An automatic detection equipment for surface crack and scratch of super-long screw workpiece

Abstract

The application discloses a kind of full-automatic flaw detection equipment for surface crack and scratch of super-long screw workpiece, and relates to the technical field of screw detection.The application, including bottom plate, the middle part of the upper end of the bottom plate is fixedly connected with guide structure, the upper end of the bottom plate is provided with driving structure on one side of guide structure, the inner cavity of guide structure is symmetrically slidably connected with extrusion structure, the adjacent side between two extrusion structures is respectively rotatably connected with clamping structure, the upper end of guide structure is fixedly connected with detection installation structure along center line, the outer surface of two detection installation structures is provided with flaw detection structure in middle part, the right end of detection installation structure is provided with adjusting structure, the lower end of bottom plate is fixedly connected with intelligent module, the technical defects of existing super-long screw flaw detection equipment, such as strong support rigidity, workpiece easy to flex and deform, clamping easy to produce secondary scratch damage, low positioning accuracy and poor universality, are effectively overcome through the cooperative matching of the auxiliary supporting structure, driving structure, clamping structure and clamping adjusting structure.

Description

Technical Field

[0001] This invention relates to the field of screw inspection technology, and in particular to a fully automatic flaw detection device for surface cracks and impact damage on ultra-long screw workpieces. Background Technology

[0002] As a core component for mechanical transmission, connection, and fastening, screws are widely used in industries such as equipment manufacturing, automobiles, home appliances, and hardware. After the screw is machined, key parameters such as overall length, slot height, thread pitch, head slot dimensions, and straightness need to be inspected to ensure assembly accuracy and overall equipment performance.

[0003] A search revealed Chinese invention patent CN122591789A, which discloses a surface flaw detection device for a rolling mill. The device includes a first end seat, a second end seat, a strong magnetic chuck, a transfer mechanism, and a detection mechanism. The first and second end seats are arranged horizontally on the same straight line and connected by a reinforcing rod. The strong magnetic chuck is slidably mounted on the first end seat, with a strong magnet on its left end face to attract the entire detection device onto the target rolling mill. The transfer mechanism includes a screw rotatably connected between the first and second end seats, a lifting lug fixed to the first end seat, and a synchronous wheel rotatably connected to the lifting lug. The probe performs all-around, full-coverage flaw detection on the relatively rotating rolling mill surface, eliminating blind spots and being unaffected by rolling mill processing conditions. It boasts a high degree of automation and effectively reduces manual labor intensity.

[0004] Existing flaw detection equipment for ultra-long screws mostly adopts rigid support. Ultra-long screws have significant weight and span, making them prone to bending deformation during inspection and susceptible to secondary impact damage during clamping, resulting in poor workpiece support stability. Furthermore, traditional equipment relies on manual alignment and clamping, leading to low centering accuracy and insufficient clamping reliability. During workpiece rotation inspection, eccentricity and jamming are common, resulting in poor inspection consistency. In addition, traditional inspection methods are limited in scope and have blind spots, making it difficult to detect minute impact scratches and micro-cracks on the screw surface. The level of automation and defect detection accuracy are also low, failing to meet the high-precision batch flaw detection requirements for ultra-long screws.

[0005] Therefore, existing technologies are insufficient to meet the high-precision and high-efficiency flaw detection requirements of ultra-long screw workpieces, and improvements are urgently needed. Summary of the Invention

[0006] The purpose of this invention is to provide a fully automated flaw detection device for surface cracks and impact damage on ultra-long screw workpieces, which solves the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a fully automatic flaw detection device for surface cracks and impact damage on ultra-long screw workpieces, comprising a base plate, a guide structure fixedly connected to the middle of the upper end of the base plate, a drive structure located on one side of the guide structure at the upper end of the base plate, a pressing structure symmetrically slidably connected to the inner cavity of the guide structure, a clamping structure rotatably connected to adjacent sides of the two pressing structures, a rotary drive structure located at the upper left end of the left pressing structure, an auxiliary support structure fixedly connected to the middle of the upper end of the guide structure, a detection mounting structure symmetrically fixedly connected to the upper end of the guide structure along the center line, a flaw detection structure located at the middle of the outer surface of both detection mounting structures, an adjustment structure located at the right end of the detection mounting structure, and an intelligent module fixedly connected to the lower end of the base plate. The guide structure includes a placement plate fixedly connected to the middle of the upper part of the base plate. The upper part of the placement plate is symmetrically provided with guide grooves. A rotating rod is rotatably connected to the inner cavity of the guide groove. A drive structure is provided on one side of the upper part of the base plate located on the placement plate. Two sections of threads with opposite directions are symmetrically provided on the outer surface of the rotating rod.

