Screw size laser on-line detection equipment

Abstract

The invention relates to the technical field of screw detection, and particularly discloses a screw size laser online detection device, which comprises a fixing mechanism which is arranged at the top of a turntable in an annular array and is used for fixing a screw and a detection mechanism which is arranged in a machine body and is used for carrying out go-no go gauge detection on the screw, and the fixing mechanism is matched with the detection mechanism. According to the invention, the distance between the go gauge ring and the no-go gauge tube is preset according to the length of the screw, so that the no-go gauge ring is screwed into the side wall of the screw after the go gauge ring is moved to a specified distance, and the screw can be synchronously detected. According to the condition that the go gauge ring needs to be completely screwed into the screw and the no-go gauge ring only needs to be screwed into one or two screw pitches, the go gauge ring and the no-go gauge ring rotate on the side wall of the screw at the same time and move downwards so as to synchronously carry out go gauge detection and no-go gauge detection on the screw, and compared with a traditional method that go gauge detection is carried out firstly and then no-go gauge detection is carried out, the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of screw detection, and in particular to a laser online detection device for screw size. Background Art

[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 entire system. Screw dimension testing is to ensure the quality and performance of the screws, thereby ensuring the safety and reliability of the product.

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

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

[0005] When the existing screw detection equipment performs go / no-go gauge detection on the screw, it is usually the case that the go gauge is first completely screwed into the side wall of the screw, and then the go gauge is removed. Then, the no-go gauge is screwed into the side wall of the screw by one or two pitches. The thread condition of the screw is judged according to the screwing condition of the go gauge and the no-go gauge to detect whether the thread size of the screw is abnormal. However, the above-mentioned go / no-go gauge detection operation is cumbersome and reduces the detection efficiency. When the screw is detected, the screw needs to be fixed to prevent the screw from loosening during the detection process. When the existing screw detection equipment fixes the screw, it is usually fixed by clamping. Since the head thickness of the screw is different, when the clamping method is used to fix the screw with a smaller head thickness, it is not convenient to fix the screw with a smaller head thickness or the fixation may be unstable due to the small contact surface and the inability to affect the go gauge detection. Referring to the above-mentioned application documents, it is indeed convenient to automatically detect the length of the screw, but the detection efficiency is low and the detection effect is not good. There are certain shortcomings. In order to solve the above-mentioned problems, a laser online detection device for screw size is proposed. Summary of the Invention

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a laser online detection device for screw size, which is convenient for synchronous go / no-go gauge detection of screws, improves detection efficiency, and facilitates different fixing methods for screws with different head thicknesses, thereby improving the stability of screw fixation and ensuring smooth detection.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a laser online detection device for screw size, comprising a body, a turntable rotatably arranged in the body, and a first robotic arm and a second robotic arm arranged in the body and located outside the turntable, further comprising a fixing mechanism arranged in a circular array on top of the turntable and used to fix the screws, and a detection mechanism arranged in the body for performing go / no-go gauge detection on the screws. The fixing mechanism and the detection mechanism cooperate to simultaneously perform go / no-go gauge detection on the screws, and fixing the screws does not affect the go / no-go gauge detection. The detection mechanism comprises:

[0008] The long shell is arranged in a lifting manner within the machine body. A no-go gauge detection component for detecting no-go gauges on screws is provided inside the long shell. A go gauge detection component for detecting through-gauges on screws is provided at the lower end of the inner wall of the long shell. A spacing is left between the go gauge detection component and the no-go gauge detection component so that the go gauge detection component and the no-go gauge detection component can be rotated to the screw thread in sequence to simultaneously perform go gauge detection and no-go gauge detection on the screw. The no-go gauge detection component includes:

[0009] The cylinder is arranged in the long shell body, a stop gauge ring is fixedly provided at the bottom of the cylinder, and a rotating assembly for driving the stop gauge ring to rotate is provided at the top of the cylinder.

