Riveted joint quality detection method, system and device

Abstract

The invention discloses a riveting joint quality detection method, system and device, and the method comprises the steps: obtaining the height of a to-be-detected riveting joint relative to the surface of a connected material, i.e., contour data and appearance image data, and after the appearance image data, determining whether the contour data is in a preset contour data qualified range or not; and determining whether the to-be-detected riveting joint is a qualified riveting joint according to the preset appearance image data and whether the appearance image data is within a preset appearance image data qualified range. Therefore, manual judgment is not needed, data comparison can be automatically carried out, quality detection is carried out on the riveted joint, and the quality detection efficiency of the riveted joint is improved.

Description

Technical Field

[0001] The present invention relates to the field of rivet quality inspection, and in particular to a method, system and device for inspecting the quality of riveted joints. Background Art

[0002] The process of riveting is to insert the rivet rod in the rivet hole into the hole of the material to be connected, and use a tool such as a rivet gun or hammer to apply pressure to the tail of the rivet, causing the rivet rod to plastically deform and form a butt head, thereby increasing the contact area between the rivet and the connected material, thereby improving the strength and stability of the connection. The rivet collar is an annular groove, the main function of which is to fix the rivet and prevent it from loosening or falling off during use, so as to achieve the connection of multiple materials. After the riveting is completed, the riveted joint needs to be quality inspected. Usually, the dimensional parameters of the riveted joint are collected using measuring tools or templates, and the quality of the riveted joint is manually determined. Therefore, a lot of human resources are wasted for measurement and quality inspection. Summary of the Invention

[0003] The purpose of the present invention is to provide a method, system and device for detecting the quality of riveted joints, which can automatically compare data without manual judgment, thereby performing quality detection on riveted joints and improving the efficiency of quality detection of riveted joints.

[0004] In order to solve the above technical problems, the present invention provides a riveted joint quality detection method, comprising:

[0005] Acquiring contour data and appearance image data of the riveted joint to be tested; the contour data includes the height of the riveted joint to be tested relative to the surface of the connected materials;

[0006] Comparing the outline data with a preset outline data qualified range, and comparing the appearance image data with a preset appearance image data qualified range;

[0007] If the contour data is within a preset contour data qualified range, and the appearance image data is within a preset appearance image data qualified range, then the riveted joint to be tested is determined to be a qualified riveted joint.

[0008] Preferably, the contour data of the riveted joint to be tested is obtained; the contour data is the height of the riveted joint to be tested relative to the surface of the connected material, including:

[0009] Establishing a plane rectangular coordinate system with the center of the riveted joint to be tested as the origin, taking a preset direction as the positive direction of the x-axis, and determining the positive direction of the y-axis based on the positive direction of the x-axis;

[0010] The center of the cross laser is aligned with the origin of the plane rectangular coordinate system, and two mutually perpendicular laser lines are aligned with the x-axis and y-axis of the plane rectangular coordinate system respectively, so as to determine the profile data based on the total propagation distance of the reflected waves of the laser lines of the cross laser. The profile data includes a first height of the riveted joint to be measured relative to the surface of the connected materials on the x-axis and a second height relative to the surface of the connected materials on the y-axis.

[0011] Preferably, the center of the cross laser is aligned with the origin of the plane rectangular coordinate system, and the two mutually perpendicular laser lines are aligned with the x-axis and y-axis of the plane rectangular coordinate system, so as to determine the profile data based on the total propagation distance of the reflected waves of the laser lines of the cross laser, wherein the profile data includes a first height of the riveted joint to be measured relative to the surface of the connected materials on the x-axis and a second height relative to the surface of the connected materials on the y-axis, and further includes:

[0012] With the center of the riveted joint to be tested as the origin, establish an x-axis-height coordinate system and a y-axis-height coordinate system; the longitudinal axes of the x-axis-height coordinate system and the y-axis-height coordinate system are both the height of the riveted joint to be tested relative to the surface of the connected material;

[0013] Representing and recording a first height of the riveted joint to be tested on the x-axis relative to the surface of the connected materials in the x-axis-height coordinate system;

[0014] The second height of the riveted joint to be measured on the y-axis relative to the surface of the connected materials is represented and recorded in the y-axis-height coordinate system.