[0008] Preferably, the driving structure includes a driving worm gear symmetrically rotatably connected to one side of the placement plate, a driving worm is rotatably connected to the upper end of the base plate above the driving worm gear via a bracket, a driving motor is fixedly connected to the upper end of the base plate between the two driving worms, the output end of the driving motor is fixedly connected to the two driving worms respectively, the driving worm and the driving worm gear mesh with each other, and the rotating shaft on one side of the two rotating rods passes through the placement plate and is fixedly connected to the driving worm gear.

[0009] Preferably, the extrusion structure includes sliders symmetrically slidably connected to the inner cavity of the guide groove, a rotating rod passing through the sliders and threadedly connected, a support plate fixedly connected to the upper end of two adjacent sliders, an extrusion plate fixedly connected to the middle of the upper end of the support plate, a clamping structure rotatably connected to adjacent sides of the two extrusion plates, and a rotation drive structure provided at the end of one extrusion plate away from the clamping structure.

[0010] Preferably, the clamping structure includes a clamping disk rotatably connected to one side of the two extrusion plates, clamping claws are uniformly rotatably connected to the outer surface of the clamping disk, a clamping adjustment groove is provided on the outer surface of the clamping claws away from the clamping disk, and a clamping adjustment structure is provided between adjacent clamping claws in the inner cavity of the clamping adjustment groove. The clamping adjustment structure includes an adjustment link rotatably connected to the inner cavity of the clamping adjustment groove. An adjustment disk is rotatably connected to the end of the adjustment link away from the clamping claw. An adjustment spring is connected between the clamping disk and the adjustment disk.

[0011] Preferably, the rotary drive structure includes a rotary worm gear rotatably connected to the upper left end of the left-side extrusion plate, a rotary worm gear rotatably connected to the lower end of the extrusion plate via a bracket, a rotary motor fixedly connected to the extrusion plate on one side of the rotary worm gear, the output end of the rotary motor fixedly connected to the rotary worm gear, the rotary worm gear fixedly connected to the clamping disc on the adjacent side, and the rotary worm gear and the rotary worm gear meshing with each other.

[0012] Preferably, the auxiliary support structure includes a support sleeve fixedly connected to the middle of the upper part of the placement plate, a support spring fixedly connected to the lower end of the inner cavity of the support sleeve, a support inner rod fixedly connected to the upper end of the support spring, the support inner rod slidably connected to the inner cavity of the support sleeve, and a support roller symmetrically rotatably connected to the upper end of the support inner rod via a bracket.

[0013] Preferably, the detection mounting structure includes mounting brackets fixedly connected to the four corners of the upper end of the placement plate, a limiting bracket fixedly connected between two adjacent mounting brackets, a threaded rod rotatably connected to the inner cavity of the limiting bracket, an adjustment structure provided on one side of the mounting bracket, and a flaw detection structure slidably connected to the outer surface of the limiting bracket.

[0014] Preferably, the flaw detection structure includes a sliding frame slidably connected to the outer surface of the limiting frame, an optical scanning module is symmetrically fixedly connected to the outer surface of the front sliding frame, and a detection probe is fixedly connected to the middle of the front end face of the rear optical scanning module.

[0015] Preferably, the adjustment structure includes an adjustment gear rotatably connected to one side of the mounting frame, a threaded rod with a rotating shaft near the adjustment gear passing through the mounting frame and fixedly connected to the adjustment gear, an adjustment toothed belt drivingly connecting the two adjustment gears, an adjustment motor fixedly connected to the lower end of the base plate near the detection mounting structure, a drive gear fixedly connected to the output end of the adjustment motor, and the end of the adjustment toothed belt away from the adjustment gear drivingly connected to the drive gear.

[0016] Preferably, the intelligent module includes protective posts fixedly connected to the four corners of the lower end of the base plate, protective plates fixedly connected to the lower end of the protective posts, a data transmission module fixedly connected to one side of the lower end of the base plate, a data control module fixedly connected to the middle of the lower end of the protective posts, a transmission cable connecting the data transmission module and the data control module, and the data transmission module is equipped with a wireless data transmission module.

[0017] The present invention has the following beneficial effects: This invention effectively overcomes the technical drawbacks of existing ultra-long screw flaw detection equipment by using a coordinated auxiliary support structure, driving structure, clamping structure and clamping adjustment structure. These drawbacks include high support rigidity, easy workpiece bending and deformation, easy secondary collision damage during clamping, low positioning accuracy and poor versatility. This equipment employs a flexible segmented support system composed of support springs, inner support rods, and support rollers. After the screw workpiece is placed, it can rely on its own weight to achieve elastic buffer support, which can adapt to the bearing conditions of heavy workpieces, disperse localized concentrated stress, and avoid thread damage and surface bumps caused by traditional rigid supports. It effectively suppresses sagging and bending deformation in the middle of ultra-long workpieces, ensuring the stability of the workpiece posture during the inspection process. At the same time, the drive structure drives the two-sided extrusion structure to feed synchronously in opposite directions through worm gear meshing transmission. In conjunction with the clamping plate, clamping adjustment groove, adjustment linkage, and adjustment plate, it completes adaptive centering clamping operations. It can effectively adapt to the machining tolerances and assembly deviations of the screw end, realize fully automated unmanned centering clamping, eliminate secondary damage such as scratches and bumps caused by manual clamping, and significantly improve the workpiece clamping and positioning accuracy and overall stability, providing a reliable operational foundation for subsequent high-precision flaw detection.

