Dual laser blade edge measurement device

Abstract

The present invention provides a dual-laser blade edge measuring device, which includes: a measuring platform with a base provided below the measuring platform; a flipping mechanism, a steering mechanism, a measuring mechanism, a position adjustment mechanism, and a posture adjustment mechanism, wherein the posture adjustment mechanism is used to adjust the posture of the measuring mechanism relative to the blade. According to the present invention, the flipping mechanism, the steering mechanism, and the position adjustment mechanism cooperate to achieve multi-angle and multi-posture adjustment of the blade to be measured on the measuring platform, so that full coverage can be achieved when facing complex surfaces; wherein, a posture adjustment mechanism is provided for each measuring mechanism to adjust the posture of the two measuring mechanisms relative to the blade respectively. On the basis of the preliminary adjustment of the blade posture by the flipping mechanism, the steering mechanism, and the position adjustment mechanism, the posture of the measuring mechanism relative to the blade is further adjusted to achieve adaptive adjustment, so as to easily cope with the measurement of various complex surfaces.

Description

Technical Field

[0001] The present invention relates to the technical field of laser measurement, and in particular to a dual-laser blade edge measurement device. Background Art

[0002] The dual-laser blade edge measurement device uses laser technology to perform high-precision blade edge measurement. A laser transmitter emits two laser beams, each irradiating different parts of the blade. Distance data is acquired using the reflection properties of the laser beams and the surface. Measurement is performed at the intersection of the laser plane formed by the two laser beams and the blade edge, thereby obtaining the precise position and shape of the blade edge. However, traditional laser transmitters have difficulty covering complex surfaces. Furthermore, blades are often spatially distorted and require multi-angle measurement, making it difficult to form a laser plane. This impedes the measurement of complex blade surfaces. Therefore, a dual-laser blade edge measurement device was invented to address these issues. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the blade edge measurement device in the prior art cannot cope with the measurement of blades with complex profiles, thereby providing a dual-laser blade edge measurement device.

[0004] In order to solve the above problems, the present invention provides a dual-laser blade edge measurement device, which includes:

[0005] A measuring platform, wherein a base is provided below the measuring platform;

[0006] A turning mechanism and a steering mechanism are provided between the base and the measuring platform to respectively realize multi-directional posture and position adjustment of the measuring platform;

[0007] a measuring mechanism, wherein when the measuring platform is placed horizontally, two measuring mechanisms are vertically arranged along the radial and axial directions of the measuring platform respectively for measuring the blades on the measuring platform;

[0008] A position adjustment mechanism is provided directly above the measuring platform, and is used to adjust the position of the measuring mechanism provided along the axial direction of the measuring platform relative to the radial direction of the measuring platform;

[0009] An attitude adjustment mechanism is provided near each of the measuring mechanisms, and the attitude adjustment mechanism is used to adjust the attitude of the measuring mechanism relative to the blade;

[0010] A control device is used to control the multi-directional posture and position adjustment of the measuring platform, control the measuring mechanism to measure the blade, control the position adjustment mechanism to adjust the radial direction of the measuring platform, and control the posture adjustment mechanism to adjust the posture of each measuring mechanism relative to the blade.

[0011] Preferably, the flipping mechanism includes: a pair of side panels, which are respectively arranged vertically on both sides of the base, and the tops of the side panels are respectively provided with rotating holes, and rotating blocks are respectively provided in the rotating holes. The rotating blocks and the rotating holes are rotatably connected, and an equipment box is provided near one of the side panels, and a first motor is provided in the equipment box, and the output shaft of the first motor rotatably passes through the equipment box to connect to the rotating block near the equipment box.

[0012] Preferably, the steering mechanism includes: a rotating seat, which is arranged between a pair of rotating blocks, a second motor is arranged in the rotating seat, the second motor is arranged at the bottom center of the rotating seat, a rotating part is arranged on the top of the rotating seat, a rotating ring adapted to the rotating part is provided at the bottom of the measuring platform, and the measuring platform is rotatably connected to the rotating part through the rotating ring; the output shaft of the second motor rotates through the rotating part and is connected to the bottom center of the measuring platform.

[0013] Preferably, the position adjustment mechanism comprises: a pair of L-shaped bars and a crossbeam, wherein the horizontal ends of the pair of L-shaped bars are respectively connected to the two ends of the base, and the vertical ends of the pair of L-shaped bars extend upward and are respectively connected to the two ends of the crossbeam;

[0014] The crossbeam is provided with a sliding seat adapted to the crossbeam, a pair of slide rails are provided along the length direction of the crossbeam, and a slider is provided on each of the pair of slide rails, the sliders are slidably connected to the slide rails, and the sliders are respectively connected to the sliding seat;

[0015] A first screw is also provided along the length direction of the beam, and a pair of support seats are respectively provided at both ends of the first screw, and the first screw is rotatably connected to the support seats respectively. A first sliding block is provided on the first screw, and the first sliding block is screwed to the first screw, and the first sliding block is connected to the side close to the sliding seat. A third motor is provided on the beam close to one of the support seats, and the output shaft of the third motor is connected to the end close to the first screw.

[0016] Preferably, a sliding groove is provided along the height direction of the sliding seat, and sliding grooves are respectively provided on both side edges of the sliding groove. A first mounting plate is provided between a pair of the sliding grooves, and both sides of the first mounting plate slide in the sliding grooves relative to the height direction of the sliding seat.

[0017] A second screw is provided in the sliding groove along the height direction of the sliding seat, and the two ends of the second screw are rotatably connected to the two end walls of the sliding groove respectively. A second sliding block is provided on the second screw, and the second sliding block is screwed to the second screw. The second sliding block is connected to the side close to the first mounting plate, and a fourth motor is provided on the top of the sliding seat, and the output shaft of the fourth motor rotatably passes through the top of the sliding seat and is connected to the end close to the second screw.

[0018] Preferably, the measuring mechanism comprises: a laser emitter, wherein the laser emitter arranged along the axial direction of the measuring platform is arranged on the first mounting plate, and another laser emitter is arranged on a second mounting plate, and the second mounting plate is arranged on one of the L-shaped bars along the radial direction of the measuring platform;

[0019] The posture adjustment mechanism is provided between the first mounting plate and the second mounting plate and the laser emitters respectively.

