one end of the sliding bottom plate 9, which is matched with the plane mirror group 01 to be ground, and the positions of the three pressing threaded holes correspond to the positions of bosses 05 on a bottom plate 03 of the plane mirror group 01 to be ground one by one; a positioning column 111 is arranged on the lower end face of each positioning screw rod 11, the outer diameter of each positioning column 111 is smaller than that of each positioning screw rod 11, and each positioning screw rod 11 is in arc transition connection with each positioning column 111; correspondingly, the upper surface of the bottom plate of the plane mirror group 01 to be ground is provided with three fixing holes which are respectively positioned right above the three bosses 05; the three positioning screws 11 are respectively inserted into the three pressing threaded holes, and the positioning columns 111 at the lower ends of the three positioning screws 11 respectively extend into the three fixing holes in the surface of the plane mirror group 01 to be ground, so that the positioning screws can downwardly press the mirror group, and the positioning columns can extend into the fixing holes of the mirror group.
In the reciprocating motion process of sliding bottom plate 9, in order to improve the stability of treating grinding level crossing group 01, the grinding unit is still including top tight screw 12, sliding bottom plate 9 is equipped with the one end that compresses tightly the screw hole and is equipped with the recess, the width of recess slightly is greater than the width of treating grinding level crossing group 01 picture frame, be equipped with the tight screw hole in top on the recess cell wall, will treat that grinding level crossing group 01 sets up on grinding platform 6, and treat that the picture frame 04 of grinding level crossing group 01 wears to establish at the recess, the tight screw hole in top of top that passes sliding bottom plate 9 through top tight screw 12 pushes up at the side of treating grinding level crossing group 01 picture frame 04, will treat that grinding level crossing group 01 and sliding bottom plate 9 fix, this embodiment is treated grinding level crossing group 01 accessible positioning screw 11 and top tight screw 12 and is fixed on sliding bottom plate 9, and treat that. The torque wrench 13 is used for screwing the jacking screw 12, so that the plane mirror group 01 to be ground and the sliding bottom plate 9 are further fixed, relative movement does not occur during grinding, and the grinding precision is improved.
The sliding bottom plate 9 is provided with a handle 10, and the handle 10 can be pulled to enable the sliding bottom plate 9 to horizontally slide on the grinding flat plate, so that the boss 05 on the plane mirror group 01 to be ground can be ground. In other embodiments, the translational sliding of the skid plate 9 may also be achieved by a drive assembly.
The moment value of this embodiment through adjusting different positioning screw 11 makes and treats that different bosss 05 on the plane mirror group 01 bottom plate 03 of grinding bear different pressure, and translation sliding bottom plate 9 drives and treats the translation of grinding plane mirror group 01, plays the grinding effect for grinding the dull and stereotyped friction, because of different boss 05 position atress variation in size for different boss 05 grinding degree inconsistent obtains the plane mirror group 01 of treating that the bottom surface has the oblique angle. Further, the moment values of the different positioning screws 11 can be adjusted by the moment wrench 13 with scales, and the plane mirror group 01 with a quantitative inclination angle can be obtained after grinding. The device of the embodiment can summarize different torque sizes required by different oblique angles (pitching angle errors) through experiments, achieves the purpose of quantitative grinding, and improves the grinding efficiency.
The assembly process of the repairing and grinding device of the embodiment comprises the following steps: selecting proper positions on the working platform 1 according to the assembly and adjustment requirements, respectively fixing the reference bottom plate 5 and the grinding platform 6, and sequentially fixing the linear guide rail 7, the sliding block 8, the sliding bottom plate 9 and the handle 10 on the grinding flat plate; meanwhile, the auto-collimation micro-light tube 4 and the display 2 are placed on the reference bottom plate 5, and then the display 2 is connected with the auto-collimation micro-light tube 4.