[0015] Preferably, obtaining appearance image data of the riveted joint to be tested includes:

[0016] Acquire a photographed side unfolded appearance image of the riveted joint to be tested;

[0017] An angle-height coordinate system is established with a preset position where the riveted joint to be tested is connected to the connected material in the side unfolded appearance image as the origin, the height relative to the surface of the connected material as the vertical axis, and the angle along the side of the riveted joint to be tested as the horizontal axis; the side unfolded appearance image of the riveted joint to be tested in the angle-height coordinate system is the appearance image data.

[0018] Preferably, it also includes:

[0019] Acquiring a preset qualified contour database and a preset qualified appearance image database, wherein the preset qualified contour database includes predetermined contour data of each qualified riveted joint, and the preset qualified appearance image database includes predetermined appearance image data of each qualified riveted joint;

[0020] Determining the preset contour data qualified range based on the contour data of each qualified riveted joint in the preset qualified contour database;

[0021] The preset qualified range of appearance image data is determined based on the appearance image data of each qualified riveted joint in the preset qualified appearance image database.

[0022] Preferably, after comparing the outline data with a preset outline data qualified range and comparing the appearance image data with a preset appearance image data qualified range, the method further includes:

[0023] If the profile data is within the preset profile data qualified range, the profile data of the riveted joint to be tested is added to the preset qualified profile database;

[0024] If the appearance image data is within a preset qualified range of appearance image data, the appearance image data of the riveted joint to be tested is added to the preset qualified appearance image database.

[0025] Preferably, after obtaining the contour data and appearance image data of the riveted joint to be tested, the method further includes:

[0026] If the contour data is not within the preset contour data qualified range, determining that the contour data of the riveted joint to be tested is unqualified contour data;

[0027] If the appearance image data is not within the preset appearance image data qualified range, the appearance image data of the riveted joint to be tested is determined to be unqualified appearance image data.

[0028] Preferably, after determining that the appearance image data of the riveted joint to be tested is unqualified appearance image data, the method further includes:

[0029] storing the unqualified profile data in an unqualified profile database;

[0030] The unqualified appearance image data is stored in an unqualified appearance image database.

[0031] In order to solve the above technical problems, the present application also provides a riveted joint quality detection system, comprising:

[0032] A data acquisition unit, configured to acquire contour data and appearance image data of the riveted joint to be tested; the contour data being the height of the riveted joint to be tested relative to the surface of the connected material;

[0033] a data comparison unit, configured to compare the contour data with a preset contour data qualified range, and to compare the appearance image data with a preset appearance image data qualified range;

[0034] The joint quality determination unit is used to determine that the riveted joint to be tested is a qualified riveted joint when the contour data is within a preset contour data qualified range and the appearance image data is within a preset appearance image data qualified range.

[0035] In order to solve the above technical problems, the present application also provides a riveted joint quality detection device, comprising:

[0036] memory for storing computer programs;

[0037] The processor is used to implement the steps of the riveted joint quality detection method as described above when executing the computer program.

[0038] This application provides a method, system, and device for inspecting the quality of riveted joints. After obtaining the height of the riveted joint to be inspected relative to the surface of the material being joined, namely, the profile data and appearance image data, and the appearance image data, the method determines whether the riveted joint to be inspected is a qualified riveted joint based on whether the profile data falls within a preset qualified profile data range and whether the appearance image data falls within a preset qualified appearance image data range. This eliminates the need for manual judgment and allows for automatic data comparison, thereby improving the efficiency of quality inspection for riveted joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A schematic diagram of a flow chart of a riveted joint quality inspection method provided in this application;

[0041] Figure 2 A schematic diagram of a riveted joint provided in the prior art;

[0042] Figure 3 A schematic diagram of a method for detecting riveted joint data in the prior art;

[0043] Figure 4 A schematic diagram of establishing a plane rectangular coordinate system provided in this application;

[0044] Figure 5 A schematic diagram of the height of a riveted joint to be measured using an x-axis-height coordinate system and a y-axis-height coordinate system provided in the present application;

[0045] Figure 6A schematic diagram of a top view of a riveted joint to be tested provided in this application;

[0046] Figure 7 A schematic diagram of establishing an angle-height coordinate system provided in this application;

[0047] Figure 8 A schematic diagram of a side unfolded appearance image in an angle-height coordinate system provided by the present application;

[0048] Figure 9 A schematic diagram of the structure of a riveted joint quality inspection system provided in this application;

[0049] Figure 10 This is a schematic structural diagram of a riveted joint quality inspection device provided in this application. DETAILED DESCRIPTION

[0050] The core of the present invention is to provide a method, system and device for detecting the quality of riveted joints, which can automatically compare data without manual judgment, thereby performing quality detection on riveted joints and improving the efficiency of quality detection of riveted joints.

