Bolt surface thread defect detection device

Abstract

The utility model provides a bolt surface thread defect detection device, which relates to the field of thread defect detection and comprises a ring plate and a spring. A reversing motor is installed on the upper side face of the ring plate, a driving gear is installed on a motor shaft of the reversing motor, a support is connected to the upper side face of the ring plate through bolts, a sliding block is connected to the front side face of the support through bolts, and a visual camera is installed on the front side face of the sliding block. A clamping rod is welded at one end of the spring, and a placing seat is welded at the other end of the spring; through arrangement of a driving gear, a rotating stand, a clamping rod and a placing seat, all-directional surrounding shooting of a group of visual cameras on a surface thread structure of a bolt detection piece is realized, the use cost of camera equipment is reduced, visual detection of thread defects is more flexible, and the detection efficiency is improved. The problems that in traditional thread defect detection, due to the fact that multiple sets of visual camera devices are adopted for thread structure shooting, the use cost of the devices is high, the shooting positions of the visual cameras are fixed, and the thread structures cannot be flexibly and comprehensively shot are solved.

Description

Technical Field

[0001] This utility model belongs to the field of thread defect detection, and more specifically, it relates to a device for detecting thread defects on the surface of bolts. Background Technology

[0002] Thread defect detection refers to the use of specific inspection techniques and methods to identify, judge, and analyze the threaded parts of bolts to ensure that the quality of the threads meets relevant standards and usage requirements, thus guaranteeing the reliability and safety of bolt components in practical applications. Currently, thread defect detection typically uses multiple sets of vision cameras to capture images of the bolt's threaded surface from multiple angles. The threaded images captured by the vision cameras are then compared and contrasted with standard threaded images. This allows inspectors to magnify and observe fracture marks on the bolt's thread surface, thereby identifying and determining whether there are processing defects. Therefore, traditional non-contact vision thread inspection requires multiple vision cameras to capture images from different positions, increasing the equipment cost for visual inspection of bolt surface thread defects. Furthermore, the fixed installation positions of the vision cameras prevent flexible, circumferential imaging of the bolt's threaded surface from different directions. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a bolt surface thread defect detection device, which solves the problems of high equipment operating costs and the inability to flexibly and comprehensively capture thread structures due to the fixed shooting positions of the visual cameras in traditional thread defect detection methods that require multiple sets of visual camera equipment to capture thread structure images.

[0004] This utility model provides a bolt surface thread defect detection device, including a shield; a handle is welded to the upper side of the shield, and a lamp holder is welded to the inner side of the shield; it also includes a pressure cylinder, a ring plate, and a spring; a column is welded to the lower side of the ring plate, a base is welded to the bottom of the column, a control unit is mounted on the upper side of the base, a rotating frame is rotatably connected to the inner side of the ring plate, a guide support rod is welded to the inner side of the rotating frame, a placement seat is welded to the other end of the guide support rod, a bolt detection piece is placed on the upper side of the placement seat, a frame is welded to the upper side of the placement seat, a lamp holder is welded to the upper side of the frame, and a pressure cylinder, a ring plate, and a spring are mounted on the upper side of the ring plate. A commutator motor has a drive gear mounted on its motor shaft. A bracket is bolted to the upper side of the ring plate near the rear end, and a slider is bolted to the front side of the bracket. A vision camera is mounted on the front side of the slider. Both the left and right sides of the slider have protruding plates, and a through hole is located at the center of the front side of the protruding plate. A clamping bolt is inserted into the through hole of the slider, and a clamping nut is screwed onto the outer side of the clamping bolt. The outer side of the enclosure has six sets of through slots, which are arranged in a circular array around the vertical central axis of the enclosure. A clamping rod is welded to one end of the spring, and a placement seat is welded to the other end of the spring.

[0005] In at least some embodiments, the rotating frame is a through-cylinder structure, the inner side of the rotating frame cylinder structure is provided with a threaded structure, and the outer side of the rotating frame cylinder structure is provided with an external tooth structure, and the driving gear is connected in mesh with the external tooth structure of the rotating frame.

[0006] In at least some embodiments, the number of clamping rods is six groups, and the six groups of clamping rods are respectively inserted into the six groups of through grooves of the surrounding frame. Each group of clamping rods is an inverted L-shaped structure, the upper side of the clamping rod is provided with an inclined surface structure, the outer side of the clamping rod is provided with a through hole near the bottom end, and the guide support rod is inserted into the through hole of the clamping rod.

[0007] In at least some embodiments, the outer side of the pressing cylinder is provided with a threaded structure, and the outer side of the pressing cylinder is connected in threaded engagement with the threaded structure on the inner side of the rotating frame cylinder.

