Frame style scanning fixture based on automated non-contact inspection equipment

Abstract

The utility model discloses a frame type scanning clamp based on automatic non -contact detection equipment, including the adapter flange, the top both sides of adapter flange are installed with support frame, the top of both sides support frame all is installed with the lock board, both sides lock board's top both sides are installed with the frame, and the perimeter of frame is equipped with a plurality of thread holes, and the matching screw rod is installed in the thread hole, and the one side of screw rod is installed with the twist block, and the other side of screw rod is installed with TPU elastic sleeve, and the middle position fixed mounting of screw rod has twelve -sided reflective sphere, and each surface of twelve -sided reflective sphere is equipped with high -precision reflective mark point, and the one side of TPU elastic sleeve in frame is installed with the anti -type seat.

Description

Technical Field

[0001] This utility model belongs to the field of precision machinery manufacturing technology, specifically relating to a frame-type scanning fixture based on automated non-contact testing equipment. Background Technology

[0002] In the field of industrial inspection, especially in the 3D scanning inspection of large-sized and irregularly shaped workpieces such as aerospace large structural components, new energy vehicle battery boxes, and wind turbine blade segments, the performance of the fixture directly determines the inspection accuracy and efficiency. However, all existing fixtures have significant defects and are difficult to meet the needs of automated non-contact inspection.

[0003] Magnetic clamps, limited by their working principle, can only hold ferromagnetic workpieces. They are completely unsuitable for non-metallic materials such as plastics and ceramics, severely limiting their applicability. Vise-type clamps rely on planar clamping structures, making it difficult to achieve stable fixation on curved or irregularly shaped workpieces. Furthermore, their closed clamping method easily obstructs the scanner's detection light path, leading to blind spots. While vacuum chucks can achieve non-contact clamping, they have strict requirements on the workpiece surface, only achieving effective adhesion on smooth, sealed surfaces. They are ineffective on porous or rough materials, and their operation is energy-intensive and susceptible to external vibrations. Adsorption failure is a problem. The contouring fixture adopts a one-to-one customized design, which requires individual processing and adaptation for workpieces of different specifications and shapes. The changeover cost is extremely high and it cannot meet the inspection needs of a variety of workpieces. Flexible grippers have insufficient clamping force and are prone to shaking when clamping large workpieces, which directly affects the accuracy of scanning data. Traditional mechanical clamps can usually only fix the bottom or one side of the workpiece and cannot achieve multi-face synchronous clamping. The workpiece position needs to be repeatedly adjusted during scanning, which is not only cumbersome but also accumulates splicing errors. The end effector of the robotic arm occupies the scanner's working space, restricts the movement path of the robotic arm, and significantly reduces the inspection efficiency.

[0004] Furthermore, when inspecting large or irregularly shaped workpieces, traditional fixtures rely on the characteristics of regular surfaces for fixation, which makes the workpieces prone to shaking due to centrifugal force when the turntable rotates at high speed, resulting in distorted scanning data. Enclosed fixture structures can severely obstruct the scanning light path, requiring frequent adjustments to the workpiece's position to cover characteristic areas such as cavities and sides, leading to low efficiency and accumulated splicing errors. Moreover, during scanning and inspection, it is necessary to spray developer or attach markers to the workpiece surface, which not only damages the precision surface but also increases the complexity of operation. Therefore, there is an urgent need for a frame-type scanning fixture based on automated non-contact inspection equipment to solve the above problems. Utility Model Content

[0005] In view of the problems mentioned above in the background technology, the purpose of this utility model is to provide a frame-type scanning fixture based on an automated non-contact inspection device.

[0006] To achieve the above technical objectives, the technical solution adopted by this utility model is as follows: A frame-type scanning fixture based on an automated non-contact inspection device includes an adapter flange. Support frames are mounted on both sides of the top of the adapter flange. Locking plates are mounted on the top of each support frame. Frames are mounted on both sides of the top of the locking plates. Several threaded holes are provided around the perimeter of each frame. Matching screws are installed in the threaded holes. A torsion block is mounted on one side of each screw, and a TPU elastic sleeve is mounted on the other side. A twelve-sided reflective ball is fixedly mounted in the middle of the screw. Each of the twelve reflective balls has a high-precision reflective marking point. A protective seat is mounted inside the frame on the side corresponding to the TPU elastic sleeve.

[0007] Furthermore, an auxiliary support is installed within the frame. The auxiliary support has a cross-shaped structure and also has several threaded holes. This structural design facilitates the clamping, scanning, and inspection of small workpieces.

[0008] Furthermore, the threaded holes are evenly arranged on the frame and auxiliary support, with equal spacing between two adjacent threaded holes. This structural design facilitates the installation and use of the screw.

