Automobile a column reinforcing pipe preparation parameter determination method and device, storage medium and electronic equipment

Abstract

The application relates to a method and device for determining preparation parameters of an automobile A-pillar reinforcing pipe, a storage medium and an electronic device. The method comprises the following steps: obtaining a bending parameter selection range, a preforming parameter selection range and a hot air expansion parameter selection range of the automobile A-pillar reinforcing pipe in a bending simulation process, a preforming simulation process and a hot air expansion simulation process respectively; selecting multiple sets of parameter combinations of the bending parameters, the preforming parameters and the hot air expansion parameters from the parameter selection ranges; for each set of parameter combinations, performing simulation in the order of the simulation processes; outputting a simulation result of the automobile A-pillar reinforcing pipe after the simulation processes are completed; and determining a target parameter combination from the multiple sets of parameter combinations according to the simulation result, which is used for preparing the automobile A-pillar reinforcing pipe. The application solves the technical problem of low product yield caused by low parameter accuracy in preparing the automobile A-pillar reinforcing pipe.

Description

Technical Field

[0001] This application relates to the field of automotive simulation, and in particular to a method, apparatus, storage medium, and electronic device for determining the manufacturing parameters of an automotive A-pillar reinforcing tube. Background Technology

[0002] In existing technologies, the production process of automotive A-pillar reinforcement tubes typically involves transferring a heated tube blank onto a mold, pre-expanding it with gas before closing the mold, and then continuing to expand the gas after closing the mold to ensure the surface of the tube blank fits snugly against the mold cavity. Pressure is then maintained, followed by quenching to complete the manufacturing of the automotive A-pillar reinforcement tube. This method is the specific manufacturing process for automotive A-pillar reinforcement tubes, resulting in the finished product. However, due to the uncertainties in the heating, stretching, and expansion processes of the material during production, selecting appropriate manufacturing parameters is crucial for ensuring a high yield rate.

[0003] In existing technologies, it is only possible to select appropriate parameters for manufacturing automotive A-pillar reinforcing tubes through trial and error, and it is impossible to obtain accurate manufacturing parameters that can guarantee the yield rate. Summary of the Invention

[0004] This application provides a method, apparatus, storage medium, and electronic device for determining the preparation parameters of an automotive A-pillar reinforcement tube, in order to solve the technical problem of low yield caused by low accuracy of the preparation parameters of the automotive A-pillar reinforcement tube.

[0005] In a first aspect, this application provides a method for determining the manufacturing parameters of an automotive A-pillar reinforcement tube, comprising: obtaining the selection ranges of bending parameters, preforming parameters, and thermal expansion parameters for the automotive A-pillar reinforcement tube in bending simulation, preforming simulation, and thermal expansion simulation processes, respectively; selecting multiple sets of parameter combinations of bending parameters, preforming parameters, and thermal expansion parameters from the bending parameter selection ranges, preforming parameter selection ranges, and thermal expansion parameter selection ranges; for each set of parameter combinations, performing a bending simulation process on the automotive A-pillar reinforcement tube using the bending parameters, a preforming simulation process using the preforming parameters, and a thermal expansion simulation process using the thermal expansion parameters, in the order of the simulation processes; outputting the simulation results of the automotive A-pillar reinforcement tube after completing the simulation processes; and determining a target parameter combination from the multiple sets of parameter combinations based on the simulation results, for use in manufacturing the automotive A-pillar reinforcement tube.

[0006] As an optional example, before obtaining the simulation parameters of the car A-pillar reinforcing tube, the above method further includes: obtaining the material parameters of the simulation material corresponding to the car A-pillar reinforcing tube; performing flattening simulation and flaring simulation on the simulation material according to the material simulation parameters in the material parameters; and determining whether the simulation material after the flattening simulation and flaring simulation is qualified by using the material structure parameters in the material parameters.

[0007] Secondly, this application provides a device for determining the manufacturing parameters of an automotive A-pillar reinforcement tube, comprising: an acquisition module, used to acquire the selection ranges of bending parameters, preforming parameters, and thermal expansion parameters for the automotive A-pillar reinforcement tube in the bending simulation process, the preforming simulation process, and the thermal expansion simulation process, respectively; a selection module, used to select multiple sets of bending parameters, preforming parameters, and thermal expansion parameters from the selection ranges of bending parameters, preforming parameters, and thermal expansion parameters; a simulation module, used to perform a bending simulation process on the automotive A-pillar reinforcement tube using the bending parameters, a preforming simulation process using the preforming parameters, and a thermal expansion simulation process using the thermal expansion parameters for each set of parameters, in the order of the simulation processes; an output module, used to output the simulation results of the automotive A-pillar reinforcement tube after the simulation processes are completed; and a determination module, used to determine a target parameter combination from the multiple sets of parameter combinations based on the simulation results, for use in manufacturing the automotive A-pillar reinforcement tube.

[0008] Thirdly, this application provides an electronic device, comprising: at least one communication interface; at least one bus connected to the at least one communication interface; at least one processor connected to the at least one bus; and at least one memory connected to the at least one bus, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the method for determining the manufacturing parameters of the automotive A-pillar reinforcing tube as described above.

[0009] Fourthly, this application also provides a computer storage medium storing computer-executable instructions for executing the method for determining the preparation parameters of the automotive A-pillar reinforcing tube according to any one of the above claims of this application.

