A method and apparatus for determining a printing compensation parameter, and a related device

Abstract

The application relates to the field of 3D printing technology, in particular to a printing compensation parameter determination method and device and related equipment; the method comprises the following steps: using a to-be-tested liquid photosensitive resin to print an entity model of a prefabricated determination piece according to the theoretical size of a three-dimensional model of the prefabricated determination piece; the prefabricated determination piece comprises a plurality of determination parts with different sizes; scanning the entity model to obtain three-dimensional point cloud data of the entity model; determining the actual sizes of the determination parts according to the three-dimensional point cloud data; determining a size compensation coefficient corresponding to the to-be-tested liquid photosensitive resin in a preset direction according to the theoretical size and the actual size; the size compensation coefficient is used for size compensation when printing is performed by using the to-be-tested liquid photosensitive resin; the application can solve the technical problems of a complicated printing compensation parameter determination process and insufficient accuracy of the determined printing compensation parameter in the prior art.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and in particular to a method, apparatus and related equipment for measuring printing compensation parameters. Background Technology

[0002] In printing technology, liquid photosensitive resin can be used to print three-dimensional models by curing layer by layer under the illumination of a specific light source. Because three-dimensional models printed with liquid photosensitive resin as a printing material have excellent properties such as high strength, high temperature resistance and water resistance, liquid photosensitive resin is widely used.

[0003] In practice, liquid photosensitive resins shrink during the curing process, resulting in a discrepancy between the actual and theoretical dimensions of the 3D model obtained after curing. Different types of liquid photosensitive resins exhibit varying degrees of shrinkage during curing. Therefore, it is necessary to determine corresponding printing compensation parameters for each type of liquid photosensitive resin. These parameters are then used to compensate for various errors and deviations that may occur during the printing process, thereby ensuring that the actual dimensions of the final printed 3D model conform to the theoretical dimensions.

[0004] In traditional measurement processes, the measurement personnel use liquid photosensitive resin to print precision parts, and then manually measure the difference between the actual size and the theoretical size of the precision parts to determine the printing compensation parameters of the liquid photosensitive resin. However, according to practical experience, in order to ensure accurate printing compensation parameters, the above measurement process is usually repeated many times, resulting in very low measurement efficiency. In addition, since the above process is performed manually, even if the measurement process is repeated many times, accurate printing compensation parameters still cannot be obtained. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a method, apparatus and related equipment for measuring printing compensation parameters, so as to solve the technical problems of cumbersome measurement process and insufficient accuracy of the measured printing compensation parameters in the prior art.

[0006] In a first aspect, this application provides a method for determining printing compensation parameters, the method comprising:

[0007] Based on the theoretical dimensions of the three-dimensional model of the prefabricated measuring component, a solid model of the prefabricated measuring component is obtained by printing using the liquid photosensitive resin to be tested; wherein, the prefabricated measuring component includes multiple measuring parts of different sizes, and the multiple measuring parts are arranged sequentially in a preset direction;

[0008] The entity model is scanned to obtain its three-dimensional point cloud data.

[0009] Based on the three-dimensional point cloud data, determine the actual dimensions of each of the measuring parts;

[0010] Based on the theoretical dimensions and the actual dimensions, a size compensation coefficient is determined for the liquid photosensitive resin under test in the preset direction; wherein, the size compensation coefficient is used for size compensation when printing with the liquid photosensitive resin under test.

[0011] Secondly, this application provides a device for measuring printing compensation parameters, the device comprising: a printing module, an actual size determination module, and a parameter determination module;

[0012] The printing module is used to print a solid model of the prefabricated test piece using the liquid photosensitive resin to be tested, based on the theoretical dimensions of the three-dimensional model of the prefabricated test piece; wherein the prefabricated test piece includes multiple measuring parts of different sizes, and the multiple measuring parts are arranged sequentially in a preset direction;

[0013] The actual size determination module is used to scan the entity model to obtain the three-dimensional point cloud data of the entity model;

[0014] The actual size determination module is used to determine the actual size of each of the measuring parts based on the three-dimensional point cloud data;

[0015] The parameter determination module is used to determine the size compensation coefficient corresponding to the liquid photosensitive resin under test in the preset direction based on the theoretical size and the actual size; wherein, the size compensation coefficient is used for size compensation when printing with the liquid photosensitive resin under test.

