Method and device for determining edge covering force of vehicle door, program product and terminal equipment

Abstract

The invention belongs to the technical field of automobile manufacturing, and particularly relates to a method and device for determining the edge covering force of an automobile door, a computer program product and terminal equipment. The method comprises the following steps: acquiring material characteristics and edge covering characteristics of a target vehicle door of a target vehicle; based on the material characteristics, the edge covering characteristics and a qualified edge covering force coefficient of the target vehicle door, the vehicle door edge covering force of the target vehicle door is determined; wherein the qualified edge covering force coefficient is determined by the edge covering force coefficient of at least one vehicle door with the edge covering quality meeting the quality requirement. By means of the method, the qualified edge covering force coefficient can be accurately and scientifically determined according to the at least one automobile door with the edge covering quality meeting the quality requirement, the appropriate automobile door edge covering force can be efficiently obtained and determined based on the qualified edge covering force coefficient so as to carry out automobile door edge covering, and the production efficiency and the production quality of an automobile can be improved.

Description

Technical Field

[0001] The present application belongs to the field of automobile manufacturing technology, and in particular, relates to a method, device, computer program product and terminal equipment for determining the hemming force of a vehicle door. Background Art

[0002] The door hemming process is an important part of automobile manufacturing. Specifically, the door hemming needs to wrap a part of the edge of the inner panel assembly through the plastic deformation of the edge of the door outer panel; the door hemming process can protect the door from scratches and collisions, enhance the structural strength and rigidity of the door, and improve the sound insulation, heat insulation and appearance of the door. In the process of door hemming, it is necessary to use the hemming mold to apply a suitable force (door hemming force) to the door, otherwise it may cause quality problems of the door after hemming, affecting the rigidity, sealing and appearance of the door. However, in the prior art, the door hemming force is usually determined based on experience, resulting in a long cycle and low efficiency for door hemming, which cannot meet the requirements of modern automobile manufacturing process for production efficiency and production quality; therefore, there is an urgent need for an efficient method for determining the door hemming force to improve production efficiency and production quality. Summary of the invention

[0003] In view of this, embodiments of the present application provide a method, apparatus, computer program product, and terminal device for determining the hemming force of a vehicle door, so as to solve the problem of low efficiency of the method for determining the hemming force of a vehicle door in the prior art.

[0004] A first aspect of an embodiment of the present application provides a method for determining a door hemming force, which may include:

[0005] Obtain material characteristics and edge features of a target door of a target vehicle;

[0006] Determining the door hemming force of the target door based on the material characteristics, the hemming characteristics, and the qualified hemming force coefficient of the target door;

[0007] The qualified edge binding force coefficient is determined by the edge binding force coefficient of at least one vehicle door whose edge binding quality meets the quality requirements.

[0008] A second aspect of an embodiment of the present application provides a device for determining a door hemming force, which may include:

[0009] A feature acquisition module, used to acquire material features and hemming features of a target door of a target vehicle;

[0010] A hemming force determination module is used to determine the door hemming force of the target door based on the material characteristics, the hemming characteristics and the qualified hemming force coefficient of the target door; wherein the qualified hemming force coefficient is determined by the hemming force coefficient of at least one door whose hemming quality meets the quality requirements.

[0011] A third aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of any one of the above-mentioned methods for determining the hemming force of a vehicle door are implemented.

[0012] The fourth aspect of an embodiment of the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the terminal device implements any one of the steps of the above-mentioned method for determining the door hemming force.

[0013] A fifth aspect of an embodiment of the present application provides a computer program product, including a computer program, which, when executed, enables any of the above-mentioned methods for determining the hemming force of a vehicle door to be executed.

[0014] Compared with the prior art, the embodiments of the present application have the following beneficial effects: the embodiments of the present application obtain the material characteristics and hemming characteristics of the target door of the target vehicle; based on the material characteristics, hemming characteristics and qualified hemming force coefficient of the target door, the door hemming force of the target door is determined; wherein the qualified hemming force coefficient is determined by the hemming force coefficient of at least one door whose hemming quality meets the quality requirements. Through the embodiments of the present application, the qualified hemming force coefficient can be accurately and scientifically determined based on at least one door whose hemming quality meets the quality requirements, and based on the qualified hemming force coefficient, the appropriate hemming force can be efficiently determined for door hemming, which helps to improve the production efficiency and production quality of automobiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the water cut of the door before and after the door is hemmed;

[0017] Figure 2 A schematic diagram of the application scenario of door hemming;

