CN113468660A - Method for creating tire material distribution map, intelligent device and computer-readable carrier medium - Google Patents
Method for creating tire material distribution map, intelligent device and computer-readable carrier medium Download PDFInfo
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- CN113468660A CN113468660A CN202110709319.1A CN202110709319A CN113468660A CN 113468660 A CN113468660 A CN 113468660A CN 202110709319 A CN202110709319 A CN 202110709319A CN 113468660 A CN113468660 A CN 113468660A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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Abstract
The invention relates to the technical field of tire computer aided design, in particular to a tire material distribution diagram creation method, intelligent equipment and a computer readable carrier medium. A method for creating distribution map of tyre material features that the modular drawing mode is used, that is, the concrete functions (curve calculation, etc.) are first packaged into templates to form template database. When drawing the material distribution diagram, the material distribution diagram is selected from the database according to the requirement, and then all the templates are spliced together to form the complete material distribution diagram. The method can effectively improve the precision of material distribution diagram design, simultaneously improve the drawing efficiency, and is used for tire structure design.
Description
Technical Field
The invention relates to the technical field of tire computer aided design, in particular to a tire material distribution diagram creation method, intelligent equipment and a computer readable carrier medium.
Background
The design of the tire is of great importance since it is the only component of the vehicle that comes into contact with the road surface and directly affects the safety of the vehicle's driver and passengers. One of the important expression ways to embody the tire structure design result is the material distribution map, which is the basis for finite element analysis and construction design.
The tire as a composite material product comprises a plurality of materials such as steel wires, fibers, rubber and the like, and the formula, the structure, the distribution position, the form and the like of the corresponding materials have various changes according to different performance requirements of each part in use, for example, the rolled materials are designed to have different thicknesses and the like on different positions, and the information has great influence on the accuracy of subsequent finite element analysis and construction design.
Under a conventional drawing mode, data such as materials used by tires are collected generally in a form of files and documents such as tables, and information such as thickness and angle is manually recorded in the tables after a database is consulted for subsequent calculation. There are generally two ways to draw: one is achieved by a simplified mode (such as constant thickness in one area), and the material distribution diagram obtained in the mode has high efficiency and high speed, but the design drawing is inconsistent with the actually produced tire due to the fact that the difference of stretching of different radii of the material is not considered, and therefore the accuracy of subsequent construction design is reduced. In another approach, accuracy is relatively improved, and the approximation is performed by taking a typical point calculation. The method improves the design precision at the position of a typical point, but if the drawing precision is required to be improved, the number of the points to be taken is increased by orders of magnitude, and the steps of drawing a material distribution diagram are various, so that the method is time-consuming and labor-consuming. And once the data needs to be modified, the data obtained by manual calculation and manual drawing needs to be backed down and recalculated, and the workload is very huge. Therefore, the material distribution map drawn by the two methods has obvious limitations and defects, the material distribution map cannot be drawn efficiently and accurately on the basis of ensuring the authenticity of material data, and the material distribution map needs to be drawn again once the material distribution map is changed subsequently.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a method for creating a tire material distribution diagram, which adopts a modular mode to perform drawing work, namely, specific functions (such as curve calculation and the like) are packaged into templates to form a template database. When drawing the material distribution diagram, the material distribution diagram is selected from the database according to the requirement, and then all the templates are spliced together to form the complete material distribution diagram. The method can effectively improve the precision of material distribution diagram design, simultaneously improve the drawing efficiency, and is used for tire structure design.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of creating a tyre material profile, the method comprising the steps of:
step 1, selecting a corresponding template according to a required material distribution diagram configuration, filling in a material type and a number to be used, and completing the parameter definition work of the material distribution diagram;
step 2, importing a contour: automatically importing curves, points and parameters comprising contour curves and parting surfaces from a specified contour map;
step 3, creating a material: establishing material characteristics of materials required by the material distribution diagram for storing information such as material density and the like so as to be quoted in a subsequent drawing process;
step 4, preprocessing a contour curve: the material distribution map is positioned and drawn based on the profile curve, so that the profile curve needs to be correspondingly preprocessed, and reference points, reference lines and reference surfaces which are used subsequently are prepared; if the tire heel is used as a base point to position the tail end of the reverse wrapping of the cord fabric, the tire heel point needs to be manufactured in advance;
step 5, drawing a base line: based on a company design theory, importing a balanced inner contour curve, and forming an initial drawing base line by combining a steel wire ring to serve as a basis for importing subsequent components; drawing a baseline characteristic that the baseline characteristic starts from the tire symmetry axis, circles the steel wire ring along the anticlockwise direction and finally returns to the tire symmetry axis; gradually drawing each part outwards by taking the drawing base line as a center;
step 6, importing components:
1) positioning each end point of a part to be drawn subsequently through the existing drawing base line, the reference point, the reference line and the corresponding parameters;
2) inserting corresponding parts according to the existing positioning and designated parameters, determining the head and tail shapes and the main body outline of the parts, and obtaining the corresponding sectional area, volume and quality information of the parts;
3) combining the outer contour of the part with the baseline before the part is led in, and then outputting to form a new drawn baseline; simultaneously outputting auxiliary points and lines of each end point and the internal curve of the part;
4) according to the actual situation, adjusting corresponding parameters to enable the newly generated component to meet the requirements;
repeatedly circulating 1) -4) until all parts are imported and drawn;
and 7, summarizing: further calculating required information comprising the mass of the tire and the length of the inner contour curve from the output results of all the components; and completing the drawing of the material distribution map.
