CN107894216B - Adsorption positioning eccentric detector - Google Patents
Adsorption positioning eccentric detector Download PDFInfo
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- CN107894216B CN107894216B CN201711332875.1A CN201711332875A CN107894216B CN 107894216 B CN107894216 B CN 107894216B CN 201711332875 A CN201711332875 A CN 201711332875A CN 107894216 B CN107894216 B CN 107894216B
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- tray
- positioning
- air inlet
- tray body
- lens
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
Abstract
The invention discloses an adsorption positioning eccentric detector, and relates to the field of lens precision detection. The invention comprises a base, a light beam emitter, an adsorption positioning tray and a microscope which are sequentially arranged from bottom to top, wherein the light beam emitter, the adsorption positioning tray and the microscope are coaxial, the adsorption positioning tray comprises a mirror surface supporting shoulder arranged on the top surface of a tray body and bottom glass arranged on the bottom surface, so that a cavity in the tray body becomes a closed space after a lens to be detected is placed, an air inlet device is arranged on the outer side surface of the tray body, the air inlet device stops rotating when rotating to a positioning plugboard arranged on an air inlet hole of a box body, at the moment, the air inlet device and the air inlet hole are in the same straight line, and an air pipe of a vacuum pump arranged outside the external adsorption positioning tray is inserted into the air inlet device to vacuumize the inside of the tray body, so that the lens to be detected is tightly attached to the lens supporting shoulder due to negative pressure. The invention improves the fastening mode of the lens to be detected on the positioning tray, reduces the offset of the lens to be detected when rotating, and further improves the detection precision.
Description
Technical Field
The invention relates to the field of lens precision detection, in particular to an adsorption positioning eccentric detector
Background
In the process of manufacturing and forming the lens, the polished rough lens blank has the problem of insufficient precision, and the rough lens blank needs to be cored. The term "core" means a process of cutting the outer edge of a lens to obtain a core conforming to a standard, based on the reference surface of the lens, the magnitude of the curvature R value of the curved surface, and the magnitude of the thickness H value of the curved surface.
In the process of core taking, a series of physical quantities need to be measured, wherein the deviation of the optical axis of the lens from the geometric axis of the lens is called as eccentric quantity, and the larger the eccentric quantity is, the smaller the accuracy of the lens is, so that the detection of the eccentric quantity in the process of core taking is particularly important, and in the prior art, the eccentric quantity of the lens is detected by an eccentric detector (also called as a centering instrument). The eccentric detector is divided into a transmission type detector and a reflection type detector, wherein the transmission type detector adopts the principle that a given light source irradiates a cross lens, light beams which are parallel and divergent through a collimating lens penetrate through the lens to be measured, images are formed on a microscope, the deviation of the cross formed by observation of the microscope are utilized, and reading is read through a dividing plate with scales; in the reflection type, after the light source passes through the cross lens, the lens to be measured is irradiated through the spectroscope, and the lens to be measured is reflected back to the spectroscope to form an auto-collimation image and then is injected into a microscope. In order to improve the detection accuracy, the lens to be measured is usually set to rotate on a tray to measure the average shift amount of the optical axis.
However, in the prior art, the fixing manner of the lens to be measured on the tray is not reliable, and a certain offset exists in the rotating process, so that the position of the optical axis of the lens to be measured is not fixed, and the accuracy of the eccentric amount is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing an adsorption positioning eccentric detector which is used for solving the problem that the fixing mode of a lens in the prior art is unreliable and effectively improving the detection precision.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an adsorption positioning eccentric detector is designed and comprises a base, a light beam emitter, an adsorption positioning tray, a microscope and a support column; the light beam emitter is fixedly connected to the center of the base, the adsorption positioning tray is positioned above the light beam emitter by a connecting rod, the support column is fixedly connected to the middle rear part of the base, the microscope is arranged on the support column and is positioned above the adsorption positioning tray, and the light beam emitter, the adsorption positioning tray and the optical axis of the microscope are coaxial; the adsorption positioning tray comprises a box body, a tray gear, a motor seat and a positioning plugboard, wherein the tray body is arranged on the left side inside the box body, the tray body is a two-section hollow cylinder, the outer diameter of an upper section cylinder is smaller than that of a lower section cylinder, the tray gear is arranged on the upper section cylinder of the tray body, and an air inlet device is arranged on the side surface of the lower section cylinder of the tray body; the motor is arranged on the right side of the box body through a motor seat, the motor gear is arranged on a motor shaft of the motor, and the tray gear is meshed with the motor gear; the center of the upper end face of the tray body is provided with a lens supporting shoulder which is concave in a cylindrical shape, the lens supporting shoulder is coaxial with the tray body, the upper end face of the lens supporting shoulder is lower than the upper end face of the tray body, the center of the lower end of the tray body is provided with a bottom hole, bottom hole glass is arranged in the bottom hole, and the side face of the lower section column body of the tray body is provided with an air inlet device; the left side face of the box body is provided with an air inlet hole, the positioning plugboard is arranged on the air inlet hole, the bottom of the air inlet hole is provided with a groove, the groove comprises a first groove and a second groove, the lower end of the positioning plugboard is provided with a clamping column, and the size of the clamping column is consistent with that of the groove;
the vacuum pump is arranged on the left side of the base, the vacuum pump is provided with an air pipe, and the air pipe enters the inside of the box body through the air inlet hole and is connected with the air inlet device.