[0018] This invention utilizes an integrated worm gear transmission system combining a drive structure and a rotary drive structure, significantly improving the smoothness of equipment transmission, operational safety, and workpiece rotation uniformity. It solves the problems of transmission jamming, large speed fluctuations, easy loosening of clamping, and large rotational offset in traditional flaw detection equipment. Both the front and rear sets of worm gears employ a precision meshing structure, featuring a constant transmission ratio, smooth operation, and excellent reverse self-locking performance. After the workpiece is clamped and positioned, the transmission can be self-locked, effectively resisting vibration and force disturbances during operation, avoiding problems such as clamping loosening and positioning offset, and ensuring stable and reliable clamping conditions. During flaw detection, the rotary drive component drives the clamping disc to rotate at a uniform speed, and the support rollers rotate synchronously with the workpiece, without relative sliding or movement jamming throughout the entire process. This effectively protects the integrity of the screw thread surface and avoids friction damage. Uniform and stable circumferential rotation allows the entire surface of the workpiece to enter the inspection area in an orderly manner, eliminating the problems of missed detection and false detection caused by speed fluctuations. At the same time, the self-locking mechanism can lock the workpiece posture in time to prevent the workpiece from rotating accidentally, loosening and falling off, effectively improving the safety and stability of continuous automated operation of the equipment.

[0019] This invention achieves blind-spot-free, dual-mode, high-precision automated flaw detection of ultra-long screws throughout their entire stroke by using a coordinated design of the adjustment structure and axial scanning detection components. This solves the industry pain points of traditional detection methods, such as numerous blind spots, low detection accuracy, large human error, and low defect detection rates. The adjustment structure, composed of a motor, gears, and a toothed belt, forms a precision transmission unit that accurately drives the screw rod to rotate at a uniform speed. This drives the sliding frame carrying the detection components to perform high-precision linear reciprocating motion along the limit frame, allowing the detection components to slide smoothly along the workpiece axis, fully covering the entire detection area of ​​the screw and completely eliminating blind spots. The equipment employs a dual detection architecture with optical scanning and physical probes deployed on both sides, simultaneously performing optical imaging flaw detection and contact physical flaw detection. The two detection modes complement each other and mutually verify each other, accurately identifying various defects such as minor surface scratches, surface and internal micro-cracks, effectively reducing the probability of misjudgment and missed detection in a single detection mode. This invention integrates flexible support, automatic centering clamping, smooth rotary transmission, and dual-mode flaw detection functions to achieve an integrated intelligent inspection process. It reduces manual intervention, avoids secondary damage to workpieces and inspection errors caused by human operation, and effectively improves the automation, inspection accuracy, and operation efficiency of defect detection for ultra-long screws, meeting the high-precision industrial flaw detection needs of large-volume, large-specification screws.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a front-view stereoscopic structural diagram of the present invention; Figure 2 This is a side view of the three-dimensional structure of the present invention. Figure 3 This is a schematic diagram of the left side view of the three-dimensional structure of the present invention; Figure 4 This is a schematic diagram of the transverse half-section three-dimensional structure of the present invention; Figure 5 This is a schematic diagram of the longitudinal half-section three-dimensional structure of the present invention; Figure 6 For the present invention Figure 2 Enlarged structural diagram of region A in the middle; Figure 7 For the present invention Figure 3 Enlarged structural diagram of region B in the middle; Figure 8For the present invention Figure 4 A magnified structural diagram of region C in the middle.