[0020] Preferably, the posture adjustment mechanism includes: a first vertical plate, a fixed block, and a mounting seat, one end of the first vertical plate is perpendicularly arranged at one end of the first mounting plate and the second mounting plate, respectively, and a first electric cylinder is provided at the other end of the first vertical plate, the fixed end of the first electric cylinder is connected to the first vertical plate, and the telescopic end of the first electric cylinder extends to the other end of the first mounting plate and the second mounting plate, respectively;

[0021] A through hole is provided at the center of the fixed block, and an extension groove is provided at an edge of the through hole away from the end of the first vertical plate, the telescopic end of the first electric cylinder slides through the through hole and extends into the extension groove, the telescopic end of the first electric cylinder is respectively connected to a pair of first rotating bars, one end of the pair of first rotating bars is respectively rotatably connected to the telescopic end of the first electric cylinder, the other end of the pair of first rotating bars is respectively rotatably connected to a pair of second rotating bars, and one end of the pair of second rotating bars away from the first rotating bar is respectively connected to an end of the mounting base close to the fixed block;

[0022] Rotating parts are respectively provided on both sides of the fixed block, and the rotating parts are rotatably connected to connecting bars. One end of the connecting bar is rotatably connected to the rotating part, and the other end of the connecting bar is connected to a mounting seat. The laser emitter is provided on the end of the mounting seat away from the fixed block.

[0023] Preferably, the first mounting plate and the second mounting plate are respectively provided with a second electric cylinder near one of the rotating parts of the fixed block, the fixed ends of the second electric cylinder are respectively perpendicularly arranged on the first mounting plate and the second mounting plate, and the telescopic end of the second electric cylinder is rotatably connected to the rotating part of the fixed block.

[0024] Preferably, the method further comprises: a clamping mechanism, which is arranged on the measuring platform to clamp the blade, the clamping mechanism comprising: a positioning plate, the positioning plate being vertically arranged on one side edge of the measuring platform, a positioning hole being provided at the center of the positioning plate, a fifth motor being provided in the positioning hole, an output shaft of the fifth motor extending toward the center of the measuring platform, a gear being provided on the output shaft of the fifth motor, a rack being provided respectively relative to the top and bottom of the gear, one end of a pair of the racks being respectively engaged with the gears, and the other ends of the pair of the racks being respectively extended toward both ends of the positioning plate;

[0025] Two pairs of sliding rods are provided on the positioning plate on the same side as the rack, and the two pairs of sliding rods are located on both sides of the gear, a support is respectively provided at each end of the sliding rod, the support is connected to the positioning plate, and sliding blocks are respectively provided on the sliding rods, a sliding bar is provided between the sliding blocks on each pair of sliding rods, and a clamping bar is provided on each sliding bar, one end of the clamping bar is vertically connected to the sliding bar, and the other end extends away from the positioning plate and is movably connected to the clamping plate;

[0026] One end of the rack extending toward both ends of the positioning plate is vertically connected to one of the clamping bars.

[0027] Preferably, a clamping surface is provided on the side where the clamping plates are close to each other, an arcuate surface is provided on the side where the clamping strip is close to the clamping plates, a mounting portion is provided on the end of the clamping plates facing away from each other, one end of the clamping strip is rotatably connected to one end of the mounting portion, a rotating shaft is provided on the other end of the mounting portion, the rotating shaft is rotatably connected to the mounting portion, a torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring respectively abut the clamping plate and the arcuate surface.

[0028] The dual-laser blade edge measurement device provided by the present invention has the following beneficial effects:

[0029] 1. The present invention uses a flipping mechanism, a steering mechanism, and a position adjustment mechanism to coordinate and adjust the blade to be measured on the measuring platform at multiple angles and postures, ensuring full coverage of complex surfaces. A posture adjustment mechanism is provided for each measuring mechanism to adjust the posture of the two measuring mechanisms relative to the blade. Based on the initial adjustment of the blade posture by the flipping mechanism, the steering mechanism, and the position adjustment mechanism, the posture of the measuring mechanism relative to the blade is further adjusted to achieve adaptive adjustment, allowing easy measurement of various complex surfaces.

[0030] 2. The present invention also uses a first motor to drive the rotating block to rotate relative to the rotating hole, causing the rotating base to rotate about the center of the rotating hole, thereby enabling the measuring platform to be horizontal or upright, switching between vertical and horizontal modes. When the second motor is driven, the measuring platform rotates about the output shaft of the second motor as the axis, and the rotating ring of the measuring platform rotates on the rotating part of the rotating base, thereby achieving 360° horizontal rotation of the measuring platform. By switching between vertical and horizontal modes, the blade profile can be fully covered, reducing the clamping error caused by manual flipping compared to traditional single-position measurement.

[0031] 3. The present invention also utilizes a second sliding block connected to the first mounting plate, with both sides sliding within the sliding groove, to allow the first mounting plate to slide in the height direction relative to the sliding seat, thereby adjusting the height of the measuring mechanism mounted on the first mounting plate relative to the measuring platform. This allows for measurement at a wider range of locations when dealing with a variety of complex surfaces.

[0032] 4. The present invention also uses a posture adjustment mechanism to reduce the accuracy requirements for the subsequent clamping mechanism to clamp the blade. When the clamping mechanism cannot adaptively clamp and fix the blade due to the edge shape, the laser transmitter's posture is actively adjusted to compensate for the impact of clamping errors on the measurement results.

[0033] 5. The present invention also transmits power to the rack through the gear, so that the clamping plate connected to the clamping bar can center and clamp the blade placed on the measuring table, which can realize the automatic clamping of the blade, and is compatible with blades of multiple specifications, stabilize the measurement reference, reduce system errors, avoid repeated positioning of the blade on the turntable affecting the accuracy, and provide a stable and reliable physical reference for subsequent laser measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the three-dimensional structure of the final assembly of the present invention;

[0035] Figure 2 This is a schematic diagram of the installation of the slide rail structure of the present invention;

[0036] Figure 3 This is a schematic diagram of the measuring table of the present invention in a standing state;

[0037] Figure 4 This is a schematic diagram of the installation of the first electric cylinder structure of the present invention;

[0038] Figure 5 This is a schematic diagram of the installation of the second rotating bar structure of the present invention;

[0039] Figure 6 This is a schematic diagram of the installation of the first rotating bar structure of the present invention;

[0040] Figure 7 This is a schematic diagram of the gear structure installation of the present invention;

[0041] Figure 8 This is a schematic diagram of the installation of the torsion spring structure of the present invention.