[0009] Furthermore, several quick-release latches are installed between the two support frames, and these quick-release latches are evenly installed on the outer side of the support frames. This structural design facilitates the connection, installation, disassembly, and separation of the support frames on both sides.

[0010] Furthermore, the bottom of the frame is secured to the lock plate with screws, and the protective base is secured to the frame and auxiliary bracket with screws. This structural design facilitates fixed installation and use, as well as convenient disassembly.

[0011] The beneficial effects of this utility model are as follows: This invention, through its open frame and multi-directional flexible locking unit composed of a screw, TPU elastic sleeve, and anti-formation seat, can simultaneously clamp workpieces from multiple angles including top, side, and bottom. This effectively eliminates the shaking caused by centrifugal force when large-sized or irregularly shaped workpieces rotate at high speed on the turntable, ensuring zero workpiece offset and avoiding scanning data distortion. Furthermore, the open frame prevents the turntable from obstructing the scanning path. Combined with the scanner, it enables scanning without blind spots, eliminating the need for frequent adjustments to the workpiece's posture, significantly improving detection efficiency, and reducing the accumulation of splicing errors. Moreover, the twelve reflective spheres provide permanent spatial reference points for the scanner, replacing the traditional workpiece surface affixing and powder spraying processes, achieving zero-contact positioning. This avoids damage to the surface of precision workpieces and eliminates pre-processing steps. It can adapt to workpieces of different specifications and shapes without customized processing, significantly reducing changeover costs and solving the problem that traditional contouring fixtures cannot meet the diverse testing needs of different products. Attached Figure Description

[0012] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the axial structure of a frame-type scanning fixture based on an automated non-contact detection device according to an embodiment of this utility model; Figure 2 This is an enlarged structural diagram of point A of the frame-type scanning fixture based on an automated non-contact detection device according to an embodiment of this utility model; Figure 3 This is an enlarged structural diagram of point B of the frame-type scanning fixture based on an automated non-contact detection device according to an embodiment of this utility model; The symbols for the main components are explained below: 1. Adapter flange; 2. Support frame; 3. Locking plate; 4. Frame; 5. Threaded hole; 6. Screw; 7. Torsion block; 8. TPU elastic sleeve; 9. Twelve-sided reflective ball; 10. Anti-shaping seat; 11. Auxiliary bracket; 12. Quick-release lock. Detailed Implementation

[0013] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Example 1, as Figure 1 , Figure 2 and Figure 3As shown, a frame-type scanning fixture based on an automated non-contact detection device has support frames 2 installed on both sides of the top of the adapter flange 1. Locking plates 3 are installed on the top of both sides of the support frames 2. Frames 4 are installed on both sides of the top of the locking plates 3. Several threaded holes 5 are provided around the perimeter of the frame 4. Matching screws 6 are installed in the threaded holes 5. A torsion block 7 is installed on one side of the screw 6. A TPU elastic sleeve 8 is installed on the other side of the screw 6. A twelve-sided reflective ball 9 is fixedly installed in the middle of the screw 6. Each side of the twelve-sided reflective ball 9 is provided with a high-precision reflective marking point. Anti-type seat 10 is installed on the side of the frame 4 corresponding to the TPU elastic sleeve 8.

[0015] In this embodiment, during installation, the bottom of the support frame 2 is first installed on the adapter flange 1. After ensuring it is placed horizontally, it is tightened from the bottom using hand-tightening screws to form a stable base. Similarly, the locking plate 3 is fixedly installed on the top of the support frame 2. Then, the frame 4 is tightened onto the locking plate 3 with screws. Afterward, according to the shape of the workpiece, the screw 6 is inserted into the threaded holes 5 (top, side, bottom) in different directions of the frame 4. The screw 6 is rotated by the torsion block 7, causing the screw 6 to rotate and move along the threaded holes 5, while simultaneously pushing the TPU elastic sleeve 8 towards the workpiece. The screwing depth is limited to the TPU elastic sleeve 8 contacting the workpiece surface without causing damage. The TPU elastic sleeve 8 must completely fit the workpiece surface to avoid hard contact that could cause scratches or deformation, thereby fixing the workpiece on the anti-corrosion seat 10. During rotational installation, ensure that the twelve reflective balls 9 installed in the middle of each screw 6 face the main detection direction of the scanner, and that the markings on each of the twelve reflective balls 9 do not obstruct each other. Finally, move the assembled fixture to the center of the turntable and lock it to the turntable through the adapter flange 1 to ensure no deviation during high-speed rotation.

[0016] The height of the support frame 2 is selected according to actual usage requirements to ensure that the bottom of the clamped workpiece is higher than the surface of the turntable, providing the scanner with a bottom-up light path penetration space.

[0017] Among them, frame 4 is connected end to end by hexagonal steel components through preset interfaces to form an open grid frame that covers the outer contour of the workpiece to be measured.

