Workpiece positioning mechanism based on artificial intelligence machine vision

Abstract

The invention discloses a workpiece positioning mechanism based on artificial intelligence machine vision. The workpiece positioning mechanism comprises a frame, a movable frame movably installed in the frame, a multi-degree-of-freedom platform movably arranged in the movable frame and a clamp arranged on the multi-degree-of-freedom platform. And a Z-axis adjusting mechanism is arranged in the frame. Through cooperation of the multiple sets of axial adjusting mechanisms, a workpiece can be moved, positioned and adjusted in any direction, so that the requirement for all-directional accurate positioning of the workpiece is met, the workpiece has the comprehensive adjusting capacity in the X direction, the Y direction and the Z direction, and the workpiece can be adjusted to the ideal machining posture advantageously; in addition, through vision of the multiple sets of axial cameras and sensing positioning cooperation of the sensing positioning light bars, flexible strain can be conducted in real time according to the actual state of the workpiece, positioning deviation is greatly reduced, the subsequent machining quality of the workpiece is guaranteed, and the existing production requirements are greatly met.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece positioning mechanisms, and in particular to a workpiece positioning mechanism based on artificial intelligence machine vision. Background Art

[0002] In today's advanced manufacturing field, the precise positioning of workpieces is crucial for many processes such as machining, assembly, and inspection.

[0003] However, traditional workpiece positioning mostly relies on manual operation or simple mechanical devices, with low efficiency and difficult to guarantee accuracy. Most existing workpiece positioning mechanisms only have limited translation functions and are difficult to meet the all-round precise positioning requirements of workpieces with complex shapes. Due to the lack of flexible adjustment ability for comprehensive translation in the X, Y, and Z directions, the workpiece cannot be quickly adjusted to the ideal machining posture. Moreover, traditional positioning means are difficult to flexibly respond in real time according to the actual state of the workpiece, often resulting in positioning deviations and affecting the quality of subsequent processes, which is contrary to the current trend of intelligent manufacturing that pursues high precision and high efficiency. Therefore, there is an urgent need for an innovative workpiece positioning mechanism based on artificial intelligence machine vision. Summary of the Invention

[0004] Based on the technical problems existing in the background art, the present invention proposes a workpiece positioning mechanism based on artificial intelligence machine vision.

[0005] A workpiece positioning mechanism based on artificial intelligence machine vision proposed by the present invention includes a frame, a moving frame movably installed in the frame, a multi-degree-of-freedom platform movably arranged in the moving frame, and a fixture arranged on the multi-degree-of-freedom platform; a Z-axis adjustment mechanism is provided in the frame, and a lifting table is movably installed in the frame along the up and down direction of the Z-axis through the Z-axis adjustment mechanism; an X-axis adjustment mechanism is provided on the lifting table, and the moving frame is movably installed on the lifting table along the left and right direction of the X-axis through the X-axis adjustment mechanism; a Y-axis adjustment mechanism is provided on the moving frame, and the multi-degree-of-freedom platform is movably installed on the moving frame along the front and back direction of the Y-axis through the Y-axis adjustment mechanism;

[0006] The X-axis adjustment mechanism includes a first groove provided on the lifting table and second grooves provided on both sides of the first groove. A horizontally arranged lead screw is rotatably installed in the first groove, and both ends of the lead screw respectively rotatably penetrate through the second grooves; moving blocks are fixedly connected to both sides of the bottom of the moving frame, a lead screw nut is fixedly installed on the moving block, and the lead screw is in threaded connection with the lead screw nut; a stepping motor is arranged at the bottom of the lifting table below the first groove, an output shaft of the stepping motor rotatably extends into the first groove and is fixedly connected with a worm, a worm gear is fixedly sleeved in the middle of the lead screw, and the worm is meshed with the worm gear;

[0007] The Y-axis adjustment mechanism includes guide rails provided on both sides of the inner wall of the bottom of the moving frame, and the guide rails are arranged in the front-back direction. Slide seats are slidably mounted on the guide rails in the front-back direction, and the slide seats are fixedly connected to the bottom side of the multi-degree-of-freedom platform. Servo motors are fixedly installed on the inner walls of both sides of the moving frame. The output shafts of the servo motors are fixedly connected to screws arranged in the front-back direction. Threaded pipes are fixedly connected to both sides of the multi-degree-of-freedom platform, and the threaded pipes are threadedly sleeved on the screws in the front-back direction.

