Rapid modeling method and system for train wheel set
Through parametric design and the Creo secondary development platform, rapid modeling and assembly of train wheelsets were achieved, solving the problems of low efficiency and insufficient accuracy in traditional design and meeting the needs of modern intelligent manufacturing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-26
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional train wheelset design has a long cycle, is difficult to guarantee accuracy, and cannot meet personalized needs. Furthermore, existing CAD software has not optimized the process for wheelsets, resulting in low design efficiency and poor model consistency.
By adopting a parametric design method and integrating the parametric design process, combined with the Creo secondary development platform, a three-dimensional model is automatically generated through parameter-driven methods, and stress simulation is introduced to achieve rapid modeling and assembly of wheelsets.
It improves design efficiency and accuracy, supports personalized needs, lowers the barrier to entry, and enhances the structural strength and safety of wheelsets.
Smart Images
Figure CN121786949A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of digital design and manufacturing of trains, and in particular to a method and system for rapid modeling of train wheelsets. Background Technology
[0002] The wheelset is the core load-bearing and running gear of the rolling stock bogie, and its performance directly affects the safety, stability, and comfort of train operation. Traditional wheelset design processes heavily rely on the experience of designers, typically employing a sequential approach: calculation using empirical formulas, drawing two-dimensional blueprints, manually constructing three-dimensional models, and conducting physical prototype testing. This approach has significant drawbacks: First, the design cycle is lengthy, with a complete wheelset design iteration usually requiring several weeks; second, design accuracy is difficult to guarantee, as manual modeling and calculations are prone to human error, with industry reports indicating a rework rate of over 30% for drawings and models under traditional design processes; third, it struggles to meet the diverse and personalized needs of modern rail transit, such as custom wheel designs for different line conditions (e.g., heavy-haul, high-speed, urban rail), where traditional methods are slow to respond and costly.
[0003] Furthermore, while traditional computer-aided design (CAD) software, such as Creo, offers powerful modeling capabilities, it lacks process optimization for the specific complex assembly of wheelsets. Designers still need to manually perform numerous repetitive operations such as sketching, feature modeling, and defining assembly constraints, which is not only inefficient but also makes it difficult to ensure consistency and standardization of models between different designers or projects. In the simulation analysis phase, traditional methods require manually importing the design model into independent finite element analysis (FEA) software and redefining materials, loads, and boundary conditions. This process is cumbersome and prone to geometric errors due to model conversion, failing to achieve a seamless closed loop between design and simulation. Therefore, developing an integrated, parametric, and intelligent rapid modeling method for wheelsets is of urgent and significant importance for improving the digitalization level of my country's rail transit equipment R&D, shortening the R&D cycle, and reducing R&D costs.
[0004] A search revealed Chinese invention patent application publication number CN119416360, which discloses a method for generating wheelset design schemes. The method includes: constructing a three-dimensional finite element model of the wheelset based on the basic parameters of the target wheelset and pre-acquired characteristic parameters; dividing the three-dimensional finite element model of the wheelset into a first mesh model based on a first mesh size, and performing simulation analysis on the first mesh model to output initial simulation results; determining the target stress contribution region and target noise contribution region in the three-dimensional finite element model of the wheelset based on strength simulation results, modal simulation results, and sound radiation simulation results; dividing the target stress contribution region and target noise contribution region into a second mesh model based on a second mesh size, and performing simulation analysis on the second mesh model to output target simulation results; and generating a wheelset design scheme based on the target simulation results. This existing patent application has the problem of not being able to achieve rapid wheelset modeling.
[0005] How to achieve rapid and personalized modeling of train wheelsets has become a technical problem that needs to be solved. Summary of the Invention
[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a method and system for rapid modeling of train wheelsets.
[0007] The objective of this invention can be achieved through the following technical solutions: According to one aspect of the present invention, a method for rapid modeling of train wheelsets is provided, the method comprising: Establish a wheelset parametric design model library to preset the core parameter set required for wheelset design, including various wheelset spoke models, rim treads, and axle models; Integrated parametric design process: Select a preset model from the wheelset parametric design model library or directly input parameters to perform wheelset parameter design, including the parameter design of wheelset spokes, rim treads, wheels and axles; Simulation verification process: Introduce wheel stress simulation to verify whether the structural strength of the designed wheelset meets the requirements; if it meets the requirements, then perform wheelset assembly; otherwise, return to the integrated parameter design process for iterative optimization until the structural strength of the wheelset meets the requirements before performing wheelset assembly.
