CN118347943B - Vehicle body paint surface detection system and method - Google Patents
Vehicle body paint surface detection system and method Download PDFInfo
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- CN118347943B CN118347943B CN202410773645.2A CN202410773645A CN118347943B CN 118347943 B CN118347943 B CN 118347943B CN 202410773645 A CN202410773645 A CN 202410773645A CN 118347943 B CN118347943 B CN 118347943B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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Abstract
The invention relates to the technical field of vehicle detection, and discloses a vehicle body paint surface detection system and method along with a vehicle body paint surface. The vehicle body paint detection system comprises a bearing frame, a rack, a first detection module, a second detection module and a third detection module, wherein the first detection module comprises a first sliding seat, a first rotary beam, a first shooting module and a first light source, the first rotary beam is rotationally arranged on the first sliding seat, and the first shooting module and the first light source are both arranged on the first rotary beam; the second detection module comprises a second sliding seat, a second rotary beam, a second shooting module and a second light source, wherein the second rotary beam is rotatably arranged on the second sliding seat, and the second shooting module and the second light source are both arranged on the second rotary beam; the third detection module comprises a third sliding seat, a third shooting module and a third light source, and the third shooting module and the third light source are arranged on the third sliding seat. The invention has high detection efficiency, small detection error and accurate detection result, and can carry out omnibearing detection on the vehicle body.
Description
Technical Field
The invention relates to the technical field of vehicle detection, in particular to a vehicle body paint surface detection system and method along with a vehicle body paint surface.
Background
Automobiles are widely used in daily life of people, and become the first choice traffic tool for people to travel. In the production process of an automobile, the quality of paint spraying intuitively reflects the quality of the appearance of the automobile, but impurity points are inevitably present in the paint spraying process, so that appearance defects such as concave-convex points exist on the painted surface after paint spraying, in addition, in the assembly process of painted parts, the friction of the painted surface is inevitably caused, so that appearance defects such as partial scratches and paint dropping exist in the assembled automobile, and the detection of the whole automobile painted surface is very necessary before the automobile leaves the factory.
The traditional automobile paint surface mostly adopts a manual visual detection method, the automobile is placed in a detection area irradiated by a strong light source, under the condition that the automobile body is stopped, the defect is identified by naked eyes, the minimum defect size which can be distinguished under the normal visual distance of human eyes is about 0.1mm, and the detection rate according to the statistical defect is between 70% and 80%. However, long-time work under the lamp strip is prone to fatigue and damage to vision, and cannot accurately provide defect types and data; meanwhile, the manual detection has the problem of low speed due to the influence of the size and the height of the vehicle body, and the vehicle body cannot be detected in all directions.
Disclosure of Invention
Based on the problems, the invention aims to provide a vehicle body paint surface detection system and method along with the type, which have the advantages of high detection efficiency, small detection error and accurate detection result, and can carry out omnibearing detection on a vehicle body.
In order to achieve the above object, the following technical scheme is provided:
In a first aspect, the present invention provides a vehicle body paint detection system of the type comprising:
the bearing frame is used for bearing a vehicle body structure, and the vehicle body structure advances at a set speed in the detection process;
the rack is used for bearing the detection module;
the detection module is provided with three groups, and the surface of the vehicle body structure is subjected to equal-angle and equidistant drawing;
The first detection module comprises a first sliding seat, a first rotating beam, a first shooting module and a first light source, wherein the first sliding seat is movably arranged on the frame, the first rotating beam is rotatably arranged on the first sliding seat, the first sliding seat can drive the first rotating beam to move up and down, the first rotating beam is of a split type structural design, and the first shooting module and the first light source are both arranged on the first rotating beam; the first detection module is used for shooting images of the upper surface, the front surface and the rear surface of the vehicle body structure;
The second detection module comprises a second sliding seat, a second rotary beam, a second shooting module and a second light source, wherein the second sliding seat is movably arranged on the frame, the second rotary beam is rotatably arranged on the second sliding seat, the second shooting module and the second light source are both arranged on the second rotary beam, and the second sliding seat is of a split type structural design; the second detection module is used for shooting transition surface images of the vehicle body structure between the upper surface, the front surface, the rear surface and the left and right side surfaces;
The third detection module comprises a third sliding seat, a third shooting module and a third light source, wherein the third sliding seat is movably arranged on the rack, and the third shooting module and the third light source are both arranged on the third sliding seat; the third detection module is used for shooting images of the left side surface and the right side surface of the vehicle body structure.
