A 3d exp platform modeling method based on a two-dimensional layout of relief plugs

Abstract

The application provides a 3DEXP platform modeling method based on a two-dimensional arrangement drawing of a relief valve. The technical scheme comprises the following steps: firstly, analyzing information requirements of a relief valve model arrangement of a 3DEXP platform, and setting a relief valve equipment model library in the 3DEXP according to a relief valve standard; then, reading relief valve positioning information from a two-dimensional arrangement drawing, the two-dimensional arrangement drawing of the relief valve containing complete coordinate axis information of the whole ship, and based on this, performing two-dimensional arrangement of the relief valve to read out XY coordinate values of the relief valve; then, in the case of determining two coordinate parameters, establishing vertical lines based on the XY coordinate values of the relief valve in the 3DEXP platform to determine Z coordinate values; finally, setting a separate coordinate axis for each relief valve, and taking intersection lines of YZ and XZ planes of the coordinate axis and an outer plate as a basis for inclination of the relief valve, thereby completing model arrangement of the relief valve after twice inclination rotation of the relief valve, and realizing arrangement of the relief valve adhering to the outer plate.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ships, and particularly relates to a 3DEXP platform modeling method based on a two-dimensional layout drawing of a release plug. BACKGROUND

[0002] The release plug arranged in a ship is mainly used at the bottom of a cabin such as a water cabin and an oil cabin, so as to discharge residual substances or accumulated water in the cabin when needed. The release plug is usually arranged at the rear of a double-bottom cabin, close to a transverse bulkhead and close to a ship centerline, so as to facilitate the removal of residual substances and accumulated water in the cabin, especially after the water pressure test of the oil cabin in the shipbuilding stage, or after the ship is docked for repair and cabin washing.

[0003] As a relatively large number of outfitting pieces, the release plug needs to be arranged in close contact with the outer plate. The model needs to be adjusted manually in many steps. Specifically, for each release plug, especially for the release plug at a position with large curvature, the two-dimensional layout drawing usually cannot accurately provide the required rotation angle of the model. Therefore, manual adjustment is required one by one in the model arrangement. Moreover, due to uncontrollable external factors, the release plug may also need to be adjusted in the later stage. Therefore, the model building is a repeated work, which is time-consuming and prone to errors. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a 3DEXP platform modeling method based on a two-dimensional layout drawing of a release plug, so as to better solve the technical problems encountered in the design of existing ship drawings.

[0005] A 3DEXP platform modeling method based on a two-dimensional layout drawing of a release plug, at least comprising the following steps:

[0006] S100: classifying the model specifications of the release plug, editing the two-dimensional layout drawing of the release plug of different specifications and models to form a CAD adjustable block, and associating the two-dimensional layout drawing of the release plug with the specifications and models of the release plug, so as to realize the calling of different specifications and models of the release plug by the CAD adjustable block;

[0007] S200: counting the numbers and cabin information of the release plug, setting an adjustable attribute block for the two-dimensional layout number of the release plug, and setting the number and cabin information of the release plug in the adjustable attribute block of the two-dimensional layout number, so as to provide information for subsequent reading;

[0008] S300: arranging the CAD adjustable block and the editable attribute block for the two-dimensional layout of the release plug, and setting the coordinate axes contained in the ship local cabin background drawing arranged with the release plug as a whole ship coordinate axis block, so as to read the corresponding XY coordinate axis parameters of each release plug and generate a two-dimensional layout drawing of the release plug;

[0009] S400: Based on the two-dimensional layout of the relief valve, the two-dimensional layout number, specification and model number, and XY coordinate axis parameters of the relief valve are read and written into the information table to obtain the operation workbook;

[0010] S500: Based on the XY coordinate axis parameters corresponding to the two-dimensional layout number of the relief valve, the hull shell and the full-ship coordinate axis are called in the 3DEXP corresponding project, vertical modeling is performed to obtain the Z value of the intersection point of each XY coordinate axis parameter and the hull shell, the Z value is the height of the relief valve, and the Z value is fed back to the information table of the relief valve in S400 to obtain the positioning XYZ value of the relief valve;

[0011] S600: Based on the positioning XYZ value of the relief valve, a coordinate axis is established in the model containing the hull shell and the full-ship coordinate axis, and the newly established coordinate axis is named as the corresponding relief valve part number;

[0012] S700: Based on the newly established coordinate axis of the relief valve, the corresponding model library is set in 3DEXP, the relief valve model in 3DEXP is called according to the specification and model number corresponding to the relief valve part number in the table, the coordinate axis is assembled and arranged, and the model arrangement of the relief valve is completed.

