Method for obtaining tread pattern pitch arrangement diagram based on CATIA and VBA

Abstract

The invention provides a method for obtaining a tread pattern pitch arrangement diagram based on CATIA and VBA, and the method comprises the following steps: S1, drawing each pitch pattern plane diagram based on CATIA, and assigning a positioning reference point; s2, entering a VBA development interaction interface, inputting design information and storing a file address; s3, designing an information checking module in the VBA interactive interface, and checking the input design information; s4, designing and creating a Product module in the VBA interactive interface, and establishing a pitch arrangement initial environment; s5, designing a pattern pitch arrangement module in the VBA interactive interface to realize automatic arrangement of a pitch graph according to a specified sequence; and S6, exporting a DWG format module corresponding to the automatic arrangement pitch diagram obtained in the step S5 in a VBA interactive interface, and outputting a two-dimensional design diagram. The pitch arrangement diagram obtained by the method provided by the invention is accurate in positioning and high in efficiency, and a multi-style pitch arrangement diagram can be quickly provided; the working efficiency of tire pattern pitch research can be improved, and the tire design time and cost are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of tire pattern design, and in particular to a method for obtaining a tire pattern pitch arrangement diagram based on CATIA and VBA. Background Art

[0002] Tire tread pitch refers to the circumferential arrangement of the units that make up the tire tread pattern. Commercial tire tread patterns are generally composed of one or more units, while passenger tire tread patterns are composed of multiple units. In tire tread design, the pattern plan of a single pitch is called a pitch diagram. For example, for tires with S, M, and L pitches, these are called the S-pitch diagram, M-pitch diagram, and L-pitch diagram. Arranging all the tire tread pitch diagrams in a column or row according to a specified arrangement sequence fully reflects the tire's entire circumference pattern layout, creating the tire tread pitch arrangement diagram.

[0003] The tire tread pitch layout diagram allows relevant personnel to more intuitively understand the overall layout of the pattern pitch on the tire. R&D personnel can also directly participate in the design of the tread block's petal position and understand how the mold's petal position affects the cutting of tread information such as the pattern and steel sheet. It can also provide a complete spatial reference for engraving (manual or five-axis engraving) test tires and provide planar input for performance research on tire tread pitch layout. However, existing technical data and literature do not disclose methods for obtaining tire tread pitch layout diagrams, and existing tire companies have not published relevant programs and application methods for automatically arranging tire tread pitch diagrams. The manual pitch layout method currently used by some tire companies or research institutes affects the efficiency of tire pattern research and design.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The present invention aims to address the deficiencies of the above-mentioned technologies. It is developed based on CATIA software and VBA. By associating the various design modules of CATIA software through an interactive interface and various functional modules, it realizes the automatic creation of a pattern pitch arrangement diagram. A method for obtaining a tire pattern pitch arrangement diagram based on CATIA and VBA is provided, thereby improving the work efficiency of tire pattern research and design.

[0006] The technical solutions provided by the present invention are specifically as follows:

[0007] A method for obtaining a tire tread pitch arrangement diagram based on CATIA and VBA, comprising:

[0008] S1. Draw the pattern plan of each pitch based on CATIA and specify the positioning reference point;

[0009] S2. Enter the VBA development interactive interface, enter the design information and save the file address;

[0010] S3. Design an information verification module in the VBA interactive interface to verify the input design information;

[0011] S4. Design and create the Product module in the VBA interactive interface and establish the initial environment for pitch arrangement;

[0012] S5. Design a pattern pitch arrangement module in the VBA interactive interface to automatically arrange the pitch diagram in the specified order;

[0013] S6. Export the DWG format module corresponding to the automatic layout pitch diagram obtained in step S5 in the VBA interactive interface to output a two-dimensional design drawing.

[0014] Furthermore, the method for obtaining the tire tread pitch arrangement diagram further includes:

[0015] After obtaining the automatic arrangement pitch diagram in step S5, it is determined whether the pitch sequence needs to be changed. If so, the automatic arrangement pitch diagram is deleted, the initial design environment is restored, and steps S2-S5 are repeated; if not, step S6 is executed.

