Springback compensation effect determination method and device, equipment, medium and program product

Abstract

The invention is suitable for the technical field of structural design, and provides a springback compensation effect determination method, device and equipment, a medium and a program product, and the method comprises the steps: taking a part design molded surface as a reference standard, determining the compensation springback values of a plurality of pre-calibrated reference measurement points on a target design molded surface, the target design molded surface is a design molded surface obtained after springback compensation simulation is carried out on the part design molded surface; according to the compensation springback values of the multiple reference measuring points, the springback compensation qualification rate of the target design molded surface is determined, and the springback compensation effect of the part is determined according to the springback compensation qualification rate. In the embodiment, the accuracy of springback compensation can be effectively evaluated through the springback compensation qualification rate, designers can be helped to judge the rationality and effectiveness of springback compensation design schemes, design schemes meeting the qualification standard can be quickly screened out, the situation of excessive compensation or insufficient compensation is reduced, and the accuracy of springback compensation is improved. The error between a designed molded surface and an actual molded surface is reduced, and the structural precision of the part is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of structural design, and in particular to a method, device, equipment, medium and program product for determining a springback compensation effect. Background Art

[0002] After forming, stamping parts will rebound due to the release of residual stress. The springback of the part surface causes the size of the part to change, affecting the accuracy of part processing and manufacturing. Therefore, springback compensation is still performed in the part structure design process to limit the springback of the part.

[0003] At present, the most commonly used springback compensation method is to perform springback compensation on the part design according to the springback simulation results of the part design, and then process the part to obtain the actual surface of the formed part. However, the springback simulation results are not completely consistent with the actual springback results of the actual surface of the part, which is prone to over-compensation or under-compensation, resulting in low part structural accuracy. Summary of the invention

[0004] The present invention provides a method, device, equipment, medium and program product for determining a springback compensation effect, so as to solve the technical problem that in the existing springback compensation method, over-compensation or under-compensation is prone to occur, resulting in low part precision.

[0005] In a first aspect, an embodiment of the present application provides a method for determining a rebound compensation effect, comprising:

[0006] Taking the part design surface as a reference standard, determining the compensation springback values ​​of multiple pre-calibrated reference measuring points on the target design surface, where the target design surface is the design surface obtained after performing springback compensation simulation on the part design surface;

[0007] Determine the springback compensation qualified rate of the target design surface according to the springback compensation values ​​of multiple reference measuring points;

[0008] The effect of part springback compensation is determined based on the springback compensation pass rate.

[0009] Optionally, after determining the effect of the part springback compensation according to the springback compensation qualified rate, the method further includes:

[0010] When the effect of the part springback compensation meets the springback compensation requirement, the design parameters of the target design profile are output as a part processing model, and the part processing model is used to process the part to obtain the actual profile of the part;

[0011] Taking the designed surface of the part as the reference standard, determine the actual springback values ​​of multiple reference measuring points on the actual surface of the part;

[0012] Analyze the effect of part springback compensation based on the actual springback values ​​of multiple reference measuring points.

[0013] In the above scheme, by analyzing the springback compensation and measuring the actual springback value, the error of the part after processing can be identified and corrected in advance, the problems that may exist in the springback compensation and processing process can be discovered in time, the effect of the part springback compensation can be accurately evaluated, and the springback compensation scheme of the part can be optimized.

[0014] Optionally, the effect of part springback compensation is analyzed based on the actual springback values ​​of multiple reference measuring points, including:

[0015] According to the standard coordinate information of each reference measuring point on the design surface of the part, the compensatory springback values ​​of multiple reference measuring points and the actual springback values ​​of multiple reference measuring points are associated to determine the compensatory springback value of each reference measuring point and the corresponding actual springback value;

[0016] According to the compensated springback value of each reference measuring point and the corresponding actual springback value, the effect of springback compensation on different part areas is analyzed.

[0017] In the above scheme, by accurately associating the actual springback value of each reference measuring point with the compensated springback value on the design surface, the effect of springback compensation can be systematically analyzed, the deviation in the springback compensation process can be identified, and the springback conditions in different areas can be optimized, thereby improving the accuracy and efficiency of springback compensation.

[0018] Optionally, the effect of springback compensation on different parts regions is analyzed based on the compensated springback value of each reference measuring point and the corresponding actual springback value, including:

[0019] generating a first springback curve according to the compensated springback values ​​of the plurality of reference measuring points, and generating a second springback curve according to the actual springback values ​​of the plurality of reference measuring points;

[0020] The effects of springback compensation on different regions of the part are determined according to the standard coordinate information of each reference measuring point, the first springback curve and the second springback curve.

[0021] In the above scheme, by analyzing the compensated springback values ​​and actual springback values ​​of multiple reference measuring points and generating corresponding springback curves, the springback compensation effects of different part areas can be quantified.

[0022] Optionally, the actual springback values ​​of multiple reference measuring points on the actual surface of the part are determined with the design surface of the part as a reference standard, including:

[0023] Obtain standard coordinate information of multiple reference measuring points on the design surface of the part;

[0024] According to the standard coordinate information of the multiple reference measuring points, the measurement coordinate information of the multiple reference measuring points on the actual surface of the part is determined;

[0025] Based on the standard coordinate information and measured coordinate information of each reference measuring point, the normal displacement of each reference measuring point on the actual surface of the part relative to the design surface of the part is determined, and the actual springback value of each reference measuring point on the actual surface of the part is obtained.

[0026] In the above scheme, based on the standard coordinate information and measurement coordinate information of each reference measuring point, the normal displacement of each reference measuring point on the actual surface of the part relative to the design surface of the part is determined, and the actual rebound value of each reference measuring point on the actual surface of the part is obtained, which improves the accuracy of the actual rebound value and simplifies the measurement process and data processing.

[0027] Optionally, taking the part design surface as a reference standard, determining the compensatory springback values ​​of a plurality of pre-calibrated reference measuring points on the target design surface, including:

[0028] Obtain standard coordinate information of multiple reference measuring points on the part design surface, and obtain simulated coordinate information of multiple reference measuring points on the target design surface;

[0029] Based on the standard coordinate information and simulated coordinate information of each reference measuring point, the normal displacement of each reference measuring point on the target design surface relative to the part design surface is determined, and the compensatory springback value of each reference measuring point on the target design surface is obtained.

[0030] In the above scheme, the normal displacement is used to represent the compensation rebound value, which improves the accuracy of the compensation rebound value. There is no need to consider the complex three-dimensional spatial offset, and only the displacement in the normal direction needs to be paid attention to, which simplifies the measurement process and data processing.

[0031] Optionally, the springback compensation qualified rate of the target design surface is determined according to the compensated springback values ​​of multiple reference measuring points, including: marking the reference measuring points whose compensated springback values ​​are within a preset threshold range as qualified measuring points, and obtaining the number of qualified measuring points; determining the qualified rates of multiple reference measuring points according to the number of qualified measuring points, and obtaining the springback compensation qualified rate of the target design surface, which is simple and intuitive.