[0010] Compared with the prior art, the technical solution provided in this application has the following advantages: The solution provided in this application obtains the selection ranges of bending parameters, preforming parameters, and thermal expansion parameters for the automotive A-pillar reinforcement tube in the bending simulation process, preforming simulation process, and thermal expansion simulation process, respectively; selects multiple sets of bending parameters, preforming parameters, and thermal expansion parameter combinations from the bending parameter selection ranges, preforming parameter selection ranges, and thermal expansion parameter selection ranges; for each set of parameter combinations, the bending parameters are used to perform bending simulation on the automotive A-pillar reinforcement tube according to the sequence of the simulation process. The process involves a pre-forming simulation process using the pre-forming parameters to simulate the pre-forming of the automotive A-pillar reinforcement tube, and a thermal expansion simulation process using the thermal expansion parameters to simulate the thermal expansion of the automotive A-pillar reinforcement tube. After completing the simulation process, the simulation results of the automotive A-pillar reinforcement tube are output. Based on the simulation results, a target parameter combination is determined from multiple parameter combinations to create a scheme for manufacturing the automotive A-pillar reinforcement tube. This allows for the selection of different parameter combinations for simulation of the automotive A-pillar reinforcement tube, and the determination of the optimal target parameter combination based on the simulation results. This solves the problem of low yield caused by low accuracy of parameters in manufacturing automotive A-pillar reinforcement tubes. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0014] Figure 1 A flowchart illustrating a method for determining the manufacturing parameters of an automotive A-pillar reinforcing tube, provided in this application embodiment; Figure 2 A simulation flowchart of an automotive A-pillar reinforcement tube provided in this application embodiment; Figure 3 A bending control diagram for a method of determining the manufacturing parameters of an automotive A-pillar reinforcing tube provided in an embodiment of this application; Figure 4A steel pipe selection diagram for a method of determining the manufacturing parameters of an automotive A-pillar reinforcing tube provided in an embodiment of this application; Figure 5 A flared schematic diagram illustrating a method for determining the manufacturing parameters of an automotive A-pillar reinforcing tube, provided in an embodiment of this application; Figure 6 A flattened schematic diagram illustrating a method for determining the manufacturing parameters of an automotive A-pillar reinforcing tube, as provided in an embodiment of this application; Figure 7 A schematic diagram of steel pipe variations for a method of determining the manufacturing parameters of an automotive A-pillar reinforcing tube provided in this application embodiment; Figure 8 A schematic diagram of the structure of a simulation device for a car A-pillar reinforcement tube provided in an embodiment of this application; Figure 9 This is a schematic diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0017] To address the technical problem of low yield caused by low accuracy of parameters in the fabrication of automotive A-pillar reinforcing tubes in existing technologies, this application provides a method for determining the fabrication parameters of automotive A-pillar reinforcing tubes, which can achieve the effect of accurate process simulation for automotive A-pillar reinforcing tubes.

[0018] Figure 1 This is a flowchart illustrating a method for determining the manufacturing parameters of an automotive A-pillar reinforcing tube, as provided in an embodiment of this application. Figure 1 As shown, the method for determining the manufacturing parameters of the aforementioned automotive A-pillar reinforcing tube includes: S102, respectively obtain the selection range of bending parameters, preforming parameters and thermal expansion parameters for the automotive A-pillar reinforcement tube in the bending simulation process, preforming simulation process and thermal expansion simulation process; S104, Select multiple sets of bending parameters, preforming parameters and hot expansion parameters from the bending parameter selection range, the preforming parameter selection range and the hot expansion parameter selection range; S106, For each set of parameters, in the order of the simulation process, the bending parameters are used to perform the bending simulation process on the car A-pillar reinforcing tube, the preforming parameters are used to perform the preforming simulation process on the car A-pillar reinforcing tube, and the thermal expansion parameters are used to perform the thermal expansion simulation process on the car A-pillar reinforcing tube. S108, After completing the simulation process, output the simulation results of the car A-pillar reinforcement tube; S110, Based on the simulation results, a target parameter combination is determined from multiple sets of parameter combinations for use in preparing the automotive A-pillar reinforcement tube.

[0019] This application can be used to determine the optimal manufacturing parameters for automotive A-pillar reinforcing tubes. By selecting the optimal manufacturing parameters, the yield of automotive A-pillar reinforcing tubes can be improved.

[0020] To determine the optimal manufacturing parameters, this application proposes a process simulation method. By selecting multiple combinations of manufacturing parameters within a preset parameter range, process simulation is performed for each parameter combination to determine whether the automotive A-pillar reinforcing tube is qualified in the simulation results, thereby obtaining the optimal parameter combination.

[0021] In this application, the process simulation includes pipe bending simulation, preforming simulation, and thermal expansion simulation. The parameter selection range includes the selection ranges for pipe bending parameters, preforming parameters, and thermal expansion parameters. Multiple parameters are selected from different parameter selection ranges, and these parameters are combined to obtain multiple parameter combinations. For example, if 10 parameters are selected for the pipe bending parameter selection range, 20 parameters for the preforming parameter selection range, and 10 parameters for the thermal expansion parameter selection range, then the total number of parameter combinations is 10 * 20 * 10 = 2000.

[0022] Choosing more parameters results in more parameter combinations. To reduce the number of parameter combinations, one can first fix the preforming and thermal expansion parameters, select multiple parameters from the bending parameter selection range, and perform a simulation to obtain the optimal bending parameters. Then, using the optimal bending parameters, select multiple parameters from the preforming parameters, fix the thermal expansion parameters, perform a simulation to obtain the optimal preforming parameters, and finally select multiple parameters from the thermal expansion parameters for a simulation. This approach significantly reduces the number of parameter combinations. For example, if the bending parameter selection range has 10 parameters, the preforming parameter selection range has 20 parameters, and the thermal expansion parameter selection range has 10 parameters, by first determining the optimal bending parameters, then the optimal preforming parameters, and finally the optimal thermal expansion parameters, the total number of parameter combinations becomes 10 + 20 + 10 = 40.

[0023] For determining the selection ranges of bending parameters, preforming parameters, and thermal expansion parameters, this application sets different ranges based on different materials. Furthermore, the size of the parameter selection range will also be adjusted according to the complexity of the A-pillar reinforcing tube structure in the simulation process. The more complex the structure of the A-pillar reinforcing tube, the larger the parameter selection range will be.

[0024] The process of simulating the manufacturing process of an automotive A-pillar reinforcement tube after selecting the parameter combination. The automotive A-pillar reinforcement tube is a component on a car, typically located in the A-pillars on the front left and right sides of the vehicle, providing good support and resistance to deformation upon impact. Simulating the manufacturing process of the automotive A-pillar reinforcement tube involves using computer software to simulate the manufacturing process from raw materials to the final product in a virtual environment. This eliminates the need for actual manufacturing and allows for the detection of potential anomalies during the manufacturing process, such as cracking, breakage, tension, and compression. This prevents the production of substandard products and the waste of human and financial resources by manufacturing the automotive A-pillar reinforcement tube without real data.

[0025] In this application, when performing process simulation for the automotive A-pillar reinforcing tube, since a thermal expansion process is involved, software such as AutoForm, Simufact Forming, or PAM-STAMP can be used. The modules in these software programs can support the microstructure transformation and deformation simulation required for the thermal expansion process.

[0026] If the process simulation of the A-pillar reinforcement tube of an automobile is to be performed, this application includes multiple simulation steps. The main simulation steps include: tube bending simulation step, preforming simulation step and thermal expansion simulation step. Different steps are executed in sequence. After all simulation steps are completed, the simulation results can be output.

