Laser scanning curved surface measuring device

Abstract

The utility model relates to the technical field of laser scanning, and discloses a laser scanning curved surface measuring device which comprises a base, the top of the base is fixedly connected with a supporting frame, the left end and the right end of the lower middle portion of the inner side of the supporting frame are both rotationally connected with rotating columns, and the adjacent ends of the two rotating columns are both fixedly connected with hollow plates. Rotating rods are rotationally connected to the tops of the two hollow plates, the bottom ends of the two rotating rods penetrate through the corresponding hollow plates and are fixedly connected with worms, transmission rods are rotationally connected to the middles of the inner sides of the two hollow plates, and worm wheels are fixedly connected to the middles of the outer sides of the two transmission rods. According to the utility model, the racks on the two sides drive the clamping plates to move through the sliding plates, an object to be measured can be fixed, at the moment, the motor can drive the rotating column to rotate through the transmission effect of the driving bevel gear and the driven bevel gear, the hollow plate drives the object to be measured to rotate, and continuous measurement can be carried out on different areas of the object to be measured.

Description

Technical Field

[0001] This utility model relates to the field of laser scanning technology, and in particular to a laser scanning surface measurement device. Background Technology

[0002] Surface measurement, as a high-precision, non-contact measurement method, has been widely used in many fields such as manufacturing, product design, aerospace and biomedicine in recent years. Surface measurement is not just a simple depiction of the surface of an object, but can deeply analyze and quantify the three-dimensional morphology of complex surfaces, providing accurate data support for design, manufacturing and quality control.

[0003] As modern manufacturing rapidly develops towards higher precision, higher efficiency, and greater complexity, the requirements for the processing accuracy and quality control of various complex curved surface parts are becoming increasingly stringent. Traditional measurement methods are gradually revealing many limitations when facing complex curved surfaces, making it difficult to quickly, accurately, and comprehensively obtain detailed data information of the curved surface. At this time, a laser scanning curved surface measurement device is needed to quickly scan the target curved surface and efficiently collect massive amounts of cloud point data.

[0004] Currently available laser scanning surface measurement devices mainly consist of a frame, a laser emitter, a receiver, and a control system. In operation, the laser emitter emits a laser beam, which is reflected back from the object and received by the receiver. The control system then performs 3D modeling, establishing surface point clouds. However, in practical use, when the surface object is large, it is inconvenient to measure it entirely at once. Multiple measurements are required, followed by stitching together. During these multiple measurements and stitching processes, the device is prone to decreased measurement accuracy due to stitching errors. To address this issue, existing technologies often employ movable laser emitters to continuously scan different positions on the surface. However, this method is inconvenient for moving the surface object during measurement, making it difficult to scan all directions of the surface, thus reducing the device's practicality and failing to meet user needs. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a laser scanning surface measurement device, which aims to improve the problem that existing laser scanning surface measurement devices are inconvenient for continuous scanning of different orientations of the surface.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a laser scanning curved surface measuring device, comprising a base, a support frame fixedly connected to the top of the base, rotating columns rotatably connected to the lower inner side of the support frame at both ends, hollow plates fixedly connected to adjacent ends of the two rotating columns, rotating rods rotatably connected to the top of the two hollow plates, worm gears fixedly connected to the bottom ends of the two rotating rods through the corresponding hollow plates, transmission rods rotatably connected to the middle inner side of the two hollow plates, worm wheels fixedly connected to the middle outer side of the two transmission rods, the two worm wheels meshing with the corresponding worm gears, flat gears fixedly connected to the outer walls of the two transmission rods on opposite sides, and racks slidably connected to the upper and lower inner ends of the two hollow plates, and multiple... The racks are respectively meshed with corresponding spur gears. Through slots are provided on the upper and lower parts of adjacent sides of the two hollow plates. Sliding plates are slidably connected inside the through slots. The rear ends of the sliding plates are fixedly connected to the corresponding racks. Clamping plates are fixedly connected to the front ends of the sliding plates. A hollow shell is slidably connected to the outer side of the left rotating column. The left side of the hollow shell is fixedly connected to the inner left end of the support frame. A motor is fixedly connected to the rear side of the hollow shell. The front end of the motor passes through the hollow shell and is fixedly connected to a driving bevel gear. A driven bevel gear is fixedly connected to the left side of the outer wall of the left rotating column. The driven bevel gear meshes with the driving bevel gear. A lifting mechanism is provided at the top of the inner part of the support frame. The lifting mechanism is used to improve the measurement accuracy of the device.