[0042] The reference numerals indicate:

[0043] 1. Measuring table; 2. Base; 3. Blade; 4. Side panel; 5. Rotation hole; 6. Rotation block; 7. Equipment box; 8. Rotation seat; 9. L-shaped bar; 10. Crossbeam; 11. Sliding seat; 12. Slide rail; 13. Slider; 14. First screw; 15. Support seat; 16. Third motor; 17. Slide slot; 18. Slide slot; 19. First mounting plate; 20. Second screw; 21. Fourth motor; 22. Laser emitter; 23. Second mounting plate; 24. First vertical plate; 25. Fixing block 26. Mounting seat; 27. First electric cylinder; 28. Through hole; 29. ​​Extension groove; 30. First rotating bar; 31. Second rotating bar; 32. Rotating portion; 33. Second electric cylinder; 34. Positioning plate; 35. Fifth motor; 36. Gear; 37. Rack; 38. Sliding rod; 39. Support; 40. Sliding block; 41. Sliding bar; 42. Clamping bar; 43. Clamping plate; 44. Clamping surface; 45. Arc surface; 46. Mounting portion; 47. Rotating shaft; 48. Torsion spring; 49. Connecting bar. DETAILED DESCRIPTION

[0044] like Figure 1-8 As shown, the present invention provides a dual-laser blade edge measurement device, which includes:

[0045] A measuring platform 1, with a base 2 provided below the measuring platform 1;

[0046] A flipping mechanism and a steering mechanism are provided between the base 2 and the measuring platform 1 to respectively realize multi-directional posture and position adjustment of the measuring platform 1;

[0047] Measuring mechanism: when the measuring platform 1 is placed horizontally, two measuring mechanisms are vertically arranged along the radial and axial directions of the measuring platform 1 for measuring the blades 3 on the measuring platform 1;

[0048] A position adjustment mechanism is provided directly above the measuring platform 1, and is used to adjust the position of the measuring mechanism provided along the axial direction of the measuring platform 1 relative to the radial direction of the measuring platform 1;

[0049] An attitude adjustment mechanism is provided near each of the measuring mechanisms, and the attitude adjustment mechanism is used to adjust the attitude of the measuring mechanism relative to the blade 3;

[0050] The control device is used to control the multi-directional posture and position adjustment of the measuring platform 1, control the measuring mechanism to measure the blade 3, control the position adjustment mechanism to adjust the radial position relative to the measuring platform 1, and control the posture adjustment mechanism to adjust the posture of each measuring mechanism relative to the blade 3. Figure 1-8 As shown, a dual laser blade 3 edge measurement device, wherein the measuring table 1 is used to place the blade 3 to be measured and provide the reference plane required for measurement for the entire device; an angle encoder is set on the measuring table, which is commercially available, and the angle encoder is connected to the processor, and the processor is connected to the control device. The angle encoding data of the measuring table can be obtained through the angle encoder. The base 2 supports the entire device. The base 2 is made of low thermal expansion granite material to avoid relative position offset between the laser emitter 22 and the measuring table 1 due to thermal expansion and contraction of the base 2, thereby ensuring the stability of the spatial coordinate reference of the laser emitter 22; wherein, the turning machine The structure is used to flip the measuring platform 1, realize the measuring platform 1 to be horizontal or upright, and switch the vertical or horizontal mode of the measuring platform 1 to achieve full posture coverage of the blade 3 to be measured and eliminate the measurement blind spot; wherein, the steering mechanism is used to realize the relative 360° horizontal rotation of the measuring platform 1, and adjust it according to the position of the blade 3 to be measured to achieve full coverage of the blade 3 to be measured; wherein, the position of the measuring mechanism is based on the horizontal mode of the measuring platform 1 as the initial reference, and two measuring mechanisms are vertically arranged along the radial and axial directions of the measuring platform 1, and the measuring end of the measuring mechanism is facing the measuring platform 1, so as to achieve the upper and lower edges and front edges of the blade 3 to be measured. Full coverage data is collected for the rear edge and complex twisted surface to generate a three-dimensional point cloud corresponding to the blade 3 to be measured; wherein, the position adjustment mechanism is installed directly above the measuring platform 1, and the position adjustment mechanism adjusts the measuring mechanism installed in the axial direction of the measuring platform 1 along the radial direction of the measuring platform 1, so as to realize data collection in the length direction of the blade 3 during the measurement process; wherein, the flipping mechanism, the steering mechanism and the position adjustment mechanism cooperate to realize multi-angle and multi-posture adjustment of the blade 3 to be measured on the measuring platform 1, so that full coverage can be achieved when facing complex surfaces; wherein, the posture adjustment mechanism is respectively set for each measuring mechanism to adjust the posture of the two measuring mechanisms relative to the blade 3 respectively. On the basis of the preliminary adjustment of the posture of the blade 3 by the flipping mechanism, the steering mechanism and the position adjustment mechanism, the posture of the measuring mechanism relative to the blade 3 is further adjusted to realize adaptive adjustment, so as to easily cope with the measurement of various complex surfaces. wherein, the control device is used to control the realization of multi-directional posture and position adjustment of the measuring platform 1, control the measuring mechanism to measure the blade 3, control the position adjustment mechanism relative to the radial direction of the measuring platform 1, and control the posture adjustment mechanism to adjust the posture of each measuring mechanism relative to the blade 3 respectively.