[0027] Furthermore, this application can also output the simulation results of each simulation process for the automotive A-pillar reinforcement tube. For example, the simulation results of each simulation process can be output after all simulation processes are completed. Alternatively, the simulation results of a single simulation process can be output after that process is completed.

[0028] After judging the simulation results of the previous process, if the simulation results are qualified, the simulation will continue to the next process. If the simulation results of the previous process are unqualified, the process simulation can be paused, and the process simulation can continue after adjusting the parameters.

[0029] Alternatively, to examine the simulation results of the next process under incorrect parameters, the simulation of the next process can be continued even if the simulation results of the previous process are unsatisfactory, to observe further changes in the simulation results. During this process, erroneous simulation results from the previous process can be marked, and the aspects of the simulation results in the next process that might be affected by these erroneous results can be analyzed. Furthermore, after proceeding with the next simulation process, it can be determined which aspects of the simulation results are abnormal. By analyzing the erroneous simulation results from the previous process and comparing them with the predicted erroneous simulation results for the next process, it can be determined whether the impact of the erroneous simulation results from the previous process on the simulation results of the next process exceeded or fell short of expectations.

[0030] After all the simulation processes are completed, the simulation results of the car A-pillar reinforcement tube can be obtained.

[0031] Based on whether the simulation results are normal, the target parameter combination can be selected from multiple parameter combinations. The target parameter combination indicates that if the A-column reinforcing tube is prepared according to the combination, it is more likely to obtain a qualified product.

[0032] The solution provided in this application embodiment obtains the selection ranges of bending parameters, preforming parameters, and thermal expansion parameters for the automotive A-pillar reinforcement tube in the bending simulation process, preforming simulation process, and thermal expansion simulation process, respectively; selects multiple sets of bending parameters, preforming parameters, and thermal expansion parameter combinations from the selected ranges; for each set of parameter combinations, according to the simulation process sequence, the bending parameters are used to perform the bending simulation process on the automotive A-pillar reinforcement tube, and the preforming parameters are used to perform the thermal expansion simulation process on the automotive A-pillar reinforcement tube. The process involves a pre-forming simulation of the A-pillar reinforcement tube and a thermal expansion simulation of the A-pillar reinforcement tube using the aforementioned thermal expansion parameters. After completing the simulation process, the simulation results of the A-pillar reinforcement tube are output. Based on the simulation results, a target parameter combination is determined from multiple parameter combinations to create a scheme for manufacturing the A-pillar reinforcement tube. This allows for the selection of different parameter combinations for simulation of the A-pillar reinforcement tube, and the determination of the optimal target parameter combination based on the simulation results. This solves the problem of low yield caused by low accuracy of parameters in manufacturing the A-pillar reinforcement tube.

[0033] As an optional implementation, determining the target parameter combination from multiple parameter combinations based on the simulation results includes: determining all parameter combinations corresponding to the qualified simulation results in the simulation results of the simulation process; and selecting the combination with the smallest simulation parameters from all parameter combinations as the target parameter combination according to the simulation parameters in the preset selection conditions.

[0034] In this application, for parameter combinations that produce normal simulation results, it is explained that such parameter combinations are more likely to produce qualified automotive A-pillar reinforcing tubes. However, since there are multiple parameter combinations that produce normal simulation results, there are different ways to determine the optimal parameter combination.

[0035] The first approach is to minimize equipment pressure by optimizing the parameters under normal parameter combinations. For example, a normal parameter combination might include temperatures of 900 degrees Celsius and 920 degrees Celsius. At 920 degrees Celsius, the furnace would experience greater pressure. Therefore, choosing the 900-degree Celsius combination would reduce furnace pressure, making this the target parameter combination.

[0036] In this approach, the present application can also determine preset selection conditions, in which one or more parameters, such as temperature, pressure, or pressurization rate, are set. If the preset selection conditions include parameters, the parameter combination with the smallest value is selected as the target parameter combination. For example, the qualified parameter combination for a car A-pillar reinforcement tube includes the parameter combination of temperature A1, pressure A2, and pressurization rate A3, and the parameter combination of temperature B1, pressure B2, and pressurization rate B3. If pressure is set in the preset selection conditions, the parameter combination with the lowest pressure is selected as the target parameter combination.

[0037] The second approach involves clustering all qualified parameter combinations for automotive A-pillar reinforcement tubes. Since the clustering results indicate the degree of parameter clustering, it's possible to determine which parameter combinations are more likely to yield qualified automotive A-pillar reinforcement tubes. Therefore, by using clustering, the optimal parameter combination is determined as the target parameter combination.

[0038] In this application, the optimal combination of target parameters is determined through different methods for the preparation of automotive A-pillar reinforcing tubes, thereby reducing equipment pressure or increasing yield.

[0039] As an optional example, before obtaining the simulation parameters of the car A-pillar reinforcing tube, the above method further includes: obtaining the material parameters of the simulation material corresponding to the car A-pillar reinforcing tube; performing flattening simulation and flaring simulation on the simulation material according to the material simulation parameters in the material parameters; and determining whether the simulation material after flattening simulation and flaring simulation is qualified by using the material structure parameters in the material parameters.

[0040] This application proposes a process simulation for automotive A-pillar reinforcement tubes. Prior to this, process simulation can also be performed on the simulated materials of the automotive A-pillar reinforcement tubes. The simulated material for the automotive A-pillar reinforcement tubes is the material used in the process simulation, such as a specific type of steel. The material parameters of the process material include its original shape, size, ductility, and other parameters. If process simulation is performed on the automotive A-pillar reinforcement tube, the simulated steel is processed step-by-step to simulate the forming of the automotive A-pillar reinforcement tube. However, in this application, before performing process simulation on the simulated material for the automotive A-pillar reinforcement tube, process simulation of the simulated material is performed first. The process simulation of the simulated material differs from that of the automotive A-pillar reinforcement tube. The purpose of the simulated material's process simulation is to determine whether the simulated material is qualified. For example, when manufacturing automotive A-pillar reinforcement tubes, different types of steel can be used for process simulation to determine which steel can withstand the stretching and deformation during the manufacturing process of the automotive A-pillar reinforcement tube, and then the process simulation of the automotive A-pillar reinforcement tube is performed on that steel.

[0041] If the simulation involves manufacturing process steps for the simulated material, these steps can include flattening simulation and flaring simulation. Flattening simulation involves flattening the simulated material, while flaring simulation involves flaring the simulated material. Here, flaring simulation is used for the tubing in the simulated A-pillar reinforcement tube of an automobile, such as round or square tubes. The order of flattening and flaring simulations is not specified.

