Aero-engine blade robot laser measuring device

Abstract

The utility model belongs to laser measurement technical field especially a kind of aero-engine blade robot laser measuring equipment, for the existing aero-engine blade robot laser measuring device to ensure measurement accuracy, often the problem of sacrificing measurement speed, present the following scheme, including fixed base, the fixed base is provided with blade body, the outside of blade body is provided with bipolar measurement module, and the outside of fixed base is fixedly connected with multiple symmetrical positioning probes, the outside of fixed base is provided with mechanical arm, the outside of mounting plate is provided with two symmetrical laser heads. The aero-engine blade robot laser measuring equipment disclosed by the utility model can make the device simultaneously measure two areas of the blade body to be detected when laser measuring the blade body, improve the measurement speed while ensuring the measurement accuracy by generating two laser beams to simultaneously scan different parts of the blade.

Description

Technical Field

[0001] This utility model relates to the field of laser measurement technology, and in particular to a laser measurement device for aero-engine blade robots. Background Technology

[0002] Laser measurement of aero-engine blades is a key technology in aero-engine manufacturing and maintenance. It is mainly used for high-precision geometric dimension inspection, morphology analysis, quality control, reverse engineering and fatigue damage assessment. Its core lies in using the non-contact, high-precision and high-speed characteristics of lasers to solve the measurement problems of complex blade surfaces, high precision requirements and harsh environments.

[0003] Existing laser measurement devices typically only have one laser head, which takes a considerable amount of time to measure aero-engine blades. To ensure the measurement accuracy of the device, the only option is to control the movement speed of the laser head, which significantly impacts the measurement efficiency of the device. Utility Model Content

[0004] This utility model discloses a robotic laser measurement device for aero-engine blades, aiming to solve the technical problem in the background art where existing robotic laser measurement devices for aero-engine blades often sacrifice measurement speed in order to ensure measurement accuracy.

[0005] This utility model discloses a robotic laser measurement device for aero-engine blades, comprising a fixed base, on which a blade body is mounted. A bipolar measurement module is mounted on the outside of the blade body, and multiple symmetrical positioning probes are fixedly connected to the outside of the fixed base. A robotic arm is mounted on the outside of the fixed base, and a mounting plate is mounted on the robotic arm. A camera is mounted on the mounting plate, and two symmetrical laser heads are mounted on the outside of the mounting plate. Both laser heads are located outside the blade body, and a positioning and stabilizing module is mounted on the outside of the fixed base. The bipolar measurement module includes two symmetrical movable frames, which are fixedly connected to the opposite side of the mounting plate. A transmission plate is slidably connected to each of the two movable frames, and a ring rail is fixedly connected to the outside of each of the two transmission plates. The two laser heads are located outside the two ring rails respectively.

[0006] In a preferred embodiment, two symmetrical slide rails are fixedly connected to the side of each of the two movable frames away from the annular rail. Two symmetrical tenons are fixedly connected to each of the transmission plates, with the outer sides of the tenons slidably connected to the inner walls of the slide rails. A connecting platform is fixedly connected to the opposite side of each of the two movable frames, and a drive motor is mounted on each connecting platform. The output end of each drive motor is connected to a threaded rod via a coupling, and the end of the threaded rod away from the drive motor is movably connected to the outside of the mounting plate. Circular holes are formed on the outer sides of both transmission plates, and the inner walls of these holes are rotatably connected to the outer sides of the threaded rods on the same side via external threads. Moving seats are slidably connected to the outer sides of both annular rails, and circular grooves are formed on each moving seat. A rotary motor is fixedly connected to each groove, and the output end of each rotary motor is connected to a gear via a coupling. Gear rings are fixedly connected to the outer sides of both annular rails, and these gear rings mesh with the gears on the same side. Mounting seats are fixedly connected to the outer sides of both moving seats. Connecting... The inner walls of both the connecting ring and the connecting ring are fixedly connected to support seats. The two support seats are symmetrical to each other. The inner walls of each support seat are fixedly connected to the outside of the laser head on the same side, and each support seat is movably connected to a second push-pull plate. Each of the two push-pull plates has a slit at the end furthest from the support seat, and a short rod is movably connected within each slit. Each short rod is fixedly connected to a first push-pull plate. The end of each first push-pull plate furthest from the short rod is fixedly connected to the outside of the mounting base on the same side, and each short rod is equipped with a torsion spring. One end of each spring is fixedly connected to the outside of the first push-pull plate on the same side, and the other end is fixedly connected to the outside of the second push-pull plate on the same side. A U-shaped frame is fixedly connected to the outside of each of the two movable seats. A winding roller is movably connected to each of the U-shaped frames. A motor is fixedly connected to the outside of each of the U-shaped frames. The output end of each motor is connected to one side of the winding roller on the same side through a coupling. A steel wire rope is fixedly connected to the outside of each winding roller. The end of the steel wire rope away from the winding roller is fixedly connected to the outside of the support seat on the same side.