[0018] Figure 3 is a schematic diagram of the folding edge mark on the outer surface of the door assembly;

[0019] Figure 4 A schematic diagram for checking the gap between the inner and outer panels of a vehicle door;

[0020] Figure 5 A schematic diagram of the pressure readings collected by the pressure sensor on the hemming die;

[0021] Figure 6 A flow chart of an embodiment of a method for determining the hemming force of a vehicle door in an embodiment of the present application;

[0022] Figure 7 A structural diagram of an embodiment of a device for determining the hemming force of a vehicle door in an embodiment of the present application;

[0023] Figure 8 This is a schematic block diagram of a terminal device in an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, features, and advantages of the invention of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described below are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0026] It should also be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in this application specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0027] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0028] As used in this specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0029] In addition, in the description of the present application, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] Door hemming is an important process in automobile manufacturing. Specifically, door hemming needs to wrap a part of the edge of the inner panel assembly through plastic deformation of the edge of the door outer panel. As an example, the water cut of the door without door hemming and the water cut of the door with door hemming can be as follows: Figure 1 shown.

[0031] The door hemming process can protect the door from scratches and collisions, enhance the structural strength and rigidity of the door, and improve the sound insulation, heat insulation and appearance of the door. In the actual door hemming process, it is necessary to use the hemming mold to apply appropriate force to the door (i.e., the door hemming force), such as Figure 2 As shown; otherwise, it may cause quality problems in the door after edging, affecting the rigidity, sealing and appearance of the door.

[0032] However, in the existing applications of door hemming, the door hemming force is usually determined based on manual experience, resulting in a long door hemming cycle and low efficiency, which cannot meet the requirements of modern automobile manufacturing processes for production efficiency and production quality; therefore, there is an urgent need for an efficient method for determining the door hemming force to improve production efficiency and production quality.

[0033] In view of this, embodiments of the present application provide a method, apparatus, computer program product, and terminal device for determining the hemming force of a vehicle door, so as to solve the problem of low efficiency of the method for determining the hemming force of a vehicle door in the prior art.

[0034] It should be noted that the execution subject of the method of the present application is a terminal device, specifically, it can be any computing device such as a desktop computer, workstation, notebook, handheld computer, etc., or it can be other computing devices.

[0035] In order to improve the efficiency of door hemming, the embodiment of the present application can establish a mathematical model for calculating the door hemming force (hereinafter referred to as the hemming force calculation model) and can efficiently determine the door hemming force required for each door during the door hemming process based on the hemming force calculation model.

[0036] The following will first introduce the hemming force calculation model in the embodiment of the present application.

[0037] Specifically, the hemming force calculation model in the embodiment of the present application can be set based on the material characteristics, hemming characteristics and qualified hemming force coefficient of the vehicle door.

[0038] Here, the material characteristics of the vehicle door may specifically include the thickness of the outer panel material of the vehicle door and the yield strength of the outer panel material; and the edge characteristics of the vehicle door may specifically include the edge length and edge angle of the vehicle door.

[0039] In the embodiment of the present application, the initial hemming force calculation model can be specifically expressed as:

[0040] P=K*L*T*σ / sinθ,

[0041] Among them, P is the door edge force, L is the door edge length, T is the thickness of the door outer panel material, σ is the yield strength of the door outer panel material, θ is the door edge angle, and K is the edge force coefficient.

[0042] In the embodiment of the present application, a suitable hemming force coefficient (hereinafter referred to as a qualified hemming force coefficient) can be determined based on at least one vehicle door whose hemming quality meets the quality requirements. Based on the qualified hemming force coefficient, the hemming force calculation model in the embodiment of the present application can be determined. By using the determined hemming force calculation model, the hemming force required for the vehicle door can be accurately and scientifically calculated, and there is no need to conduct multiple door hemming experiments, which helps to improve the efficiency of door hemming.

[0043] It should be understood that the edge binding force coefficient in the embodiment of the present application can be a specific value or a range determined by two different values; for example, the edge binding force coefficient can be a value of 1, and for another example, the edge binding force coefficient can be a range determined by values ​​1 and 2 (i.e., value 1 to value 2).

[0044] Specifically, in the embodiment of the present application, the door hemming can be performed on a preset number of multiple doors, and the door hemming forces borne by the multiple doors during the door hemming process can be obtained; then, the hemming force coefficient of each door can be determined based on the door hemming force of each door. The specific value of the preset number can be specific and situational according to actual needs, and the embodiment of the present application does not limit this; for example, the specific value of the preset number can be set to 10, 15, 20, etc.

