An online screw size inspection device

Abstract

This invention relates to the field of screw inspection technology, specifically disclosing an online screw size inspection device. It includes a fixing mechanism arranged in a ring array on top of a turntable for fixing screws, and a detection mechanism housed within the machine body for performing go / no-go gauge inspection on the screws. The fixing mechanism and the detection mechanism cooperate to simultaneously perform go and no-go gauge inspections on the screws. Fixing the screws does not affect the go gauge inspection. This invention presets the distance between the go gauge ring and the no-go gauge tube according to the screw length. After the go gauge ring moves to a specified distance, the no-go gauge ring screws into the side wall of the screw. Depending on whether the go gauge ring needs to be fully screwed into the screw and the no-go gauge ring only needs to be screwed in by one or two pitches, the go and no-go gauge rings rotate simultaneously on the side wall of the screw and move downwards, thus simultaneously performing go and no-go gauge inspections on the screw. Compared to the traditional method of performing go gauge inspection first and then no-go gauge inspection, this improves inspection efficiency.

Description

Technical Field

[0001] This invention relates to the field of screw inspection technology, specifically to an online screw size inspection device. Background Technology

[0002] Screws, as important fasteners, are widely used in various machines and structures. The accuracy and consistency of their dimensions have a direct impact on the performance of the overall system. Screw size inspection is to ensure the quality and performance of screws, thereby ensuring the safety and reliability of products.

[0003] CN118816725B discloses an online screw size inspection system, which aims to automatically detect the screw length, thread condition, nut thickness and stud diameter, avoiding the tedious process of manual inspection, greatly improving inspection efficiency and accuracy, and is suitable for rapid quality control on large-scale production lines.

[0004] Based on existing technologies, the following problems exist:

[0005] Existing screw inspection equipment typically involves first fully screwing the go gauge into the screw's sidewall, then removing it, and subsequently screwing the no-go gauge into the screw's sidewall by one or two pitches. The screw's thread condition is then assessed based on the insertion of the go and no-go gauges to detect any abnormalities in the screw's thread dimensions. However, this go / no-go gauge inspection process is cumbersome and inefficient. Furthermore, screws need to be secured during inspection to prevent loosening. Existing screw inspection equipment typically uses clamping for this purpose. Since screw head thickness varies, clamping is unsuitable for screws with thinner heads due to the small contact area and the need to avoid interfering with the go gauge inspection, leading to unstable fixation. While the aforementioned application facilitates automatic detection of screw length, it suffers from low efficiency and poor inspection results, presenting certain shortcomings. To address these issues, an online screw dimension inspection device is proposed. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the present invention provides an online screw size inspection device, which facilitates simultaneous inspection of screws using go / no-go gauges, improves inspection efficiency, and allows for different fixing methods to be used for screws with different head thicknesses, thereby improving the stability of screw fixing and ensuring smooth inspection.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an online screw size inspection device, comprising a body, a turntable rotatably disposed within the body, and a first robotic arm and a second robotic arm disposed within the body and located outside the turntable. It also includes a fixing mechanism arranged in a circular array on top of the turntable for fixing screws, and a detection mechanism disposed within the body for performing go / no-go gauge inspection on the screws. The fixing mechanism and the detection mechanism cooperate to simultaneously perform go / no-go gauge inspection on the screws, and fixing the screws does not affect the go / go gauge inspection. The detection mechanism includes:

[0008] A long housing, vertically mounted within the machine body, houses a no-go gauge inspection assembly for checking the screw's no-go gauge. A go gauge inspection assembly for checking the screw's go gauge is located at the lower end of the long housing's inner wall. A gap exists between the go and no-go gauge inspection assemblies to allow them to be screwed sequentially to the screw's thread, enabling simultaneous go and no-go gauge checks. The no-go gauge inspection assembly includes:

[0009] The cylinder is housed within a long shell. A stop gauge ring is fixedly installed at the bottom of the cylinder, and a rotating assembly for driving the stop gauge ring to rotate is installed at the top of the cylinder.

[0010] Furthermore, the stop gauge detection component also includes:

[0011] A first adjustment component, disposed on the outer wall of the elongated housing, is used to adjust the position of the stop gauge detection component. The first adjustment component includes:

[0012] The first nut is threaded to the outer wall of the housing, and the outer wall of the housing and the bottom of the first nut are threaded to the second nut. The bottom of the second nut is fixedly provided with a connecting sleeve.

[0013] The connecting ring is slidably disposed on the inner wall of the connecting sleeve. The inner wall of the connecting sleeve has an annular groove, and an annular slider is placed inside the annular groove. The inner wall of the annular slider is fixedly connected to the outer wall of the connecting ring.