[0013] In an optional implementation, in the process of forming the CAD adjustable block, the relief valve is made into the same dynamic block based on different physical parameters, the visibility is selected according to the required specification and model to complete the arrangement, and the current visibility state of the dynamic block and the specification and model of the relief valve are read to associate the two-dimensional layout of the relief valve and the specification and model of the relief valve.

[0014] In an optional implementation, the physical parameters are plate thickness parameters and sealing material parameters.

[0015] In an optional implementation, in S300, the coordinate axis is set in a 1:1 ratio with the ship, and the coordinate axis contains all the rib points of the ship, and the XY coordinate axis parameters of each relief valve are read based on the coordinate axis.

[0016] In an optional implementation, in S600, the newly established coordinate axis is named as the corresponding relief valve part number, and then the XZ plane and the YZ plane of each coordinate axis are locally intersected with the hull shell to determine the rotation angle required for the relief valve to be arranged based on the outer plate.

[0017] In an optional implementation, the XZ plane and the YZ plane of each relief valve positioning coordinate axis are intersected with the hull shell within a preset distance range based on the intersection point of the corresponding coordinate axis origin and the X axis / Y axis direction, and then the direction determined by the two points of the end point of the corresponding coordinate axis based on the coordinate axis origin and the intersection point of the X axis / Y axis direction is deflected, so that the X axis and the Y axis of the coordinate axis are respectively parallel to the XZ plane and the YZ plane and the local intersection line of the outer plate, to realize the fitting arrangement of the relief valve.

[0018] In an optional implementation, the preset distance is between 20 mm and 40 mm.

[0019] In an optional implementation, the method further comprises:

[0020] S800: After the model arrangement of the relief valve is completed, the specifications and positioning information of the relief valve model are reversely data-extracted to form an information table, and the information table is compared with the information table extracted from the two-dimensional plane layout of the relief valve, so as to ensure the accuracy of the specifications and positioning information of the relief valve.

[0021] Compared with the prior art, the technical scheme provided in the application has the following beneficial effects:

[0022] The technical scheme provided in the application is based on the two-dimensional layout of the relief valve to perform 3DEXP platform modeling, two-dimensional driving three-dimensional modeling is applied, the requirements from detailed design to production design are met, intelligent modeling of components is realized, and through two-dimensional driving three-dimensional modeling, the uniqueness of the data source from top to bottom is realized, so that the working efficiency of the drawing design checking personnel is greatly improved under the condition of ensuring data uniformity and no deviation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A method step diagram of the technical scheme provided in the application is shown;

[0024] Figure 2 A common relief valve type and specification information table is shown;

[0025] Figure 3 A relief valve plane dynamic block example diagram is shown;

[0026] Figure 4 A relief valve related information attribute block schematic diagram is shown;

[0027] Figure 5 A typical arrangement schematic diagram of the relief valve is shown;

[0028] Figure 6 A full-ship hull shell typical model schematic diagram is shown;

[0029] Figure 7 A relief valve model library is shown;

[0030] Figure 8 A relief valve assembly information input table is shown. DETAILED DESCRIPTION

[0031] In the prior art, the current submission design and delivered drawing carrier is still mainly two-dimensional drawing, but most of the production design in the industry has implemented three-dimensional design software, so it is necessary to consider the method of driving three-dimensional modeling by two-dimensional drawing to improve the efficiency and accuracy of three-dimensional production design modeling. Because different design elements of different drawings have different design principles, the implementation method of two-dimensional driving three-dimensional is also different, so the application takes the drain plug as the target, realizes the three-dimensional modeling of the drain plug based on the 3DEXP platform through the two-dimensional layout drawing of the drain plug, improves the modeling efficiency, and realizes the uniqueness of the data source, avoiding human errors.

[0032] The embodiments of the present application are described below through specific examples. Those skilled in the art can easily understand other advantages and principles of the present application from the disclosure of the specification. The present application can also be implemented or applied through other different specific embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present application.