[0032] In a second aspect, an embodiment of the present application provides a device for determining a rebound compensation effect, comprising:

[0033] The first determination module is used to determine the compensation springback values ​​of a plurality of pre-calibrated reference measuring points on a target design surface with the design surface of the part as a reference standard, wherein the target design surface is a design surface obtained after performing a springback compensation simulation on the design surface of the part;

[0034] The second determination module is used to determine the springback compensation qualified rate of the target design profile according to the springback compensation values ​​of the multiple reference measuring points;

[0035] The third determination module is used to determine the effect of the part springback compensation according to the springback compensation qualified rate.

[0036] In a third aspect, an embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned method for determining the rebound compensation effect when executing the computer program.

[0037] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the above-mentioned method for determining the rebound compensation effect are implemented.

[0038] In a fifth aspect, an embodiment of the present application provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the method for determining the rebound compensation effect.

[0039] In a scheme provided by the above-mentioned method, device, equipment, medium and program product for determining the effect of springback compensation, the part design surface is used as a reference standard to determine the compensation springback values ​​of multiple pre-calibrated reference measuring points on the target design surface, and the target design surface is the design surface obtained after the springback compensation simulation of the part design surface; the springback compensation qualified rate of the target design surface is determined according to the compensation springback values ​​of multiple reference measuring points, and the effect of the part springback compensation is determined according to the springback compensation qualified rate. In this embodiment, the springback compensation qualified rate of the target design surface can be determined by determining the compensation springback values ​​of multiple key reference measuring points on the part design surface on the target design surface. The springback compensation qualified rate can effectively evaluate the accuracy of the springback compensation, which can help designers judge the rationality and effectiveness of the springback compensation design scheme, help to quickly screen out the design scheme that meets the qualified standards, reduce over-compensation or under-compensation, reduce the error between the design surface and the actual surface, and improve the part structure accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0041] Figure 1 is a structural schematic diagram of a system for determining a rebound compensation effect in one embodiment of the present invention;

[0042] Figure 2 is a flow chart of a method for determining a springback compensation effect in one embodiment of the present invention;

[0043] Figure 3 yes Figure 2A schematic diagram of an implementation process of step S10;

[0044] Figure 4 yes Figure 2 A schematic diagram of an implementation process of step S20;

[0045] Figure 5 is another flow chart of a method for determining a springback compensation effect in one embodiment of the present invention;

[0046] Figure 6 yes Figure 5 A schematic diagram of an implementation process of step S40;

[0047] Figure 7 yes Figure 5 A schematic diagram of an implementation process of step S50;

[0048] Figure 8 It is a schematic diagram of the structure of a part design surface and multiple reference measuring points in one embodiment of the present invention;

[0049] Fig. 9 yes Figure 8 a graph of a first springback curve and a second springback curve generated by a plurality of reference measuring points;

[0050] Fig.10 is another structural schematic diagram of a part design profile and reference measuring points in one embodiment of the present invention;

[0051] Fig.11 yes Fig.10 a graph of a first springback curve and a second springback curve generated by a plurality of reference measuring points;

[0052] Fig.12 yes Figure 2 A structural schematic diagram of a device for determining a rebound compensation effect;

[0053] Fig.13 It is a schematic diagram of the structure of an electronic device in one embodiment of the present invention. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or their collections. It should also be understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0056] In addition, in the description of the present specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0057] References to "one embodiment" or "some embodiments" etc. described in the present specification mean that one or more embodiments of the present invention include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0058] It should be understood that the order of execution of the steps in the following embodiments does not imply a precedence of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0059] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0060] The method for determining the rebound compensation effect provided by the embodiment of the present invention can be applied in the following aspects: Figure 1 In the springback compensation effect determination system shown in the figure, the springback compensation effect determination system includes a terminal device and a springback compensation effect determination device, and the springback compensation effect determination device communicates with the terminal device through a bus or a network. The terminal device is used to send relevant instructions to the springback compensation effect determination device, such as part design instructions, springback compensation instructions, and springback compensation effect evaluation instructions, and receive information sent by the springback compensation effect determination device, such as the first springback curve and the second springback curve.

[0061] Specifically, in the part design stage, the user sends a springback compensation effect evaluation instruction to the springback compensation effect determination device through the terminal device, and the springback compensation effect evaluation instruction is used to instruct the springback compensation effect determination device to evaluate the springback effect after the part springback compensation; after receiving the springback compensation effect evaluation instruction, the springback compensation effect determination device obtains the part design surface and the target design surface. Among them, the part design surface and the target design surface can be pre-generated by the springback compensation effect determination device, or they can be the part design surface and the target design surface received from the terminal device. Among them, the part design surface is represented by a series of design parameters, and the target design surface is represented by a series of design parameters after the springback compensation of the part design surface. After obtaining the part design surface and the target design surface, the springback compensation effect determination device uses the part design surface as a reference standard to determine the compensated springback values ​​of multiple pre-calibrated reference measuring points on the target design surface, and then determines the springback compensation qualified rate of the target design surface according to the compensated springback values ​​of the multiple reference measuring points, and determines the effect of the part springback compensation according to the springback compensation qualified rate.

[0062] In this embodiment, by determining the compensation springback values ​​of multiple key reference measuring points on the part design surface on the target design surface, the springback compensation pass rate of the target design surface can be determined. The accuracy of the springback compensation can be effectively evaluated through the springback compensation pass rate, which can help designers judge the rationality and effectiveness of the springback compensation design scheme, help to quickly screen out design schemes that meet the qualification standards, reduce over-compensation or under-compensation, reduce the error between the design surface and the actual surface, and improve the part structure accuracy.

[0063] The terminal device may be any personal computer, laptop computer, smart phone, tablet computer and portable wearable device. The rebound compensation effect determination device may be any personal computer, laptop computer, smart phone and tablet computer. The rebound compensation effect determination device may also be a server. The server may be implemented as an independent server or a server cluster composed of multiple servers.

[0064] In one embodiment, if Figure 2 As shown, a method for determining the rebound compensation effect is provided, and the method is applied in Figure 1 The rebound compensation effect determination device in the embodiment is described as an example, comprising the following steps:

[0065] S10: Taking the part design surface as a reference standard, determining the compensatory springback values ​​of a plurality of pre-calibrated reference measuring points on the target design surface.

[0066] In the part design stage, before determining the springback compensation effect, the springback compensation effect determination device needs to first obtain the part design surface and the target design surface, where the target design surface is the design surface obtained after springback compensation simulation of the part design surface.

