Tire steel cord model modeling system based on CATIA

Abstract

The invention discloses a tire steel cord model modeling system based on CATIA, relates to the technical field of tire design, is applied to CATIA, and comprises a tire steel cord model modeling method based on CATIA, and the modeling method comprises the following steps: formulating basic parameters of steel cord modeling and calculating key parameters; standardized modeling operation of the steel cord is carried out based on CATIA; and carrying out secondary development on modeling automation. According to the CATIA-based tire steel cord model modeling system, basic parameters and key parameters are determined by adopting a mathematical method, the accuracy of steel cord modeling is ensured, diversified steel cord design requirements are met by carrying out standardized modeling operation on steel cords of different structures, secondary development can be carried out based on CATIA, and the development efficiency is improved. Automatic operation of steel cord modeling is achieved, the design work efficiency is effectively improved, operation is easy, and practicability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of tire design, and specifically to a modeling system for tire steel cord models based on CATIA. Background Art

[0002] CATIA is an important part of the PLM collaborative solution. It can help manufacturers design their future products through modeling and support the entire industrial design process from the pre-project stage, specific design, analysis, simulation, assembly to maintenance.

[0003] Currently, many tire companies have started to apply CATIA to tires. In current tire design work, the performance design and testing of steel cords are all carried out with the overall cord fabric as the research object. However, for the process of forming cords by twisting steel wires and forming cord fabrics by calendering cord structures, the influence of different structural designs on their final performance has not been deeply studied, and there is currently no modeling software that can perform rapid and accurate automated modeling of tire cord structures.

[0004] Based on this, a modeling system for tire steel cord models based on CATIA is now provided, which can eliminate the drawbacks of existing technical solutions. Summary of the Invention

[0005] The purpose of the present invention is to provide a modeling system for tire steel cord models based on CATIA to solve the problem that there is currently no modeling software that can perform rapid and accurate automated modeling of tire cord structures in the background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A modeling system for tire steel cord models based on CATIA, applied in CATIA, includes a modeling method for tire steel cord models based on CATIA. The modeling method includes:

[0008] Formulating the basic parameters for steel cord modeling and calculating the key parameters;

[0009] Performing standardized modeling operations for steel cords based on CATIA;

[0010] Performing secondary development on the modeling automation.

[0011] Preferably, the basic parameters for formulating the steel cord modeling and the key calculation parameters include defining the basic parameters and the key parameters. The basic parameters include the lay length, the single wire diameter, and the radius. The lay length is set as L, the single wire diameter is set as d, the radius is set as r, the winding mode of the steel cord is set as Z-type winding and S-type winding. The key parameters include the winding angle of the steel wire, the winding radius, and the number of winding turns. The winding angle of the steel wire is set as K, the winding radius of the steel wire is set as R, the number of winding turns of the steel wire is set as n, the major axis of the axial section of the steel cord is set as a, and the minor axis of the axial section of the steel cord is set as b.

[0012] Preferably, the basic parameters for formulating the steel cord modeling and the key calculation parameters include performing analytic geometry analysis on the winding radius of the steel wire:

[0013]

[0014] The winding radius R of the steel wire is defined according to the above formula to ensure that the steel wires between the steel wire winding models are in contact with each other but without interference.

[0015] Preferably, the standardized modeling operation of the steel cord based on CATIA includes the following steps:

[0016] Obtain the single wire model of the steel cord through plane sweeping;

[0017] Sweep the single wire model of the steel cord through the central helix;

[0018] Adjust the contact surface accuracy of the steel wire cord model.

[0019] Preferably, obtaining the single wire model of the steel cord through plane sweeping includes confirming the single wire central axis of the single wire model under the composite winding structure, performing a sweeping operation based on the single wire normal circle, setting the sweeping angle as linear sweeping, and setting the upper and lower extreme values as the number of twists * 360deg and 0.