[0008] As a further setting of the present invention, the Z-axis adjustment mechanism includes mounting brackets fixedly installed on the inner walls of both sides of the frame. A gear motor is fixedly installed inside the mounting brackets. The output end of the gear motor is fixedly connected to a circular gear. Vertical straight racks are fixedly connected to both sides of the bottom of the lifting platform, and the circular gear meshes with the straight racks.

[0009] As a further setting of the present invention, a support frame is fixedly installed inside the frame on the inner side of the straight rack. An electric telescopic cylinder is fixedly installed inside the support frame. The output end of the electric telescopic cylinder movably penetrates to the outside of the support frame and is fixedly connected to a positioning abutting block. An anti-slip positioning layer is fixedly arranged on the inner side of the straight rack, and the positioning abutting block abuts and cooperates with the anti-slip positioning layer for positioning.

[0010] As a further setting of the present invention, guide sliders are fixedly arranged at both ends of the lifting platform, and guide slide rails are arranged on the inner walls of both sides of the frame. The guide sliders are slidably mounted on the guide slide rails in the vertical direction.

[0011] As a further setting of the present invention, a linkage slider is fixedly connected to the bottom of the moving block. A sliding through groove is provided on the bottom inner wall of the second groove, and the bottom of the linkage slider slides horizontally through to the lower side of the sliding through groove.

[0012] As a further setting of the present invention, support balls are rollably mounted on the bottom side of the slide seat. A rolling support groove is arranged on the top of the guide rail in the front-back direction. The bottom side of the support ball extends into the rolling support groove and rolls in the rolling support groove in the front-back direction.

[0013] As a further setting of the present invention, a controller is arranged on the frame, and the controller is electrically connected to the gear motor, the electric telescopic cylinder, the stepping motor, and the servo motor for control.

[0014] As a further setting of the present invention, it further includes a CCD camera unit for photographing the workpiece image and outputting an analog signal, an image acquisition unit for converting the analog signal into a digital signal, and a computer for analyzing and processing the image by running an AI algorithm and calculating the workpiece deviation; and the CCD camera unit, the image acquisition unit, and the computer are all electrically connected to the controller.

[0015] As a further arrangement of the present invention, the CCD camera unit includes a first CCD camera disposed at the bottom of the linkage slider, a second CCD camera disposed on the inner walls of both sides of the moving frame, and a third CCD camera disposed inside the straight rack; an X-axis sensing and positioning light bar is provided at the top of the support frame, and the first CCD camera cooperates with the X-axis sensing and positioning light bar for visual sensing and positioning; Y-axis sensing and positioning light bars are provided on the inner walls of both sides of the moving frame along the front-back direction, and the second CCD camera cooperates with the Y-axis sensing and positioning light bars for visual sensing and positioning; a Z-axis sensing and positioning light bar is provided on the top side of the X-axis sensing and positioning light bar, and the third CCD camera is adapted to the Z-axis sensing and positioning light bar.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, by providing the CCD camera unit, it can be used to capture workpiece images from the X, Y, and Z directions and output analog signals to the image acquisition unit. The image acquisition unit converts the analog signals into digital signals and transmits them to the computer. The computer runs the AI algorithm, analyzes and processes the images, and calculates the workpiece deviation. Then, through the controller, the X-axis adjustment mechanism, the Y-axis adjustment mechanism, and the Z-axis adjustment mechanism are coordinated to move and adjust the workpiece in the X, Y, and Z directions in a coordinated manner, so as to accurately position and adjust the workpiece.

[0018] 2. In the present invention, by providing the X-axis adjustment mechanism, the stepping motor drives the worm to rotate forward and backward. When the worm rotates, it meshes with the worm wheel and drives the lead screw to rotate, so that the moving block performs left or right screw drive on the lead screw through the lead screw nut. When the moving block moves, it drives the moving frame, the multi-degree-of-freedom platform, and the workpiece clamped by the fixture to move left or right. In this way, the left and right position adjustment of the workpiece on the multi-degree-of-freedom platform along the X-axis can be carried out; at the same time, when the moving block moves, it also drives the first CCD camera at the bottom of the linkage slider to move left and right. When the first CCD camera moves, it also cooperates with the X-axis sensing and positioning light bar for visual position sensing, so as to accurately control the left and right adjustment accuracy of the workpiece.