[0067] The acquisition process of the part design surface is as follows: in the part design stage, the user sends a part design instruction and / or a springback compensation instruction to the springback compensation effect determination device through a terminal device. The part design instruction is used to instruct the springback compensation effect determination device to perform part design according to the input part design requirements to obtain the part design surface; the springback compensation instruction is used to instruct the springback compensation effect determination device to perform springback compensation on the part design surface according to a certain springback compensation strategy to obtain the part design surface. After receiving the part design instruction, the springback compensation effect determination device establishes a part model according to the part design requirements input by the designer to define the geometric shape, size, tolerance and other parameters of the part to obtain the part design surface. Then, the springback compensation effect determination device can generate a three-dimensional model of the part through relevant software, and mark multiple key points of the part on the part design surface of the three-dimensional model as multiple reference measurement points for subsequent springback compensation, and record the coordinate information of each reference measurement point on the part design surface to obtain the standard coordinate information of multiple reference measurement points. Among them, these reference measuring points are key points on the part that are easily affected by springback and affect assembly accuracy. For example, these reference measuring points can be surface feature points, connection points or edge points on the part. These reference measuring points can cover important geometric areas of the part.

[0068] After obtaining the part design surface, the springback compensation effect determination device performs springback compensation on the part design surface to obtain the target design surface. The process of obtaining the target design surface is as follows: the springback compensation effect determination device uses relevant simulation software to perform springback simulation on the part design surface according to a certain springback compensation strategy, simulates the deformation of the part caused by stress changes, material springback and other factors during the manufacturing process, and obtains the springback simulation data of the part design surface; the springback compensation effect determination device performs springback compensation calculation on the part design surface according to the springback simulation data, using the springback compensation function of the relevant simulation software, and obtains the part design surface after springback compensation, that is, the target design surface. After obtaining the target design surface, the springback compensation effect determination device needs to determine the coordinate information of multiple reference measuring points on the target design surface to obtain the simulated coordinate information of multiple reference measuring points.

[0069] In other embodiments, the springback compensation effect determination device may also directly obtain the part design surface and the target design surface sent by the terminal device without performing the surface generation process.

[0070] After obtaining the part design surface and the target design surface, the springback compensation effect determination device uses the part design surface as a reference standard to determine the compensation springback values ​​of a plurality of pre-calibrated reference measuring points on the target design surface. The compensation springback value of the reference measuring point on the target design surface represents the surface difference between the target design surface and the part design surface at the reference measuring point, which can be obtained by calculating the normal displacement of the reference measuring point on the target design surface relative to the part design surface.

[0071] S20: determining a springback compensation qualified rate of the target design profile according to the compensated springback values ​​of the plurality of reference measuring points.

[0072] After determining the compensated springback values ​​of multiple reference measuring points on the target design surface, the springback compensation effect determination device determines the springback compensation qualified rate of the target design surface according to the compensated springback values ​​of the multiple reference measuring points, wherein the springback compensation qualified rate of the target design surface represents the proportion of the reference measuring points whose compensated springback values ​​meet the springback compensation requirements among the multiple reference measuring points.

[0073] S30: Determine the effect of part springback compensation based on the springback compensation qualification rate.

[0074] After obtaining the springback compensation qualified rate of the target design surface, the springback compensation effect determination device determines the effect of the part springback compensation according to the springback compensation qualified rate, so as to analyze the distribution and causes of unqualified reference measuring points according to the effect of the part springback compensation, and readjust the springback compensation plan or optimize the part design surface.

[0075] For example, the effect of part springback compensation can be graded according to the springback compensation qualified rate, and different springback compensation qualified rates represent different springback compensation effects; when the springback compensation qualified rate is less than or equal to the first qualified rate (such as 80%), the effect of part springback compensation is determined to be poor springback compensation effect, and the springback compensation requirements are not met. It is necessary to analyze the distribution and causes of unqualified reference measuring points according to the effect of part springback compensation, readjust the springback compensation scheme or optimize the part design profile to optimize the part design. When the springback compensation qualified rate is greater than the first qualified rate and less than or equal to the second qualified rate (such as 90%), the effect of part springback compensation is determined to be good springback compensation effect, and the springback compensation requirements are preliminarily met. Springback compensation can be re-performed to optimize the part design, or the design parameters of the target design profile can be output as a part processing model, so that the part can be processed according to the part processing model to obtain the actual part profile. When the springback compensation qualified rate is greater than the second qualified rate, it is determined that the effect of the springback compensation of the part is excellent and meets the springback compensation requirements. The design parameters of the target design surface can be output as a part processing model so that the part can be processed according to the part processing model to obtain the actual surface of the part, so as to evaluate the effect of the springback compensation in the part design stage in combination with the actual surface of the part.

[0076] In this embodiment, the part design surface is used as a reference standard to determine the compensation springback values ​​of multiple pre-calibrated reference measuring points on the target design surface, and the target design surface is the design surface obtained after the springback compensation simulation of the part design surface; according to the compensation springback values ​​of multiple reference measuring points, the springback compensation qualified rate of the target design surface is determined, and the effect of the part springback compensation is determined according to the springback compensation qualified rate. By determining the compensation springback values ​​of multiple key reference measuring points on the part design surface on the target design surface, the springback compensation qualified rate of the target design surface can be determined. The springback compensation qualified rate can effectively evaluate the accuracy of the springback compensation, which can help designers judge the rationality and effectiveness of the springback compensation design scheme. It is helpful to quickly screen out design schemes that meet the qualified standards, reduce over-compensation or under-compensation, reduce the error between the design surface and the actual surface, improve the part design efficiency and part structure accuracy, ensure that the produced parts accurately meet the design expectations, and reduce dimensional deviations and poor assembly caused by springback.

[0077] In one embodiment, the compensatory springback value of the reference measuring point can be obtained by calculating the normal displacement of the reference measuring point on the target design surface relative to the part design surface. Figure 3 As shown, in step S10, the compensatory springback values ​​of a plurality of pre-calibrated reference measuring points on the target design surface are determined with the design surface of the part as the reference standard, which specifically includes the following steps:

[0078] S11: obtaining standard coordinate information of multiple reference measuring points on the part design surface, and obtaining simulated coordinate information of multiple reference measuring points on the target design surface.

[0079] In this embodiment, after obtaining the part design surface, the device for determining the springback compensation effect needs to determine multiple key points of the part on the part design surface according to the annotation information input by the user, or automatically identify multiple key points of the part on the part design surface as multiple reference measuring points for subsequent springback compensation. Then, the coordinate information of each reference measuring point on the part design surface is recorded to obtain the standard coordinate information of multiple reference measuring points on the part design surface. Among them, these reference measuring points are key points on the part that are easily affected by springback and affect the assembly accuracy. In addition, for the convenience of subsequent comparison, it is also necessary to record the normal vector of each reference measuring point in the normal direction (i.e., the direction perpendicular to the part design surface) on the part design surface to ensure that the direction of subsequent displacement measurement is consistent.