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 making creative efforts shall fall within the scope of protection of the present invention.

[0052] Please refer to Figure 1 , Figure 1 A flow chart of a riveted joint quality inspection method provided in this application, the method comprising:

[0053] S11: Acquire contour data and appearance image data of the riveted joint to be tested; the contour data includes the height of the riveted joint to be tested relative to the surface of the connected materials;

[0054] After the rivets are riveted, it is usually necessary to inspect the riveted joints to observe their appearance and height to determine the quality of the riveted joints, such as whether the rivet heads are in place and whether there are any cracks in appearance. In the existing technology, manual inspection is usually used, that is, manual inspection is performed using measuring tools or templates to measure and observe the riveted joints to be tested, and the inspection is performed based on the measured data and preset size requirements. Since the riveted joints are usually small in size and there are many of them, this will undoubtedly require a lot of manpower for measurement and inspection, resulting in a waste of manpower. Please refer to Figure 2 and Figure 3 , Figure 2This is a schematic diagram of a riveted joint provided in the prior art. Figure 3 This is a schematic diagram of a method for detecting riveted joint data in the prior art.

[0055] In order to solve the above technical problems, this application first obtains the contour data and appearance image data of the riveted joint to be tested; the contour data includes the height of the riveted joint to be tested relative to the surface of the connected material, so as to determine whether the height of the rivet to be tested meets the requirements and whether the appearance meets the requirements.

[0056] The quality inspection of the riveted joint to be tested involves the contour data of the riveted joint to be tested, which mainly includes the height of the riveted joint to be tested relative to the surface of the connected material, specifically including the forming size of the swaging head of the riveted joint to be tested and the forming size of the collar, as well as the height difference between the plane of the riveted joint to be tested and the plane of the workpiece, that is, the height difference between the riveted joint to be tested and the surface of the connected material and the height of the breaking end of the push rod; the appearance image data includes the surface quality status of the riveted joint to be tested, such as whether the rivet swaging head is missing, whether the paint layer on the workpiece surface is damaged, whether the breaking end is defective, etc.

[0057] As a preferred embodiment, the contour data of the riveted joint to be tested is obtained; the contour data is the height of the riveted joint to be tested relative to the surface of the connected material, including:

[0058] Establish a plane rectangular coordinate system with the center of the riveted joint to be tested as the origin, and use the preset direction as the positive direction of the x-axis. Determine the positive direction of the y-axis based on the positive direction of the x-axis.

[0059] The center of the cross laser is aligned with the origin of the plane rectangular coordinate system, and the two mutually perpendicular laser lines are aligned with the x-axis and y-axis of the plane rectangular coordinate system. The profile data is determined based on the total propagation distance of the reflected waves of the laser lines of the cross laser. The profile data is the first height of the riveted joint to be measured relative to the surface of the connected materials on the x-axis and the second height relative to the surface of the connected materials on the y-axis.

[0060] Among them, when obtaining the contour data of the riveted joint to be measured, since the upper surface of the riveted joint is usually circular when looking down from a top-down angle, the center of the circular upper surface of the riveted joint to be measured is first used as the origin to establish a plane rectangular coordinate system, and the x-axis direction and the y-axis direction are determined. Since the x-axis direction and the y-axis direction are perpendicular to each other, the center of the cross laser can be coincided with the origin of the plane rectangular coordinate system, and the two mutually perpendicular laser lines of the cross laser are coincident with the x-axis and the y-axis respectively. The cross laser emits laser light from the top of the riveted joint to be measured to the glue riveted joint to be measured. Light, laser will be reflected back when encountering non-air substances, that is, the laser will be reflected when encountering the riveted joint to be tested or the connected material. Therefore, the profile data on the x-axis and the profile data on the y-axis of the riveted joint to be tested can be determined by the total propagation distance of the reflected wave of the cross laser. Specifically, the first height of the riveted joint to be tested on the x-axis relative to the surface of the connected material is determined based on the total propagation distance of the reflected wave of the laser on the x-axis, and the second height on the y-axis relative to the surface of the connected material is determined based on the total propagation distance of the reflected wave of the laser on the x-axis. Please refer to Figure 4 , Figure 4 This is a schematic diagram of establishing a plane rectangular coordinate system provided in this application.