[0008] In at least some embodiments, the number of lamp holders is two groups, and each group of lamp holders is a through-circular structure. The inner side of the lamp holder circular structure is provided with an inclined surface structure, and twenty groups of LED lamp stickers are bonded on the inclined surface of the lamp holder. The LED lamp stickers are arranged in a ring array around the vertical central axis of the lamp holder.

[0009] In at least some embodiments, the front side of the support is provided with two groups of front-to-back through long grooves, the clamping bolts are inserted into the long grooves of the support, and the through-hole of the convex plate of the sliding block is connected to the long grooves of the support.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. In the utility model, the gear meshing transmission structure composed of the driving gear and the rotating frame external tooth driven by the reversing motor operates, the rotating frame drives the six groups of clamping rods on the upper side of the placing seat to rotate by the guide support rods connected by welding, so that the horizontal level of the bolt detection piece is clamped and fixed, one visual camera realizes omnidirectional surrounding shooting of the surface thread structure of the bolt detection piece in the rotating process, the traditional thread visual detection adopts the shooting mode of multiple different fixed positions of the visual camera, the equipment cost is reduced, and the visual detection of the thread surface defect is more comprehensive and flexible. DRAWINGS

[0012] Figure 1 is a structural schematic diagram of the utility model.

[0013] Figure 2 is a sectional structure schematic diagram of the utility model.

[0014] Figure 3 is a structure schematic diagram of the utility model. Figure 2 A part of the utility model is enlarged.

[0015] Figure 4 is a main view structure schematic diagram of the utility model in a shield opening state.

[0016] Figure 5 is the rear view structure schematic diagram of the shade in the open state of the utility model.

[0017] Figure 6 is the right view structure schematic diagram of the shade in the open state of the utility model.

[0018] Figure 7 is the front view structure schematic diagram of the shade in the open state of the utility model.

[0019] Figure 8 is the side view structure schematic diagram of the shade in the open state of the utility model.

[0020] Reference signs: 1, handle; 2, shade; 3, base; 4, stand; 5, placing seat; 6, driving gear; 7, LED lamp paste; 8, pressing cylinder; 9, bolt detection piece; 10, lamp holder; 11, ring plate; 12, support; 13, sliding block; 14, visual camera; 15, reversing motor; 16, control machine; 17, rotating frame; 18, clamping bolt; 19, clamping nut; 20, clamping rod; 21, spring; 22, guide support rod; 23, enclosure. DETAILED DESCRIPTION

[0021] The embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0022] As Figures 1-8As shown, the utility model provides a bolt surface thread defect detection device, including shade 2, the upper side surface welding of shade 2 has handle 1, the inner side surface welding of shade 2 has lamp holder 10, still include pressure cylinder 8, circle board 11 and spring 21, the lower side surface welding of circle board 11 has stand 4, the bottom end welding of stand 4 has base 3, the upper side surface mounting of base 3 has control machine 16, the inner side surface rotationally connected of circle board 11 has rotating frame 17, the inner side surface welding of rotating frame 17 has guide support rod 22, the other end welding of guide support rod 22 has the seat 5 of placement, the upper side surface of seat 5 of placement has bolt detection piece 9, the upper side surface welding of seat 5 of placement has enclosure 23, the upper side surface welding of enclosure 23 has lamp holder 10, the upper side surface mounting of circle board 11 has reversing motor 15, the motor shaft of reversing motor 15 is installed drive gear 6, the upper side surface of circle board 11 is close to the position of rear end and is connected with support 12 by bolt, the front side of support 12 is connected with sliding block 13 by bolt, visual camera 14 is installed on the front side of sliding block 13, the left side and the right side of sliding block 13 are both equipped with the convex plate, the front side center position of convex plate is equipped with through -hole, the through -hole of sliding block 13 is inserted with clamping bolt 18, and the outer side surface of clamping bolt 18 is screwed with clamping nut 19, the outer side of enclosure 23 is equipped with six groups of through -groove, and the through -groove of enclosure 23 is annular array distribution around the vertical center axis of enclosure 23, one end welding of spring 21 has clamping rod 20, and the other end welding of spring 21 has seat 5 of placement.

[0023] In the embodiment of the present disclosure, the rotating frame 17 is a through cylinder structure from top to bottom, the inner side of the rotating frame 17 cylinder structure is provided with a thread structure, the outer side of the rotating frame 17 cylinder structure is provided with an external tooth structure, the drive gear 6 is engagedly connected at the external tooth structure of the rotating frame 17, so that the reversing motor 15 drives the rotating frame 17 to rotate in the inner side of the circle board 11 through the drive gear 6, and the rotating frame 17 drives the seat 5 of placement to rotate through the guide support rod 22, so that the seat 5 of placement drives the bolt detection piece 9 placed on the upper side to rotate, changes the horizontal direction of the outer side of the bolt detection piece 9, and the visual camera 14 comprehensively shoots the thread structure on the outer side of the bolt detection piece 9.