As a further improvement of the scheme, the air inlet device is an inflating valve, the inflating valve comprises a lining, an air core, a spring seat and a spring, the lining is arranged in the inflating valve, the air core is arranged in the lining, a valve is annularly extended out of the lower end of the air core and is positioned outside the lining, the spring seat is fixedly connected to the middle part of the air core, one end of the spring is connected with the spring seat, and the other end of the spring is connected with the valve; the air pipe is also provided with an air pipe cap, and the center of the air pipe cap is provided with a compression bar.
As a further improvement of the scheme, the outer surface of the inflating valve is provided with external threads, and the inner surface of the cap body of the air pipe cap is provided with internal threads.
As a further improvement of the scheme, the ocular on the microscope is replaced by a charge coupled element, and the charge coupled element is also electrically connected with a display.
As a further improvement of the scheme, the microscope is connected with the support column through a connecting frame, the right end of the connecting frame is further provided with a lifting adjusting knob, and the left end of the connecting frame is provided with a locking knob.
As a further improvement of the solution, the support column is further provided with a guide rail, the guide surface of which faces the microscope.
As a further improvement of the scheme, a limiting block is further arranged at the upper end of the guide rail.
As a further improvement of the scheme, the thickness of the bottom hole glass is smaller than 2mm.
As a further improvement of the scheme, the tray body is further provided with a gear shaft shoulder, and the gear shaft shoulder is arranged between the upper section cylinder and the lower section cylinder of the tray body.
As a further improvement of the scheme, a key groove is formed at the joint of the tray body and the tray gear, and the tray body is matched with the tray gear through a flat key arranged in the key groove.
By adopting the technical scheme, because the adsorption type positioning tray is adopted, after the lens to be detected is mounted on the lens support shoulder, the whole cavity inside the tray body is closed, the air inlet device arranged on the side surface of the tray body can be connected with an external vacuum pump, and the vacuum pump can vacuumize the inside of the tray body, so that the lens to be detected on the lens support shoulder is stably positioned; the tray body is divided into an upper section and a lower section, and the upper section is fixedly connected with a tray gear to be matched with a prime mover mechanism, so that the whole tray body can rotate stably. The invention solves the problem of unstable positioning of the lens to be measured of the eccentric detector on the market, and further improves the measurement precision.
Drawings
FIG. 1 is a diagram of an adsorption positioning eccentric detector in an embodiment of the invention;
FIG. 2 is a right side view of the adsorption positioning eccentricity detector according to the embodiment of the invention;
FIG. 3 is a left side view of an adsorption positioning tray according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of A-A of an adsorption positioning tray according to an embodiment of the invention;
FIG. 5 is an enlarged view of the portion B of the embodiment of the present invention;
FIG. 6 is an internal structural view of a valve in an embodiment of the present invention;
FIG. 7 is an internal structural view of a gas cap in an embodiment of the present invention;
fig. 8 is a structural diagram of an optimized adsorption positioning eccentricity detector in an embodiment of the present invention.