[0051] In some embodiments, the flip mechanism includes: a pair of side panels 4, each vertically arranged on both sides of the base 2, each of the tops of the side panels 4 is provided with a rotation hole 5, each of the rotation holes 5 is provided with a rotation block 6, the rotation block 6 and the rotation hole 5 are rotatably connected, and a device box 7 is provided near one of the side panels 4, the device box 7 is provided with a first motor, and the output shaft of the first motor rotates through the device box 7 to connect to the rotation block 6 near the device box 7. Figure 1-8 As shown, the side panels 4 are perpendicular to the two side ends of the base 2, and the rotating blocks 6 of the two side panels 4 are rotatably connected through the rotating holes 5. The first motor is connected to the control device, and the state and parameters of the first motor are controlled by the control device. The first motor is commercially available. The connection between the output shaft of the first motor and the rotating block 6 can be achieved by connecting a rotating rod and the output shaft of the first motor through a coupling, and then connecting the rotating block 6 through one end of the rotating rod close to the rotating block 6. In this way, the first motor drives the connected rotating block 6 to rotate to achieve transmission.

[0052] In some embodiments, the steering mechanism includes: a rotating seat 8, the rotating seat 8 is arranged between a pair of rotating blocks 6, a second motor is arranged in the rotating seat 8, the second motor is arranged at the bottom center of the rotating seat 8, a rotating part is arranged on the top of the rotating seat 8, a rotating ring adapted to the rotating part is arranged at the bottom of the measuring platform 1, and the measuring platform 1 is rotatably connected to the rotating part through the rotating ring; the output shaft of the second motor rotates through the rotating part and is connected to the bottom center of the measuring platform 1. Figure 1-8 As shown, two rotating blocks 6 are connected to the two side ends of the rotating base 8. Since one of the rotating blocks 6 is connected to the output shaft of the first motor, the first motor drives the rotating block 6 to rotate relative to the rotating hole 5, thereby rotating the rotating base 8 about the center of the rotating hole 5, thereby realizing the horizontal or vertical rotation of the measuring platform 1, and switching the measuring platform 1 between the vertical and horizontal modes. The second motor is also commercially available and is connected to a control device. The state and parameters of the second motor are controlled by the control device. The output shaft of the second motor and the measuring platform 1 can also be connected to a rotating rod connected to the output shaft of the second motor by a coupling. The end of the rotating rod near the measuring platform 1 is then connected to the bottom center of the measuring platform 1. When the second motor is driven, the measuring platform 1 rotates about the output shaft of the second motor, causing the rotating ring of the measuring platform 1 to rotate on the rotating part of the rotating base 8, thereby realizing 360° horizontal rotation of the measuring platform 1. Corresponding adjustments are made according to the actual situation of the blade to be measured. By switching between vertical and horizontal modes, the blade profile can be fully covered, reducing the clamping error caused by manual flipping compared to traditional single-posture measurement.

[0053] In some embodiments, the position adjustment mechanism includes: a pair of L-shaped bars 9 and a crossbeam 10, wherein the horizontal ends of the pair of L-shaped bars 9 are respectively connected to the two ends of the base 2, and the vertical ends of the pair of L-shaped bars 9 extend upward and are respectively connected to the two ends of the crossbeam 10;

[0054] The crossbeam 10 is provided with a sliding seat 11 adapted to the crossbeam 10 , and a pair of slide rails 12 are provided along the length direction of the crossbeam 10 , and a slider 13 is provided on each of the pair of slide rails 12 , and the sliders 13 are slidably connected to the slide rails 12 and the sliders 13 are respectively connected to the sliding seat 11 ;

[0055] A first screw rod 14 is also provided along the length direction of the crossbeam 10. A pair of support seats 15 are provided at both ends of the first screw rod 14. The first screw rod 14 is rotatably connected to the support seats 15. A first sliding block is provided on the first screw rod 14. The first sliding block is screwed to the first screw 14. The first sliding block is connected to the side close to the sliding seat 11. A third motor 16 is provided on the crossbeam 10 close to one of the support seats 15. The output shaft of the third motor 16 is connected to the end close to the first screw rod 14. Figure 1-8 As shown, a pair of L-shaped bars 9 and a crossbeam 10 are integrated into a vertical gantry to support the position adjustment mechanism as a whole, wherein the third motor 16 is commercially available, and the third motor 16 is connected to the control device, and the state and parameters of the third motor 16 are controlled by the control device. The connection between the output shaft of the third motor 16 and the first screw 14 can be connected through a coupling, and driven by the third motor 16, so that the first screw 14 is transmitted, and the first sliding block is screwed relative to the first screw 14, so that the sliding seat 11 connected to the first sliding block changes position, and the two sliders 13 connected to the sliding seat 11 slide on the slide rail 12 and provide a guiding function, so as to realize the adjustment of the measuring mechanism installed in the axial direction of the measuring platform 1 along the radial direction of the measuring platform 1, which is used to realize data collection in the length direction of the blade 3 during the measurement process.

[0056] In some embodiments, a sliding groove 17 is provided along the height direction of the sliding seat 11, and sliding grooves 18 are provided on both side edges of the sliding groove 17. A first mounting plate 19 is provided between a pair of the sliding grooves 18, and both sides of the first mounting plate 19 slide in the sliding grooves 18 relative to the height direction of the sliding seat 11.

[0057] A second screw 20 is provided in the sliding groove 17 along the height direction of the sliding seat 11. The two ends of the second screw 20 are respectively rotatably connected to the two end walls of the sliding groove 17. A second sliding block is provided on the second screw 20. The second sliding block is screwed to the second screw 20. The second sliding block is connected to the side close to the first mounting plate 19. A fourth motor 21 is provided on the top of the sliding seat 11. The output shaft of the fourth motor 21 rotatably passes through the top of the sliding seat 11 and is connected to the end close to the second screw 20. Figure 1-8 As shown, based on the adjustment of the measuring mechanism installed in the axial direction of the measuring table 1 along the radial direction of the measuring table 1, it is further adjusted along the height direction of the sliding seat 11, wherein the fourth motor 21 is commercially available, and the fourth motor 21 is connected to the control device, and the state and parameters of the fourth motor 21 are controlled by the control device. The connection between the fourth motor 21 and the second screw 20 can be connected through a coupling, and the second sliding block and the second screw 20 are screwed together, so that when the fourth motor 21 transmits power to the second screw 20, the two sides of the first mounting plate 19 connected to the second sliding block slide in the sliding groove 18, so that the first mounting plate 19 slides in the height direction relative to the sliding seat 11, thereby adjusting the height direction of the measuring mechanism installed on the first mounting plate 19 relative to the measuring table 1. When facing a variety of complex surfaces, measurements of more positions can be achieved.