[0061] Of course, the directions of the x-axis and y-axis of the established plane rectangular coordinate system are not limited in this application.

[0062] As a preferred embodiment, the center of the cross laser is aligned with the origin of the plane rectangular coordinate system, and two mutually perpendicular laser lines are aligned with the x-axis and y-axis of the plane rectangular coordinate system respectively. The profile data is determined based on the total propagation distance of the reflected waves of the laser lines of the cross laser. The profile data includes a first height of the riveted joint to be measured relative to the surface of the connected materials on the x-axis and a second height relative to the surface of the connected materials on the y-axis, and further includes:

[0063] With the center of the riveted joint to be tested as the origin, establish an x-axis-height coordinate system and a y-axis-height coordinate system; the vertical axes of the x-axis-height coordinate system and the y-axis-height coordinate system are both the height of the riveted joint to be tested relative to the surface of the connected material;

[0064] The first height of the riveted joint to be tested relative to the surface of the connected materials on the x-axis is expressed and recorded in the x-axis-height coordinate system;

[0065] The second height of the riveted joint to be measured on the y-axis relative to the surface of the connected materials is represented and recorded in the y-axis-height coordinate system.

[0066] After determining the total propagation distance of the reflected waves of the cross laser on the x-axis and the y-axis, the first height of the riveted joint to be measured on the x-axis and the second height of the riveted joint to be measured on the y-axis can be determined according to the total propagation distance of the reflected waves. Therefore, a coordinate system can be established with the x-axis and y-axis as the horizontal axis and the height as the vertical axis, so that the height of the riveted joint to be measured on the x-axis and the y-axis relative to the surface of the connected material can be intuitively reflected through the x-axis-height coordinate system and the y-axis-height coordinate system. Please refer to Figure 5 , Figure 5 This application provides a schematic diagram of representing the height of a riveted joint to be measured using an x-axis-height coordinate system and a y-axis-height coordinate system. Specifically, in the x-axis-height coordinate system, the origin position is the corresponding position of the center of the cross laser on the substrate surface, the x-axis is on the substrate surface and parallel to the x-axis in the plane rectangular coordinate system, and the vertical axis is perpendicular to the substrate surface and upward. The first height corresponding to each coordinate point on the x-axis is determined based on the total propagation distance of the reflected wave of the cross laser at each coordinate point on the x-axis. For example, when x=0, the corresponding first height is the height value determined based on the total propagation distance of the reflected wave of the cross laser at the origin of the plane rectangular coordinate system.

[0067] In addition, when the contour data of the riveted joint to be measured is acquired by the cross laser, a top view image of the riveted joint to be measured can also be taken from above the riveted joint to be measured, such as Figure 6 As shown, Figure 6 This is a schematic diagram of a top view of a riveted joint to be tested provided in this application. Based on this, the position of the connected material, that is, the surface of the substrate, the position of the nail rod and the ring of the riveted joint to be tested can be determined, and the position of the riveted joint to be tested can be determined. Figure 4 Combined to determine Figure 5 The actual position of the riveted joint to be measured corresponds to each point in the image. This means determining the height of the shank and collar outlines in the image, as well as the height of the connected material (i.e., the plane outline). Since the total propagation distance of the wave reflected from the substrate surface is the longest, the substrate surface has the lowest height in the plane rectangular coordinate system.