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

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

[0012] A first nut is threadedly connected to the outer wall of the housing, a second nut is threadedly connected to the outer wall of the housing and located at the bottom of the first nut, and a connecting sleeve is fixedly provided at the bottom of the second nut;

[0013] The connecting ring is slidably arranged on the inner wall of the connecting sleeve. The inner wall of the connecting sleeve is provided with an annular sliding groove. An annular slider is placed inside the annular sliding 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 through grooves arranged in a circular array, the inner walls of the through grooves are sleeved with connecting blocks, a bearing seat is fixedly provided on one side of the connecting block located 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] One side of the connecting block located outside the long shell is fixedly connected to the inner wall of the connecting ring;

[0016] The first adjustment component also includes:

[0017] The first ring body is fixedly sleeved on the outer wall of the long shell, the outer wall of the long shell is sleeved with the second ring body, and the outer wall of the long shell and between the second ring body and the first ring body are sleeved with a spring to elastically support the first nut.

[0018] Furthermore, the rotating assembly includes:

[0019] A sliding ring is provided on the inner wall of the long shell in a lifting manner. 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 rotate and connect the cylinder;

[0020] A first torque sensor is fixedly mounted on the inner wall of the sliding ring and is arranged on the outer wall of the cylinder to monitor the torque of the cylinder rotation;

[0021] The connecting frame is fixed on the top of the sliding ring. The upper end of the inner wall of the connecting frame is fixed with a first servo motor. 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 gauge ring to rotate.

[0022] Furthermore, the through gauge detection component includes:

[0023] The third bearing is arranged 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 stop-gauge ring coincide with each other.

[0024] The second torque sensor is disposed in the long housing. The outer wall of the gauge ring is fixed with a first gear. The outer wall of the first gear is meshed with a second gear and a third gear on both sides. The inner wall of the second gear is fixed with a first shaft rotatably connected to the long housing. The inner wall of the second torque sensor is disposed on a side wall of the first shaft.

[0025] The second servo motor is fixed in the long housing. The output shaft of the second servo motor is fixed with 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.

[0026] Furthermore, a mounting frame with a bent design is fixedly provided inside the body and outside the turntable, a first electric push rod is fixedly provided on the top of the mounting frame, and a telescopic shaft of the first electric push rod extends to the inside of the mounting frame and is fixedly connected to the top of the long housing;

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

[0028] Furthermore, the fixing mechanism includes:

[0029] The base is fixed on the top of the turntable, a fixed disk is fixed at the top center of the base, a limit piece adapted to the opening of the screw head is fixed at the top center of the fixed disk, and limit components symmetrically arranged with the center point of the base are provided on the top of the base and on both sides of the fixed disk, and a second adjustment component for adjusting the position of the limit component is provided on the side wall of the base.

[0030] Furthermore, the limiting component includes:

[0031] A bottom plate is movably arranged on the top of the base, and a second electric push rod is hingedly connected to the outer side of the top of the bottom plate;

[0032] The hinge seat is fixed on the top of the bottom plate, and hinges are hinged on both sides of the hinge seat. A connecting plate is provided on the side of the hinge away from the hinge seat, and a third adjustment component is provided between the connecting plate and the hinge. A rubber plate is fixed on the inner upper end of the connecting plate;

[0033] The first sliding groove is arranged on the outer side of the connecting plate. The first sliding block is placed inside the first sliding groove. The side wall of the first sliding block is hinged to the telescopic shaft of the second electric push rod.

[0034] Furthermore, the third adjustment component includes:

[0035] The adjustment seat is fixed on the inner wall of the connecting plate, and the inner side of the adjustment seat is provided with second sliding grooves arranged at intervals. The second sliding blocks are placed inside the second sliding grooves, and the second sliding blocks are fixedly connected to the hinge;

[0036] The movable groove is opened in the adjustment seat and is connected to the second slide groove. The top and bottom of the second slider are fixed with mounting plates, and the sides of the mounting plates away from each other are fixed with first electromagnets. The top inner wall and bottom inner wall of the movable groove are fixed 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. A slide groove is formed inside the base. Slide blocks are placed inside the slide groove and are symmetrically arranged about the center point of the slide groove. The top of the slide block 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 through a coupling and extends into the slide groove. The threaded rod is threadedly connected to the slider and has a bidirectional screw design.