In the figure, the device comprises a 1-base, a 2-beam emitter, a 3-adsorption positioning tray, a 4-microscope, a 5-vacuum pump, a 6-supporting column, a 7-display, an 8-lens to be detected, a 31-box, a 32-tray body, a 321-lens supporting shoulder, a 322-bottom hole glass, a 323-air inlet device, a 324-bushing, a 325-air core, a 326-valve, a 327-spring seat, a 328-spring, a 33-air inlet hole, a 331-positioning inserting plate, a 332-clamping column, a 34-groove, a 341-first groove, a 342-second groove, a 35-tray gear, a 36-motor gear, a 37-motor, a 38-motor seat, a 41-charge coupling element, a 42-lifting adjusting knob, a 43-locking knob, a 44-limiting block, a 51-air pipe, a 52-air nozzle cap and a 53-pressing rod.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 and 2, the adsorption positioning eccentric detector comprises a base 1, a light beam emitter 2, an adsorption positioning tray 3, a microscope 4 and a support column 6; the light beam emitter 2 is fixedly connected to the center of the base 1, the adsorption positioning tray 3 is positioned above the light beam emitter 2 by a connecting rod, the supporting column 6 is fixedly connected to the middle rear part of the base 1, the microscope 4 is arranged on the supporting column 6 and is positioned above the adsorption positioning tray 3, and the light axes of the light beam emitter 2, the adsorption positioning tray 3 and the microscope 4 are coaxial; as shown in fig. 3 and 4, the adsorption positioning tray 3 includes a box 31, a tray 32, a tray gear 35, a motor gear 36, a motor 37, a motor base 38 and a positioning plug 331, wherein the tray 32 is mounted on the left side of the inside of the box 31, the tray 32 is a two-section hollow cylinder, the outer diameter of the upper section cylinder is smaller than that of the lower section cylinder, the tray gear 35 is mounted on the upper section cylinder of the tray 32, and an air inlet device 323 is arranged on the side surface of the lower section cylinder of the tray 32; the motor 37 is arranged on the right side of the box body 31 through a motor seat 38, the motor gear 36 is arranged on a motor shaft of the motor 37, and the tray gear 35 is meshed with the motor gear 36; the center of the upper end of the tray body 32 is provided with a lens supporting shoulder 321 which is concave in a cylindrical shape, the lens supporting shoulder 321 is coaxial with the tray body 32, the upper end surface of the lens supporting shoulder 321 is lower than the upper end surface of the tray body 32, the center of the lower end of the tray body 32 is provided with a bottom hole, and bottom hole glass 322 is arranged in the bottom hole; an air inlet hole 33 is formed in the left side surface of the box body 31, the positioning plug plate 331 is mounted on the air inlet hole 33, a groove 34 is formed in the bottom of the air inlet hole 33, the groove 34 comprises a first groove 341 and a second groove 342, a clamping column 332 is arranged at the lower end of the positioning plug plate 331, and the size of the clamping column 332 is consistent with that of the groove 34;
the vacuum pump 5 is arranged on the left side of the base 1, the vacuum pump 5 is provided with an air pipe 51, and the air pipe 41 enters the inside of the box body 31 through the air inlet hole 33 and is connected with the air inlet device 323.
Before use, the positioning posts 332 of the positioning plug 331 are clamped at the positions of the first grooves 341; when in use, the positioning plug plate 331 is lifted upwards in the air inlet hole 33 for a certain distance, then goes deep into the box 31 for a certain distance, and then the positioning plug plate 331 is put down, and the clamping column 332 is clamped at the position of the second groove 342; at this time, the tray body 32 is rotated again, when the air inlet device 323 on the outer surface of the tray body 32 rotates to the position of the clamping column 332, the air inlet device 323 is blocked by the clamping column 332 and cannot rotate continuously, at this time, the air pipe 51 of the external vacuum pump 5 is inserted, the vacuum pumping operation is performed, the interior of the tray body 32 forms a closed space due to the fact that the lens 8 to be detected is placed, the vacuum pumping operation can be ensured, and when the internal air pressure is continuously reduced, the fitting between the lens 8 to be detected and the lens support shoulder 321 is more and more tight; after the vacuum pumping is completed, the motor 37 is started, the tray body 32 is continuously rotated through gear meshing, at the moment, the light source emitted by the light beam emitter 2 is turned on again, so that the deviation degree of the cross image can be observed on a microscope, and the reading is read according to the reticle.
Further, as shown in fig. 5, the air inlet device is an air valve, and the air valve comprises a bushing 324, an air core 325, a spring seat 327 and a spring 328, wherein the bushing 324 is installed inside the air valve, the air core 325 is installed inside the bushing 324, a valve 326 extends out of the lower end ring of the air core 325 in a ring shape, the valve 326 is positioned outside the bushing 324, the spring seat 327 is fixedly connected in the middle of the air core 325, one end of the spring 328 is connected with the spring seat 327, and the other end of the spring 328 is connected with the valve 326; as shown in fig. 5 to 7, the air pipe 51 is further provided with an air pipe cap 52, and a compression rod 53 is provided at the center of the air pipe cap 52.
The valve 326 is kept closed by the spring 328 under the action of the air core 325 inside the valve mouth without external force, and the valve 326 is opened when the air core 325 is pressed down by the pressing rod 53 at the center of the air cap 52.