[0068] Specifically, since the cross laser is emitted vertically downward from above the riveted joint to be tested, the cross laser will first encounter the upper surface of the riveted joint to be tested and be reflected, and then encounter the surface of the connected material and be reflected. Therefore, the total propagation distance of the reflected wave that encounters the upper surface of the riveted joint to be tested and is reflected is shorter than the total propagation distance of the reflected wave that encounters the surface of the connected material and is reflected. Moreover, because the contour of the riveted joint to be tested is not a uniform contour, based on this, the total propagation distance of the reflected wave of the cross laser will change with the contour change of the riveted joint to be tested. The closer the contour is to the emission position of the cross laser, the shorter the total propagation distance of the laser wave reflected back. That is, the total propagation distance of the reflected wave corresponding to the highest position on the riveted joint to be tested is the shortest, and the total propagation distance of the wave reflected from the substrate surface is the longest. Alternatively, the profile data can be determined based on the time it takes for the cross laser to reflect back. For example, since the highest position on the riveted joint to be tested is closest to the emission position of the cross laser, the cross laser will be reflected back first when it encounters the highest position on the riveted joint to be tested. The time between emission and reflection of the cross laser corresponding to the highest position on the riveted joint to be tested is the shortest. Since the substrate surface is the lowest position, the substrate surface is farthest from the emission position of the cross laser. The cross laser will be reflected back last when it encounters the substrate surface. The time between emission and reflection of the cross laser corresponding to the substrate surface is the longest. Of course, the above is described based on the two extreme data of the longest total propagation distance of the wave and the shortest total propagation distance of the wave. The total propagation distance of the reflected wave corresponding to different positions on the riveted joint to be tested and the time between emission and reflection of the cross laser are both negatively correlated with the height of different positions on the riveted joint to be tested. This embodiment will not be described in detail.For example, the height of the cross laser relative to the surface of the substrate is determined according to the total propagation distance of the reflected wave reflected by the cross laser from the surface of the substrate, and the height of the cross laser relative to the upper surface of the riveted joint to be measured is determined according to the total propagation distance of the reflected wave reflected by the cross laser from the upper surface of the riveted joint to be measured. The height of the upper surface of the riveted joint to be measured relative to the surface of the substrate is determined by subtracting the total propagation distance of the reflected wave reflected by the cross laser from the surface of the substrate from the total propagation distance of the reflected wave reflected by the cross laser from the upper surface of the riveted joint to be measured, and the first height is determined by subtracting the total propagation distance of the reflected wave reflected by the cross laser from the surface of the substrate from the total propagation distance of the reflected wave reflected by the cross laser from the upper surface of the riveted joint to be measured on the x-axis. The second height is determined by subtracting the total propagation distance of the reflected wave reflected by the cross laser from the upper surface of the riveted joint to be measured on the y-axis from the propagation distance of the cross laser. Alternatively, the time difference from the emission of the cross laser to the reflection from the substrate surface to the position where the cross laser is emitted is determined, the time difference is multiplied by the propagation speed of the laser in the air and then divided by 2, which is the distance between the position where the cross laser is emitted and the substrate surface. Based on this, the distance between the position where the cross laser is emitted and the upper surface of the riveted joint to be measured is calculated. Taking the height of the substrate surface as 0 as the reference, the difference between the distance between the position where the cross laser is emitted and the substrate surface minus the distance between the position where the cross laser is emitted and the upper surface of the riveted joint to be measured is the height of the upper surface of the riveted joint to be measured, and then the first height on the x-axis and the second height on the y-axis are distinguished.

[0069] It should be noted that the positions of all laser emission points of the cross laser are in the same plane parallel to the substrate surface. Specifically, optical elements such as collimating lenses or orthogonal cylindrical lens groups can be used to ensure that the laser beam remains parallel during propagation.

[0070] As a preferred embodiment, obtaining appearance image data of the riveted joint to be tested includes:

[0071] Acquire a side unfolded appearance image of the riveted joint to be tested;

[0072] An angle-height coordinate system is established with the preset position where the riveted joint to be tested is connected to the connected material in the side unfolded appearance image as the origin, the height relative to the surface of the connected material as the vertical axis, and the angle along the side of the riveted joint to be tested as the horizontal axis; the side unfolded appearance image of the riveted joint to be tested in the angle-height coordinate system is the appearance image data.