[0040] The present invention provides a laser online screw size detection device. Compared with the existing technology, it has the following advantages:

[0041] 1. The present invention presets the distance between the go gauge ring and the stop gauge tube according to the length of the screw, so that after the go gauge ring moves to the specified distance, the stop gauge ring is screwed into the side wall of the screw. According to the situation that the go gauge ring needs to be fully screwed into the screw and the stop gauge ring only needs to be screwed in one or two pitches, the go gauge ring and the stop gauge ring are rotated on the side wall of the screw at the same time and move downward to synchronously perform go gauge detection and stop gauge detection on the screw. Compared with the traditional method of first performing go gauge detection and then performing stop gauge detection, the detection efficiency is improved.

[0042] 2. The present invention facilitates grasping the torque of the stop gauge ring and the go gauge ring during the rotation process through the first torque sensor and the second torque sensor, thereby facilitating the judgment of the detection status of the stop gauge ring and the go gauge ring, so as to make corresponding adjustments according to the detection status, thereby facilitating the actual detection of screw use.

[0043] 3. The present invention drives the stop gauge ring to move through the first adjustment component to adjust the distance between the stop gauge ring and the through gauge ring, thereby facilitating adjustment according to the length of the screw, so as to facilitate the detection of screws of different sizes without affecting the actual detection and use of the stop gauge ring.

[0044] 4. The present invention adopts a hinged fixing mechanism to make the connecting plate and the rubber plate respectively in an inclined or vertical state, so that the method of fixing the screws can be selected according to the thickness of the screw head, ensuring the stability of the fixation while being applicable to different types of screws.

[0045] 5. The present invention performs preliminary positioning of the screw by setting a limiting piece that is compatible with the opening of the screw head, limits the screw according to the structural characteristics of the screw itself, improves the stability of the positioning, and cooperates with the limiting component to fix the screw again, thereby ensuring the stability of the screw fixation without affecting the through-gauge detection 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 prevent the connecting plate and the rubber plate from being located above the screw head, thereby avoiding affecting the detection of the go gauge and facilitating the clamping and fixing of screws with different head thicknesses;

[0047] The positions of the limiting components on both sides of the fixing plate are adjusted by the second adjusting component, so as to facilitate adjustment according to the size of the screw and make the rubber plates close to the heads of the clamping screws, thereby facilitating fixing the screws. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0050] Figure 3It is a structural schematic diagram of the detection mechanism 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 housing and the sliding ring of the present invention;

[0053] Figure 6 This is a schematic structural diagram 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 It is a schematic structural diagram of the rotating assembly of the present invention;

[0056] Figure 9 This is a schematic cross-sectional structural diagram of a sliding ring according to the present invention;

[0057] Figure 10 For the present invention Figure 7 Schematic diagram of the enlarged structure of A;

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

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

[0060] Figure 13 It is a schematic diagram of the structure of the fixing plate and the limiting member of the present invention;

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

[0062] Figure 15 It is a schematic structural diagram of the limit assembly of the present invention;

[0063] Figure 16 Schematic diagram of the structure of the third adjustment component of the present invention;

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

[0065] Reference numerals in the above drawings: 1, machine 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 assembly; 44. Limiting assembly; 45. Limiting member;

[0067] 431. third servo motor; 432. threaded rod;

[0068] 441, rubber plate; 442, first slide; 443, connecting plate; 444, bottom plate; 445, second electric push rod; 446, third adjustment assembly; 447, hinge; 448, hinge seat;

[0069] 4461, adjustment seat; 4462, first electromagnet; 4463, second electromagnet; 4464, movable groove; 4465, second slide groove;

[0070] 51. First electric push rod; 52. Long housing; 53. No-go gauge detection assembly; 54. Go-go gauge detection assembly;

[0071] 531, cylinder; 532, first adjustment assembly; 533, rotating assembly; 534, bearing seat; 535, first bearing; 536, stop gauge 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. Gauge ring; 544. Second torque sensor. DETAILED DESCRIPTION