As an alternative scheme of the vehicle body paint surface detection system with the type, the frame comprises a supporting box and supporting columns, the supporting columns are arranged on the supporting box, and the first sliding seat is movably arranged on the supporting columns.
As an alternative scheme of the vehicle body paint surface detection system with the type, the support column is provided with the driving rack, the first sliding seat is provided with the driving motor and the driving gear, the driving motor is used for driving the driving gear to rotate, and the driving gear is meshed with the driving rack.
As an alternative scheme of the vehicle body paint surface detection system with the following type, the first cylinder and the first sliding rail are arranged on the supporting box, the second sliding seat is in sliding fit with the first sliding rail, and the first cylinder is used for driving the second sliding seat to move.
As an alternative scheme of the vehicle body paint surface detection system with the following type, the second cylinder and the second sliding rail are arranged on the supporting box, the third sliding seat is in sliding fit with the second sliding rail, and the second cylinder is used for driving the third sliding seat to move.
As an alternative scheme of the vehicle body paint surface detection system with the type, the first sliding seat is provided with the first motor and the first supporting seat, the first rotary beam is rotatably arranged on the first supporting seat, and the first motor is used for driving the first rotary beam to rotate.
As an alternative scheme of the vehicle body paint surface detection system with the type, the second sliding seat comprises an upright post and an inclined post arranged on the upright post, and the second rotary beam is rotatably arranged on the inclined post.
As an alternative scheme of the vehicle body paint surface detection system with the type, the inclined column is provided with the second motor and the second supporting seat, the second rotary beam is rotatably arranged on the second supporting seat, and the second motor is used for driving the second rotary beam to rotate.
As an alternative scheme of the vehicle body paint surface detection system with the type, the first rotating beams with the split type structural design are positioned at the same height and have an included angle of 180 degrees in the working process; the second sliding seat of the split type structural design has an included angle smaller than 180 degrees in the working process.
In a second aspect, the present invention also provides a paint surface detection method for a vehicle body with pattern, which uses the paint surface detection system for a vehicle body with pattern to detect paint surfaces of a vehicle body structure, and the paint surface detection method for a vehicle body with pattern comprises the following steps:
The carrier carries the vehicle body structure;
adjusting the moving position of the first sliding seat on the frame and the rotating angle of the first rotating beam, so that the first light source irradiates on a first preset position of the vehicle body structure, and shooting a paint image of the first preset position of the vehicle body structure through the first shooting module;
Adjusting the moving position of the second sliding seat on the frame and the rotating angle of the second rotating beam, so that the second light source irradiates on a second preset position of the vehicle body structure, and shooting a paint image of the second preset position of the vehicle body structure through the second shooting module;
and adjusting the moving position of the third sliding seat on the frame, so that the third light source irradiates on a third preset position of the vehicle body structure, and shooting a paint image of the third preset position of the vehicle body structure through a third shooting module.
The beneficial effects of the invention are as follows:
According to the vehicle body paint surface detection system and method with the pattern, the bearing frame bears the vehicle body structure, the moving position of the first sliding seat on the frame and the rotating angle of the first rotating beam are adjusted, so that the first light source irradiates on the first preset position of the vehicle body structure, paint surface images of the first preset position of the vehicle body structure are shot through the first shooting module, the first preset position can be the upper surface and the front and rear surfaces of the vehicle body structure, the moving position of the second sliding seat on the frame and the rotating angle of the second rotating beam are adjusted, so that the second light source irradiates on the second preset position of the vehicle body structure, the second preset position can be the arc transition surface of the vehicle body structure, the moving position of the third sliding seat on the frame is adjusted, the third light source irradiates on the third preset position of the vehicle body structure, the paint surface images of the third preset position of the vehicle body structure are shot through the third shooting module, the third preset position can be the side surfaces of the vehicle body structure, the focal length of the second sliding seat on the frame and the second sliding seat is always kept in the same with the focal length of the vehicle body structure, the distance is always consistent with the surface of the vehicle body structure, the detection result is not required to be detected, the visual field is high, the automatic detection is not required, the automatic detection is accurate, the visual field is detected, the detection is not consistent, the visual field is high, the detection is accurate, the visual field is detected is accurate, and the position is detected in the position is in the visual field is high, and the visual field is used in the visual field is in the visual and the visual field, and the visual.
