CN112254690A - Jig device and detection method for intelligently detecting center thickness of lens - Google Patents
Jig device and detection method for intelligently detecting center thickness of lens Download PDFInfo
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- CN112254690A CN112254690A CN202011265515.6A CN202011265515A CN112254690A CN 112254690 A CN112254690 A CN 112254690A CN 202011265515 A CN202011265515 A CN 202011265515A CN 112254690 A CN112254690 A CN 112254690A
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- lens
- jig device
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- centering
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- General Physics & Mathematics (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a jig device and a detection method for intelligently detecting the center thickness of a lens, wherein the jig device comprises a cylindrical upper turntable, a lower turntable, a sliding block and a V-shaped centering block for lens centering, the upper surface of the cylindrical upper turntable is provided with two T-shaped guide grooves matched with the V-shaped centering block, the two T-shaped guide grooves are in a centrosymmetric structure, the lower surface of the V-shaped centering block is arranged in the T-shaped guide grooves, the upper surface of the lower turntable is provided with two linear guide grooves which are parallel to each other, the bottom of the sliding block is rotatably arranged in the linear guide grooves, and the top of the sliding block is fixedly connected in the V-shaped centering block. The invention can not only achieve the purposes of reliably clamping the lens, reducing the measurement cost, improving the production efficiency and reducing the labor intensity of workers, but also ensure the centering precision through the v-shaped centering block and improve the measurement precision.
Description
Technical Field
The invention belongs to the technical field of optical lens detection, and particularly relates to a jig device and a detection method for intelligently detecting the center thickness of a lens.
Background
The optical lens has wide applications in various fields, such as industrial detection, security monitoring, national defense and military, and the like, and the central thickness of the lens is an important parameter of the optical lens, which has great influence on the focal length of the optical lens and the imaging quality of an optical system. Digital lenses, aerial cameras, etc. also have strict requirements on the center thickness of the lens.
Whether the processing of the central thickness of the lens meets the requirements or not needs high-precision measurement equipment to measure the central thickness of the lens. Therefore, in actual production, the lens needs to be detected for multiple times in the processing process and after the processing is finished, how to improve the production efficiency in the multiple detection, reduce the labor intensity of workers and avoid damaging the surface of the lens is always concerned widely.
Most of the existing contact measurement of the central thickness of the lens needs to replace the clamp according to different types of lenses, a micrometer or a dial gauge is generally used for measurement, and meanwhile, manual and pure manual operation is needed. There are two disadvantages when using this method for measurement: firstly, measurement efficiency is lower, secondly anchor clamps cost of manufacture is high and measurement accuracy is not high.
In the patent with publication number CN 204276947U, a three-jaw chuck capable of being used as an optical lens thickness detection clamping device is disclosed, which is convenient for clamping an optical lens, can ensure that the optical lens is located at the center position of an object carrying groove, and is convenient for measurement, but has higher requirement on the matching precision of the device in practical application, and also provides higher requirement on the manufacturing process; in addition, in practical tests, the three-jaw structure in the device has lower centering precision than that of the v-shaped centering block.
Patent publication No. CN 209945266U discloses an optical lens thickness detection device. The device can basically realize reliable clamping of the optical lens, thereby also providing a thickness detection system; however, the internal structure of the device is complicated, and the connectability with the existing device is poor.
Therefore, in order to realize that the fixture is convenient to assemble and disassemble during thickness detection, the operability is improved, the measurement cost is reduced, and the measurement efficiency is improved, a jig device with high efficiency and high precision is necessary to be researched and developed for detecting the central thickness of the lens.
Disclosure of Invention
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a tool device for intellectual detection system lens center thickness, by cylindrical carousel, be used for the V type centering piece, lower carousel, vertical cylindrical support portion and the horizontally rectangle rotating part of lens centering to constitute.
The cylindrical upper rotary table is of a hollow shell type structure, two T-shaped guide grooves which are of a central symmetry structure are formed in the upper surface of the cylindrical upper rotary table, and a circle of mounting groove is formed in the inner surface of the cylindrical upper rotary table.
The V-shaped centering block is provided with a V-shaped groove matched with the lens, the lens is placed in the V-shaped groove, the centering purpose can be quickly achieved, and meanwhile, the clamping reliability can be guaranteed; the V-shaped centering block is arranged in a T-shaped guide groove of the cylindrical upper turntable and can do linear motion along the T-shaped guide groove; and the bottom of the V-shaped centering block is provided with a cylindrical hole for transitional connection of the V-shaped centering block and the cylindrical supporting part.