[0080] Similarly, after obtaining the target design surface obtained by springback compensation for the part design surface, the springback compensation effect determination device needs to determine the coordinate position of each reference measuring point on the target design surface, record the coordinate information of each reference measuring point on the target design surface, and obtain the simulated coordinate information of multiple reference measuring points.

[0081] S12: Based on the standard coordinate information and the simulated coordinate information of each reference measuring point, the normal displacement of each reference measuring point on the target design surface relative to the part design surface is determined to obtain the compensatory springback value of each reference measuring point on the target design surface.

[0082] The device for determining the springback compensation effect determines the normal displacement of each reference measuring point on the target design surface relative to the part design surface based on the standard coordinate information of each reference measuring point, the normal vector in the normal direction and the simulated coordinate information, and obtains the compensation springback value of each reference measuring point on the target design surface.

[0083] Specifically, the compensatory springback value of the reference measuring point on the target design surface is calculated by the following formula:

[0084] Δd=(x2-x1)·nx+(y2-y1)·ny+(z2-z1)·nz;

[0085] Among them, Δd represents the normal displacement of the reference measuring point on the target design surface relative to the part design surface, that is, the compensatory rebound value of the reference measuring point on the target design surface; (x1, y1, z1) represents the standard coordinate information of the reference measuring point, x1, y1, z1 represent the coordinate values ​​of the reference measuring point on the part design surface on the x, y, and z axes, respectively; (nx, ny, nz) represents the normal vector of the reference measuring point in the normal direction on the part design surface; (x2, y2, z2) represents the simulated coordinate information of the reference measuring point, x2, y2, z2 represent the coordinate values ​​of the reference measuring point on the target design surface on the x, y, and z axes, respectively.

[0086] In other embodiments, the rebound compensation effect determination device can directly use the standard coordinate information and simulation coordinate information of each reference measuring point to calculate the spatial displacement of each reference measuring point. The size of the spatial displacement is the straight-line distance from the initial position (standard coordinate information) to the target position (simulation coordinate information) of the reference measuring point, also known as the Euclidean distance. The difference in the x-, y-, and z-axis coordinate values ​​of the reference measuring point can be directly calculated, and the square root of the sum of the squares of the differences of the three coordinate values ​​can be taken to obtain the spatial coordinates of the reference measuring point as the compensation rebound value of the reference measuring point on the target design surface.

[0087] In this embodiment, the springback compensation effect determination device determines the normal displacement of each reference measuring point on the target design surface relative to the part design surface based on the standard coordinate information and simulation coordinate information of each reference measuring point, and obtains the compensation springback value of each reference measuring point on the target design surface. Since springback usually occurs in the vertical direction of the part, the normal displacement is used to represent the compensation springback value, which improves the accuracy of the compensation springback value. In addition, there is no need to consider complex three-dimensional spatial offset, and only the displacement in the normal direction needs to be paid attention to, which simplifies the measurement process and data processing.

[0088] In one embodiment, if Figure 4 As shown, in step S20, the springback compensation qualified rate of the target design profile is determined according to the springback compensation values ​​of multiple reference measuring points, which specifically includes the following steps:

[0089] S21: marking reference measuring points whose compensation rebound values ​​are within a preset threshold range as qualified measuring points, and obtaining the number of qualified measuring points.

[0090] First, the rebound compensation effect determination device obtains a preset threshold range, which is calibrated according to the part structure and precision requirements. For example, when the part is a body part with general precision requirements, the preset threshold range can be set to a range greater than -0.5 and less than 0.5. It is determined whether the compensation rebound value of each reference measuring point is within the preset threshold range, and the reference measuring point whose compensation rebound value is not within the preset threshold range is marked as an unqualified measuring point (i.e., an out-of-tolerance measuring point), and the reference measuring point whose compensation rebound value is within the preset threshold range is marked as a qualified measuring point, and finally the number of qualified measuring points among multiple reference measuring points is counted.

[0091] S22: Determine the qualified rate of multiple reference measuring points according to the number of qualified measuring points, and obtain the springback compensation qualified rate of the target design profile.

[0092] The springback compensation effect determination device determines the qualified rate of multiple reference measuring points according to the number of qualified measuring points, that is, directly divides the number of qualified measuring points by the total number of reference measuring points to obtain the springback compensation qualified rate of the target design profile.

[0093] For example, the compensation rebound values ​​of multiple reference measuring points can be input into the relevant table, and then the countif function is used to count the number of reference measuring points whose compensation rebound values ​​are within the preset threshold range, that is, the number of reference measuring points whose compensation rebound values ​​are greater than -0.5 and less than +0.5 is counted, and then divided by the total number of reference measuring points to obtain the qualified rate of the reference measuring points, that is, the qualified rate of the springback compensation of the target design surface.

[0094] In this embodiment, the rebound compensation effect determination device marks the reference measuring points whose compensated rebound values ​​are within the preset threshold range as qualified measuring points, and counts the number of qualified measuring points, determines the qualified rate of multiple reference measuring points according to the number of qualified measuring points, and obtains the springback compensation qualified rate of the target design surface, which is simple and intuitive.

[0095] In one embodiment, if Figure 5 As shown, after step S20, that is, after determining the effect of the part springback compensation according to the springback compensation qualified rate, the method further specifically includes the following steps:

[0096] S40: When the effect of the part springback compensation meets the springback compensation requirement, the design parameters of the target design profile are output as a part processing model, and the part processing model is used to process the part to obtain the actual profile of the part.

[0097] After determining the effect of part springback compensation according to the springback compensation qualified rate, the springback compensation effect determination device determines whether the effect of part springback compensation meets the springback compensation requirement. For example, when the effect of part springback compensation is excellent, it is determined that the effect of part springback compensation meets the springback compensation requirement.

[0098] When the springback compensation effect of the part meets the springback compensation requirements, the springback compensation effect determination device outputs the design parameters of the target design profile as a part processing model, and the part processing model is used to process the part to obtain the actual profile of the part. Relevant personnel can process the part according to the part processing model to obtain the actual profile of the part.

[0099] S50: Taking the design surface of the part as the reference standard, determine the actual springback values ​​of multiple reference measuring points on the actual surface of the part.

[0100] The springback compensation effect determination device uses the part design surface as a reference standard to determine the actual springback values ​​of multiple reference measuring points on the part physical surface. The actual springback value of the reference measuring point on the part physical surface represents the surface difference between the part physical surface and the part design surface at the reference measuring point, which can be obtained by calculating the normal displacement of the reference measuring point on the part physical surface relative to the part design surface.

[0101] S60: Analyze the effect of part springback compensation based on the actual springback values ​​of multiple reference measuring points.

[0102] After determining the actual springback values ​​of the plurality of reference measuring points, the springback compensation effect determination device analyzes the effect of the part springback compensation according to the actual springback values ​​of the plurality of reference measuring points.