[0019] 3. In the present invention, by providing the Y-axis adjustment mechanism, when the servo motor works, it drives the screw to rotate forward and backward, so that the threaded tube performs screw drive along the front-back Y-axis direction on the screw. When the threaded tube moves, it drives the workpiece on the multi-degree-of-freedom platform to adjust the position in the front-back direction along the Y-axis. In this way, the front-back position adjustment of the workpiece on the multi-degree-of-freedom platform along the Y-axis can be carried out; at the same time, when the multi-degree-of-freedom platform moves back and forth, it also drives the second CCD camera to move and cooperate with the Y-axis sensing and positioning light bar in real time for position real-time sensing and positioning, so as to accurately position the front-back position of the workpiece in the Y-axis direction.

[0020] 4. In the present invention, by providing a Z-axis adjustment mechanism, when the output end of the electric telescopic cylinder contracts, it drives the positioning abutting block to move and releases the abutting positioning of the positioning abutting block against the anti-slip positioning layer. Subsequently, the gear motor operates to drive the circular gear to rotate and mesh with the straight rack for transmission, thereby driving the lifting platform to move up and down. The lifting platform drives the moving frame, the multi-degree-of-freedom platform, and the workpiece clamped by the fixture to move up and down. In this way, the up-and-down position of the workpiece on the multi-degree-of-freedom platform along the Z-axis can be adjusted. Subsequently, the output end of the electric telescopic cylinder outputs to drive the positioning abutting block to move outwards and makes the positioning abutting block perform abutting positioning against the anti-slip positioning layer. At the same time, when the straight rack moves up and down, it also drives the third CCD camera to move up and down and perform lifting sensing positioning with the Z-axis sensing positioning light strip, so as to ensure precise movement adjustment of the workpiece along the Z-axis.

[0021] In summary, for the workpiece positioning mechanism based on artificial intelligence machine vision, through the simultaneous cooperation of multiple groups of axial adjustment mechanisms, it can perform moving and positioning adjustment of the workpiece in any orientation to meet the all-round precise positioning requirements of the workpiece, so that the workpiece has the comprehensive adjustment ability along multiple directions of X, Y, and Z, which is beneficial to adjusting the workpiece to the ideal processing posture. Moreover, through the sensing positioning cooperation of multiple groups of axial cameras and sensing positioning light strips, it can flexibly respond in real time according to the actual state of the workpiece, greatly reducing the positioning deviation, which is beneficial to ensuring the subsequent processing quality of the workpiece and greatly meeting the existing production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a workpiece positioning mechanism based on artificial intelligence machine vision proposed by the present invention;

[0023] Figure 2 is a schematic cross-sectional structure diagram of the present invention;

[0024] Figure 3 is the present invention Figure 2 an enlarged schematic structural diagram of part A in the present invention;

[0025] Figure 4 is the present invention Figure 3 an enlarged schematic structural diagram of part B in the present invention;

[0026] Figure 5 is a schematic structural diagram among the worm, worm gear, and lead screw in the present invention

[0027] Figure 6 is a block diagram when the controller, CCD camera unit, image acquisition unit, computer, moving frame, multi-degree-of-freedom platform, and fixture in the present invention are working.

[0028] In the figure: 1. Frame; 101. Controller; 102. CCD camera unit; 103. Image acquisition unit; 104. Computer; 2. Moving frame; 3. Multi-degree-of-freedom platform; 4. Fixture; 5. Support frame; 6. Electric telescopic cylinder; 7. Positioning abutting block; 8. Straight rack; 801. Anti-slip positioning layer; 9. Mounting frame; 10. Gear motor; 11. Circular gear; 12. Lifting platform; 121. First groove; 122. Second groove; 123. Sliding through groove; 13. Guide rail; 14. Guide slider; 15. Third CCD camera; 16. Z-axis sensing and positioning light bar; 17. X-axis sensing and positioning light bar; 18. Stepper motor; 19. Worm; 20. Worm gear; 21. Lead screw; 22. Moving block; 23. Lead screw nut; 24. Linkage slider; 25. First CCD camera; 26. Servo motor; 27. Screw; 28. Threaded tube; 29. Slide base; 291. Support ball; 292. Rolling support groove; 30. Guide rail; 31. Second CCD camera; 32. Y-axis sensing and positioning light bar. Detailed implementation mode

[0029] The present invention will be further explained below in conjunction with specific embodiments.