The outer surface of the lower rotary table is provided with edge protrusions in transition fit with the inner surface mounting grooves of the cylindrical upper rotary table, and the cylindrical upper rotary table is connected with the lower rotary table in such a way, so that the lower rotary table can rotate in the cylindrical upper rotary table.
The upper surface of the lower turntable is provided with two linear guide grooves which are parallel to each other; the rectangular rotating part is arranged in the linear guide groove and can do linear motion along the linear guide groove.
The upper end of cylindrical support portion is transitional coupling in V type centering piece, the lower extreme of cylindrical support portion is fixed in the central point of rectangle rotating part and puts for the rotary motion of cylindrical upper turntable and lower turntable passes through the linear motion of rectangle rotating part and converts the tight centering motion of clamp of V type centering piece into.
A detection method for intelligently detecting the center thickness of a lens comprises the following specific operation steps:
1) detecting the clamping precision of the jig device, if the error is within an allowable range, indicating that the clamping precision of the jig device meets the requirement, and continuing to perform the test;
2) putting the lens to be measured into a jig device, driving the cylindrical upper rotary table and the cylindrical lower rotary table to rotate relatively by a motor, driving the sliding block to do linear motion in the linear guide groove at the moment, and driving the v-shaped centering block to approach to the center along the linear guide groove through the matching of the cylindrical supporting part to finish the centering and tightening of the lens;
3) the upper and lower measuring probes move until the upper and lower surfaces of the lens are contacted with each other, the central thickness of the lens is measured and fed back to the sensor, and data are uploaded;
4) after the measurement is finished, the upper and lower measuring probes and the v-shaped centering block are reset, the lens is taken down, and the next measurement is waited.
The specific detection steps of the step 1) are as follows: and (3) putting the lens with the standard thickness into a jig device, rotating the lower turntable to enable the V-shaped centering block to approach the lens until the lens is clamped tightly, then moving the upper and lower measuring probes, stopping moving when the upper and lower measuring probes are respectively contacted with the lens, measuring the center thickness of the lens of the standard sample piece, comparing the obtained value with a standard value, and if the error is within an allowable range, indicating that the clamping precision of the clamp meets the requirement.
The invention has the beneficial effects that:
1. the invention can not only achieve the purposes of reliably clamping the lens, reducing the measurement cost, improving the production efficiency and reducing the labor intensity of workers, but also ensure the centering precision through the v-shaped centering block and improve the measurement precision;
2. the jig device is low in cost, convenient to assemble and disassemble and strong in operability;
3. the detection method of the invention utilizes the intelligent coordination of the main control system, thereby greatly reducing the operation steps of workers, reducing the labor intensity of the workers and simultaneously reducing the probability of workpiece surface scratching and inaccurate measurement caused by misoperation;
4. the sensor is used for clamping and measuring the lens, so that the reading time and the data recording time of workers are saved, the working time is shortened, and the detection efficiency is improved;
5. the movability of the v-shaped centering block ensures higher adaptability of the jig device, can finish centering and clamping operations on lenses with different calibers, and has wide application range;
6. the slide block and the v-shaped centering block are detachably connected, so that the slide block and the v-shaped centering block can be conveniently replaced, and the cost is saved;
7. the v-shaped centering block effectively ensures the centering of the lens, and when the lens is measured in a contact mode, the contact point is accurately positioned at the central part of the lens, and certain lens edge constraint is provided, so that the lens is prevented from shaking in the measuring process, and the measuring precision is ensured.
Drawings
Fig. 1 is a schematic view of the overall structure of the jig device of the present invention.
Fig. 2 is an exploded view of the jig device of the present invention.
Fig. 3 is a schematic longitudinal sectional view of the cylindrical upper turntable of the present invention.
In the figure: 1. v type centering piece, 2, cylindrical carousel on, 3, slider, 4, lower carousel, 5, marginal jut, 6, T type guide way, 7, linear type guide way, 8, cylindrical support portion, 9, rectangle rotating part, 10, V type recess, 11, mounting groove.