[0007] As a further description of the above technical solution:

[0008] The lifting mechanism includes an L-shaped plate, which is fixedly connected to the upper right side of the support frame. A motor is fixedly connected to the left side of the L-shaped plate. A groove is provided at the top inner side of the support frame. The output end of the motor passes through the support frame and is fixedly connected to a bidirectional threaded rod. The outer walls of the bidirectional threaded rod are threaded with first movable clips on both the left and right sides. The inner sides of the two first movable clips are rotatably connected to connecting plates. The bottoms of the two connecting plates are rotatably connected to second movable clips. The bottoms of the two second movable clips are fixedly connected to the same mounting plate.

[0009] As a further description of the above technical solution:

[0010] Both rotating rods are fixedly connected to knobs at their top ends, and the inner dimensions of the through groove match the dimensions of the sliding plate.

[0011] As a further description of the above technical solution:

[0012] A sliding seat is slidably connected to the inner side of the mounting plate, and a laser scanning probe is fixedly connected to the bottom of the sliding seat.

[0013] As a further description of the above technical solution:

[0014] Both of the first movable cards are fixedly connected to sliders on their front and back sides. The grooves are provided with sliding grooves on their front and back sides, and the two sliding grooves are slidably connected to the corresponding sliders.

[0015] As a further description of the above technical solution:

[0016] Each of the multiple clamping plates has a clamping claw rotatably connected to its upper and lower ends on one side, and a rubber pad is rotatably connected to the upper and lower sides of the interior of each of the multiple clamping claws.

[0017] As a further description of the above technical solution:

[0018] The base has fixing plates fixedly connected to the bottom left and right ends and the front and back sides, and the top of each fixing plate has a hole.

[0019] As a further description of the above technical solution:

[0020] A controller is fixedly connected to the upper front part of the base, and the controller is electrically connected to the motor and the electric motor respectively.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the rotating rod can drive the spur gear to rotate through the transmission action of the worm gear and worm. At this time, the racks on both sides drive the clamping plate to move through the sliding plate, which can fix the object to be measured. At this time, the motor can drive the rotating column to rotate through the transmission action of the driving bevel gear and the driven bevel gear. The hollow plate then drives the object to be measured to rotate, which can continuously measure different areas of it, improve the practicality of the device and meet the needs of users.

[0023] 2. In this utility model, the motor drives the bidirectional threaded rod to rotate, and the first movable cards on both sides will move accordingly. When the first movable cards move, they can drive the second movable cards to move through the connecting plate. At this time, the mounting plate drives the laser scanning probe to move. This allows the height of the laser scanning probe to be automatically and accurately adjusted so that it always maintains the same height as the measured point, thereby improving the measurement accuracy of the device. Attached Figure Description

[0024] Figure 1 This is a perspective view of a laser scanning surface measuring device proposed in this utility model;

[0025] Figure 2 This is a partial structural schematic diagram of a laser scanning surface measuring device proposed in this utility model;

[0026] Figure 3 This is a cross-sectional view of a hollow plate structure of a laser scanning curved surface measuring device proposed in this utility model;

[0027] Figure 4 This is a cross-sectional view of the hollow shell structure of a laser scanning surface measuring device proposed in this utility model;

[0028] Figure 5 This is a partial structural cross-sectional view of a laser scanning surface measuring device proposed in this utility model;

[0029] Figure 6 This is a schematic diagram of the lifting mechanism of a laser scanning curved surface measuring device proposed in this utility model.