[0014] Furthermore, the side wall of the long shell is provided with a ring array of through slots, and the inner wall of each through slot is fitted with a connecting block. A bearing seat is fixedly provided on one side of the connecting block inside the long shell. A first bearing is provided on the inner wall of the bearing seat, and the inner wall of the inner ring of the first bearing is fixedly connected to the outer wall of the stop gauge ring to rotatably connect the stop gauge ring.

[0015] The connecting blocks are all fixedly connected to the inner wall of the connecting ring on the side outside the long shell.

[0016] The first adjustment component further includes:

[0017] The first ring is fixedly sleeved on the outer wall of the long shell. The outer wall of the long shell is sleeved with the second ring. A spring is sleeved on the outer wall of the long shell between the second ring and the first ring to provide elastic support for the first nut.

[0018] Furthermore, the rotating assembly includes:

[0019] A sliding ring is mounted on the inner wall of the long shell. A second bearing is provided on the inner wall of the sliding ring. The inner wall of the inner ring of the second bearing is fixedly connected to the upper end of the outer wall of the cylinder to rotatably connect the cylinder.

[0020] The first torque sensor is fixedly sleeved on the inner wall of the sliding ring and set on the outer wall of the cylinder to monitor the torque of the cylinder rotation.

[0021] A connecting frame is fixedly mounted on the top of the sliding ring. A first servo motor is fixedly mounted on the upper inner wall of the connecting frame. The output shaft of the first servo motor is fixedly connected to the top of the cylinder through a coupling to drive the cylinder and the stop ring to rotate.

[0022] Furthermore, the gauge detection component includes:

[0023] The third bearing is located at the lower end of the inner wall of the long housing. The bottom of the long housing is designed to be open. A go gauge ring is fixedly sleeved on the inner wall of the inner ring of the third bearing to rotatably connect the go gauge ring. The central axes of the go gauge ring and the no-go gauge ring coincide.

[0024] The second torque sensor is installed inside the long housing. The outer wall of the go gauge ring is fixedly fitted with a first gear. The outer walls of the first gear are respectively meshed with a second gear and a third gear. The inner wall of the second gear is fixedly fitted with a first rotating shaft that is rotatably connected to the long housing. The inner wall of the second torque sensor is located on the side wall of the first rotating shaft.

[0025] The second servo motor is fixedly installed inside the long housing. The output shaft of the second servo motor is fixedly connected to the second rotating shaft via a coupling. The side wall of the second rotating shaft is fixedly connected to the inner wall of the third gear.

[0026] Furthermore, a bent mounting bracket is fixedly provided inside the body and on the outside of the turntable. A first electric push rod is fixedly provided on the top of the mounting bracket. The telescopic shaft of the first electric push rod extends to the inside of the mounting bracket and is fixedly connected to the top of the long shell.

[0027] The bottom of the gauge ring is level with the bottom of the long shell, or the bottom of the gauge ring is located at the bottom of the long shell.

[0028] Furthermore, the fixing mechanism includes:

[0029] The base is fixedly mounted on the top of the turntable. A fixed plate is fixedly mounted at the center of the top of the base. A limiting component that matches the opening of the screw head is fixedly mounted at the center of the top of the fixed plate. Limiting components are symmetrically arranged around the center point of the base on the top of the base and on both sides of the fixed plate. A second adjusting component is provided on the side wall of the base for adjusting the position of the limiting components.

[0030] Furthermore, the limiting component includes:

[0031] The base plate is movably mounted on top of the base, and a second electric push rod is hinged to the outer top of the base plate.

[0032] The hinge seat is fixedly installed on the top of the base plate. Hinges are hinged on both sides of the hinge seat. A connecting plate is provided on the side of the hinge that is away from the hinge seat. A third adjustment component is provided between the connecting plate and the hinge. A rubber plate is fixedly installed on the upper inner side of the connecting plate.

[0033] The first slide groove is located on the outside of the connecting plate. The first slider is placed inside the first slide groove. The side wall of the first slider is hinged to the telescopic shaft of the second electric push rod.

[0034] Furthermore, the third adjustment component includes:

[0035] An adjusting seat is fixedly installed on the inner wall of the connecting plate. The inner side of the adjusting seat is provided with second sliding grooves arranged at intervals. Each second sliding groove contains a second slider, which is fixedly connected to the hinge.

[0036] The movable groove is formed inside the adjusting seat and communicates with the second slide. The top and bottom of the second slider are fixedly provided with mounting plates. The sides of the mounting plates that are far apart from each other are fixedly provided with first electromagnets. The top inner wall and bottom inner wall of the movable groove are fixedly provided with second electromagnets.

[0037] Furthermore, the second adjustment component includes:

[0038] The third servo motor is fixedly mounted on the side wall of the base. The base has a groove inside, and sliders are placed inside the groove symmetrically arranged around the center point of the groove. The top of the sliders is fixedly connected to the bottom of the base plate.