[0024] In the embodiment of the present disclosure, the number of clamping rods 20 is six groups, the six groups of clamping rods 20 are respectively inserted in the six groups of through grooves of the enclosure 23, each group of clamping rods 20 is an inverted L-shaped structure, the upper side of the clamping rod 20 is provided with an inclined surface structure, the outer side of the clamping rod 20 is provided with a through hole near the bottom end, and the guide support rod 22 is inserted in the through hole of the clamping rod 20, so that the clamping rod 20 moves along the through groove wall of the enclosure 23 and the outer side of the guide support rod 22 to be centripetally oriented, and the clamping rod 20 stably contacts the nut structure of the bolt detection piece 9 to be extruded and clamped.

[0025] In the embodiment of the present disclosure, the outer side surface of the pressing cylinder 8 is provided with a threaded structure, and the outer side surface of the pressing cylinder 8 is threadedly engaged with the threaded structure on the inner side surface of the cylinder body of the rotating frame 17, so that the pressing cylinder 8 moves up and down along the inner side surface of the rotating frame 17 during rotation. The bottom end of the pressing cylinder 8 extrudes the inclined surface structure of the six groups of clamping rods 20, so that the clamping rods 20 move along the through slot of the guide support rod 22 and the surrounding frame 23 to the vertical central axis direction of the placement seat 5. The six groups of clamping rods 20 clamp the nut part of the bolt detection piece 9, so that the bolt detection piece 9 stably rotates on the upper side surface of the placement seat 5, and ensures that the visual camera 14 stably and clearly captures the bolt detection piece 9.

[0026] In the embodiment of the present disclosure, the number of lamp holders 10 is two groups, and each group of lamp holders 10 is a through circle structure. The inner side surface of the circular structure of the lamp holder 10 is an inclined surface structure, and twenty groups of LED lamp stickers 7 are bonded on the inclined surface of the lamp holder 10. The LED lamp stickers 7 are arranged in a ring array around the vertical central axis of the lamp holder 10. The LED lamp stickers 7 bonded by the two groups of lamp holders 10 surround the bolt detection piece 9, improve the brightness of the captured image of the visual camera 14, and reduce the shadow of the bolt detection piece 9 through the ring array distribution of the LED lamp stickers 7. The structure of the bolt detection piece 9 captured by the visual camera 14 is more clear.

[0027] In the embodiment of the present disclosure, the front side surface of the support 12 is provided with two groups of front and rear through long slot, and the clamping bolt 18 is inserted into the long slot of the support 12. The lug plate through hole of the sliding block 13 is connected to the long slot of the support 12, so that the sliding block 13 is fixed at any height position of the long slot of the support 12 through the clamping bolt 18 and the clamping nut 19. The clamping structure is convenient for the sliding block 13 to carry the visual camera 14 to capture the thread structure of the outer side surface of the bolt detection piece 9 at different height positions.

[0028] The specific use mode and effect of the embodiment are as follows:

[0029] The utility model discloses a bolt detection piece 9 surface thread defect's visual shooting detection work is carried out, first bolt detection piece 9 is placed vertically on the upside of placing seat 5, then manually rotate pressure cylinder 8, because the pressure cylinder 8 outside face thread engagement is connected at the thread structure of the inside surface of rotary frame 17, and the pressure cylinder 8 rotates and moves downwards, at this moment, the pressure cylinder 8 bottom end extrudes the inclined plane structure of six sets of clamping rod 20, and six sets of clamping rod 20 are along the through groove of surrounding frame 23 and the guiding support rod 22 and overcome the elastic force of spring 21 and move centripetally and directionally synchronously, until six sets of clamping rod 20 synchronously extrude and contact the nut outside surface of bolt detection piece 9, and six sets of clamping rod 20 are centrally clamped and fixed to bolt detection piece 9, then handheld handle 1, and the cover 2 is buckled on the upside of base 3, at this moment, the cover 2 is wrapped in the outside of bolt detection piece 9 and visual camera 14, avoids the influence of stray light irradiation on the shooting of visual camera 14, and control machine 16 controls the LED lamp paste 7 of two sets of lamp holders 10 adhesion and carries out bright irradiation around bolt detection piece 9, and control machine 16 controls visual camera 14 and carries out shooting to the thread structure on the surface of bolt detection piece 9, then control machine 16 controls the reversing motor 15 and drives the driving gear 6 to rotate, and the driving gear 6 drives the rotary frame 17 of outside engagement connection to rotate, and the rotary frame 17 drives the placing seat 5 to rotate synchronously through the guiding support rod 22 of welding connection, and the bolt detection piece 9 clamped and placed on the upside of placing seat 5 rotates automatically, and visual camera 14 carries out shooting to the thread structure on the different surface of bolt detection piece 9, and visual camera 14 transmits the image of shooting to external computer through data line, and the detection personnel observes and identifies.