[0020] Preferably, sweeping the single wire model of the steel cord through the central helix includes confirming the inner diameter of the helical single wire of the single wire model under the simple structure and performing a sweeping operation based on the center of the starting plane of the helix to create the single wire model.

[0021] Preferably, adjusting the contact surface accuracy of the steel wire cord model includes adding the accuracy parameters of the steel cord model under the multi-layer winding structure and verifying the accuracy range through experiments.

[0022] Preferably, the secondary development of the modeling automation includes:

[0023] Establish a steel wire model;

[0024] Establish a steel wire center line model;

[0025] Establish a laminate model;

[0026] The steel wire model will be further developed in combination with software, and parametric drive design parameters will be selected to modify the model. The CATIA is internally set with a super copy function to realize the parametric and automated drawing of the steel wire model.

[0027] Preferably, the steel wire center line model is obtained by replacing the overall steel wire model with the steel wire center line and adding an automatic center line modeling function.

[0028] Preferably, a cord fabric layer is formed between the steel cord wires, and the laminate model is used for performance analysis and cord fabric layer modeling operation of the cord fabric layer.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] This tire steel cord model modeling system based on CATIA uses mathematical methods to determine the basic parameters and key parameters to ensure the accuracy of steel cord modeling. By performing standardized modeling operations on steel cords with different structures, it can meet the diverse design requirements of steel cords. Moreover, the present invention can be further developed based on CATIA to realize the automated operation of steel cord modeling, effectively improving the design work efficiency, with simple operation and good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic flow chart of the present invention.

[0032] Figure 2 It is an example diagram of the change in the axial sectional style of the steel cord of the present invention.

[0033] Figure 3 It is an example diagram of obtaining the steel cord single wire model by plane sweeping of the present invention.

[0034] Figure 4 It is an example diagram of sweeping the steel cord single wire model by the central spiral line of the present invention.

[0035] Figure 5 It is an example diagram of the establishment of the steel wire model of the present invention.

[0036] Figure 6 It is an example diagram of the multi-structure of the steel wire model of the present invention.

[0037] Figure 7 It is an example diagram of the establishment of the steel wire center line model of the present invention.

[0038] Figure 8 It is an example diagram of the establishment of the cord fabric layer of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] In this embodiment, if Figures 1-8 As shown, a tire steel cord modeling system based on CATIA is applied in CATIA. CATIA is the de facto standard of the automotive industry and the core system used by top automobile manufacturers in Europe, North America and Asia. It provides an end-to-end solution for the design and manufacture of various vehicles, thereby improving product performance, including a tire steel cord modeling method based on CATIA, and the modeling method includes:

[0041] Formulate basic parameters for steel cord modeling and calculate key parameters;

[0042] Standardized modeling of steel cord based on CATIA;

[0043] Secondary development of modeling automation is carried out. Before the CATIA-based tire steel cord modeling system is used, the parameters are first formulated to put the system into a ready-to-use state, which is convenient for filling the gap in tire steel cord modeling functions, realizing the standardization and automation of steel cord model creation, and then supporting the performance research of steel cord monofilaments.

[0044] Among them Figure 1 and Figure 2 As shown, the formulation of basic parameters for steel cord modeling and key calculation parameters includes defining basic parameters and key parameters. The basic parameters of steel cord are clearly defined in the tire industry. The definition of parameters in the tire steel cord modeling system based on CATIA directly quotes the internal definition of the tire industry, thereby having good adaptability. The basic parameters include twist pitch, monofilament diameter and radius. The twist pitch is set to L, the monofilament diameter is set to d, the radius is set to r, and the winding mode of the steel cord is set to z-type winding and s-type winding. In addition to the above basic parameters, some key parameters defined in the process need to be applied during the modeling process. These parameters are defined. The key parameters include the winding angle, winding radius and winding number of the steel wire. The steel wire winding angle is set to K, the steel wire winding radius is set to R, the steel wire winding number is set to n, the axial section major axis of the steel cord is set to a, and the axial section minor axis of the steel cord is set to b. After defining the required parameters, the parameters are entered into the system to facilitate storing the parameters in the system database for subsequent calculation operations.