Detailed Description
As shown in fig. 1, 2 and 3, a jig device for intelligently detecting the center thickness of a lens selects a wear-resistant material to prolong the service life and ensure the accuracy for a long time. The jig device comprises a cylindrical upper rotary table 2, a lower rotary table 4, a sliding block 3 and a V-shaped centering block 1 for lens centering, wherein the V-shaped centering block 1 is provided with a V-shaped groove 10 matched with a lens.
The inner surface of the cylindrical upper rotary table is provided with a circle of mounting grooves 11, and the outer surface of the lower rotary table 4 is provided with edge protrusions 5 which are in transition fit with the inner surface mounting grooves 11 of the cylindrical upper rotary table 2, so that the cylindrical upper rotary table 2 and the lower rotary table 4 can be reliably fixed and can rotate mutually.
The cylindrical upper turntable 2 is of a hollow shell type structure. Two T type guide ways 6 with V type centering block 1 matched with are seted up to cylindrical upper surface of going up carousel 2, and two T type guide ways 6 are central symmetry structure, and T type guide way 6 is arranged in to the lower surface of V type centering block 1. The T-shaped guide groove 6 can guarantee that the clamping v-shaped centering blocks 1 move linearly in the T-shaped guide groove 6, and meanwhile, the two v-shaped centering blocks 1 can be guaranteed to move for the same distance in opposite directions simultaneously, so that the centering accuracy of the clamped optical lens is guaranteed.
Two linear type guide grooves 7 which are parallel to each other are formed in the upper surface of the lower rotating disc 4, and the motion of the sliding block 3 is guided.
The cylindrical support part 8 and the centering v-shaped centering block 1 are detachably connected with high relative position precision; one advantage of this kind of connected mode is, when the great wearing and tearing of influence appear in v type centering piece 1 or cylindrical support portion 8, can be comparatively convenient change, save the cost.
When the lower rotary table 4 rotates, the linear motion of the sliding block 3 is converted into the linear motion of the v-shaped centering block 1 through the guiding action of the T-shaped guide groove 6, and the v-shaped centering block 1 finally moves towards the center or outwards at the same speed. The v-shaped centering block 1 has a centering function, and when the contact type measurement is carried out, a contact point is accurately positioned at the central part of the lens, and certain lens edge constraint is provided, so that the lens is prevented from shaking in the measurement process, and the measurement precision is ensured.
Aiming at the clamp device for intelligently detecting the center thickness of the lens, the corresponding detection method comprises the following operation steps:
1) before the measurement is started, the device clamping accuracy is first detected.
The specific process comprises the following steps: putting the lens with the standard thickness into a jig device, rotating a lower turntable 4 to enable a V-shaped centering block 1 to approach the lens until the lens is clamped, then moving an upper measuring probe and a lower measuring probe, stopping moving when the upper measuring probe and the lower measuring probe are respectively contacted with the lens, measuring the center thickness of the lens of the standard sample piece, comparing the obtained value with a standard value, and if the error is within an allowable range, indicating that the clamping precision of the clamp meets the requirement, and continuing the test;
2) putting a lens to be measured into a jig device, driving the cylindrical upper rotary table 2 and the cylindrical lower rotary table 4 to rotate relatively by a motor, driving the sliding block 3 to do linear motion in the linear guide groove 7 at the moment, and driving the v-shaped centering block 1 to approach to the center along the linear guide groove 7 through the matching of the cylindrical supporting part 8 to finish centering and tightening of the lens;
3) the upper and lower measuring probes move until the upper and lower surfaces of the lens are contacted with each other, the central thickness of the lens is measured and fed back to the sensor, and data are uploaded;
4) after the measurement is finished, the upper and lower measuring probes and the v-shaped centering block 1 are reset, the lens is taken down, and the next measurement is waited.
Claims (9)
1. The utility model provides a tool device for intellectual detection system lens center thickness, its characterized in that, including cylindrical carousel (2), lower carousel (4), slider (3) and be used for V type centering piece (1) of lens centering, cylindrical upper surface of going up carousel (2) has seted up two T type guide way (6) with V type centering piece (1) matched with, two T type guide way (6) are central symmetrical structure, T type guide way (6) are arranged in to the lower surface of V type centering piece (1), two linear type guide ways (7) that are parallel to each other are seted up to the upper surface of lower carousel (4), the bottom of slider (3) is rotated and is set up in linear type guide way (7), the top fixed connection of slider (3) is in V type centering piece (1).
