Bending property parameter correction method, system, device and storage medium

Abstract

The present invention discloses a bending property parameter correction method, system, device, and storage medium, including: displaying a property parameter correction interface, the property parameter correction interface including at least a parameter correction setting area, an angle setting area, a parameter correction control, and a corrected parameter output area; determining and displaying parameter information to be corrected in response to a trigger operation on the parameter correction setting area; determining and displaying bending angle information in response to a trigger operation on the angle setting area; determining corrected parameters based on the parameter information to be corrected and the bending angle information in response to a trigger operation on the parameter correction control, and displaying the corrected parameters in the corrected parameter output area; and determining bending property parameters based on the corrected parameters. By self-learning the bending property parameters, accurate property parameter values ​​are obtained, the bending angle accuracy of the plate is improved, and the difficulty of the correction and debugging process is reduced.

Description

Technical Field

[0001] The present invention relates to the field of bending technology, and in particular to a bending property parameter correction method, system, device and storage medium. Background Art

[0002] A press brake is a common metalworking machine that can be used to process metal materials of different types and thicknesses. By adjusting the operating parameters and molds, different shapes of bends, such as V-bends and U-bends, can be achieved. The press brake uses a sophisticated control system and transmission system to achieve high-precision bending. The accuracy of the bending angle depends on the accuracy of the calculation model and input attribute parameters. Only when the input attribute parameters and the calculation model can truly reflect the physical properties of the sheet metal and the mathematical model can the high accuracy of the calculation model output be guaranteed.

[0003] Domestic and foreign scholars have conducted extensive research on computational models, proposing various analytical and computational methods to ensure that the model's calculation results approximate the actual bending behavior of physical sheet metal. The higher the approximation, the higher the accuracy of the bending results. However, if there are errors in the input attribute parameters of the computational model, the final calculation accuracy of the model will be affected. For example, if the computational model and other input attribute parameters are accurate, the bending angle error mainly comes from the input deviation of the sheet metal properties and the rack properties.

[0004] At present, for the properties of plate materials and racks, the parameter values ​​provided by the supplier are generally used as the input values ​​of the calculation model. The differences in manufacturing processes of different manufacturers will lead to differences in the properties of the same plate materials. Even for plates provided by the same manufacturer, there will be differences between different batches or different plates in the same batch. As a result, the input property parameter values ​​are roughly theoretical values, which have a certain deviation from the actual values. This means that even if the calculation model inside the controller is very accurate, the angle accuracy of the bent plate is still not high. Summary of the Invention

[0005] The embodiments of the present invention provide a bending property parameter correction method, system, device and storage medium, aiming to obtain accurate property parameter values ​​through self-learning of bending property parameters, improve the bending angle accuracy of the plate, and reduce the difficulty of the correction and debugging process.

[0006] An embodiment of the present invention provides a bending property parameter correction method for correcting parameters of plate properties and / or rack properties. The bending property parameter correction method includes:

[0007] Displaying an attribute parameter correction interface, wherein the attribute parameter correction interface includes at least a parameter correction setting area, an angle setting area, a parameter correction control, and a corrected parameter output area;

[0008] In response to a trigger operation on the parameter correction setting area, determining and displaying parameter information to be corrected;

[0009] In response to a triggering operation on the angle setting area, determining and displaying bending angle information;

[0010] In response to a trigger operation on the parameter correction control, determining the corrected parameters according to the parameter information to be corrected and the bending angle information, and displaying the corrected parameters in the corrected parameter output area;

[0011] Based on the corrected parameters, bending property parameters are determined.

[0012] Optionally, the parameter correction setting area includes at least a to-be-corrected type selection control and a to-be-corrected parameter selection control, and the step of determining and displaying the to-be-corrected parameter information in response to a triggering operation on the parameter correction setting area includes:

[0013] In response to a triggering operation on the to-be-corrected type selection control, determining and displaying the to-be-corrected type;

[0014] In response to selecting a control for the parameter to be corrected, the parameter to be corrected is determined and displayed.

[0015] Optionally, the parameter correction setting area includes at least a property control, and the step of determining and displaying the parameter information to be corrected in response to a trigger operation on the parameter correction setting area includes:

[0016] In response to a triggering operation on the property control, displaying a property selection interface;

[0017] In response to a triggering operation on the attribute selection interface, parameters to be corrected are determined and displayed.

[0018] Optionally, the bending angle information includes a preset bending angle and an actual bending angle, the angle setting area includes a preset bending angle editing box and an actual bending angle display box, and the step of determining and displaying the bending angle information in response to a triggering operation on the angle setting area includes:

[0019] In response to an editing operation on the preset bending angle edit box, displaying the preset bending angle;

[0020] After the bending machine completes the bending operation, the actual bending angle is displayed in the actual bending angle display frame.

[0021] Optionally, the bending angle information includes an actual bending angle, and the step of determining the corrected parameter based on the parameter information to be corrected and the bending angle information includes:

[0022] Determining the parameters to be corrected according to the information of the parameters to be corrected;

[0023] Obtaining a preset bending pressure formula, the actual bending angle, and the actual pressure under the current bending attribute parameters;

[0024] Calculating according to the bending pressure formula and the actual bending angle to obtain a theoretical pressure corresponding to the actual bending angle, and determining whether a difference between the theoretical pressure and the actual pressure is less than or equal to a preset threshold;

[0025] If it is less than or equal to, the parameter to be corrected is used as the corrected parameter;

[0026] If it is greater than, the parameter to be corrected is iteratively updated according to the partial derivative function of the bending downward pressure formula relative to the parameter to be corrected through gradient descent and error feedback method to obtain the updated parameter to be corrected, and the step of calculating according to the parameter to be corrected, the bending downward pressure formula and the actual bending angle to obtain the theoretical downward pressure corresponding to the actual bending angle is performed again, until the difference between the theoretical downward pressure and the actual downward pressure is less than or equal to the preset threshold value, and the updated parameter to be corrected is used as the corrected parameter.