[0058] In some embodiments, the measuring mechanism includes: a laser emitter 22, the laser emitter 22 arranged along the axial direction of the measuring platform 1 is arranged on the first mounting plate 19, another laser emitter 22 is arranged on a second mounting plate 23, and the second mounting plate 23 is arranged on one of the L-shaped bars 9 along the radial direction of the measuring platform 1;

[0059] The attitude adjustment mechanism is provided between the first mounting plate 19 and the second mounting plate 23 and the laser emitter 22. Figure 1-8As shown, the laser emitter 22 is commercially available. The line laser projected by the laser emitter 22 forms a curved light strip on the surface of the blade 3. The center coordinates of the light strip are extracted through a sub-pixel edge detection algorithm (such as the grayscale centroid method and Zernike moment fitting). Then, combined with the data from the angle encoder of the measuring platform, a three-dimensional contour curve (3D point cloud) of the edge of the blade 3 is constructed. Specifically, the two laser emitters 22 are mounted on the first mounting plate 19 and the second mounting plate 23 to achieve an orthogonal dual-laser emitter layout (the vertical laser emitter is vertically downward, and the horizontal laser emitter is horizontally sideways), respectively covering the axial edge (such as the root or tip edge) and circumferential edge (such as the leading edge or trailing edge) of the blade 3. The dual laser emitters scan synchronously, and NURBS surface fitting is performed on the vertical and horizontal dual-view measurement data of the blade 3 edge to eliminate the projection distortion of a single view. An attitude adjustment mechanism is further installed between the two laser emitters 22 and the first mounting plate 19 and the second mounting plate 23 respectively to adaptively adjust the attitude of the measurement mechanism relative to the blade, further improving the measurement accuracy of complex surfaces.

[0060] In some embodiments, the posture adjustment mechanism includes: a first vertical plate 24, a fixing block 25, and a mounting seat 26, one end of the first vertical plate 24 is respectively perpendicularly arranged at one end of the first mounting plate 19 and the second mounting plate 23, and the other end of the first vertical plate 24 is provided with a first electric cylinder 27, the fixed end of the first electric cylinder 27 is connected to the first vertical plate 24, and the telescopic end of the first electric cylinder 27 extends to the other end of the first mounting plate 19 and the second mounting plate 23;

[0061] A through hole 28 is provided at the center of the fixing block 25. An extension groove 29 is provided at the edge of the through hole 28 away from the first vertical plate 24. The telescopic end of the first electric cylinder 27 slides through the through hole 28 and extends into the extension groove 29. The telescopic end of the first electric cylinder 27 is respectively connected to a pair of first rotating bars 30. One end of the pair of first rotating bars 30 is respectively rotatably connected to the telescopic end of the first electric cylinder 27. The other end of the pair of first rotating bars 30 is respectively rotatably connected to a pair of second rotating bars 31. The end of the pair of second rotating bars 31 away from the first rotating bar 30 is respectively connected to the end of the mounting base 26 close to the fixing block 25.

[0062] The fixed block 25 is provided with a rotating portion 32 on both sides, and the rotating portion 32 is rotatably connected to a connecting bar, one end of the connecting bar is rotatably connected to the rotating portion 32, and the other end of the connecting bar is connected to a mounting seat 26. The laser emitter 22 is provided at one end of the mounting seat 26 away from the fixed block 25. Figure 1-8As shown, the posture adjustment mechanism is respectively installed between the first mounting plate 19 and the second mounting plate 23 and the laser emitter 22, wherein the mounting seat 26 is provided with an assembly groove adapted to the laser emitter 22 for installing the laser emitter 22, and the connection method can be in the form of bonding, bolt connection or clamping, wherein the first vertical plate 24 is installed on the first mounting plate 19 or the second mounting plate 23, the first electric cylinder 27 and the second electric cylinder 33 are both commercially available, and are connected to the control device to realize the control of the state and parameters of the first electric cylinder 27 and the second electric cylinder 33, wherein the telescopic end of the first electric cylinder 27 slides through the through hole 28 and extends into the extension groove 29, and since the first electric cylinder 27 is connected to the first vertical plate 24, the fixed block 25 rotates with the first electric cylinder 27 as the axis, and when the first electric cylinder 27 performs telescopic movement, due to one end of the first electric cylinder 27 and the first The rotating bar 30 is rotatably connected, and the second rotating bar 31 is rotatably connected to the first rotating bar 30. The second rotating bar 31 is connected to the mounting seat 26. The connecting bars on both sides of the mounting seat 26 are rotatably connected to the rotating parts 32 on both sides of the fixed block 25. In this process, when the first electric cylinder 27 telescopic movement occurs, the telescopic end of the first electric cylinder 27, the first rotating bar 30 and the second rotating bar 31 will realize the connecting rod movement, which will cause the angle between the mounting seat 26 and the fixed block 25 to change. With the first vertical plate 24 as the opposite surface, a corresponding attitude sensor is also provided on the mounting seat 26. The attitude sensor is connected to the processor for obtaining the attitude data of the laser emitter in real time, obtaining the current attitude data of the laser emitter in real time, monitoring its attitude in real time, and providing a reference for the subsequent processing of the three-dimensional point cloud. The attitude regulator realizes the fine adjustment of the attitude of the laser emitter 22 relative to the XZ direction of the first vertical plate.