[0016] Thirdly, this application provides an electronic device including a processor and a memory, the memory being used to store an application program, and the processor enabling the electronic device to implement the above-described method for measuring print compensation parameters by running or executing a software program stored in the memory.

[0017] Fourthly, this application provides a computer-readable storage medium for storing program code executed by a processor, the program code being used to implement the above-described method for measuring print compensation parameters.

[0018] Fifthly, this application provides a computer program product comprising computer instructions that, when executed on an electronic device, cause the electronic device to perform the aforementioned method for measuring print compensation parameters.

[0019] Beneficial effects:

[0020] This application provides a method for determining printing compensation parameters. The method includes: printing a solid model of the pre-made measuring part using a liquid photosensitive resin to be tested, based on the theoretical dimensions of the three-dimensional model of the pre-made measuring part; wherein the pre-made measuring part includes multiple measuring parts of different sizes, which are arranged sequentially in a preset direction; scanning the solid model to obtain three-dimensional point cloud data of the solid model; determining the actual dimensions of each measuring part based on the three-dimensional point cloud data; and determining the size compensation coefficient in the preset direction corresponding to the liquid photosensitive resin to be tested, based on the theoretical dimensions and actual dimensions; wherein the size compensation coefficient is used for size compensation when printing using the liquid photosensitive resin to be tested.

[0021] In summary, firstly, since the prefabricated measuring component provided in this application includes multiple measuring parts of different sizes, these multiple measuring parts can provide multiple local areas for determining dimensional differences at once. Therefore, this application can obtain the printing compensation parameters through a single measuring process, eliminating the need for multiple measuring processes. Secondly, this application determines the actual size of the solid model by scanning the three-dimensional point cloud data of the solid model. Compared with manual measurement, this method of determining the actual size can significantly improve the accuracy and efficiency of the measurement. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. The following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic flowchart illustrating the method for determining printing compensation parameters provided in this application embodiment;

[0024] Figure 2 A schematic diagram of the solid model of the first prefabricated measuring component provided in the embodiments of this application;

[0025] Figure 3 This is a schematic diagram of the solid model of the second prefabricated measuring component provided in the embodiments of this application;

[0026] Figure 4 This is a schematic diagram of the structure of the device for measuring printing compensation parameters provided in the embodiments of this application. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] This application provides a method for determining printing compensation parameters, such as... Figure 1 As shown, Figure 1 The flowchart of the method for measuring printing compensation parameters provided in the embodiments of this application is shown below. The method includes steps S110 to S140, as detailed below:

[0029] S110: Based on the theoretical dimensions of the three-dimensional model of the prefabricated test piece, a solid model of the prefabricated test piece is obtained by printing using the liquid photosensitive resin to be tested.

[0030] The prefabricated measuring component includes multiple measuring parts of different sizes, which are arranged sequentially in a preset direction.

[0031] Specifically, in order to solve the technical problem in the prior art that "the measurement process is usually repeated many times, resulting in very low measurement efficiency of the entire measurement process", this application provides a pre-made measuring component, which is specially designed for measuring the printing compensation parameters corresponding to the liquid photosensitive resin to be tested.

[0032] The prefabricated measuring component includes multiple measuring sections of different sizes; wherein, a "measuring section" is a local area within the prefabricated measuring component. In this embodiment, the purpose of setting multiple measuring sections of different sizes is to provide multiple local areas for comparison at once. Therefore, in this embodiment, the printing compensation parameters can be measured in a single measurement process, eliminating the need for multiple measurement processes.