[0073] When determining the appearance image data, specifically, it is to shoot along the side of the riveted joint to be tested in a circle. For example, starting from the preset position, shoot the side unfolded appearance image of the riveted joint to be tested in a circle along the side of the riveted joint to be tested, and use the preset position as the origin and the angle along the side of the riveted joint to be tested as the horizontal axis to establish an angle-height coordinate system, and intuitively represent the photographed side unfolded appearance image in the angle-height coordinate system. It should be noted that the riveted joint to be tested can be compared to a cylinder, and the side unfolded appearance image is the unfolded side unfolded view of the cylinder. Please refer to Figure 4 , Figure 4 The positive direction of the x-axis is 0 degrees, and the angles along the side of the riveted joint to be tested are marked in a clockwise direction. Figure 7 , Figure 7 This is a schematic diagram of establishing an angle-height coordinate system provided by this application, wherein the horizontal axis is the angle, that is, the angle along the side of the riveted joint to be tested, and the vertical axis is the height. Please refer to Figure 8 , Figure 8 This application provides a schematic diagram of a side unfolded appearance image in an angle-height coordinate system, but only the images at 90°, 180°, 270° and 360° positions are selected as examples.

[0074] S12: comparing the contour data with a preset contour data qualified range, and comparing the appearance image data with a preset appearance image data qualified range;

[0075] In this embodiment, after obtaining the contour data and appearance image data, there is no need to manually compare them with the size requirements. Instead, the processor compares the contour data with the preset contour data qualified range, and compares the appearance image data with the preset appearance image data qualified range, so as to determine whether the rivet joint to be tested meets the preset requirements.

[0076] S13: If the contour data is within the preset contour data qualified range, and the appearance image data is within the preset appearance image data qualified range, the riveted joint to be tested is determined to be a qualified riveted joint.

[0077] If the contour data is within the preset contour data qualified range, then the contour data of the riveted joint to be tested can be determined to be qualified. If the appearance image data is within the preset appearance image data qualified range, then the appearance image data of the riveted joint to be tested can be determined to be qualified. However, only when the contour data is qualified and the appearance image data is qualified can the riveted joint to be tested be determined to be a qualified riveted joint. If any one of the contour data and the appearance image data is unqualified, then the riveted joint to be tested is an unqualified riveted joint.

[0078] In summary, in this application, there is no need for manual judgment, and data can be automatically compared to perform quality inspection on riveted joints, thereby improving the efficiency of quality inspection of riveted joints.

[0079] Based on the above embodiment:

[0080] As a preferred embodiment, the present invention further comprises:

[0081] Acquire a preset qualified contour database and a preset qualified appearance image database, wherein the preset qualified contour database includes predetermined contour data of each qualified riveted joint, and the preset qualified appearance image database includes predetermined appearance image data of each qualified riveted joint;

[0082] Determining a preset contour data qualified range based on contour data of each qualified riveted joint in a preset qualified contour database;

[0083] The preset qualified range of appearance image data is determined based on the appearance image data of each qualified riveted joint in the preset qualified appearance image database.

[0084] The preset contour data qualified range in this embodiment is specifically determined based on a preset preset qualified appearance image database, which includes the contour data of each predetermined qualified riveted joint. The preset contour data qualified range can be determined based on the contour data of each predetermined qualified riveted joint, and the contour data is compared with the preset contour data qualified range to determine whether the contour data is qualified.

[0085] Accordingly, the preset appearance image data qualified range is specifically determined based on a preset preset qualified appearance image database, which includes the appearance image data of each predetermined qualified riveted joint. The preset appearance image data qualified range can be determined based on the appearance image data of each predetermined qualified riveted joint, and the appearance image data is compared with the preset appearance image data qualified range to determine whether the appearance image data is qualified.

[0086] It should be noted that the preset qualified contour database may include the qualified forming dimensions of the ram, the forming dimensions of the ring, the height difference between the plane of the riveted joint to be tested and the plane of the workpiece, and the height dimension of the port. By comparing each data in the contour data of the riveted joint to be tested with the corresponding qualified data, it can be determined whether each data in the contour data is qualified.

[0087] As a preferred embodiment, after comparing the contour data with a preset contour data qualified range and comparing the appearance image data with a preset appearance image data qualified range, the method further includes:

[0088] If the profile data is within the preset profile data qualified range, the profile data of the riveted joint to be tested is added to the preset qualified profile database;

[0089] If the appearance image data is within the preset qualified range of appearance image data, the appearance image data of the riveted joint to be tested is added to the preset qualified appearance image database.

[0090] In this embodiment, if the contour data is qualified, the qualified contour data can be added to the preset qualified contour database for supplementation to improve the accuracy of subsequent judgments; if the appearance image data is qualified, the qualified appearance image data can be added to the preset qualified appearance image database for supplementation to improve the accuracy of subsequent judgments.