[0007] In a preferred embodiment, the positioning and stabilizing module includes a socket rod, the upper side of which is fixedly connected to the bottom of a fixed base. Four symmetrical limiting members are fixedly connected to the bottom of the fixed base. A common stabilizing platform is inserted into the exterior of each of the four limiting members, and the stabilizing platform has a slot. The inner wall of the slot is slidably connected to the exterior of the socket rod, and an annular groove is formed on the exterior of the socket rod. A receiving cylinder is located below the stabilizing platform. Three circumferentially equidistant clamping rods are movably connected to the bottom inner wall of the receiving cylinder. Rollers are movably connected to each clamping rod, and the exterior of each roller is in contact with the inner wall of the annular groove. Three circumferentially equidistant elastic springs are fixedly connected to the bottom inner wall of the receiving cylinder. The end of each elastic spring near the clamping rod is fixedly connected to the exterior of the clamping rod on the same side. Three circumferentially equidistant rectangular... Each of the three rectangular grooves contains a wedge-shaped block. The outer sides of the three wedge-shaped blocks are fixedly connected to the opposite side of the clamping rod on the same side. Each rectangular groove contains a sliding push block, which is slidably connected to the opposite side of the wedge-shaped block on the same side. The outer sides of the three push blocks are fixedly connected to the same sliding ring. The inner wall of the sliding ring is slidably connected to the outer side of the receiving cylinder. The outer side of the sliding ring is slidably connected to a fixed cylinder. The bottom inner wall of the fixed cylinder is fixedly connected to the bottom of the receiving cylinder. The outer side of the sliding ring is slidably connected to the inner wall of the limiting member. The bottom of the sliding ring is fixedly connected to a spring, which is located outside the receiving cylinder. The end of the spring away from the sliding ring is fixedly connected to the bottom inner wall of the fixed cylinder. The outer side of the fixed cylinder has two symmetrical cuts, and each cut contains a sliding paddle, which is fixedly connected to the opposite side of the sliding ring.

[0008] A method for robotic laser measurement of aero-engine blades, using a robotic laser measurement device for aero-engine blades as described above, includes the following steps: Step 1: After placing the blade body to be tested on the fixed base, use the positioning and stabilizing module to fix the fixed base to the device; Step 2: Start the robotic arm and camera. After the camera positions the positioning probe on the fixed base, the robotic arm sets the bipolar measurement module on the outside of the blade body and uses the bipolar measurement module and the laser head to perform zoned laser measurement on the blade body. Step 3: After the measurement is completed, record the data and remove the blade body.

[0009] In summary, this application includes the following beneficial technical effects: 1. By setting up a bipolar measurement module, this utility model enables the device to simultaneously measure two regions of the blade body when performing laser measurement on the blade body. By generating two laser beams to scan different parts of the blade at the same time, the measurement speed is improved while ensuring the measurement accuracy.

[0010] 2. The transmission plate and threaded rod divide the blade body into two detection areas. The circular rail and laser head simultaneously measure the two areas on the blade body, significantly improving measurement efficiency. The connecting ring, push-pull plate one, push-pull plate two, torsion spring, and steel wire rope can quickly adjust the distance between the laser head and the blade body. While ensuring that the laser head does not collide with the blade body, the distance between the laser head and the blade body is controlled, allowing the laser head to move in a circle around the blade body. This improves the versatility of the device for measuring blade bodies of different sizes. The circular rail and moving base enable the laser head to move in a circle, increasing the measurement speed of the device.