2. The jig device for intelligently detecting the center thickness of the lens as claimed in claim 1, wherein the cylindrical upper turntable (2) is a hollow shell structure.
3. The jig device for intelligently detecting the center thickness of the lens as claimed in claim 1, wherein the V-shaped centering block (1) is provided with a V-shaped groove (10) matched with the lens.
4. The jig device for intelligently detecting the center thickness of a lens as claimed in claim 1, wherein the inner surface of the cylindrical upper turntable is provided with a circle of mounting grooves (11).
5. The jig device for intelligently detecting the center thickness of the lens as claimed in claim 4, wherein the outer surface of the lower turntable (4) is provided with an edge protrusion (5) which is in transition fit with the inner surface mounting groove (11) of the cylindrical upper turntable (2).
6. The jig device for intelligently detecting the central thickness of the lens according to claim 1, wherein the slider (3) comprises a vertical cylindrical support portion (8) and a horizontal rectangular rotating portion (9), the upper end of the cylindrical support portion (8) is transitionally connected in the V-shaped centering block (1), the lower end of the cylindrical support portion (8) is fixed at the central position of the rectangular rotating portion (9), and the bottom of the rectangular rotating portion (9) is rotatably arranged in the linear guide groove (7).
7. The jig device for intelligently detecting the center thickness of the lens according to claim 6, wherein a cylindrical hole for transitionally connecting the V-shaped centering block (1) and the cylindrical support portion (8) is formed at the bottom of the V-shaped centering block (1).
8. A detection method for intelligently detecting the center thickness of a lens is characterized by comprising the following specific operation steps:
1) detecting the clamping precision of the jig device, if the error is within an allowable range, indicating that the clamping precision of the jig device meets the requirement, and continuing to perform the test;
2) putting a lens to be measured into a jig device, driving a cylindrical upper turntable (2) and a lower turntable (4) to rotate relatively by a motor, making a sliding block (3) do linear motion in a linear guide groove (7), and driving a v-shaped centering block (1) to approach to the center along the linear guide groove (7) through the matching of a cylindrical supporting part (8) to finish centering and tightening of the lens;
3) the upper and lower measuring probes move until the upper and lower surfaces of the lens are contacted with each other, the central thickness of the lens is measured and fed back to the sensor, and data are uploaded;
4) after the measurement is finished, the upper and lower measuring probes and the v-shaped centering block (1) are reset, the lens is taken down, and the next measurement is waited.
9. The method for intelligently detecting the center thickness of the lens as claimed in claim 8, wherein the specific detection steps of step 1) are as follows: putting the lens with the standard thickness into a jig device, rotating a lower turntable (4) to enable a V-shaped centering block (1) to approach the lens until the lens is clamped tightly, then moving an upper measuring probe and a lower measuring probe, stopping moving when the upper measuring probe and the lower measuring probe are respectively contacted with the lens, measuring the central thickness of the lens of the standard sample piece, comparing the obtained value with a standard value, and if the error is within an allowable range, indicating that the clamping precision of the clamp meets the requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265515.6A CN112254690A (en) | 2020-11-13 | 2020-11-13 | Jig device and detection method for intelligently detecting center thickness of lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265515.6A CN112254690A (en) | 2020-11-13 | 2020-11-13 | Jig device and detection method for intelligently detecting center thickness of lens |
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| CN112254690A true CN112254690A (en) | 2021-01-22 |
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| CN202011265515.6A Pending CN112254690A (en) | 2020-11-13 | 2020-11-13 | Jig device and detection method for intelligently detecting center thickness of lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046730A (en) * | 2021-10-29 | 2022-02-15 | 南京茂莱光学科技股份有限公司 | Optical lens auxiliary jig and method for measuring surface type precision and R value deviation thereof |
-
2020
- 2020-11-13 CN CN202011265515.6A patent/CN112254690A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046730A (en) * | 2021-10-29 | 2022-02-15 | 南京茂莱光学科技股份有限公司 | Optical lens auxiliary jig and method for measuring surface type precision and R value deviation thereof |
| CN114046730B (en) * | 2021-10-29 | 2023-01-24 | 南京茂莱光学科技股份有限公司 | Optical lens auxiliary jig and measuring method of surface type precision and R value deviation thereof |
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