[0016] Furthermore, the positioning reference point is set on the pattern center line and is the end point of the longitudinal straight line of the pitch length.

[0017] Furthermore, the design information input in step S2 includes parameters such as tire specifications, tire top diameter, tread pitch length, tread pitch arrangement sequence, and file call and save address.

[0018] Furthermore, the verification of the input design information includes:

[0019] Determine whether the input information in step S2 is correct based on the output design information displayed by the information verification module;

[0020] If the output design information is correct, it proves that the input information in step S2 is correct, and step S4 is directly performed; if the output design information is incorrect, it proves that the input information in step S2 is incorrect, and it is necessary to return to step S2 to correct the input design information.

[0021] Furthermore, the output design information includes: the arrangement order of pitches, the types of pitches in the arrangement, the total number of pitches, the number of each pitch, the diameter circumference of the tire pattern, the pitch circumference and the difference between the two lengths.

[0022] Furthermore, the automatic arrangement of the pitch diagrams in a specified order in step S5 includes:

[0023] According to the pitch length and pitch arrangement sequence input by the interactive interface, the automatic arrangement of the pitch diagram is carried out; wherein the initial environment positioning reference is (0, 0, 0) point, the distance of each positioning point relative to the positioning reference point (0, 0, 0) is calculated according to each pitch positioning point and the pitch arrangement sequence, and the automatic arrangement of the pitch diagram according to the specified sequence is completed.

[0024] Further, the output of the two-dimensional design drawing is realized by calling the engineering drawing module in step S6.

[0025] Compared with the prior art, the method for obtaining the tire pattern pitch arrangement diagram based on CATIA and VBA has the following beneficial effects:

[0026] (1) The method for obtaining the tire pattern pitch arrangement diagram is quickly and automatically established based on the CATIA software and developed by VBA, specifically by inputting the design information of the tire pattern in the VBA interactive interface, checking the design information, and entering the initial environment of the pitch diagram arrangement, inputting the design information (pitch diagram parameter information) according to the interactive window; according to the above input design information, the VBA secondary development is used to realize the automatic arrangement of the pitch diagram according to the specified pitch sequence, and the DWG format two-dimensional drawing is output according to the arranged pitch diagram; the pitch arrangement diagram obtained by the method is accurate in positioning and high in efficiency, and can quickly provide various pitch arrangement diagrams;

[0027] (2) Compared with the traditional manual arrangement method of the pitch arrangement diagram, the method can improve the working efficiency of the tire pattern research and design, and can quickly correct and modify the obtained pitch arrangement diagram when the related staff is not satisfied with the obtained pitch arrangement diagram, thereby saving the tire design time and cost;

[0028] (3) The research and development personnel can directly participate in the design of the parting position of the pattern block in the tire mold according to the arrangement diagram of the tire pattern pitch, and accurately master the cutting situation of the mold parting position on the pattern rib structure and the mold tread elements such as steel sheet; through the optimization design of the parting position of the pattern block, the quality of the tire appearance surface and the overall performance can be improved, and the phenomenon of groove overflow caused by unreasonable cutting position and the phenomenon of blade-shaped pattern rib in the mold can be effectively avoided, thereby prolonging the service life of the mold. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the flow chart of obtaining the tire pattern pitch arrangement diagram in the present application;

[0030] Figure 2 is the schematic diagram of the tire pattern M pitch and the pitch positioning reference point in step S1;

[0031] Figure 3 is the schematic diagram of the interactive interface developed by VBA in step S2;

[0032] Figure 4 is a schematic diagram of a design information checking interface in step S3;

[0033] Figure 5 is a schematic diagram of a pattern pitch automatic arrangement control interface in step S5;

[0034] Figure 6 is a schematic diagram of an output pitch arrangement drawing in step S6;

[0035] Figure 7 is a product application effect diagram of the pitch arrangement drawing in the embodiment of the application. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the application. The following embodiments are used to illustrate the application, but are not used to limit the scope of the application.