[0063] In some embodiments, the first mounting plate 19 and the second mounting plate 23 are each provided with a second electric cylinder 33 near one of the rotating portions 32 of the fixed block 25. The fixed ends of the second electric cylinder 33 are respectively perpendicularly provided on the first mounting plate 19 and the second mounting plate 23. The telescopic ends of the second electric cylinder 33 are rotatably connected to the rotating portion 32 of the fixed block 25. Figure 1-8As shown, the whole formed by the first electric cylinder 27, the second electric cylinder 33, the first vertical plate 24, the fixed block 25 and the first mounting plate 19 or the second mounting plate 23 is sufficient to support the movement of each component therein. For example, when the first electric cylinder 27 telescopes, the fixed block 25 connected to the second electric cylinder 33 is relatively fixed so that when the first electric cylinder 27 telescopes, the fixed block 25 can remain relatively stationary, thereby realizing the change of the angle of the corresponding mounting seat 26 relative to the fixed block 25; when the second electric cylinder 33 telescopes, since the second electric cylinder 33 is connected to one of the rotating parts 32, the fixed block 25 is pulled to rotate with the telescopic end of the first electric cylinder 27 as the axis. In this process, the first vertical plate 24 is used as the opposite surface to realize the fine adjustment of the attitude of the laser emitter 22 relative to the first vertical plate in the XY direction.

[0064] Specifically, the attitude adjustment mechanism can achieve fine adjustment of the attitude in the XZ and XY directions with the first vertical plate 24 as the opposite surface. On the basis of the preliminary adjustment of the attitude of the blade 3 by the flipping mechanism, the steering mechanism and the position adjustment mechanism, the attitude of the measuring mechanism relative to the blade 3 is further adjusted to achieve adaptive adjustment, so as to easily cope with the measurement of various complex surfaces; its dynamic adaptation surface normal angle, for example, when the blade has a steep surface (such as the inclination angle of the blade body of an aviation blade> 60°) or a concave deep cavity (such as the depth of the tenon groove of an engine blade> 50mm), the attitude adjustment device can adjust the pitch angle θ and the deflection angle φ of the laser emitter in real time, so that the laser optical axis is aligned with the blade 3. The surface normal of the measured point maintains the optimal triangulation angle between 45° and 60°. At the same time, it can eliminate the blind spot of collaborative measurement of dual laser transmitters. The vertical and horizontal laser transmitters can cover the shadow area under the traditional fixed layout through attitude linkage compensation (synchronous adjustment of the vertical head pitch and the horizontal head yaw). For example: when measuring the sharp edge (width ≤ 0.3mm) at the junction of the suction surface and the pressure surface of the leading edge of blade 3, the vertical head is tilted downward by 20° and the horizontal head is deflected to the left by 15° to form a cross-light strip projection. The two sets of spot coordinates are fused through the binocular vision algorithm to solve the spatial coordinates of the sharp edge (accuracy ±8μm), which reduces the blind spot compared to fixed attitude measurement.

[0065] Specifically, the posture adjustment mechanism can not only reduce the accuracy requirements for the subsequent clamping mechanism to clamp the blade 3, but also, when the clamping mechanism cannot adaptively clamp and fix the blade 3 due to the edge shape of the blade 3, the attitude of the laser emitter 22 is actively adjusted to compensate for the influence of the clamping error on the measurement result during the initial clamping.

[0066] Specifically, the attitude adjustment mechanism can actively compensate for geometric distortion. When measuring the variable-section blade body of the wind turbine blade 3, the attitude tracking adjustment is used to ensure that the projection length of the laser light strip at each measuring point is stable at the corresponding pixel value, avoiding the stretching or compression distortion of the light strip caused by the change of the surface curvature, and improving the accuracy of the contour measurement. In this process, based on the angle sensitivity of the laser triangulation method (the measurement error increases nonlinearly with the increase of the incident angle deviation, and the distance measurement error increases by 15% for every 10° deviation of the incident angle), the attitude adjustment mechanism automatically adjusts the attitude of the laser emitter 22 through the real-time feedback of the surface normal vector data of the blade 3 (fitted by the previous point cloud data or preset by the CAD model), so that the actual incident angle deviates from the theoretical optimal angle by less than ±2°, thereby reducing the distance measurement error.

[0067] Specifically, the attitude adjustment mechanism can also perform dynamic calibration of motion errors. For example, when the blade 3 itself is deformed due to gravity (such as the tip of a large-sized aviation blade droops 50-100μm when placed vertically), the attitude adjustment is used to make the laser emitter tilt slightly in the direction of blade deformation, keeping the light bar always perpendicular to the local profile of the current measurement point, and eliminating the measurement reference deviation caused by blade deformation. In this process, when the turntable rotates or the linear guide moves, the attitude adjustment device monitors the vibration of the equipment in real time (accuracy of ±0.01° / s angular velocity) through the inertial sensor installed on the measuring table. The inertial sensor is connected to the processor to obtain equipment vibration information. The control device is equipped with an inertial measurement unit (IMU) to suppress the light spot offset caused by mechanical vibration by performing vibration compensation adjustment on the attitude of the laser emitter.

[0068] In some embodiments, the present invention further includes: a clamping mechanism, which is provided on the measuring platform 1 to clamp the blade 3, and the clamping mechanism includes: a positioning plate 34, the positioning plate 34 is vertically provided on one side edge of the measuring platform 1, a positioning hole is provided in the center of the positioning plate 34, a fifth motor 35 is provided in the positioning hole, the output shaft of the fifth motor 35 extends to the center of the measuring platform 1, a gear 36 is provided on the output shaft of the fifth motor 35, and a rack 37 is provided relative to the top and bottom of the gear 36, respectively, one end of a pair of the racks 37 respectively meshes with the gear 36, and the other ends of the pair of the racks 37 respectively extend to the two ends of the positioning plate 34;

[0069] Two pairs of sliding rods 38 are provided on the positioning plate 34 on the same side as the rack 37, and the two pairs of sliding rods 38 are located on both sides of the gear 36. A support 39 is provided at each end of the sliding rod 38, and the support 39 is connected to the positioning plate 34. A sliding block 40 is provided on each sliding rod 38. A sliding bar 41 is provided between the sliding blocks 40 on each pair of sliding rods 38. Each sliding bar 41 is provided with a clamping bar 42. One end of the clamping bar 42 is vertically connected to the sliding bar 41, and the other end extends away from the positioning plate 34 and is movably connected to the clamping plate 43.