[0030] Legend:

[0031] 1. Base; 2. Lifting mechanism; 201. L-shaped plate; 202. Motor; 203. Bidirectional threaded rod; 204. First movable clip; 205. Connecting plate; 206. Second movable clip; 207. Mounting plate; 208. Groove; 3. Support frame; 4. Rotating column; 5. Hollow plate; 6. Rotating rod; 7. Worm gear; 8. Transmission rod; 9. Worm wheel; 10. Flat gear; 11. Rack; 12. Through slot; 13. Sliding plate; 14. Clamping plate; 15. Hollow shell; 16. Driven bevel gear; 17. Motor; 18. Driving bevel gear; 19. Knob; 20. Sliding seat; 21. Laser scanning probe; 22. Slider; 23. Slide groove; 24. Gripper; 25. Rubber pad; 26. Fixing plate; 27. Hole; 28. Controller. Detailed Implementation

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0033] Reference Figure 2 , Figure 3 and Figure 4This utility model provides an embodiment of a laser scanning curved surface measuring device, comprising a base 1, a support frame 3 fixedly connected to the top of the base 1, rotating columns 4 rotatably connected to the lower left and right ends of the inner side of the support frame 3, hollow plates 5 fixedly connected to adjacent ends of the two rotating columns 4, and the rotation of the rotating columns 4 causing the hollow plates 5 to rotate. Rotating rods 6 rotatably connected to the top of the two hollow plates 5, and worm gears 7 fixedly connected to the bottom ends of the two rotating rods 6 through the corresponding hollow plates 5, causing the worm gears 7 to rotate when the rotating rods 6 rotate. The inner middle of the two hollow plates 5... A transmission rod 8 is rotatably connected to each of the two transmission rods 8. A worm gear 9 is fixedly connected to the middle of the outer side of each transmission rod 8. Each worm gear 9 meshes with a corresponding worm 7. When the worm 7 rotates, the worm gear 9 drives the transmission rod 8 to rotate. A spur gear 10 is fixedly connected to the outer wall of each of the two transmission rods 8 on opposite sides. Rotation of the transmission rod 8 drives the spur gear 10 to rotate. Racks 11 are slidably connected to the upper and lower ends of the interior of each of the two hollow plates 5. Multiple racks 11 mesh with corresponding spur gears 10. When the spur gear 10 rotates, the racks 11 on both sides move accordingly. Each adjacent side has through slots 12 on both the top and bottom. Sliding plates 13 are slidably connected inside each through slot 12. The rear ends of each sliding plate 13 are fixedly connected to corresponding racks 11. Clamping plates 14 are fixedly connected to the front ends of each sliding plate 13. When the rack 11 moves, it can move the clamping plates 14 via the sliding plates 13, thus fixing the object to be measured. A hollow shell 15 is slidably connected to the outer side of the left rotating column 4. The left side of the hollow shell 15 is fixedly connected to the left end of the support frame 3. A motor 17 is fixedly connected to the rear side of the hollow shell 15, with the front end of the motor 17 penetrating the hollow shell. The housing 15 is fixedly connected to the driving bevel gear 18. When the motor 17 starts, it will drive the driving bevel gear 18 to rotate. The left side of the outer wall of the left rotating column 4 is fixedly connected to the driven bevel gear 16. The driven bevel gear 16 meshes with the driving bevel gear 18. When the driving bevel gear 18 rotates, the driven bevel gear 16 will drive the rotating column 4 to rotate. The top of the support frame 3 is provided with a lifting mechanism 2. The lifting mechanism 2 is used to improve the measurement accuracy of the device. The top of the two rotating rods 6 are fixedly connected to the knobs 19. The inner size of the through groove 12 matches the size of the sliding plate 13.

