CN114485393B - Picture card tool and calibration method - Google Patents
Picture card tool and calibration method Download PDFInfo
- Publication number
- CN114485393B CN114485393B CN202111667484.1A CN202111667484A CN114485393B CN 114485393 B CN114485393 B CN 114485393B CN 202111667484 A CN202111667484 A CN 202111667484A CN 114485393 B CN114485393 B CN 114485393B
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- positioning hole
- positioning
- mounting groove
- card body
- graphic card
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 description 10
- 238000010147 laser engraving Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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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
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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
- G01B21/04—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 by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Machine Tool Sensing Apparatuses (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The embodiment of the disclosure discloses a graphic card tool and a calibration method. This picture card frock includes: the tool comprises a tool base, wherein a mounting groove is formed in the tool base; the image card body is embedded in the mounting groove, and a gap is formed between the side edge of the image card body and the side wall of the mounting groove; the positioning structure is arranged on the tool base and is used for positioning the graphic card body; and the adjusting device is arranged around the mounting groove and is used for adjusting the position of the graphic card body relative to the positioning structure. Through combining the picture card with the picture card frock, can effectively improve the precision, reduce the error that the locating hole processing and use caused.
Description
Technical Field
The invention relates to the field of optical test calibration, in particular to a graphic card tool and a calibration method.
Background
Currently, based on the field of optical calibration, the graphic card calibration of optical testing equipment mainly adopts a direct processing mode of a glass graphic card, wherein the glass graphic card comprises two parts, namely positioning reference hole processing and cross graphic card laser engraving. In the positioning reference hole machining process, the positioning reference hole is usually machined directly according to a theoretical value by adopting a machine, and when a plurality of holes are machined, the hole pitch of the positioning reference hole is easy to generate errors, and particularly in the multi-hole machining process, the center point of the positioning reference hole is difficult to be positioned on the same horizontal line, so that the errors in the subsequent use process are larger. The laser engraving process of the graphic card has higher precision, but the graphic card is easy to cause larger use errors in the use process after being calibrated, such as offset errors between the center of the cross wire of the graphic card and the center of a product due to errors of the positioning reference holes.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a novel technical scheme of a graphic card tool.
According to a first aspect of the invention, a graphic card tool is provided. This picture card frock includes:
the tool comprises a tool base, wherein a mounting groove is formed in the tool base;
the image card body is embedded in the mounting groove, and a gap is formed between the side edge of the image card body and the side wall of the mounting groove;
the positioning structure is arranged on the tool base and is used for positioning the graphic card body;
and the adjusting device is arranged around the mounting groove and is used for adjusting the position of the graphic card body relative to the positioning structure.
Optionally, the positioning structure includes a first positioning hole and at least one second positioning hole, the first positioning hole and the second positioning hole are both disposed on the tool base and are both located on the same side of the mounting groove, and the first positioning hole and the at least one second positioning hole are arranged in a straight line.
Optionally, the fixture further comprises a moving assembly, wherein the moving assembly comprises a moving block and a moving device, the moving block is embedded in the fixture base, the moving block is provided with the second positioning hole, and the moving device is configured to move the moving block.
Optionally, the moving device comprises a push rod and an elastic element;
the moving block comprises a first side and a third side, and the first side and the third side are oppositely arranged; the push rod is arranged on the first side of the moving block, and the elastic element is arranged on the third side of the moving block.
Optionally, the adjusting device comprises a plurality of push rods, and a plurality of push rods are arranged around the mounting groove.
Optionally, at least two push rods are disposed on the same side of the card body.
Optionally, the mounting groove is rectangular, the cross section of the card body is rectangular, and at least two push rods are arranged on each side of the mounting groove.
Optionally, the push rod is a spring jackscrew, a threaded hole is formed in the tool base, and the spring jackscrew is in threaded fit with the threaded hole.
According to another aspect of the invention, a method for calibrating a graphic card tool is provided. The calibration method comprises the following steps:
installing the graphic card body into an installation groove of the tool base;
and adjusting the position of the positioning structure through an adjusting device so that the distance between the graphic card body and the positioning structure reaches a first preset value.
Optionally, the positioning structure includes a first positioning hole and a second positioning hole, where the first positioning hole and the second positioning hole are both disposed on the tool base and are both located on the same side of the mounting groove, and the first positioning hole and at least one second positioning hole are arranged in a straight line;
before the step of adjusting the position of the positioning structure through the adjusting device to enable the distance between the graphic card body and the positioning structure to reach a first preset value, the method further comprises the following steps:
and adjusting the distance between the second positioning hole and the first positioning hole to reach a second preset value.