[0027] Optionally, the attribute parameter correction interface further includes a plate parameter area, the plate parameter area including at least a plate selection control and a plate parameter setting area, and before the step of determining the corrected parameters based on the parameter information to be corrected and the bending angle information, the step further includes:

[0028] In response to a triggering operation on the plate selection control, a plate to be corrected is determined and displayed, and current parameters of the plate to be corrected are displayed in the plate parameter setting area.

[0029] Optionally, the step of determining bending property parameters based on the corrected parameters includes:

[0030] In response to a triggering operation on the parameter correction control, the current parameters are updated based on the corrected parameters, and the property parameters of the plate to be corrected are determined.

[0031] In addition, in order to achieve the above-mentioned purpose, the present invention also provides a bending property parameter correction system for correcting parameters of plate properties and / or rack properties, and the bending property parameter correction system includes:

[0032] A display module, configured to display an attribute parameter correction interface, wherein the attribute parameter correction interface includes at least a parameter correction setting area, an angle setting area, a parameter correction control, and a corrected parameter output area;

[0033] A first response module, configured to determine and display parameter information to be corrected in response to a trigger operation on the parameter correction setting area;

[0034] a second response module, configured to determine and display bending angle information in response to a triggering operation on the angle setting area;

[0035] a third response module, configured to respond to a triggering operation on the parameter correction control, determine the corrected parameters according to the parameter information to be corrected and the bending angle information, and display the corrected parameters in the corrected parameter output area;

[0036] The parameter correction determination module is used to determine the bending property parameters based on the corrected parameters.

[0037] In addition, in order to achieve the above-mentioned purpose, the present invention also provides a bending property parameter correction device, which includes: a memory, a processor, and a bending property parameter correction program stored on the memory and running on the processor. When the bending property parameter correction program is executed by the processor, the steps of the above-mentioned bending property parameter correction method are implemented.

[0038] In addition, to achieve the above-mentioned purpose, the present invention also provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores a bending property parameter correction program, and when the processor executes the bending property parameter correction program, the steps of the above-mentioned bending property parameter correction method are implemented.

[0039] The present invention provides a technical solution for a bending property parameter correction method, system, device and storage medium, which provides a property parameter correction interface to correct the parameters of the plate properties and / or rack properties that affect the bending angle accuracy. By operating the property parameter correction interface, the parameter information to be corrected is first determined, and then a bending experiment is performed using the corresponding material to determine the bending angle information. Then, based on the parameter information to be corrected and the bending angle information, the corrected parameters are determined. Finally, the current parameters are updated according to the corrected parameters to obtain the bending property parameters. The present invention uses a feedback mechanism to iteratively calculate and update the plate properties and / or rack properties according to the deviation between the bending result and the expectation, and can obtain accurate property parameter values. This solves the problem of deviation in the bending angle caused by the difference between the input theoretical value of the bending property parameter and the actual physical property, improves the bending angle accuracy of the plate, improves the usability and friendliness of the use process, and reduces the difficulty of the correction and debugging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic diagram of the process of the first embodiment of the bending property parameter correction method of the present invention;

[0041] Figure 2 Schematic diagram of the flow of a fifth embodiment of the bending property parameter correction method of the present invention;

[0042] Figure 3 This is a schematic diagram of the attribute parameter correction interface of the present invention;

[0043] Figure 4 This is a functional module diagram of the bending property parameter correction system of the present invention;

[0044] Figure 5 Schematic diagram of the hardware operating environment involved in the embodiments of the present invention.

[0045] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. The above-mentioned drawings are only an embodiment diagram, not the entire invention. DETAILED DESCRIPTION

[0046] Press brakes are a common type of metalworking equipment used to process various metal types and thicknesses. By adjusting operating parameters and molds, various bend shapes, such as V-bends and U-bends, can be achieved. Press brakes utilize sophisticated control and transmission systems, enabling high-precision bending, thereby ensuring the quality and accuracy of the processed parts. Press brakes can be categorized by processing requirements and targets, including manual, hydraulic, CNC, and contour bending machines. CNC bending machines, with automated control through numerical control programming, are capable of bending various metal shapes with high precision, making them suitable for high-volume, high-quality bending production. The precise calculation of bending angles depends on many factors. For example, in a V-bend, the precise calculation and control of the slider's downward pressure before unloading, as well as the prediction and compensation of the springback angle after unloading, are influenced by numerous factors and parameters. These include the dimensions and appearance of the upper and lower molds, the amount of downward pressure, deformation of the frame, material springback, and differences in material properties between batches.

[0047] Therefore, the accuracy of the bending angle depends on the accuracy of the calculation model and the input attribute parameters. Only when the input attribute parameters and the calculation model can truly reflect the sheet material properties and mathematical models in the physical world can the high accuracy of the calculation model output results be guaranteed. Domestic and foreign scholars have conducted extensive research on the calculation model and proposed various analysis and calculation methods to ensure the accuracy and precision of the calculation model, so that the model calculation results are as close as possible to the bending laws of the actual physical sheet material. The higher the degree of approximation, the higher the accuracy of the bending sheet material. However, if there are errors in the input attribute parameters of the calculation model, it will also affect the final calculation accuracy of the model.

[0048] At present, it is difficult to accurately determine the plate properties and rack properties in the input attribute parameters of the calculation model. Generally, the parameter values ​​provided by the supplier are used as the input values ​​of the calculation model. However, the differences in manufacturing processes of different manufacturers will lead to differences in the properties of the same plate. Even for plates provided by the same manufacturer, there will be differences between different batches or different plates in the same batch, resulting in the input attribute parameter values ​​being approximate theoretical values, which have a certain deviation from the actual values. As a result, even if the calculation model inside the controller is very accurate, the angle accuracy of the bent plate is still not high, resulting in a certain deviation between the bending angle of the plate and the preset angle.

[0049] To address this issue, trial folding and adjustment methods are generally used. First, a trial fold is performed to observe whether the bending angle is consistent with the expectation. If there is a deviation, the angle error is compensated or other parameters are adjusted according to the size and direction of the deviation. Through multiple angle corrections and adjustments, the angle difference between the sheet metal bending angle and the preset angle is gradually reduced until the bending angle meets the accuracy requirements. However, when it is necessary to change the bending angle, the thickness and width of the bending material, change other materials, or replace the upper and lower molds, it is necessary to perform corrections and adjustments in this way again. This process is time-consuming, labor-intensive, wastes materials, and is very user-friendly.