[0008] As a preferred technical solution, the integrated parameter design is based on the Creo secondary development platform, which encapsulates complex 3D modeling operations within a graphical interface and achieves automatic generation of 3D models through parameter-driven processes.
[0009] As a preferred technical solution, in the Creo secondary development platform, by defining the association between listeners and function keys, user input parameters are passed to the modeling logic, thereby automatically generating 3D model modeling.
[0010] As a preferred technical solution, in the integrated parameter design process, the parameters of the wheelset spokes are designed first, then the parameters of the wheel flange tread are designed, and finally the parameters of the wheel and axle are designed based on the parameters of the wheelset spokes and wheel flange tread.
[0011] As a preferred technical solution, the spokes and tread surfaces of the wheelset are modeled using non-uniform rational B-spline surfaces with high precision.
[0012] As a preferred technical solution, the wheelset assembly process includes: automatically reading the current wheel and axle models and their key parameters, and using parameter-driven technology to automatically generate and assemble the wheelset components based on the automatic constraint relationship model of the wheelset assembly, thereby generating a fully parameterized three-dimensional assembly model.
[0013] As a preferred technical solution, the core parameter set of the wheelset parametric design model library includes wheel diameter, rim height, rim thickness, and spoke type.
[0014] According to another aspect of the present invention, a rapid modeling system for train wheelsets is provided, the system comprising: The wheelset parametric design model library is used to preset the core parameter set required for wheelset design, including various wheelset spoke models, rim treads, and axle models; The parametric design module allows users to select preset models from the wheelset parametric design model library or directly input parameters to perform integrated wheelset parameter design, including parameter design of wheelset spokes, rim treads, wheels, and axles. The wheel stress simulation module is used to calculate the stress of the currently designed wheelset and output simulation data to quickly determine the stress concentration and strength of the wheelset. The wheelset assembly module automatically assembles the designed wheels and axles into a complete wheelset assembly.
[0015] As a preferred technical solution, the parametric design module includes a wheel design submodule, an axle design submodule, a wheel spoke design submodule, and a wheel flange tread design submodule. The wheel spoke design submodule allows for precise control of the spoke shape, strength, and weight distribution by selecting a preset spoke model or directly inputting key parameters for customization. The wheel flange tread design submodule allows for customized adjustments by selecting a preset wheel flange tread model or directly inputting key parameters, enabling refined parameter definition of the tread profile that directly contacts the rail. The wheel design submodule integrates the designed parameters of the rim tread and spokes to generate a three-dimensional model of the wheel. The axle design submodule designs the corresponding axle parameters based on the designed wheel spokes and rim treads.
[0016] As a preferred technical solution, the wheelset assembly module automatically reads the current wheel and axle models and their key parameters, and uses parameter-driven technology to automatically generate and assemble the wheelset components based on the automatic constraint relationship model of the wheelset assembly, generating a fully parameterized three-dimensional assembly model.
[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) Based on parametric drive and Creo secondary development platform, this invention integrates the scattered design steps into an integrated process, realizes the process-oriented and modular modeling and assembly of wheel spokes, wheel flange treads and axles, avoids the repetitive labor and human error of traditional manual modeling, and improves the efficiency and accuracy of design.
[0018] (2) This invention defines the association between the listener and the function key in the Creo secondary development platform, and encapsulates complex operations through a user-friendly interactive interface, which greatly reduces the threshold for use and provides an effective solution for the rapid modeling and intelligent design of train wheelsets, adapting to the trend of modern intelligent manufacturing and personalized customization.
[0019] (3) This invention supports stress simulation function, which can verify mechanical performance during the design stage, optimize wheelset structure, and improve product reliability and safety.
