CN210109443U - Optical head leveling device - Google Patents
Optical head leveling device Download PDFInfo
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- CN210109443U CN210109443U CN201920779884.3U CN201920779884U CN210109443U CN 210109443 U CN210109443 U CN 210109443U CN 201920779884 U CN201920779884 U CN 201920779884U CN 210109443 U CN210109443 U CN 210109443U
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- optical head
- nut
- head plate
- leveling device
- accommodating cavity
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Abstract
An optical head leveling device relates to the technical field of optical detection and comprises a base station and an optical head plate positioned above the base station, wherein the optical head plate is provided with a mounting hole for mounting an optical head; the optical head plate is connected with the base platform through three adjusting points which are distributed in an L-shaped right angle; each adjusting point is provided with a screw, a nut and a compression spring, and the nut is embedded into the base; a cylindrical accommodating cavity is formed between the optical head plate and the base platform, one part of the accommodating cavity is positioned in the optical head plate, and the other part of the accommodating cavity is positioned in the base platform; the compression spring is arranged in the accommodating cavity and is superposed with the axis of the nut; the screw penetrates through the optical head plate and the inner ring of the compression spring from top to bottom in sequence and is connected with the nut in a matching mode. The utility model not only solves the problem that return stroke difference is easy to generate in the adjusting process; the influence on the remaining adjustment points when adjusting one of the adjustment points is also reduced.
Description
Technical Field
The utility model relates to an optical detection technical field specifically is an optical head levelling device.
Background
In an Area-array AOI (Area-Scan Automated Optical Inspection) device, each AOI generally has a plurality of Area-array Optical heads, and each time an image is acquired on a glass panel by an Optical head, the Optical head needs to be leveled with high precision. In the actual adjustment process, more than three adjusting points are often provided, and when the included angle between one of the adjusting points and the horizontal plane is adjusted, the included angles between the other adjusting points and the horizontal plane are difficult to ensure that no slight change occurs, and although the displacement of the adjusting point causing the change is within a few micrometers, the detection of the optical head still has a great adverse effect. Meanwhile, when the optical head is adjusted by using a screw or a gasket, a small return distance difference is often generated, the difficulty of leveling the optical head is increased, and the optical head is particularly suitable for multi-head detection equipment.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an optical head leveling device, which not only solves the problem that the return distance difference is easy to generate in the adjusting process; the influence on the remaining adjustment points when adjusting one of the adjustment points is also reduced.
In order to achieve the above purpose, the utility model adopts an optical head leveling device, which is characterized in that the optical head leveling device comprises a base station and an optical head plate positioned above the base station, wherein the optical head plate is provided with a mounting hole for mounting an optical head; the optical head plate is connected with the base platform through three adjusting points which are distributed in an L-shaped right angle; each adjusting point is provided with a screw, a nut and a compression spring, and the nut is embedded into the base; a cylindrical accommodating cavity is formed between the optical head plate and the base platform, one part of the accommodating cavity is positioned in the optical head plate, and the other part of the accommodating cavity is positioned in the base platform; the compression spring is arranged in the accommodating cavity and is superposed with the axis of the nut; the screw penetrates through the optical head plate and the inner ring of the compression spring from top to bottom in sequence and is connected with the nut in a matching mode.
On the basis of the technical scheme, the base station is provided with an arc-shaped notch, and the mounting hole of the optical head plate is located above the arc-shaped notch.
On the basis of the technical scheme, the optical head plate is provided with a through hole, the through hole is positioned above the accommodating cavity, the diameter of the through hole is smaller than that of the accommodating cavity, and the screw penetrates into the inner ring of the compression spring through the through hole.
On the basis of the technical scheme, the upper surface of the nut is the lower end surface of the accommodating cavity; the lower surface of the nut is flush with the bottom surface of the base station.
On the basis of the technical scheme, the top end of the compression spring is abutted against a step surface formed by the through hole and the accommodating cavity, and the bottom end of the compression spring is abutted against the upper surface of the nut.
On the basis of the technical scheme, a spherical gasket is arranged between the contact surface of the screw and the optical head plate.
On the basis of the technical scheme, the leveling device further comprises a back plate, and the base station is vertically fixed on the back plate.