As a further improvement, said step 3 links the established material characteristics with a material database (such as the material database in PLM), ensuring that the parameters of the material are consistent with the data in the current database each time the material distribution map is drawn.
As a further improvement, in step 4, if the tread pattern volume needs to be calculated (for construction design, quality calculation, and the like), the pattern volume curve needs to be imported, and corresponding processing is performed.
As a further improvement, if measuring the groove depth requires taking into account the thermal shrinkage of the tread rubber (for construction design, profile analysis, etc.), the crown curve needs to be processed accordingly in step 4.
As a further improvement, the step 7 further includes performing a summary output of the profile analysis.
As a further improvement, said step 7 further comprises performing belt, carcass and bead strength checks.
Further, the invention also discloses that the method is used for tire structure design.
Further, the invention also discloses a tire designed by the method.
Furthermore, the invention also discloses an intelligent device, which comprises a processor, a memory and a computer program stored on the memory and capable of running on the processor, wherein the computer program realizes the steps of the method when being executed by the processor.
Further, the present invention also discloses a non-transitory computer readable carrier medium storing program instructions, characterized in that the computer readable storage medium stores thereon a computer program which, when executed by a processor, implements the steps of the method.
The invention adopts the technical scheme that the method creates a solution of a parameterized material distribution map in a CATIA software environment, and realizes a semi-automatic design method of the material distribution map by creating a material template database and CAA secondary development, and the specific implementation mode is that the whole material distribution map design is divided into six modules (shown in figure 1) such as defined parameters, material import, contour curve preprocessing, baseline drawing, component import, material distribution summarization and the like; in the module of component import, the import and drawing of each component can be divided into 3 types of small modules (see fig. 2) such as positioning, drawing, outputting and the like; and (4) combining CAA programming, sequentially calling material templates according to a predefined parameter file, and realizing automatic drawing. In the process, the material data is integrally read by a material database (such as a PLM system), and the data is updated in real time; the automatic selection and position calculation of typical points of the design drawing are carried out by a program, the point-taking density can be flexibly adjusted according to actual needs, and the drawing precision of the material distribution diagram is greatly improved; when the design data is changed, the drawing can be automatically updated through the CATIA software parameter driving function.
The method can effectively improve the precision of material distribution diagram design and improve the drawing efficiency, and is used for tire structure design.
Drawings
FIG. 1 is a flow chart of material distribution map rendering;
FIG. 2 is a block diagram;
FIG. 3 parameter definition example;
FIG. 4 is a balanced inner profile curve;
FIG. 5 plots a baseline example;
fig. 6 shows an example of a material distribution diagram.
Detailed Description
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
As shown in fig. 1, a method for creating a tire material distribution map includes the steps of:
step 1: according to the required material distribution diagram configuration, selecting a corresponding parameter template, opening an editor, filling out the type and the number of the material to be used, and storing key parameters required for generating the material distribution diagram (as shown in figure 3).
Step 2: and starting a material distribution diagram generation program in the CATIA, sequentially selecting a parameter file and a contour diagram, pressing a confirm key, and starting drawing the material distribution diagram.
1. Leading-in the profile: curves, points, parameters, and the like such as contour curves and parting surfaces are automatically imported from a designated contour map.
2. Creating a material: and establishing material characteristics according to the material information in the parameter file, establishing association with the PLM database, and acquiring corresponding information such as material parameters and the like.
3. Preprocessing a contour curve: the contour curve is correspondingly preprocessed, and reference points, reference lines, reference surfaces and the like which are needed to be used subsequently are prepared. If desired, a pattern volume curve can be introduced and a corresponding heat-shrinking treatment can be carried out with the crown curve. If the tail end of the cord fabric turn-up is positioned by taking the bead heel as a base point, the bead heel point needs to be made in advance.
4. Drawing a base line: drawing a base line: based on company design theory, the balanced inner profile curve (see fig. 4) was imported and combined with the wire-loop to form an initial drawn baseline as the basis for subsequent part importation. The baseline is plotted as starting from the tire axis of symmetry, going in a counterclockwise direction, around the bead ring, and finally back to the tire axis of symmetry (see fig. 5). And drawing each part outwards step by taking the drawing base line as a center.