[0023] The attached diagram lists the components represented by each number as follows: 1. Base plate; 2. Guide structure; 21. Placement plate; 22. Guide groove; 23. Rotating rod; 3. Drive structure; 31. Drive worm gear; 32. Drive worm; 33. Drive motor; 4. Extrusion structure; 41. Slider; 42. Support plate; 43. Extrusion plate; 5. Clamping structure; 51. Clamping disc; 52. Clamping claw; 53. Clamping adjustment groove; 54. Clamping adjustment structure; 541. Adjusting connecting rod; 542. Adjusting disc; 6. Rotation drive structure; 61. Rotating worm gear; 62. Rotating worm; 63. Rotating motor; 7. Auxiliary support 71. Support structure; 72. Support sleeve; 73. Support inner rod; 74. Support roller; 8. Inspection and installation structure; 81. Mounting bracket; 82. Limiting bracket; 83. Threaded rod; 9. Flaw detection structure; 91. Sliding bracket; 92. Optical scanning module; 93. Inspection probe; 10. Adjustment structure; 101. Adjusting gear; 102. Adjusting toothed belt; 103. Adjusting motor; 104. Drive gear; 11. Intelligent module; 111. Protective column; 112. Protective plate; 113. Data transmission module; 114. Data control module. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] Please see Figure 1-8 As shown, this embodiment is a fully automatic flaw detection device for surface cracks and impact damage of ultra-long screw workpieces, including a base plate 1, a guide structure 2 fixedly connected to the upper middle part of the base plate 1, a drive structure 3 set on one side of the guide structure 2 at the upper end of the base plate 1, a pressing structure 4 symmetrically slidably connected to the inner cavity of the guide structure 2, a clamping structure 5 rotatably connected to the adjacent side between the two pressing structures 4, a rotation drive structure 6 set on the upper left end of the left pressing structure 4, an auxiliary support structure 7 fixedly connected to the upper middle part of the guide structure 2, a detection mounting structure 8 symmetrically fixedly connected to the upper end of the guide structure 2 along the center line, a flaw detection structure 9 set on the middle part of the outer surface of both detection mounting structures 8, an adjustment structure 10 set on the right end of the detection mounting structure 8, and an intelligent module 11 fixedly connected to the lower end of the base plate 1; The guide structure 2 includes a placement plate 21 fixedly connected to the middle of the upper end of the base plate 1. The upper end of the placement plate 21 is symmetrically provided with guide grooves 22. A rotating rod 23 is rotatably connected to the inner cavity of the guide grooves 22. A drive structure 3 is provided on one side of the upper end of the base plate 1 located on the placement plate 21. The outer surface of the rotating rod 23 is symmetrically provided with two sections of threads in opposite directions. Through the guide structure 2 on the base plate 1, the drive structure 3, the extrusion structure 4 and the detection and installation structure 8 are installed and placed through the placement plate 21 and the guide grooves 22 during use. Then, the rotating rod 23 receives the power of the drive worm gear 31 to drive the two extrusion structures 4 to move synchronously in opposite directions, ensuring the symmetry and consistency of the clamping action on both sides, avoiding screw eccentricity due to asynchronous action, providing motion guarantee for subsequent precise centering clamping, and ensuring balanced force during the clamping process.

[0026] Furthermore, the drive structure 3 includes a drive worm gear 31 symmetrically rotatably connected to one side of the placement plate 21. The upper end of the base plate 1 is rotatably connected to the drive worm gear 31 via a bracket. The upper end of the base plate 1 is fixedly connected to the two drive worm gears 32 between the two drive worm gears 32. The output end of the drive motor 33 is fixedly connected to the two drive worm gears 32 respectively. The drive worm gears 32 and the drive worm gear 31 mesh with each other. The rotating shaft on one side of the two rotating rods 23 passes through the placement plate 21 and is fixedly connected to the drive worm gear 31. Through the drive structure 3 on the base plate 1, the drive motor 33 outputs power to drive the drive worm gear 32 to rotate during use. Relying on the worm gear meshing transmission principle, the drive worm gear 31 rotates synchronously and drives the rotating rods 23 to rotate, thereby driving the two extrusion structures 4 to move towards each other synchronously. This worm gear transmission structure has a reverse self-locking characteristic, which can lock the transmission posture after clamping in place to prevent loosening under force and ensure clamping stability. At the same time, the transmission ratio is precise and the power output is stable, which can realize the synchronous feeding of the two-sided extrusion structure, eliminate the problem of single-sided offset, and provide core power support for the precise centering and clamping of both ends of the screw, which greatly reduces the problems of clamping offset and positioning deviation of ultra-long screws.

[0027] Furthermore, the extrusion structure 4 includes sliders 41 symmetrically slidably connected to the inner cavity of the guide groove 22, a rotating rod 23 passing through the sliders 41 and threadedly connected, a support plate 42 fixedly connected to the upper end of two adjacent sliders 41, an extrusion plate 43 fixedly connected to the middle of the upper end of the support plate 42, a clamping structure 5 rotatably connected to adjacent sides of the two extrusion plates 43, and a rotation drive structure 6 is provided at the end of one extrusion plate 43 away from the clamping structure 5. Through the extrusion structure 4 on the guide structure 2, the extrusion structure 4 is driven to move closer to each other by the rotating rod 23 during use, precisely pushing the clamping adjustment structure 54 to abut against the screw thread end, providing initial driving force for adaptive clamping, ensuring that the clamping action is precisely connected with the screw thread structure, eliminating the need for manual positioning, and realizing automated triggering of clamping.