[0034] Reference Figure 1 , Figure 5 and Figure 6The lifting mechanism 2 includes an L-shaped plate 201, which is fixedly connected to the upper right side of the support frame 3. A motor 202 is fixedly connected to the left side of the L-shaped plate 201. A groove 208 is provided at the top inner side of the support frame 3. The output end of the motor 202 passes through the support frame 3 and is fixedly connected to a bidirectional threaded rod 203. When the motor 202 starts, it drives the bidirectional threaded rod 203 to rotate. The left and right sides of the outer wall of the bidirectional threaded rod 203 are threaded with first movable clips 204. When the bidirectional threaded rod 203 rotates, the first movable clips 204 will move accordingly. The inner side of 04 is rotatably connected to a connecting plate 205. The movement of the first movable card 204 will drive the connecting plate 205 to move. The bottom of the two connecting plates 205 is rotatably connected to a second movable card 206. The bottom of the two second movable cards 206 is fixedly connected to the same mounting plate 207. When the connecting plate 205 moves, it can drive the mounting plate 207 to move through the second movable card 206. The inner side of the mounting plate 207 is slidably connected to a sliding seat 20. The bottom of the sliding seat 20 is fixedly connected to a laser scanning probe 21. The laser scanning probe 21 can perform measurement work on the object to be measured.

[0035] Reference Figure 2 and Figure 5 Both the front and rear sides of the two first movable cards 204 are fixedly connected to sliders 22. The front and rear sides of the groove 208 are provided with sliding grooves 23. The two sliding grooves 23 are slidably connected to the corresponding sliders 22. The sliding grooves 23 and sliders 22 can limit the first movable cards 204 so that they can move correctly along the direction of the bidirectional threaded rod 203. The upper and lower ends of one side of the multiple clamping plates 14 are rotatably connected to grippers 24. The upper and lower sides of the multiple grippers 24 are rotatably connected to rubber pads 25. The rotatable grippers 24 and rubber pads 25 can clamp irregularly shaped objects.

[0036] Reference Figure 1 , Figure 4 and Figure 5 The base 1 has fixing plates 26 fixedly connected to the bottom left and right ends and front and back sides. The top of each fixing plate 26 has a hole 27. The fixing plates 26 can be fixed to the ground with screws through the holes 27, thereby fixing the device. The upper front part of the base 1 has a controller 28 fixedly connected to it. The controller 28 is electrically connected to the motor 17 and the motor 202 respectively. The controller 28 can control the operation of the motor 17 and the motor 202 respectively. The model of the motor 17 is F130 micro and the model of the motor 202 is MS8012.

[0037] Working principle: When using this device, the object to be measured needs to be fixed first. Then, turn the knob 19. The rotation of the knob 19 will drive the worm 7 to rotate through the rotating rod 6. Since the worm wheel 9 meshes with the worm 7, the worm wheel 9 can drive the spur gear 10 to rotate through the transmission rod 8. When the spur gear 10 rotates, the racks 11 on both sides will move towards the middle. The movement of the racks 11 can drive the clamping plate 14 to move towards the middle through the sliding plate 13, thus fixing the object to be measured. At this time, the motor 17 starts and drives the driving bevel gear 18 to rotate. Since the driven bevel gear 16 meshes with the driving bevel gear 18, the driven bevel gear 16 will drive the rotating column 4 to rotate. The hollow plate 5 will then drive the object to be measured to rotate, enabling automatic scanning and measurement of the object in different directions.