[0033] It should be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the specification are only used to understand and read the content disclosed in the specification for those skilled in the art, and do not define the limiting conditions for implementing the present patent, so they do not have technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effect and purpose that can be achieved by the present patent, should still fall within the scope of the technology disclosed by the present patent. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like used in the specification are only for the convenience of clear description, and not to limit the scope of the present patent, and the change or adjustment of the relative relationship without substantially changing the technical content is also considered as the implementation scope of the present patent.

[0034] The present embodiment provides a 3DEXP platform modeling method based on a two-dimensional layout drawing of a drain plug. The two-dimensional layout drawing of the drain plug mainly includes drain plug specifications, corresponding cabin information, drain plug positioning information, and drain plug opening size. There are many types of drain plugs, and they are divided into oil-tight and water-tight. At the same time, the layout feature of the drain plug is to fit the outer plate, so many places with large line curvature on the ship need to be set with drain plugs, which leads to the need for deflection angle of three-dimensional layout of the drain plug to accurately complete the drain plug model layout according to the actual position of the outer plate. If the information combed in the two-dimensional layout drawing can be accurately inherited in the three-dimensional software, it is inevitable to maintain the information of the two-dimensional layout drawing to achieve the effect of unified drawing model, and improve the efficiency and accuracy of model building.

[0035] Therefore, based on the above-mentioned characteristics of the two-dimensional arrangement of the release plug, how to quickly complete the model arrangement of the release plug in the 3DEXP platform is considered. First, the information requirements of the 3DEXP platform for the model arrangement of the release plug are analyzed. The model arrangement first needs to determine the release plug standard and the corresponding model specification. In the 3DEXP, the release plug equipment model library is set according to the release plug standard, which is convenient for calling according to the standard and the model. Second, the release plug positioning information is read from the two-dimensional arrangement drawing. According to the arrangement characteristics of the release plug, the two-dimensional arrangement drawing of the release plug can contain the complete coordinate axis information of the whole ship. Based on this, the XY coordinate values of the release plug can be read out. In the case of determining two coordinate parameters, the vertical lines are established in the 3DEXP platform based on the XY coordinate values of the release plug. The intersection point of the vertical lines and the ship hull model is the height value corresponding to each release plug. Based on the determined XYZ coordinate values, the coordinate axis of each release plug is set. The intersection line of the YZ plane and the XZ plane of this coordinate axis and the outer plate is used as the basis for the inclination of the release plug. After two inclination rotations of the release plug, the model arrangement of the release plug is completed, and the model arrangement of the release plug adhering to the outer plate is realized.

[0036] The following will be described in detail in combination with Figures 1 to 8 The 3DEXP platform modeling method provided in the embodiment is described in detail in steps.

[0037] S100: The model specifications of the release plug are classified, and the CAD adjustable block is edited in the two-dimensional arrangement drawing for the release plug of different specifications and models. The two-dimensional arrangement drawing of the release plug is associated with the specifications and models of the release plug to realize that the CAD adjustable block can call the release plug of different specifications and models.

[0038] Specifically, referring to Figure 2 , first, the type and specification of the release plug are sorted according to the release plug standard. Since the release plugs of the same specifications and models have different differences in installation position plate thickness, they need to be classified according to the plate thickness to sort out the commonly used specifications and models. Then, the CAD adjustable block is edited for each required specification and model of the release plug. Further, the release plugs of the same type can be made into the same dynamic block according to different plate thicknesses and different sealing materials, as shown in Figure 3 . In this way, when a certain type of release plug is needed during the two-dimensional plane arrangement of the release plug, only the dynamic block of this type of release plug needs to be copied, such as AW45-35N, AW45-45N, AW45-52N, AW52-35N, AW52-45N or AW52-52N. Then, the visibility selection is made according to the required specifications and sealing types to complete the arrangement. At the same time, the current visibility state of the dynamic block and the release plug type and specification mark shown in Figure 3 can be read, that is, the two-dimensional arrangement drawing of the release plug is associated with each release plug specification and model in synchronization, laying a foundation for the next step of reading and modeling.