On the basis of the technical scheme, the reinforcing rib is arranged below the base station, the reinforcing rib is in the shape of a right triangle, one right-angle side of the reinforcing rib is fixed with the back plate, and the other right-angle side of the reinforcing rib is fixed with the base station.
On the basis of the technical scheme, the optical head plate comprises two right-angle sides and an arc-shaped side, and the three adjusting points are respectively positioned at the end parts of the two right-angle sides; and the optical head is positioned in the arc-shaped edge after being installed.
On the basis of the technical scheme, the screw is an inner hexagonal round head screw, and the nut is an opposite-sex step nut.
The beneficial effects of the utility model reside in that:
1. the utility model adopts the three-point leveling principle, 3 adjusting points are distributed at the L-shaped right-angle position and are respectively named as a, b and c; wherein point c is located at the right angle of the L shape; when the optical head plate is leveled, firstly, the point c is fixedly locked, and then the point a and the point b are adjusted according to a correction value fed back by the imaging system, so that the optical head plate is leveled, and mechanical assembly errors are eliminated; when the point a is adjusted, the point b and the point c are kept still, the optical head plate takes bc as a rotating shaft which is a connecting line of the sphere centers of the spherical gaskets at the point b and the point c and rotates around the sphere center, and because the three points are distributed in an L-shaped right angle, the influence of the point a on the point b is very small, and the point c is in a locking state at first, so that the displacement transmitted to the point b and the point c is very little, and the actual measurement proves that the displacement of the point b and the point c is less than 1 um; similarly, the same is true for adjusting the point b; the leveling device greatly reduces the influence on one adjusting point when the other adjusting point is adjusted.
2. The utility model discloses a compression spring is all installed to three adjustment point, and it both regards as the support, as continuous guiding mechanism again for at the rotatory screw in-process, can not appear undulant phenomenon because of the thread clearance between screw and the nut and the in-process of adjusting about the screw, it is poor not have the return stroke, makes the leveling high-efficient swift more.
3. The utility model mainly depends on the three-point leveling principle, and the components mainly comprise a base station, an optical head plate, a compression spring and a spherical gasket, so that the structure is simple; the base table and the optical head plate have no any redundant materials, so that the weight is light; the influence on another adjustment point when adjusting an adjustment point is effectively reduced, the function is practical, and the overall cost is lower.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a front view of the embodiment of the present invention.
Fig. 3 is a sectional view taken along the plane a-a of fig. 2.
Fig. 4 is a top view of fig. 2.
Reference numerals: 1-optical head, 2-base station, 3-optical head plate, 4-reinforcing rib, 5-compression spring, 6-spherical gasket, 7-screw, 8-back plate and 9-nut.
Detailed Description
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, an optical head leveling device includes an optical head plate 3 and a base 2, wherein the optical head plate 3 is located above the base 2. The optical head plate 3 is provided with a mounting hole for mounting the optical head 1. Preferably, the mounting hole is a circular hole having a diameter larger than the front end diameter of the optical head 1.
In this embodiment, base station 2 has the arc breach, and the mounting hole of optics head board 3 is located the arc breach top, and this structure has reduced unnecessary material under the prerequisite of guaranteeing base station 2 support intensity, has lightened levelling device's quality.
As shown in fig. 3 and 4, the optical head plate 3 and the base 2 are connected by three adjustment points, which are arranged at right angles in an L-shape.
In the present embodiment, the optical head plate 3 includes two right-angle sides and an arc-shaped side, and the three adjustment points are respectively located at the ends of the two right-angle sides; and the optical head 1 is positioned in the arc-shaped edge after being installed. In other embodiments, the optics head plate 3 may be rectangular, and may also be a right-angled fan.
Preferably, headboard 3 meets the three requirements that ① be of sufficient area to receive the optical head 1, ② be rigid enough not to deform after the optical head 1 is installed, ③ cut away as much unnecessary material as possible.
Each adjustment point is provided with a screw 7, a nut 9 and a compression spring 5. The nut 9 is embedded in the base 2, and preferably, the lower surface of the nut 9 is flush with the bottom surface of the base 2.