[0011] 3. The limiting components ensure that the fixed base will not rotate horizontally on the stabilizing platform. The clamping rod, rollers, and annular groove prevent the fixed base from moving vertically. By locking in two directions, the stability of the blade body during near-light measurement is ensured, avoiding the situation where the measurement accuracy is affected by the offset of the blade body, and improving the reliability of the measurement results. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a robotic laser measurement device for aero-engine blades proposed in this utility model; Figure 2 This is a side view of the structure of a laser measurement device for aero-engine blades proposed in this utility model. Figure 3 This is a schematic diagram of the bipolar measurement module structure of a laser measurement device for an aero-engine blade robot proposed in this utility model; Figure 4 This is a schematic diagram of the mounting plate structure of a laser measurement device for aero-engine blade robots proposed in this utility model. Figure 5 This is a schematic diagram of the moving base and connecting ring structure of a laser measurement device for aero-engine blade robots proposed in this utility model; Figure 6 This is a schematic diagram of the winding roller structure of a laser measurement device for aero-engine blade robots proposed in this utility model; Figure 7 This is a schematic diagram of the positioning and stabilization module structure of a laser measurement device for an aero-engine blade robot proposed in this utility model; Figure 8 This is a schematic diagram of the fixed cylinder structure of a robotic laser measurement device for aero-engine blades proposed in this utility model.

[0013] In the diagram: 1. Fixed base; 2. Blade body; 3. Robotic arm; 4. Mounting plate; 5. Laser head; 6. Camera; 7. Positioning probe; 8. Bipolar measurement module; 801. Movable frame; 802. Circular rail; 803. Slide rail; 804. Transmission plate; 805. Connecting platform; 806. Drive motor; 807. Threaded rod; 808. Moving base; 809. Rotating motor; 810. Gear; 811. Gear ring; 812. Mounting base; 813. Connecting ring; 814. Support base; 815. Push-pull plate 816. Push-pull plate II; 817. Torsion spring; 818. U-shaped frame; 819. Winding roller; 820. Motor; 821. Steel wire rope; 9. Positioning and stabilizing module; 901. Socket rod; 902. Annular groove; 903. Stabilizing platform; 904. Limiting component; 905. Receiving cylinder; 906. Clamping rod; 907. Elastic spring; 908. Roller; 909. Sliding ring; 910. Spring; 911. Rectangular groove; 912. Push block; 913. Wedge block; 914. Fixing cylinder; 915. Paddle. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] The laser measurement device for aero-engine blade robots disclosed in this utility model is mainly applied to scenarios where existing laser measurement devices for aero-engine blade robots often sacrifice measurement speed to ensure measurement accuracy.

[0016] Example 1: Reference Figures 1-8 A robotic laser measurement device for aero-engine blades includes a fixed base 1, a blade body 2 mounted on the fixed base 1, a bipolar measurement module 8 mounted on the outside of the blade body 2, and multiple symmetrical positioning probes 7 bolted to the outside of the fixed base 1. A robotic arm 3 is mounted on the outside of the fixed base 1, a mounting plate 4 is mounted on the robotic arm 3, a camera 6 is mounted on the mounting plate 4, and two symmetrical laser heads 5 are mounted on the outside of the mounting plate 4. Both laser heads 5 are located outside the blade body 2, and a positioning and stabilizing module 9 is mounted on the outside of the fixed base 1. The bipolar measurement module 8 includes two symmetrical movable frames 801, each bolted to the opposite side of the mounting plate 4. A transmission plate 804 is slidably connected to each of the two movable frames 801, and a ring rail 802 is bolted to the outside of each of the two transmission plates 804. The two laser heads 5 are located outside the two ring rails 802 respectively.

[0017] Specifically, the device utilizes a bipolar measurement module 8 to divide the blade body 2 into two regions for simultaneous measurement when performing laser measurement on the blade body 2. By generating two laser beams to scan different parts of the blade simultaneously, the measurement speed is improved while ensuring measurement accuracy.