[0037] In the description of the application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0038] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0039] In combination with the drawings Figure 1-6 shown, a method for obtaining a tire pattern pitch arrangement drawing based on CATIA and VBA, comprising the following steps:

[0040] S1, drawing each pitch pattern plan based on CATIA, and specifying a positioning reference point;

[0041] S2, entering a VBA development interactive interface, inputting design information and saving a file address;

[0042] S3, designing an information checking module in the VBA interactive interface, checking the input design information;

[0043] S4. Design and create the Product module in the VBA interactive interface and establish the initial environment for pitch arrangement;

[0044] S5. Design a pattern pitch arrangement module in the VBA interactive interface to automatically arrange the pitch diagram in the specified order;

[0045] S6. Export the DWG format module corresponding to the automatic layout pitch diagram obtained in step S5 in the VBA interactive interface to output a two-dimensional design drawing.

[0046] Obviously, in this application, the design information of the tire tread pattern is input into the VBA interactive interface, the design information is verified, and the initial environment for pitch diagram layout is entered. Based on the pitch diagram parameter information input into the interactive interface, VBA secondary development is used to automatically arrange the pitch diagram according to the specified pitch sequence; a two-dimensional DWG format diagram is output based on the arranged pitch diagram. Through the integrated development of CATIA and VBA, the automated design of tire pattern pitch layout is achieved, significantly improving design efficiency and reducing manual layout errors. The pitch layout diagram obtained using this method is accurately positioned and highly efficient. By adjusting the input design information, a variety of pitch layout diagrams can be quickly provided.

[0047] Furthermore, in step S1, various pitch plan views of the tire are designed based on CATIA software, the pitch plan views are completed by generative or sketch design, and pitch positioning reference points are specified.

[0048] Combined with attachment Figure 2 As shown, the positioning reference point is set on the pattern centerline and at the endpoint of the longitudinal line of the pitch length. Setting the positioning reference point at the pattern centerline and the pitch endpoint ensures geometric alignment accuracy during pitch layout. The selection of the longitudinal line endpoint simplifies relative distance calculation and improves the reliability of the automatic layout algorithm.

[0049] Combined with attachment Figure 3 As shown, in step S2, an interactive interface is developed using VBA to implement functions such as inputting design information, saving file addresses, and clearing settings. In the interactive interface, enter tire tread design information, such as tire specifications, tire diameter (OD), tread pitch lengths (S pitch length, M pitch length, L pitch length), pitch arrangement sequence, and the tread pitch file call and save address.

[0050] By inputting various parameter information (such as tire specifications, pitch length, etc.), the completeness of the parameters required for automated arrangement is ensured; the pre-entry of file addresses enables one-click calling and saving, reducing the time cost of manual path operations.

[0051] Furthermore, in step S3, the information verification module in the VBA interactive interface is started to verify the input design information, specifically including:

[0052] Determine whether the input information in step S2 is correct based on the output design information displayed by the information verification module;

[0053] If the output design information is correct, it proves that the input information in step S2 is correct, and step S4 is directly performed; if the output design information is incorrect, it proves that the input information in step S2 is incorrect, and it is necessary to return to step S2 to correct the input design information.

[0054] The information verification module mentioned above verifies the correctness of the input data, thus avoiding design failures caused by parameter errors at the source; and the error feedback mechanism (returning to S2 for correction) forms a closed-loop control, improving the system's fault tolerance and user experience.

[0055] Furthermore, combined with Figure 4 As shown, the output design information includes: pitch arrangement order, pitch types, total number of pitches, number of each pitch (S pitch number, M pitch number, L pitch number), tire tread diameter circumference, pitch circumference, and the difference between the two circumferences. The output design information covers key parameters of the pitch arrangement (such as type, number, circumference difference), helping users quickly verify the rationality of the design. The circumference difference can be used to intuitively determine whether the pattern closure matches the tire circumference, reducing the cost of physical trial and error.

[0056] It should be noted that the diameter circumference of the tire pattern is: tire diameter OD*π, and the pitch circumference is: S*N1+M*N2+L*N3; where S, M, and L are the lengths of each pitch, and N1, N2, and N3 are the numbers corresponding to different types of pitches.