[0075] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0076] Example 1: Please refer to Figure 1 and Figure 2 A laser online detection device for screw size includes a body 1, a turntable 3 rotatably arranged in the body 1, and a first robotic arm 2 and a second robotic arm 6 arranged in the body 1 and located outside the turntable 3. The turntable 3 is an electric turntable 3 to drive a fixing mechanism 4 to rotate, thereby adjusting the position of the screw. It also includes a fixing mechanism 4 arranged in a ring array on the top of the turntable 3 and used to fix the screws, and a detection mechanism 5 arranged in the body 1 for performing a go gauge detection on the screws. The fixing mechanism 4 and the detection mechanism 5 cooperate to simultaneously perform a go gauge detection and a no-go gauge detection on the screws, and the go gauge detection is not affected while fixing the screws.

[0077] See also Figure 3 and Figure 4 , the detection mechanism 5 includes:

[0078] The long housing 52 is lifted and arranged in the body 1. A no-go gauge detection assembly 53 for detecting no-go gauges on screws is provided inside the long housing 52. A go gauge detection assembly 54 for detecting go gauges on screws is provided at the lower end of the inner wall of the long housing 52. A spacing is left between the go gauge detection assembly 54 and the no-go gauge detection assembly 53 so that the go gauge detection assembly 54 and the no-go gauge detection assembly 53 can be rotated to the screw thread in sequence to simultaneously perform go gauge detection and no-go gauge detection on the screw. The no-go gauge detection assembly 53 includes:

[0079] The cylinder 531 is disposed in the long shell 52 . A stop gauge ring 536 is fixedly provided at the bottom of the cylinder 531 . A rotating assembly 533 for driving the stop gauge ring 536 to rotate is provided at the top of the cylinder 531 .

[0080] See also Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11 , the through gauge detection component 54 includes:

[0081] The third bearing 541 is disposed 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. A go-gauge ring 543 is fixedly sleeved on the inner wall of the inner ring of the third bearing 541 to rotatably connect the go-gauge ring 543. The central axes of the go-gauge ring 543 and the stop-gauge ring 536 coincide with each other.

[0082] The second torque sensor 544 is disposed within the elongated housing 52. A first gear is fixedly mounted on the outer wall of the gauge ring 543. A second gear and a third gear are respectively engaged with the outer wall of the first gear. A first rotating shaft rotatably connected to the elongated housing 52 is fixedly mounted on the inner wall of the second gear. 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 disposed in the long housing 52 . The output shaft of the second servo motor 542 is fixedly provided with a 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.

[0084] A bent mounting frame is fixedly provided inside the body 1 and outside the turntable 3. A first electric push rod 51 is fixedly provided on the top of the mounting frame. The telescopic shaft of the first electric push rod 51 extends to the inside of the mounting frame and is fixedly connected to the top of the long housing 52.

[0085] During specific implementation, the long shell 52 is driven downward by the first electric push rod 51 until the go gauge ring 543 is located at the top of the screw. Then, the go gauge ring 543 is driven to rotate by the second servo motor 542. At the same time, the first electric push rod 51 gradually moves downward, so that the go gauge ring 543 rotates along the side wall of the screw and moves downward at the same time, so as to perform go gauge detection on the screw through the go gauge ring 543. When the go gauge ring 543 moves down a specified distance, the stop gauge ring 536 is located at the top of the screw, that is, the stop gauge ring 536 is driven to rotate by the rotating component 533, so as to perform stop gauge detection on the screw. After the go gauge ring 543 moves to the specified distance, the stop gauge ring 536 is screwed into the side wall of the screw to synchronously perform go gauge detection and stop gauge detection on the screw, thereby improving detection efficiency.

[0086] The spacing between the go gauge ring 543 and the stop gauge tube is preset according to the length of the screw, so that after the go gauge ring 543 moves to the specified distance, the stop gauge ring 536 is screwed into the side wall of the screw. According to the situation that the go gauge ring 543 needs to be completely screwed into the screw and the stop gauge ring 536 only needs to be screwed in one or two pitches, the go gauge ring 543 and the stop gauge ring 536 are rotated on the side wall of the screw at the same time and move downward to synchronously perform go gauge detection and stop gauge detection on the screw. Compared with the traditional method of first performing go gauge detection and then performing stop gauge detection, the detection efficiency is improved.