[0045] In addition, each of the above-mentioned doors is a door corresponding to any car model, that is, any door corresponds to any car model. It should be understood that the above-mentioned doors may include only doors corresponding to one car model, or may include doors corresponding to multiple car models. For example, if the preset number is 10, then the door hemming forces corresponding to 10 doors can be obtained, and the 10 doors are all doors corresponding to car model 1; or, the 10 doors specifically include 2 doors corresponding to car model 1, 3 doors corresponding to car model 2, 4 doors corresponding to car model 3, and 1 door corresponding to car model 4.

[0046] Afterwards, the hemming force coefficient of each door may be determined based on the door hemming force of each door; specifically, the hemming force coefficient corresponding to each door may be calculated based on the material characteristics, hemming characteristics and door hemming force of each door.

[0047] In the embodiment of the present application, the calculation formula of the hemming force coefficient K can be obtained according to the above hemming force calculation model, which can be specifically expressed as:

[0048]

[0049] Here, by substituting the material characteristics, edge characteristics and edge force of the vehicle door into the above formula, the edge force coefficient corresponding to the vehicle door can be calculated; based on this, the edge force coefficient corresponding to each vehicle door can be calculated.

[0050] Afterwards, at least one door whose edging quality meets the quality requirements can be screened out from the various doors, and the qualified edging force coefficient of the embodiment of the present application can be determined based on the edging force coefficient corresponding to the at least one screened door.

[0051] In actual application, if the door hemming force is small during the door hemming process, it may cause the inner and outer panels of the door to be not tightly hemmed after hemming; if the door hemming force is large during the door hemming process, it may cause folding marks on the outer surface of the door assembly after hemming, such as Figure 3 As shown; therefore, in a specific implementation of the embodiment of the present application, the quality requirements of the door after hemming may include the requirements of the tightness of the hemming and / or the requirements of the appearance of the door. After the door is hemmed with the corresponding door hemming force, the quality of the hemming of the door can be determined based on the tightness of the hemming and / or the appearance of the door. If the tightness of the hemming of a door meets the requirements and / or the appearance of the door meets the requirements, it can be determined that the quality of the hemming of the door meets the quality requirements; if the tightness of the hemming of a door does not meet the requirements and / or the appearance of the door does not meet the requirements, it can be determined that the quality of the hemming of the door does not meet the quality requirements.

[0052] In the above implementation, the requirements for the tightness of the door edging and the appearance of the door can be set according to actual needs, and this application does not limit this.

[0053] For example, the requirement for the tightness of the door edging may be: the edging of the inner and outer panels of the door cannot fit into a gap feeler gauge of a preset thickness (e.g., 0.1 mm); the requirement for the door appearance may be: no folding marks appear on the outer surface of the door assembly.

[0054] In the embodiment of the present application, the hemming quality of the vehicle door can be checked to determine the hemming quality of the vehicle door.

[0055] For example, if the quality requirements include the tightness of the hemming and the appearance of the doors, the gap between the inner and outer panels of each door can be checked during the quality inspection of the doors after hemming. Figure 4 As shown, the vehicle doors whose tightness of edging meets the requirements are determined accordingly; in addition, the appearance of each vehicle door can be inspected to determine the vehicle doors whose appearance meets the requirements; thereafter, the vehicle doors whose tightness of edging and door appearance meet the requirements at the same time can be determined, and the vehicle doors whose tightness of edging and door appearance meet the requirements at the same time can be determined as the vehicle doors whose edging quality meets the quality requirements.

[0056] For another example, if the quality requirements only include the requirement for the tightness of edging, then when screening the vehicle doors whose edging quality meets the quality requirements, the gap between the inner and outer panels of each door can be checked to determine the vehicle doors whose edging tightness meets the requirements, and the vehicle doors whose edging tightness meets the requirements can be determined as the vehicle doors whose edging quality meets the quality requirements.

[0057] For another example, if the quality requirements only include requirements for the appearance of vehicle doors, then when screening vehicle doors whose edging quality meets the quality requirements, each vehicle door can be inspected for appearance to determine the vehicle doors whose appearance meets the requirements, and the vehicle doors whose door appearance meets the requirements can be determined as the vehicle doors whose edging quality meets the quality requirements.