[0039] The threaded rod is fixed to the output shaft of the third servo motor via a coupling and extends into the slide groove. The threaded rod is threadedly connected to the slider, and the threaded rod has a bidirectional screw design.

[0040] This invention provides an online screw size detection device. Compared with the prior art, it has the following advantages:

[0041] 1. This invention presets the distance between the go gauge ring and the no-go gauge tube according to the length of the screw. After the go gauge ring moves to a specified distance, the no-go gauge ring is screwed into the side wall of the screw. Depending on whether the go gauge ring needs to be fully screwed into the screw and the no-go gauge ring only needs to be screwed in by one or two pitches, the go gauge ring and the no-go gauge ring rotate simultaneously on the side wall of the screw and move downwards, so as to perform go gauge and no-go gauge tests on the screw simultaneously. Compared with the traditional method of performing go gauge test first and then no-go gauge test, the efficiency of the test is improved.

[0042] 2. The present invention uses a first torque sensor and a second torque sensor to easily measure the torque of the no-go ring and the go ring during rotation, thereby facilitating the judgment of the detection status of the no-go ring and the go ring, so as to make corresponding adjustments according to the detection status, thus facilitating the actual use of the screw for inspection.

[0043] 3. The present invention uses the first adjustment component to move the no-go gauge ring to adjust the distance between the no-go gauge ring and the go gauge ring, thereby facilitating adjustment according to the length of the screw, so as to facilitate the inspection of screws of different sizes, without affecting the actual inspection and use of the no-go gauge ring.

[0044] 4. This invention uses a hinged fixing mechanism, allowing the connecting plate and rubber plate to be in an inclined or vertical state respectively. This allows for selection of the fixing screw method based on the thickness of the screw head, ensuring the stability of the fixing while being applicable to different types of screws.

[0045] 5. This invention initially limits the screw by setting a limiting member that matches the opening of the screw head, limits the screw according to its own structural characteristics, improves the stability of the limiting, and further fixes it with the limiting component to ensure the stability of the screw fixation without affecting the gauge inspection of the screw.

[0046] 6. The present invention adjusts the position of the connecting plate and the rubber plate through the third adjustment component to avoid the connecting plate and the rubber plate being located above the screw head, thereby avoiding affecting the go gauge inspection and facilitating the clamping and fixing of screws with different head thicknesses.

[0047] The position of the limiting components on both sides of the fixing plate can be adjusted by the second adjustment component, which makes it easy to adjust according to the size of the screw and to make the rubber plates close to each other to clamp the head of the screw, thereby making it easier to fix the screw. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0049] Figure 2 This is a schematic diagram of the structure of the first and second robotic arms of the present invention;

[0050] Figure 3This is a schematic diagram of the detection mechanism structure of the present invention;

[0051] Figure 4 This is a schematic cross-sectional view of the long shell structure of the present invention;

[0052] Figure 5 This is a schematic cross-sectional view of the long shell and sliding ring of the present invention;

[0053] Figure 6 This is a schematic diagram of the structure of the first adjustment component of the present invention;

[0054] Figure 7 This is a schematic diagram of the internal structure of the long shell of the present invention;

[0055] Figure 8 This is a schematic diagram of the rotating component structure of the present invention;

[0056] Figure 9 This is a schematic cross-sectional view of the sliding ring structure of the present invention;

[0057] Figure 10 For the present invention Figure 7 A magnified structural diagram of A in the middle;

[0058] Figure 11 This is a schematic diagram of the go gauge ring, the second torque sensor, and the third bearing structure of the present invention;

[0059] Figure 12 This is a schematic diagram of the fixing mechanism structure of the present invention;

[0060] Figure 13 This is a schematic diagram of the fixing disc and limiting component structure of the present invention;

[0061] Figure 14 This is a schematic diagram of the limiting component and the second adjusting component of the present invention;

[0062] Figure 15 This is a schematic diagram of the limiting component structure of the present invention;

[0063] Figure 16 This is a schematic diagram of the third adjustment component structure of the present invention;

[0064] Figure 17 This is a schematic diagram of the connecting plate deflection structure of the present invention.

[0065] The reference numerals in the above figures are as follows: 1. Body; 2. First robotic arm; 3. Turntable; 4. Fixing mechanism; 5. Detection mechanism; 6. Second robotic arm;

[0066] 41. Fixed plate; 42. Base; 43. Second adjustment component; 44. Limiting component; 45. Limiting element;

[0067] 431. Third servo motor; 432. Threaded rod;

[0068] 441. Rubber sheet; 442. First slide groove; 443. Connecting plate; 444. Base plate; 445. Second electric push rod; 446. Third adjusting assembly; 447. Hinge; 448. Hinge seat;

[0069] 4461. Adjusting seat; 4462. First electromagnet; 4463. Second electromagnet; 4464. Moving groove; 4465. Second slide rail;