[0018] Example 2: Reference Figure 3 , Figure 4 , Figure 5 and Figure 6Each of the two movable frames 801 has two symmetrical slide rails 803 bolted to the side away from the annular rail 802. Two symmetrical tenons are bolted to the transmission plate 804, with the outer sides of the tenons slidably connected to the inner walls of the slide rails 803. A connecting platform 805 is bolted to the opposite side of each of the two movable frames 801. A drive motor 806 is mounted on each connecting platform 805, and the output end of each drive motor 806 is connected to a threaded rod 807 via a coupling. The end of the threaded rod 807 away from the drive motor 806 is rotatably connected to the outer side of the mounting plate 4 via a bearing. Circular holes are provided on the outer sides of both transmission plates 804. The inner walls of the circular holes are rotatably connected to the outer sides of the threaded rods 807 on the same side via external threads. The outer sides of the two annular rails 802 are slidably connected to movable seats 808. Each movable seat 808 has a circular groove, and a rotary motor 809 is bolted into each groove. The output end of each rotary motor 809 is connected to a gear 810 via a coupling. A gear ring 811 is bolted to the outer side of each annular rail 802, and the gear ring 811 meshes with the gear 810 on the same side. Mounting seats 812 are bolted to the outer sides of each movable seat 808. Connecting rings 813 are slidably connected to the outer sides of each of the two mounting seats 812. The inner walls of the connecting rings 813... Each support base 814 is bolted to the other, and the two support bases 814 are symmetrical to each other. The inner wall of each support base 814 is bolted to the outer wall of the laser head 5 on the same side, and the outer wall of each support base 814 is rotatably connected to a push-pull plate 816 via a bearing. Each push-pull plate 816 has a notch at the end furthest from the support base 814, and a short rod is rotatably connected to each notch via a bearing. The outer wall of each short rod is bolted to a push-pull plate 815. The outer wall of each push-pull plate 815 furthest from the short rod is bolted to the outer wall of the mounting base 812 on the same side, and a torsion spring 817 is installed on the outer wall of each short rod. One end of each torsion spring 817 is connected to the outer wall of the mounting base 812 on the same side. The outer end of the push-pull plate 815 is bolted to the outside, and the other end is bolted to the outer end of the push-pull plate 816 on the same side. The outer ends of the two movable seats 808 are bolted to U-shaped frames 818. The winding rollers 819 are rotatably connected to the U-shaped frames 818 through bearings. The outer ends of the U-shaped frames 818 are bolted to motors 820. The output ends of the motors 820 are connected to one side of the winding rollers 819 on the same side through couplings. The outer ends of the winding rollers 819 are bolted to wire ropes 821. The ends of the wire ropes 821 away from the winding rollers 819 are bolted to the outer ends of the support seats 814 on the same side.

[0019] In specific application scenarios, the bipolar measurement module 8 is mainly suitable for the bipolar measurement stage in the bipolar measurement process. That is, the bipolar measurement module 8 can divide the blade body 2 into two detection areas using the transmission plate 804 and the threaded rod 807. The two areas on the blade body 2 are measured simultaneously using the annular rail 802 and the laser head 5, which significantly improves the measurement efficiency. The distance between the laser head 5 and the blade body 2 can be quickly adjusted using the connecting ring 813, the first push-pull plate 815, the second push-pull plate 816, the torsion spring 817, and the steel wire rope 821. While ensuring that the laser head 5 does not collide with the blade body 2, the distance between the blade body 2 and the laser head 5 is controlled, so that the laser head 5 can move in a circle around the blade body 2 as the center, which improves the versatility of the device for measuring blade bodies 2 of different sizes. The annular rail 802 and the moving seat 808 can make the laser head 5 move in a circle, which improves the measurement speed of the device.