[0050] In response to the above problems, the present invention proposes a bending property parameter correction method for correcting the parameters of plate properties and / or frame properties, mainly comprising: displaying a property parameter correction interface, the property parameter correction interface at least including a parameter correction setting area, an angle setting area, a parameter correction control, and a corrected parameter output area; in response to a trigger operation on the parameter correction setting area, determining and displaying the parameter information to be corrected; in response to a trigger operation on the angle setting area, determining and displaying the bending angle information; in response to a trigger operation on the parameter correction control, determining the corrected parameters according to the parameter information to be corrected and the bending angle information, and displaying the corrected parameters in the corrected parameter output area; and determining the bending property parameters based on the corrected parameters.

[0051] Compared to the related art which uses the default parameters, which are roughly theoretical values, as the bending property parameters, resulting in low bending angle accuracy, and thus requiring multiple trial bends to adjust and correct the angle error according to the angle error, the present invention provides a bending property parameter correction method. By operating the property parameter correction interface, the parameter information to be corrected is first determined, and then the corresponding material is used to perform a bending experiment to determine the bending angle information. Then, based on the parameter information to be corrected and the bending angle information, the corrected parameters are determined. Finally, the current parameters are updated according to the corrected parameters to obtain the bending property parameters. The present invention uses a feedback mechanism to iteratively calculate and update the plate properties and / or rack properties according to the deviation between the bending result and the expectation, and can obtain accurate property parameter values. This solves the problem of deviation in the bending angle caused by the difference between the input theoretical value of the bending property parameter and the actual physical property, improves the bending angle accuracy of the plate, improves the usability and friendliness of the use process, and reduces the difficulty of the correction and debugging process.

[0052] To better understand the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0053] like Figure 1 As shown, in a first embodiment of the present invention, the bending property parameter correction method of the present invention is applied to a bending property parameter correction device. The bending property parameter correction device can be a CNC bending device, an industrial computer, a mobile phone, or other terminal device with a bending property parameter correction function, and the bending property parameter correction device is installed with a bending property parameter correction application. The bending property parameter correction application can be used to achieve the correction of the bending property parameters. Specifically, the bending property parameter correction method of the present invention includes the following steps:

[0054] Step S110 , displaying an attribute parameter correction interface, wherein the attribute parameter correction interface at least includes a parameter correction setting area, an angle setting area, a parameter correction control, and a corrected parameter output area.

[0055] In this embodiment, the attribute parameter correction interface of the present invention refers to Figure 3 .

[0056] The parameter correction setting area is used to set the parameter information to be corrected, which includes the type to be corrected and the parameters to be corrected. Among them, the type to be corrected includes plate properties and frame properties. Since the plate properties that affect bending accuracy mainly include elastic modulus, processing strain hardening index, tensile strength and plate thickness, and the frame properties that affect bending accuracy mainly include frame strength and frame stiffness, therefore, when the type to be corrected is determined to be plate properties, the parameters to be corrected include at least the elastic modulus, processing strain hardening index, tensile strength and plate thickness under the plate properties; when the type to be corrected is determined to be frame properties, the parameters to be corrected include at least the frame strength and frame stiffness.

[0057] The Angle Settings area is used to set the bending angle information, which includes the preset bending angle and the actual bending angle. The preset bending angle is the bending angle set before the plate is tested, while the actual bending angle is the angle measured after the test bend. Specifically, you can perform one or more test bends to calibrate the parameters to be calibrated, depending on your needs.

[0058] Parameter correction controls (refer to Figure 3 The "plate parameter correction" control shown) is used to calculate the corrected parameters, and the corrected parameters are obtained by triggering the parameter correction control to perform parameter iterative calculation.

[0059] The corrected parameter output area is used to display the corrected parameters. The displayed corrected parameters can be automatically updated to the parameter values ​​of the current bending properties inside the controller, or they can be used only as display values ​​for user reference. The user can choose whether to update the corrected parameters to the parameter values ​​of the current bending properties inside the controller based on the corrected parameters displayed in the corrected parameter output area.

[0060] In this embodiment, when the bending property parameters need to be corrected, the property parameter correction interface is displayed, and the bending property parameter correction is achieved by adjusting the property parameter correction interface and cooperating with the underlying control logic.

[0061] Step S120 : In response to a triggering operation on the parameter correction setting area, determining and displaying parameter information to be corrected.

[0062] In this embodiment, triggering the parameter correction setting area of ​​the attribute parameter correction interface directly displays the parameter information to be corrected. Alternatively, triggering the parameter correction setting area of ​​the attribute parameter correction interface directly redirects to the attribute selection interface. The attribute selection interface displays various attribute parameter selection options. By clicking on the corresponding attribute parameter, the clicked attribute parameter becomes the parameter to be corrected. The specific implementation process will be described in detail in the subsequent embodiments and will not be further elaborated here.

[0063] Step S130 : determining and displaying bending angle information in response to a triggering operation on the angle setting area.

[0064] In this embodiment, after determining the parameters to be corrected, the angle setting is performed by triggering the angle setting area to obtain the bending angle information. Alternatively, before determining the parameters to be corrected, the bending angle information is first obtained by triggering the angle setting area. The bending angle information includes a preset bending angle and an actual bending angle. The preset bending angle and the actual bending angle can be displayed on the same display interface, or after setting the preset bending angle by triggering the angle setting area, the actual bending angle interface is jumped to and the actual bending angle is displayed in the actual bending angle interface. The specific implementation process is referred to the subsequent embodiments and will not be repeated here.

[0065] Step S140 , in response to a triggering operation on the parameter correction control, determining the corrected parameters according to the parameter information to be corrected and the bending angle information, and displaying the corrected parameters in the corrected parameter output area.

[0066] In this embodiment, after determining the parameter information to be corrected and the bending angle information, the corrected parameters are calculated. The corrected parameters correspond to the parameter information to be corrected. For example, if the parameter information to be corrected is the elastic modulus, work strain hardening exponent, tensile strength, and plate thickness of the plate material, the corrected parameters are the updated parameter values ​​obtained by iteratively calculating the elastic modulus, work strain hardening exponent, tensile strength, and plate thickness. The specific implementation process is described in the subsequent embodiments and will not be repeated here.