[0070] One end of the rack 37 extending toward both ends of the positioning plate 34 is vertically connected to a clamping bar 42. Figure 1-8 As shown, the positioning plate 34 is vertically mounted on one side edge of the measuring platform 1 so that the central axis of the positioning plate 34 coincides with the central axis of the measuring platform 1. The fifth motor 35 is commercially available. The fifth motor 35 is connected to a control device to control its state and parameters. The connection between the output shaft of the fifth motor 35 and the gear 36 can be first connected to a rotating rod through the output shaft of the fifth motor 35, and then connected to the center hole of the gear 36 through the rotating rod. When the fifth motor 35 is working, the transmission is transmitted to the gear 36, so that the gear 36 drives the two meshing racks 37 to synchronously move away from or close to the center of the positioning plate 34 on both sides of the relative positioning plate 34. Movement, since the rack 37 is connected to the clamping bar 42, the clamping bar 42 is connected to the sliding bar 41, and the two ends of the sliding bar 41 are connected to the sliding blocks 40 on each pair of sliding rods, the sliding blocks 40 slide on the sliding rods, thereby transmitting the power to the rack 37 through the gear 36, so that the clamping plate 43 connected to the clamping bar 42 can center and clamp the blade 3 placed on the measuring table 1, which can realize the automatic clamping of the blade 3, and is compatible with blades 3 of multiple specifications, stabilize the measurement benchmark, reduce system errors, avoid repeated positioning of the blade 3 on the turntable to affect the accuracy, and provide a stable and reliable physical benchmark for subsequent laser measurement.

[0071] In some embodiments, a clamping surface 44 is provided on the side where the clamping plates 43 are close to each other, a curved surface 45 is provided on the side where the clamping strip 42 is close to the clamping plates 43, a mounting portion 46 is provided on one end of the clamping plates 43 that are away from each other, one end of the clamping strip 42 is rotatably connected to one end of the mounting portion, and a rotating shaft 47 is provided on the other end of the mounting portion, the rotating shaft 47 is rotatably connected to the mounting portion, and a torsion spring 48 is sleeved on the rotating shaft 47, with both ends of the torsion spring 48 respectively abutting between the clamping plates 43 and the curved surface 45. Figure 1-8As shown, the clamping surface 44 of the clamping plate 43 is provided with an elastic cushion layer, which can increase flexible contact and reduce clamping stress. At the same time, the arc surface 45 provided can make the angle between the clamping plate 43 and the clamping bar 42 adjustable. When facing a blade 3 with a complex surface, when the angle or curvature of its edge cannot meet the clamping of two parallel clamping plates 43, the torsion spring 48 is provided to abut between the clamping plate 43 and the arc surface 45, and the rotation connection between the clamping plate 43 and the clamping bar 42 is used as the axis to realize the adjustment of the angle between the clamping plate 43 and the clamping bar 42. It can achieve adaptive adjustment, while ensuring high-precision alignment of the blade 3, eliminating the deformation and stress caused by the clamping force, improving the clamping efficiency and compatibility, and providing a stable and reliable physical benchmark for subsequent laser measurement.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. Double laser blade edge measurement device, characterized in that, include: A measuring platform (1), wherein a base (2) is provided below the measuring platform (1); A turning mechanism and a steering mechanism are arranged between the base (2) and the measuring platform (1) to respectively realize multi-directional posture and position adjustment of the measuring platform (1); A measuring mechanism, wherein when the measuring platform (1) is placed horizontally, two measuring mechanisms are vertically arranged along the radial and axial directions of the measuring platform (1) for measuring the blades (3) on the measuring platform (1), and the measuring mechanism comprises: a laser emitter (22); A position adjustment mechanism is arranged directly above the measuring platform (1), and is used to adjust the position of the measuring mechanism arranged along the axial direction of the measuring platform (1) relative to the radial direction of the measuring platform (1); An attitude adjustment mechanism is provided adjacent to each of the measuring mechanisms, and the attitude adjustment mechanism is used to adjust the attitude of the measuring mechanism relative to the blade (3); A control device, the control device being used to control and implement multi-directional attitude and position adjustment of the measuring platform (1), control the measuring mechanism to measure the blade (3), control the position adjustment mechanism to adjust the radial position relative to the measuring platform (1), and control the attitude adjustment mechanism to adjust the attitude of each measuring mechanism relative to the blade (3); The posture adjustment mechanism comprises: a first vertical plate (24), a fixing block (25) and a mounting seat (26); a first electric cylinder (27) is provided at the other end of the first vertical plate (24); A through hole (28) is provided at the center of the fixed block (25), and an extension groove (29) is provided at an edge of one end of the through hole (28) away from the first vertical plate (24); the telescopic end of the first electric cylinder (27) slides through the through hole (28) and extends into the extension groove (29); the telescopic end of the first electric cylinder (27) is respectively connected to a pair of first rotating bars (30), one end of the pair of first rotating bars (30) is respectively rotatably connected to the telescopic end of the first electric cylinder (27), and the other end of the pair of first rotating bars (30) is respectively rotatably connected to a pair of second rotating bars (31), and one end of the pair of second rotating bars (31) away from the first rotating bar (30) is respectively connected to one end of the mounting seat (26) close to the fixed block (25); Rotating parts (32) are respectively provided on both sides of the fixed block (25), and the rotating parts (32) are respectively rotatably connected to connecting bars (49), one end of the connecting bar (49) is respectively rotatably connected to the rotating part (32), and the other end of the connecting bar (49) is respectively connected to a mounting seat (26), and the laser emitter (22) is provided at one end of the mounting seat (26) away from the fixed block (25).

2. The dual laser blade edge measurement device according to claim 1, characterized in that: The flip mechanism comprises: a pair of side panels (4) respectively arranged vertically on both sides of the base (2); the tops of the side panels (4) are respectively provided with rotation holes (5); the rotation holes (5) are respectively provided with rotation blocks (6); the rotation blocks (6) and the rotation holes (5) are rotationally connected; a device box (7) is provided near one of the side panels (4); a first motor is provided in the device box (7); the output shaft of the first motor rotationally passes through the device box (7) and is connected to the rotation block (6) near the device box (7).