[0020] Example 3: Reference Figure 7 and Figure 8The positioning and stabilizing module 9 includes a socket rod 901. The upper side of the socket rod 901 is bolted to the bottom of the fixing base 1. The bottom of the fixing base 1 is bolted with four symmetrical limiting members 904. The four limiting members 904 are connected to the same stabilizing platform 903. The stabilizing platform 903 has a slot, and the inner wall of the slot is slidably connected to the outside of the socket rod 901. The outside of the socket rod 901 has an annular groove 902. A receiving cylinder 905 is provided below the stabilizing platform 903. The bottom inner wall of the receiving cylinder 905 is connected by a shaft. The container 905 is rotatably connected to three circumferentially equidistant clamping rods 906. Each clamping rod 906 is rotatably connected to a roller 908 via bearings. The outer surfaces of the rollers 908 are in contact with the inner wall of the annular groove 902. The bottom inner wall of the receiving cylinder 905 is bolted with three circumferentially equidistant elastic springs 907. The ends of the elastic springs 907 near the clamping rods 906 are bolted to the outer surfaces of the clamping rods 906 on the same side. The inner wall of the receiving cylinder 905 has three circumferentially equidistant rectangular grooves 911. The rectangular grooves 911 contain... Each of the three wedge blocks 913 is provided; the outer sides of the three wedge blocks 913 are bolted to the opposite side of the outer side of the clamping rod 906 on the same side. Pushing blocks 912 are slidably connected within the rectangular groove 911, and the pushing blocks 912 are slidably connected to the opposite side of the wedge blocks 913 on the same side. The outer sides of the three pushing blocks 912 are bolted to the same sliding ring 909. The inner wall of the sliding ring 909 is slidably connected to the outer side of the receiving cylinder 905. A fixed cylinder 914 is slidably connected to the outer side of the sliding ring 909. The bottom of the fixed cylinder 914... The wall is bolted to the bottom of the receiving cylinder 905. The outer side of the sliding ring 909 is slidably connected to the inner wall of the limiting member 904. The bottom of the sliding ring 909 is bolted to a spring 910. The spring 910 is located outside the receiving cylinder 905. The end of the spring 910 away from the sliding ring 909 is bolted to the bottom inner wall of the fixed cylinder 914. The fixed cylinder 914 has two symmetrical cuts on its outer side. A lever 915 is slidably connected in each cut. The side of the lever 915 opposite to the sliding ring 909 is bolted to it.

[0021] In specific application scenarios, the positioning and stabilization module 9 is mainly used in the positioning and stabilization process. Specifically, the positioning and stabilization module 9 uses the limiting component 904 to ensure that the fixed seat 1 will not rotate horizontally on the stabilizing platform 903. The clamping rod 906, roller 908 and annular groove 902 can prevent the fixed seat 1 from moving vertically. Through locking in two directions, the stability of the blade body 2 during the near-light measurement process is ensured, avoiding the situation where the measurement accuracy is affected by the offset of the blade body 2, and improving the reliability of the measurement results.

[0022] Example 4: A method for robotic laser measurement of aero-engine blades, using a robotic laser measurement device for aero-engine blades as described above, includes the following steps: Step 1: After placing the blade body 2 to be tested on the fixed base 1, use the positioning and stabilizing module 9 to fix the fixed base 1 to the device. (After pushing the blade crown of the blade body 2 into the fixed base 1, insert the socket rod 901 into the stabilizing platform 903, ensuring that the limiting member 904 is in contact with the outside of the stabilizing platform 903, overcoming the elastic force of the spring 910 to press down the lever 915, causing the sliding ring 909 to drive the push block 912 to descend, releasing the lock of the push block 912 on the wedge block 913.) Under the elastic force of the elastic spring 907, the clamping rod 906 rotates outward to open. After the socket rod 901 is fully inserted into the stabilizing platform 903, the lever 915 is released, the sliding ring 909 resets, and the pushing block 912 pushes the wedge block 913, thereby causing the clamping rod 906 to overcome the elastic force of the elastic spring 907 and rotate towards the center, so that the roller 908 is embedded in the annular groove 902, completing the locking of the socket rod 901, thereby fixing the fixing seat 1 on the stabilizing platform 903. Step 2: Start the robotic arm 3 and camera 6. After the camera 6 positions the positioning probe 7 on the fixed base 1, the robotic arm 3 sets the bipolar measurement module 8 outside the blade body 2. Using the bipolar measurement module 8 and the laser head 5, the robotic arm performs zoned laser measurement on the blade body 2. (After fixing the blade body 2 in the device, the camera 6 will locate the position of the positioning probe 7 to determine the position of the blade body 2.) Start the robotic arm 3. The robotic arm 3 wraps the two annular rails 802 around the outside of the blade body 2 from top to bottom, so that the mounting plate 4 is located in the middle of the blade body 2. Start the rotating motor 809. The rotating motor 809 drives the gear 810 to rotate. Through the meshing of the gear 810 and the gear ring 811, the moving base 808 moves circumferentially on the annular rails 802 with the blade body 2 as the center. Start the motor 820. The motor 820 drives the winding roller 819 to rotate, winding the wire rope 821. The wire rope 821 pulls the support seat 814, causing the support seat 814 to overcome the torque of the torsion spring 817 and fold the push-pull plate 815 and the push-pull plate 816. This causes the support seat 814 and the connecting ring 813 connected to the support seat 814 to slide outward on the mounting seat 812, away from the blade body 2. Conversely, when the winding roller 819 rotates in the opposite direction to release the wire rope 821, the support seat 814 moves closer to the blade body 2. The radius of rotation of the support seat 814 is controlled according to the distance between the widest side of the blade body 2 and the annular rail 802, so that the laser head 5 connected to the support seat 814 rotates around the blade body 2. The laser head 5 is started, and the laser head 5 projects a laser beam onto the surface of the blade body 2. The drive motor 806 is started. The drive motor 806 drives the threaded rod 807 to rotate, causing the transmission plate 804 to drive the annular rail 802 to move vertically up and down, so that the laser head 5 completes the measurement of the blade body 2. Step 3: After the measurement is completed, record the data and remove the blade body 2.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A robotic laser measurement device for aero-engine blades, comprising a fixed base (1), characterized in that, The fixed base (1) is provided with a blade body (2), and a bipolar measurement module (8) is provided on the outside of the blade body (2). Multiple symmetrical positioning probes (7) are fixedly connected to the outside of the fixed base (1). A robotic arm (3) is provided on the outside of the fixed base (1). A mounting plate (4) is provided on the robotic arm (3). A camera (6) is provided on the mounting plate (4). Two symmetrical laser heads (5) are provided on the outside of the mounting plate (4). The laser heads (5) are located on the outside of the blade body (2). A positioning and stabilizing module (9) is provided on the outside of the fixed base (1). The bipolar measurement module (8) includes two symmetrical movable frames (801). The movable frames (801) are fixedly connected to the opposite side of the outside of the mounting plate (4). A transmission plate (804) is slidably connected on both movable frames (801). A ring rail (802) is fixedly connected to the outside of both transmission plates (804). The two laser heads (5) are located on the outside of the two ring rails (802).