In the embodiment of the disclosure, the precision can be effectively improved by combining the graphic card with the graphic card tool, and errors caused in the processing and using processes of the positioning hole are reduced.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic diagram of a card tooling according to an embodiment of the present disclosure.
Fig. 1a is a left side schematic view of a main schematic view of a card tool according to an embodiment of the disclosure.
Fig. 1b is a bottom view of a schematic diagram of a card tooling according to an embodiment of the disclosure.
Fig. 2 is a rear schematic view of the card tooling according to an embodiment of the present disclosure.
Fig. 2a is a left side schematic view of a card tooling according to an embodiment of the disclosure.
Fig. 2b is a top view of a schematic diagram of a card tooling according to an embodiment of the disclosure.
Reference numerals illustrate:
1. a first positioning hole; 2. a second positioning hole; 3. a tooling base; 4. a push rod; 5. an elastic element; 6. a graphic card body; 7. and a mounting groove.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
According to one embodiment of the present disclosure, a graphic card tooling is provided. As shown in fig. 1, the card tool includes:
the fixture base 3 is provided with a mounting groove 7 on the fixture base 3.
The picture card body 6, the picture card body 6 inlays and establishes in mounting groove 7. A gap is arranged between the side edge of the picture card body 6 and the side wall of the mounting groove 7.
The positioning structure is arranged on the tool base 3. The positioning structure is used for positioning with the graphic card body 6.
And an adjusting device arranged around the mounting groove 7. For adjusting the position of the card body 6 relative to the positioning structure.
For example, the tool base 3 is provided with a mounting groove 7. The mounting groove 7 is used for placing the graphic card body 6. The shape, size and depth of the mounting groove 7 are not limited herein as long as the placement of the card body 6 can be satisfied.
And processing the cross hair on the graphic card body 6 by adopting a laser engraving machine for subsequent calibration and positioning. It should be noted that: the laser engraving process precision of the laser engraving machine adopted by the graphic card body 6 is higher, and errors brought by the laser engraving machine working in the laser engraving process can be ignored.
The card body 6 may be made of glass, plastic, or other materials, and the material of the card is determined according to the set requirements, which is not limited herein.
The picture card body 6 is embedded in the mounting groove 7. A gap is arranged between the side edge of the picture card body 6 and the side wall of the mounting groove 7. For example, the card body 6 is held to a certain tolerance in terms of the edge of the embedded dimension of the mounting groove 7. The tolerance value is set according to the size of the card body 6, and is not limited herein as long as a gap between the side edge of the card body 6 and the side wall of the mounting groove 7 can be satisfied.
A gap is arranged between the side edge of the picture card body 6 and the side wall of the mounting groove 7. This enables the card body 6 to be moved into position as required within the mounting slot 7, thereby moving the card body 6 into position.
The positioning structure is arranged on the tool base 3. For example, a plurality of positioning holes are formed in the tool base 3. One of the positioning holes is set as a fixing hole. The rest positioning holes are made into an adjustable mode by utilizing the moving assembly. By the mode, the measuring precision among the plurality of positioning holes on the tool base 3 can be improved, so that the distance among the positioning holes can be adjusted to an accurate distance according to the preset distance of a product. Meanwhile, the centers of the positioning holes can be adjusted on the same horizontal line, so that the measurement accuracy among the positioning holes is improved, the positions of the positioning holes are prevented from being directly fixed, the hole distance among the positioning holes cannot be adjusted, and errors caused by the fact that the centers of the positioning holes are on the same horizontal line cannot be adjusted.
In addition, the rest positioning holes are made into an adjustable mode, so that the distance between the positioning holes can be accurately adjusted within the micron-scale range, and the measurement accuracy of the tool is further improved. Of course, the adjustment method may be other suitable methods, and is not limited to the embodiments described herein, as long as the positioning hole is set in an adjustable manner.
The adjusting means are arranged around the mounting groove 7. For example, an adjusting hole is formed in the side wall of the tool base 3. The adjusting holes extend from the side wall of the tooling base 3 to the side wall in the mounting groove 7. A moving component is arranged in the adjusting hole. The card body 6 in the mounting groove 7 is adjusted and positioned by the moving component.