Based on the above device for rapidly and quantitatively repairing and grinding the inclination angle of the lens group, the present embodiment provides a method for rapidly and quantitatively repairing and grinding the inclination angle of the lens group, which comprises the following steps:
1) taking the planar mirror group 01 shown in fig. 1 as an example, it requires that the included angle between the reflection surface of the plane mirror 02 and the bottom plate 03 is 90 °, so the standard angle block 3 is a 90 ° standard angle block, the standard angle block 3 is placed on the reference bottom plate 5, and the position of the standard angle block 3 is adjusted to align the reflection surface of the standard angle block 3 with the azimuth direction of the self-collimation measuring micro light pipe 4, that is, the reflection surface of the standard angle block 3 is located on the emergent light path of the self-collimation measuring micro light pipe 4;
2) adjusting the pitching of the auto-collimation micro-light tube 4 to make the auto-collimation of the auto-collimation micro-light tube 4 and the orientation pitching of the reflecting surface of the standard angle block 3, namely, the cross image at the center of the display 2 is superposed with the auto-collimation image reflected by the reflecting surface of the standard angle block 3, and fixing the auto-collimation micro-light tube 4; thus, the pitch angle relation between the auto-collimation micro-measuring light pipe 4 and the reference bottom plate 5 is established, the included angle between the reflecting surface of the plane mirror 02 of the plane mirror unit to be ground and the bottom plate 03 is different, and only the standard angle block 3 with different angles is selected and the pitch angle of the auto-collimation micro-measuring light pipe 4 is adjusted in adaptability;
3) taking down the standard angle block 3, placing the plane mirror group 01 to be ground on the reference bottom plate 5, adjusting the position of the plane mirror group 01 to be ground to align the reflecting surface of the plane mirror 02 on the plane mirror group 01 to be ground with the azimuth direction of the auto-collimation micro-metering tube 4, and obtaining the pitch angle error (the pitch angle error of the plane mirror group 01 to be ground relative to the reference bottom plate 5) of the plane mirror group 01 to be ground and the auto-collimation micro-metering tube 4 through the cross image in the center of the display 2 and the auto-collimation error reflected by the plane mirror 02 on the mirror frame 04 of the plane mirror group 01 to be ground; and determining the error direction, i.e. the self-alignment image is positioned above or below the cross image in the center of the display 2;
4) the plane mirror group 01 to be ground is taken down and placed on the grinding platform 6, a bottom plate 03 of the plane mirror group 01 to be ground is positioned between the grinding platform 6 and the sliding bottom plate 9, a mirror frame 04 of the plane mirror group 01 to be ground is arranged in the groove in a penetrating mode, a positioning screw rod 11 penetrates through a pressing threaded hole of the sliding bottom plate 9, a positioning column 111 at the lower end of the positioning screw rod 11 extends into a fixing hole to play a role in positioning the plane mirror group 01 to be ground, a pressing screw 12 penetrates through a pressing threaded hole in the side face of the sliding bottom plate 9 to be pressed against the side face of the mirror frame 04 of the plane mirror group 01 to be ground, and the plane mirror group 01 to be ground and the sliding bottom;
5) according to the pitch angle error and the error direction in step 3), compress tightly the plane mirror group 01 to be ground through continuously screwing the 11 attaching fixing holes of the positioning screw rod, so that the stress at the higher position of the boss 05 is greater than the lower position of the boss 05, the effect of grinding out an inclined plane is played, and the pressure adjustment of the positioning screw rod 11 is specifically as follows:
if the display 2 displays that the self-alignment image reflected back by the plane mirror 02 on the mirror frame 04 of the plane mirror group 01 to be ground is positioned above the central cross image of the display 2, the angle between the plane mirror 02 and the bottom plate 03 of the plane mirror group 01 to be ground is greater than 90 degrees, the grinding degree of the boss 05 on one side of the bottom plate 03 far away from the mirror frame 04 needs to be greater than that of the boss 05 on one side close to the mirror frame 04, so that according to the pitch angle error of the plane mirror group 01 to be ground and the self-alignment micrometer light pipe 4 in the step 3), the positioning screw 11 is screwed to be attached to the fixed hole to press the bottom plate 03 of the plane mirror group 01 to be ground tightly, the moment of the positioning screw 11 far away from the mirror frame 04 is greater than that of the positioning screw 11 close to the mirror frame;