[0033] The term "for comparison" means that its theoretical and actual dimensions can be compared to determine the dimensional error corresponding to that local area.

[0034] like Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a physical model of the first prefabricated measuring component provided in an embodiment of this application. The first prefabricated measuring component includes multiple measuring parts arranged along a preset direction. Each measuring part includes a protruding measuring part and a grooved measuring part. Figure 2 As can be seen, different measuring parts have different dimensions, and multiple dimensions can also be obtained by combining different measuring parts. Figure 2 In and The designation "etc." indicates that the first prefabricated measuring piece can be provided with multiple dimensions; specifically, Figure 2 In and This indicates the dimensions of the groove-shaped measuring section. This indicates the size of the protruding measuring part. and Both refer to the dimensions of a "combined measuring part" obtained by combining two protruding measuring parts and one groove-shaped measuring part. This refers to the dimensions of a "combined test section" obtained by combining two groove-shaped measuring sections and one protruding measuring section. These dimensions can be used to determine the dimensional error between the theoretical and actual dimensions of the measuring section.

[0035] according to Figure 2 It is understood that by arranging the positions and dimensions of multiple measuring parts in the prefabricated measuring component provided in this application embodiment, a variety of selectable dimensions can be obtained, providing rich calculation basis for determining printing compensation parameters and further improving the accuracy of the determined printing compensation parameters. In this application embodiment, there are two preset directions, wherein the first preset direction and the second preset direction are arranged perpendicularly; for each preset direction, since the multiple measuring parts arranged along the preset direction have different dimensions in the preset direction, the corresponding determined dimensional error is also about the preset direction. That is, the printing compensation parameters determined based on the multiple measuring parts arranged along the preset direction are used to compensate for the dimensional error of the liquid photosensitive resin to be tested in the preset direction.

[0036] S120: Scan the solid model to obtain the 3D point cloud data of the solid model.

[0037] Specifically, in practice, the solid model is placed on the worktable of the point cloud scanning equipment, ensuring that it does not move during the scanning process. During scanning, it should be ensured that every part of the solid model is scanned.

[0038] S130: Determine the actual dimensions of each measuring part based on the three-dimensional point cloud data.

[0039] Specifically, after preprocessing the 3D point cloud data, the dimensions of each measuring part are measured using the measurement tools in the 3D point cloud data processing software to obtain the actual dimensions of each measuring part.

[0040] S140: Determine the size compensation coefficient of the liquid photosensitive resin under test in a preset direction based on the theoretical and actual dimensions. This size compensation coefficient is used for size compensation when printing with the liquid photosensitive resin under test.

[0041] Specifically, based on the actual dimensions of multiple measuring units, the size compensation coefficients of the liquid photosensitive resin to be tested in the first preset direction and the second preset direction are determined respectively; the above two size compensation coefficients are input into the size compensation option in the control software of the 3D printer, and are subsequently used for size compensation when printing with the liquid photosensitive resin to be tested.

[0042] In one implementation, the preset direction includes: within the target coordinate system Axial direction and In the axial direction, the target coordinate system is a coordinate system constructed based on the exposure surface of the photopolymer printer, wherein the photopolymer printer is a printer for solid models; the size compensation coefficient includes: Shaft offset calibration factor and Shaft offset calibration coefficient; S140 includes: steps (1) to (2), details of which are shown below:

[0043] Step (1): Based on in axial direction The actual dimensions of each test section are determined using the first formula. Shaft offset calibration factor;

[0044] The first formula is shown below:

[0045] ;

[0046] In the formula, express Shaft offset calibration factor;

[0047] express The first in the axial direction The theoretical dimensions of each measuring part ; express axial direction The average theoretical dimensions of each measuring part; express The first in the axial direction The actual dimensions of each measuring part; express axial direction The average value of the actual dimensions of each measuring part.