[0058] In an embodiment of the present application, a qualified hemming force coefficient can be determined based on the hemming force coefficient of a vehicle door whose hemming quality meets the quality requirements; specifically, if only one vehicle door whose hemming quality meets the quality requirements is determined, the hemming force coefficient of the vehicle door can be directly determined as the qualified hemming force coefficient; if two or more vehicle doors whose hemming quality meets the quality requirements are determined, the maximum and minimum values ​​of the hemming force coefficients of the two or more vehicle doors can be determined, and the qualified hemming force coefficient can be determined based on the range determined by the maximum and minimum values ​​of the hemming force coefficient.

[0059] For example, the door whose edge binding quality meets the quality requirements is door 1, and the edge binding force coefficient of door 1 can be directly determined as the qualified edge binding force coefficient; here, the edge binding force coefficient of door 1 is 0.33, and the qualified edge binding force coefficient can be determined to be 0.33.

[0060] For another example, the doors whose edge binding quality meets the quality requirements are door 2, door 4, door 5, door 7, door 8, and door 11. The maximum and minimum values ​​of the edge binding force coefficients corresponding to door 2, door 4, door 5, door 7, door 8, and door 11 can be determined, and the range composed of the maximum and minimum values ​​can be determined as the qualified edge binding force coefficients; among them, the edge binding force coefficient of door 2 is 0.24, the edge binding force coefficient of door 4 is 0.29, the edge binding force coefficient of door 5 is 0.41, the edge binding force coefficient of door 7 is 0.43, the edge binding force coefficient of door 8 is 0.33, and the edge binding force coefficient of door 11 is 0.48. It can be determined that the maximum value of each edge binding force coefficient is 0.48, and the minimum value of each edge binding force coefficient is 0.24. Therefore, it can be determined that the qualified edge binding force coefficient is: 0.24≤K≤0.48.

[0061] Based on the qualified hemming force coefficient, a hemming force calculation model can be determined. By using the hemming force calculation model, the hemming force that the hemming mold needs to apply to each door when the door is hemmed can be efficiently determined.

[0062] For ease of understanding, the process of determining the above-mentioned qualified hemming force coefficient will be explained below with reference to specific examples.

[0063] Specifically, the door hemming force corresponding to each door can be obtained. The doors can be doors of the same model or doors of different models. In this example, the door hemming force corresponding to 15 doors of the same model can be obtained.

[0064] In this example, the force applied by the hemming mold to the vehicle door during hemming of the vehicle door can be collected by means of a pressure sensor provided on the hemming mold, and the collected force can be determined as the door hemming force corresponding to the vehicle door.

[0065] For example, the pressure readings collected by the pressure sensor on the hemming die can be Figure 5 As shown, the maximum value among the pressure readings can be used as the door hemming force corresponding to the vehicle door, or the value with the highest frequency among the pressure readings can be used as the door hemming force corresponding to the vehicle door, that is, the stable pressure reading during the door hemming process can be used as the door hemming force corresponding to the vehicle door.

[0066] In this example, the door edge force corresponding to door 1 is 39945 N, the door edge force corresponding to door 2 is 55150 N, the door edge force corresponding to door 3 is 62465 N, the door edge force corresponding to door 4 is 76665 N, the door edge force corresponding to door 5 is 77775 N, the door edge force corresponding to door 6 is 80275 N, the door edge force corresponding to door 7 is 81875 N, and the door edge force corresponding to door 8 is 81875 N. The door hemming force of door 9 is 82225N, the door hemming force corresponding to door 9 is 93990N, the door hemming force corresponding to door 10 is 94800N, the door hemming force corresponding to door 11 is 95695N, the door hemming force corresponding to door 12 is 97185N, the door hemming force corresponding to door 13 is 105170N, the door hemming force corresponding to door 14 is 115875N and the door hemming force corresponding to door 15 is 125660N.

[0067] In addition, the material characteristics and edge characteristics of each door can be obtained, and based on the material characteristics, edge characteristics and door edge force of each door, the edge force coefficient corresponding to each door can be calculated.

[0068] For each door, the material characteristics of the door specifically include the thickness of the outer panel material of the door and the yield strength of the outer panel material, and the edge characteristics of the door specifically include the edge length and edge angle of the door. Since the material characteristics and edge characteristics of the door are usually determined in the door design stage, the material characteristics and edge characteristics of the door can be obtained from the relevant design documents; or the material characteristics and edge characteristics of the door can be obtained through actual measurement; or the material characteristics and edge characteristics of the door can be provided by the user.