The adjusting device is used for adjusting the position of the graphic card body 6 relative to the positioning structure. For example, the positioning structure has 2 positioning holes. One of the positioning holes is set as a fixed hole, and the other is set as an adjustable positioning hole. According to the preset distance of the product, the distance between the fixed hole and the adjustable positioning hole is accurately adjusted, so that a datum line is formed between the fixed hole and the adjustable positioning hole. The position of the card body 6 in the mounting groove 7 is adjusted by an adjusting device. So that one side of the cross hair on the glass picture card is parallel to the datum line formed by the positioning structure. And further, the glass card can be fixed at the exact position of the mounting groove 7.
In one example, the positioning structure comprises a first positioning hole 1 and at least one second positioning hole 2. The first positioning hole 1 and the second positioning hole 2 are both arranged on the tool base 3 and are both positioned on the same side of the mounting groove 7. The first positioning hole 1 and at least one second positioning hole 2 are arranged in a straight line.
For example, the tool base 3 is provided with a mounting groove 7. The first positioning hole 1 and at least one second positioning hole 2 are provided on the same side of the mounting groove 7. The first positioning hole 1 is a fixed hole. The second positioning hole 2 adopts a jackscrew mode and is arranged as an adjustable positioning hole.
In the condition that the second positioning hole 2 is one, the distance between the center of the first positioning hole 1 and the second positioning hole 2 is accurately adjusted according to the preset distance of the product.
Under the condition that the second positioning holes 2 are multiple, the distances between the centers of the first positioning hole 1 and the centers of the multiple second positioning holes 2 are accurately adjusted according to the preset distance of the product, and the centers of the first positioning hole 1 and the centers of the multiple second positioning holes 2 are positioned on the same horizontal line.
In another example, a mounting groove 7 is provided on the tooling base 3. The first positioning hole 1 and at least one second positioning hole 2 are provided on the same side of the mounting groove 7. The first positioning hole 1 is a fixed hole. The second positioning hole 2 is also a fixed hole.
Under the condition that the second positioning hole 2 is one, the first positioning hole 1 and the second positioning hole 2 are directly processed on the tool base 3 according to the preset distance of the product, so that the distance between the centers of the first positioning hole 1 and the second positioning hole 2 reaches the preset distance of the product.
Under the condition that the second positioning holes 2 are multiple, according to the preset distance of the product, the first positioning holes 1 and the second positioning holes 2 are directly processed on the tool base 3, so that the distance between the centers of the first positioning holes 1 and the centers of the second positioning holes 2 reaches the preset distance of the product, and the centers of the first positioning holes 1 and the centers of the second positioning holes 2 are positioned on the same horizontal line.
Of course, the second positioning hole 2 may be made adjustable or fixed, as long as the distance between the center of the first positioning hole 1 and the center of the second positioning hole 2 can reach the predetermined distance of the product, and the present invention is not limited thereto.
The second positioning holes 2 are made to be adjustable, so that the distance between the second positioning holes 2 and the center of the first positioning holes 1 can be accurately adjusted according to the preset distance of the product, and under the condition that the second positioning holes 2 are multiple, the centers of the positioning holes can be flexibly and accurately adjusted to be positioned on the same horizontal line, and the measurement precision among the positioning holes is improved.
In addition, the second locating holes 2 are arranged in a plurality of mode, the measuring range between the first locating holes 1 and the second locating holes 2 can be enlarged, and therefore universality of the tool base 3 is improved.
The number of the second positioning holes 2 is usually 2 or 4, and can be set by those skilled in the art according to actual needs, which is not limited herein.
In one example, a mobile component is also included. The moving assembly includes a moving block and a moving device. The movable block is embedded in the tool base 3. The moving block is provided with a second positioning hole 2. The moving means is configured for moving the moving block.
For example, the tooling base 3 further comprises a moving component. The moving assembly is used for moving the position of the second positioning hole 2. The moving assembly includes a moving block and a moving device. The moving block is provided with a second positioning hole 2. The movable block is embedded in the tool base 3. The moving means is capable of moving the moving block to a suitable position. The second positioning hole 2 is formed in the moving block, the moving device moves the moving block, the distance from the center of the second positioning hole 2 to the center of the first positioning hole 1 can be accurately adjusted, and the measurement accuracy between the positioning holes is improved.
In one example, the moving means comprises a push rod 4 and a resilient element 5.