[0070] 51. First electric actuator; 52. Long housing; 53. No-go gauge inspection assembly; 54. Go gauge inspection assembly;

[0071] 531. Cylinder body; 532. First adjusting assembly; 533. Rotating assembly; 534. Bearing housing; 535. First bearing; 536. No-go ring;

[0072] 5321. First ring body; 5322. Second ring body; 5323. First nut; 5324. Second nut; 5325. Connecting sleeve; 5326. Connecting ring;

[0073] 5331, Sliding ring; 5332, Second bearing; 5333, First torque sensor; 5334, Connecting frame; 5335, First servo motor;

[0074] 541. Third bearing; 542. Second servo motor; 543. Flow gauge ring; 544. Second torque sensor. Detailed Implementation

[0075] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0076] Example 1: Please refer to Figure 1 and Figure 2 An online screw size inspection device includes a body 1, a turntable 3 rotatably disposed within the body 1, and a first robotic arm 2 and a second robotic arm 6 disposed within the body 1 and located outside the turntable 3. The turntable 3 is an electric turntable 3, which drives a fixing mechanism 4 to rotate, thereby adjusting the position of the screw. The device also includes a fixing mechanism 4 arranged in a circular array on top of the turntable 3 for fixing the screw, and a detection mechanism 5 disposed within the body 1 for performing go / no-go gauge inspection on the screw. The fixing mechanism 4 and the detection mechanism 5 cooperate to simultaneously perform go / no-go gauge inspection on the screw, and fixing the screw does not affect the go / go gauge inspection.

[0077] Please see Figure 3 and Figure 4 The testing institutions 5 include:

[0078] A long housing 52 is vertically mounted inside the machine body 1. Inside the long housing 52 is a no-go gauge inspection component 53 for inspecting the screw's no-go gauge. At the lower end of the inner wall of the long housing 52 is a go gauge inspection component 54 for inspecting the screw's go gauge. A gap is left between the go gauge inspection component 54 and the no-go gauge inspection component 53 so that they can be screwed sequentially to the screw's thread, allowing for simultaneous go and no-go gauge inspections. The no-go gauge inspection component 53 includes:

[0079] The cylindrical body 531 is disposed inside the long shell 52. A stop ring 536 is fixedly provided at the bottom of the cylindrical body 531, and a rotating assembly 533 for driving the stop ring 536 to rotate is provided at the top of the cylindrical body 531.

[0080] Please see Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 The goroutine inspection component 54 includes:

[0081] The third bearing 541 is located at the lower end of the inner wall of the long housing 52. The bottom of the long housing 52 is designed to be open. The inner wall of the inner ring of the third bearing 541 is fixedly fitted with a go gauge ring 543 to rotatably connect the go gauge ring 543. The central axes of the go gauge ring 543 and the no-go gauge ring 536 coincide.

[0082] The second torque sensor 544 is disposed inside the long housing 52. The outer wall of the go gauge ring 543 is fixedly sleeved with a first gear. The outer sides of the first gear are respectively meshed with a second gear and a third gear. The inner wall of the second gear is fixedly sleeved with a first rotating shaft that is rotatably connected to the long housing 52. The inner wall of the second torque sensor 544 is disposed on the side wall of the first rotating shaft.

[0083] The second servo motor 542 is fixedly installed inside the long housing 52. The output shaft of the second servo motor 542 is fixedly connected to the second rotating shaft through a coupling. The side wall of the second rotating shaft is fixedly connected to the inner wall of the third gear.

[0084] Inside the body 1 and on the outside of the turntable 3, a mounting bracket with a bent design is fixedly provided. A first electric push rod 51 is fixedly provided on the top of the mounting bracket. The telescopic shaft of the first electric push rod 51 extends to the inside of the mounting bracket and is fixedly connected to the top of the long shell 52.

[0085] In practical implementation, the first electric push rod 51 drives the long housing 52 to move downwards until the go gauge ring 543 is located at the top of the screw. Then, the second servo motor 542 drives the go gauge ring 543 to rotate. At the same time, the first electric push rod 51 gradually moves downwards, so that the go gauge ring 543 rotates along the side wall of the screw and moves downwards to perform go gauge testing on the screw. When the go gauge ring 543 moves down a specified distance, the no-go gauge ring 536 is located at the top of the screw. That is, the rotating component 533 drives the no-go gauge ring 536 to rotate, thereby performing no-go gauge testing on the screw. After the go gauge ring 543 moves to the specified distance, the no-go gauge ring 536 is screwed into the side wall of the screw to perform go gauge and no-go gauge testing on the screw simultaneously, thereby improving the testing efficiency.