[0030] Embodiment

[0031] Reference Figures 1-6 In this embodiment, a workpiece positioning mechanism based on artificial intelligence machine vision is proposed, including a frame 1, a moving frame 2 movably installed in the frame 1, a multi-degree-of-freedom platform 3 movably arranged in the moving frame 2, and a fixture 4 arranged on the multi-degree-of-freedom platform 3; a Z-axis adjusting mechanism is arranged in the frame 1, and a lifting platform 12 is movably installed in the frame 1 along the up and down direction of the Z axis through the Z-axis adjusting mechanism; an X-axis adjusting mechanism is arranged on the lifting platform 12, and the moving frame 2 is movably installed on the lifting platform 12 along the left and right direction of the X axis through the X-axis adjusting mechanism; a Y-axis adjusting mechanism is arranged on the moving frame 2, and the multi-degree-of-freedom platform 3 is movably installed on the moving frame 2 along the front and back direction of the Y axis through the Y-axis adjusting mechanism;

[0032] Refer to Figures 2-3 In, the X-axis adjusting mechanism includes a first groove 121 arranged on the lifting platform 12 and second grooves 122 arranged on both sides of the first groove 121. A horizontally arranged lead screw 21 is rotatably installed in the first groove 121, and both ends of the lead screw 21 respectively rotatably penetrate through the second grooves 122; moving blocks 22 are fixedly connected to both sides of the bottom of the moving frame 2, lead screw nuts 23 are fixedly installed on the moving blocks 22, and the lead screw 21 is in threaded connection with the lead screw nuts 23; a stepper motor 18 is arranged at the bottom of the lifting platform 12 below the first groove 121, an output shaft of the stepper motor 18 rotates and extends into the first groove 121 and is fixedly connected with a worm 19, a worm gear 20 is fixedly sleeved on the middle of the lead screw 21, and the worm 19 is meshed with the worm gear 20;

[0033] Refer to Figures 2-3 Figures 2-3 , the Y-axis adjustment mechanism includes guide rails 30 provided on both sides of the inner wall of the bottom of the moving frame 2, and the guide rails 30 are arranged in the front-rear direction. A sliding seat 29 is slidably mounted on the guide rails 30 in the front-rear direction, and the sliding seat 29 is fixedly connected to the bottom side of the multi-degree-of-freedom platform 3. Servo motors 26 are fixedly installed on both inner walls of the moving frame 2. The output shafts of the servo motors 26 are fixedly connected to screws 27 arranged in the front-rear direction. Threaded tubes 28 are fixedly connected to both sides of the multi-degree-of-freedom platform 3, and the threaded tubes 28 are threadedly sleeved on the screws 27 in the front-rear direction.

[0034] Refer to Figure 2 Figure 2 , the Z-axis adjustment mechanism includes mounting brackets 9 fixedly installed on both inner walls of the frame 1. A gear motor 10 is fixedly installed inside the mounting brackets 9. The output end of the gear motor 10 is fixedly connected to a circular gear 11. Vertical straight racks 8 are fixedly connected to both sides of the bottom of the lifting platform 12. The circular gear 11 meshes with the straight racks 8. A support frame 5 is fixedly installed inside the frame 1 located inside the straight racks 8. An electric telescopic cylinder 6 is fixedly installed inside the support frame 5. The output end of the electric telescopic cylinder 6 movably penetrates to the outside of the support frame 5 and is fixedly connected to a positioning abutting block 7. An anti-slip positioning layer 801 is fixedly arranged on the inner side of the straight rack 8. The positioning abutting block 7 is in contact and positioning cooperation with the anti-slip positioning layer 801.

[0035] Refer to Figures 2-3 Figures 2-3 , guide sliders 14 are fixedly arranged at both ends of the lifting platform 12. Guide slide rails 13 are arranged on both inner walls of the frame 1. The guide sliders 14 are slidably mounted on the guide slide rails 13 in the vertical direction. A linkage slider 24 is fixedly connected to the bottom of the moving block 22. A sliding through groove 123 is provided on the bottom inner wall of the second groove 122. The bottom of the linkage slider 24 slides horizontally through to the lower side of the sliding through groove 123.