[0087] The first torque sensor 5333 and the second torque sensor 544 are used to respectively grasp the torque of the stop gauge ring 536 and the go gauge ring 543 during the rotation process, so as to facilitate the judgment of the detection status of the stop gauge ring 536 and the go gauge ring 543. 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 cooperate to operate normally, so that the stop gauge ring 536 and the go gauge ring 543 rotate and move downward at the same time to perform go / no-go detection. When the values ​​monitored by the first torque sensor 5333 and the second torque sensor 544 are abnormal, it leads to quality problems of the screw. At this time, the stop gauge ring 536 and the go gauge ring 543 reverse, and at the same time, the first electric push rod 51 drives the long shell 52 to move upward, so that the stop gauge ring 536 and the go gauge ring 543 are separated from the screw, so as to facilitate the detection of the next screw. The screw with quality problems is placed to the designated position by the first robotic arm 2 for subsequent processing.

[0088] See also Figure 4 and Figure 6 , the stop gauge detection component 53 also includes:

[0089] The first adjustment component 532 is provided on the outer wall of the long housing 52 to adjust the position of the stop gauge detection component 53. The first adjustment component 532 includes:

[0090] A first nut 5323 is threadedly connected to the outer wall of the housing. A second nut 5324 is threadedly connected to the outer wall of the housing and located at the bottom of the first nut 5323. A connecting sleeve 5325 is fixed to the bottom of the second nut 5324.

[0091] The connecting ring 5326 is slidably mounted 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 sidewall of the long housing 52 is provided with through slots arranged in an annular array. The inner walls of the through slots are each sleeved with a connecting block. A bearing seat 534 is fixedly provided on one side of the connecting block located within the long housing 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 to rotatably connect the stop gauge ring 536.

[0093] One side of the connecting block located outside the long shell 52 is fixedly connected to the inner wall of the connecting ring 5326;

[0094] The first adjustment assembly 532 further includes:

[0095] The first ring body 5321 is fixedly mounted on the outer wall of the long shell 52 , and the outer wall of the long shell 52 is mounted with a second ring body 5322 . A spring is mounted on the outer wall of the long shell 52 and between the second ring body 5322 and the first ring body 5321 to elastically support the first nut 5323 .

[0096] During specific implementation, by rotating the first nut 5323 and the second nut 5324, the connecting sleeve 5325 is driven to move while the outer wall of the long shell 52 rotates, thereby driving the connecting ring 5326 to move. The connecting ring 5326 drives the bearing seat 534 and the stop gauge ring 536 to move through the connecting block to adjust the distance between the stop gauge ring 536 and the through gauge 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 convenient to adjust the position of the stop gauge ring 536 without affecting the rotation of the stop gauge ring 536. By setting the annular groove and the annular slider, the connecting sleeve 5325 rotates and moves downward. Under the limitation of the through groove and the connecting block, the connecting ring 5326 only moves, thereby facilitating the adjustment of the height position of the stop gauge ring 536.

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

[0099] See also Figure 8 and Figure 9 , the rotating assembly 533 includes:

[0100] A sliding ring 5331 is provided on the inner wall of the elongated housing 52 for lifting. A second bearing 5332 is provided on the inner wall of the sliding ring 5331. 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 to rotatably connect the cylinder 531.

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

[0102] The connecting frame 5334 is fixed on the top of the sliding ring 5331. The first servo motor 5335 is fixed on the upper end of the inner wall of the connecting frame 5334. 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 gauge ring 536 to rotate.

[0103] In a specific implementation, the first servo motor 5335 is started, and 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 the stop gauge detection;

[0104] By setting the sliding ring 5331 and making it capable of rising and falling along the axial direction of the long shell 52, when the first adjusting component 532 adjusts the height of the stop gauge ring 536, the sliding ring 5331 is driven to rise and fall in linkage, thereby facilitating synchronous adjustment without affecting the fixing of the first servo motor 5335. In addition, it does not affect the first servo motor 5335 driving the stop gauge ring 536 to rotate.