if the display 2 displays that the self-alignment image reflected back by the plane mirror 02 on the mirror frame 04 of the plane mirror group 01 to be ground is positioned below the central cross image of the display 2, the angle between the plane mirror 02 and the bottom plate 03 of the plane mirror group 01 to be ground is less than 90 degrees, the grinding degree of the boss 05 at one side of the bottom plate 03 close to the mirror frame 04 needs to be less than that of the boss 05 at one side far away from the mirror frame 04, so that according to the pitch angle error of the plane mirror group 01 to be ground and the self-alignment micrometer light pipe 4 in the step 3), the positioning screw rod 11 is screwed to be attached to the fixed hole to press the bottom plate 03 of the plane mirror group 01 to be ground, the moment of the positioning screw rod 11 close to the mirror frame 04 is greater than that of the positioning screw rod 11 far away from the mirror frame;
6) the sliding bottom plate 9 reciprocates by pulling the handle 10, so that the boss 05 on the bottom plate 03 of the plane mirror group 01 to be ground is ground on the grinding platform 6 to form an inclined plane with higher flatness;
7) as shown in fig. 9, after the grinding is completed, the plane mirror group 01 to be ground is taken down and placed on the reference bottom plate 5, the position of the plane mirror group 01 to be ground is adjusted, so that the plane mirror 02 on the plane mirror group 01 to be ground is aligned with the direction of the self-collimating micrometer light pipe 4, whether the cross image at the center of the display 2 is superposed with the self-collimating image reflected by the plane mirror 02 on the plane mirror group 01 to be ground is judged, and if the cross image is superposed (within the error allowable range of the 90-degree included angle between the plane mirror 02 and the bottom plate), the grinding of the plane mirror group 01 to be ground; if the two images do not coincide, the display 2 reads out the pitch angle error and the error direction of the plane mirror group to be ground and the auto-collimation micro-light tube 4, and executes the steps 4) to 6) until the cross image at the center of the display 2 coincides with the auto-collimation image reflected by the plane mirror 02 on the plane mirror group 01 to be ground, and the grinding of the plane mirror group 01 to be ground is finished.
According to the method for repairing and grinding the plane mirror 02, the positioning screw 11 can be adjusted by using different moments through the moment wrench 13 according to the error of the pitching angle, and the included angle between the reflecting surface of the plane mirror 02 and the bottom plate 03 is 90 degrees; the moment difference of the positioning screws 11 on the two sides of the bottom plate 03 is related to the pitch angle error, generally speaking, the larger the pitch angle error is, the larger the moment difference is, and the moment difference of one-time adjustment needs to be within the bearing range of the bottom plate 03; if the moment difference is large, grinding for many times can be carried out by adjusting the moment of the positioning screw rod 11 for many times; the relationship among the magnitude of the moment, the grinding times and the error of the pitching angle can be determined by searching for the moment for many times, and the plane mirror group 01 with the required inclination angle can be directly ground without quantitative testing means. Meanwhile, the placement positions of the components are fixed, and after one set of plane mirror group 01 to be ground is completed, the next set of plane mirror group 01 to be ground can be ground conveniently. The angular relation formed by the auto-collimation micro-light measuring tube 4 and the reference bottom plate 5 is calibrated by regularly using a standard angle block, so that the grinding precision and consistency can be ensured. The method of the embodiment can quickly grind the angle of the plane mirror group 01, and compared with the traditional system debugging method for grinding and manual grinding, the efficiency can be improved by more than 5 times, and the consistency is higher.
In other embodiments, the autocollimation collimator 4 and the display 2 can be replaced by an autocollimation theodolite, and the angle calibration of the lens group can be realized through image point piercing.
The above description is only for the preferred embodiment of the present invention, and the technical solution of the present invention is not limited thereto, and any known modifications made by those skilled in the art on the basis of the main technical idea of the present invention belong to the technical scope to be protected by the present invention.