[0036] Refer to Figures 3-4 Figures 3-4 , support balls 291 are rollably mounted on the bottom side of the sliding seat 29. A rolling support groove 292 is arranged on the top of the guide rail 30 in the front-rear direction. The bottom side of the support ball 291 extends into the rolling support groove 292 and rolls in the rolling support groove 292 in the front-rear direction.

[0037] Among them, a controller 101 is arranged on the frame 1. The controller 101 is electrically connected to the gear motor 10, the electric telescopic cylinder 6, the stepping motor 18, and the servo motor in an electrically controlled manner.

[0038] Further, it further includes a CCD camera unit 102 for capturing an image of the workpiece and outputting an analog signal, an image acquisition unit 103 for converting the analog signal into a digital signal, and a computer 104 for analyzing and processing the image by running an AI algorithm and calculating the deviation of the workpiece; and the CCD camera unit 102, the image acquisition unit 103, and the computer 104 are all electrically connected to the controller 101.

[0039] Among them, the CCD camera unit 102 includes a first CCD camera 25 provided at the bottom of the linkage slider 24, a second CCD camera 31 provided on the inner walls of both sides of the moving frame 2, and a third CCD camera 15 provided inside the straight rack 8; an X-axis sensing and positioning light bar 17 is provided at the top of the support frame 5, and the first CCD camera 25 cooperates with the X-axis sensing and positioning light bar 17 for visual sensing and positioning; Y-axis sensing and positioning light bars 32 arranged in the front-rear direction are provided on the inner walls of both sides of the moving frame 2, and the second CCD camera 31 cooperates with the Y-axis sensing and positioning light bars 32 for visual sensing and positioning; a Z-axis sensing and positioning light bar 16 is provided on the top side of the X-axis sensing and positioning light bar 17, and the third CCD camera 15 is adapted to the Z-axis sensing and positioning light bar 16.

[0040] As Figures 1-6 Shown is a workpiece positioning mechanism based on artificial intelligence machine vision. When in use: First, the controller 101 is used to control the fixture 4 on the multi-degree-of-freedom platform 3 to clamp and fix the workpiece to be processed. Subsequently, each camera in the CCD camera unit 102 works, so as to capture an image of the workpiece from the X, Y, and Z directions and output an analog signal to the image acquisition unit 103. The image acquisition unit 103 converts the analog signal into a digital signal and transmits it to the computer 104. The computer 104 runs the AI algorithm, analyzes and processes the image, and calculates the deviation of the workpiece. Then, the controller 101 is used to control the coordinated operation and cooperation of the X-axis adjustment mechanism, the Y-axis adjustment mechanism, and the Z-axis adjustment mechanism. When the stepping motor 18 in the X-axis adjustment mechanism works, it will drive the worm 19 to rotate forward and backward. When the worm 19 rotates, it meshes with the worm gear 20 and drives the lead screw 21 to rotate, so that the moving block 22 performs left or right screw drive on the lead screw 21 through the lead screw nut 23. When the moving block 22 moves, it drives the moving frame 2, the multi-degree-of-freedom platform 3, and the workpiece clamped by the fixture 4 to move left or right. In this way, the left and right position adjustment of the workpiece on the multi-degree-of-freedom platform 3 along the X-axis can be performed; at the same time, when the moving block 22 moves, it also drives the first CCD camera 25 at the bottom of the linkage slider 24 to move left and right. When the first CCD camera 25 moves, it also cooperates with the X-axis sensing and positioning light bar 17 for visual position sensing, so as to accurately control the left and right adjustment accuracy of the workpiece;

[0041] As Figures 2-3In [the above situation], when the servo motor 26 in the Y-axis adjustment mechanism works, it drives the screw rod 27 to rotate forward and backward, causing the threaded tube 28 to perform threaded transmission along the front and back Y-axis directions on the screw rod 27. When the threaded tube 28 moves, it drives the workpiece on the multi-degree-of-freedom platform 3 to adjust the position in the front and back directions along the Y-axis, so that the front and back positions of the workpiece on the multi-degree-of-freedom platform 3 along the Y-axis can be adjusted; at the same time, when the multi-degree-of-freedom platform 3 moves back and forth, it also drives the second CCD camera 31 to move and cooperate with the Y-axis sensing and positioning light bar 32 in real time for real-time position sensing and positioning, so as to accurately position the front and back positions of the workpiece in the Y-axis direction;