[0103] For example, a reference measuring point whose actual springback value is within a preset threshold range is determined among multiple reference measuring points, and is marked as a qualified measuring point. The proportion of qualified measuring points among multiple reference measuring points is counted to obtain the qualified rate of the reference measuring points in the physical surface of the part. According to the qualified rate of the reference measuring points in the physical surface of the part and the qualified rate of the springback compensation of the target design surface, the effect of the springback compensation of the part in the part design stage is determined. The springback compensation qualified rate of the target design surface and the qualified rate of the reference measuring points in the physical surface of the part can be compared. The closer the qualified rate of the reference measuring points in the physical surface of the part is to the springback compensation qualified rate of the target design surface, the greater the difference between the two, and the better the springback compensation effect in the part design stage is; conversely, the more the qualified rate of the reference measuring points in the physical surface of the part deviates from the springback compensation qualified rate of the target design surface, the smaller the difference between the two, and the worse the springback compensation effect in the part design stage is, and it is necessary to adjust the design of the part design surface and / or redesign the springback compensation scheme to obtain a new target design surface and evaluate the springback compensation effect.

[0104] In this embodiment, when the effect of the part springback compensation meets the springback compensation requirements, the design parameters of the target design profile are output as a part processing model, so that the part is processed according to the part processing model to obtain the actual part profile. Through more accurate springback compensation and optimization of the part processing model, a part that meets the design requirements can be obtained more accurately in one processing, reducing the adjustment and repeated processing caused by the springback error, thereby improving production efficiency and resource utilization; taking the part design profile as a reference standard, the actual springback values ​​of multiple reference measuring points on the actual part profile are determined; and the effect of the part springback compensation is analyzed according to the actual springback values ​​of multiple reference measuring points. Through the springback compensation analysis and measurement of the actual springback value, the error after the part processing can be identified and corrected in advance, the problems that may exist in the springback compensation and processing process can be discovered in time, the mismatch between the design and the processing can be avoided, the effect of the part springback compensation can be accurately evaluated, and the springback compensation scheme of the part can be optimized.

[0105] In one embodiment, if Figure 6 As shown, in step S50, the actual springback values ​​of multiple reference measuring points on the actual surface of the part are determined using the designed surface of the part as a reference standard, which specifically includes the following steps:

[0106] S51: Obtain standard coordinate information of multiple reference measuring points on the part design surface.

[0107] Obtain the measurement coordinate information of multiple reference measuring points on the actual surface of the part.

[0108] As described above, the springback compensation effect determination device obtains pre-stored standard coordinate information of multiple reference measuring points on the part design surface, and the normal direction of each reference measuring point, which is represented by a normal vector of the normal direction.

[0109] S52: Determine the measurement coordinate information of multiple reference measuring points on the actual surface of the part according to the standard coordinate information of multiple reference measuring points

[0110] After obtaining the physical surface of the part, the springback compensation effect determination device needs to determine the measurement coordinate information of the multiple reference measuring points on the physical surface of the part according to the standard coordinate information of the multiple reference measuring points.

[0111] After obtaining the physical surface of the part, the springback compensation effect determination device can scan the physical surface of the part by blue light scanning, obtain the coordinate information of multiple reference measuring points on the physical surface of the part, and record the measurement coordinate information of the multiple reference measuring points. The standard coordinate information of the multiple reference measuring points is input into the blue light scanning device, and the blue light scanning device is controlled to scan and detect the physical surface of the part according to the standard coordinate information of each reference measuring point, and the measurement coordinates corresponding to each standard coordinate information fed back by the blue light scanning device are obtained, and the measurement coordinate information corresponding to each reference measuring point is obtained.

[0112] S53: Based on the standard coordinate information and the measured coordinate information of each reference measuring point, the normal displacement of each reference measuring point on the actual surface of the part relative to the design surface of the part is determined to obtain the actual springback value of each reference measuring point on the actual surface of the part.

[0113] The device for determining the springback compensation effect determines the normal displacement of each reference measuring point on the actual surface of the part relative to the design surface of the part based on the standard coordinate information of each reference measuring point, the normal vector in the normal direction on the design surface of the part and the measured coordinate information, and obtains the actual springback value of each reference measuring point on the actual surface of the part.

[0114] Specifically, the compensation springback value of the reference measuring point on the physical surface of the part is calculated by the following formula:

[0115] Δd=(x3-x1)·nx+(y3-y1)·ny+(z3-z1)·nz;

[0116] Among them, Δd represents the normal displacement of the reference measuring point on the actual surface of the part relative to the design surface of the part, that is, the actual springback value of the reference measuring point on the actual surface of the part; (x1, y1, z1) represents the standard coordinate information of the reference measuring point, x1, y1, z1 represent the coordinate values ​​of the reference measuring point on the design surface of the part on the x, y, z axis respectively; (nx, ny, nz) represents the normal vector of the reference measuring point in the normal direction on the design surface of the part; (x3, y3, z3) represents the measurement coordinate information of the reference measuring point, x3, y3, z3 represent the coordinate values ​​of the reference measuring point on the actual surface of the part on the x, y, z axis respectively.

[0117] In other embodiments, the rebound compensation effect determination device can directly use the standard coordinate information and measured coordinate information of each reference measuring point to calculate the spatial displacement of each reference measuring point. The size of the spatial displacement is the straight-line distance from the reference measuring point from the initial position (standard coordinate information) to the actual position (measured coordinate information).

[0118] In this embodiment, by acquiring the standard coordinate information of multiple reference measuring points on the part design surface and determining the measurement coordinate information of multiple reference measuring points on the part physical surface, then based on the standard coordinate information and the measurement coordinate information of each reference measuring point, the normal displacement of each reference measuring point on the part physical surface relative to the part design surface is determined, and the actual rebound value of each reference measuring point on the part physical surface is obtained, which improves the accuracy of the actual rebound value and simplifies the measurement process and data processing.

[0119] In one embodiment, if Figure 7 As shown, in step S60, the effect of part springback compensation is analyzed according to the actual springback values ​​of multiple reference measuring points, which specifically includes the following steps:

[0120] S61: according to the standard coordinate information of each reference measuring point on the part design surface, the compensatory springback values ​​of multiple reference measuring points and the actual springback values ​​of multiple reference measuring points are associated to determine the compensatory springback value of each reference measuring point and the corresponding actual springback value.

[0121] After obtaining the actual springback value of each reference measuring point on the physical surface of the part, the springback compensation effect determination device associates the compensated springback values ​​of multiple reference measuring points with the actual springback values ​​of multiple reference measuring points according to the standard coordinate information of each reference measuring point on the design surface of the part, that is, according to the coordinate information of each reference measuring point, the actual springback value is matched with the compensated springback value one by one to form a data pair of the actual springback value and the compensated springback value of each reference measuring point, and the data pair of the reference measuring point includes the compensated springback value of the reference measuring point and the corresponding actual springback value.