[0069] Afterwards, the hemming force coefficient corresponding to each door can be calculated based on the thickness of the outer panel material corresponding to each door, the yield strength of the outer panel material, the hemming length and the hemming angle. Here, the specific calculation formula of the hemming force coefficient is:

[0070]

[0071] In this example, the thickness T of the outer panel material of the vehicle door is specifically 0.65 millimeters (mm), the yield strength of the outer panel material of the vehicle door is specifically 181 megapascals (MPa), the edge length L of the vehicle door is specifically 880 mm, and the edge angle θ of the vehicle door is specifically 26 degrees (°); based on this, the edge force coefficient corresponding to each vehicle door can be calculated.

[0072] Specifically, in this example, the calculated edge binding force coefficient corresponding to door 1 is 0.17, the edge binding force coefficient corresponding to door 2 is 0.23, the edge binding force coefficient corresponding to door 3 is 0.26, the edge binding force coefficient corresponding to door 4 is 0.32, the edge binding force coefficient corresponding to door 5 is 0.33, the edge binding force coefficient corresponding to door 6 is 0.34, the edge binding force coefficient corresponding to door 7 is 0.35, the edge binding force coefficient corresponding to door 8 is 0.35, the edge binding force coefficient corresponding to door 9 is 0.40, the edge binding force coefficient corresponding to door 10 is 0.40, the edge binding force coefficient corresponding to door 11 is 0.41, the edge binding force coefficient corresponding to door 12 is 0.41, the edge binding force coefficient corresponding to door 13 is 0.45, the edge binding force coefficient corresponding to door 14 is 0.49, and the edge binding force coefficient corresponding to door 15 is 0.53.

[0073] After that, the quality of the hemming of each door after hemming can be checked, and at least one door whose hemming quality meets the quality requirements can be determined from each door. Specifically, the quality requirements in this example include the requirements for the tightness of the hemming and the requirements for the appearance of the door. Therefore, the gap between the inner and outer door panels of each door after hemming can be checked to determine the door whose hemming tightness meets the requirements; the appearance of each door after hemming can also be checked to determine the door whose appearance meets the requirements; after that, the door whose hemming tightness and the door appearance meet the requirements can be determined, and the door whose hemming tightness and the door appearance meet the requirements can be determined as the door whose hemming quality meets the quality requirements.

[0074] In this example, it can be determined that the doors whose edge binding quality meets the quality requirements include: door 3, door 4, door 5, door 6, door 7, door 8, door 9, door 10, door 11, door 12 and door 13. Therefore, the maximum and minimum values ​​of the edge binding force coefficients corresponding to door 3, door 4, door 5, door 6, door 7, door 8, door 9, door 10, door 11, door 12 and door 13 can be determined; the maximum value of the above edge binding force coefficients is 0.45, and the minimum value is 0.26. Based on this, it can be determined that the qualified edge binding force coefficient is: 0.26≤K≤0.45.

[0075] Based on the qualified hemming force coefficient, the hemming force calculation model can be determined; using the hemming force calculation model, the door hemming force required for each door can be efficiently determined, so that the hemming mold can be accurately controlled to complete high-quality door hemming work and maintain a relatively stable door hemming quality.

[0076] Specifically, see Figure 6 In an embodiment of the present application, a method for determining the hemming force of a vehicle door may include steps S601 to S602:

[0077] Step S601: Acquire material characteristics and hemming characteristics of a target door of a target vehicle.

[0078] In an embodiment of the present application, when it is necessary to perform door edging on a vehicle door, a more appropriate door edging force for edging the door can be calculated based on the material characteristics, edging characteristics and a predetermined qualified edging force coefficient of the door.

[0079] Here, the vehicle that needs to be edged with door wrapping may be referred to as a target vehicle, and the door that needs to be edged with door wrapping in the target vehicle may be referred to as a target door.

[0080] Specifically, the thickness of the outer panel material of the target vehicle door and the yield strength of the outer panel material (ie, material characteristics) may be obtained, and the hemming length and hemming angle (ie, hemming mold characteristics) of the target vehicle door may also be obtained.

[0081] It should be understood that, usually, the thickness of the outer panel material of the target vehicle door and the yield strength of the outer panel material are determined in the vehicle door design stage, so the thickness of the outer panel material of the target vehicle door and the yield strength of the outer panel material can be obtained from the relevant design documents; alternatively, the thickness of the outer panel material of the target vehicle door and the yield strength of the outer panel material can be determined through actual measurement; alternatively, the thickness of the outer panel material of the target vehicle door and the yield strength of the outer panel material can be provided by the user; similarly, the hemming length and hemming angle of the target vehicle door are usually determined in the hemming process flow design stage, so the hemming length and hemming angle of the target vehicle door can be obtained from the relevant design documents; alternatively, the hemming length and hemming angle of the target vehicle door can be provided by the user.