[0020] (4) This invention is not only applicable to standardized wheelset design, but also supports customized needs. It has the advantages of high degree of design automation, simple operation, fast modeling speed and good consistency of results. Attached Figure Description
[0021] Figure 1 This is a flowchart illustrating the rapid modeling method for wheel pairs in this invention. Figure 2 This is a schematic diagram of the stress cloud diagram of the train wheelset in this invention; Figure 3 This is a diagram showing the completed assembly of the wheelset in this invention. Figure 4 This is a schematic diagram of the rapid modeling system for wheel pairs in this invention. Detailed Implementation
[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.
[0023] This invention is a rapid modeling method for train wheelsets based on Creo secondary development, which aims to solve the problems of low efficiency, reliance on experience, and difficulty in meeting personalized needs in the traditional wheelset design process.
[0024] This embodiment relates to a rapid modeling method for train wheelsets. This method includes constructing a parametric design module, enabling streamlined and modular modeling and assembly of wheel spokes, tread surfaces, and axles. The system first guides the user to complete the input and design of spoke and tread parameters, then automatically generates a 3D wheel model. Users can perform stress simulation on the wheelset to determine the optimization effect. Finally, the assembly module automatically assembles the left and right wheels and axle into a complete wheelset model according to preset parameters. Compared with existing technologies, this method integrates scattered design steps into a unified process and encapsulates complex operations through a user-friendly interface, significantly improving design efficiency and accuracy and lowering the barrier to entry. This method is not only applicable to standardized wheelset design but also supports customized needs. It has the advantages of high automation, ease of operation, fast modeling speed, and good result consistency, providing an effective solution for rapid modeling and intelligent design of train wheelsets.
[0025] This invention constructs a highly integrated parametric design module based on the Creo secondary development platform, with a clear workflow. Wheelsets, as core components of train bogies, have complex structures and high precision requirements. Traditional modeling methods are inefficient and error-prone. Therefore, this invention first constructs a parametric model library covering various standard wheelset types. This parametric model library pre-sets key geometric parameters, material properties, and assembly relationships for wheel spokes, rim treads, and axles, serving as the foundation for rapid modeling.
[0026] A method for rapid modeling of train wheelsets, such as Figure 1 As shown, this includes the following steps: S1. Establish a parameterized model library for wheelsets and modify key parameters during subsequent design processes.
[0027] The wheelset parametric model library defines the core parameter set required for wheelset design, including but not limited to: wheel diameter, rim height, rim thickness, and spoke type. These parameters are stored in a structured format in the database, supporting retrieval and retrieval by project and wheelset type.
[0028] S2. For the wheelset design system, build an integrated parametric design module to design wheelset parameters.
[0029] Its core workflow begins with the program's startup. Users then enter the wheelset spoke design submodule to design the spokes, where they can select a preset spoke model or directly input key parameters for customization. After completing the spoke design, the system guides the user to the wheel flange tread design submodule, where the tread profile that directly contacts the rail is defined with refined parameters. After the wheel body and tread are designed separately, the wheel design submodule integrates and generates the model. Finally, through the wheelset assembly module, the two wheels and one axle are automatically assembled into a complete three-dimensional wheelset model according to the set mating relationship, thus achieving seamless integration and automation from part design to assembly.
[0030] The parametric design module, as the core of the wheelset design system, integrates the parametric design functions of two key wheel components: the internal support structure "spokes" and the external contact profile "rim tread." This enables the collaborative design and optimization of the mechanical transmission from the wheel's internal structure to the external wheel-rail contact relationship. In the spoke design section, users define a series of key geometric dimensions to precisely control the shape, strength, and weight distribution of the spokes, thereby generating support structures that meet different load and lifespan requirements. In the rim tread design section, another set of parameters is input to drive the generation of a standard or custom tread profile curve. This profile directly determines the stability, guidance, and wear characteristics of the train. Although these two sub-modules have different functional focuses, they are seamlessly connected through a unified parametric platform, allowing engineers to simultaneously consider the interaction between the spoke structure and the tread shape. This enables efficient and accurate completion of the comprehensive wheel design, laying a solid foundation for subsequent wheelset assembly.