[0028] Furthermore, the clamping structure 5 includes clamping discs 51 rotatably connected to adjacent sides of the two extrusion plates 43. Clamping claws 52 are uniformly rotatably connected to the outer surface of the clamping discs 51. A clamping adjustment groove 53 is provided on the outer surface of the clamping claws 52 away from the clamping discs 51. A clamping adjustment structure 54 is provided between adjacent clamping claws 52 in the inner cavity of the clamping adjustment groove 53. Through the clamping structure 5 on the extrusion structure 4, the clamping discs 51 serve as end positioning and bearing components during use, which can accurately fit the end faces of both ends of the screw workpiece to achieve axial limiting and fixing. With the symmetrically arranged clamping structures on both sides, the radial and axial offset of the screw workpiece can be effectively constrained. The clamping adjustment groove 53 provides a limit guide stroke for the clamping adjustment action and can complete adaptive clamping with the swing action of the adjustment structure. This structure, together with the synchronous feeding action of the front extrusion structure 4, can achieve synchronous clamping and positioning at both ends, replacing the traditional manual clamping method and effectively eliminating problems such as screw surface bumps, scratches, and clamping misalignment caused during manual clamping. At the same time, in conjunction with the 7-segment support structure of the auxiliary support structure, a stable clamping system with rigid positioning at both ends and flexible support in the middle is formed, which completely solves the problem of clamping sway and bending deformation caused by the large length span and high self-weight of the ultra-long screw, and provides a stable workpiece clamping foundation for subsequent uniform rotation and high-precision flaw detection. The clamping adjustment structure 54 includes an adjusting rod 541 rotatably connected to the inner cavity of the clamping adjustment groove 53. An adjusting disc 542 is rotatably connected to the end of the adjusting rod 541 away from the clamping jaw 52. An adjusting spring is driven between the clamping disc 51 and the adjusting disc 542. The adjusting spring is sleeved between the clamping disc 51 and the adjusting disc 542 and is normally in an extended state, providing an elastic force to the adjusting disc 542 away from the clamping disc 51, so that the clamping jaw 52 remains open when not clamping. Through the clamping adjustment structure 54 on the clamping structure 5, the adjusting rod 541 adjusts with the clamping adjustment structure 54 during use. The movement of the adjusting plate 542 causes rotation, which is converted into the clamping action of the clamping adjustment groove 53. This achieves precise force transmission, ensures that the clamping force is controllable and adapts to the screw thread specifications, avoids over-clamping and damage to the threads, and ensures clamping firmness. Furthermore, through the interaction between the two ends of the adjusting plate 542 and the screw workpiece, the screw moves closer to the clamping plate 51, triggering the rotation of the adjusting linkage 541. This achieves adaptive adjustment of the clamping structure, eliminating the need for manual adaptation to different thread specifications, automatically completing clamping and positioning, adapting to multiple screw specifications, improving equipment versatility, and reducing manual intervention costs.

[0029] Furthermore, the rotary drive structure 6 includes a rotary worm gear 61 rotatably connected to the upper left end of the left extrusion plate 43. The extrusion plate 43 is rotatably connected to a rotary worm 62 via a bracket at the lower end of the rotary worm gear 61. A rotary motor 63 is fixedly connected to one side of the extrusion plate 43 and the output end of the rotary motor 63 is fixedly connected to the rotary worm 62. The rotary worm gear 61 is fixedly connected to the adjacent clamping disk 51. The rotary worm gear 61 and the rotary worm 62 mesh with each other. Through the rotary drive structure 6 on the extrusion structure 4, the rotary motor 63 drives the rotary worm 62 to rotate during use, which drives the meshing rotary worm gear 61 to rotate synchronously, thereby driving the clamping disk 51 to drive the screw workpiece to rotate at a uniform speed. At the same time, the supporting roller 74 rotates passively, so as to achieve the workpiece rotation without jamming or deviation. Worm gear drives have the advantages of uniform rotation speed, smooth transmission, and strong self-locking. They can accurately control the rotation speed of the workpiece and avoid the problems of missed or false detections caused by speed fluctuations. At the same time, they can automatically lock the workpiece posture after stopping the machine to prevent the workpiece from rotating and falling off freely, which greatly improves the safety of equipment operation and ensures that the circumferential surface of the screw can be exposed to the inspection area in all directions without blind spots, so as to realize full-circumference flaw detection.

[0030] Furthermore, the auxiliary support structure 7 includes a support sleeve 71 fixedly connected to the middle of the upper end of the placement plate 21. A support spring 72 is fixedly connected to the lower end of the inner cavity of the support sleeve 71, and a support inner rod 73 is fixedly connected to the upper end of the support spring 72. The support inner rod 73 is slidably connected to the inner cavity of the support sleeve 71, and a support roller 74 is symmetrically rotated to the upper end of the support inner rod 73 through a bracket. Through the auxiliary support structure 7 on the guide structure 2, the support spring 72, the support inner rod 73, and the support roller 74 work together to achieve adaptive flexible support for the ultra-long screw, effectively solving the problem of the large self-weight of the ultra-long screw and the easy damage to the workpiece by rigid support. After the workpiece is placed, it relies on its own gravity to press down the support roller 74, which drives the support inner rod 73 to move down and compress the support spring 72. The floating buffer support is achieved through the elastic contraction of the support spring 72. On the one hand, it can adapt to the self-weight and radial dimension error of ultra-long screws of different specifications, disperse the overall load of the workpiece, and avoid the squeezing marks and secondary impact damage to the screw thread surface caused by traditional rigid support; on the other hand, multiple sets of support points can provide segmented support for ultra-long screws, effectively suppressing the problems of sagging and bending deformation in the middle during the inspection of long screws, ensuring the overall stability of the screw posture, laying the foundation for subsequent accurate flaw detection. At the same time, during the screw rotation flaw detection process, the support roller 74 can rotate synchronously with the workpiece, eliminating relative sliding friction between the support structure and the screw surface, and protecting the integrity of the screw workpiece surface in all aspects.