[0042] As Figures 2-3 In [the above situation], when using the Z-axis adjustment mechanism, first, the output end of the electric telescopic cylinder 6 contracts to drive the positioning abutting block 7 to move and release the abutting positioning of the positioning abutting block 7 against the anti-slip positioning layer 801. Subsequently, the gear motor 10 works to drive the circular gear 11 to rotate and engage with the straight rack 8 for transmission, thereby driving the lifting platform 12 to move up and down. The lifting platform 12 drives the moving frame 2, the multi-degree-of-freedom platform 3, and the workpiece clamped by the fixture 4 to move up and down, so that the up and down positions of the workpiece on the multi-degree-of-freedom platform 3 along the Z-axis can be adjusted. Subsequently, the output end of the electric telescopic cylinder 6 outputs to drive the positioning abutting block 7 to move outward and make the positioning abutting block 7 abut against the anti-slip positioning layer 801 for positioning; at the same time, when the straight rack 8 moves up and down, it also drives the third CCD camera 15 to move up and down and perform lifting sensing and positioning with the Z-axis sensing and positioning light bar 16, so as to ensure precise movement adjustment of the workpiece along the Z-axis;

[0043] Finally, through the simultaneous cooperation of multiple groups of axial adjustment mechanisms, the present invention can perform moving and positioning adjustment of the workpiece in any orientation to meet the all-round precise positioning requirements of the workpiece, so that the workpiece has the comprehensive adjustment ability along multiple directions of X, Y, and Z, which is beneficial to adjusting the workpiece to the ideal processing posture; moreover, through the sensing and positioning cooperation of multiple groups of axial cameras and sensing and positioning light bars, it can flexibly respond according to the actual state of the workpiece in real time, greatly reducing the positioning deviation, which is beneficial to ensuring the subsequent processing quality of the workpiece and greatly meeting the existing production requirements.

[0044] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A workpiece positioning mechanism based on artificial intelligence machine vision, comprising a frame (1), a moving frame (2) movably installed in the frame (1), a multi-degree-of-freedom platform (3) movably arranged in the moving frame (2), and a fixture (4) arranged on the multi-degree-of-freedom platform (3); characterized in that: The frame (1) is provided with a Z-axis adjustment mechanism, and a lifting platform (12) is installed in the frame (1) in a manner that it can move along the vertical direction of the Z axis through the Z-axis adjustment mechanism; the lifting platform (12) is provided with an X-axis adjustment mechanism, and the moving frame (2) is installed on the lifting platform (12) in a manner that it can move along the left-right direction of the X axis through the X-axis adjustment mechanism; the moving frame (2) is provided with a Y-axis adjustment mechanism, and the multi-degree-of-freedom platform (3) is installed on the moving frame (2) in a manner that it can move along the front-back direction of the Y axis through the Y-axis adjustment mechanism; The X-axis adjustment mechanism comprises a first groove (121) provided on the lifting platform (12), and second grooves (122) provided on both sides of the first groove (121); a transversely arranged screw rod (21) is rotatably installed in the first groove (121), and two ends of the screw rod (21) are respectively rotatably inserted into the second groove (122); both sides of the bottom of the moving frame (2) are fixedly connected with moving blocks (22), a screw rod nut (23) is fixedly installed on the moving block (22), and the screw rod (21) and the screw rod nut (23) are threadedly connected; a stepping motor (18) is provided at the bottom of the lifting platform (12) below the first groove (121), the output shaft of the stepping motor (18) is rotatably extended into the first groove (121) and is fixedly connected with a worm (19), a worm wheel (20) is fixedly sleeved in the middle of the screw rod (21), and the worm wheel (19) is meshed with the worm wheel (20); The Y-axis adjustment mechanism comprises guide rails (30) arranged on both sides of the inner wall at the bottom of the moving frame (2), and the guide rails (30) are arranged along the front-to-back direction, and a slide seat (29) is slidably mounted on the guide rails (30) along the front-to-back direction, and the slide seat (29) is fixedly connected to the bottom side of the multi-degree-of-freedom platform (3); servo motors (26) are fixedly mounted on the inner walls on both sides of the moving frame (2), and the output shaft of the servo motor (26) is fixedly connected to a screw rod (27) arranged in the front-to-back direction, and threaded tubes (28) are fixedly connected on both sides of the multi-degree-of-freedom platform (3), and the threaded tubes (28) are connected to the screw rods (27) by threads along the front-to-back direction.