[0082] Step S602: determining the door hemming force of the target door based on the material characteristics, hemming characteristics and qualified hemming force coefficient of the target door.

[0083] After determining the material characteristics and hemming mold characteristics of the target door, the qualified hemming force coefficient determined by the above process can be used to calculate the door hemming force corresponding to the target door. Specifically, the material characteristics, hemming characteristics and qualified hemming force coefficient of the target door can be substituted into the above hemming force calculation model to calculate the door hemming force corresponding to the target door.

[0084] It should be understood that, since the qualified edge-binding coefficient can be a specific value or a range, the calculated door edge-binding force can also be a specific value or a range accordingly.

[0085] For example, if the qualified edge wrapping coefficient is coefficient 1, the door edge wrapping force 1 corresponding to the target door can be calculated; for another example, if the qualified edge wrapping coefficient is the range composed of coefficient 1 and coefficient 2, that is, coefficient 1 to coefficient 2, based on coefficient 1, the door edge wrapping force 1 of the target door can be calculated, and based on coefficient 2, the door edge wrapping force 2 of the target door can be calculated; therefore, it can be determined that the door edge wrapping force of the target door is the range composed of door edge wrapping force 1 and door edge wrapping force 2, that is, door edge wrapping force 1 to door edge wrapping force 2.

[0086] In a specific implementation of the embodiment of the present application, since the material characteristics and edging characteristics of each door of the same model are the same, the door edging force applicable to each door of the same model during door edging is the same; in order to improve the edging efficiency, a first mapping relationship can be constructed based on the door edging force of each model and the corresponding door, and when the door is edged, the door edging force corresponding to the door of any model can be efficiently determined. Specifically, the door edging force applicable to the door of each model can be determined according to the above method, and then the first mapping relationship can be established based on the door edging force of each model and the corresponding door. When the target door is edged, the model corresponding to the target door (hereinafter referred to as the target model) can be determined, and then the door edging force corresponding to the target model can be queried in the first mapping relationship, and the door edging force obtained by the query can be applied to the door edging of the target door. For example, according to the above process, it can be calculated that the door edge force applicable to the door of model 1 is edge force 1, the door edge force applicable to the door of model 2 is edge force 5, and the door edge force applicable to the door of model 3 is edge force 3. Therefore, the first mapping relationship shown in the following table can be constructed:

[0087] Model Door hemming force Model 1 Hemming force 1 Model 2 Hemming force 5 Model 3 Hemming force 3

[0088] If the target vehicle model is vehicle model 2, it can be found in the first mapping relationship (the above table) that the door hemming force corresponding to vehicle model 2 is hemming force 5, and hemming force 5 can be applied to the door hemming of the door of vehicle model 2.

[0089] In a specific implementation of the embodiment of the present application, after the door hemming force of the target door is determined, the door hemming of the target door can be performed using an hemming mold corresponding to the target door (hereinafter referred to as the target hemming mold). Specifically, if the determined door hemming force is a specific value, the target hemming mold can be controlled to apply the door hemming force to the target door; if the determined door hemming force is a range, the target hemming mold can be controlled to apply any door hemming force within the range to the target door.

[0090] In a specific implementation of the embodiment of the present application, since each door of the same model will use the same edging mold when edging the door, and the doors of different models usually use different edging molds, in order to improve the efficiency of door edging, the embodiment of the present application can establish a mapping relationship between the model and the edging mold (hereinafter referred to as the second mapping relationship). When edging the target door, the edging mold corresponding to the target model can be queried from the second mapping relationship, and the edging mold can be determined as the target edging mold. After that, the target edging mold can be used to perform door edging on the target door. For example, the door of model 1 needs to use edging mold 3 for door edging, the door of model 2 needs to use edging mold 1 for door edging, and the door of model 3 needs to use edging mold 2 for door edging. Based on this, the second mapping relationship shown in the following table can be constructed:

[0091] Model Edge wrapping mold Model 1 Edge mold 3 Model 2 Edge mold 1 Model 3 Edge mold 2

[0092] If the target vehicle model is model 2, it can be found in the second mapping relationship (above table) that the hemming mold corresponding to model 2 is hemming mold 1, and hemming mold 1 can be determined as the target hemming mold; then, based on the door hemming force of the target door, hemming mold 1 can be controlled to perform door hemming on the target door.