[0122] S62: Analyze the effect of springback compensation on different parts regions according to the compensated springback value of each reference measuring point and the corresponding actual springback value.

[0123] The springback compensation effect determination device analyzes the springback compensation effects on different parts regions according to the compensated springback values ​​of each reference measuring point and the corresponding actual springback values.

[0124] For example, if the difference between the actual springback value and the compensated springback value of a certain reference measuring point or a certain area of ​​a part is small, it means that the springback compensation effect of the reference measuring point or the part area is good; on the contrary, if the difference between the actual springback value and the compensated springback value of a certain reference measuring point or a certain area of ​​a part is large, it means that the springback compensation effect of the reference measuring point or the part area is not good, and it is necessary to adjust the springback compensation scheme or optimize the part design to achieve a more accurate springback compensation effect, thereby improving the processing accuracy and final quality of the part. Among them, statistical analysis, error distribution diagram or surface fitting can be used to evaluate the effect of springback compensation in each part area.

[0125] In this embodiment, according to the standard coordinate information of each reference measuring point on the part design surface, the compensation rebound values ​​of multiple reference measuring points and the actual rebound values ​​of multiple reference measuring points are associated, the compensation rebound value of each reference measuring point and the corresponding actual rebound value are determined, and according to the compensation rebound value of each reference measuring point and the corresponding actual rebound value, the effect of springback compensation in different parts areas is analyzed. By accurately associating the actual rebound value of each reference measuring point with the compensation rebound value on the design surface, the effect of springback compensation can be systematically analyzed, the deviation in the springback compensation process can be identified, and the springback conditions in different areas can be optimized, thereby improving the accuracy and efficiency of springback compensation. In addition, according to the analysis of the springback compensation effect, the deviation in the part processing process and the possible causes of the deviation can also be identified and checked, and the quality of part processing can be optimized, which can not only improve the processing accuracy of the parts, but also achieve more efficient quality control in the production process, reduce costs and improve product consistency and stability.

[0126] In one embodiment, step S62, that is, analyzing the effect of springback compensation on different parts regions according to the compensated springback value of each reference measuring point and the corresponding actual springback value, specifically includes the following steps:

[0127] S621: Generate a first springback curve according to the compensated springback values ​​of the multiple reference measuring points, and generate a second springback curve according to the actual springback values ​​of the multiple reference measuring points.

[0128] The rebound compensation effect determination device generates a first rebound curve according to the compensated rebound values ​​of multiple reference measuring points. For example, the first rebound curve can be generated using an interpolation algorithm (such as spline interpolation, B-spline curve) or a fitting curve algorithm. Similarly, according to the actual rebound values ​​of multiple reference measuring points, an interpolation algorithm (such as spline interpolation, B-spline curve) or a fitting curve algorithm is used to generate a second rebound curve.

[0129] After generating the first rebound curve and the second rebound curve, the rebound compensation effect determination device can send the first rebound curve and the second rebound curve to the terminal device, and display the first rebound curve and the second rebound curve through the terminal device, so that the user can understand and analyze the differences between the compensated rebound values ​​and the actual rebound values ​​of multiple reference measuring points and the reasons for the differences based on the displayed first rebound curve and the second rebound curve.

[0130] S622: Determine the effect of springback compensation on different parts regions according to the standard coordinate information of each reference measuring point, the first springback curve and the second springback curve.

[0131] After generating a first springback curve including compensated springback values ​​of a plurality of reference measuring points, and generating a second springback curve including actual springback values ​​of a plurality of reference measuring points, the springback compensation effect determination device determines the springback compensation effects of different part regions according to the standard coordinate information of each reference measuring point, the first springback curve, and the second springback curve. The standard coordinate information of the reference measuring point is used to determine the part region where the reference measuring point is located.

[0132] Wherein, different regions of the part (such as the top, bottom, edge, middle, etc.) may experience different processing and springback effects. After obtaining the first springback curve and the second springback curve, the springback compensation effect determination device can compare the first springback curve with the second springback curve, and analyze the effects of springback compensation in different parts regions and the reasons for the differences by comparing the shapes, trends and error sizes of the curves, the springback value differences of the same reference measuring point or the overall differences of multiple reference measuring points in the same part region, and the springback value differences of the same reference measuring point or the overall differences of multiple reference measuring points in the same part region. Wherein, multiple reference measuring points in the same part region are classified and counted according to the standard coordinate information of each reference measuring point. After determining and determining the effects of springback compensation in different parts regions and the reasons for the differences, the springback compensation effect determination device can send the first springback curve and the second springback curve, the springback value differences of the same reference measuring point or the overall differences of multiple reference measuring points in the same part region, and the effects of springback compensation in the same part region, and the reasons for the differences to the user's terminal device to display the information through the terminal device so that the user can intuitively understand the information.

[0133] Among them, take the part design surface of the front door opening area of ​​the body side as an example. Figure 8 As shown in the figure, the multiple reference measuring points marked in the front door opening area of ​​the body side include 04001SL to 04037SL, a total of 37 reference measuring points. Figure 8 The XYZ coordinate system in represents a three-dimensional coordinate system. The first springback curve and the second springback curve are shown in Fig. 9 As shown, Fig. 9The horizontal axis represents the reference measuring point, and the vertical axis represents the rebound value. After the part rebound compensation simulation is performed on the part design surface of the front door opening area of ​​the body side to obtain the target design surface, the first rebound curve is generated according to the compensation rebound values ​​of multiple reference measuring points on the target design surface, that is, Fig. 9 The curve corresponding to the simulated value in . Fig. 9 It can be seen that the compensation rebound values ​​of most reference measuring points in the first rebound curve are within the preset threshold range (-0.5, 0.5), and the compensation rebound values ​​of the three reference measuring points 04022SL to 04024SL exceed the preset threshold range. According to the standard coordinate information of the three reference measuring points 04022SL to 04024SL, it can be known that the area where these three reference measuring points are located is the small buckle area of ​​the front door opening of the body side. It can be calculated that the springback compensation qualified rate of the target design surface is 91.8%, which meets the springback compensation requirements. The target design surface can be output as a part processing model, and the part processing is performed according to the part processing model to obtain the physical surface of the part of the first round of parts, and then the second rebound curve is generated according to the actual springback values ​​of multiple reference measuring points on the physical surface of the part, that is, Fig. 9 The curve corresponding to the first round of output.