The structural design can lead the air pipe 51 to be connected with an air inlet device simply, conveniently and quickly, and can not leak air during vacuum inhalation.
Further, the outer surface of the valve is provided with external threads, and the inner surface of the cap body of the tracheal cap 52 is provided with internal threads.
The valve is connected with the air pipe cap 52 through threads, so that the valve cannot fall off when vacuum is sucked.
Further, as shown in fig. 7, the eyepiece 4 on the microscope is replaced with a charge-coupled device 41, and the charge-coupled device 41 is further electrically connected with the display 7.
The CCD 41 can convert the optical signal into electric signal, and then the transmitted signal is converted to display 7 for amplifying display, so that the adjustment and reading are more accurate.
Further, the microscope 4 is connected with the support column 6 through a connecting frame, the right end of the connecting frame is further provided with a lifting adjusting knob 42, and the left end of the connecting frame is provided with a locking knob 43.
The elevation adjustment knob 42 can adjust the height of the microscope 4 so that it is convenient to adjust when detecting, and the locking knob 43 is used for locking after adjustment.
Further, the support column 6 is provided with a guide rail, and a guide surface of the guide rail faces the microscope 4.
The microscope 4 moves up and down on the guide rail, so that friction is reduced, and the service life is prolonged.
Further, a limiting block 44 is further arranged at the upper end of the guide rail.
When the worker is adjusting the distance, the eyes are focused on the eyepieces, which may cause the microscope 4 to be adjusted too high to slide out of the guide rail, and the limiting block 44 can effectively avoid the situation.
Further, the bottom hole glass 322 has a thickness of less than 2mm.
Since the bottom hole glass 322 needs to pass through the light source, in order to avoid the influence of excessive refraction generated when the light beam passes through the light source on the detection result, the thickness of the bottom hole glass 322 is limited to be less than 2mm, and the detection precision is further improved.
Further, a gear shaft shoulder is further disposed on the tray 32, and the gear shaft shoulder is disposed between the upper and lower cylinders of the tray.
The tray gear 35 is mounted on the upper column of the tray body 32, and a gear shaft shoulder is arranged to abut against the bottom surface of the tray gear 35, so that the tray gear 35 is not in direct contact with the upper top surface of the lower column of the tray body 32.
Further, a key groove is formed at the joint of the tray body 32 and the tray gear 35, and the tray body and the tray gear are matched through a spline arranged in the key groove.
Due to the larger diameter of the tray body 32, the provision of a spline fit improves the stability of the fit for further optimization of the transmission capacity.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.
Claims (7)
1. An adsorption positioning eccentric detector comprises a base, a light beam emitter, an adsorption positioning tray, a microscope and a support column; the light beam emitter is fixedly connected to the center of the base, the adsorption positioning tray is positioned above the light beam emitter by a connecting rod, the support column is fixedly connected to the middle rear part of the base, the microscope is arranged on the support column and is positioned above the adsorption positioning tray, and the light beam emitter, the adsorption positioning tray and the optical axis of the microscope are coaxial; the method is characterized in that: the adsorption positioning tray comprises a box body, a tray gear, a motor seat and a positioning plugboard, wherein the tray body is arranged on the left side inside the box body, the tray body is a two-section hollow cylinder, the outer diameter of an upper section cylinder is smaller than that of a lower section cylinder, the tray gear is arranged on the upper section cylinder of the tray body, and an air inlet device is arranged on the side surface of the lower section cylinder of the tray body; the motor is arranged on the right side of the box body through a motor seat, the motor gear is arranged on a motor shaft of the motor, and the tray gear is meshed with the motor gear; the novel glasses comprise a tray body, wherein a lens supporting shoulder which is concave in a cylindrical shape is arranged in the center of the upper end face of the tray body, the lens supporting shoulder is coaxial with the tray body, the upper end face of the lens supporting shoulder is lower than the upper end face of the tray body, a bottom hole is formed in the center of the lower end of the tray body, bottom hole glass is arranged in the bottom hole, an air inlet hole is formed in the left side face of the box body, a positioning inserting plate is arranged on the air inlet hole, a groove is formed in the bottom of the air inlet hole, the groove comprises a first groove and a second groove, a clamping column is arranged at the lower end of the positioning inserting plate, and the size of the clamping column is consistent with that of the groove;
the vacuum pump is arranged on the left side of the base, and is provided with an air pipe which enters the inside of the box body through the air inlet hole and is connected with the air inlet device;
the air inlet device is an air valve, the air valve comprises a bushing, an air core, a spring seat and a spring, the bushing is arranged in the air valve, the air core is arranged in the bushing, a valve is annularly extended out of the lower end of the air core and is positioned outside the bushing, the spring seat is fixedly connected to the middle part of the air core, one end of the spring is connected with the spring seat, and the other end of the spring is connected with the valve; the air pipe is also provided with an air pipe cap, and the center of the air pipe cap is provided with a compression bar;
the outer surface of the inflating valve is provided with external threads, and the inner surface of the cap body of the air pipe cap is provided with internal threads;
the tray body with tray gear junction is provided with the keyway, the tray body with tray gear is through setting up the parallel key cooperation of keyway.