[0086] The distance between the go gauge ring 543 and the no-go gauge tube is preset according to the length of the screw. After the go gauge ring 543 moves to the specified distance, the no-go gauge ring 536 is screwed into the side wall of the screw. Depending on whether the go gauge ring 543 needs to be fully screwed into the screw and the no-go gauge ring 536 only needs to be screwed in by one or two pitches, the go gauge ring 543 and the no-go gauge ring 536 are rotated simultaneously on the side wall of the screw and moved downwards to perform go gauge and no-go gauge checks on the screw at the same time. Compared with the traditional method of performing go gauge checks first and then no-go gauge checks, the efficiency of the inspection is improved.

[0087] The first torque sensor 5333 and the second torque sensor 544 facilitate the monitoring of the torque of the no-go ring 536 and the go ring 543 during rotation, thereby enabling the assessment of their detection status. When the values ​​monitored by the first torque sensor 5333 and the second torque sensor 544 are normal, the first electric push rod 51, the first servo motor 5335, and the second servo motor 542 work together to rotate the no-go ring 536 and the go ring 543 while moving downwards for go / no-go testing. When the values ​​monitored by the first torque sensor 5333 and the second torque sensor 544 are abnormal, it indicates a quality problem with the screw. In this case, the no-go ring 536 and the go ring 543 reverse direction, and the first electric push rod 51 moves the long housing 52 upwards, causing the no-go ring 536 and the go ring 543 to disengage from the screw, facilitating the testing of the next screw. The screw with the detected quality problem is placed in a designated position by the first robotic arm 2 for subsequent processing.

[0088] Please see Figure 4 and Figure 6 The stop gauge inspection component 53 also includes:

[0089] A first adjustment component 532 is disposed on the outer wall of the elongated housing 52 for adjusting the position of the stop gauge detection component 53. The first adjustment component 532 includes:

[0090] The first nut 5323 is threaded to the outer wall of the housing, and the outer wall of the housing and the bottom of the first nut 5323 are threaded to the second nut 5324. The bottom of the second nut 5324 is fixedly provided with a connecting sleeve 5325.

[0091] The connecting ring 5326 is slidably disposed on the inner wall of the connecting sleeve 5325. The inner wall of the connecting sleeve 5325 is provided with an annular groove, and an annular slider is placed inside the annular groove. The inner wall of the annular slider is fixedly connected to the outer wall of the connecting ring 5326.

[0092] The side wall of the long shell 52 is provided with a ring array of through slots. The inner wall of each through slot is fitted with a connecting block. A bearing seat 534 is fixedly provided on one side of the connecting block inside the long shell 52. A first bearing 535 is provided on the inner wall of the bearing seat 534. The inner wall of the inner ring of the first bearing 535 is fixedly connected to the outer wall of the stop gauge ring 536 so as to rotatably connect the stop gauge ring 536.

[0093] The connecting blocks are all fixedly connected to the inner wall of the connecting ring 5326 on the side outside the long shell 52;

[0094] The first adjustment component 532 also includes:

[0095] The first ring 5321 is fixedly sleeved on the outer wall of the long shell 52. The outer wall of the long shell 52 is sleeved with the second ring 5322. A spring is sleeved on the outer wall of the long shell 52 between the second ring 5322 and the first ring 5321 to provide elastic support for the first nut 5323.

[0096] In practical implementation, by rotating the first nut 5323 and the second nut 5324, the connecting sleeve 5325 is driven to rotate and move on the outer wall of the long housing 52, thereby driving the connecting ring 5326 to move. The connecting ring 5326 drives the bearing seat 534 and the no-go ring 536 to move through the connecting block, so as to adjust the distance between the no-go ring 536 and the go ring 543, thereby facilitating adjustment according to the length of the screw and improving applicability.

[0097] By setting the bearing seat 534 and the first bearing 535, it is easy to adjust the position of the stop ring 536 without affecting the rotation of the stop ring 536. By setting the annular groove and the annular slider, while the connecting sleeve 5325 rotates and moves downward, the connecting ring 5326 only moves under the limit of the through groove and the connecting block, thus making it easy to adjust the height position of the stop ring 536.

[0098] By setting the first nut 5323 and the second nut 5324, the stability of the stop ring 536 after the height position is adjusted is improved. Furthermore, the first nut 5323 is elastically supported by a spring, so that the thread on the inner wall of the first nut 5323 abuts against the thread on the outer wall of the long shell 52, thereby further improving stability.

[0099] Please see Figure 8 and Figure 9 The rotating assembly 533 includes:

[0100] The sliding ring 5331 is vertically mounted on the inner wall of the long shell 52. The inner wall of the sliding ring 5331 is provided with a second bearing 5332. The inner wall of the inner ring of the second bearing 5332 is fixedly connected to the upper end of the outer wall of the cylinder 531 so as to rotatably connect the cylinder 531.

[0101] The first torque sensor 5333 is fixedly sleeved on the inner wall of the sliding ring 5331 and set on the outer wall of the cylinder 531 to monitor the torque of the cylinder 531 rotation.