[0057] In step S4, a Product module is created, an assembly environment is created, and an assembly benchmark is created to prepare for the import of the pitch diagram and to create a running environment foundation for step S5.

[0058] In some embodiments of this application, Figure 5 As shown, in step S5, automatically arranging the pitch diagram in a specified order includes:

[0059] The pitch diagram is automatically arranged according to the pitch length and pitch arrangement order entered in the interactive interface; the initial environment positioning reference is the (0,0,0) point, and the distance of each positioning point relative to the positioning reference point (0,0,0) is calculated in sequence according to each pitch positioning point and the pitch arrangement order, and the pitch diagram is automatically arranged in the specified order.

[0060] During the automatic layout of pitch diagrams, the relative distance calculation based on the reference point (0,0,0) is used to achieve precise positioning and layout of pitches. The algorithm is simple and efficient. The automated layout logic is directly bound to the pitch sequence input by the user to ensure the accurate execution of design intent.

[0061] In some embodiments of the present application, the method for obtaining a tire tread pitch arrangement diagram further includes:

[0062] After obtaining the automatic arrangement pitch diagram in step S5, it is determined whether the pitch sequence needs to be changed. If so, the automatic arrangement pitch diagram is deleted, the initial design environment is restored, and steps S2-S5 are repeated; if not, step S6 is executed.

[0063] Specifically, a pitch arrangement deletion module is designed in the interactive interface. When the pitch arrangement sequence does not meet the requirements or the pitch arrangement sequence is wrong and the pitch sequence needs to be changed, the pitch diagram can be deleted with one click and the initial design environment can be restored, and the tire pattern pitch arrangement diagram can be redesigned and obtained.

[0064] A judgment mechanism for whether the pitch sequence needs to be changed is added between the above steps S5 and S6 to support iterative optimization of the design and avoid repetitive manual operations caused by sequence adjustment. At the same time, by deleting and restoring the process of the initial environment, the standardization of design modifications is ensured to prevent data redundancy or error accumulation.

[0065] Combined with attachment Figure 6 As shown, in step S6, the 2D design drawing is output by calling the engineering drawing module. By directly calling the CATIA engineering drawing module to output DWG drawings, the original design accuracy is retained without the need for secondary conversion. The standardized output format facilitates seamless collaboration with other departments (such as manufacturing and quality inspection), improving the efficiency of industry chain collaboration.

[0066] Combined with attachment Figure 7 The product application effect diagram shown is the pitch arrangement diagram, and the tire pattern pitch arrangement type is S / M / L type.

[0067] The method proposed in this application combines the powerful modeling capabilities of CATIA and the automated processing capabilities of VBA scripts, which not only improves the work efficiency of relevant staff but also ensures the design quality. It has significant application value in the field of tire pattern design.

[0068] Compared with the prior art, the above embodiments of the present invention have the following beneficial technical effects:

[0069] (1) The application is based on CATIA software and developed by VBA, and a method for quickly and automatically establishing a tire pattern pitch arrangement diagram is provided, specifically, by inputting the design information of the tire pattern in the VBA interactive interface, the design information is checked, and the initial environment of the pitch diagram arrangement is entered, according to the design information (pitch diagram parameter information) input by the interactive interface, VBA secondary development is used to realize automatic arrangement of the pitch diagram according to the specified pitch sequence, and a two-dimensional DWG format diagram is output according to the arranged pitch diagram; the pitch arrangement diagram obtained by the method is accurate in positioning and high in efficiency, and can quickly provide various pitch arrangement diagrams;

[0070] (2) Compared with the traditional manual pitch arrangement diagram arrangement method, the method provided by the application can improve the work efficiency of tire pattern research and design, and in the case that the obtained pitch arrangement diagram is not satisfactory to the relevant staff, the correction and modification can be quickly carried out, the tire design time and cost are saved, and the design quality of the tire pattern and the performance of the tire are improved.