Compared with the scheme that the mechanical arm carries a camera light source, the invention has the advantages of low comprehensive cost, small occupied area, dynamic detection along with the line and high detection speed. Compared with a tunnel scheme, the invention has the advantages of high detection precision, large effective detection area and detectable vertical plane. According to the invention, the vehicle body moves forwards along with the production line body at a set speed, three groups of detection modules respectively follow the shape adjustment position and angle of the vehicle body from three directions, and continuously take pictures and take pictures, so that a complete image of the vehicle body is finally obtained. The invention not only can achieve the short-distance full-coverage drawing of the mechanical arm scheme, but also can have the high beat capacity of the tunnel scheme, and can adjust the detection module according to the three-dimensional modeling of the model of the vehicle to be detected so as to adapt to the change of the vehicle type.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic illustration of a vehicle body paint detection system and a vehicle body structure according to one embodiment of the present invention;
FIG. 2 is a schematic structural view of a vehicle body paint detection system and vehicle body structure according to an embodiment of the present invention, wherein the vehicle body paint detection system conceals a protective cover and an operating module;
FIG. 3 is a schematic view of a vehicle body paint detection system according to an embodiment of the present invention in a view angle, wherein the vehicle body paint detection system according to the embodiment conceals a protective cover and an operating module;
Fig. 4 is a schematic structural view of a vehicle body paint detection system according to an embodiment of the present invention at another view angle, in which the protective cover and the operation module are hidden by the vehicle body paint detection system according to the embodiment of the present invention.
In the figure:
1. A carrier; 2. a frame; 3. a first detection module; 4. a second detection module; 5. a third detection module; 6. a ground rail; 7. a protective cover; 8. an operation module;
21. A supporting box; 22. a support column; 23. a drive rack; 24. a first cylinder; 25. a first slide rail; 26. a second cylinder; 27. a second slide rail;
31. A first slider; 32. a first rotating beam; 33. a first shooting module; 34. a first light source; 35. a driving motor; 36. a first motor; 37. a first support base;
41. a second slider; 42. a second rotating beam; 43. a second shooting module; 44. a second light source;
411. a column; 412. a diagonal column; 413. a second motor; 414. a second support base;
51. A third slider; 52. a third shooting module; 53. a third light source;
100. A vehicle body structure.
Detailed Description
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the prior art, a mode of carrying a camera light source by a mechanical arm (requiring a vehicle body to be in a static state and not suitable for online operation of a production line) and a tunnel type (large occupied area and not suitable for various vehicle types and poor detection effect on tiny defects) are adopted for detecting the quality of the vehicle body paint surface, but the two schemes have respective defects and cannot be suitable for the on-site reconstruction of all production lines, so that the on-site condition and the defects in the prior art are combined, and a brand new vehicle body paint surface detection system with different types is developed.
On the basis of considering the defects of two detection schemes in the prior art, the external form structure of the vehicle body is analyzed, the conventional integrated detection form is abandoned, and three detection module forms are designed in a targeted manner aiming at three structures of the external form of the vehicle body.
As shown in fig. 1 to 4, the present embodiment provides a vehicle-body paint detection system according to the type, which includes a carrier 1, a frame 2, a first detection module 3, a second detection module 4, and a third detection module 5, where the carrier 1 is used to carry a vehicle body structure 100, the vehicle body structure 100 advances at a set speed in a detection process, the frame 2 is used to carry the detection modules, the detection modules are provided with three groups, and the surfaces of the vehicle body structure 100 are subjected to equal-angle and equidistant drawing, and it is understood that the detection modules can be continuously and dynamically adjusted according to the motion state of the vehicle body structure 100, so as to improve the efficiency of the pipeline operation, and the detection modules can also select several typical position forms of the vehicle body structure 100 to perform adaptive adjustment without time adjustment.