[0042] The material parameters of the simulated material in this application may include basic material parameters, material simulation parameters, and material structural parameters. The basic material parameters are the physical parameters of the simulated material, such as size, shape, ductility, and compressive strength. The material simulation parameters are those used during the flattening and flaring simulation processes, such as the pressure and degree of flattening during flattening simulation, and the flaring speed and size during flaring simulation. The material structural parameters are those used to determine whether the simulation results are acceptable after flattening and flaring simulations. For example, if the material structural parameters include a surface crack size parameter after flaring simulation, and the surface crack size exceeds this parameter, the simulated material is considered unqualified after flaring simulation. Therefore, this simulated material cannot support the complete process simulation of an automotive A-pillar reinforcement tube or the manufacturing of an automotive A-pillar reinforcement tube.

[0043] This application achieves the goal of ensuring the accuracy of the simulation materials used in the process simulation of the automotive A-pillar reinforcement tube by first performing process simulation on the simulation materials of the automotive A-pillar reinforcement tube before performing process simulation on the automotive A-pillar reinforcement tube.

[0044] As an optional example, the range of bending parameters includes the range of bending direction and bending angle. The process of using bending parameters to simulate bending of the car A-pillar reinforcement tube includes: determining the sub-bending direction and sub-bending angle of each bending operation when performing multiple bending operations on the car A-pillar reinforcement tube according to the bending direction and bending angle in the bending parameters; performing each bending operation sequentially to bend the car A-pillar reinforcement tube to a specified angle; and determining whether the bent car A-pillar reinforcement tube is qualified according to the bending structure parameters in the bending parameters.

[0045] In this application, the bending simulation process for the automotive A-pillar reinforcement tube using bending parameters involves the bending direction and bending angle. Since the initial simulation material for the automotive A-pillar reinforcement tube is a relatively straight tubular structure such as a round or square tube, while the automotive A-pillar reinforcement tube typically has an irregularly curved structure, a bending simulation process is required for the original simulation material. The simulation material is bent according to the bending direction and bending angle specified in the bending parameters to obtain the bent automotive A-pillar reinforcement tube. In this application, multiple sets of parameters are selected from the range of bending direction and bending angle options, serving as the bending direction and bending angle parameters in the parameter combination.

[0046] In the process of bending simulated materials to obtain the A-pillar reinforcement tube of a car using bending direction and bending angle, it can be done by bending once or by bending multiple times. If bending multiple times, the material is bent a little at a time, thus reducing the bending angle of each bend and avoiding excessive deformation of the simulated material due to a large angle bend at once. When bending multiple times, the sub-bending direction and sub-bending angle of each bend must be calculated. The original bending angle can be evenly distributed to obtain multiple sub-bending angles, or the sub-bending angles can be gradually increased, allowing the simulated material to bend at small angles first and then gradually increase to larger angles.

[0047] After multiple bending processes, a bent A-pillar reinforcement tube for automobiles is obtained. The bending tube structural parameters in the bending tube parameters record the parameters of a qualified A-pillar reinforcement tube. By collecting various parameters of the bent A-pillar reinforcement tube and comparing them with the qualified bending tube structural parameters, it is determined whether the automobile A-pillar reinforcement tube is qualified after the bending tube simulation process.

[0048] In this application, the bending process of the above-mentioned automobile A-pillar reinforcing tube is simulated, thereby achieving the purpose of accurately simulating the automobile A-pillar.

[0049] As an optional example, the range of preforming parameters includes the range of preforming simulation parameters. The preforming simulation process for the automotive A-pillar reinforcing tube using the preforming parameters includes: determining the preforming mold for preforming simulation based on the preforming simulation parameters in the preforming parameters; adjusting the shape of the bent automotive A-pillar reinforcing tube using the preforming mold to obtain the preforming simulation structure; and determining whether the preformed automotive A-pillar reinforcing tube is qualified based on the preforming structure parameters in the preforming parameters.

[0050] In this application, after the bending simulation process of the automotive A-pillar reinforcing tube, a preforming simulation process is further performed. In the preforming simulation process, the A-pillar reinforcing tube after the bending simulation process is initially pressed and formed using a corresponding preforming mold to obtain the preformed A-pillar reinforcing tube. In this application, multiple sets of preforming simulation parameters are selected from the range of preforming parameters as preforming simulation parameters in the parameter combination.

[0051] In this step, the preforming mold to be used is determined based on the preforming simulation parameters in the preforming parameters. Since the shape and structure of automotive A-pillar reinforcement tubes vary, a corresponding preforming mold must be selected to preform the bent A-pillar reinforcement tube. After selecting the preforming mold, the automotive A-pillar reinforcement tube is pressed and formed using the preforming mold to obtain the preformed automotive A-pillar reinforcement tube. The preforming structural parameters record the parameters of a qualified A-pillar reinforcement tube. After pressing, the preformed automotive A-pillar reinforcement tube is analyzed for its qualification based on the preforming structural parameters in the preforming parameters.

[0052] This application achieves accurate simulation of the automotive A-pillar reinforcing tube by performing a pre-forming simulation process on the automotive A-pillar reinforcing tube after the tube bending simulation process.

[0053] As an optional example, the range of hot gas expansion parameters includes the selection range of preset boost rate, preset air pressure, expansion parameters, and pressure holding quenching time. The process of using hot gas expansion parameters to simulate the hot gas expansion of the automotive A-pillar reinforcement tube includes: controlling the simulation heating furnace to heat to a preset temperature range at a heating rate greater than the preset boost rate, and ensuring that the air pressure inside the furnace is greater than the preset air pressure, according to the hot gas expansion simulation parameters; controlling the expansion of the automotive A-pillar reinforcement tube according to the expansion parameters; performing pressure holding quenching with a pressure holding quenching time corresponding to the thickness of the automotive A-pillar reinforcement tube; and determining whether the automotive A-pillar reinforcement tube is qualified after pressure holding quenching according to the hot gas expansion forming parameters.

[0054] In this application, the process of simulating the thermal expansion of an automotive A-pillar reinforcing tube using thermal expansion parameters involves multiple steps: furnace heating, expansion of the automotive A-pillar reinforcing tube, thickness identification of the simulation material (i.e., the pre-formed automotive A-pillar reinforcing tube), and pressure holding quenching. Furnace heating involves achieving preset temperatures and pressures within the simulation furnace to simulate the heating of the material inside. Thickness identification of the simulation material involves determining the thickness at different locations and selecting appropriate pressure holding quenching times for different thicknesses. This allows simulation materials of varying thicknesses to be pressure held and quenched according to their respective durations. This application allows the selection of multiple preset parameters for boost rate, pressure, expansion, and pressure holding quenching duration as parameters in different combinations.