A cylindrical accommodating cavity is formed between the optical head plate 3 and the base 2, one part of the accommodating cavity is positioned in the optical head plate 3, and the other part of the accommodating cavity is positioned in the base 2; the compression spring 5 is arranged in the accommodating cavity, and the compression spring 5 is overlapped with the axle center of the nut 9.
Specifically, the cavity of the optics head plate 3 faces downward and the cavity of the base 2 faces upward, which mate to form a cylindrical receiving cavity. Preferably, the cavity axial length of the optical head plate 3 is less than half of its thickness dimension, and the cavity axial length of the abutment 2 is also less than half of its thickness dimension. Preferably, the upper surface of the nut 9 is the lower end surface of the receiving cavity.
As shown in fig. 3, a screw 7 penetrates the optical head plate 3 and the inner ring of the compression spring 5 from top to bottom in sequence, and is connected with a nut 9 in a matching way. Preferably, the compression spring 5 is a heavy compression spring.
Preferably, a spherical spacer 6 is arranged between the contact surfaces of the screw 7 and the optical head plate 3, and the spherical spacer 6 can play the roles of backstop and centering.
In this embodiment, the optical head plate 3 is provided with a through hole, the through hole is located above the accommodating cavity, the diameter of the through hole is smaller than that of the accommodating cavity, and the screw 7 penetrates through the inner ring of the compression spring 5 through the through hole. The through holes, the screws, the nuts, the accommodating cavities and the axes of the compression springs 5 are all overlapped.
Preferably, the top end of the compression spring 5 abuts against a step surface formed by the through hole and the accommodating cavity, and the bottom end of the compression spring 5 abuts against the upper surface of the nut 9.
As shown in fig. 2 and 3, the leveling device further includes a back plate 8, and the base 2 is vertically fixed to the back plate 8. Reinforcing ribs 4 are arranged below the base platform 2, the reinforcing ribs 4 are in the shape of right-angled triangles, one right-angled side of each reinforcing rib is fixed with the back plate 8, the other right-angled side of each reinforcing rib is fixed with the base platform 2, and the structure can further enhance the rigidity of the base platform 2.
Preferably, the screw 7 is a hexagon socket head screw, and the nut 9 is a different step nut.
The embodiment of the utility model provides a theory of operation does:
the utility model adopts the three-point leveling principle, 3 adjusting points are distributed at the L-shaped right-angle position and are respectively named as a, b and c (as shown in figure 4); wherein point c is located at the right angle of the L-shape.
When leveling of the optical head plate 3 is started, the point c is fixed and locked, and then the point a and the point b are adjusted according to a correction value fed back by the imaging system, so that the optical head plate is leveled, and mechanical assembly errors are eliminated. When the point a is adjusted, the point b and the point c are kept still, the optical head plate takes bc as a rotating shaft which is a connecting line of the sphere centers of the spherical gaskets at the point b and the point c and rotates around the sphere center, and because the three points are distributed in an L-shaped right angle, the influence of the point a on the point b is very small, and the point c is in a locking state at first, so that the displacement transmitted to the point b and the point c is very little, and the actual measurement proves that the displacement of the point b and the point c is less than 1 um; similarly, the same is true for adjusting the point b; the leveling device greatly reduces the influence on one adjusting point when the other adjusting point is adjusted.
In the process, each adjusting point is composed of a screw 7, a nut 9 and a compression spring 5, when the relative position of the adjusting screw 7 and the nut 9 is changed, the compression spring 5 sleeved on the screw 7 is used as a support and a continuous adjusting mechanism, so that in the process of adjusting the screw 7, the phenomenon of fluctuation in the process of adjusting the screw 7 up and down due to the thread clearance between the screw 7 and the nut 9 is avoided, return stroke difference is avoided, and leveling is more efficient and faster. Meanwhile, a spherical gasket 6 is arranged between the screw 7 and the optical head plate 3 of the leveling device, and the spherical gasket 6 can play a centering role, so that the phenomenon that the axis of the screw 7 deviates from the axis of a screw hole of the optical head plate 3 and the optical head plate 3 moves horizontally relatively in the adjusting process is avoided.
The leveling device mainly depends on a three-point leveling principle, and the components mainly comprise a base station, an optical head plate, a compression spring and a spherical gasket, so that the structure is simple; the base table and the optical head plate have no any redundant materials, so that the weight is light; the influence on another adjustment point when adjusting an adjustment point is effectively reduced, the function is practical, and the overall cost is lower.