The detection module is composed of a first station car top surface, two sides of a second station car body, three groups of movable rotating structures of a third station car side radian surface, a plurality of strip-shaped light sources and a plurality of cameras. The structure of the movable and rotary load camera and the light source enables the movable and rotary load camera to be more attached to the surface of the car body structure 100, an anti-collision structure can be designed, in the detection process, along with the movement of the car body, firstly the first station is used for lifting and detecting the top surface of the car head, secondly the first station is used for detecting the top surface of the car body, secondly the second station is used for detecting the two sides of the car body, thirdly the third station is used for detecting the curved surfaces of the two sides of the car body, the bottoms of the second station and the third station can be moved back and forth to be close to the car body, finally the first station is used for lifting and rotating to detect the vertical surface of the car tail, the second station is used for rotating to detect the vertical curved surfaces of the car tail, and the camera and the light source are attached to the car in a three-dimensional curve rotating manner along with the forward movement of the car body, and according to the forward speed of the car body, the shooting distance and the angle of the camera and the paint surface can be controlled to be kept constant all the time. On the premise of meeting the high beat, the method has great optimization on the graph-taking effect and algorithm detection. The scheme absorbs the advantages of the original two schemes, does not generate the risk of principle verification, and can be folded to the maximum extent when the operation is stopped, so that the production is not influenced. The scheme optimizes the occupied area and occupied space, and has good adaptability to the installation site. On the basis of not reducing the equipment identification capability, the cost is reduced from three aspects of manufacturing production, transportation and implementation, the time period for adding a new vehicle model is very short, no additional materials are added, and only the debugging cost is required.
Specifically, the first detection module 3 includes a first slide seat 31, a first rotating beam 32, a first shooting module 33 and a first light source 34, the first slide seat 31 is movably arranged on the frame 2, the first rotating beam 32 is rotatably arranged on the first slide seat 31, the first slide seat 31 can drive the first rotating beam 32 to move up and down, the first rotating beam 32 is of a split type structural design, and the first rotating beam 32 of the split type structural design is positioned at the same position in the working process, and the included angle between the first rotating beam 32 and the first rotating beam is 180 degrees; the first shooting module 33 and the first light source 34 are both arranged on the first rotating beam 32, a detachable disconnection structure (not shown in the figure) can be adopted for the split structural design of the first rotating beam 32, a production line is not affected by opening, and the sliding of the first sliding seat 31 and the rotation of the first rotating beam 32 enable the first shooting module 33 and the first light source 34 to be more attached to the surface curved surface of the vehicle body structure 100, so that shooting definition is ensured; the first detection module 3 is used for shooting images of the upper surface, the front surface and the rear surface of the vehicle body structure 100; the second detection module 4 comprises a second sliding seat 41, a second rotary beam 42, a second shooting module 43 and a second light source 44, wherein the second sliding seat 41 is movably arranged on the frame 2, the second rotary beam 42 is rotatably arranged on the second sliding seat 41, the second shooting module 43 and the second light source 44 are both arranged on the second rotary beam 42, the second sliding seat 41 is of a split type structure design, and the included angle between the second sliding seat 41 of the split type structure design and each other is smaller than 180 degrees in the working process; the second detection module 4 is used for shooting transition surface images of the vehicle body structure 100 between the upper surface and the front and rear surfaces and between the left and right side surfaces; the third detection module 5 comprises a third sliding seat 51, a third shooting module 52 and a third light source 53, wherein the third sliding seat 51 is movably arranged on the frame 2, and the third shooting module 52 and the third light source 53 are both arranged on the third sliding seat 51; the third detection module 5 is used for photographing left and right side surface images of the vehicle body structure 100.
The carriage 1 carries the vehicle body structure 100, adjusts the moving position of the first slider 31 on the frame 2 and the rotation angle of the first rotating beam 32 so that the first light source 34 irradiates at a first preset position of the vehicle body structure 100, which may be the upper surface and the front-rear surface of the vehicle body structure 100, and photographs paint images of the first preset position of the vehicle body structure 100 through the first photographing module 33, adjusts the moving position of the second slider 41 on the frame 2 and the rotation angle of the second rotating beam 42 so that the second light source 44 irradiates at a second preset position of the vehicle body structure 100, which may be the arc transition surface of the vehicle body structure 100, the moving position of the third sliding seat 51 on the frame 2 is adjusted, so that the third light source 53 irradiates on a third preset position of the vehicle body structure 100, a paint image of the third preset position of the vehicle body structure 100 is shot through the third shooting module 52, the third preset position can be a side surface of the vehicle body structure 100, the focal length of a lens of the shooting module is always kept perpendicular to the surface of the vehicle body and consistent in distance in the shooting process, the projection of the light source is always kept in the view field of the shooting module, further, paint images of the vehicle body structure 100 at different positions are obtained.
