CN-121978117-A - Guide rail surface defect detection equipment and method based on industrial vision

Abstract

The invention discloses a guide rail surface defect detection device and a detection method thereof based on industrial vision, which belong to the technical field of industrial vision detection, the guide rail surface defect detection device and the detection method thereof based on industrial vision, comprising a frame body, wherein the top of the frame body is provided with a shading frame, the frame body is provided with two mounting grooves, the frame body is provided with a conveying component for conveying the guide rail body, the both ends of shading frame are equipped with the guide assembly with the automatic butt of centering of both sides wall of guide rail body respectively, are equipped with supporting component on two mounting grooves, be equipped with the visual detection subassembly that is connected with supporting component in the shading frame, be equipped with drive assembly between guide assembly and the supporting component, have once comprehensive detection, avoid reflection of light crosstalk, adjust and satisfy the advantage of the high-efficient accurate detection demand of the guide rail body surface defect of different specifications in centering.

Inventors

• FENG RONGZHOU
• NIU BIN

Assignees

• 陕西中科同创实业有限公司

Dates

Publication Date

20260505

Application Date

20260409

Claims (10)

1. 1. The utility model provides a guide rail surface defect check out test set based on industry vision, includes the support body, its characterized in that, the top of support body is equipped with the light screen frame, be equipped with two mounting grooves on the support body, be equipped with the conveying subassembly that is used for carrying the guide rail body on the support body, still include: The guide assemblies are respectively arranged at two ends of the shading frame and automatically center and butt against two side walls of the guide rail body; The support assembly is arranged on the two mounting grooves and is used for preventing shaking in the conveying process of the guide rail body, the support assembly comprises a ring frame a and a ring frame b which are respectively arranged in the two mounting grooves, side support modules are arranged in the ring frame a and the ring frame b, a bottom support module which is contacted with the bottom of the guide rail body is arranged in the ring frame a, and a top light pressing module which is movably contacted with the top of the guide rail body is arranged in the ring frame b; The visual detection assembly is arranged in the shading frame and is connected with the supporting assembly, the visual detection assembly is used for circumferentially detecting surface defects of the guide rail body, the visual detection assembly comprises a left detection module, a top detection module, a bottom detection module and a right detection module, the left detection module and the right detection module are respectively connected with corresponding side supporting modules in the ring frame a and the ring frame b through mounting plates, the left detection module and the right detection module are respectively positioned at one sides of the ring frame a and the ring frame b, which are far away from each other, and the left detection module and the right detection module are respectively positioned at two sides of the guide rail body, the top detection module is positioned at the upper part of the inner side of the ring frame a, and the bottom detection module is positioned at the lower part of the inner side of the ring frame b; the transmission assembly is arranged between the guide assembly and the support assembly and is used for driving the top detection module and the bottom detection module to be close to or far away from each other.
2. 2. The industrial vision-based guide rail surface defect detection device according to claim 1, wherein the guide assembly comprises mounting frames symmetrically arranged at the ends of the light shielding frames, two mounting frames are respectively positioned at two sides of the guide rail body, one side of each mounting frame, which is close to the guide rail body, is rotationally provided with a plurality of guide rollers, the plurality of guide rollers are distributed in a shape of 'vertical sliding plate', the top of each guide roller is provided with a belt wheel a, the outer part of each mounting frame is rotationally provided with a belt wheel b, the belt wheels b and the belt wheels a are connected through a transmission belt, a motor a connected with the belt wheels b is mounted on each mounting frame, transverse sliding grooves perpendicular to the conveying direction of the conveying assembly are symmetrically formed at the ends of the light shielding frames, vertical sliding plates connected with the corresponding mounting frames are slidingly arranged in the transverse sliding grooves, the ends of the light shielding frames are rotationally provided with a rotary table, two guide grooves are circumferentially distributed on the rotary table, one vertical sliding plate is provided with a sliding column a penetrating through the other vertical sliding plate, one end of each sliding rod is far away from the connected with the corresponding vertical sliding plate, and one end plate is provided with a vertical end plate, and a spring sleeve penetrating through the sliding plate a sliding plate is connected with the vertical sliding plate.