[0055] The thickness identification of the simulated material in this application can be achieved by pre-obtaining the thickness of each part from the material parameters of the simulated material, which is a relatively simple step. Alternatively, after heating the simulated material in a simulation, the thickness may differ from the initial value due to temperature and pressure variations. In this case, the real-time thickness of the simulated material can be obtained for pressure holding and quenching. For obtaining the real-time thickness, this application can detect whether the thickness of the simulated material is still changing under suitable temperature and pressure conditions. If it remains stable, this thickness can be used as the real-time thickness; if the thickness is still changing, it is waited for to stabilize.

[0056] In this application, the thermal expansion simulation process for the automotive A-pillar reinforcement tube includes at least heating and pressure parameters, the thickness parameters of the simulation material, and thermal expansion structure parameters. The heating and pressure parameters are used to control the heating in the simulation furnace to achieve the preset temperature and pressure. During this process, the simulation furnace can be controlled to heat the material to a preset temperature range at a rate greater than the preset pressurization rate, while maintaining the furnace pressure above the preset pressure. The purpose of this heating and pressurization is to heat the simulation material of the automotive A-pillar reinforcement tube under a high temperature and pressure change environment, and to examine whether the automotive A-pillar reinforcement tube can stably bend and deform under high-intensity temperature and pressure changes. Then, the automotive A-pillar reinforcement tube is controlled to expand, and the thickness parameters of the expanded automotive A-pillar reinforcement tube can be obtained, or the real-time thickness can be obtained using the aforementioned method. Pressure holding and quenching are then performed based on the thickness at various locations of the automotive A-pillar reinforcement tube or the real-time thickness. The pressure holding and quenching time varies depending on the thickness.

[0057] This application allows for the division of materials of different thicknesses in automotive A-pillar reinforcing tubes into different regions. For example, after a section of reinforcing tube is heated and pressurized, it is bent according to the shape of the automotive A-pillar reinforcing tube. After bending, there are differences in thickness at different locations. Therefore, steel tubes of different thicknesses are divided into different regions, and then pressure quenching for different durations is performed on each region.

[0058] This application achieves precise process simulation of the automotive A-pillar reinforcement tube by performing a thermal expansion simulation process on the A-pillar reinforcement tube.

[0059] As an optional example, controlling the expansion of the car A-pillar reinforcing tube according to the expansion parameters in the hot air expansion parameters includes: controlling the expansion of the car A-pillar reinforcing tube until it is in zero-distance contact with the planar area of ​​the hot air expansion mold, and the maximum distance between it and the R-angle area of ​​the hot air expansion mold is less than a preset distance.

[0060] In this application, during the thermal expansion simulation of the A-pillar reinforcement tube of an automobile, when the temperature and pressure of the simulation furnace meet the conditions, the expansion of the A-pillar reinforcement tube can be controlled by a thermal expansion mold, allowing the tube to expand within the mold. As the A-pillar reinforcement tube expands, the gap between it and the mold gradually decreases until the planar area of ​​the mold is in zero-distance contact, and the maximum distance between the tube and the mold's radius (R-angle area) is less than a preset distance. At this point, the expansion is considered complete, and the expansion stops. Then, a pressure-holding quenching step is performed.

[0061] In this application, the expansion speed of the A-pillar reinforcing tube can be controlled by adjusting the rate of gas injection. The gas injection rate can be divided into several stages. The first stage is the expansion process where the A-pillar reinforcing tube is not in contact with the hot gas expansion mold. The second stage progresses from contact with the hot gas expansion mold to contact with every surface of the hot gas expansion mold. The third stage progresses from contact with every surface of the hot gas expansion mold to zero-distance contact with the planar area of ​​the hot gas expansion mold, and the maximum distance between the tube and the maximum radius (R-angle) area of ​​the hot gas expansion mold is less than a preset distance. The inflation rate can decrease progressively from the first to the third stage. The third stage can employ intermittent inflation, i.e., inflation for a period of time followed by a pause.

[0062] In this application, the expansion state is controlled during the thermal expansion process of the A-pillar reinforcement tube of an automobile, thereby achieving accurate simulation of the A-pillar reinforcement tube.

[0063] As an optional example, after completing the simulation process, outputting the simulation results of the automotive A-pillar reinforcement tube comprises: storing qualified simulation results and unqualified simulation results among the simulation results of each simulation process into corresponding subfolders in the folder of the simulation process respectively; for unqualified simulation results, determining the region of the automotive A-pillar reinforcement tube to which the unqualified simulation results belong; and marking the corresponding region in the simulation diagram of the unqualified simulation results according to the region to which the unqualified simulation results belong.

[0064] In the present application, after completing the bending simulation process, preforming simulation process and hot bulging simulation process of the automotive A-pillar reinforcement tube, the simulation results of each simulation process can be output. The simulation results of each simulation process can be stored in folders corresponding to each simulation process. Among the simulation results of each simulation process, there may include qualified simulation results and unqualified simulation results, and the qualified simulation results and unqualified simulation results are stored separately in corresponding subfolders.

[0065] The above storage method by dividing folders allows users to quickly find the simulation results of each simulation process according to the folder division, and view and analyze the commonalities of the qualified simulation results and unqualified simulation results by classification. For unqualified simulation results, the present application can determine the region of the automotive A-pillar reinforcement tube to which the unqualified simulation results belong, and then mark the corresponding region in the simulation diagram, such as marking methods including box selection, arrow marking and the like. In addition, for unqualified simulation results, they can be classified according to abnormal regions and stored in subfolders of each subdivided region under the subfolder for unqualified simulation results.

[0066] In the present application, by dividing subfolders for storage according to whether simulation results of each simulation process are qualified, regions of unqualified results and the like, the purpose of classified storage for specific types of abnormalities is achieved, and analysis can be performed according to abnormalities in specific regions and specific types of abnormalities, so as to analyze abnormal commonalities or abnormal causes. In the present application, the marking method for marking the corresponding region can also be determined according to the types of unqualified simulation results. For example, cracks can be marked by box selection, and notches can be marked by arrows.

[0067] The entire simulation process will be described by way of example below with reference to a specific process simulation process of an automotive A-pillar reinforcement tube. Figure 2 is a simulation flow chart of the present application. Whether the simulation result is qualified is determined through the processes of parameter setting, simulation calculation and simulation evaluation. And by optimizing products and processes and cycling under the condition that the simulation result is not qualified (NOK), a qualified product obtained by simulation is ensured for production of physical products.