The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.
Claims (10)
1. The optical head leveling device is characterized by comprising a base platform (2) and an optical head plate (3) positioned above the base platform, wherein the optical head plate (3) is provided with a mounting hole for mounting an optical head (1);
the optical head plate (3) is connected with the base platform (2) through three adjusting points which are distributed in an L-shaped right angle;
each adjusting point is provided with a screw (7), a nut (9) and a compression spring (5), and the nut (9) is embedded into the base (2); a cylindrical accommodating cavity is formed between the optical head plate (3) and the base platform (2), one part of the accommodating cavity is positioned in the optical head plate (3), and the other part of the accommodating cavity is positioned in the base platform (2); the compression spring (5) is arranged in the accommodating cavity, and the compression spring (5) is superposed with the axis of the nut (9); the screw (7) penetrates through the optical head plate (3) and the inner ring of the compression spring (5) from top to bottom in sequence and is connected with the nut (9) in a matching mode.
2. The optical head leveling device according to claim 1, wherein: the base station (2) is provided with an arc-shaped gap, and the mounting hole of the optical head plate (3) is located above the arc-shaped gap.
3. The optical head leveling device according to claim 1, wherein: the optical head plate (3) is provided with a through hole, the through hole is positioned above the accommodating cavity, the diameter of the through hole is smaller than that of the accommodating cavity, and the screw (7) penetrates into the inner ring of the compression spring (5) through the through hole.
4. An optical head leveling device as defined in claim 3 wherein: the upper surface of the nut (9) is the lower end surface of the accommodating cavity; the lower surface of the nut (9) is flush with the bottom surface of the base station (2).
5. The optical head leveling device according to claim 4, wherein: the top end of the compression spring (5) abuts against a step surface formed by the through hole and the accommodating cavity, and the bottom end of the compression spring (5) abuts against the upper surface of the nut (9).
6. The optical head leveling device according to claim 1, wherein: and a spherical gasket (6) is arranged between the contact surfaces of the screw (7) and the optical head plate (3).
7. The optical head leveling device according to claim 1, wherein: the leveling device further comprises a back plate (8), and the base platform (2) is vertically fixed on the back plate (8).
8. An optical head leveling device in accordance with claim 7 wherein: reinforcing ribs (4) are installed below the base platform (2), the reinforcing ribs (4) are in the shape of right-angled triangles, one right-angled side of each reinforcing rib is fixed with the back plate (8), and the other right-angled side of each reinforcing rib is fixed with the base platform (2).
9. The optical head leveling device according to claim 1, wherein: the optical head plate (3) comprises two right-angle sides and an arc-shaped side, the three adjusting points are respectively positioned at the end parts of the two right-angle sides, and the optical head (1) is positioned in the arc-shaped side after being installed.
10. The optical head leveling device according to any one of claims 1 to 9, wherein: the screw (7) adopts an inner hexagonal round head screw, and the nut (9) adopts a nut with different steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920779884.3U CN210109443U (en) | 2019-05-27 | 2019-05-27 | Optical head leveling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920779884.3U CN210109443U (en) | 2019-05-27 | 2019-05-27 | Optical head leveling device |
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| Publication Number | Publication Date |
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| CN210109443U true CN210109443U (en) | 2020-02-21 |
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| CN201920779884.3U Active CN210109443U (en) | 2019-05-27 | 2019-05-27 | Optical head leveling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128716A (en) * | 2020-09-30 | 2020-12-25 | 江苏杨园生态环保有限公司 | Street lamp base mounting structure and construction method |
| CN112317732A (en) * | 2020-09-08 | 2021-02-05 | 广东韶钢松山股份有限公司 | Tilting prevention device and method for molten steel tank |
-
2019
- 2019-05-27 CN CN201920779884.3U patent/CN210109443U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112317732A (en) * | 2020-09-08 | 2021-02-05 | 广东韶钢松山股份有限公司 | Tilting prevention device and method for molten steel tank |
| CN112128716A (en) * | 2020-09-30 | 2020-12-25 | 江苏杨园生态环保有限公司 | Street lamp base mounting structure and construction method |
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