[0067] Step S150: determining bending property parameters based on the corrected parameters.

[0068] In this embodiment, after obtaining the corrected parameters, all of them can be updated into the controller as bending property parameters, or according to actual needs, required corrected parameters can be updated into the controller to partially update the bending property parameters.

[0069] According to the above technical solution, this embodiment provides a bending property parameter correction method and a property parameter correction interface to correct the parameters of the plate properties and / or rack properties that affect the bending angle accuracy. By operating the property parameter correction interface, after the plate is trial-bent, the plate properties and / or rack properties are iteratively calculated and updated based on the deviation between the bending result and the expected value, and accurate property parameter values ​​can be obtained, thereby improving the bending angle accuracy of the plate, improving the usability and friendliness of the use process, and reducing the difficulty of the correction and debugging process.

[0070] Further, based on the first embodiment, in a second embodiment of the present invention, the parameter correction setting area includes at least a control for selecting a type to be corrected and a control for selecting a parameter to be corrected. Specifically, step S120 includes the following steps:

[0071] Step S121 : In response to a triggering operation on the to-be-corrected type selection control, determining and displaying the to-be-corrected type.

[0072] In this embodiment, the type selection control to be corrected is a selection button. Specifically, refer to Figure 3 , including the button for correcting plate parameters and the button for correcting rack parameters. Determine the type to be corrected by clicking the type selection control to be corrected in the parameter correction setting area.

[0073] Optionally, the type to be corrected selection control may also be a drop-down menu, and the type to be corrected may be determined by clicking the plate property or rack property in the drop-down menu in the parameter correction setting area.

[0074] Step S122 : In response to selecting a control for the parameter to be calibrated, determining and displaying the parameter to be calibrated.

[0075] In this embodiment, the parameter selection control to be corrected is a selection button. By clicking the parameter selection control in the parameter correction setting area, the parameter to be corrected is determined. Specifically, the correction parameter selection control includes, but is not limited to, an elastic modulus selection control, a work strain hardening index selection control, a tensile strength selection control, a plate thickness selection control, a frame strength selection control, or a frame stiffness selection control.

[0076] Optionally, after determining the type to be corrected, only parameters within that type can be selected. For example, after selecting Plate Properties as the type to be corrected, the Elastic Modulus, Work Strain Hardening Index, Tensile Strength, and Plate Thickness selection controls under Plate Properties become selectable, while the Rack Strength and Rack Stiffness selection controls under Rack Properties become unselectable. This approach prevents misoperation, provides guidance throughout the correction process, and improves ease of use and operability.

[0077] According to the above technical solution, this embodiment can determine the parameters to be corrected by operating the parameter correction setting area, providing a basis for the iterative calculation of subsequent parameters.

[0078] Further, based on the first embodiment or the second embodiment, in a third embodiment of the present invention, the parameter correction setting area includes at least a property control. Specifically, step S120 includes the following steps:

[0079] Step S123, in response to the triggering operation on the attribute control, displaying an attribute selection interface;

[0080] In this embodiment, by clicking on the property control in the parameter correction setting area, the attribute selection interface is jumped to display. Specifically, a single property control is set in the parameter correction setting area, and the property control only serves as a button to trigger the jump to the attribute selection interface. Clicking on the property control in the parameter correction setting area jumps to display the attribute selection interface. Alternatively, a correction plate parameter button and a correction rack parameter button can be set in the parameter correction setting area as property controls to trigger the jump to display the attribute selection interface. When the correction plate parameter button or the correction rack parameter button is clicked to determine the type to be corrected, the attribute selection interface is jumped to display. Alternatively, a drop-down menu can be set in the parameter correction setting area. By clicking on the plate property or rack property in the drop-down menu in the parameter correction setting area, the type to be corrected is determined and the attribute selection interface is jumped to display.

[0081] Step S124 : In response to the triggering operation on the attribute selection interface, determining and displaying the parameters to be corrected.

[0082] In this embodiment, when the attribute control only serves as a button for triggering a jump to the attribute selection interface, the attribute selection interface includes a control for selecting the type to be corrected and a control for selecting the parameters to be corrected. The process of determining and displaying the parameters to be corrected by triggering the attribute selection interface refers to the second embodiment above and will not be repeated here.

[0083] Optionally, the property selection interface includes a plate parameter selection interface and a rack parameter selection interface. Click the "Correct Plate Parameters" button to jump to the plate parameter selection interface. The plate parameter selection interface has, but is not limited to, elastic modulus selection controls, processing strain hardening index selection controls, tensile strength selection controls, and plate thickness selection controls. By operating the plate parameter selection interface, the parameters to be corrected are determined. Click the "Correct Rack Parameters" button to jump to the rack parameter selection interface. The rack parameter selection interface has, but is not limited to, rack strength selection controls and rack stiffness selection controls. By operating the rack parameter selection interface, the parameters to be corrected are determined.

[0084] According to the above technical solution, this embodiment can determine the parameters to be corrected by operating the parameter correction setting area, providing a basis for the iterative calculation of subsequent parameters.

[0085] Furthermore, based on any of the first to third embodiments, in a fourth embodiment of the present invention, the bending angle information includes a preset bending angle and an actual bending angle, and the angle setting area includes a preset bending angle edit box and an actual bending angle display box. Specifically, step S130 includes the following steps:

[0086] Step S131: In response to an editing operation on the preset bending angle editing box, display the preset bending angle.

[0087] Step S132: After the bending machine completes the bending operation, the actual bending angle is displayed in the actual bending angle display frame.

[0088] In this embodiment, by editing the preset bending angle editing box, a trial bending angle requirement is issued to the bending machine, and then the corresponding plate material is used to carry out a bending experiment on the machine. The controller uses the parameter values ​​of the current plate properties to calculate the control variables such as the bending pressure amount, and performs bending. After the bending operation is completed, the actual bending angle is measured manually, or the automatic angle photoelectric testing equipment is used to automatically measure the actual bending angle, and the actual bending angle is displayed in the actual bending angle display box.