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

[0106] For example 2, please refer to Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 、 Figure 16 and Figure 17 The difference between this embodiment and the first embodiment is that the fixing mechanism 4 includes:

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

[0108] The limiting assembly 44 includes:

[0109] The bottom plate 444 is movably disposed on the top of the base 42, and a second electric push rod 445 is hingedly connected to the outer side of the top of the bottom plate 444;

[0110] A hinge seat 448 is fixedly mounted on the top of the base plate 444. A hinge member 447 is hingedly mounted on both sides of the hinge seat 448. A connecting plate 443 is mounted on the side of the hinge member 447 away from the hinge seat 448. A third adjustment assembly 446 is mounted between the connecting plate 443 and the hinge member 447. A rubber plate 441 is fixedly mounted on the inner upper end of the connecting plate 443.

[0111] The first sliding groove 442 is provided on the outer side of the connecting plate 443 . A first slider is placed inside the first sliding 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 assembly 446 includes:

[0113] The adjustment seat 4461 is fixed to the inner wall of the connecting plate 443. The inner side of the adjustment seat 4461 is provided with spaced second sliding grooves 4465. The second sliding blocks are placed inside the second sliding grooves 4465. The second sliding blocks are fixedly connected to the hinge 447.

[0114] The movable groove 4464 is opened in the adjustment seat 4461 and is connected to the second slide groove 4465. The top and bottom of the second slider are fixed with mounting plates, and the first electromagnet 4462 is fixed on the side of the mounting plates away from each other. The top inner wall and the bottom inner wall of the movable groove 4464 are fixed with the second electromagnet 4463.

[0115] The second adjustment component 43 includes:

[0116] The third servo motor 431 is fixed to the side wall of the base 42. The base 42 has a chute formed inside. Sliders are placed inside the chute and arranged symmetrically about the center point of the chute. The tops of the slides are 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 through a coupling and extends into the slide groove. The threaded rod 432 is threadedly connected to the slider and is designed as a bidirectional screw.

[0118] During specific implementation, when it is necessary to fix a screw with a smaller head thickness, the opening of the screw head is placed on the side wall of the limiting member 45 that is adapted thereto by the second robotic arm 6, thereby preliminarily limiting the screw. Then, the second electric push rod 445 is started, and the telescopic shaft of the second electric push rod 445 drives the connecting plate 443 and the hinge 447 to rotate along the hinge of the hinge seat 448, so that the rubber plate 441 squeezes the screw downward along the head of the screw, thereby fixing the screw, avoiding the problem of unstable clamping caused by the traditional clamping method due to the smaller height of the screw head, which affects the detection.

[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 limiter 45, thereby preliminarily limiting 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, so that the rubber plate 441 fixes the head of the screw from the side, thereby fixing the screw for subsequent detection and use.

[0120] By hinged connection, the connecting plate 443 and the rubber plate 441 are respectively in an inclined or vertical state, so that the method of fixing the screws can be selected according to the thickness of the screw head, ensuring the stability of the fixation while being applicable to different types of screws.

[0121] The screw is initially limited by setting a limiter 45 that is compatible with the opening of the screw head, and the limit is performed according to the structural characteristics of the screw itself to improve the stability of the limit, and is fixed again in conjunction with the limiter component 44 to ensure the stability of the screw fixation without affecting the through-gauge detection of the screw.

[0122] The screw with a smaller screw head thickness is fixed by rotating the rubber plate 441 to squeeze the screw head downward, and the limit piece 45 adapted to the screw is used to improve the stability of the screw fixation compared to the traditional clamping method. In actual design, the position of the screw head squeezed by the rubber plate 441 and the connecting plate 443 is adjusted to avoid affecting the through gauge detection.

[0123] Through the first electromagnet 4462 and the second electromagnet 4463 of the third adjusting component 446, a repulsive force is generated on the side where the first electromagnet 4462 and the second electromagnet 4463 are close to each other, thereby adjusting the support position of the second slider to adjust the position of the connecting plate 443 and the rubber plate 441, so that when fixing screws with a larger head thickness, the connecting plate 443 and the rubber plate 441 are avoided from being located above the screw head, thereby avoiding affecting the through gauge detection and facilitating the clamping and fixation of screws with different head thicknesses.