[0068] In this application, before performing process simulation on the automotive A-pillar reinforcing tube, process simulation is first performed on the simulation material of the automotive A-pillar reinforcing tube. If a steel pipe is selected, process simulation is performed on the steel pipe to check whether the steel pipe meets the process requirements. If it meets the process requirements, the corresponding model of steel pipe is used to manufacture the automotive A-pillar reinforcing tube, and process simulation of the automotive A-pillar reinforcing tube is performed.

[0069] When performing process simulation on the steel pipe, this application first obtains theoretical information, including the material grade, thickness, yield strength, and tensile strength of the steel pipe. It then determines whether the length of the steel pipe is within the equipment's limits. Figure 3 As shown, the chord length of the pre-bent pipe fitting should be ≤2100mm. The initial steel pipe diameter should be selected as follows. Figure 4 As shown: (Maximum outer diameter of product - Initial outer diameter of steel pipe) / Initial outer diameter of steel pipe ≤ 5%. Steel pipe weld quality inspection: ① Perform a flaring test on the welded pipe. Requirements: When the flaring of the welded pipe is 1.25D (D is the original outer diameter of the steel pipe), cracks and fissures are not allowed in the base material and weld. The flaring should be as follows: Figure 5 As shown; ② The welded pipe undergoes a flattening test, requiring that when the welded pipe is flattened to 3 / 4D (D is the outer diameter of the steel pipe), no cracks or fissures are allowed in the base material and weld. The flattening should be as follows: Figure 6 As shown.

[0070] If the process simulation of the steel pipe is satisfactory, then this type of steel pipe can be used to manufacture automotive A-pillar reinforcement tubes. Next, we will conduct simulation of the automotive A-pillar reinforcement tubes.

[0071] In this application, AutoForm software can be used for process simulation to perform bending simulation, preforming simulation, and thermal expansion simulation on the steel pipe in sequence. Figure 7This diagram illustrates the changes in the steel pipe during the pipe bending simulation, preforming simulation, and thermal expansion simulation processes. The OP10 bend, after preforming, becomes the OP20 bend, which is further expanded by thermal expansion to become the OP30 bend. During the pipe bending simulation, the following settings are implemented: Friction coefficient: 0.45 for aluminum-silicon coated plates, 0.5 for bare plates; Analysis accuracy: Focus Variation (FV) level, shell element; Formability after bending: No wrinkling or cracking is required at the end of bending. Wrinkling is determined by no obvious wrinkling or material stacking during the process, and a material thickness increase of <5% after bending; Cracking is determined by a maximum thinning rate of <12% after bending; Dimensions after bending: Dimensional springback ≤ ±1.5mm is required at the end of bending. During the preforming simulation process, the following conditions must be met: Preforming formability: No wrinkling or cracking is required upon completion of preforming. Wrinkling is determined by: no obvious wrinkling or material stacking during the process, and a material thickness increase of <5% after bending. Cracking is determined by: a maximum thinning rate of <12% after bending. Preforming dimensions: Dimensional springback ≤±1.5mm is required upon completion of preforming. Finally, the thermal expansion simulation process is performed. Maximum expansion rate: The maximum expansion rate at the end of thermal expansion must be less than or equal to 5%, where expansion rate = (outer diameter after expansion - original outer diameter) / original outer diameter. Expansion mold fit rate: The gap between the expanded part and the mold must meet the following requirements: zero fit in planar areas, and <0.3mm in R-corner areas. Expansion dimensions: Sheet metal dimensions must meet the following requirements: ① For areas involving appearance seams, single-piece dimensional springback <±0.3mm; ② For areas involving sealing, welding matching, wind noise, and rodent holes, single-piece dimensional springback <±0.4mm; ③ For assembly avoidance areas, single-piece dimensional springback... <±0.7mm; ④ Other unspecified areas, single piece size springback <±1mm) Vickers hardness after bulging: The bulging parts are required to meet the corresponding hardness requirements: ①1500Mpa high-strength steel: Vickers hardness after hot air expansion >450HV10; ②1800Mpa high-strength steel: Vickers hardness after hot air expansion >540HV10; ③2000Mpa high-strength steel: Vickers hardness after hot air expansion >600HV10) Metallographic structure after bulging: The bulging parts are required to meet the following: Martensite ratio ≥95%, and a small amount of ferrite, bainite, and retained austenite are allowed at the weld position. During the thermal expansion simulation process, the heating temperature and method are as follows: Temperature requirement: above 930℃ (usually 930℃-950℃); Heating method: furnace heating; Gas pressure: the gas pressure during the thermal expansion molding process must be ≥50MPa; Pressure increase rate: the pressure increase rate must be >10MPa / S; Holding and quenching time: the holding and quenching time must meet the following requirements for different material thicknesses: 1.0mm-1.2mm: 5s-8s; 1.2mm-1.5mm: 8s-10s; 1.5mm-1.8mm: 10s-12s; 1.8mm-2.2mm: 12s-15s; 2.2mm-3mm: 15s-18s.

[0072] For parameter combinations that yielded satisfactory simulation results, the optimal parameters were obtained through clustering and used in the fabrication of automotive A-pillar reinforcement tubes, thereby improving the yield rate of automotive A-pillar reinforcement tubes.

[0073] Figure 8 This is a schematic diagram of a simulation device for a car A-pillar reinforcement tube provided in an embodiment of this application. Figure 8 As shown, the simulation device for the aforementioned automotive A-pillar reinforcement tube includes: The acquisition module 802 is used to acquire the selection range of bending parameters, the selection range of preforming parameters, and the selection range of thermal expansion parameters for the automotive A-pillar reinforcing tube in the bending simulation process, the preforming simulation process, and the thermal expansion simulation process, respectively. The selection module 804 is used to select multiple sets of bending parameters, preforming parameters, and hot air expansion parameters from the bending parameter selection range, the preforming parameter selection range, and the hot air expansion parameter selection range. The simulation module 806 is used to perform a bending simulation process on the car A-pillar reinforcing tube using the bending parameters, a preforming simulation process on the car A-pillar reinforcing tube using the preforming parameters, and a thermal expansion simulation process on the car A-pillar reinforcing tube using the thermal expansion parameters for each set of parameters, in the order of the simulation process. The output module 808 is used to output the simulation results of the car A-pillar reinforcement tube after the simulation process is completed; The determination module 810 is used to determine the target parameter combination from multiple sets of parameter combinations based on the simulation results, for use in preparing the automotive A-pillar reinforcement tube.