[0031] Furthermore, the detection mounting structure 8 includes mounting brackets 81 fixedly connected to the four corners of the upper end of the placement plate 21. A limiting bracket 82 is fixedly connected between two adjacent mounting brackets 81. A threaded rod 83 is rotatably connected to the inner cavity of the limiting bracket 82. An adjustment structure 10 is provided on one side of the mounting bracket 81. A flaw detection structure 9 is slidably connected to the outer surface of the limiting bracket 82. Through the detection mounting structure 8 on the guide structure 2, the limiting bracket 82 provides guidance and limitation for the sliding bracket 91 during use, ensuring that the sliding bracket 91 slides smoothly along the preset trajectory, avoiding sliding deviation, ensuring the positioning accuracy of the detection component, providing structural support for the precise movement of the optical scanning module 92 and the detection probe 93, ensuring the stability of the detection trajectory, and then the rotation is achieved by the threaded rod 83 receiving the power of the adjustment structure 10. The rotational motion is converted into the linear sliding of the sliding bracket 91 through the threaded transmission. The movement is smooth and the positioning is accurate. The sliding stroke can be flexibly adjusted according to the screw length to ensure that the detection component covers the entire length of the screw and achieves detection without dead angles.

[0032] Furthermore, the flaw detection structure 9 includes a sliding frame 91 slidably connected to the outer surface of the limiting frame 82. An optical scanning module 92 is symmetrically fixedly connected to the outer surface of the front sliding frame 91, and a detection probe 93 is fixedly connected to the center of the front end face of the rear optical scanning module 92. By using the flaw detection structure 9 on the mounting structure 8, the optical scanning module 92 and the detection probe 93 are mounted on the sliding frame 91, achieving precise lateral displacement of the detection components during use. This ensures that the detection process covers the entire length of the screw, adapting to extra-long screws of different lengths. No manual movement of the detection components is required, improving detection efficiency and complete coverage. The optical detection module 93 then uses physical contact to detect three-dimensional defects such as dents and pits on the screw surface, compensating for the blind spots of optical detection in identifying deep and hidden defects. It complements the optical scanning module 92 to achieve dual optical and physical flaw detection, significantly reducing the missed detection rate and ensuring detection accuracy. Furthermore, the optical scanning module 92 enables non-contact scanning to quickly capture minute surface cracks and scratches, with the advantages of high sensitivity and non-destructiveness, compensating for the shortcomings of physical detection in identifying minute defects. Together with the detection probe 93, it achieves dual-modal detection, improving the comprehensiveness of defect identification.

[0033] Furthermore, the adjustment structure 10 includes an adjustment gear 101 rotatably connected to one side of the mounting frame 81. A rotating shaft of the threaded rod 83, near the adjustment gear 101, passes through the mounting frame 81 and is fixedly connected to the adjustment gear 101. An adjustment toothed belt 102 is connected between the two adjustment gears 101. An adjustment motor 103 is fixedly connected to the lower end of the base plate 1 near the detection mounting structure 8. A drive gear 104 is fixedly connected to the output end of the adjustment motor 103. The end of the adjustment toothed belt 102 away from the adjustment gear 101 is connected to the drive gear 104. Through the adjustment structure 10 on the detection mounting structure 8, the adjustment gear 101 is driven to rotate via the adjustment toothed belt 102 during use, causing the threaded rod 83 to rotate, thereby driving the sliding frame 91 to slide precisely laterally in a straight line along the limiting frame 82. The gear and toothed belt combination provides high transmission accuracy and smooth operation. Combined with the guiding and limiting function of the limiting frame 82, it ensures that the detection component moves at a uniform speed and in a straight line along the screw axis, achieving continuous scanning detection across the entire length of the ultra-long screw. Meanwhile, the optical scanning module 92 and the detection probe 93 are respectively located on the front and rear sides of the screw, and simultaneously complete optical imaging flaw detection and physical probe contact flaw detection, forming a dual flaw detection mechanism of optical + physical. It can accurately identify minor bumps and scratches on the screw surface, internal and surface cracks and defects. The two detection methods corroborate each other, complement each other and correct errors, completely solving the industry pain point of missed detection and misjudgment in single detection mode, and greatly improving the detection accuracy and detection rate of surface defects of ultra-long screws.