[0102] The connecting frame 5334 is fixedly mounted on the top of the sliding ring 5331. The upper end of the inner wall of the connecting frame 5334 is fixedly mounted with a first servo motor 5335. The output shaft of the first servo motor 5335 is fixedly connected to the top of the cylinder 531 through a coupling to drive the cylinder 531 and the stop ring 536 to rotate.

[0103] In specific implementation, the first servo motor 5335 is started. The first servo motor 5335 drives the cylinder 531 to rotate through the coupling, thereby driving the stop gauge ring 536 to rotate, so that the stop gauge ring 536 rotates on the side wall of the screw, thereby performing stop gauge detection.

[0104] By setting a sliding ring 5331, and making the sliding ring 5331 able to rise and fall along the axial direction of the long housing 52, the sliding ring 5331 is moved up and down in conjunction with the first adjusting component 532 when adjusting the height of the stop ring 536, thus facilitating synchronous adjustment without affecting the fixed first servo motor 5335. In addition, it does not affect the first servo motor 5335 from driving the stop ring 536 to rotate.

[0105] The bottom of the go gauge ring 543 is level with the bottom of the long housing 52, or the bottom of the go gauge ring 543 is located at the bottom of the long housing 52, so that the go gauge ring 543 can be screwed into the side wall of the screw, thereby facilitating the use of go gauge inspection.

[0106] Example 2, please refer to Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 and Figure 17 The difference between this embodiment and Embodiment 1 lies in the fact that the fixing mechanism 4 includes:

[0107] The base 42 is fixedly mounted on the top of the turntable 3. A fixed plate 41 is fixedly mounted at the top center of the base 42. A limiting member 45 that matches the opening of the screw head is fixedly mounted at the top center of the fixed plate 41. Limiting components 44 are symmetrically arranged around the center point of the base 42 on the top of the base 42 and on both sides of the fixed plate 41. A second adjusting component 43 for adjusting the position of the limiting components 44 is provided on the side wall of the base 42.

[0108] Limiting component 44 includes:

[0109] The base plate 444 is movably mounted on the top of the base 42, and a second electric push rod 445 is hinged to the outer top of the base plate 444.

[0110] A hinge seat 448 is fixedly mounted on the top of a base plate 444. Hinges 447 are hinged on both sides of the hinge seat 448. A connecting plate 443 is provided on the side of the hinge 447 away from the hinge seat 448. A third adjustment component 446 is provided between the connecting plate 443 and the hinge 447. A rubber plate 441 is fixedly mounted on the upper inner side of the connecting plate 443.

[0111] The first slide groove 442 is opened on the outside of the connecting plate 443. The first slider is placed inside the first slide groove 442. The side wall of the first slider is hinged to the telescopic shaft of the second electric push rod 445.

[0112] The third adjustment component 446 includes:

[0113] Adjustment seat 4461 is fixedly disposed on the inner wall of connecting plate 443. The inner side of adjustment seat 4461 is provided with second sliding grooves 4465 arranged at intervals. Second sliders are placed inside the second sliding grooves 4465. The second sliders are fixedly connected to the hinge 447.

[0114] The movable groove 4464 is opened in the adjusting seat 4461 and communicates with the second slide 4465. The top and bottom of the second slider are fixedly provided with mounting plates. The first electromagnet 4462 is fixedly provided on the side of the mounting plates that are far apart from each other. The top inner wall and bottom inner wall of the movable groove 4464 are fixedly provided with second electromagnets 4463.

[0115] The second adjustment component 43 includes:

[0116] The third servo motor 431 is fixedly mounted on the side wall of the base 42. The base 42 has a groove inside, and sliders are placed inside the groove symmetrically arranged around the center point of the groove. The top of the sliders is fixedly connected to the bottom of the base plate 444.

[0117] The threaded rod 432 is fixed to the output shaft of the third servo motor 431 via a coupling and extends into the slide groove. The threaded rod 432 is threadedly connected to the slider and has a bidirectional screw design.

[0118] In practical implementation, when it is necessary to fix a screw with a small head thickness, the second robotic arm 6 places the opening of the screw head on the side wall of the matching limiting member 45 to initially limit the screw. Then, the second electric push rod 445 is activated. The telescopic shaft of the second electric push rod 445 drives the connecting plate 443 and the hinge member 447 to rotate along the hinge of the hinge seat 448, so that the rubber plate 441 presses down on the screw head to fix the screw. This avoids the problem of unstable clamping that would affect the detection due to the small height of the screw head when using traditional clamping methods.

[0119] When it is necessary to fix a screw with a relatively large head thickness, the second robotic arm 6 places the opening of the screw head on the side wall of the matching limiting member 45 to initially limit the screw. Then, the second electric push rod 445 drives the connecting plate 443 to rotate, so that the connecting plate 443 is arranged vertically, thereby fixing the screw head from the side with the rubber plate 441, thus fixing the screw for subsequent testing.