[0124] The third servo motor 431 drives the sliders to move closer to or away from each other along the slide groove, thereby adjusting the position of the limit assemblies 44 on both sides of the fixed plate 41, making it easy to adjust according to the size of the screw, and making it easy to make the rubber plates 441 close to the heads of the clamping screws, thereby facilitating the fixing of the screws.

[0125] When the second robotic arm 6 places the screw on the limiter 45, it can grasp the position of the screw head opening through an external visual device, such as a visual camera, and adjust it through the rotating part at the end of the second robotic arm 6 so that the screw head opening is stably mounted on the side wall of the limiter 45. This is the existing technology and will not be elaborated here.

[0126] When the present invention is implemented, the screws to be inspected are placed on the turntable 3 by the second robotic arm 6, and the screws are fixed by the fixing mechanism 4. Then, the turntable 3 rotates, so that the fixing mechanism 4 with the screws fixed is transferred to the bottom of the detection mechanism 5 to perform a go / no-go gauge inspection on the screws. After the inspection is completed, the turntable 3 rotates again, and the screws with screws that have not been inspected are transferred to the bottom of the detection mechanism 5, and the screws that have been inspected are taken out by the first robotic arm 2, and this cycle is repeated for inspection.

[0127] The first servo motor 5335 and the first electric push rod 51 and other electronic components in the present invention are connected to the external power supply and controller through wires to facilitate actual control and use. This is existing technology and will not be described in detail here.

[0128] At the same time, the contents not described in detail in this specification belong to the existing technology well known to those skilled in the art.

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

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

Claims

1. A laser online detection device for screw size, comprising a body, a turntable rotatably arranged in the body, and a first robotic arm and a second robotic arm arranged in the body and located outside the turntable, characterized in that: The machine also includes a fixing mechanism arranged in a circular array on the top of the turntable for fixing the screws and a detection mechanism arranged in the machine body for performing a go / no-go gauge detection on the screws. The fixing mechanism and the detection mechanism cooperate to simultaneously perform a go / no-go gauge detection on the screws, and the go / no-go gauge detection is not affected while fixing the screws. The detection mechanism includes: The long shell is lifted and arranged in the machine body. A no-go gauge detection component for detecting no-go gauges on screws is arranged inside the long shell. A go gauge detection component for detecting through gauges on screws is arranged at the lower end of the inner wall of the long shell. A spacing is left between the go gauge detection component and the no-go gauge detection component so that the go gauge detection component and the no-go gauge detection component can be rotated to the screw thread in sequence to simultaneously perform go gauge detection and no-go gauge detection on the screw. The no-go gauge detection component includes: The cylinder is arranged in the long shell body, a stop gauge ring is fixedly provided at the bottom of the cylinder, and a rotating assembly for driving the stop gauge ring to rotate is provided at the top of the cylinder.

2. The laser online detection device for screw size according to claim 1, characterized in that: The stop gauge detection component also includes: The first adjustment component is provided on the outer wall of the elongated housing to adjust the position of the stop gauge detection component. The first adjustment component includes: A first nut is threadedly connected to the outer wall of the housing, a second nut is threadedly connected to the outer wall of the housing and located at the bottom of the first nut, and a connecting sleeve is fixedly provided at the bottom of the second nut; The connecting ring is slidably arranged on the inner wall of the connecting sleeve. The inner wall of the connecting sleeve is provided with an annular sliding groove. An annular slider is placed inside the annular sliding groove. The inner wall of the annular slider is fixedly connected to the outer wall of the connecting ring.

3. The laser online detection device for screw size according to claim 2, characterized in that: The side wall of the long shell is provided with through grooves arranged in a circular array, the inner walls of the through grooves are sleeved with connecting blocks, a bearing seat is fixedly provided on one side of the connecting block located 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 so as to be rotatably connected to the stop gauge ring; One side of the connecting block located outside the long shell is fixedly connected to the inner wall of the connecting ring; The first adjustment component also includes: The first ring body is fixedly sleeved on the outer wall of the long shell, the outer wall of the long shell is sleeved with the second ring body, and the outer wall of the long shell and between the second ring body and the first ring body are sleeved with a spring to elastically support the first nut.