[0093] In summary, the embodiment of the present application obtains the material characteristics and hemming characteristics of the target door of the target vehicle; based on the material characteristics, the hemming characteristics and the qualified hemming force coefficient of the target door, the door hemming force of the target door is determined; wherein the qualified hemming force coefficient is determined by the hemming force coefficient of at least one door whose hemming quality meets the quality requirements. Through the above method, the qualified hemming force coefficient can be accurately and scientifically determined based on at least one door whose hemming quality meets the quality requirements. Based on the qualified hemming force coefficient, the appropriate door hemming force can be efficiently determined for door hemming, which helps to improve the production efficiency and production quality of automobiles.

[0094] It should be understood that the size of the serial numbers of the steps in the above embodiments does not 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 embodiments of the present application.

[0095] Corresponding to the method for determining the door hemming force described in the above embodiment, Figure 7 A structural diagram of an embodiment of a device for determining the hemming force of a vehicle door provided in an embodiment of the present application is shown.

[0096] In an embodiment of the present application, a device for determining a door hemming force may include:

[0097] A feature acquisition module 701 is used to acquire material features and hemming features of a target door of a target vehicle;

[0098] The hemming force determination module 702 is used to determine the door hemming force of the target door based on the material characteristics, the hemming characteristics and the qualified hemming force coefficient of the target door; wherein the qualified hemming force coefficient is determined by the hemming force coefficient of at least one door whose hemming quality meets the quality requirements.

[0099] In a specific implementation of the embodiment of the present application, the device further includes:

[0100] A first coefficient determination module, used to determine the edge binding force coefficient of each of the plurality of vehicle doors; the edge binding force coefficient of the vehicle door is at least determined by the door edge binding force corresponding to the vehicle door;

[0101] A quality determination module, used to determine the quality of the hemming of each door after the door is hemmed using the corresponding door hemming force;

[0102] The second coefficient determination module is used to determine the qualified edge binding force coefficient based on the edge binding force coefficient of each of the vehicle doors and the edge binding quality of each of the vehicle doors.

[0103] In a specific implementation of the embodiment of the present application, the coefficient second determination module includes:

[0104] A first coefficient determination unit, configured to determine a hemming force coefficient corresponding to at least one of the plurality of vehicle doors based on the hemming force coefficient of each of the vehicle doors and the hemming quality of each of the vehicle doors; wherein the hemming quality of at least one of the vehicle doors meets the quality requirements;

[0105] The second coefficient determination unit is used to determine the qualified edge binding force coefficient according to the edge binding force coefficient corresponding to at least one of the vehicle doors.

[0106] In a specific implementation of the embodiment of the present application, the coefficient first determination module includes:

[0107] The hemming force acquisition submodule is used to acquire the door hemming force corresponding to each of the vehicle doors; wherein any of the vehicle doors corresponds to any vehicle model;

[0108] The coefficient determination submodule is used to calculate the edge binding force coefficient corresponding to each of the vehicle doors based on the material characteristics, the edge binding characteristics and the edge binding force of each of the vehicle doors.

[0109] In a specific implementation of the embodiment of the present application, if the tightness of the edging of the vehicle door meets the requirements and / or the appearance of the vehicle door meets the requirements, it is determined that the quality of the edging of the vehicle door meets the quality requirements.

[0110] In a specific implementation of the embodiment of the present application, the material characteristics of the target vehicle door include the thickness of the outer panel material of the target vehicle door and the yield strength of the outer panel material, and the edging characteristics of the target vehicle door include the edging length and edging angle of the target vehicle door.

[0111] In a specific implementation of the embodiment of the present application, the device further includes:

[0112] The door hemming module is used to perform door hemming on the target door based on the door hemming force of the target door and using a target hemming mold corresponding to the target door.

[0113] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices, modules and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0114] 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.

[0115] Figure 8 A schematic block diagram of a terminal device provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0116] like Figure 8 As shown, the terminal device 8 of this embodiment includes: a processor 80, a memory 81, and a computer program 82 stored in the memory 81 and executable on the processor 80. When the processor 80 executes the computer program 82, the steps in the above-mentioned method for determining the door hemming force are implemented, for example Figure 6 Alternatively, when the processor 80 executes the computer program 82, the functions of each module / unit in the above-mentioned device embodiments are realized, for example Figure 7 The functions of modules 701 to 702 are shown.

[0117] Exemplarily, the computer program 82 may be divided into one or more modules / units, which are stored in the memory 81 and executed by the processor 80 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 82 in the terminal device 8.