[0034] Furthermore, the intelligent module 11 includes protective posts 111 fixedly connected to the four corners of the lower end of the base plate 1. A protective plate 112 is fixedly connected to the lower end of the protective posts 111. A data transmission module 113 is fixedly connected to one side of the lower end of the base plate 1. A data control module 114 is fixedly connected to the middle of the lower end of the protective posts 111. The data transmission module 113 and the data control module 114 are electrically connected through a transmission cable. The data transmission module 113 is equipped with a wireless data transmission module. Through the intelligent module 11 on the base plate 1, the detection data of the optical scanning module 92 and the detection probe 93 are detected and statistically analyzed during use. Therefore, the surface data of the screw workpiece is measured and statistically analyzed, thereby realizing flaw detection.

[0035] Working principle: When working, the screw is placed between the two support rollers 74. At this time, due to the weight of the screw itself, the support rollers 74 and the inner support rod 73 move downward, so the support spring 72 contracts. At this time, the drive structure 3 is activated, causing the output end of the drive motor 33 to rotate, thus driving the worm gear 32 to rotate, which in turn causes the drive worm wheel 31, which meshes with the drive worm gear 32, to rotate. Therefore, the rotating rod 23 rotates, further causing the two side extrusion structures 4 to move closer to each other. Therefore, the two side clamping adjustment structures 54 and the two ends of the thread come into contact with each other. At this time, due to the interaction between the screw and the adjustment plate 542, the adjustment plate 542 moves closer to the clamping plate 51, thus causing the adjustment connecting rod 541 to rotate. Therefore, the clamping adjustment groove 53 clamps the two ends of the screw. At this time, the long screw workpiece is supported in sections by the two side clamping structures 5 and the auxiliary support structure 7. When the screw is being inspected for flaws, the rotary drive structure 6 is activated, causing the output end of the rotary motor 63 to rotate. This causes the rotary worm 62 to rotate, which in turn causes the rotary worm wheel 61, which meshes with the rotary worm 62, to rotate. Consequently, the clamping disc 51 rotates, thereby causing the threaded rod to rotate and simultaneously supporting the rotation of the roller 74. At this time, since the optical scanning module 92 and the detection probe 93 are located on the front and rear sides of the screw, the adjustment structure 10 is activated, causing the output end of the adjustment motor 103 to rotate, which in turn drives the gear 104 to rotate, thereby causing the adjustment belt 102 to rotate, and further causing the adjustment gear 101 to rotate. Therefore, the threaded rod 83 connected to the adjustment gear 101 rotates. At this time, through the rotation of the threaded rod 83, the sliding frame 91 slides left and right along the limit frame 82, and then the optical scanning module 92 and the detection probe 93 simultaneously perform optical and physical dual flaw detection on the surface of the screw workpiece.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automatic flaw detection device for surface cracks and impact damage on ultra-long screw workpieces, comprising a base plate (1), characterized in that: The bottom plate (1) is fixedly connected to the middle of the upper end of the guide structure (2), and the bottom plate (1) is provided with a drive structure (3) on one side of the guide structure (2). The inner cavity of the guide structure (2) is symmetrically connected to the extrusion structure (4). The two extrusion structures (4) are respectively rotatably connected to each other on the adjacent side. The left end of the extrusion structure (4) on the left side is provided with a rotation drive structure (6). The middle of the upper end of the guide structure (2) is fixedly connected to the auxiliary support structure (7). The upper end of the guide structure (2) is symmetrically fixedly connected to the detection installation structure (8) along the center line. The middle of the outer surface of the two detection installation structures (8) is provided with a flaw detection structure (9). The right end of the detection installation structure (8) is provided with an adjustment structure (10). The bottom plate (1) is fixedly connected to the lower end of the intelligent module (11). The guide structure (2) includes a placement plate (21) fixedly connected to the middle of the upper end of the base plate (1). The upper end of the placement plate (21) is symmetrically provided with guide grooves (22). The inner cavity of the guide groove (22) is rotatably connected with a rotating rod (23). The upper end of the base plate (1) is provided with a drive structure (3) on one side of the placement plate (21). The outer surface of the rotating rod (23) is symmetrically provided with two sections of threads in opposite directions.

2. The fully automatic flaw detection equipment for surface cracks and impact damage of ultra-long screw workpieces according to claim 1, characterized in that, The drive structure (3) includes a drive worm gear (31) symmetrically rotatably connected to one side of the placement plate (21). The upper end of the base plate (1) is located above the drive worm gear (31) and is rotatably connected to the drive worm (32) via a bracket. The upper end of the base plate (1) is fixedly connected between the two drive worms (32). The output end of the drive motor (33) is fixedly connected to the two drive worms (32) respectively. The drive worm (32) meshes with the drive worm gear (31). The rotating shaft on one side of the two rotating rods (23) passes through the placement plate (21) and is fixedly connected to the drive worm gear (31).