[0039] S200: Count the number of relief valves and cabin information, set the adjustable attribute block of the two-dimensional arrangement number of the relief valve, and set the number and cabin information of the relief valve in the adjustable attribute block of the two-dimensional arrangement number for subsequent information reading.

[0040] Specifically, after the association of the relief valve two-dimensional layout and the model is completed in S100, the difference between the relief valve modeling layout and other fittings is that the cabin name and the plate thickness of the position where each relief valve is located need to be marked. In addition to the relief valve part number, it is also necessary to check whether there is a corresponding cabin name on the corresponding relief valve during on-site installation. Therefore, it is necessary to associate the relief valve model and the cabin information. Further, the above association process is realized by using a CAD adjustable attribute field block. The adjustable attribute field is named relief valve part number, and then the part number or number of the relief valve, the corresponding cabin abbreviation symbol information and the corresponding position plate thickness information are set to form an adjustable attribute field block containing the above information of the relief valve as shown in Figure 4 For example, for the relief valve with part number BP-1, the corresponding cabin abbreviation is SKEG, and the corresponding plate thickness is 60-EH36.

[0041] S300: Perform relief valve two-dimensional layout on the CAD adjustable block and editable attribute block, and set the coordinate axes contained in the ship local cabin background graph where the relief valve is arranged as the whole ship coordinate axis block to read the corresponding XY coordinate axis parameters of each relief valve and generate the relief valve two-dimensional layout graph.

[0042] Specifically, the relief valve adjustable block and the editable attribute block containing the part number information sorted in steps S100 and S200 are used for relief valve two-dimensional layout, and then the positioning information of the relief valve is extracted and associated. Based on the two-dimensional layout characteristics of the relief valve and the three-dimensional model building method, the XY positioning value is extracted and then the Z value and the rotation angle are determined based on the model. Further, as shown in Figure 5 Figure 5 The typical relief valve layout graph is shown in Figure 5 It can be understood that even if the background is a local non-ship display, but by using the block local display function of CAD, the block of the whole ship coordinate system is used in each ship background graph, but only the axis part required by the current layout graph needs to be displayed locally. On this basis, the positioning XY coordinate axis parameters of the current layout relief valve are read based on the plane coordinate axis.

[0043] S400: Based on the relief valve two-dimensional layout graph, read the two-dimensional layout part number, specification and model, and XY coordinate axis parameters of the relief valve, and write them into an information table to obtain an operation workbook.

[0044] Specifically, based on the relief valve arrangement of step S300, the part number, specification, positioning XY value corresponding to each relief valve are read and written into the Excel table. The writing method can be based on program calling Excel template, and the writing program is as follows:

[0045] import xlrd xlwt

[0046] ws = xlrd.open_workbook('workbook name.xls').sheet_by_name('worksheet name')

[0047] nws.write(1, 2, 'information to be written')

[0048] nwb.save('workbook.xls')

[0049] The second line of the program is to open the template Excel and then write information to it. The numbers in the third line are cell row and column information. Here, a loop can be used to write to a specified row or column. Finally, save the workbook as a information table for subsequent operations of the relief valve. The specific positioning Z value and the rotation angle required for each relief valve to fit the outer plate are based on the 3DEXP platform.

[0050] S500: Based on the XY coordinate axis parameters corresponding to the part number of the relief valve, the ship hull and its full ship coordinate axis corresponding to the project in 3DEXP are called, vertical modeling is performed to obtain the Z value of the intersection point of each XY coordinate axis parameter and the ship hull, and the Z value is the height of the relief valve. The Z value is fed back to the information table of the relief valve in S400 to obtain the positioning XYZ value of the relief valve.

[0051] Specifically, based on the coordinate XY coordinate axis parameter value corresponding to each relief valve part number determined in step S500, the relief valve three-dimensional modeling also needs the Z value of the relief valve positioning and its rotation angle in the X axis and Y axis direction. Therefore, in the 3DEXP platform, the ship hull and its full ship coordinate axis corresponding to the project are called, Figure 6 A typical model diagram of the full ship hull is shown, then based on the positioning XY coordinate axis parameter value of each relief valve in step S500, vertical batch modeling is performed, each vertical line has a unique intersection point with the ship hull, and the intersection point height value is the Z value of the relief valve positioning. Then, according to the existing Excel table containing the relief valve specification part number and XY value in the previous step, the positioning value of the corresponding relief valve part number is extracted and written in the 3DEXP platform, thereby obtaining the complete positioning XYZ value of the relief valve.