[0045] Among them Figure 1 and Figure 2 As shown, the formulation of basic parameters for steel cord modeling and calculation of key parameters includes analytic geometric analysis of the steel wire winding radius:

[0046]

[0047] Define the wire winding radius R according to the above formula to ensure that the wires between the wire winding models are in contact with each other without interference, avoiding affecting the normal operation of the system.

[0048] Among them, as Figure 3 , Figure 4 and Figure 6 shown, the standardized modeling operation of steel cord based on CATIA includes the following steps:

[0049] Obtain the steel cord single wire model through plane sweeping;

[0050] Sweep the steel cord single wire model through the central helix;

[0051] Adjust the contact surface accuracy of the steel wire cord model. Through the standardized operation of modeling different structural steel cords, it can meet the diverse design requirements of steel cords.

[0052] Among them, as Figure 3 and Figure 6 shown, the method of obtaining the steel cord single wire model through plane sweeping includes confirming the central axis of the single wire of the single wire model under the composite winding structure, performing a sweeping operation based on the normal circle of the single wire, setting the sweeping angle as a linear sweep, and setting the upper and lower extreme values as the number of twists * 360deg and 0. This method is mainly applied to the single wire model under the composite winding structure. First, select a suitable profile type, then set the reference surface and guiding curve, and perform a sweeping operation based on the plane to obtain the steel cord single wire model.

[0053] Among them, as Figure 4 and Figure 6 shown, the method of sweeping the steel cord single wire model through the central helix includes confirming the inner diameter of the helical single wire of the single wire model under the simple structure, performing a sweeping operation based on the center of the circle of the starting plane of the helix, and is used to create the single wire model. This method is applied to the single wire model under the simple winding structure. First, select a suitable profile type, then set the reference center and radius, perform a sweeping operation based on the helix, select a suitable radius parameter, and then obtain the steel cord single wire model.

[0054] Among them, as Figure 3 , Figure 4 and Figure 6As shown, the adjustment of the contact surface accuracy of the steel cord model includes adding the accuracy parameters of the steel cord model under the multi-layer winding structure and verifying the accuracy range through experiments. Under structures such as multi-layer winding, the model of the steel cord is usually extremely complex. Due to the small diameter of the single wire and the high accuracy requirements, problems such as steel wire interference often occur when the model is imported into the FEA software. Adjusting the contact surface accuracy of the steel cord model can avoid the occurrence of interference problems.

[0055] Among them, as Figures 5-8 shown, the secondary development of the modeling automation includes:

[0056] Establish a steel wire model;

[0057] Establish a steel wire center line model;

[0058] Establish a laminate model. Based on the secondary development of CATIA, the automation of steel cord modeling can be realized, effectively improving the design work efficiency. The above-mentioned automated modeling work can realize the function development operations under various structures, such as simple winding structure, single spiral winding structure, open winding structure, multi-layer winding structure, composite winding structure, compact winding structure, etc.;

[0059] The steel wire model will be combined with the software for secondary development, and the model will be modified by selecting parametric drive design parameters. The internal setting of CATIA has a super copy function, which is used to realize the parametric and automated drawing of the steel wire model. Select appropriate basic parameters for the parametric modeling operation of the steel wire model. For example, set the single wire diameter d to 0.28 mm, the pitch L to 14 mm, the modeling length to 30 mm, the accuracy to 1e-004 mm, the accuracy adjustment to 0, etc., and the automatic modeling operation of the steel wire model can be realized.