Compared with the scheme that the mechanical arm carries a camera light source, the invention has the advantages of low comprehensive cost, small occupied area, dynamic detection along with the line and high detection speed. Compared with a tunnel scheme, the invention has the advantages of high detection precision, large effective detection area and detectable vertical plane. According to the invention, the vehicle body moves forwards along with the production line body at a set speed, three groups of detection modules respectively follow the shape adjustment position and angle of the vehicle body from three directions, and continuously take pictures and take pictures, so that a complete image of the vehicle body is finally obtained. The invention not only can achieve the short-distance full-coverage drawing of the mechanical arm scheme, but also can have the high beat capacity of the tunnel scheme, and can adjust the detection module according to the three-dimensional modeling of the model of the vehicle to be detected so as to adapt to the change of the vehicle type.
Alternatively, the frame 2 includes a support box 21 and a support column 22, the support column 22 is disposed on the support box 21, and the first slider 31 is movably disposed on the support column 22. The support columns 22 may be provided in two, two support columns 22 being located on both sides of the vehicle body structure 100, and the support boxes 21 being provided in two accordingly. The supporting case 21 may be a hollow structure for routing wires and the like.
In some embodiments, the support column 22 is provided with a driving rack 23, the first sliding seat 31 is provided with a driving motor 35 and a driving gear, and the driving motor 35 is used for driving the driving gear to rotate, and the driving gear is meshed with the driving rack 23. The first slide seat 31 is driven to move up and down in a rack-and-pinion mode, so that the driving force is large and the movement is stable.
In order to ensure stable movement of the second slide 41, optionally, the supporting box 21 is provided with a first cylinder 24 and a first slide rail 25, the second slide 41 is slidably matched with the first slide rail 25, and the first cylinder 24 is used for driving the second slide 41 to move back and forth.
In order to ensure stable movement of the third slide seat 51, optionally, the supporting box 21 is provided with a second cylinder 26 and a second slide rail 27, the third slide seat 51 is slidably matched with the second slide rail 27, and the second cylinder 26 is used for driving the third slide seat 51 to move back and forth. The two third sliding seats 51 respectively slide on the two second sliding rails 27, and the distance between the two third sliding seats 51 can be adjusted, so that the vehicle body structure 100 with different widths is used, the application range is wide, and the application scene is rich.
Optionally, the first slide 31 is provided with a first motor 36 and a first supporting seat 37, the first rotating beam 32 is rotatably disposed on the first supporting seat 37, and the first motor 36 is used for driving the first rotating beam 32 to rotate. The first supporting seats 37 may be provided in two at intervals, and the first rotating beam 32 is installed on the two first supporting seats 37 to ensure stable rotation of the first rotating beam 32.
In some embodiments, the second slider 41 includes a pillar 411 and a diagonal pillar 412 disposed on the pillar 411, and the second rotating beam 42 is rotatably disposed on the diagonal pillar 412. The inclined column 412 can be inclined at an angle of 45 degrees with the upright 411, so that the second shooting module 43 can conveniently shoot the position which cannot be shot by the first shooting module 33 and the third shooting module 52. The inclined column 412 can be slidably disposed on the upright 411, and the second photographing module 43 and the second light source 44 are more attached to the surface curved surface of the vehicle body structure 100 due to the sliding of the inclined column 412 and the rotation of the second rotating beam 42, so that the photographing definition is ensured.
Optionally, a second motor 413 and a second supporting seat 414 are disposed on the diagonal column 412, the second rotary beam 42 is rotatably disposed on the second supporting seat 414, and the second motor 413 is used for driving the second rotary beam 42 to rotate, so as to drive the second shooting module 43 and the second light source 44 to rotate synchronously, so as to adapt to the change of the line of the vehicle body, and realize that the second shooting module 43 and the second light source 44 are perpendicular to the surface of the vehicle body and have consistent distance. The two second supporting seats 414 may be arranged at intervals, and the second rotating beam 42 is erected on the two second supporting seats 414, so as to ensure that the second rotating beam 42 is stably rotated.