[0089] In general, a single trial bend can be used to update the bending property parameters to ensure high bending accuracy. In order to make the corrected parameters universal and generalized, the trial bend angle can be selected within the bending range and concentrated near the commonly used bending angles. For example, when the bending angle range allowed by the bending machine is [88°, 180°], 120° can be selected as the preset bending angle. In addition, in order to avoid the necessary relationship between the corrected parameters and the current angle, multiple trial bends can be performed as needed. For example, refer to Figure 3 Here, the plate is folded three times. For the first folding test, the bending angle (i.e., the preset bending angle) is set to 90° in the angle setting area. Then, the corresponding plate material is used for the bending experiment on the machine. The controller uses the parameter values ​​of the current plate properties to calculate the control variables such as the bending pressure and performs the bending. After the bending operation is completed, the actual angle (i.e., the actual bending angle) obtained by measurement is 95°. Then, the above steps are repeated, and the bending angle (i.e., the preset bending angle) is set to 120° and 150° as the second and third folding tests, respectively. The corresponding actual angles (i.e., the actual bending angle) are 123° and 154°, respectively.

[0090] Through the above technical solution, this embodiment can provide data for the iterative calculation of subsequent parameters, and can intuitively reflect the error of the bending angle under the current bending attribute parameters. The user can analyze the size of the angle error and choose whether to correct the bending attribute parameters, making the interaction process more flexible.

[0091] The accuracy of the bending angle is related to many factors. For example, when bending a sheet metal sheet at a set angle, the slide's depth must be controlled so that the upper die attached to the slide bends the sheet metal to a certain angle plus the springback angle when the upper die reaches a certain position. This allows the workpiece to rebound to the set angle with high precision after the slide returns. The amount of pressure before unloading controls the slide's depth.

[0092] Further, refer to Figure 2 Based on any of the above embodiments, in a fifth embodiment of the present invention, the bending angle information includes the actual bending angle. Step S140 includes the following steps:

[0093] Step S141: Determine the parameters to be corrected according to the information of the parameters to be corrected.

[0094] Step S142, obtaining a preset bending pressure formula, the actual bending angle, and the actual pressure under the current bending attribute parameters;

[0095] In this embodiment, the preset bending pressure formula is a functional relationship between the pressure and the material properties and the frame properties, which can be specifically expressed as:

[0096] Y=f(E,T,σ b ,n,α)+g(S,D,F)

[0097] =f(E′,T′,σ′ b ,n′,α r )+g(S′,D′,F′)

[0098] In the above formula, respectively represent the relationship between the preset material properties and rack properties and the corrected material properties and rack properties, where

[0099] Y: is the amount of downward pressure;

[0100] E: initial elastic modulus, E′: corrected elastic modulus;

[0101] T: initial plate thickness, T′: corrected plate thickness;

[0102] σ b : Initial tensile strength, σ′ b : Corrected tensile strength;

[0103] n: initial strain hardening index, n′: corrected strain hardening index;

[0104] α: preset bending angle, α r : actual bending angle;

[0105] S: preset rack strength, S'; rack strength after correction

[0106] D: Preset frame stiffness (percentage), D'; Corrected frame strength

[0107] F: preset bending force, F′: frame strength after correction.

[0108] The actual pressure under the current bending property parameters is the pressure output by the bending machine when the bending machine tries to bend the actual bending angle. Specifically, the actual pressure can be understood as the pressure calculated according to the bending pressure formula based on the current material property parameters, frame property parameters and preset bending angle α, that is, the actual pressure Y R .

[0109] Y R =f(E,T,σ b ,n,α)+g(S,D,F)

[0110] Step S143: Calculate according to the bending pressure formula and the actual bending angle to obtain a theoretical pressure corresponding to the actual bending angle, and determine whether the difference between the theoretical pressure and the actual pressure is less than or equal to a preset threshold.

[0111] In this embodiment, the actual bending angle α is obtained by performing a trial bend using the initial plate properties and frame properties. r , the actual bending angle α r Consider it as the ideal bending angle at that time, substitute it into the bending pressure formula to calculate the theoretical pressure Y at the actual bending angle. T :

[0112] Y T =f(E,T,σ b ,n,α r )+g(S,D,F)

[0113] If the difference between the theoretical pressing amount and the actual pressing amount is less than or equal to the preset threshold, step S144 is executed to use the parameter to be corrected as the corrected parameter.

[0114] If the difference between the theoretical downward pressure and the actual downward pressure is greater than or equal to the preset threshold, step S145 is executed. According to the partial derivative function of the bending downward pressure formula relative to the parameter to be corrected, the parameter to be corrected is iteratively updated through gradient descent and error feedback method to obtain the updated parameter to be corrected, and step S143 is executed again until the difference between the theoretical downward pressure and the actual downward pressure is less than or equal to the preset threshold, and the updated parameter to be corrected is used as the corrected parameter.

[0115] In this embodiment, the preset threshold is a manually set pressure error value, which is used to determine whether the bending property parameters need to be corrected. A large difference between the theoretical pressure and the actual pressure indicates that the sheet material property parameters or the frame property parameters are significantly deviated from the actual value, resulting in low bending accuracy.

[0116] The frame properties that affect bending quality primarily include frame strength, frame stiffness, and bending force. Frame properties primarily reflect the compressive deformation of the frame under high bending force. When the bending force is low, the impact of these properties is negligible. Therefore, in this embodiment, narrower sheet materials can be used to calibrate the material property parameters. When further calibration is required, a wider sheet material of the same material and thickness can be used to calibrate the frame property parameters.