[0118] Those skilled in the art will understand that Figure 8It is only an example of the terminal device 8 and does not constitute a limitation of the terminal device 8. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the terminal device 8 may also include input and output devices, network access devices, buses, etc.

[0119] The processor 80 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.

[0120] The memory 81 may be an internal storage unit of the terminal device 8, such as a hard disk or memory of the terminal device 8. The memory 81 may also be an external storage device of the terminal device 8, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the terminal device 8. Further, the memory 81 may also include both an internal storage unit of the terminal device 8 and an external storage device. The memory 81 is used to store the computer program and other programs and data required by the terminal device 8. The memory 81 may also be used to temporarily store data that has been output or is to be output.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] In the embodiments provided in the present application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. 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.

[0125] 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.

[0126] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0127] If the integrated module / 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, and can also 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 storage medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage media do not include electric carrier signals and telecommunication signals.

[0128] 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 the hemming force of a vehicle door, characterized in that: include: Obtain material characteristics and edge features of a target door of a target vehicle; Determining the door hemming force of the target door based on the material characteristics, the hemming characteristics, and the qualified hemming force coefficient of the target door; The qualified edge binding force coefficient is determined by the edge binding force coefficient of at least one vehicle door whose edge binding quality meets the quality requirements.

2. The method for determining the door hemming force according to claim 1, characterized in that: The process of determining the qualified hemming force coefficient includes: Determine the edge binding force coefficient of each of the plurality of vehicle doors; the edge binding force coefficient of the vehicle door is determined at least by the door edge binding force corresponding to the vehicle door; Determine the hemming quality of each of the vehicle doors after the hemming is performed using the corresponding vehicle door hemming force; The qualified edge binding force coefficient is determined based on the edge binding force coefficient of each of the vehicle doors and the edge binding quality of each of the vehicle doors.

3. The method for determining the door hemming force according to claim 2, characterized in that: Determining the qualified edge binding force coefficient based on the edge binding force coefficient of each of the vehicle doors and the edge binding quality of each of the vehicle doors includes: Based on the hemming force coefficient of each of the vehicle doors and the hemming quality of each of the vehicle doors, determining the hemming force coefficient corresponding to at least one of the vehicle doors from the plurality of vehicle doors; wherein the hemming quality of at least one of the vehicle doors meets the quality requirements; The qualified edge binding force coefficient is determined according to the edge binding force coefficient corresponding to at least one of the vehicle doors.

4. The method for determining the door hemming force according to claim 2, characterized in that: The determining of the hemming force coefficient of each of the plurality of vehicle doors comprises: Obtaining the door hemming force corresponding to each of the vehicle doors; wherein any of the vehicle doors corresponds to any vehicle model; Based on the material characteristics, the edge binding characteristics and the door edge binding force of each of the vehicle doors, the edge binding force coefficient corresponding to each of the vehicle doors is calculated respectively.

5. The method for determining the door hemming force according to claim 3, characterized in that: If the tightness of the edging of the vehicle door meets the requirements and / or the appearance of the vehicle door meets the requirements, it is determined that the quality of the edging of the vehicle door meets the quality requirements.

6. The method for determining the hemming force of a vehicle door according to any one of claims 1 to 5, characterized in that: The material characteristics of the target vehicle door include the thickness of the outer panel material of the target vehicle door and the yield strength of the outer panel material, and the edge binding characteristics of the target vehicle door include the edge binding length and edge binding angle of the target vehicle door.

7. The method for determining the hemming force of a vehicle door according to any one of claims 1 to 5, characterized in that: After determining the door hemming force of the target door based on the material characteristics, the hemming characteristics, and the qualified hemming force coefficient of the target door, the method further includes: Based on the door hemming force of the target door, the target door is hemmed using a target hemming mold corresponding to the target door.

8. A device for determining the hemming force of a vehicle door, characterized in that: include: A feature acquisition module, used to acquire material features and hemming features of a target door of a target vehicle; A hemming force determination module is used to determine the door hemming force of the target door based on the material characteristics, the hemming characteristics and the qualified hemming force coefficient of the target door; wherein the qualified hemming force coefficient is determined by the hemming force coefficient of at least one door whose hemming quality meets the quality requirements.

9. A computer program product, characterized in that The invention comprises a computer program, and when the computer program is executed, the method for determining the edge binding force of a vehicle door according to any one of claims 1 to 7 is executed.

10. A terminal 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 terminal device implements the steps of the method for determining the hemming force of a vehicle door according to any one of claims 1 to 7.

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