[0074] This application can be used to determine the optimal manufacturing parameters for automotive A-pillar reinforcing tubes. By selecting the optimal manufacturing parameters, the yield of automotive A-pillar reinforcing tubes can be improved.

[0075] To determine the optimal manufacturing parameters, this application proposes a process simulation method. By selecting multiple combinations of manufacturing parameters within a preset parameter range, process simulation is performed for each parameter combination to determine whether the automotive A-pillar reinforcing tube is qualified in the simulation results, thereby obtaining the optimal parameter combination.

[0076] In this application, the process simulation includes pipe bending simulation, preforming simulation, and thermal expansion simulation. The parameter selection range includes the selection ranges for pipe bending parameters, preforming parameters, and thermal expansion parameters. Multiple parameters are selected from different parameter selection ranges, and these parameters are combined to obtain multiple parameter combinations. For example, if 10 parameters are selected for the pipe bending parameter selection range, 20 parameters for the preforming parameter selection range, and 10 parameters for the thermal expansion parameter selection range, then the total number of parameter combinations is 10 * 20 * 10 = 2000.

[0077] Choosing more parameters results in more parameter combinations. To reduce the number of parameter combinations, one can first fix the preforming and thermal expansion parameters, select multiple parameters from the bending parameter selection range, and perform a simulation to obtain the optimal bending parameters. Then, using the optimal bending parameters, select multiple parameters from the preforming parameters, fix the thermal expansion parameters, perform a simulation to obtain the optimal preforming parameters, and finally select multiple parameters from the thermal expansion parameters for a simulation. This approach significantly reduces the number of parameter combinations. For example, if the bending parameter selection range has 10 parameters, the preforming parameter selection range has 20 parameters, and the thermal expansion parameter selection range has 10 parameters, by first determining the optimal bending parameters, then the optimal preforming parameters, and finally the optimal thermal expansion parameters, the total number of parameter combinations becomes 10 + 20 + 10 = 40.

[0078] For determining the selection ranges of bending parameters, preforming parameters, and thermal expansion parameters, this application sets different ranges based on different materials. Furthermore, the size of the parameter selection range will also be adjusted according to the complexity of the A-pillar reinforcing tube structure in the simulation process. The more complex the structure of the A-pillar reinforcing tube, the larger the parameter selection range will be.

[0079] The process of simulating the manufacturing process of an automotive A-pillar reinforcement tube after selecting the parameter combination. The automotive A-pillar reinforcement tube is a component on a car, typically located in the A-pillars on the front left and right sides of the vehicle, providing good support and resistance to deformation upon impact. Simulating the manufacturing process of the automotive A-pillar reinforcement tube involves using computer software to simulate the manufacturing process from raw materials to the final product in a virtual environment. This eliminates the need for actual manufacturing and allows for the detection of potential anomalies during the manufacturing process, such as cracking, breakage, tension, and compression. This prevents the production of substandard products and the waste of human and financial resources by manufacturing the automotive A-pillar reinforcement tube without real data.

[0080] In this application, when performing process simulation for the automotive A-pillar reinforcing tube, since a thermal expansion process is involved, software such as AutoForm, Simufact Forming, or PAM-STAMP can be used. The modules in these software programs can support the microstructure transformation and deformation simulation required for the thermal expansion process.

[0081] If the process simulation of the A-pillar reinforcement tube of an automobile is to be performed, this application includes multiple simulation steps. The main simulation steps include: tube bending simulation step, preforming simulation step and thermal expansion simulation step. Different steps are executed in sequence. After all simulation steps are completed, the simulation results can be output.

[0082] Furthermore, this application can also output the simulation results of each simulation process for the automotive A-pillar reinforcement tube. For example, the simulation results of each simulation process can be output after all simulation processes are completed. Alternatively, the simulation results of a single simulation process can be output after that process is completed.

[0083] After judging the simulation results of the previous process, if the simulation results are qualified, the simulation will continue to the next process. If the simulation results of the previous process are unqualified, the process simulation can be paused, and the process simulation can continue after adjusting the parameters.

[0084] Alternatively, to examine the simulation results of the next process under incorrect parameters, the simulation of the next process can be continued even if the simulation results of the previous process are unsatisfactory, to observe further changes in the simulation results. During this process, erroneous simulation results from the previous process can be marked, and the aspects of the simulation results in the next process that might be affected by these erroneous results can be analyzed. Furthermore, after proceeding with the next simulation process, it can be determined which aspects of the simulation results are abnormal. By analyzing the erroneous simulation results from the previous process and comparing them with the predicted erroneous simulation results for the next process, it can be determined whether the impact of the erroneous simulation results from the previous process on the simulation results of the next process exceeded or fell short of expectations.

[0085] After all the simulation processes are completed, the simulation results of the car A-pillar reinforcement tube can be obtained.

[0086] Based on whether the simulation results are normal, the target parameter combination can be selected from multiple parameter combinations. The target parameter combination indicates that if the A-column reinforcing tube is prepared according to the combination, it is more likely to obtain a qualified product.

[0087] The solution provided in this application embodiment obtains the selection ranges of bending parameters, preforming parameters, and thermal expansion parameters for the automotive A-pillar reinforcement tube in the bending simulation process, preforming simulation process, and thermal expansion simulation process, respectively; selects multiple sets of bending parameters, preforming parameters, and thermal expansion parameter combinations from the selected ranges; for each set of parameter combinations, according to the simulation process sequence, the bending parameters are used to perform the bending simulation process on the automotive A-pillar reinforcement tube, and the preforming parameters are used to perform the thermal expansion simulation process on the automotive A-pillar reinforcement tube. The process involves a pre-forming simulation of the A-pillar reinforcement tube and a thermal expansion simulation of the A-pillar reinforcement tube using the aforementioned thermal expansion parameters. After completing the simulation process, the simulation results of the A-pillar reinforcement tube are output. Based on the simulation results, a target parameter combination is determined from multiple parameter combinations to create a scheme for manufacturing the A-pillar reinforcement tube. This allows for the selection of different parameter combinations for simulation of the A-pillar reinforcement tube, and the determination of the optimal target parameter combination based on the simulation results. This solves the problem of low yield caused by low accuracy of parameters in manufacturing the A-pillar reinforcement tube.

[0088] For other examples of this embodiment, please refer to the examples above, which will not be repeated here.