[0117] When using a narrower plate to calibrate the material property parameters, the required bending force is relatively small due to the narrowness of the plate being tested, and the frame contraction is not obvious. In this case, it can be considered that the error in the frame property parameters has a negligible impact on the material property parameter correction calculation. In other words, if there is a large error in the bending angle, the error is caused by inaccurate plate property parameters. Therefore, in this case, when calibrating the parameters to be corrected for the plate properties, the bending force formula can be expressed as:

[0118] Y=f(E,T,σ b ,f,α)=f(E′,T′,σ b ′,n′,α r )

[0119] According to the partial derivative function of the bending pressure formula with respect to the parameter to be corrected, the parameter to be corrected is substituted into the partial derivative function, the partial derivative value is calculated, and then the parameter to be corrected is iteratively updated through the gradient descent and error feedback method. The parameter to be corrected can be the parameters of all attributes of the plate properties, or some of them can be used as the parameters to be corrected according to requirements, which is not limited here. In this embodiment, parameter correction of all attributes is used as an example for explanation. The gradient descent and error feedback method is as follows:

[0120]

[0121] In the above formula, E i , T i ,σb i , n i The elastic modulus, plate thickness, tensile strength and working strain hardening exponent of the plate properties updated at that time;

[0122] E i―1 , T i―1 ,σb i―1 , ni―1 are the elastic modulus, plate thickness, tensile strength and work strain hardening exponent of the last plate properties;

[0123] ΔY i―1 The difference between the theoretical downward pressure calculated last time and the actual downward pressure;

[0124] is the partial derivative function of the bending pressure formula with respect to the elastic modulus, plate thickness, tensile strength and work strain hardening exponent of the plate properties;

[0125] ΔE, ΔT, Δσb, and Δn are the updating steps of the plate properties, namely, elastic modulus, plate thickness, tensile strength, and work strain hardening exponent.

[0126] After updating the plate attribute parameters through gradient descent and error feedback method, continue to calculate the theoretical pressure Y Ti and the actual pressure Y R The difference:

[0127]

[0128] Repeat the above process until the difference between the theoretical pressing amount and the actual pressing amount is less than or equal to the preset threshold, and the iteration ends. At this time, the updated parameters to be corrected are more suitable for the current plate, and the updated correction parameters are used as the corrected parameters.

[0129] Optionally, when the rack properties need to be corrected, first use a plate with a narrower width to correct the plate properties according to the above method, use the corrected parameters to update the plate properties, and then use the same material with the same thickness but a wider width to correct the parameters of the rack properties to calculate the rack properties that are closer to the actual properties. After the plate properties are corrected, if there is a large error in the bending angle, the error is caused by inaccurate rack property parameters. In addition, when the mold parameters are determined, the bending force F can be regarded as only related to the parameters of the plate properties, namely the plate bending width B, the tensile strength σ b and the plate thickness T, at this time, the bending force F can be expressed as:

[0130] F=F(B,σ b ,T)

[0131] Since the bending width B of the plate can be measured on site, a more accurate actual value can be obtained, and the tensile strength σ bThe plate thickness T has already been corrected during the plate property correction process. Therefore, when correcting the frame property parameters to be corrected, only the frame strength S and frame stiffness D need to be corrected. Specifically, the partial derivative function of the bending pressure formula with respect to the frame strength S and frame stiffness D is calculated, and then the parameters to be corrected are iteratively updated using the gradient descent and error feedback method:

[0132]

[0133] In the above formula, D i , S i , which are the frame stiffness and frame strength of the plate properties updated at that time;

[0134] D i-1 , S i-1 , respectively, are the frame stiffness and frame strength of the last plate properties;

[0135] ΔY i-1 , is the difference between the theoretical downward pressure calculated last time and the actual downward pressure;

[0136] are the partial derivative functions of the bending pressure formula relative to the frame stiffness and frame strength of the frame properties;

[0137] ΔD, ΔS are the updating steps of the frame stiffness and frame strength of the plate properties, respectively.

[0138] After updating the rack attribute parameters through the gradient descent and error feedback method, continue to calculate the difference between the theoretical downward pressure and the actual downward pressure, and repeat the above process until the difference between the theoretical downward pressure and the actual downward pressure is less than or equal to the preset threshold. The iteration ends. At this time, the updated parameters to be corrected are closer to the true value of the current machine rack attribute, and the updated correction parameters are used as the corrected parameters.

[0139] This embodiment discloses an iterative calculation method for the parameters to be corrected through the above technical solution. By associating the downward pressure with the parameters to be corrected, the correction calculation of the relevant attribute values ​​can be quickly realized, providing higher bending accuracy.

[0140] Furthermore, based on any of the above embodiments, in a sixth embodiment of the present invention, the attribute parameter correction interface further includes a plate parameter area, which includes at least a plate selection control and a plate parameter setting area. Before step S140, the following steps are further included:

[0141] Step S210 , in response to a triggering operation on the plate selection control, determining and displaying the plate to be calibrated, and displaying the current parameters of the plate to be calibrated in the plate parameter setting area.

[0142] In this embodiment, a plate parameter area is provided in the attribute parameter correction interface. By clicking the plate selection control in the plate parameter area, the plate to be corrected is selected. Specifically, the plate parameter area provides a drop-down list, in which the names of plates of various materials are set. In addition, the plate to be corrected can be determined by providing a check box. Among them, a series of plate information is stored in the bending attribute parameter correction device, and the plate information can be created and modified through an additional interface. The created plate information includes at least the plate name and the current attribute parameter values ​​of the plate. After selecting the plate to be corrected, the current parameters of the plate will be displayed in the plate parameter setting area.

[0143] Optionally, step S150 includes the following steps:

[0144] Step S151 , in response to a triggering operation on the parameter correction control, updating the current parameters based on the corrected parameters, and determining the property parameters of the plate to be corrected.

[0145] In this embodiment, after clicking the parameter correction control and confirming the corrected parameters, the corrected parameters can be directly replaced with the current attribute parameter values ​​in the plate parameter setting area. In this case, the plate parameter setting area is the corrected parameter output area. Alternatively, after clicking the parameter correction control and confirming the corrected parameters, the corrected parameters are first displayed in the corrected parameter output area. Then, according to actual needs, the current parameters of the plate can be modified through editing operations in the plate parameter setting area, replacing the current parameters with the corrected parameters.

[0146] Through the above technical solution, this embodiment can quickly understand the difference between the current parameters and the corrected parameters by intuitively displaying the plate to be corrected and the current parameters of the plate in the interface, thereby improving the ease of use and friendliness of the correction process.

[0147] The method of the present invention is described by taking the updating of the properties of stainless steel plate as an example. Figure 3 .