The moving block includes a first side and a third side. The first side and the third side are disposed opposite. The push rod 4 is arranged on a first side of the moving block. The elastic element 5 is arranged on a third side of the moving block.
For example, a push rod 4 is provided at the first side of the moving block. The third side of the moving block is provided with an elastic element 5. The first side and the third side are disposed opposite. By moving the push rod 4 on the first side of the moving block, the elastic element 5 on the third side of the moving block is compressed, so that the moving block moves under the action of the push rod 4. Due to the fact that the second positioning hole 2 is formed in the moving block, the second positioning hole 2 can be moved to a proper position through the mutual matching of the push rod 4 and the spring element.
In another example, the moving block further includes a second side and a fourth side. A push rod 4 is arranged on the second side of the moving block. On the fourth side of the moving block an elastic element 5 is provided. The second side and the fourth side are disposed opposite.
The elastic element 5 may be a spring, an elastic glue, or any other suitable material or device, as long as the movable block can be compressed and moved towards the inside of the tool base 3 under the action of the push rod 4.
Through inlaying in the inside of frock base 3 establishes the movable block to set up second locating hole 2 on the movable block, make the distance at second locating hole 2 center and fixed orifices center on the frock base 3 can be accurate nimble the regulation, improved the measurement accuracy of frock.
In one example, the adjustment means comprise a plurality of push rods 4. A plurality of push rods 4 are arranged around the mounting groove 7.
For example, a plurality of adjustment holes are provided on the side wall of the tooling base 3. The adjusting holes extend from the side wall of the tooling base 3 to the side wall in the mounting groove 7. A plurality of push rods 4 are provided in the plurality of adjustment holes. A plurality of push rods 4 are arranged around the mounting groove 7. The mounting groove 7 is embedded with the graphic card body 6. A plurality of push rods 4 are arranged around the mounting groove 7. The card body 6 in the mounting groove 7 can be adjusted to a proper position by the plurality of push rods 4.
In one example, at least two push rods 4 are provided on the same side of the card body 6.
For example, at least two push rods 4 are arranged on the same side of the card body 6, so that the push rods 4 can accurately adjust the card to a proper position and achieve the fixing effect, and errors caused by the movement of the later-stage processing card mounting position are avoided.
In one example, the mounting groove 7 is rectangular. The card body 6 has a rectangular cross section. At least two push rods 4 are provided on each side of the mounting groove 7.
For example, two push rods 4 are provided on each side of the mounting groove 7. The mounting groove 7 is rectangular, and the cross section of the card is rectangular. The drawing card is embedded in the mounting groove 7. On each side of the rectangular mounting groove 7, at least two push rods 4 are provided. The card body 6 in the rectangular mounting groove 7 can be accurately adjusted to a proper position and fixed in the mounting groove 7. The problem of unstable looseness of the fixed picture card body 6 is avoided.
Of course, the number of push rods 4 can be determined by those skilled in the art according to the actual situation, and is not limited herein.
In one example, the push rod 4 is a spring-loaded jack. A threaded hole is arranged on the tool base 3. The spring jackscrew is in threaded fit with the threaded hole.
For example, the push rod 4 may be a spring-loaded wire. Be provided with the screw hole on frock base 3, spring jackscrew and screw hole cooperation can be through rotatory spring jackscrew with picture card body 6 or movable block regulation to suitable position, have improved the measurement accuracy of frock. The spring jackscrew has simple installation flow and reduces the difficulty of the installation process. In addition, the spring jackscrew can accurately adjust the distance in the micron-sized range, so that the measurement precision of the tool is further improved, and the precision requirement of optical measurement equipment can be met.
According to another embodiment of the present disclosure, a method for calibrating a graphics card tooling is provided. The calibration method comprises the following steps:
the graphic card body 6 is installed in the installation groove 7 of the tool base 3. After the graphic card body 6 is processed by the laser carving machine, the graphic card body 6 is installed in the installation groove 7 of the tool base 3 to wait for adjustment. After a datum line is established by adjusting the position of the positioning structure on the tooling base 3, measuring the distance between the graphic card body 6 and the positioning structure by using measuring equipment, and adjusting the graphic card body 6 to a proper position. So that the distance between the card body 6 and the positioning structure reaches a first predetermined value.
The measuring device may be a 2.5D size measuring device or a 3D size measuring device as long as the measurement can be achieved, and is not limited herein.