[0089] like Figure 9 As shown in the figure, this application provides an electronic device, including a processor 111, a communication interface 112, a memory 113, and a communication bus 114, wherein the processor 111, the communication interface 112, and the memory 113 communicate with each other through the communication bus 114. Memory 113 is used to store computer programs; In one embodiment of this application, the processor 111, when executing the program stored in the memory 113, implements the method for determining the preparation parameters of the automotive A-pillar reinforcing tube provided in any of the foregoing method embodiments.

[0090] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the method for determining the preparation parameters of the automotive A-pillar reinforcing tube as provided in any of the foregoing method embodiments.

[0091] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0092] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0093] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0094] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for determining the manufacturing parameters of an automotive A-pillar reinforcing tube, characterized in that, include: The selection ranges of bending parameters, preforming parameters, and thermal expansion parameters for the automotive A-pillar reinforcement tube were obtained in the bending simulation process, preforming simulation process, and thermal expansion simulation process, respectively. Multiple sets of bending parameters, preforming parameters, and hot air expansion parameters can be selected from the bending parameter selection range, the preforming parameter selection range, and the hot air expansion parameter selection range. For each set of parameters, in the order of the simulation process, the bending parameters are used to perform the bending simulation process for the car A-pillar reinforcing tube, the preforming parameters are used to perform the preforming simulation process for the car A-pillar reinforcing tube, and the thermal expansion parameters are used to perform the thermal expansion simulation process for the car A-pillar reinforcing tube. After completing the simulation process, output the simulation results of the car A-pillar reinforcement tube; Based on the simulation results, a target parameter combination is determined from multiple parameter combinations to be used in the fabrication of the automotive A-pillar reinforcement tube.

2. The method according to claim 1, characterized in that, Based on the simulation results, the target parameter combination determined from the multiple sets of parameter combinations includes: Determine all parameter combinations corresponding to the qualified simulation results in the simulation results of the simulation process; According to the simulation parameters in the preset selection conditions, the combination with the smallest simulation parameters is selected from all parameter combinations as the target parameter combination.

3. The method according to claim 1, characterized in that, The range of bending parameters includes the range of bending direction and bending angle. The process of simulating bending of the automotive A-pillar reinforcing tube using the bending parameters includes: Based on the bending direction and bending angle in the bending parameters, determine the sub-bending direction and sub-bending angle of each bending operation when performing multiple bending operations on the automotive A-pillar reinforcing tube. Each bending operation is performed sequentially to bend the car A-pillar reinforcing tube to a specified angle; Based on the bending pipe structural parameters in the bending pipe parameters, determine whether the bent automotive A-pillar reinforcement pipe is qualified.

4. The method according to claim 3, characterized in that, The range of preforming parameters includes the range of preforming simulation parameters. The preforming simulation process for the automotive A-pillar reinforcing tube using the preforming parameters includes: Based on the preforming simulation parameters in the preforming parameters, determine the preforming mold used for preforming simulation; The shape of the bent car A-pillar reinforcing tube is adjusted using the pre-forming mold to obtain a pre-formed simulation structure; Based on the preforming structural parameters in the preforming parameters, determine whether the preformed automotive A-pillar reinforcing tube is qualified.

5. The method according to claim 4, characterized in that, The range of hot gas expansion parameters includes the selection range of preset boost rate, preset gas pressure, expansion parameters, and pressure holding quenching time. The process of simulating the hot gas expansion of the automotive A-pillar reinforcing tube using the hot gas expansion parameters includes: Based on the thermal expansion simulation parameters in the thermal expansion parameters, the simulation heating furnace is controlled to heat to the preset temperature range at a heating rate greater than the preset pressurization rate, and the gas pressure inside the furnace is greater than the preset gas pressure. The expansion of the car A-pillar reinforcement tube is controlled according to the expansion parameters in the thermal expansion simulation parameters. Based on the thickness of the automotive A-pillar reinforcing tube, pressure holding and quenching are performed for a pressure holding and quenching time corresponding to the thickness. Based on the hot gas expansion forming parameters in the hot gas expansion parameters, determine whether the automotive A-pillar reinforcing tube that has undergone pressure holding and quenching is qualified.

6. The method according to claim 5, characterized in that, Controlling the expansion of the A-pillar reinforcement tube of the vehicle according to the expansion parameter in the thermal expansion parameters includes: Control the expansion of the car A-pillar reinforcing tube until it is in zero-distance contact with the planar area of ​​the hot air expansion mold, and the maximum distance between it and the R-angle area of ​​the hot air expansion mold is less than a preset distance.

7. The method according to claim 1, characterized in that, After completing the simulation process, the simulation results for the automotive A-pillar reinforcement tube are output, including: The qualified and unqualified simulation results from each simulation process are stored in the corresponding subfolders within the simulation process's folder. For unqualified simulation results, determine the region to which the automotive A-pillar reinforcement tube belongs; According to the region to which they belong, the corresponding region in the simulation graph of the unqualified simulation results is marked.

8. A device for determining the manufacturing parameters of an automotive A-pillar reinforcing tube, characterized in that, include: The acquisition module is used to acquire the selection range of bending parameters, preforming parameters, and thermal expansion parameters for the automotive A-pillar reinforcement tube in the bending simulation process, preforming simulation process, and thermal expansion simulation process, respectively. The selection module is used to select multiple sets of bending parameters, preforming parameters, and hot air expansion parameters from the bending parameter selection range, the preforming parameter selection range, and the hot air expansion parameter selection range. The simulation module is used to perform a bending simulation process on the car A-pillar reinforcing tube using the bending parameters, a preforming simulation process on the car A-pillar reinforcing tube using the preforming parameters, and a thermal expansion simulation process on the car A-pillar reinforcing tube using the thermal expansion parameters for each set of parameters, in the order of the simulation process. The output module is used to output the simulation results of the car A-pillar reinforcement tube after the simulation process is completed; The determination module is used to determine the target parameter combination from multiple sets of parameter combinations based on the simulation results, for the purpose of preparing the automotive A-pillar reinforcement tube.

9. An electronic device, characterized in that, include: At least one communication interface; At least one bus connected to the at least one communication interface; At least one processor connected to the at least one bus; At least one memory connected to the at least one bus, wherein the memory stores a computer program, and the processor executes the computer program to implement the method for determining the manufacturing parameters of the automotive A-pillar reinforcing tube as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The storage medium stores computer-executable instructions, which are used to execute the method for determining the preparation parameters of the automotive A-pillar reinforcing tube according to any one of claims 1 to 7 of this application.

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