[0071] (3) The research and development personnel can directly participate in the design of the parting position of the pattern block in the tire mold according to the pitch arrangement diagram of the tire pattern, and accurately master the cutting condition of the mold parting position on the pattern rib structure and the steel sheet and other mold tread elements; through the optimization design of the parting position of the pattern block, the appearance surface quality and overall performance of the tire are improved, and the phenomenon of groove overflow caused by unreasonable cutting position and the phenomenon of blade-shaped pattern rib in the mold are effectively avoided, thereby prolonging the service life of the mold.

[0072] The above is only a preferred embodiment of the application, and is not intended to limit the application in any form, although the application has been disclosed as above with a preferred embodiment, however, it is not intended to limit the application, any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the application, and equivalent embodiments with equivalent changes are equivalent embodiments with equivalent changes, the implementation schemes in the above-mentioned embodiments can be further combined or replaced, as long as they do not deviate from the technical solution of the application, any simple modification, equivalent change and modification of the above-mentioned embodiments according to the technical essence of the application are still within the scope of the application.

Claims

1. A method for obtaining tire tread pattern pitch arrangement diagram based on CATIA and VBA, characterized in that: include: S1. Draw the pattern plan of each pitch based on CATIA and specify the positioning reference point; S2. Enter the VBA development interactive interface, enter the design information and save the file address; S3. Designing an information verification module in the VBA interactive interface to verify the input design information; S4. Design and create a Product module in the VBA interactive interface to establish an initial environment for pitch arrangement; S5. Designing a pattern pitch arrangement module in the VBA interactive interface to automatically arrange the pitch diagrams in a specified order; S6. Exporting the DWG format module corresponding to the automatic layout pitch diagram obtained in step S5 in the VBA interactive interface to output a two-dimensional design drawing.

2. The method for obtaining a tire tread pattern pitch arrangement diagram based on CATIA and VBA according to claim 1, characterized in that: Also includes: After obtaining the automatic arrangement pitch diagram in step S5, it is determined whether the pitch sequence needs to be changed. If so, the automatic arrangement pitch diagram is deleted, the initial design environment is restored, and steps S2-S5 are repeated; if not, step S6 is executed.

3. The method for obtaining a tire tread pattern pitch arrangement diagram based on CATIA and VBA according to claim 1, characterized in that: The positioning reference point is set on the pattern center line and is the end point of the longitudinal straight line of the pitch length.

4. The method for obtaining a tire tread pattern pitch arrangement diagram based on CATIA and VBA according to claim 3, characterized in that: The design information input in step S2 includes: tire specifications, tire top diameter, tread pitch length, tread pitch arrangement sequence parameters, and file call and save address.

5. The method for obtaining a tire tread pattern pitch arrangement diagram based on CATIA and VBA according to claim 4, characterized in that: Verification of input design information includes: Determine whether the input information in step S2 is correct or not based on the output design information displayed by the information verification module; If the output design information is correct, it proves that the input information in step S2 is correct, and step S4 is directly performed; if the output design information is incorrect, it proves that the input information in step S2 is incorrect, and it is necessary to return to step S2 to correct the input design information.

6. The method for obtaining a tire tread pattern pitch arrangement diagram based on CATIA and VBA according to claim 5, characterized in that: The output design information includes: pitch arrangement order, types of pitch arrangement, total number of pitches, number of each pitch, diameter circumference of tire pattern, pitch circumference and difference between two pitches.

7. The method for obtaining a tire tread pattern pitch arrangement diagram based on CATIA and VBA according to any one of claims 1 to 6, characterized in that: Automatically arranging the pitch diagrams in a specified order in step S5 includes: The pitch diagram is automatically arranged according to the pitch length and pitch arrangement order input in the interactive interface; the initial environment positioning reference is the (0,0,0) point, and the distance of each positioning point relative to the positioning reference point (0,0,0) is calculated in sequence according to each pitch positioning point and the pitch arrangement order, and the pitch diagram is automatically arranged in the specified order.

8. The method for obtaining a tire tread pattern pitch arrangement diagram based on CATIA and VBA according to claim 7, characterized in that: In step S6, the output of the two-dimensional design drawing is achieved by calling the engineering drawing module.

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