2. The workpiece positioning mechanism based on artificial intelligence machine vision according to claim 1, characterized in that: The Z-axis adjustment mechanism comprises a mounting frame (9) fixedly mounted on the inner walls on both sides of the frame (1), a gear motor (10) fixedly mounted inside the mounting frame (9), an output end of the gear motor (10) fixedly connected to a circular gear (11), and both sides of the bottom of the lifting platform (12) fixedly connected to vertically arranged spur racks (8), the circular gear (11) meshing with the spur racks (8).

3. The workpiece positioning mechanism based on artificial intelligence machine vision according to claim 2 is characterized in that: A support frame (5) is fixedly installed in a frame (1) located inside the spur rack (8), an electric telescopic cylinder (6) is fixedly installed inside the support frame (5), an output end of the electric telescopic cylinder (6) movably penetrates the outside of the support frame (5) and is fixedly connected to a positioning stopper (7), an anti-slip positioning layer (801) is fixedly provided on the inside of the spur rack (8), and the positioning stopper (7) and the anti-slip positioning layer (801) are in contact and positioning cooperation.

4. The workpiece positioning mechanism based on artificial intelligence machine vision according to claim 1, characterized in that: Guide slide blocks (14) are fixedly arranged at both ends of the lifting platform (12), guide rails (13) are arranged on the inner walls of both sides of the frame (1), and the guide slide blocks (14) are slidably installed on the guide rails (13) in the vertical direction.

5. The workpiece positioning mechanism based on artificial intelligence machine vision according to claim 1, characterized in that: The bottom of the moving block (22) is fixedly connected with a linkage slider (24), the bottom inner wall of the second groove (122) is provided with a sliding groove (123), and the bottom of the linkage slider (24) slides in a horizontal direction to penetrate below the sliding groove (123).

6. The workpiece positioning mechanism based on artificial intelligence machine vision according to claim 1, characterized in that: A supporting ball (291) is rollingly mounted on the bottom side of the slide seat (29), a rolling support groove (292) is provided on the top of the guide rail (30) along the front-rear direction, and the bottom side of the supporting ball (291) extends into the rolling support groove (292) and is rollingly arranged in the rolling support groove (292) along the front-rear direction.

7. The workpiece positioning mechanism based on artificial intelligence machine vision according to claim 1, characterized in that: The frame (1) is provided with a controller (101), and the controller (101) is electrically controlled and connected to the gear motor (10), the electric telescopic cylinder (6), the stepping motor (18), and the servo motor respectively.

8. The workpiece positioning mechanism based on artificial intelligence machine vision according to claim 1, characterized in that: The device also includes a CCD camera unit (102) for photographing a workpiece image and outputting an analog signal, an image acquisition unit (103) for converting the analog signal into a digital signal, and a computer (104) for analyzing and processing the image by running an AI algorithm and calculating the workpiece deviation; and the CCD camera unit (102), the image acquisition unit (103), and the computer (104) are all electrically connected to the controller (101).

9. The workpiece positioning mechanism based on artificial intelligence machine vision according to claim 1, characterized in that: The CCD camera unit (102) comprises a first CCD camera (25) arranged at the bottom of the linkage slider (24), a second CCD camera (31) arranged on the inner walls on both sides of the moving frame (2), and a third CCD camera (15) arranged on the inner side of the spur rack (8); an X-axis sensing positioning light bar (17) is arranged on the top of the support frame (5), and the first CCD camera (25) cooperates with the X-axis sensing positioning light bar (17) for visual sensing positioning; Y-axis sensing positioning light bars (32) are arranged along the front-back direction on the inner walls on both sides of the moving frame (2), and the second CCD camera (31) cooperates with the Y-axis sensing positioning light bar (32) for visual sensing positioning; a Z-axis sensing positioning light bar (16) is arranged on the top side of the X-axis sensing positioning light bar (17), and the third CCD camera (15) is adapted to the Z-axis sensing positioning light bar (16).

Images