Claims (8)
1. The utility model provides a quick ration of mirror group inclination is repaiied and is ground device which characterized in that: comprises a working platform (1), and a testing unit and a grinding unit which are arranged on the working platform (1);
the test unit comprises a standard angle block (3), a reference bottom plate (5) and a display (2) which are arranged on the working platform (1), and a self-collimation micro light pipe (4) arranged on the reference bottom plate (5); the display (2) is connected with the auto-collimation micro light pipe (4) and is used for displaying a central cross image of the auto-collimation micro light pipe (4) and an auto-collimation image reflected back; the angle of the standard angle block (3) is the same as the required included angle between the reflecting surface of the plane mirror (02) in the plane mirror group (01) to be ground and the bottom plate (03);
the grinding unit comprises a grinding platform (6), a sliding bottom plate (9) and N positioning screws (11), wherein N is equal to the number of bosses (05) on the plane mirror group (01) to be ground;
the grinding platform (6) is arranged on the working platform (1);
the sliding bottom plate (9) is arranged on the grinding platform (6) through a sliding assembly, and the sliding assembly is used for providing a guiding effect for the reciprocating linear motion of the sliding bottom plate (9) on the grinding platform (6);
one end of the sliding bottom plate (9) is provided with N pressing threaded holes, and the positions of the N pressing threaded holes correspond to the positions of bosses (05) on the plane mirror group (01) to be ground one by one;
a positioning column (111) is arranged on the lower end face of each positioning screw rod (11), and the outer diameter of each positioning column (111) is smaller than that of each positioning screw rod (11);
n positioning screws (11) are respectively arranged in the N pressing threaded holes in a penetrating mode, positioning columns (111) at the lower ends of the N positioning screws (11) respectively extend into N fixing holes in the upper surface of a bottom plate (03) of a plane mirror group (01) to be ground, and the N fixing holes are respectively located right above the N bosses (05).
2. The apparatus for rapidly and quantitatively repairing and grinding the inclination angle of a lens group according to claim 1, wherein: the sliding assembly comprises at least 2 linear guide rails (7) which are arranged on the grinding platform (6) in parallel and a sliding block (8) arranged on the linear guide rails (7);
the sliding bottom plate (9) is arranged on the sliding block (8).
3. The apparatus for rapidly and quantitatively repairing and grinding the inclination angle of a lens group as claimed in claim 2, wherein: the grinding unit further comprises a jacking screw (12);
sliding bottom plate (9) are equipped with the one end that compresses tightly the screw hole and are equipped with and wait to grind the recess of level crossing group (01) picture frame (04) looks adaptation, are equipped with the tight screw hole in top on the groove wall, top tight screw (12) pass the tight screw hole in top and tightly in the side of picture frame (04) for wait to grind the fixed of level crossing group (01) and sliding bottom plate (9), and wait to grind boss (05) and the contact of grinding platform (6) of level crossing group (01) bottom plate (03).
4. The apparatus for rapidly and quantitatively repairing and grinding the inclination angle of a lens group as claimed in claim 3, wherein: the grinding unit also comprises a driving assembly for driving the sliding bottom plate (9) to move.
5. The apparatus for rapidly and quantitatively repairing and grinding the inclination angle of a lens group as claimed in claim 3, wherein: and a handle (10) is arranged on the sliding bottom plate (9).
6. The apparatus for rapidly and quantitatively examining the inclination angle of a lens group according to any one of claims 1 to 5, wherein: the grinding unit further comprises a torque wrench (13) for rotating the positioning screw (11).
7. The apparatus for rapidly and quantitatively repairing and grinding the tilt angle of a lens group as claimed in claim 6, wherein: the torque wrench (13) is provided with scales.
8. The apparatus for rapidly and quantitatively repairing and grinding the inclination angle of a lens group as claimed in claim 7, wherein: the positioning screw rod (11) is in arc transition connection with the positioning column (111).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021320818.9U CN212735553U (en) | 2020-07-07 | 2020-07-07 | Quick quantitative repairing and grinding device for inclination angle of lens group |
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|---|---|---|---|
| CN202021320818.9U CN212735553U (en) | 2020-07-07 | 2020-07-07 | Quick quantitative repairing and grinding device for inclination angle of lens group |
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| CN212735553U true CN212735553U (en) | 2021-03-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111890219A (en) * | 2020-07-07 | 2020-11-06 | 中国科学院西安光学精密机械研究所 | Rapid and quantitative repairing and grinding device and method for inclination angle of lens group |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111890219A (en) * | 2020-07-07 | 2020-11-06 | 中国科学院西安光学精密机械研究所 | Rapid and quantitative repairing and grinding device and method for inclination angle of lens group |
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