[0091] As a preferred embodiment, after obtaining the contour data and appearance image data of the riveted joint to be tested, wherein the contour data is the height of the riveted joint to be tested relative to the surface of the connected material, the method further includes:

[0092] If the contour data is not within the preset contour data qualified range, the contour data of the riveted joint to be tested is determined to be unqualified contour data;

[0093] If the appearance image data is not within the preset appearance image data qualified range, the appearance image data of the riveted joint to be tested is determined to be unqualified appearance image data.

[0094] In addition, if it is determined that the contour data is not within the preset contour data qualified range, the contour data of the riveted joint to be tested will also be regarded as unqualified contour data; if it is determined that the appearance image data is not within the preset appearance image data qualified range, the appearance image data of the riveted joint to be tested will also be regarded as unqualified appearance image data, so as to distinguish qualified contour data from unqualified contour data, and qualified appearance image data from unqualified appearance image data.

[0095] As a preferred embodiment, after determining that the appearance image data of the riveted joint to be tested is unqualified appearance image data, the method further includes:

[0096] storing the unqualified profile data in an unqualified profile database;

[0097] The unqualified appearance image data is stored in an unqualified appearance image database.

[0098] In addition, unqualified contour data is stored in an unqualified contour database, and unqualified appearance image data is stored in an unqualified appearance image database, so that it is possible to check which data belongs to unqualified contour data and unqualified appearance image data later.

[0099] In summary, in this application, the contour data and appearance image data of the riveted joint to be tested are stored and added to the corresponding database, which can not only improve the accuracy of automatic riveted joint quality detection, but also facilitate subsequent manual review, such as riveting rivets according to the preset qualified contour database and the preset qualified appearance image database, thereby improving the quality of the riveted joint, and avoiding problems through the unqualified appearance image database and the unqualified contour database, or making corresponding improvements, which can also improve the quality of subsequent riveted joints.

[0100] Please refer to Figure 9 , Figure 9 This is a schematic diagram of the structure of a riveted joint quality inspection system provided in this application, which includes:

[0101] The data acquisition unit 91 is used to acquire the contour data and appearance image data of the riveted joint to be tested; the contour data is the height of the riveted joint to be tested relative to the surface of the connected material;

[0102] a data comparison unit 92 for comparing the contour data with a preset contour data qualified range, and comparing the appearance image data with a preset appearance image data qualified range;

[0103] The joint quality determination unit 93 is configured to determine that the riveted joint to be tested is a qualified riveted joint when the contour data is within a preset contour data qualified range and the appearance image data is within a preset appearance image data qualified range.

[0104] For an introduction to the riveted joint quality inspection system provided by the present invention, please refer to the above method embodiment, and the present invention will not be described in detail here.

[0105] Please refer to Figure 10 , Figure 10 This is a schematic diagram of the structure of a riveted joint quality inspection device provided in this application, which includes:

[0106] Memory 101, used for storing computer programs;

[0107] The processor 102 is configured to implement the steps of the above-mentioned riveted joint quality detection method when executing the computer program.

[0108] For an introduction to the riveted joint quality detection device provided by the present invention, please refer to the above method embodiment, and the present invention will not be repeated here.

[0109] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0110] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for detecting the quality of riveted joints, characterized in that: include: Acquiring contour data and appearance image data of the riveted joint to be tested; the contour data includes the height of the riveted joint to be tested relative to the surface of the connected materials; Comparing the outline data with a preset outline data qualified range, and comparing the appearance image data with a preset appearance image data qualified range; If the contour data is within a preset contour data qualified range, and the appearance image data is within a preset appearance image data qualified range, then the riveted joint to be tested is determined to be a qualified riveted joint.

2. The riveted joint quality inspection method according to claim 1, characterized in that: Obtain the contour data of the riveted joint to be tested, including: Establishing a plane rectangular coordinate system with the center of the riveted joint to be tested as the origin, and using a preset direction as the positive direction of the x-axis, determining the positive direction of the y-axis based on the positive direction of the x-axis; The center of the cross laser is aligned with the origin of the plane rectangular coordinate system, and two mutually perpendicular laser lines are aligned with the x-axis and y-axis of the plane rectangular coordinate system respectively, so as to determine the profile data based on the total propagation distance of the reflected waves of the laser lines of the cross laser. The profile data includes a first height of the riveted joint to be measured relative to the surface of the connected materials on the x-axis and a second height relative to the surface of the connected materials on the y-axis.