[0060] Among them, as Figure 6 and Figure 7 shown, the steel wire center line model replaces the overall steel wire model with the steel wire center line, adds the center line automatic modeling function, selects appropriate basic parameters, and performs the parametric modeling operation of the steel wire center line. For example, set the pitch L to 14 mm, the single wire diameter d to 0.28 mm, the modeling length to 30 mm, the accuracy to 1e-004 mm, the accuracy adjustment to 0, and the activity to true, and the automatic modeling operation of the center line can be realized.

[0061] Among them, as Figure 8 shown, a ply layer is formed between the steel cords. The laminate model is used for performance analysis and modeling operation of the ply layer, which is convenient for the application of CATIA and increases the overall practicality of the system.

[0062] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A tire steel cord modeling system based on CATIA, characterized in that: A tire steel cord modeling method based on CATIA is provided, wherein the modeling method comprises: Formulate basic parameters for steel cord modeling and calculate key parameters; Standardized modeling of steel cord based on CATIA; Carry out secondary development of modeling automation.

2. The tire steel cord modeling system based on CATIA according to claim 1, characterized in that: The method for formulating basic parameters for steel cord modeling and calculating key parameters includes defining basic parameters and key parameters, wherein the basic parameters include lay pitch, single wire diameter and radius, wherein the lay pitch is set to L, the single wire diameter is set to d, the radius is set to r, the winding mode of the steel cord is set to z-type winding and s-type winding, and the key parameters include the winding angle, winding radius and number of windings of the steel wire, wherein the steel wire winding angle is set to K, the steel wire winding radius is set to R, the number of windings of the steel wire is set to n, the major axis of the axial section of the steel cord is set to a, and the minor axis of the axial section of the steel cord is set to b.

3. The tire steel cord modeling system based on CATIA according to claim 2, characterized in that: The formulation of basic parameters for steel cord modeling and calculation of key parameters includes analytical geometric analysis of the steel wire winding radius: The wire winding radius R is defined according to the above formula to ensure that the wires between the wire winding models are in contact with each other but without interference.

4. The tire steel cord modeling system based on CATIA according to claim 1, characterized in that: The standardized modeling operation of the steel cord based on CATIA includes the following steps: Obtain the steel cord single filament model by plane sweeping; A steel cord monofilament model is swept through a central helix; Adjust the contact surface accuracy of the steel cord model.

5. The tire steel cord modeling system based on CATIA according to claim 4, characterized in that: Acquiring the steel cord single-filament model by plane sweeping includes confirming the single-filament center axis of the single-filament model under the composite winding structure, performing a sweeping operation based on the single-filament normal circle, setting the sweeping angle to linear sweeping, and setting the upper and lower extremes to twist number*360deg and 0.

6. The tire steel cord modeling system based on CATIA according to claim 4, characterized in that: Sweeping a steel cord monofilament model through a central spiral line includes confirming the inner diameter of the spiral monofilament of the monofilament model under a simple structure, and performing a sweeping operation based on the center of a spiral line starting plane to create the monofilament model.

7. The tire steel cord modeling system based on CATIA according to claim 4, characterized in that: Adjusting the contact surface accuracy of the steel cord model includes adding accuracy parameters of the steel cord model under the multi-layer winding structure and verifying the accuracy range through experiments.

8. The tire steel cord modeling system based on CATIA according to claim 1, characterized in that: Secondary development of modeling automation includes: Build a wire model; Establish the wire centerline model; Build a laminate model; The steel wire model will be combined with software for secondary development, and parameter-driven design parameters will be selected to modify the model. The CATIA is internally provided with a super copy function for realizing parameterized and automated drawing of the steel wire model.

9. The tire steel cord modeling system based on CATIA according to claim 8, characterized in that: The steel wire centerline model adds a centerline automatic modeling function by replacing the steel wire overall model with the steel wire centerline.

10. The tire steel cord modeling system based on CATIA according to claim 8, characterized in that: A cord layer is formed between the steel cords, and the laminate model is used to perform performance analysis and cord layer modeling operations on the cord layer.

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