[0048] Specifically, such as Figure 3 As shown, Figure 3 This is a schematic diagram of the solid model of the second prefabricated measuring component provided in the embodiments of this application. Figure 3 The middle part is calculated based on the actual dimensions of the groove-shaped test section. In practice, the shaft offset calibration factor can also be calculated based on the actual dimensions of the protruding test section. Axis offset calibration coefficient.

[0049] In practice, the printing compensation parameters are related to the preset direction. Therefore, during the calculation process, it is necessary to clarify the correspondence between the preset direction in the solid model and the relevant actual size data. To reduce errors, this embodiment of the application provides markings on the surface of the first prefabricated measuring piece to distinguish different preset directions, such as... Figure 3 The letters A and B in the solid model shown correspond to respectively Axial direction and Axial direction.

[0050] Step (2): Based on axial direction The actual dimensions of each test section are determined using the second formula. Shaft offset calibration factor;

[0051] The second formula is shown below:

[0052] ;

[0053] In the formula, express Shaft offset calibration factor;

[0054] express The first in the axial direction The theoretical dimensions of each measuring part ; express axial direction The average theoretical dimensions of each measuring part; express The first in the axial direction The actual dimensions of each measuring part; express axial direction The average value of the actual dimensions of each measuring part.

[0055] Specifically, in the embodiments of this application, calculation Methods and calculations for shaft offset calibration coefficients The method for calculating the shaft offset calibration factor is the same; please refer to the calculation method. Method for calculating shaft offset calibration coefficient The shaft offset calibration coefficient will not be elaborated here.

[0056] In one implementation, the prefabricated measuring component is rectangular in shape and includes two sets of borders; each set of borders includes two adjacent borders, one of which is along... Extending along the axial direction, another border runs along... Extending in the axial direction; S140 also includes: step (3), details of which are shown below:

[0057] Step (3): Based on the area included in each group of borders The theoretical and actual dimensions of each measurement section are used to determine the contour compensation value corresponding to the target liquid photosensitive resin using the third formula.

[0058] The measurement sections include: Axial direction and The measuring part along the axial direction, the outer diameter and inner diameter of the frame in the 3D model; the contour compensation value is used for contour compensation when printing with the liquid photosensitive resin to be tested;

[0059] The third formula is shown below:

[0060] ;

[0061] In the formula, This indicates the contour compensation value; Indicates the first The theoretical dimensions of each measurement section ; express The average theoretical dimensions of each measured section; Indicates the first The actual dimensions of each measurement section; express The average value of the actual dimensions of each measured section.

[0062] Specifically, in practice, contour compensation is used to compensate for uneven edges or loss of detail that may occur during the printing process. Based on the contour compensation values, the edges or details of the 3D model are fine-tuned to ensure that the printed solid model has a clear outline and rich details.

[0063] The data used in calculating the contour compensation values ​​includes: Multiple test sections along the axial direction, as well as the outer and inner diameters of the frame, The total number of test sections along the axial direction, as well as the outer and inner diameters of the frame, is [number missing]. In this embodiment of the application, the above data is referred to as the measurement section because the inner diameter and outer diameter are a section with relatively large values.

[0064] It should be emphasized that the rectangular prefabricated measuring component provided in this application embodiment has two symmetrical sets of borders, each set of borders corresponding to There are two measurement segments, therefore, for the two sets of borders, 2 can be determined. Two measurement sections were subsequently used. The theoretical and actual dimensions of each measurement section, and the calculated contour compensation values. Compared to using The theoretical and actual dimensions of each measurement section, and the calculated contour compensation values. That would be more accurate.

[0065] In one implementation, after S140, the method further includes steps (4) to (6), as detailed below:

[0066] Step (4): Determine the theoretical dimensions of the three-dimensional model of the printout to be printed using the test liquid photosensitive resin.