[0052] S600: Based on the positioning XYZ value of the release plug, coordinate axes are established in the model containing the hull shell and the ship coordinate axes, and the newly established coordinate axes are named as the corresponding release plug part number.

[0053] Specifically, according to the release plug positioning XYZ value read in step S600, coordinate axes are batch-established in the model containing the hull shell and the ship shafting, and each newly established coordinate axis is named as the corresponding release plug part number, so that the coordinate axis assembly of the corresponding model can be performed according to the release plug part number in the later stage. Subsequently, the XZ plane and the YZ plane of each coordinate axis are locally intersected with the hull shell to determine the rotation angle required for the release plug to be arranged based on the plate fitting. Further, since the curvature of the hull shell in some areas is large, the fitting of the release plug is only based on the local area of the plate where the coordinate axis is located, and the intersection line here is also only based on the local range of the origin of each coordinate axis. The XZ plane and the YZ plane of each release plug positioning coordinate axis are intersected with the hull shell intersection line based on a preset distance range of the corresponding coordinate axis origin, and the preset distance is between 20mm and 40mm, for example, 30mm. Subsequently, the corresponding coordinate axis is deflected based on the direction determined by the two points of the end point of the coordinate axis origin and the intersection point of the X axis / Y axis direction, so that the X axis and the Y axis of the coordinate axis are respectively parallel to the XZ plane and the YZ plane and the local intersection line of the plate, to realize the fitting arrangement of the release plug. Similarly, the same operation is performed on the Y axis. Thus, the X axis and the Y axis of the coordinate axis are respectively parallel to the XZ plane and the YZ plane and the local intersection line of the plate, to realize the plate fitting arrangement effect of the release plug.

[0054] S700: Based on the newly established coordinate axis of the release plug, a corresponding model library is set in 3DEXP, the release plug model in 3DEXP is called according to the specification model corresponding to the release plug part number in the table, the coordinate axis is assembled and arranged, and the model arrangement of the release plug is completed.

[0055] Specifically, based on each release plug coordinate axis determined in S500, a corresponding model library is set in 3DEXP according to the release plug standard. As shown in Figure 7 , the release plug model in 3DEXP is called according to the specification corresponding to the release plug part number in the table, and then the coordinate axis determined according to the corresponding release plug part number in the above steps is deflected to perform coordinate axis assembly and arrangement. Referring to Figure 8 , the assembly information input table is formed by extracting the information corresponding to the aforementioned adjusted coordinate axis, including serial number, part number, XYZ coordinate axis parameter, model specification, cabin name, plate thickness and other information. The table is used for assembly import or automatic assembly based on the 3DEXP platform to correspond the release plug part number and the coordinate axis serial number one by one, to complete the release plug model arrangement.

[0056] S800: After the model arrangement of the relief valve is completed, the specifications and positioning information of the relief valve model are reversely data-extracted to form an information table, and the information table is compared with the information table extracted from the two-dimensional plane layout of the relief valve to ensure the accuracy of the specifications and positioning information of the relief valve.

[0057] To sum up, the 3DEXP platform modeling method based on the two-dimensional layout of the relief valve provided in the application applies two-dimensional driving three-dimensional modeling to meet the requirements from detailed design to production design, realize intelligent modeling of components, and through two-dimensional driving three-dimensional modeling, realize the uniqueness of the data source from top to bottom, ensure that the data is unified and unbiased, and greatly improve the work efficiency of the drawing design checkers. Therefore, the application effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0058] The above embodiments only exemplarily illustrate the principles and effects of the application, and are not used to limit the application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed in the application should be covered by the claims of the application.