In one example, the positioning structure includes a first positioning hole 1 and a second positioning hole 2. The first positioning hole 1 and the second positioning hole 2 are both arranged on the tool base 3 and are both positioned on the same side of the mounting groove 7. The first positioning hole 1 and at least one second positioning hole 2 are arranged in a straight line.
Before the step of adjusting the position of the positioning structure by the adjusting device to make the distance between the card body 6 and the positioning structure reach the first predetermined value, the method further comprises:
the distance between the second positioning hole 2 and the first positioning hole 1 is adjusted to reach a second predetermined value.
For example, the positioning structure includes a first positioning hole 1 and a second positioning hole 2. The first positioning hole 1 and the second positioning hole 2 are both arranged on the tool base 3 and are both positioned on the same side of the mounting groove 7. The distance between the first positioning hole 1 and the second positioning hole 2 is a second predetermined value. Before the step of adjusting the position of the positioning structure by the adjusting device to make the distance between the card body 6 and the positioning structure reach the first predetermined value, the method further comprises: the distance between the first positioning hole 1 and the second positioning hole 2 is adjusted to a second predetermined value.
In this embodiment, the distance between the first positioning hole 1 and the second positioning hole 2 is adjusted to a second predetermined distance, the second uses the measuring device to measure the distance from the graphic card body 6 to the positioning hole, the third uses the adjusting device to move the graphic card body 6 to a set position, and the fourth completes the tool calibration process. The whole calibration scheme has high measurement accuracy and is simple to operate.
The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (9)
1. The utility model provides a picture card frock which characterized in that includes:
the tool comprises a tool base, wherein a mounting groove is formed in the tool base;
the image card body is embedded in the mounting groove, and a gap is formed between the side edge of the image card body and the side wall of the mounting groove;
the positioning structure is arranged on the tool base and comprises a first positioning hole and at least one second positioning hole, the first positioning hole and the second positioning hole are arranged on the tool base and are positioned on the same side of the mounting groove, the first positioning hole and the at least one second positioning hole are arranged in a straight line, and the positioning structure is used for positioning the graphic card body;
and the adjusting device is arranged around the mounting groove and is used for adjusting the position of the graphic card body relative to the positioning structure.
2. The graphic card tooling of claim 1, further comprising a moving assembly comprising a moving block embedded in the tooling base, the moving block having the second locating hole disposed thereon, and a moving device configured to move the moving block.
3. The graphic card tooling according to claim 2, wherein the moving device comprises a push rod and an elastic element;
the moving block comprises a first side and a third side, and the first side and the third side are oppositely arranged; the push rod is arranged on the first side of the moving block, and the elastic element is arranged on the third side of the moving block.
4. The graphic card tooling of claim 1, wherein the adjustment device comprises a plurality of push rods disposed about the mounting slot.
5. The graphic card tooling of claim 4, wherein at least two push rods are disposed on the same side of the graphic card body.
6. The graphic card tooling according to claim 5, wherein the mounting groove is rectangular, the cross section of the graphic card body is rectangular, and at least two push rods are arranged on each side of the mounting groove.
7. A graphic card tool as claimed in any one of claims 3 to 6, wherein the push rod is a spring jack, a threaded hole is provided in the tool base, and the spring jack is in threaded engagement with the threaded hole.
8. The method for calibrating the graphic card tool is characterized by comprising the following steps of:
the positioning structure comprises a first positioning hole and a second positioning hole, wherein the first positioning hole and the second positioning hole are both arranged on the tool base and are both positioned on the same side of the mounting groove, and the first positioning hole and at least one second positioning hole are arranged in a straight line;
installing the graphic card body into an installation groove of the tool base;
and adjusting the position of the positioning structure through an adjusting device so that the distance between the graphic card body and the positioning structure reaches a first preset value.
9. The method according to claim 8, further comprising, before the step of adjusting the position of the positioning structure by the adjusting device to make the distance between the card body and the positioning structure reach a first predetermined value:
and adjusting the distance between the second positioning hole and the first positioning hole to reach a second preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667484.1A CN114485393B (en) | 2021-12-30 | 2021-12-30 | Picture card tool and calibration method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667484.1A CN114485393B (en) | 2021-12-30 | 2021-12-30 | Picture card tool and calibration method |
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| CN114485393A CN114485393A (en) | 2022-05-13 |
| CN114485393B true CN114485393B (en) | 2024-03-12 |
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