[0030] The installation mode, connection mode or setting mode of all the above components are common mechanical modes, such as welding, threaded connection, screw connection, and the specific structure, model and coefficient index of all the components are self-owned technology, as long as the beneficial effects can be achieved, and the implementation can be carried out. The above-mentioned LED lamp paste 7, visual camera 14, reversing motor 15 and control machine 16 are common devices on the market, and when purchased and used, they only need to be connected according to the instruction manual purchased together, so the detailed description is omitted here.

[0031] The technical scheme of the utility model is not limited to the scope of the utility model embodiments, and the technical content not described in detail in the utility model is known technology.

Claims

1. A bolt surface thread defect detection device, comprising a cover (2), a handle (1) is welded on the upper side of the cover (2), and a lamp holder (10) is welded on the inner side of the cover (2); characterized in that: It also includes the pressure cylinder (8), the ring plate (11) and the spring (21); the lower side of the ring plate (11) is welded with the column (4), the bottom end of the column (4) is welded with the base (3), the upper side of the base (3) is installed with the control machine (16), the inner side of the ring plate (11) is rotatably connected with the rotating frame (17), the inner side of the rotating frame (17) is welded with the guide support rod (22), the other end of the guide support rod (22) is welded with the placing seat (5), the upper side of the placing seat (5) is placed with the bolt detection piece (9), the upper side of the placing seat (5) is welded with the surrounding frame (23), the upper side of the surrounding frame (23) is welded with the lamp holder (10), the upper side of the ring plate (11) is installed with the reversing motor (15), the motor shaft of the reversing motor (15) is installed with the driving gear (6), the upper side of the ring plate (11) is close to the rear end position and is connected with the support (12) through the bolt, the front side of the support (12) is connected with the sliding block (13) through the bolt; the front side of the sliding block (13) is installed with the visual camera (14), the left side and the right side of the sliding block (13) are both provided with the convex plate, the front side of the convex plate is provided with the through hole, the through hole of the sliding block (13) is inserted with the clamping bolt (18), the outer side of the clamping bolt (18) is screwed with the clamping nut (19); the outer side of the surrounding frame (23) is provided with six groups of through grooves, the through grooves of the surrounding frame (23) are distributed in annular array around the vertical central axis of the surrounding frame (23); one end of the spring (21) is welded with the clamping rod (20), the other end of the spring (21) is welded with the placing seat (5).

2. The bolt surface thread defect detection device according to claim 1, wherein: The rotating frame (17) is a through cylinder structure, the inner side of the rotating frame (17) is provided with a threaded structure, the outer side of the rotating frame (17) is provided with an external tooth structure, and the driving gear (6) is connected to the external tooth structure of the rotating frame (17).

3. The bolt surface thread defect detection apparatus of claim 1, wherein: The number of the clamping rod (20) is six groups, and the six groups of clamping rods (20) are inserted into the six groups of through grooves of the surrounding frame (23) respectively, each group of clamping rods (20) is an inverted L-shaped structure, the upper side of the clamping rod (20) is provided with an inclined surface structure, the outer side of the clamping rod (20) is provided with a through hole close to the bottom end, and the guide support rod (22) is inserted into the through hole of the clamping rod (20).

4. The bolt surface thread defect detection apparatus of claim 1, wherein: The outer side of the pressure cylinder (8) is provided with a threaded structure, and the outer side of the pressure cylinder (8) is screw-connected to the threaded structure of the inner side of the rotating frame (17) cylinder.

5. The bolt surface thread defect detection apparatus of claim 1, wherein: The number of the lamp holder (10) is two groups, each group of lamp holder (10) is a through circle structure, the inner side of the circle structure of the lamp holder (10) is an inclined surface structure, twenty groups of LED lamp stickers (7) are adhered to the inclined surface of the lamp holder (10), and the LED lamp stickers (7) are arranged in annular array around the vertical central axis of the lamp holder (10).

6. The bolt surface thread defect detection apparatus of claim 1, wherein: The front side of the support (12) is provided with two groups of front and rear through long grooves, the clamping bolt (18) is inserted into the long groove of the support (12), and the convex plate through hole of the sliding block (13) is connected to the long groove of the support (12).

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