Claims

1. A 3DEXP platform modeling method based on a two-dimensional layout diagram of a vent plug, characterized in that, At least the following steps are included: S100: Classify the models and specifications of the vent plugs, edit the two-dimensional layout drawing of different models and specifications of vent plugs to form a CAD adjustable block, and associate the two-dimensional layout drawing of the vent plugs with the specifications and models of the vent plugs so that the CAD adjustable block can call up different models and specifications of vent plugs. S200: Collect statistics on the number and compartment information of the vent plug, set an adjustable attribute block for the two-dimensional arrangement part number of the vent plug, and set the number and compartment information of the vent plug in the adjustable attribute block of the two-dimensional arrangement part number for subsequent information reading. S300: Arrange the vent plugs in two dimensions using CAD adjustable blocks and adjustable attribute blocks, and set the coordinate axes contained in the background image of the ship's partial compartments where the vent plugs are arranged as the whole ship coordinate axis blocks, so as to read the corresponding XY coordinate axis parameters for each vent plug and generate a two-dimensional layout diagram of the vent plugs. S400: Based on the two-dimensional layout diagram of the vent plug, read the two-dimensional layout part number, specifications, and XY coordinate axis parameters of the vent plug, and write them into the information table to obtain the operation workbook; S500: Based on the XY coordinate axis parameters corresponding to the two-dimensional arrangement part number of the vent plug, retrieve the hull shell and its entire ship coordinate axis in the corresponding 3DEXP project, perform vertical line modeling to obtain the Z value of the intersection point of each XY coordinate axis parameter and the hull shell. The Z value is the height of the vent plug. Feed the Z value back to the vent plug information table in S400 to obtain the positioning XYZ value of the vent plug. S600: Based on the XYZ values ​​of the vent plug's location, establish coordinate axes in a model that includes the hull shell and the entire ship's coordinate axes, and name the newly established coordinate axes as the corresponding vent plug part numbers; S700: Based on the newly established coordinate axis of the vent plug, set up the corresponding model library in 3DEXP, call the vent plug model in 3DEXP according to the specifications and models corresponding to the vent plug part numbers in the table, perform the assembly and arrangement of the coordinate axis, and complete the model arrangement of the vent plug.

2. The 3DEXP platform modeling method based on the two-dimensional layout diagram of the vent plug according to claim 1, characterized in that, In step S100, during the process of forming the CAD adjustable block, the vent plug is made into the same dynamic block based on different physical parameters. The visibility is selected according to the required specifications to complete the layout. At the same time, the current visibility status of the dynamic block and the specifications of the vent plug are read to associate the two-dimensional layout drawing of the vent plug with the specifications of the vent plug.

3. The 3DEXP platform modeling method based on the two-dimensional layout diagram of the vent plug according to claim 2, characterized in that, The physical parameters are plate thickness and sealing material parameters.

4. The 3DEXP platform modeling method based on the two-dimensional layout diagram of the vent plug according to claim 1, characterized in that, In step S300, the coordinate axes are set to a 1:1 scale with the ship, and the coordinate axes include all the rib points of the ship. The XY coordinate axis parameters of each vent plug are read based on the coordinate axes.

5. The 3DEXP platform modeling method based on the two-dimensional layout diagram of the vent plug according to claim 1, characterized in that, In step S600, the newly established coordinate axes are named according to the corresponding vent plug part numbers. Then, the XZ and YZ planes of each coordinate axis are partially intersected with the hull shell to determine the rotation angle required for the vent plug to be attached to the outer plate.

6. The 3DEXP platform modeling method based on the two-dimensional layout diagram of the vent plug according to claim 5, characterized in that, The XZ and YZ planes of each vent plug positioning coordinate axis are partially intersected with the outer shell of the ship to obtain an intersection line within a preset distance range based on the origin of the corresponding coordinate axis. Then, the corresponding coordinate axis is deflected based on the direction determined by the origin of the coordinate axis and the endpoint of the intersection line, so that the X and Y axes of the coordinate axis are parallel to the XZ plane and the YZ plane and the local intersection line of the outer plate, respectively, to achieve the fit of the vent plug.

7. The 3DEXP platform modeling method based on the two-dimensional layout diagram of the vent plug according to claim 6, characterized in that, The preset distance is between 20mm and 40mm.

8. The 3DEXP platform modeling method based on the two-dimensional layout diagram of the vent plug according to claim 1, characterized in that, Also includes: S800: After completing the model layout of the vent plug, the specifications and positioning information of the vent plug model are extracted in reverse to form an information table, which is then compared with the information table extracted from the two-dimensional plan layout of the vent plug to ensure the accuracy of the vent plug model specifications and positioning information.

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