It should be noted that, in the present application, the second detection module 4 is designed, and the second support seat 414 in the second detection module 4 is designed as a split structure, that is, two second photographing modules 43 are symmetrically designed, which are also located on the second support seat 414, and this design is specially aimed at the transition arc part of the upper plane and the side surface of the vehicle body to take the graph.
The three groups of detection modules realize equiangular and equidistant image shooting of the surface of the vehicle body through mechanical design, so that the image deformation caused by the angular problem is reduced, and the fine defects of the paint surface, such as scratches, dirt, shrinkage cavities and the like, can be more accurately captured. Meanwhile, the shooting module and the light source module are designed into a whole, namely, the shooting module and the light source module are synchronously moved under the driving of rotation or movement, so that the light can be ensured to be uniformly irradiated on the detected paint surface, the influence of shadows and light reflection is reduced, the quality of an image is improved, and the subsequent image processing and feature extraction are more accurate.
In some embodiments, the on-demand vehicle body paint detection system further comprises a ground rail 6, and the carrier 1 is movably arranged on the ground rail 6. The ground rail 6 can be provided with the gyro wheel, through motor drive gyro wheel rotation, drives and bears frame 1 and remove on ground rail 6, and then adjusts the position of the relative first detection module 3 of body structure 100, second detection module 4 and third detection module 5 to make things convenient for first detection module 3, second detection module 4 and third detection module 5 to shoot the paint surface image of the different positions department of car body structure 100. The detection module adopting the mechanical arm movement mode combines the movement of the mechanical arm with the static of the tunnel type ground rail 6, breaks off the middle of the traditional gantry form, splits the traditional gantry form into three groups of detection modules at two sides, namely a first detection module 3, a second detection module 4 and a third detection module 5, and each group can move and rotate along a single direction. When the vehicle body structure 100 moves, the first detection module 3, the second detection module 4 and the third detection module 5 respectively perform single-dimensional drawing (6 faces), and a complete three-dimensional graph is formed by software.
In addition, along with type automobile body paint surface detecting system can also include protection casing 7 and operation module 8, and protection casing 7 cover is established outside frame 2, prevents that external light source from influencing the shooting result of first detection module 3, second detection module 4 and third detection module 5, and operation module 8 supplies operating personnel to operate, and operation module 8 includes structures such as screen and button.
The present embodiment also provides a paint detection method for a vehicle body with pattern, which uses the paint detection system for a vehicle body with pattern to detect paint of a vehicle body structure 100, and the paint detection method for a vehicle body with pattern comprises the following steps:
the carrier 1 carries a vehicle body structure 100;
Adjusting the moving position of the first slider 31 on the frame 2 and the rotation angle of the first rotating beam 32 so that the first light source 34 irradiates on a first preset position of the vehicle body structure 100 and shoots a paint image of the first preset position of the vehicle body structure 100 through the first shooting module 33; the first preset position may be an upper surface and front and rear surfaces of the vehicle body structure 100;
Adjusting the moving position of the second slide carriage 41 on the frame 2 and the rotation angle of the second rotating beam 42 so that the second light source 44 irradiates on a second preset position of the vehicle body structure 100, and shooting a paint image of the second preset position of the vehicle body structure 100 through the second shooting module 43; the second preset position may be a circular arc transition surface of the vehicle body structure 100;
adjusting the moving position of the third slider 51 on the frame 2 so that the third light source 53 irradiates a third preset position of the vehicle body structure 100, and capturing a paint image of the third preset position of the vehicle body structure 100 through the third capturing module 52; the third preset position may be a side surface of the vehicle body structure 100. The third sliding seat 51 can also adopt a structure mode of a rotating shaft and a mounting seat to realize the rotation of the third shooting module 52 and the third light source 53 on the third sliding seat 51, so that the third shooting module 52 and the third light source 53 are more attached to the surface curved surface of the vehicle body structure 100, and the shooting definition is ensured.