[0148] Step 1. Click the drop-down control in the plate parameter area, select stainless steel as the plate to be calibrated, and display the current property parameters of stainless steel in the plate parameter setting area: elastic modulus E is 21, processing strain hardening exponent n is 0.3, tensile strength σ b is 0.07, the plate thickness T is 1.5, and the bending width is 450.

[0149] Step 2. In the preset bending angle edit box in the angle setting area (i.e. Figure 3In the "Bending Angle" edit box in the , enter the trial bending angle. In order to improve the accuracy of the parameters after correction, perform three trial bends on the stainless steel, and then use the average value of the three trial bends as the final corrected parameters. For the first trial bend, enter the bending angle (i.e., the preset bending angle) as 90° in the preset bending angle edit box, and then use 450mm stainless steel for bending on the machine. The controller uses the parameter value of the current property of the stainless steel before correction for bending. After the bending is completed, measure and record the actual angle (i.e., the actual bending angle) as 95°, and then perform the second and third trial bends, and repeat the above steps. For the second and third trial folds, set the bending angle (i.e., the preset bending angle) to 120° and 150°, respectively, and obtain the corresponding actual angles (i.e., the actual bending angle) of 123° and 154°, respectively.

[0150] Step 3: In the parameter correction setting area, select the correction plate parameters (i.e. plate properties) as the correction type, and select the elastic modulus E, processing strain hardening index n, tensile strength σ b As the parameter to be calibrated this time.

[0151] Step 4. Click the parameter correction control (i.e. Figure 3 The bending property parameter correction program calculates the theoretical bending pressure according to the bending pressure formula and the actual bending angle, and uses the bending pressure formula to calculate the theoretical bending pressure relative to the elastic modulus E, processing strain hardening index n, and tensile strength σ. b The partial derivative function is used to iteratively update the above parameters to be corrected by gradient descent and error feedback method until the difference between the theoretical pressing amount and the actual pressing amount is less than or equal to 0.03. The corrected parameters are displayed in the corrected parameter output area. The corrected elastic modulus E is 18.97, the corrected work strain hardening exponent n is 0.24, and the corrected tensile strength σ is 0. b It is 0.089198. Therefore, it can be seen that there is a deviation between the initial parameter value and the corrected parameter value of the stainless steel. All the corrected parameters are replaced with the initial parameter values, or, according to actual needs, the items with larger deviations are selected for update and replacement.

[0152] The embodiment of the present invention provides an embodiment of a bending property parameter correction method. It should be noted that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order different from that shown here.

[0153] like Figure 4 As shown, the present invention provides a bending property parameter correction system for correcting parameters of plate properties and / or rack properties, including:

[0154] A display module 10 is used to display an attribute parameter correction interface, which includes at least a parameter correction setting area, an angle setting area, a parameter correction control, and a corrected parameter output area;

[0155] A first response module 20 is configured to determine and display parameter information to be corrected in response to a trigger operation on the parameter correction setting area;

[0156] A second response module 30 is configured to determine and display bending angle information in response to a trigger operation on the angle setting area;

[0157] A third response module 40 is configured to respond to a triggering operation on the parameter correction control, determine the corrected parameters according to the parameter information to be corrected and the bending angle information, and display the corrected parameters in the corrected parameter output area;

[0158] The parameter correction determination module 50 is used to determine the bending property parameters based on the corrected parameters.

[0159] The specific implementation of the bending property parameter correction system of the present invention is basically the same as the various embodiments of the bending property parameter correction method described above, and will not be repeated here.

[0160] like Figure 5 As shown, Figure 5 This is a structural diagram of the hardware operating environment of the bending property parameter correction device involved in the embodiment of the present invention. The bending property parameter correction device may include: a processor 1001, such as a CPU, a memory 1005, a user interface 1003, a network interface 1004, and a communication bus 1002. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen, an input unit such as a keyboard, and the user interface 1003 may optionally include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory, or a stable memory, such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0161] Those skilled in the art will understand that Figure 5 The structure of the bending property parameter correction device shown in the figure does not constitute a limitation on the bending property parameter correction device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0162] like Figure 5As shown, the memory 1005, which is a storage medium, may include an operating system, a network communication module, a user interface module, and a bending property parameter calibration program. The operating system is a program that manages and controls the hardware and application resources of the bending property parameter calibration device, and the operation of the bending property parameter calibration program and other applications or programs.

[0163] exist Figure 5 In the bending property parameter correction device shown, the user interface 1003 is mainly used to connect to the terminal and communicate data with the terminal; the network interface 1004 is mainly used for the background server and communicates data with the background server; the processor 1001 can be used to call the bending property parameter correction program stored in the memory 1005.

[0164] In this embodiment, the bending property parameter correction device includes: a memory 1005, a processor 1001, and a bending property parameter correction program stored in the memory and executable on the processor, wherein:

[0165] When the processor 1001 calls the bending property parameter correction program stored in the memory 1005, the following operations are performed:

[0166] Displaying an attribute parameter correction interface, wherein the attribute parameter correction interface includes at least a parameter correction setting area, an angle setting area, a parameter correction control, and a corrected parameter output area;

[0167] In response to a trigger operation on the parameter correction setting area, determining and displaying parameter information to be corrected;

[0168] In response to a triggering operation on the angle setting area, determining and displaying bending angle information;

[0169] In response to a trigger operation on the parameter correction control, determining the corrected parameters according to the parameter information to be corrected and the bending angle information, and displaying the corrected parameters in the corrected parameter output area;

[0170] Based on the corrected parameters, bending property parameters are determined.

[0171] Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium, which stores a bending property parameter correction program. When the bending property parameter correction program is executed by a processor, it implements the various steps of the bending property parameter correction method described above and can achieve the same technical effect. To avoid repetition, it will not be described here.

[0172] Since the storage medium provided in the embodiments of the present invention is used to implement the method of the embodiments of the present invention, the specific structure and variations of the storage medium are readily apparent to those skilled in the art based on the method described in the embodiments of the present invention, and thus will not be further described herein. All storage media used in the method of the embodiments of the present invention fall within the scope of protection of the present invention.