2. The adsorptive positioning eccentric detector of claim 1, wherein: the eyepiece on the microscope is replaced by a charge coupled device, and the charge coupled device is also electrically connected with a display.
3. The adsorptive positioning eccentric detector of claim 1, wherein: the microscope is connected with the support column through the link, the link right-hand member still is provided with lift adjust knob, the link left end is provided with locking knob.
4. The adsorption positioning eccentricity detector according to claim 3, wherein: the support column also is provided with a guide rail, and the guide surface of the guide rail faces the microscope.
5. The adsorptive positioning eccentric detector of claim 4, wherein: the upper end of the guide rail is also provided with a limiting block.
6. The adsorptive positioning eccentric detector of claim 1, wherein: the thickness of the bottom hole glass is smaller than 2mm.
7. The adsorptive positioning eccentric detector of claim 1, wherein: the tray body is also provided with a gear shaft shoulder which is arranged between the upper section cylinder and the lower section cylinder of the tray body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711332875.1A CN107894216B (en) | 2017-12-13 | 2017-12-13 | Adsorption positioning eccentric detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711332875.1A CN107894216B (en) | 2017-12-13 | 2017-12-13 | Adsorption positioning eccentric detector |
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| Publication Number | Publication Date |
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| CN107894216A CN107894216A (en) | 2018-04-10 |
| CN107894216B true CN107894216B (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711332875.1A Active CN107894216B (en) | 2017-12-13 | 2017-12-13 | Adsorption positioning eccentric detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112493673B (en) * | 2020-10-20 | 2021-12-07 | 安徽威斯贝尔智能科技有限公司 | Conference room demonstration platform based on 5G function control |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04248507A (en) * | 1991-02-04 | 1992-09-04 | Matsushita Electric Ind Co Ltd | Device and method for lens alignment |
| JP2003039292A (en) * | 2001-07-23 | 2003-02-12 | Olympus Optical Co Ltd | Lens centering device |
| JP2006330210A (en) * | 2005-05-24 | 2006-12-07 | Olympus Corp | Method and device for collimating lens |
| CN101373167A (en) * | 2007-08-24 | 2009-02-25 | 鸿富锦精密工业（深圳）有限公司 | System and method for detecting eccentricity of glasses lens |
| CN104833320A (en) * | 2015-05-22 | 2015-08-12 | 丹阳丹耀光学有限公司 | Reflection-transmission eccentric instrument test platform and reflection-transmission eccentric instrument |
| CN207528195U (en) * | 2017-12-13 | 2018-06-22 | 江西佳鼎光电科技有限公司 | Adsorb location eccentricity detector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7046351B2 (en) * | 2002-05-20 | 2006-05-16 | Pentax Corporation | Method and apparatus for measuring eccentricity of optical lens, and method and apparatus for centering and edging optical lens |
-
2017
- 2017-12-13 CN CN201711332875.1A patent/CN107894216B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04248507A (en) * | 1991-02-04 | 1992-09-04 | Matsushita Electric Ind Co Ltd | Device and method for lens alignment |
| JP2003039292A (en) * | 2001-07-23 | 2003-02-12 | Olympus Optical Co Ltd | Lens centering device |
| JP2006330210A (en) * | 2005-05-24 | 2006-12-07 | Olympus Corp | Method and device for collimating lens |
| CN101373167A (en) * | 2007-08-24 | 2009-02-25 | 鸿富锦精密工业（深圳）有限公司 | System and method for detecting eccentricity of glasses lens |
| CN104833320A (en) * | 2015-05-22 | 2015-08-12 | 丹阳丹耀光学有限公司 | Reflection-transmission eccentric instrument test platform and reflection-transmission eccentric instrument |
| CN207528195U (en) * | 2017-12-13 | 2018-06-22 | 江西佳鼎光电科技有限公司 | Adsorb location eccentricity detector |
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