In the method for detecting paint surface of a vehicle body according to the present embodiment, the carrier 1 carries the vehicle body structure 100, adjusts the moving position of the first slider 31 on the frame 2 and the rotation angle of the first rotating beam 32 so that the first light source 34 irradiates on a first preset position of the vehicle body structure 100, and photographs paint surface images of the first preset position of the vehicle body structure 100 through the first photographing module 33, the first preset position may be an upper surface and a front and rear surface of the vehicle body structure 100, adjusts the moving position of the second slider 41 on the frame 2 and the rotation angle of the second rotating beam 42 so that the second light source 44 irradiates on a second preset position of the vehicle body structure 100, photographs paint surface images of the second preset position of the vehicle body structure 100 through the second photographing module 43, the second preset position can be the arc transition surface of the vehicle body structure 100, and the moving position of the third sliding seat 51 on the frame 2 is adjusted, so that the third light source 53 irradiates on the third preset position of the vehicle body structure 100, and the paint image of the third preset position of the vehicle body structure 100 is shot through the third shooting module 52, the third preset position can be the side surface of the vehicle body structure 100, the focal length of the lens of the shooting module always keeps vertical to the surface of the vehicle body and is consistent in distance in the shooting process, the projection of the light source always keeps in the visual field range of the shooting module, and then paint images of the vehicle body structure 100 at different positions are obtained.
Compared with the scheme that the mechanical arm carries a camera light source, the invention has the advantages of low comprehensive cost, small occupied area, dynamic detection along with the line and high detection speed. Compared with a tunnel scheme, the invention has the advantages of high detection precision, large effective detection area and detectable vertical plane. According to the invention, the vehicle body moves forwards along with the production line body at a set speed, three groups of detection modules respectively follow the shape adjustment position and angle of the vehicle body from three directions, and continuously take pictures and take pictures, so that a complete image of the vehicle body is finally obtained. The invention not only can achieve the short-distance full-coverage drawing of the mechanical arm scheme, but also can have the high beat capacity of the tunnel scheme, and can adjust the detection module according to the three-dimensional modeling of the model of the vehicle to be detected so as to adapt to the change of the vehicle type.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. Along with type automobile body paint detection system, its characterized in that includes:
A carrier (1) for carrying a vehicle body structure (100), the vehicle body structure (100) being advanced at a set speed during a test;
The rack (2) is used for bearing the detection module;
The detection module is provided with three groups, and the surface of the vehicle body structure (100) is subjected to equal-angle and equidistant drawing;
The first detection module (3) comprises a first sliding seat (31), a first rotating beam (32), a first shooting module (33) and a first light source (34), wherein the first sliding seat (31) is movably arranged on the frame (2), the first rotating beam (32) is rotatably arranged on the first sliding seat (31), the first sliding seat (31) can drive the first rotating beam (32) to move up and down, the first rotating beam (32) is of a split type structural design, and the first shooting module (33) and the first light source (34) are both arranged on the first rotating beam (32); the first detection module (3) is used for shooting images of the upper surface, the front surface and the rear surface of the vehicle body structure (100);
The second detection module (4) comprises a second sliding seat (41), a second rotary beam (42), a second shooting module (43) and a second light source (44), wherein the second sliding seat (41) is movably arranged on the frame (2), the second rotary beam (42) is rotatably arranged on the second sliding seat (41), the second shooting module (43) and the second light source (44) are both arranged on the second rotary beam (42), and the second sliding seat (41) is of a split type structural design; the second detection module (4) is used for shooting transition surface images of the vehicle body structure (100) between the upper surface, the front surface, the rear surface and the left and right side surfaces;
The third detection module (5) comprises a third sliding seat (51), a third shooting module (52) and a third light source (53), wherein the third sliding seat (51) is movably arranged on the frame (2), and the third shooting module (52) and the third light source (53) are both arranged on the third sliding seat (51); the third detection module (5) is used for shooting left and right side surface images of the vehicle body structure (100);
Along with the forward movement of the vehicle body structure (100), the shooting module is attached to the light source, the three-dimensional curve of the vehicle body structure (100) rotates and fluctuates, and the shooting distance and the angle between the shooting module and the paint surface are controlled to be kept constant according to the forward movement speed of the vehicle body structure (100).
2. The vehicle body paint detection system according to claim 1, wherein the frame (2) comprises a support box (21) and a support column (22), the support column (22) is disposed on the support box (21), and the first slider (31) is movably disposed on the support column (22).
3. The vehicle body paint detection system according to claim 2, wherein the support column (22) is provided with a driving rack (23), the first sliding seat (31) is provided with a driving motor (35) and a driving gear, the driving motor (35) is used for driving the driving gear to rotate, and the driving gear is meshed with the driving rack (23).