[0031] For wheel surfaces, especially spokes with complex geometry and treads in contact with the rail, high-precision parametric modeling is performed using non-uniform rational B-spline (NURBS) surfaces. The surface equation is defined as: in, For the location of control points, As a weighting factor, and These are B-spline basis functions of order p and q, respectively. Various fitting parameters input by the user are dynamically adjusted by a mapping algorithm to control points. With weight This process generates the tread curve or spoke curve, allowing for precise control of the local and overall shape of the surface, meeting the demands of high-performance wheelset design. The essence of the entire surface equation is that, for any given point (u, v), the final coordinates S(u, v) are determined by a weighted average of the contributions of all control points using indices i and j. In parametric design, user-inputted engineering parameters (such as spoke thickness and rim thickness) are precisely what drive the positions of the control points within this mechanism. With weighting factors This is used to update the model.
[0032] The parametric design module is built on the Creo secondary development tool. Its core lies in encapsulating complex 3D modeling operations within a graphical interface, achieving automatic model generation through parameter-driven mechanisms, including: Create a user interface dialog box to receive parameter values input by the user; Create a wheelset design folder, project data, and wheelset data according to the project structure; Parametric design of train wheelsets is performed through a graphical interface. Generate the corresponding 3D model based on the template parameters in the wheelset parametric design model library and the wheelset specification parameters input by the user; Implement a model generation function to automatically create 3D geometry of wheels and axles based on a parameter set.
[0033] When different projects require different wheelset specifications, the parameter configuration can be completed simply by adjusting key parameters such as the wheel flange tread and spokes in the train wheelset.
[0034] When generating wheelset parameters, the system automatically calls the parameters corresponding to the wheelset type from the wheelset parametric design model library and loads related data for designers to select, reducing repetitive data input and manual modeling operations.
[0035] When designing wheelsets, the system determines whether the parameters can form a closed shape based on the input or preset parameters. If the parameters are reasonable, the system automatically generates models of each component based on the parameter objects.
[0036] User interaction in the parametric design module is implemented through dialog boxes. The following example uses the confirmation button to illustrate the interaction logic by defining the association between the button and listeners on the user interface. The code implementation process for this interaction logic is shown below: class confirm1Listener : public uifcDefaultPushButtonListener { public: confirm1Listener() {}; ~confirm1Listener() {}; / / Define the type of listener for the confirm button. void OnActivate(uifcPushButton_ptr component) override { / / Override the activation event handler function uifcLayout_ptr Sub1 = uifcLayoutFind(“test1”, “subtab1”); / / Find and define the sub-dialog box named “subtab1” in “test1”. } }; confirm1_button->AddActionListener(confirm1_listener); uifcPushButton_ptr confirm1_button = uifcPushButtonFind("test1", "comfirm1"); / / In the dialog initialization section, find and create a listener and associate it with the interface button. Here, `confirm1_listener` is the name of the button listener; `test1` is the filename of the dialog box created by the Creo secondary development tool; `subtab1` is the name of the auxiliary dialog box created by the Creo secondary development tool; `confirm1` is the name of the button created by the Creo secondary development tool; `confirm1_button` is a pointer to the defined button object, used to operate the button; and the `SetVisible(xtrue)` and `SetVisible(xfalse)` functions control the display and hiding of the auxiliary dialog box. More simply, clicking the `confirm1` button in the Creo secondary development tool interface triggers the `OnActivate` function of the `confirm1_listener` listener. Within this function, the sub-dialog box `subtab1` is located, and subsequently, the `SetVisible` function is used to display the sub-dialog box, guiding the user to input parameters, which are then passed to the modeling logic to automatically generate a 3D model.
[0037] S3. Integrated stress simulation module for verifying wheelset mechanical performance.
[0038] To verify the structural strength of wheelsets during the design phase, this invention integrates a wheel stress simulation module. The specific steps are as follows: Users input load conditions through the simulation interface, and the system automatically calls the integrated finite element analysis solver to mesh the current wheelset 3D model, apply loads and boundary conditions, and perform stress calculations. The solver outputs simulation data including Von Mises equivalent stress, deformation distribution, normal stress, shear stress, and principal stresses.
[0039] The system automatically generates stress contour plots based on simulation data (such as...). Figure 2As shown in the figure, deformation cloud diagrams, etc., are visualized. Designers can quickly determine the stress concentration and strength of the wheelset based on the simulation results, and then return to step 2 to adjust the design parameters, realizing rapid iterative optimization of design and simulation.
[0040] S4. Establish an automatic constraint relationship model for wheelset assembly to achieve automatic and precise assembly of components such as wheel flanges, treads, and spokes.