3. The riveted joint quality inspection method according to claim 2, characterized in that: The center of the cross laser is aligned with the origin of the plane rectangular coordinate system, and two mutually perpendicular laser lines are aligned with the x-axis and y-axis of the plane rectangular coordinate system, so as to determine the profile data based on the total propagation distance of the reflected waves of the laser lines of the cross laser, wherein the profile data includes a first height of the riveted joint to be measured relative to the surface of the connected materials on the x-axis and a second height relative to the surface of the connected materials on the y-axis, and further includes: With the center of the riveted joint to be tested as the origin, establish an x-axis-height coordinate system and a y-axis-height coordinate system; the longitudinal axes of the x-axis-height coordinate system and the y-axis-height coordinate system are both the height of the riveted joint to be tested relative to the surface of the connected material; Representing and recording a first height of the riveted joint to be tested on the x-axis relative to the surface of the connected materials in the x-axis-height coordinate system; The second height of the riveted joint to be measured on the y-axis relative to the surface of the connected materials is represented and recorded in the y-axis-height coordinate system.

4. The riveted joint quality inspection method according to claim 1, characterized in that: Obtain appearance image data of the riveted joint to be tested, including: Acquire a photographed side unfolded appearance image of the riveted joint to be tested; An angle-height coordinate system is established with a preset position where the riveted joint to be tested is connected to the connected material in the side unfolded appearance image as the origin, the height relative to the surface of the connected material as the vertical axis, and the angle along the side of the riveted joint to be tested as the horizontal axis; the side unfolded appearance image of the riveted joint to be tested in the angle-height coordinate system is the appearance image data.

5. The riveted joint quality inspection method according to claim 1, characterized in that: Also includes: Acquiring a preset qualified contour database and a preset qualified appearance image database, wherein the preset qualified contour database includes predetermined contour data of each qualified riveted joint, and the preset qualified appearance image database includes predetermined appearance image data of each qualified riveted joint; Determining the preset contour data qualified range based on the contour data of each qualified riveted joint in the preset qualified contour database; The preset qualified range of appearance image data is determined based on the appearance image data of each qualified riveted joint in the preset qualified appearance image database.

6. The riveted joint quality inspection method according to claim 5, characterized in that: After comparing the outline data with a preset outline data qualified range and comparing the appearance image data with a preset appearance image data qualified range, the method further includes: If the profile data is within the preset profile data qualified range, the profile data of the riveted joint to be tested is added to the preset qualified profile database; If the appearance image data is within a preset qualified range of appearance image data, the appearance image data of the riveted joint to be tested is added to the preset qualified appearance image database.

7. The riveted joint quality inspection method according to any one of claims 1 to 6, characterized in that: After obtaining the contour data and appearance image data of the riveted joint to be tested, the following steps are also included: If the contour data is not within the preset contour data qualified range, determining that the contour data of the riveted joint to be tested is unqualified contour data; If the appearance image data is not within the preset appearance image data qualified range, the appearance image data of the riveted joint to be tested is determined to be unqualified appearance image data.

8. The riveted joint quality inspection method according to claim 7, characterized in that: After determining that the appearance image data of the riveted joint to be tested is unqualified appearance image data, the method further includes: storing the unqualified profile data in an unqualified profile database; The unqualified appearance image data is stored in an unqualified appearance image database.

9. A riveted joint quality inspection system, characterized in that: include: a data acquisition unit, configured to acquire contour data and appearance image data of the riveted joint to be tested; the contour data including the height of the riveted joint to be tested relative to the surface of the connected material; a data comparison unit, configured to compare the contour data with a preset contour data qualified range, and to compare the appearance image data with a preset appearance image data qualified range; The joint quality determination unit is used to determine that the riveted joint to be tested is a qualified riveted joint when the contour data is within a preset contour data qualified range and the appearance image data is within a preset appearance image data qualified range.

10. A riveted joint quality inspection device, characterized in that: include: Memory for storing computer programs; A processor is configured to implement the steps of the riveted joint quality detection method according to any one of claims 1 to 8 when executing a computer program.

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