3. The fully automatic flaw detection equipment for surface cracks and impact damage of ultra-long screw workpieces according to claim 1, characterized in that, The extrusion structure (4) includes a slider (41) symmetrically slidably connected to the inner cavity of the guide groove (22), a rotating rod (23) passing through the slider (41) and threadedly connected, a support plate (42) fixedly connected to the upper end of two adjacent sliders (41), an extrusion plate (43) fixedly connected to the middle of the upper end of the support plate (42), a clamping structure (5) rotatably connected to the adjacent side of the two extrusion plates (43), and a rotation drive structure (6) is provided at the end of one extrusion plate (43) away from the clamping structure (5).

4. The fully automatic flaw detection equipment for surface cracks and impact damage of ultra-long screw workpieces according to claim 3, characterized in that, The clamping structure (5) includes a clamping disk (51) rotatably connected to one side of the two extrusion plates (43). The outer surface of the clamping disk (51) is uniformly rotatably connected with clamping claws (52). A clamping adjustment groove (53) is provided on the outer surface of the clamping claws (52) away from the clamping disk (51). A clamping adjustment structure (54) is provided between adjacent clamping claws (52) in the inner cavity of the clamping adjustment groove (53). The clamping adjustment structure (54) includes an adjustment link (541) rotatably connected to the inner cavity of the clamping adjustment groove (53). An adjustment disk (542) is rotatably connected to one end of the adjustment link (541) away from the clamping claw (52). An adjustment spring is connected between the clamping disk (51) and the adjustment disk (542).

5. The fully automatic flaw detection equipment for surface cracks and impact damage of ultra-long screw workpieces according to claim 3, characterized in that, The rotary drive structure (6) includes a rotary worm gear (61) rotatably connected to the upper left end of the left-side extrusion plate (43). The extrusion plate (43) is rotatably connected to a rotary worm (62) via a bracket at the lower end of the rotary worm gear (61). A rotary motor (63) is fixedly connected to one side of the extrusion plate (43) and the output end of the rotary motor (63) is fixedly connected to the rotary worm (62). The rotary worm gear (61) is fixedly connected to the clamping disk (51) on the adjacent side. The rotary worm gear (61) and the rotary worm (62) mesh with each other.

6. The fully automatic flaw detection equipment for surface cracks and impact damage of ultra-long screw workpieces according to claim 1, characterized in that, The auxiliary support structure (7) includes a support sleeve (71) fixedly connected to the middle of the upper end of the placement plate (21), a support spring (72) fixedly connected to the lower end of the inner cavity of the support sleeve (71), a support inner rod (73) fixedly connected to the upper end of the support spring (72), the support inner rod (73) slidably connected to the inner cavity of the support sleeve (71), and a support roller (74) symmetrically rotated at the upper end of the support inner rod (73) through a bracket.

7. The fully automatic flaw detection equipment for surface cracks and impact damage of ultra-long screw workpieces according to claim 1, characterized in that, The detection installation structure (8) includes mounting brackets (81) fixedly connected to the four corners of the upper end of the placement plate (21), a limiting bracket (82) fixedly connected between two adjacent mounting brackets (81), a threaded rod (83) rotatably connected to the inner cavity of the limiting bracket (82), an adjustment structure (10) is provided on one side of the mounting bracket (81), and a flaw detection structure (9) is slidably connected to the outer surface of the limiting bracket (82).

8. The fully automatic flaw detection equipment for surface cracks and impact damage of ultra-long screw workpieces according to claim 7, characterized in that, The flaw detection structure (9) includes a sliding frame (91) that is slidably connected to the outer surface of the limiting frame (82). An optical scanning module (92) is symmetrically fixedly connected to the outer surface of the front sliding frame (91), and a detection probe (93) is fixedly connected to the middle of the front end face of the rear optical scanning module (92).

9. The fully automatic flaw detection equipment for surface cracks and impact damage of ultra-long screw workpieces according to claim 7, characterized in that, The adjustment structure (10) includes an adjustment gear (101) rotatably connected to one side of the mounting frame (81), a threaded rod (83) with a shaft on the side near the adjustment gear (101) passing through the mounting frame (81) and fixedly connected to the adjustment gear (101), an adjustment toothed belt (102) being driven between the two adjustment gears (101), an adjustment motor (103) being fixedly connected to the lower end of the base plate (1) near the detection mounting structure (8), a drive gear (104) being fixedly connected to the output end of the adjustment motor (103), and a drive gear (104) being driven by the end of the adjustment toothed belt (102) away from the adjustment gear (101).

10. The fully automatic flaw detection equipment for surface cracks and impact damage of ultra-long screw workpieces according to claim 1, characterized in that, The intelligent module (11) includes protective posts (111) fixedly connected to the four corners of the lower end of the base plate (1), a protective plate (112) fixedly connected to the lower end of the protective posts (111), a data transmission module (113) fixedly connected to one side of the lower end of the base plate (1), a data control module (114) fixedly connected to the middle of the lower end of the protective posts (111), a transmission cable connecting the data transmission module (113) and the data control module (114), and the data transmission module (113) is equipped with a wireless data transmission module.

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