5. Introducing components:
5.1, positioning each end point of the part to be drawn subsequently according to the existing drawing base line, the reference point, the reference line and the corresponding parameters;
5.2 inserting corresponding component templates according to the existing positioning and designated parameters, determining the head and tail shapes and the main body outline of the component templates, and obtaining the corresponding information of the sectional area, the volume, the mass and the like;
5.3, combining the outer contour of the part with the front drawing base line and outputting to form a new drawing base line; and simultaneously outputting auxiliary points and lines such as each end point, an internal curve (such as a cord fabric layer central line) and the like of the component.
And 5.4, adjusting corresponding parameters according to the actual situation to enable the newly generated component to meet the requirements.
And repeatedly cycling from 5.1) to 5.4) until all parts are drawn.
6. Summarizing: required other information such as tire mass, inner contour curve length and the like are further calculated from the output results of all the components. If necessary, the output of the cross-section analysis can be summarized and the belt, carcass and bead ring strength can be checked.
And step 3: if necessary, the parameter values in the above steps can be adjusted to make the material distribution diagram meet the design requirement.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including any reference to the above-mentioned embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of creating a profile for a tyre material, the method comprising the steps of:
step 1, selecting a corresponding template according to a required material distribution diagram configuration, filling in a material type and a number to be used, and completing the parameter definition work of the material distribution diagram;
step 2, importing a contour: automatically importing curves, points and parameters comprising contour curves and parting surfaces from a specified contour map;
step 3, creating a material: establishing material characteristics of materials required by the material distribution diagram for storing information such as material density and the like so as to be quoted in a subsequent drawing process;
step 4, preprocessing a contour curve: the material distribution map is positioned and drawn based on the profile curve, so that the profile curve needs to be correspondingly preprocessed, and reference points, reference lines and reference surfaces which are used subsequently are prepared;
step 5, drawing a base line: based on a company design theory, importing a balanced inner contour curve, and forming an initial drawing base line by combining a steel wire ring to serve as a basis for importing subsequent components; drawing a baseline characteristic that the baseline characteristic starts from the tire symmetry axis, circles the steel wire ring along the anticlockwise direction and finally returns to the tire symmetry axis; gradually drawing each part outwards by taking the drawing base line as a center;
step 6, importing components:
1) positioning each end point of a part to be drawn subsequently through the existing drawing base line, the reference point, the reference line and the corresponding parameters;
2) inserting corresponding parts according to the existing positioning and designated parameters, determining the head and tail shapes and the main body outline of the parts, and obtaining the corresponding sectional area, volume and quality information of the parts;
3) combining the outer contour of the part with the baseline before the part is led in, and then outputting to form a new drawn baseline; simultaneously outputting auxiliary points and lines of each end point and the internal curve of the part;
4) according to the actual situation, adjusting corresponding parameters to enable the newly generated component to meet the requirements;
repeatedly circulating 1) -4) until all parts are imported and drawn;
and 7, summarizing: further calculating required information comprising the mass of the tire and the length of the inner contour curve from the output results of all the components; and completing the drawing of the material distribution map.
2. A method for creating a tyre material distribution map according to claim 1, wherein step 3 connects the established material characteristics with a database of materials, ensuring that the parameters of the materials are consistent with the data in the current database each time the material distribution map is drawn.
3. A method for creating a tire material profile as claimed in claim 1, wherein step 4 comprises calculating the crown pattern volume, introducing the pattern volume curve, and performing corresponding processing.
4. A method for building a tyre material profile according to claim 1, wherein step 4 requires a corresponding treatment of the crown curve if measuring the groove depth requires the thermal shrinkage of the tread band to be taken into account.
5. A method for creating a tire material profile as in claim 1, wherein step 7 further comprises performing a summary output of the profile analysis.
6. A method for creating a tire material profile as in claim 1, wherein step 7 further comprises performing belt, carcass and bead strength checks.
7. Use of the method according to any of claims 1 to 6 for the structural design of a tyre.
8. A tire designed by the method of any one of claims 1 to 6.
9. An intelligent device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the method of any one of claims 1 to 6.
10. A non-transitory computer-readable carrier medium storing program instructions, wherein the computer-readable storage medium stores thereon a computer program which, when executed by a processor, implements the steps of the method of any one of claims 1-6.
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| CN202110709319.1A CN113468660B (en) | 2021-06-25 | 2021-06-25 | Tire material distribution map creation method, intelligent device and computer readable carrier medium |
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| CN202110709319.1A CN113468660B (en) | 2021-06-25 | 2021-06-25 | Tire material distribution map creation method, intelligent device and computer readable carrier medium |
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Cited By (1)
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| CN115027170A (en) * | 2022-07-25 | 2022-09-09 | 青岛轮云设计研究院有限责任公司 | Drawing method of semi-steel tire material distribution map |
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Cited By (2)
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