[0041] The wheelset assembly module is the final output stage of this system's workflow. Its function is to automatically assemble the two wheels (left and right) and one axle, as designed in the aforementioned modules, into a complete wheelset assembly. This process is parameter-driven throughout. Based on pre-set assembly parameters such as axle length, diameter, wheel press-fit position, and fit tolerances, the system automatically and precisely positions and constrains each component together in the Creo environment, generating a fully parametric 3D assembly model. The wheelset assembly module not only eliminates tedious manual assembly operations but also ensures absolute accuracy in assembly relationships.
[0042] Upon activating the wheelset assembly module, the system automatically reads the current wheel and axle models and their key parameters. Based on the automatic constraint relationship model, it automatically adds constraints such as overlap, distance, and symmetry in the Creo assembly environment, precisely positioning the components and generating a model as shown below. Figure 3 The complete 3D wheelset assembly shown greatly improves assembly efficiency.
[0043] This invention encapsulates complex 3D modeling operations into a graphical interface through parametric design, allowing users to automatically generate models (such as wheels and axles) simply by inputting parameters and clicking buttons.
[0044] This embodiment also relates to a rapid modeling system for train wheelsets, such as... Figure 4 The system includes: This wheelset parametric design model library defines the core parameter set required for wheelset design, including various wheelset spoke models, rim tread models, and axle models. The core parameter set includes, but is not limited to: wheel diameter, rim height, rim thickness, and spoke type. These parameters are stored in a structured format in a database, supporting retrieval and retrieval by project and wheelset type.
[0045] The parametric design module includes a wheel design submodule, an axle design submodule, a wheel spoke design submodule, and a wheel flange tread design submodule.
[0046] The wheel spoke design submodule allows for precise control of the spoke shape, strength, and weight distribution by selecting a preset spoke model or directly inputting key parameters for customization, thereby generating a support structure that meets different load and lifespan requirements.
[0047] The wheel flange tread design submodule allows for customized adjustments by selecting a preset wheel flange tread model or directly inputting key parameters, enabling refined parameter definition of the tread profile that directly contacts the rail.
[0048] The wheel design submodule integrates the designed parameters of the rim tread and spokes to generate a three-dimensional model of the wheel.
[0049] The axle design submodule designs the corresponding axle parameters based on the designed wheel spokes and rim treads.
[0050] The wheel stress simulation module allows users to input load conditions through the simulation interface. The system automatically calls the integrated finite element analysis solver to calculate the stress of the current wheelset, outputting simulation data including Von Mises equivalent stress, deformation distribution, normal stress, shear stress, and principal stresses. Based on the simulation data, stress contour maps and deformation contour maps are automatically generated to quickly determine the stress concentration of the wheelset and whether its strength meets requirements, enabling rapid iterative optimization of design and simulation.
[0051] The wheelset assembly module automatically assembles the designed left and right wheels and one axle into a complete wheelset assembly. Specifically, it automatically reads the current wheel and axle models and their key parameters, and automatically adds constraints in the Creo assembly environment based on the automatic constraint relationship model, accurately positions the components, and generates a complete 3D wheelset assembly model.
[0052] This invention, based on a parametric design module and an automatic constraint relationship model, employs parameter-driven technology to achieve an integrated process from part design and automated assembly to simulation verification. Users only need to input or select parameters through a user-friendly graphical interface, and the system can automatically generate and output a fully parametric 3D model of the wheelset that meets the requirements.
[0053] The electronic device of this invention includes a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in read-only memory (ROM) or loaded from a storage unit into random access memory (RAM). The RAM may also store various programs and data required for device operation. The CPU, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.
[0054] Multiple components in the device are connected to the I / O interface, including: input units such as keyboards and mice; output units such as various types of displays and speakers; storage units such as disks and optical discs; and communication units such as network interface cards (NICs), modems, and wireless transceivers. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.
[0055] The processing unit performs the various methods and processes described above. For example, in some embodiments, the methods may be implemented as computer software programs tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on the device via ROM and / or a communication unit. When the computer program is loaded into RAM and executed by the CPU, one or more steps of the methods described above may be performed. Alternatively, in other embodiments, the CPU may be configured to execute the methods by any other suitable means (e.g., by means of firmware).