4. The laser online detection device for screw size according to claim 1, characterized in that: The rotating assembly comprises: A sliding ring is provided on the inner wall of the long shell in a lifting manner. 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 rotate and connect the cylinder; A first torque sensor is fixedly mounted on the inner wall of the sliding ring and is arranged on the outer wall of the cylinder to monitor the torque of the cylinder rotation; The connecting frame is fixed on the top of the sliding ring. The upper end of the inner wall of the connecting frame is fixed with a first servo motor. 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 gauge ring to rotate.

5. The laser online detection device for screw size according to claim 1, characterized in that: The through gauge detection component includes: The third bearing is arranged 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 stop-gauge ring coincide with each other. The second torque sensor is disposed in the long housing. The outer wall of the gauge ring is fixed with a first gear. The outer wall of the first gear is meshed with a second gear and a third gear on both sides. The inner wall of the second gear is fixed with a first shaft rotatably connected to the long housing. The inner wall of the second torque sensor is disposed on a side wall of the first shaft. The second servo motor is fixed in the long housing. The output shaft of the second servo motor is fixed with 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.

6. The laser online detection device for screw size according to claim 5, characterized in that: A mounting frame with a bent design is fixedly provided inside the body and outside the turntable, a first electric push rod is fixedly provided on the top of the mounting frame, and a telescopic shaft of the first electric push rod extends to the inside of the mounting frame and is fixedly connected to the top of the long housing; The bottom of the go gauge ring is level with the bottom of the long shell, or the bottom of the go gauge ring is located at the bottom of the long shell.

7. The laser online detection device for screw size according to claim 6, characterized in that: The fixing mechanism comprises: The base is fixed on the top of the turntable, a fixed disk is fixed at the top center of the base, a limit piece adapted to the opening of the screw head is fixed at the top center of the fixed disk, and limit components symmetrically arranged with the center point of the base are provided on the top of the base and on both sides of the fixed disk, and a second adjustment component for adjusting the position of the limit component is provided on the side wall of the base.

8. The laser online detection device for screw size according to claim 7, characterized in that: The limiting component includes: A bottom plate is movably arranged on the top of the base, and a second electric push rod is hingedly connected to the outer side of the top of the bottom plate; The hinge seat is fixed on the top of the bottom plate, and hinges are hinged on both sides of the hinge seat. A connecting plate is provided on the side of the hinge away from the hinge seat, and a third adjustment component is provided between the connecting plate and the hinge. A rubber plate is fixed on the inner upper end of the connecting plate; The first sliding groove is arranged on the outer side of the connecting plate. The first sliding block is placed inside the first sliding groove. The side wall of the first sliding block is hinged to the telescopic shaft of the second electric push rod.

9. The laser online detection device for screw size according to claim 8, characterized in that: The third adjustment component includes: The adjustment seat is fixed on the inner wall of the connecting plate, and the inner side of the adjustment seat is provided with second sliding grooves arranged at intervals. The second sliding blocks are placed inside the second sliding grooves, and the second sliding blocks are fixedly connected to the hinge; The movable groove is opened in the adjustment seat and is connected to the second slide groove. The top and bottom of the second slider are fixed with mounting plates, and the sides of the mounting plates away from each other are fixed with first electromagnets. The top inner wall and bottom inner wall of the movable groove are fixed with second electromagnets.

10. The laser online detection device for screw size according to claim 9, characterized in that: The second adjustment component includes: The third servo motor is fixedly mounted on the side wall of the base. A slide groove is formed inside the base. Slide blocks are placed inside the slide groove and are symmetrically arranged about the center point of the slide groove. The top of the slide block is fixedly connected to the bottom of the base plate. The threaded rod is fixed to the output shaft of the third servo motor through a coupling and extends into the slide groove. The threaded rod is threadedly connected to the slider and has a bidirectional screw design.

Images