[0134] Depend on Fig. 9 It can be seen that after the first round of parts are produced and the actual springback values ​​of each reference measuring point in the second springback curve fluctuate greatly, and the difference between them and the first springback curve is large. After excluding the cause of the springback compensation effect, it is analyzed that the difference between the two may be due to the poor quality of the mold, and the mold quality needs to be improved. After improving the mold quality, the part is re-processed according to the part processing model to obtain the actual surface of the part for the second round of parts, and then the second springback curve is generated based on the actual springback values ​​of multiple reference measuring points on the actual surface of the part, that is, Fig. 9 The curve corresponding to the second round of output. Fig. 9 It can be seen that the rebound value fluctuations of the curve corresponding to the second round of parts and the curve corresponding to the simulation value are similar. The gap between the actual rebound value and the compensated rebound value of 04034SL is too large, and the rebound compensation effect may not be good. According to the standard coordinate information of 04034SL, it can be known that the area where the reference measuring point is located is the small buckle area of ​​the front door opening of the body side. The poor local stiffness of the small buckle area may cause the gap between the actual rebound value and the compensated rebound value to be too large. It is determined that the effect of the springback compensation of this part is relatively good.

[0135] Among them, take the part design surface of the body side roof beam area as an example, Fig.10 As shown, the multiple reference measuring points marked in the body side roof beam area include 08016SL to 08037SL (some reference measuring points are not shown), a total of 22 reference measuring points. Fig.11 As shown, Fig.11The horizontal axis represents the reference measuring point, and the vertical axis represents the rebound value. After the part rebound compensation simulation is performed on the part design surface of the body side top beam area to obtain the target design surface, the first rebound curve is generated according to the compensation rebound values ​​of multiple reference measuring points on the target design surface, that is, Fig.11 The curve corresponding to the simulated value in . Fig.11 It can be seen that the compensation springback values ​​of most reference measuring points in the first springback curve are within the preset threshold range (-0.5, 0.5), and the compensation springback values ​​of one or two reference measuring points exceed the preset threshold range. It can be calculated that the springback compensation qualified rate of the target design surface is 87.5%, which preliminarily meets the springback compensation requirements. Try to output the target design surface as a part processing model, and perform part processing according to the part processing model to obtain the physical surface of the part of the first round of parts, and then generate the second springback curve according to the actual springback values ​​of multiple reference measuring points on the physical surface of the part, that is, Fig.11 The curve corresponding to the first round of output.

[0136] Depend on Fig.11 It can be seen that the actual springback values ​​of each reference measuring point in the curve corresponding to the first round of parts also fluctuate greatly, and the difference between them and the first springback curve is large. After excluding the cause of the springback compensation effect, it is analyzed that the difference between the two may be due to the poor quality of the mold. After improving the mold quality, the part is re-processed according to the part processing model to obtain the actual surface of the part for the second round of parts, and then the second springback curve is generated based on the actual springback values ​​of multiple reference measuring points on the actual surface of the part, that is, Fig.11 The curve corresponding to the second round of output. Fig.11 It can be seen that the springback values ​​of the curve corresponding to the second round of output and the curve corresponding to the simulation value are quite different. Fig.11 The springback values ​​of the three curves fluctuate greatly. In the part springback compensation stage, although the springback compensation of the target design surface in the top beam area of ​​the body side can be within the preset threshold range, the curve corresponding to the simulation value shows that its overall size has obvious fluctuations. After the first round of parts, the wave fluctuation trend of the actual springback value is more obvious. Even after the second round of parts are produced after improving the mold quality, the wave fluctuation trend of the actual springback value is still obvious, and the difference with the curve corresponding to the simulation value is too large. At this time, the springback compensation scheme is considered normal, but there are problems with the design parameters of the part design surface. Consider optimizing the relevant parameters of the part design surface, such as eliminating the size fluctuation caused by multiple materials or continuing to adjust the mold gap to reduce the peak of the wave fluctuation.

[0137] In this embodiment, a first springback curve is generated according to the compensated springback values ​​of multiple reference measuring points, and a second springback curve is generated according to the actual springback values ​​of multiple reference measuring points. Then, the effect of springback compensation in different parts areas is determined according to the standard coordinate information of each reference measuring point, the first springback curve, and the second springback curve. By analyzing the difference between the design expectation and the actual springback, the springback compensation strategy is evaluated and optimized. By analyzing the compensated springback values ​​and the actual springback values ​​of multiple reference measuring points and generating corresponding springback curves, the springback compensation effect of different parts areas can be quantified, thereby providing a basis for subsequent process improvement and improvement of part processing accuracy.

[0138] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0139] In one embodiment, a device for determining a rebound compensation effect is provided, and the device for determining a rebound compensation effect corresponds one-to-one to the method for determining a rebound compensation effect in the above embodiment. Fig.12 As shown, the rebound compensation effect determination device includes a first determination module 121, a second determination module 122 and a third determination module 123, and each functional module is described in detail as follows:

[0140] The first determination module 121 is used to determine the compensation springback values ​​of a plurality of pre-calibrated reference measuring points on a target design surface with the design surface of the part as a reference standard, where the target design surface is a design surface obtained after performing a springback compensation simulation on the design surface of the part;

[0141] A second determination module 122 is used to determine the springback compensation qualified rate of the target design profile according to the springback compensation values ​​of the plurality of reference measuring points;

[0142] The third determination module 123 is used to determine the effect of the part springback compensation according to the springback compensation qualified rate.

[0143] Optionally, the first determining module 121 is specifically configured to:

[0144] Obtain standard coordinate information of multiple reference measuring points on the part design surface, and obtain simulated coordinate information of multiple reference measuring points on the target design surface;

[0145] Based on the standard coordinate information and simulated coordinate information of each reference measuring point, the normal displacement of each reference measuring point on the target design surface relative to the part design surface is determined, and the compensatory springback value of each reference measuring point on the target design surface is obtained.

[0146] Optionally, the first determining module 121 is specifically configured to:

[0147] Mark the reference measuring points whose compensation rebound values ​​are within the preset threshold range as qualified measuring points, and count the number of qualified measuring points;

[0148] The qualified rate of multiple reference measuring points is determined according to the number of qualified measuring points, and the springback compensation qualified rate of the target design surface is obtained.

[0149] Optionally, the springback compensation effect determination device further includes an output module 124, which is used to output the design parameters of the target design profile as a part processing model after determining the effect of the part springback compensation according to the springback compensation qualified rate, when the effect of the part springback compensation meets the springback compensation requirement, so as to perform part processing according to the part processing model to obtain a physical part profile;

[0150] The first determination module 121 is also used to determine the actual springback values ​​of multiple reference measuring points on the physical surface of the part, taking the design surface of the part as a reference standard;

[0151] The third determination module 123 is further used to analyze the effect of part springback compensation according to the actual springback values ​​of the multiple reference measuring points.

[0152] Optionally, the third determining module 123 is further configured to:

[0153] According to the standard coordinate information of each reference measuring point on the design surface of the part, the compensatory springback values ​​of multiple reference measuring points and the actual springback values ​​of multiple reference measuring points are associated to determine the compensatory springback value of each reference measuring point and the corresponding actual springback value;

[0154] According to the compensated springback value of each reference measuring point and the corresponding actual springback value, the effect of springback compensation on different part areas is analyzed.