[0067] Specifically, in actual operation, after determining the size compensation coefficient and contour compensation value, they are input into the size compensation and contour compensation options in the 3D printer's control software, and are subsequently used for size compensation and contour compensation when printing with the liquid photosensitive resin to be tested.

[0068] Step (5): Based on the size compensation coefficient and the contour compensation value, perform size compensation and contour compensation on the three-dimensional model of the printed part to obtain the corrected theoretical size of the printed part.

[0069] Specifically, after size compensation and contour compensation, the 3D model will have new theoretical dimensions, namely the corrected theoretical dimensions.

[0070] Step (6): Based on the corrected theoretical dimensions, print using the target liquid photosensitive resin to obtain a solid model of the printed part.

[0071] Specifically, when a solid model of a printed part is obtained by printing using the target liquid photosensitive resin according to the corrected theoretical dimensions, the actual size of the solid model is closer to the actual size of the solid model of the printed part obtained by printing without using the corrected theoretical dimensions.

[0072] Second, this application provides a device for measuring printed compensation parameters, such as... Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of the printing compensation parameter measuring device provided in the embodiments of this application. The device includes: a printing module 310, an actual size determination module 320, and a parameter determination module 330.

[0073] The printing module 310 is used to print a solid model of the pre-made measuring component using the liquid photosensitive resin to be tested, based on the theoretical dimensions of the three-dimensional model of the pre-made measuring component. The pre-made measuring component includes multiple measuring parts of different sizes, which are arranged sequentially in a preset direction.

[0074] The actual size determination module 320 is used to scan the solid model to obtain the three-dimensional point cloud data of the solid model;

[0075] The actual size determination module 320 is used to determine the actual size of each measuring part based on the three-dimensional point cloud data;

[0076] The parameter determination module 330 is used to determine the size compensation coefficient of the liquid photosensitive resin to be tested in a preset direction based on the theoretical size and the actual size; wherein, the size compensation coefficient is used to perform size compensation when printing with the liquid photosensitive resin to be tested.

[0077] In one implementation, the preset direction includes: within the target coordinate system Axial direction and In the axial direction, the target coordinate system is a coordinate system constructed based on the exposure surface of the photopolymer printer, wherein the photopolymer printer is a printer for printing solid models; the size compensation coefficient includes: Shaft offset calibration factor and Shaft offset calibration coefficient; parameter determination module 330, used to determine the shaft offset calibration coefficient based on the following parameters: axial direction The theoretical and actual dimensions of each measuring part are determined using the first formula. Shaft offset calibration factor;

[0078] Parameter determination module 330 is used to determine parameters based on the data in the specified parameters. axial direction The theoretical and actual dimensions of each measuring part are determined using the second formula. Axis offset calibration coefficient.

[0079] In one implementation, the prefabricated measuring component is rectangular in shape, and includes two sets of borders; each set of borders includes two adjacent borders, one of which is along the... Extending along the axial direction, another of the said borders runs along the... Extending along the axial direction; parameter determination module 330 is also used for each group of borders. The theoretical and actual dimensions of each measurement section are used to determine the contour compensation value corresponding to the target liquid photosensitive resin using the third formula.

[0080] The measurement sections include: Axial direction and The measuring part in the axial direction, the outer diameter and inner diameter of the frame in the 3D model; the contour compensation value is used for contour compensation when printing with the liquid photosensitive resin to be tested.

[0081] In one implementation, the first formula is shown below:

[0082] ;

[0083] In the formula, express Shaft offset calibration factor; express The first in the axial direction The theoretical dimensions of each measuring part ; express axial direction The average theoretical dimensions of each measuring part; express The first in the axial direction The actual dimensions of each measuring part; express axial direction The average of the actual dimensions of each measuring part;

[0084] And, the second formula is as follows:

[0085] ;

[0086] In the formula, express Shaft offset calibration factor; express The first in the axial direction The theoretical dimensions of each measuring part ; express axial direction The average theoretical dimensions of each measuring part; express The first in the axial direction The actual dimensions of each measuring part; express axial direction The average value of the actual dimensions of each measuring part. In one implementation, the third formula is as follows:

[0087] ;

[0088] In the formula, This indicates the contour compensation value; Indicates the first The theoretical dimensions of each measurement section ; express The average theoretical dimensions of each measured section; Indicates the first The actual dimensions of each measurement section; express The average value of the actual dimensions of each measured section.