3. 3. The industrial vision-based guide rail surface defect detecting apparatus according to claim 2, wherein the length direction of the guide groove is at an acute angle to the radial direction of the turntable.
4. 4. The industrial vision-based guide rail surface defect detecting apparatus according to claim 1, wherein the bottom supporting module comprises a lower supporting frame arranged at the lower part of the inner side of the ring frame a, a plurality of lower bearing rollers are rotatably arranged at the top of the lower supporting frame, and the top of the lower bearing rollers is contacted with the bottom of the guide rail body.
5. 5. The industrial vision-based guide rail surface defect detection device according to claim 4, wherein the top light-pressure module comprises a sliding square cylinder slidably arranged at the upper part of the inner side of the ring frame b, a plurality of upper pressure rollers are rotatably arranged at the bottom of the sliding square cylinder, and a spring b is connected between the top of the ring frame b and the sliding square cylinder.
6. 6. The industrial vision-based guide rail surface defect detection device according to claim 5, wherein the side support module comprises fixed groove plates symmetrically arranged at two ends of the inner sides of the ring frame a and the ring frame b, a movable seat is slidably arranged in the fixed groove plates, one ends, close to each other, of the two movable seats are rotatably provided with side supporting rollers movably abutted to the side wall of the guide rail body, connecting rods are arranged on the movable seats, lifting plates are slidably arranged at the outer sides of the lower support frame and the sliding square cylinder, and lifting groove plates in sliding fit with the corresponding connecting rods are symmetrically arranged at two ends of the lifting plates.
7. 7. The industrial vision-based guide rail surface defect detecting apparatus according to claim 6, wherein the driving assembly comprises a link plate a connected between the moving seat in the ring frame a and the corresponding mounting frame, a link plate b connected between the corresponding two moving seats in the ring frame a and the ring frame b, respectively, and a link plate c connected between the moving seat in the ring frame b and the corresponding mounting frame.
8. 8. The industrial vision-based guide rail surface defect detection device according to claim 7, wherein the transmission assembly further comprises an inner gear ring and a rotating rod which are rotatably arranged between the ring frame a and the ring frame b, transmission gears a meshed with the inner gear ring are movably arranged inside the ring frame a and the ring frame b, the transmission gears a are connected with the end parts of the rotating rod, fixed seats are arranged on the upper inner part of the ring frame a and the lower inner part of the ring frame b, a sliding seat connected with the top detection module or the bottom detection module is slidably arranged on the fixed seats, a connecting groove plate is arranged at one end, far away from the top detection module or the bottom detection module, of the sliding seat, a transmission gear b meshed with the inner gear ring is rotatably arranged on the fixed seat, a sliding column b in sliding fit with the connecting groove plate is arranged on the side wall edge of the transmission gear b, a standing groove plate is arranged on the connecting plate b, a deflector rod is arranged on the rotating rod, and a sliding column c in sliding fit with the standing groove plate is arranged on the deflector rod.
9. 9. The industrial vision-based rail surface defect detecting apparatus of claim 1, wherein the left side detecting module, the top detecting module, the bottom detecting module, and the right side detecting module each comprise a light source and an industrial camera, the light source being located on a side of the industrial camera near an entrance end of the light shielding frame.
10. 10. A method for detecting a rail surface defect detecting apparatus based on industrial vision, characterized by using the rail surface defect detecting apparatus based on industrial vision as claimed in any one of claims 1 to 9, comprising the steps of: step S1, centering adjustment is carried out on guide rail bodies with different specifications conveyed by a conveying assembly through a guiding assembly; S2, adaptively adjusting the positions or heights of the left detection module, the top detection module, the bottom detection module and the right detection module through the matching among the guide assembly, the support assembly and the transmission assembly, so as to ensure the effective detection precision of the left detection module, the top detection module, the bottom detection module and the right detection module on the corresponding surface to be detected of the guide rail body; Step S3, the left side detection module, the top detection module, the bottom detection module and the right side detection module are arranged in a front-back staggered mode, the guide rail body in the conveying process is comprehensively detected once, and the photographed images of the left side detection module, the top detection module, the bottom detection module and the right side detection module are subjected to image splicing through an image splicing technology, so that the images are detected and analyzed.