[0056] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.
[0057] The program code used to implement the methods of the present invention can be written in any combination of one or more programming languages. This program code can be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing device, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code can be executed entirely on the machine, partially on the machine, as a standalone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.
[0058] In the context of this invention, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory, optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.
[0059] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A method for rapid modeling of train wheelsets, characterized in that, The method includes: Establish a wheelset parametric design model library to preset the core parameter set required for wheelset design, including various wheelset spoke models, rim tread models, and axle models; Integrated parametric design process: Select a preset model from the wheelset parametric design model library or directly input parameters to perform wheelset parameter design, including the parameter design of wheelset spokes, rim treads, wheels and axles; Simulation verification process: Introduce wheel stress simulation to verify whether the structural strength of the designed wheelset meets the requirements; if it meets the requirements, then perform wheelset assembly; otherwise, return to the integrated parameter design process for iterative optimization until the structural strength of the wheelset meets the requirements before performing wheelset assembly.
2. The method for rapid modeling of train wheelsets according to claim 1, characterized in that, The integrated parameter design is based on the Creo secondary development platform, which encapsulates complex 3D modeling operations within a graphical interface and achieves automatic generation of 3D models through parameter-driven processes.
3. The method for rapid modeling of train wheelsets according to claim 1, characterized in that, In the Creo secondary development platform, by defining the association between listeners and function keys, user input parameters are passed to the modeling logic, thereby automatically generating 3D model modeling.
4. The method for rapid modeling of train wheelsets according to claim 1, characterized in that, In the integrated parameter design process, the parameters of the wheelset spokes are designed first, then the parameters of the wheel flange tread are designed, and finally the parameters of the wheel and axle are designed based on the parameters of the wheelset spokes and wheel flange tread.
5. The method for rapid modeling of train wheelsets according to claim 1, characterized in that, For the spokes and tread surfaces of the wheelset, high-precision parametric modeling is performed using non-uniform rational B-spline surfaces.
6. The method for rapid modeling of train wheelsets according to claim 1, characterized in that, The wheelset assembly process includes: automatically reading the current wheel and axle models and their key parameters, and using parameter-driven technology to automatically generate and assemble the wheelset components based on the automatic constraint relationship model of the wheelset assembly, thereby generating a fully parameterized three-dimensional assembly model.
7. The method for rapid modeling of train wheelsets according to claim 1, characterized in that, The core parameter set of the wheelset parametric design model library includes wheel diameter, rim height, rim thickness, and spoke type.
8. A system utilizing the rapid modeling method for train wheelsets as described in any one of claims 1 to 7, characterized in that, The system includes: The wheelset parametric design model library is used to preset the core parameter set required for wheelset design, including various wheelset spoke models, rim tread models, and axle models; The parametric design module allows users to select preset models from the wheelset parametric design model library or directly input parameters to perform integrated wheelset parameter design, including parameter design of wheelset spokes, rim treads, wheels, and axles. The wheel stress simulation module is used to calculate the stress of the currently designed wheelset and output simulation data to quickly determine the stress concentration and strength of the wheelset. The wheelset assembly module automatically assembles the designed wheels and axles into a complete wheelset assembly.
9. The system according to claim 8, characterized in that, The parametric design module includes a wheel design submodule, an axle design submodule, a wheel spoke design submodule, and a wheel flange tread design submodule; The wheel spoke design submodule allows for precise control of the spoke shape, strength, and weight distribution by selecting a preset spoke model or directly inputting key parameters for customization. The wheel flange tread design submodule allows for customized adjustments by selecting a preset wheel flange tread model or directly inputting key parameters, enabling refined parameter definition of the tread profile that directly contacts the rail. The wheel design submodule integrates the designed parameters of the rim tread and spokes to generate a three-dimensional model of the wheel. The axle design submodule designs the corresponding axle parameters based on the designed wheel spokes and rim treads.
10. The system according to claim 8, characterized in that, The wheelset assembly module automatically reads the current wheel and axle models and their key parameters, and uses parameter-driven technology to automatically generate and assemble the wheelset components based on the automatic constraint relationship model of the wheelset assembly, generating a fully parameterized three-dimensional assembly model.