[0089] In one implementation, the printing module 310 is further configured to determine the theoretical dimensions of the three-dimensional model of the printout to be printed using the test liquid photosensitive resin;

[0090] The printing module 310 is also used to perform size compensation and contour compensation on the three-dimensional model of the printed part according to the size compensation coefficient and the contour compensation value to obtain the corrected theoretical size of the printed part.

[0091] The printing module 310 is also used to print using the target liquid photosensitive resin according to the corrected theoretical dimensions to obtain a solid model of the printed part.

[0092] Third, this application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps S110 to S140 provided in the above embodiments.

[0093] Fourth, this application also provides a computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor to perform the steps of S110 to S140 of the above embodiments.

[0094] Fifth, the computer program product provided in this application includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods in the preceding method embodiments. For specific implementation, please refer to the steps of S110 to S140 of the method embodiments, which will not be repeated here.

[0095] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and there may be other division methods in actual implementation. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be through some communication interface; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0096] Furthermore, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0097] Furthermore, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0098] It should be noted that if the function is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0099] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0100] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for determining printing compensation parameters, characterized in that, The method includes: Based on the theoretical dimensions of the three-dimensional model of the prefabricated measuring component, a solid model of the prefabricated measuring component is obtained by printing using the liquid photosensitive resin to be tested; wherein, the prefabricated measuring component includes multiple measuring parts of different sizes, and the multiple measuring parts are arranged sequentially in a preset direction; The entity model is scanned to obtain its three-dimensional point cloud data. Based on the three-dimensional point cloud data, determine the actual dimensions of each of the measuring parts; Based on the theoretical dimensions and the actual dimensions, a size compensation coefficient is determined for the liquid photosensitive resin under test in the preset direction; wherein, the size compensation coefficient is used for size compensation when printing with the liquid photosensitive resin under test; The preset direction includes the x-axis and y-axis directions within the target coordinate system, where the target coordinate system is a coordinate system constructed based on the exposure surface of the photopolymerization printer, and the photopolymerization printer is a printer that prints the physical model. The size compensation coefficient includes the x-axis offset calibration coefficient and the y-axis offset calibration coefficient. Determining the size compensation coefficient corresponding to the liquid photosensitive resin to be tested in the preset direction includes: determining the x-axis offset calibration coefficient using a first formula based on the theoretical and actual dimensions of I measuring parts in the x-axis direction; and determining the y-axis offset calibration coefficient using a second formula based on the theoretical and actual dimensions of J measuring parts in the y-axis direction. The prefabricated measuring component is rectangular in shape and includes two sets of borders. Each set of borders includes two adjacent borders, one of which extends along the x-axis and the other extends along the y-axis. After determining the y-axis offset calibration coefficient using a second formula based on the theoretical and actual dimensions of the J measuring portions along the y-axis, the method further includes: determining the contour compensation value corresponding to the target liquid photosensitive resin using a third formula based on the theoretical and actual dimensions of the K measuring segments included in each set of borders. The measuring segments include the measuring portions along the x-axis and y-axis, and the outer and inner diameters of the borders in the three-dimensional model. The contour compensation value is used for contour compensation when printing with the liquid photosensitive resin to be tested.