2. The robotic laser measurement device for aero-engine blades according to claim 1, characterized in that, Two symmetrical slide rails (803) are fixedly connected to the side of each of the two movable frames (801) away from the annular rail (802). Two symmetrical tenons are fixedly connected to the transmission plate (804). The outer side of the tenons is slidably connected to the inner wall of the slide rail (803). A connecting platform (805) is fixedly connected to the opposite side of each of the two movable frames (801). A drive motor (806) is provided on the connecting platform (805). The output end of the drive motor (806) is connected to a threaded rod (807) through a coupling. The end of the threaded rod (807) away from the drive motor (806) is movably connected to the outside of the mounting plate (4).

3. The robotic laser measurement device for aero-engine blades according to claim 2, characterized in that, Both transmission plates (804) have circular holes on their exteriors. The inner walls of the circular holes are rotatably connected to the exterior of the threaded rod (807) on the same side via external threads. Both annular rails (802) have sliding seats (808) on their exteriors. Both seats (808) have circular grooves on their exteriors. Both grooves have rotating motors (809) fixedly connected to them. The output ends of the rotating motors (809) are connected to gears (810) via couplings. Both annular rails (802) have toothed rings (811) fixedly connected to their exteriors. Both toothed rings (811) mesh with gears (810) on the same side. Both seats (808) have mounting seats (812) fixedly connected to their exteriors.

4. The robotic laser measurement device for aero-engine blades according to claim 3, characterized in that, Both mounting bases (812) are slidably connected to the outside of a connecting ring (813), and the inner wall of the connecting ring (813) is fixedly connected to a support base (814). The two support bases (814) are symmetrical to each other. The inner wall of the support base (814) is fixedly connected to the outside of the laser head (5) on the same side, and the outside of the support base (814) is movably connected to a push-pull plate (816).

5. The robotic laser measurement device for aero-engine blades according to claim 4, characterized in that, Both of the two push-pull plates (816) have a cut at the end away from the support base (814), and a short rod is movably connected in the cut. Push-pull plate (815) is fixedly connected to the outside of the short rod. The end of push-pull plate (815) away from the short rod is fixedly connected to the outside of the mounting base (812) on the same side. A torsion spring (817) is provided on the outside of the short rod. One end of the torsion spring (817) is fixedly connected to the outside of push-pull plate (815) on the same side, and the other end is fixedly connected to the outside of push-pull plate (816) on the same side.

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