[0155] Optionally, the third determining module 123 is further configured to:

[0156] generating a first springback curve according to the compensated springback values ​​of the plurality of reference measuring points, and generating a second springback curve according to the actual springback values ​​of the plurality of reference measuring points;

[0157] The effects of springback compensation on different regions of the part are determined according to the standard coordinate information of each reference measuring point, the first springback curve and the second springback curve.

[0158] Optionally, the first determining module 121 is further configured to:

[0159] Obtaining standard coordinate information of multiple reference measuring points on the design surface of the part, and obtaining measurement coordinate information of multiple reference measuring points on the actual surface of the part. The measurement coordinate information of multiple reference measuring points is obtained by measuring the position of the measuring points on the actual surface of the part according to the standard coordinate information of the multiple reference measuring points.

[0160] Based on the standard coordinate information and measured coordinate information of each reference measuring point, the normal displacement of each reference measuring point on the actual surface of the part relative to the design surface of the part is determined, and the actual springback value of each reference measuring point on the actual surface of the part is obtained.

[0161] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0162] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0163] The present application also provides an electronic device, such as Fig.13 As shown, the electronic device 2 includes: at least one processor 20, a memory 21, and a computer program 22 stored in the memory 21 and executable on the at least one processor 20, wherein the processor 20 implements the steps in any of the above-mentioned method embodiments when executing the computer program 22, or implements the functions of each module / unit in the above-mentioned device embodiments when executing the computer program 22.

[0164] Exemplarily, the computer program 22 may be divided into one or more modules / units, which are stored in the memory 21 and executed by the processor 20 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 22 in the electronic device 2.

[0165] Those skilled in the art will understand that Fig.13These are merely examples of the electronic device and do not constitute a limitation of the electronic device. The electronic device may include more or fewer components than those shown in the figure, or a combination of certain components, or different components. For example, the computer device may also include input and output devices, network access devices, buses, etc.

[0166] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0167] The memory may be an internal storage unit of the computer device, such as a hard disk or memory of the computer device. The memory may also be an external storage device of the computer device, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the computer device. Furthermore, the memory may also include both an internal storage unit of the computer device and an external storage device.

[0168] An embodiment of the present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it can implement the steps in the above-mentioned method embodiments, or implement the functions of each module / unit in the above-mentioned device embodiments.

[0169] An embodiment of the present application provides a computer program product. When the computer program product runs on a mobile terminal, the mobile terminal can implement the steps in the above-mentioned method embodiments, or implement the functions of the modules / units in the above-mentioned device embodiments.

[0170] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the camera / terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0171] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0172] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0173] In the embodiments provided in the present application, it should be understood that the disclosed devices / equipment and methods can be implemented in other ways. For example, the device / equipment embodiments described above are merely schematic, for example, the division of the modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0174] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0175] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for determining a rebound compensation effect, characterized in that: include: Taking the part design surface as a reference standard, determining the compensation springback values ​​of a plurality of pre-calibrated reference measuring points on the target design surface, wherein the target design surface is a design surface obtained after performing springback compensation simulation on the part design surface; Determining the springback compensation qualified rate of the target design profile according to the compensated springback values ​​of the plurality of reference measuring points; The effect of the part springback compensation is determined according to the springback compensation qualified rate.

2. The method for determining the rebound compensation effect according to claim 1, characterized in that: After determining the effect of part springback compensation according to the springback compensation qualified rate, the method further includes: When the effect of the part springback compensation meets the springback compensation requirement, the design parameters of the target design profile are output as a part processing model, and the part processing model is used to process the part to obtain a physical profile of the part; Taking the designed surface of the part as a reference standard, determining actual springback values ​​of a plurality of reference measuring points on the actual surface of the part; The effect of the part springback compensation is analyzed according to the actual springback values ​​of the plurality of reference measuring points.

3. The method for determining the rebound compensation effect according to claim 2, characterized in that: The analyzing the effect of part springback compensation according to the actual springback values ​​of the plurality of reference measuring points comprises: According to the standard coordinate information of each reference measuring point on the part design surface, the compensated springback values ​​of the multiple reference measuring points and the actual springback values ​​of the multiple reference measuring points are associated to determine the compensated springback value of each reference measuring point and the corresponding actual springback value; The effects of springback compensation on different parts regions are analyzed based on the compensated springback values ​​of the reference measuring points and the corresponding actual springback values.

4. The method for determining the rebound compensation effect according to claim 3, characterized in that: The analyzing the effect of springback compensation on different parts regions according to the compensated springback value of each reference measuring point and the corresponding actual springback value includes: generating a first rebound curve according to the compensated rebound values ​​of the plurality of reference measuring points, and generating a second rebound curve according to the actual rebound values ​​of the plurality of reference measuring points; The effects of springback compensation on different regions of the part are determined according to the standard coordinate information of each reference measuring point, the first springback curve and the second springback curve.

5. The method for determining the rebound compensation effect according to claim 2, characterized in that: The method of determining the actual springback values ​​of the plurality of reference measuring points on the physical surface of the part using the designed surface of the part as a reference standard comprises: Acquire standard coordinate information of a plurality of reference measuring points on the designed surface of the part; Determine the measurement coordinate information of the plurality of reference measuring points on the physical surface of the part according to the standard coordinate information of the plurality of reference measuring points; Based on the standard coordinate information and the measured coordinate information of each reference measuring point, the normal displacement of each reference measuring point on the actual surface of the part relative to the design surface of the part is determined to obtain the actual springback value of each reference measuring point on the actual surface of the part.

6. The method for determining the rebound compensation effect according to any one of claims 1 to 5, characterized in that: Determining the springback compensation qualified rate of the target design profile according to the compensated springback values ​​of the plurality of reference measuring points comprises: Mark the reference measuring points whose compensation rebound values ​​are within a preset threshold range as qualified measuring points, and obtain the number of the qualified measuring points; The qualified rate of the plurality of reference measuring points is determined according to the number of the qualified measuring points, and the springback compensation qualified rate of the target design profile is obtained.

7. A device for determining a rebound compensation effect, characterized in that: include: A first determination module is used to determine the compensation springback values ​​of a plurality of pre-calibrated reference measuring points on a target design surface with the part design surface as a reference standard, wherein the target design surface is a design surface obtained after performing a springback compensation simulation on the part design surface; A second determination module is used to determine the springback compensation qualified rate of the target design profile according to the compensated springback values ​​of the plurality of reference measuring points; The third determination module is used to determine the effect of the part springback compensation according to the springback compensation qualified rate.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for determining the springback compensation effect according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for determining the springback compensation effect according to any one of claims 1 to 6 are implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, which, when executed by a processor, enables the steps of the method for determining the springback compensation effect according to any one of claims 1 to 6 to be implemented.

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