[0018] Before testing, a scanning path test is performed. The scanner preview mode is activated to observe the recognition status of the twelve reflective balls 9 and whether the frame 4 blocks the light path. If necessary, the position of the screw 6 is finely adjusted.

[0019] When disassembly is required, loosen the turntable fixing screws, move the entire fixture out of the turntable area, loosen all screws 6 in the opposite direction, and remove the workpiece. The frame 4 can be directly disassembled or the frame 4 can be retained for the next use. Through the synergistic design of the modular frame 4 and multi-directional flexible locking, large-size workpieces can be quickly installed, swept, and disassembled, solving the problems of severe obstruction and cumbersome adjustment of traditional fixtures.

[0020] Example 2, as Figure 1 As shown, this embodiment adds the following structure to the embodiment 1: an auxiliary bracket 11 is installed inside the frame 4. The auxiliary bracket 11 is arranged in a cross shape and is also provided with several threaded holes 5.

[0021] In this embodiment, during use, by setting the auxiliary bracket 11, small workpieces can be clamped and installed. The screw 6 is inserted into the threaded hole 5 of the auxiliary bracket 11, and the screw 6 is rotated and moved along the threaded hole 5, while simultaneously pushing the TPU elastic sleeve 8 to move towards the workpiece for clamping. Alternatively, the anti-corrosion seat 10 can be locked and installed on the auxiliary bracket 11, and the workpiece can be clamped and fixed by rotating the screw 6 on the frame 4.

[0022] Example 3, as Figure 1 As shown, this embodiment adds the following structure to the embodiment 1: a number of threaded holes 5 are evenly arranged on the frame 4 and the auxiliary support 11, wherein the spacing between two adjacent threaded holes 5 is equal.

[0023] In this embodiment, the uniform and equally spaced threaded holes 5 layout breaks the limitation of fixed installation points, providing a variety of choices for the assembly of subsequent components, and enabling the load generated by the assembled components to be evenly transferred to various areas of the frame 4 and auxiliary support 11, avoiding excessive local stress due to concentrated installation points, and preventing structural deformation, cracks and other problems.

[0024] Example 4, as Figure 1 As shown, this embodiment adds the following structure to the embodiment 1: several quick-release buckles 12 are installed between the two side support frames 2, and the several quick-release buckles 12 are evenly installed on the outside of the support frame 2.

[0025] In this embodiment, during installation, the quick-release latch 12 can quickly connect and fix the two support frames 2 to form a whole, which can fix the workpieces of different specifications.

[0026] Example 5, as Figure 1 As shown, this embodiment adds the following structure to the embodiment 1: the bottom of the frame 4 is locked onto the lock plate 3 by screws, and the anti-corrosion seat 10 is locked onto the frame 4 and the auxiliary bracket 11 by screws.

[0027] In this embodiment, the frame 4 and the anti-slip base 10, which are locked with screws, can be quickly installed or disassembled, making the operation simple.

[0028] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A frame-type scanning fixture based on an automated non-contact inspection device, comprising an adapter flange (1), characterized in that: Support frames (2) are installed on both sides of the top of the adapter flange (1). Locking plates (3) are installed on the top of both sides of the support frames (2). Frames (4) are installed on both sides of the top of the locking plates (3). Several threaded holes (5) are provided around the perimeter of the frame (4). Matching screws (6) are installed in the threaded holes (5). Torsion blocks (7) are installed on one side of the screws (6). TPU elastic sleeves (8) are installed on the other side of the screws (6). Twelve reflective balls (9) are fixedly installed in the middle of the screws (6). Each face of the twelve reflective balls (9) is provided with high-precision reflective marking points. Anti-type seats (10) are installed on the side of the frame (4) corresponding to the TPU elastic sleeves (8).

2. The frame-type scanning fixture based on an automated non-contact inspection device according to claim 1, characterized in that: An auxiliary bracket (11) is installed inside the frame (4). The auxiliary bracket (11) is arranged in a cross shape and is also provided with several threaded holes (5).

3. The frame-type scanning fixture based on an automated non-contact inspection device according to claim 2, characterized in that: A number of threaded holes (5) are evenly arranged on the frame (4) and the auxiliary support (11), wherein the spacing between two adjacent threaded holes (5) is equal.

4. The frame-type scanning fixture based on an automated non-contact inspection device according to claim 3, characterized in that: Several quick-release buckles (12) are installed between the two sides of the support frame (2), and the quick-release buckles (12) are evenly installed on the outside of the support frame (2).

5. The frame-type scanning fixture based on an automated non-contact inspection device according to claim 4, characterized in that: The bottom of the frame (4) is locked onto the lock plate (3) by screws, and the anti-type seat (10) is locked onto the frame (4) and the auxiliary bracket (11) by screws.

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