[0120] By using a hinge, the connecting plate 443 and the rubber plate 441 can be in an inclined or vertical state, respectively, so as to select the method of fixing the screw according to the thickness of the screw head, ensuring the stability of the fixation while being suitable for different types of screws.

[0121] The screw is initially limited by a limiting member 45 that matches the opening of the screw head. The limiting is based on the structural characteristics of the screw itself, which improves the stability of the limiting. The limiting member 45 is used to fix the screw again, ensuring the stability of the screw fixation and not affecting the gauge inspection of the screw.

[0122] Screws with small head thickness are fixed by rotating the rubber plate 441 downward to press the screw head, and with the matching limiting member 45, the stability of screw fixing is improved compared with the traditional clamping method. In actual design, the position of the rubber plate 441 and the connecting plate 443 pressing the screw head is adjusted to avoid affecting the gauge inspection.

[0123] By using the first electromagnet 4462 and the second electromagnet 4463 of the third adjustment component 446, a repulsive force is generated on the side of the first electromagnet 4462 and the second electromagnet 4463 that are close to each other, thereby adjusting the support position of the second slider, and adjusting the position of the connecting plate 443 and the rubber plate 441. This prevents the connecting plate 443 and the rubber plate 441 from being located above the screw head when fixing screws with a large head thickness, thus avoiding affecting the go gauge inspection and facilitating the clamping and fixing of screws with different head thicknesses.

[0124] The third servo motor 431 drives the sliders to move closer or further apart along the slide groove, thereby adjusting the position of the limiting components 44 on both sides of the fixed plate 41. This facilitates adjustment according to the size of the screw and makes it easier for the rubber plates 441 to move closer together to hold the head of the screw, thus facilitating the fixing of the screw.

[0125] When the second robotic arm 6 places the screw on the limiting member 45, it can use an external vision device, such as a vision camera, to determine the position of the screw head opening and adjust it through the rotating part at the end of the second robotic arm 6 so that the screw head opening is stably fitted onto the side wall of the limiting member 45. This is existing technology and will not be described in detail here.

[0126] In practice, the second robotic arm 6 places the screw to be inspected on the turntable 3 and fixes it with the fixing mechanism 4. Then, the turntable 3 rotates, causing the fixing mechanism 4 with the screw to move to the bottom of the inspection mechanism 5 for go / no-go gauge inspection. After the inspection is completed, the turntable 3 rotates again, and the screws with screws but not yet inspected are moved to the bottom of the inspection mechanism 5. The inspected screws are taken out by the first robotic arm 2. This cycle is repeated for inspection.

[0127] In this invention, the first servo motor 5335 and the first electric push rod 51, and other electronic devices, are connected to an external power supply and controller via wires for practical control and use. This is prior art and will not be described in detail here.

[0128] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0129] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0130] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online screw size inspection device, comprising a body, a turntable rotatably disposed within the body, and a first robotic arm and a second robotic arm disposed within the body and located outside the turntable, characterized in that, It also includes a fixing mechanism arranged in a ring array on top of the turntable for fixing screws, and a detection mechanism located inside the machine body for checking the screws for go and no-go gauges. The fixing mechanism and the detection mechanism work together to simultaneously check the screws for go and no-go gauges, and fixing the screws does not affect the go gauge check. The detection mechanism includes: A long housing, vertically mounted within the machine body, houses a no-go gauge inspection assembly for checking the screw's no-go gauge. A go gauge inspection assembly for checking the screw's go gauge is located at the lower end of the long housing's inner wall. A gap exists between the go and no-go gauge inspection assemblies to allow them to be screwed sequentially to the screw's thread, enabling simultaneous go and no-go gauge checks. The no-go gauge inspection assembly includes: The cylinder is housed within a long shell. A stop gauge ring is fixedly installed at the bottom of the cylinder, and a rotating assembly for driving the stop gauge ring to rotate is installed at the top of the cylinder. The stop gauge detection component also includes: A first adjustment component, disposed on the outer wall of the elongated housing, is used to adjust the position of the stop gauge detection component. The first adjustment component includes: The first nut is threaded to the outer wall of the housing, and the outer wall of the housing and the bottom of the first nut are threaded to the second nut. The bottom of the second nut is fixedly provided with a connecting sleeve. A connecting ring is slidably disposed on the inner wall of a connecting sleeve. An annular groove is provided on the inner wall of the connecting sleeve, and an annular slider is placed inside the annular groove. The inner wall of the annular slider is fixedly connected to the outer wall of the connecting ring. The side wall of the long shell is provided with a ring array of through slots. The inner wall of each through slot is fitted with a connecting block. A bearing seat is fixedly provided on one side of the connecting block inside the long shell. A first bearing is provided on the inner wall of the bearing seat. The inner wall of the inner ring of the first bearing is fixedly connected to the outer wall of the stop gauge ring so as to rotatably connect the stop gauge ring. The connecting blocks are all fixedly connected to the inner wall of the connecting ring on the side outside the long shell. The first adjustment component further includes: The first ring is fixedly sleeved on the outer wall of the long shell. The outer wall of the long shell is sleeved with the second ring. A spring is sleeved on the outer wall of the long shell between the second ring and the first ring to provide elastic support for the first nut.