[0173] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0174] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0175] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of an application plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of an application product, and the computer application product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several operations to enable a terminal device (which can be a mobile phone, computer, server, TV, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0176] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A bending property parameter correction method for correcting parameters of plate properties and / or rack properties, characterized in that: The bending property parameter correction method includes: Displaying an attribute parameter correction interface, wherein the attribute parameter correction interface includes at least a parameter correction setting area, an angle setting area, a parameter correction control, and a corrected parameter output area; In response to a trigger operation on the parameter correction setting area, determining and displaying parameter information to be corrected, the parameter information to be corrected including a type to be corrected and parameters to be corrected. When the type to be corrected is determined to be plate properties, the parameters to be corrected include at least elastic modulus, working strain hardening index, tensile strength, and plate thickness under the plate properties; when the type to be corrected is determined to be frame properties, the parameters to be corrected include at least frame strength and frame stiffness. In response to a trigger operation on the angle setting area, determining and displaying bending angle information, the bending angle information including an actual bending angle; In response to a trigger operation on the parameter correction control, a preset bending pressure formula, the actual bending angle, and the actual pressure under the current bending attribute parameters are obtained, and a calculation is performed according to the bending pressure formula and the actual bending angle to obtain a theoretical pressure corresponding to the actual bending angle, and it is determined whether the difference between the theoretical pressure and the actual pressure is less than or equal to a preset threshold value. If so, the parameter to be corrected is used as a corrected parameter; if so, the parameter to be corrected is iteratively updated until the difference between the theoretical pressure and the actual pressure is less than or equal to the preset threshold value, and the updated parameter to be corrected is used as the corrected parameter, and the corrected parameter is displayed in the corrected parameter output area; Based on the corrected parameters, bending property parameters are determined.

2. The bending property parameter correction method according to claim 1, characterized in that: The parameter correction setting area includes at least a to-be-corrected type selection control and a to-be-corrected parameter selection control. The step of determining and displaying the to-be-corrected parameter information in response to a triggering operation on the parameter correction setting area includes: In response to a triggering operation on the to-be-corrected type selection control, determining and displaying the to-be-corrected type; In response to selecting a control for the parameter to be corrected, the parameter to be corrected is determined and displayed.

3. The bending property parameter correction method according to claim 1, characterized in that: The parameter correction setting area includes at least a property control, and the step of determining and displaying the parameter information to be corrected in response to a trigger operation on the parameter correction setting area includes: In response to a triggering operation on the property control, displaying a property selection interface; In response to a triggering operation on the attribute selection interface, parameters to be corrected are determined and displayed.

4. The bending property parameter correction method according to claim 1, characterized in that: The bending angle information includes a preset bending angle and an actual bending angle, the angle setting area includes a preset bending angle editing box and an actual bending angle display box, and the step of determining and displaying the bending angle information in response to a triggering operation on the angle setting area includes: In response to an editing operation on the preset bending angle edit box, displaying the preset bending angle; After the bending machine completes the bending operation, the actual bending angle is displayed in the actual bending angle display frame.

5. The bending property parameter correction method according to claim 1, characterized in that: The step of iteratively updating the parameters to be corrected comprises: According to the partial derivative function of the bending pressure formula with respect to the parameter to be corrected, the parameter to be corrected is iteratively updated through gradient descent and error feedback method to obtain the updated parameter to be corrected, and the step of calculating according to the bending pressure formula and the actual bending angle to obtain the theoretical pressure corresponding to the actual bending angle is performed again, until the difference between the theoretical pressure and the actual pressure is less than or equal to a preset threshold, and the updated parameter to be corrected is used as the corrected parameter.

6. The bending property parameter correction method according to claim 1, wherein: The attribute parameter correction interface further includes a plate parameter area, which includes at least a plate selection control and a plate parameter setting area. Before the step of responding to the triggering operation on the parameter correction control, the step further includes: In response to a triggering operation on the plate selection control, a plate to be corrected is determined and displayed, and current parameters of the plate to be corrected are displayed in the plate parameter setting area.

7. The bending property parameter correction method according to claim 6, characterized in that: The step of determining the bending property parameters based on the corrected parameters includes: In response to a triggering operation on the parameter correction control, the current parameters are updated based on the corrected parameters, and the property parameters of the plate to be corrected are determined.

8. A bending property parameter correction system for correcting parameters of plate properties and / or rack properties, characterized in that: The bending property parameter correction system includes: A display module, configured to display an attribute parameter correction interface, wherein the attribute parameter correction interface includes at least a parameter correction setting area, an angle setting area, a parameter correction control, and a corrected parameter output area; a first response module, configured to determine and display parameter information to be corrected in response to a trigger operation on the parameter correction setting area, wherein the parameter information to be corrected includes a type to be corrected and parameters to be corrected. When the type to be corrected is determined to be plate properties, the parameters to be corrected include at least elastic modulus, working strain hardening index, tensile strength, and plate thickness under the plate properties; when the type to be corrected is determined to be frame properties, the parameters to be corrected include at least frame strength and frame stiffness; a second response module, configured to determine and display bending angle information in response to a trigger operation on the angle setting area, wherein the bending angle information includes an actual bending angle; a third response module, configured to respond to a trigger operation on the parameter correction control, obtain a preset bending pressure formula, the actual bending angle, and the actual pressure under the current bending attribute parameters, perform calculations based on the bending pressure formula and the actual bending angle to obtain a theoretical pressure corresponding to the actual bending angle, determine whether a difference between the theoretical pressure and the actual pressure is less than or equal to a preset threshold, and if so, use the parameter to be corrected as a corrected parameter; if so, iteratively update the parameter to be corrected until the difference between the theoretical pressure and the actual pressure is less than or equal to the preset threshold, use the updated parameter to be corrected as the corrected parameter, and display the corrected parameter in the corrected parameter output area; The parameter correction determination module is used to determine the bending property parameters based on the corrected parameters.

9. A bending property parameter correction device, characterized in that: The bending property parameter correction device includes: a memory, a processor, and a bending property parameter correction program stored in the memory and running on the processor. When the bending property parameter correction program is executed by the processor, the steps of the bending property parameter correction method described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a bending property parameter correction program, and when the bending property parameter correction program is executed by a processor, the steps of the bending property parameter correction method according to any one of claims 1 to 7 are implemented.

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