4. The vehicle body paint detection system according to claim 2, wherein the supporting box (21) is provided with a first cylinder (24) and a first sliding rail (25), the second sliding seat (41) is in sliding fit with the first sliding rail (25), and the first cylinder (24) is used for driving the second sliding seat (41) to move.
5. The vehicle body paint detection system according to claim 2, wherein the supporting box (21) is provided with a second cylinder (26) and a second slide rail (27), the third slide seat (51) is in sliding fit with the second slide rail (27), and the second cylinder (26) is used for driving the third slide seat (51) to move.
6. The vehicle body paint detection system according to claim 1, wherein the first slide (31) is provided with a first motor (36) and a first support seat (37), the first rotating beam (32) is rotatably disposed on the first support seat (37), and the first motor (36) is used for driving the first rotating beam (32) to rotate.
7. The vehicle body paint detection system according to claim 1, wherein the second slider (41) includes a pillar (411) and a diagonal pillar (412) disposed on the pillar (411), and the second rotating beam (42) is rotatably disposed on the diagonal pillar (412).
8. The vehicle body paint detection system according to claim 7, wherein the diagonal column (412) is provided with a second motor (413) and a second support base (414), the second rotating beam (42) is rotatably disposed on the second support base (414), and the second motor (413) is used for driving the second rotating beam (42) to rotate.
9. The vehicle body paint detection system according to claim 1, wherein the first rotating beams (32) of the split structural design are positioned at the same height and have an included angle of 180 ° therebetween during operation; the second sliding seats (41) of the split type structure have an included angle smaller than 180 degrees in the working process.
10. A vehicle body paint detection method according to any one of claims 1 to 9, characterized in that a vehicle body structure (100) is paint detected using a vehicle body paint detection system according to any one of claims, said vehicle body paint detection method according to said type comprising the steps of:
the carrier (1) carries a vehicle body structure (100);
Adjusting the moving position of the first sliding seat (31) on the frame (2) and the rotating angle of the first rotating beam (32) so that the first light source (34) irradiates on a first preset position of the vehicle body structure (100), and shooting a paint image of the first preset position of the vehicle body structure (100) through the first shooting module (33);
Adjusting the moving position of the second sliding seat (41) on the frame (2) and the rotating angle of the second rotating beam (42) so that the second light source (44) irradiates on a second preset position of the vehicle body structure (100), and shooting a paint image of the second preset position of the vehicle body structure (100) through the second shooting module (43);
the moving position of the third sliding seat (51) on the frame (2) is regulated, so that the third light source (53) irradiates on a third preset position of the vehicle body structure (100), and a paint image of the third preset position of the vehicle body structure (100) is shot through the third shooting module (52).
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| CN115541598A (en) * | 2022-08-24 | 2022-12-30 | 深圳市二郎神视觉科技有限公司 | Automobile appearance detection method, device and system |
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| JP3271549B2 (en) * | 1997-05-20 | 2002-04-02 | 日産自動車株式会社 | Surface inspection equipment |
| KR100690083B1 (en) * | 2006-08-18 | 2007-03-08 | 주식회사 지니언 | Omnidirectional Imaging Device of Tubular Structure |
| JP6191204B2 (en) * | 2012-09-27 | 2017-09-06 | 日産自動車株式会社 | Appearance inspection apparatus and appearance inspection method for automobile body |
| CN109239086B (en) * | 2018-10-22 | 2023-11-17 | 上海易清智觉自动化科技有限公司 | Vehicle paint surface and appearance flaw detection system |
| CN218629555U (en) * | 2022-11-01 | 2023-03-14 | 深圳市二郎神视觉科技有限公司 | Automobile appearance detection device |
| CN219104709U (en) * | 2022-12-14 | 2023-05-30 | 南京云创大数据科技股份有限公司 | Tunnel type mirror-like workpiece surface defect detection system |
| CN117871537A (en) * | 2024-01-24 | 2024-04-12 | 成都小淞科技有限公司 | Lifting type vehicle body top surface detection system and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115326420A (en) * | 2022-07-29 | 2022-11-11 | 广州市斯睿特智能科技有限公司 | Automobile quality detection equipment and detection control method |
| CN115541598A (en) * | 2022-08-24 | 2022-12-30 | 深圳市二郎神视觉科技有限公司 | Automobile appearance detection method, device and system |
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