Description

Guide rail surface defect detection equipment and method based on industrial vision Technical Field The invention relates to the technical field of industrial vision detection, in particular to guide rail surface defect detection equipment and a guide rail surface defect detection method based on industrial vision. Background The guide rail is a groove or ridge made of metal or other material that can receive, secure, guide and reduce friction with a moving device or equipment. The guide rail consists of a moving part and a bearing part, and the guide rail pair ensures the correct movement track of the executing part when various machines run. Among them, the guiding accuracy and accuracy retention of the guide rail are extremely important. In the production process of the guide rail, appearance defect detection is required to be carried out on the guide rail so as to ensure the stability of guide precision and precision retention in the use process of the guide rail. The existing guide rail surface defect detection device generally conveys guide rails to the lower part of an industrial camera through a conveying mechanism, the industrial camera detects appearance defects of the surface, then the guide rails are turned over through a turning mechanism, comprehensive detection of the guide rails is achieved through multiple turning, but the detection time of the detection mode is long, single detection can only detect appearance defects of single surfaces of the guide rails, rapid appearance defect detection of batch guide rails cannot be met, meanwhile, the position of the industrial camera is fixed, the distance between the industrial camera and the surface to be detected of the guide rails cannot be adjusted, the distance between the industrial camera and the surface to be detected of the guide rails with different specifications is different, and consistency of appearance defect detection precision of the guide rails with different specifications cannot be guaranteed. Accordingly, there is a need to provide an apparatus for detecting surface defects of guide rails based on industrial vision and a method for detecting the same, which aim to solve the above problems. Disclosure of Invention Aiming at the defects existing in the prior art, the embodiment of the invention aims to provide a guide rail surface defect detection device and a guide rail surface defect detection method based on industrial vision so as to solve the problems in the background art. In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a guide rail surface defect check out test set based on industry vision, includes the support body, the top of support body is equipped with the shading frame, be equipped with two mounting grooves on the support body, be equipped with the conveying assembly who is used for carrying the guide rail body on the support body, still include: The guide assemblies are respectively arranged at two ends of the shading frame and automatically center and butt against two side walls of the guide rail body; The support assembly is arranged on the two mounting grooves and is used for preventing shaking in the conveying process of the guide rail body, the support assembly comprises a ring frame a and a ring frame b which are respectively arranged in the two mounting grooves, side support modules are arranged in the ring frame a and the ring frame b, a bottom support module which is contacted with the bottom of the guide rail body is arranged in the ring frame a, and a top light pressing module which is movably contacted with the top of the guide rail body is arranged in the ring frame b; The visual detection assembly is arranged in the shading frame and is connected with the supporting assembly, the visual detection assembly is used for circumferentially detecting surface defects of the guide rail body, the visual detection assembly comprises a left detection module, a top detection module, a bottom detection module and a right detection module, the left detection module and the right detection module are respectively connected with corresponding side supporting modules in the ring frame a and the ring frame b through mounting plates, the left detection module and the right detection module are respectively positioned at one sides of the ring frame a and the ring frame b, which are far away from each other, and the left detection module and the right detection module are respectively positioned at two sides of the guide rail body, the top detection module is positioned at the upper part of the inner side of the ring frame a, and the bottom detection module is positioned at the lower part of the inner side of the ring frame b; the transmission assembly is arranged between the guide assembly and the support assembly and is used for driving the top detection module and the bottom detection module to be close to or far away from each other. As