[0038] Furthermore, when using this device, the motor 202 starts and drives the bidirectional threaded rod 203 to rotate. When the bidirectional threaded rod 203 rotates, the first movable clips 204 on both sides are limited by the sliding groove 23 and the slider 22. At this time, the first movable clips 204 on both sides will move accordingly. When the first movable clips 204 move, they can drive the second movable clip 206 to move through the connecting plate 205. The second movable clip 206 can then drive the mounting plate 207 to move. At this time, the height of the laser scanning probe 21 can be automatically and accurately adjusted so that it always maintains the same height as the measured point, making the measurement work more accurate.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser scanning curved surface measuring device, comprising a base (1), characterized in that: The base (1) is fixedly connected to a support frame (3) at its top. Rotating columns (4) are rotatably connected to the lower inner side of the support frame (3) at both ends. Hollow plates (5) are fixedly connected to the adjacent ends of the two rotating columns (4). Rotating rods (6) are rotatably connected to the top of the two hollow plates (5). The bottom ends of the two rotating rods (6) penetrate the corresponding hollow plates (5) and are fixedly connected to worm gears (7). Transmission rods (8) are rotatably connected to the middle inner side of the two hollow plates (5). Worm wheels (9) are fixedly connected to the middle outer side of the two transmission rods (8). The two worm wheels (9) are respectively meshed with the corresponding worm gears (7). A spur gear (10) is fixedly connected to the outer wall of the two transmission rods (8) on the side away from each other. Racks (11) are slidably connected to the upper and lower inner ends of the two hollow plates (5). Multiple racks (11) are respectively meshed with the corresponding spur gears (10). The adjacent sides of the two hollow plates (5) are fixedly connected to the worm gears (7). A through slot (12) is provided on both the upper and lower parts of one side. A sliding plate (13) is slidably connected inside the through slot (12). The rear ends of the sliding plates (13) are fixedly connected to the corresponding racks (11). A clamping plate (14) is fixedly connected to the front ends of the sliding plates (13). A hollow shell (15) is slidably connected to the outer side of the rotating column (4) on the left side. The left side of the hollow shell (15) is fixedly connected to the left end of the support frame (3). A motor (17) is fixedly connected to the rear side of the hollow shell (15). The front end of the motor (17) passes through the hollow shell (15) and is fixedly connected to the driving bevel gear (18). A driven bevel gear (16) is fixedly connected to the left side of the outer wall of the rotating column (4) on the left side. The driven bevel gear (16) meshes with the driving bevel gear (18). A lifting mechanism (2) is provided at the top of the support frame (3). The lifting mechanism (2) is used to improve the measurement accuracy of the device.

2. The laser scanning curved surface measuring device according to claim 1, characterized in that: The lifting mechanism (2) includes an L-shaped plate (201), which is fixedly connected to the upper right side of the support frame (3). A motor (202) is fixedly connected to the left side of the L-shaped plate (201). A groove (208) is provided at the top inner side of the support frame (3). The output end of the motor (202) passes through the support frame (3) and is fixedly connected to a bidirectional threaded rod (203). The outer walls of the bidirectional threaded rod (203) are threaded with first movable clips (204) on both the left and right sides. The inner sides of the two first movable clips (204) are rotatably connected to connecting plates (205). The bottoms of the two connecting plates (205) are rotatably connected to second movable clips (206). The bottoms of the two second movable clips (206) are fixedly connected to the same mounting plate (207).

3. The laser scanning curved surface measuring device according to claim 1, characterized in that: The top ends of the two rotating rods (6) are fixedly connected to knobs (19), and the inner dimensions of the through groove (12) match the dimensions of the sliding plate (13).

4. The laser scanning curved surface measuring device according to claim 2, characterized in that: The mounting plate (207) has a sliding seat (20) slidably connected to its inner side, and a laser scanning probe (21) is fixedly connected to the bottom of the sliding seat (20).

5. The laser scanning curved surface measuring device according to claim 2, characterized in that: The front and rear sides of the two first movable cards (204) are fixedly connected with sliders (22), and the front and rear sides of the groove (208) are provided with sliding grooves (23), and the interior of the two sliding grooves (23) are slidably connected to the corresponding sliders (22).

6. The laser scanning curved surface measuring device according to claim 1, characterized in that: Each of the multiple clamping plates (14) has a clamping claw (24) rotatably connected to the upper and lower ends on one side, and a rubber pad (25) rotatably connected to the upper and lower sides inside the multiple clamping claws (24).

7. The laser scanning curved surface measuring device according to claim 1, characterized in that: The base (1) has fixed plates (26) fixedly connected to the bottom left and right ends and front and back sides, and the top of each of the fixed plates (26) has holes (27).

8. The laser scanning curved surface measuring device according to claim 1, characterized in that: A controller (28) is fixedly connected to the upper front side of the base (1), and the controller (28) is electrically connected to the motor (17) and the motor (202) respectively.

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