2. The online screw size detection device according to claim 1, characterized in that, The rotating assembly includes: A sliding ring is mounted on the inner wall of the long shell. A second bearing is provided on the inner wall of the sliding ring. The inner wall of the inner ring of the second bearing is fixedly connected to the upper end of the outer wall of the cylinder to rotatably connect the cylinder. The first torque sensor is fixedly sleeved on the inner wall of the sliding ring and set on the outer wall of the cylinder to monitor the torque of the cylinder rotation. A connecting frame is fixedly mounted on the top of the sliding ring. A first servo motor is fixedly mounted on the upper inner wall of the connecting frame. The output shaft of the first servo motor is fixedly connected to the top of the cylinder through a coupling to drive the cylinder and the stop ring to rotate.

3. The online screw size detection device according to claim 1, characterized in that, The gauge detection component includes: The third bearing is located at the lower end of the inner wall of the long housing. The bottom of the long housing is designed to be open. A go gauge ring is fixedly sleeved on the inner wall of the inner ring of the third bearing to rotatably connect the go gauge ring. The central axes of the go gauge ring and the no-go gauge ring coincide. The second torque sensor is installed inside the long housing. The outer wall of the go gauge ring is fixedly fitted with a first gear. The outer walls of the first gear are respectively meshed with a second gear and a third gear. The inner wall of the second gear is fixedly fitted with a first rotating shaft that is rotatably connected to the long housing. The inner wall of the second torque sensor is located on the side wall of the first rotating shaft. The second servo motor is fixedly installed inside the long housing. The output shaft of the second servo motor is fixedly connected to the second rotating shaft via a coupling. The side wall of the second rotating shaft is fixedly connected to the inner wall of the third gear.

4. The online screw size detection device according to claim 3, characterized in that, The machine body is fixedly provided with a bent mounting bracket inside and outside the turntable. A first electric push rod is fixedly provided on the top of the mounting bracket. The telescopic shaft of the first electric push rod extends to the inside of the mounting bracket and is fixedly connected to the top of the long shell. The bottom of the gauge ring is level with the bottom of the long shell, or the bottom of the gauge ring is located at the bottom of the long shell.

5. The online screw size detection device according to claim 4, characterized in that, The fixing mechanism includes: The base is fixedly mounted on the top of the turntable. A fixed plate is fixedly mounted at the center of the top of the base. A limiting component that matches the opening of the screw head is fixedly mounted at the center of the top of the fixed plate. Limiting components are symmetrically arranged around the center point of the base on the top of the base and on both sides of the fixed plate. A second adjusting component is provided on the side wall of the base for adjusting the position of the limiting components.

6. The online screw size detection device according to claim 5, characterized in that, The limiting component includes: The base plate is movably mounted on top of the base, and a second electric push rod is hinged to the outer top of the base plate. The hinge seat is fixedly installed on the top of the base plate. Hinges are hinged on both sides of the hinge seat. A connecting plate is provided on the side of the hinge that is away from the hinge seat. A third adjustment component is provided between the connecting plate and the hinge. A rubber plate is fixedly installed on the upper inner side of the connecting plate. The first slide groove is located on the outside of the connecting plate. The first slider is placed inside the first slide groove. The side wall of the first slider is hinged to the telescopic shaft of the second electric push rod.

7. The online screw size detection device according to claim 6, characterized in that, The third adjustment component includes: An adjusting seat is fixedly installed on the inner wall of the connecting plate. The inner side of the adjusting seat is provided with second sliding grooves arranged at intervals. Each second sliding groove contains a second slider, which is fixedly connected to the hinge. The movable groove is formed inside the adjusting seat and communicates with the second slide. The top and bottom of the second slider are fixedly provided with mounting plates. The sides of the mounting plates that are far apart from each other are fixedly provided with first electromagnets. The top inner wall and bottom inner wall of the movable groove are fixedly provided with second electromagnets.

8. The online screw size detection device according to claim 7, characterized in that, The second adjustment component includes: The third servo motor is fixedly mounted on the side wall of the base. The base has a groove inside, and sliders are placed inside the groove symmetrically arranged around the center point of the groove. The top of the sliders is fixedly connected to the bottom of the base plate. The threaded rod is fixed to the output shaft of the third servo motor via a coupling and extends into the slide groove. The threaded rod is threadedly connected to the slider, and the threaded rod has a bidirectional screw design.

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