2. The method according to claim 1, characterized in that, The first formula is shown below: ； In the formula, express Shaft offset calibration factor; express The first in the axial direction The theoretical dimensions of each measuring part ; express axial direction The average theoretical dimensions of each measuring part; express The first in the axial direction The actual dimensions of each measuring part; express axial direction The average of the actual dimensions of each measuring part; And, the second formula is as follows: ； In the formula, express Shaft offset calibration factor; express The first in the axial direction The theoretical dimensions of each measuring part ; express axial direction The average theoretical dimensions of each measuring part; express The first in the axial direction The actual dimensions of each measuring part; express axial direction The average value of the actual dimensions of each measuring part.

3. The method according to claim 1, characterized in that, The third formula is as follows: ； In the formula, This indicates the contour compensation value; Indicates the first The theoretical dimensions of each measurement section ; express The average theoretical dimensions of each measured section; Indicates the first The actual dimensions of each measurement section; express The average value of the actual dimensions of each measured section.

4. The method according to claim 1, characterized in that, The basis is axial direction After determining the contour compensation value corresponding to the target liquid photosensitive resin using a third formula, based on the theoretical and actual dimensions of each measurement segment, the method further includes: Determine the theoretical dimensions of the three-dimensional model of the printout to be printed using the liquid photosensitive resin to be tested; Based on the size compensation coefficient and the contour compensation value, size compensation and contour compensation are performed on the three-dimensional model of the printed part to obtain the corrected theoretical size of the printed part; Based on the corrected theoretical dimensions, the target liquid photosensitive resin is used for printing to obtain a solid model of the printed part.

5. A device for measuring printing compensation parameters, characterized in that, The device includes: a printing module, an actual size determination module, and a parameter determination module; The printing module is used to print a solid model of the prefabricated test piece using the liquid photosensitive resin to be tested, based on the theoretical dimensions of the three-dimensional model of the prefabricated test piece; wherein the prefabricated test piece includes multiple measuring parts of different sizes, and the multiple measuring parts are arranged sequentially in a preset direction; The actual size determination module is used to scan the entity model to obtain the three-dimensional point cloud data of the entity model; The actual size determination module is used to determine the actual size of each of the measuring parts based on the three-dimensional point cloud data; The parameter determination module is used to determine the size compensation coefficient corresponding to the liquid photosensitive resin under test in the preset direction based on the theoretical size and the actual size; wherein, the size compensation coefficient is used for size compensation when printing with the liquid photosensitive resin under test; The preset directions include the x-axis and y-axis directions within the target coordinate system, where the target coordinate system is a coordinate system constructed based on the exposure surface of the photopolymer printer, and the photopolymer printer is a printer that prints the physical model; the size compensation coefficients include the x-axis offset calibration coefficient and the y-axis offset calibration coefficient; the parameter determination module is specifically used to: determine the x-axis offset calibration coefficient using a first formula based on the theoretical and actual dimensions of I measuring parts in the x-axis direction; and determine the y-axis offset calibration coefficient using a second formula based on the theoretical and actual dimensions of J measuring parts in the y-axis direction. The prefabricated measuring component is rectangular in shape and includes two sets of borders. Each set of borders includes two adjacent borders, one of which extends along the x-axis and the other extends along the y-axis. The parameter determination module is further used to determine the contour compensation value corresponding to the target liquid photosensitive resin by a third formula based on the theoretical and actual dimensions of the K measuring segments included in each set of borders. The measuring segments include the measuring parts in the x-axis and y-axis directions, and the outer and inner diameters of the borders in the three-dimensional model. The contour compensation value is used for contour compensation when printing with the liquid photosensitive resin to be tested.

6. An electronic device, characterized in that, The electronic device includes a processor and a memory, the memory being used to store an application program, and the processor enabling the electronic device to implement the method for determining the print compensation parameter as described in any one of claims 1 to 4 by running or executing a software program stored in the memory.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store program code executed by a processor, the program code being used to implement the method for determining the print compensation parameter as described in any one of claims 1 to 4.

8. A computer program product, characterized in that, The computer program product includes computer instructions that, when executed on an electronic device, cause the electronic device to perform the method for measuring the print compensation parameters as described in any one of claims 1 to 4.

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