3. The dual laser blade edge measurement device according to claim 2, characterized in that: The steering mechanism comprises: a rotating seat (8), the rotating seat (8) is arranged between a pair of rotating blocks (6), a second motor is arranged in the rotating seat (8), the second motor is arranged at the bottom center of the rotating seat (8), a rotating part is arranged on the top of the rotating seat (8), a rotating ring adapted to the rotating part is arranged at the bottom of the measuring platform (1), and the measuring platform (1) is rotatably connected to the rotating part through the rotating ring; the output shaft of the second motor rotates through the rotating part and is connected to the bottom center of the measuring platform (1).

4. The dual laser blade edge measurement device according to claim 1, characterized in that: The position adjustment mechanism comprises: a pair of L-shaped bars (9) and a crossbeam (10), wherein the horizontal ends of the pair of L-shaped bars (9) are respectively connected to the two ends of the base (2), and the vertical ends of the pair of L-shaped bars (9) are respectively extended upward and respectively connected to the two ends of the crossbeam (10); The crossbeam (10) is provided with a sliding seat (11) adapted to the crossbeam (10), a pair of slide rails (12) are provided along the length direction of the crossbeam (10), and a slider (13) is respectively provided on the pair of slide rails (12), the sliders (13) and the slide rails (12) are slidably connected, and the sliders (13) are respectively connected to the sliding seat (11); A first screw rod (14) is also provided along the length direction of the cross beam (10), and a pair of support seats (15) are respectively provided at both ends of the first screw rod (14), and the first screw rod (14) is rotatably connected to the support seats (15). A first sliding block is provided on the first screw rod (14), and the first sliding block is screwed to the first screw rod (14). The first sliding block is connected to the side close to the sliding seat (11), and a third motor (16) is provided on the cross beam (10) close to one of the support seats (15), and the output shaft of the third motor (16) is connected to the end close to the first screw rod (14).

5. The dual laser blade edge measurement device according to claim 4, characterized in that: A sliding groove (17) is provided along the height direction of the sliding seat (11), and sliding grooves (18) are respectively provided on both side edges of the sliding groove (17). A first mounting plate (19) is provided between a pair of the sliding grooves (18), and both sides of the first mounting plate (19) slide in the sliding grooves (18) relative to the height direction of the sliding seat (11); A second screw rod (20) is provided in the sliding groove (17) along the height direction of the sliding seat (11), and the two ends of the second screw rod (20) are rotatably connected to the two end walls of the sliding groove (17) respectively. A second sliding block is provided on the second screw rod (20), and the second sliding block and the second screw rod (20) are screwed together. The second sliding block is connected to the side close to the first mounting plate (19). A fourth motor (21) is provided on the top of the sliding seat (11), and the output shaft of the fourth motor (21) rotatably passes through the top of the sliding seat (11) and is connected to the end close to the second screw rod (20).

6. The dual laser blade edge measurement device according to claim 5, characterized in that: The measuring mechanism comprises: a laser emitter (22), wherein the laser emitter (22) arranged along the axial direction of the measuring platform (1) is arranged on the first mounting plate (19), and another laser emitter (22) is arranged on a second mounting plate (23), and the second mounting plate (23) is arranged on one of the L-shaped bars (9) along the radial direction of the measuring platform (1); The posture adjustment mechanism is provided between the first mounting plate (19) and the second mounting plate (23) and the laser emitter (22) respectively.

7. The dual laser blade edge measurement device according to claim 6, characterized in that: One end of the first vertical plate (24) is vertically arranged on one end of the first mounting plate (19) / the second mounting plate (23), the fixed end of the first electric cylinder (27) is connected to the first vertical plate (24), and the telescopic end of the first electric cylinder (27) extends toward the other end of the first mounting plate (19) / the second mounting plate (23).

8. The dual laser blade edge measurement device according to claim 7, characterized in that: A second electric cylinder (33) is respectively provided on one of the rotating parts (32) of the fixed block (25) of the first mounting plate (19) and the second mounting plate (23); the fixed ends of the second electric cylinder (33) are respectively vertically arranged on the first mounting plate (19) and the second mounting plate (23); and the telescopic ends of the second electric cylinder (33) are rotatably connected to the rotating part (32) of the fixed block (25).

9. The dual laser blade edge measurement device according to claim 1, characterized in that: It also includes: a clamping mechanism, which is arranged on the measuring platform (1) to clamp the blade (3), and the clamping mechanism includes: a positioning plate (34), the positioning plate (34) is vertically arranged on one side edge of the measuring platform (1), a positioning hole is provided at the center of the positioning plate (34), a fifth motor (35) is provided in the positioning hole, the output shaft of the fifth motor (35) extends to the center of the measuring platform (1), a gear (36) is provided on the output shaft of the fifth motor (35), and a rack (37) is provided at the top and bottom of the gear (36), respectively, one end of a pair of the racks (37) is respectively engaged with the gear (36), and the other end of the pair of the racks (37) is respectively extended to the two ends of the positioning plate (34); Two pairs of sliding rods (38) are provided on the positioning plate (34) on the same side as the rack (37), and the two pairs of sliding rods (38) are located on both sides of the gear (36), and a support (39) is provided at each end of the sliding rod (38), and the support (39) is connected to the positioning plate (34), and a sliding block (40) is provided on each sliding rod (38), and a sliding bar (41) is provided between the sliding blocks (40) on each pair of sliding rods (38), and a clamping bar (42) is provided on each sliding bar (41), and one end of the clamping bar (42) is vertically connected to the sliding bar (41), and the other end extends away from the positioning plate (34) and is movably connected to the clamping plate (43); One end of the rack (37) extending toward both ends of the positioning plate (34) is vertically connected to a clamping bar (42) respectively.

10. The dual laser blade edge measurement device according to claim 9, characterized in that: A clamping surface (44) is provided on the side where the clamping plates (43) are close to each other, and an arcuate surface (45) is provided on the side where the clamping strip (42) is close to the clamping plate (43). A mounting portion (46) is provided on the end of the clamping plates (43) that are away from each other. One end of the clamping strip (42) and one end of the mounting portion (46) are rotatably connected, and a rotating shaft (47) is provided on the other end of the mounting portion (46). The rotating shaft (47) and the mounting portion (46) are rotatably connected. A torsion spring (48) is sleeved on the rotating shaft (47), and the two ends of the torsion spring (48) respectively abut against the clamping plate (43) and the arcuate surface (45).

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