Integrally-formed optical tracking type scanner frame

Abstract

An integrally-formed optical tracking type scanner frame comprises a large annular structure and a small annular structure, the large annular structure and the small annular structure are connected through connecting beams, the outer side of the middle of each connecting beam extends to form an octagonal prism, and the surface of each octagonal prism continues to extend to form an octagonal frustum; a mounting beam is arranged at two ends of the ring of the small ring-shaped structure through a central point, and a scanner and a circuit board part are mounted on the mounting beam; marking points are completely or partially attached to the outer surface of the whole frame structure, so that more than ten non-coplanar marking points can be observed at each visual angle in the space; according to the utility model, a large number of local small planes are formed on the outer surface, and after the mark points are pasted on the small planes, more than ten non-coplanar mark points can be tracked during working no matter from any space view angle; according to the utility model, integrated molding is adopted, assembly is avoided, and the structural rigidity is improved.

Description

Technical Field

[0001] This utility model relates to the field of optical three-dimensional scanning technology, and in particular to an integrated optical tracking scanner frame, which is a scanner frame structure based on an optical marker tracking binocular stereo vision system. Background Technology

[0002] Optical tracking 3D scanning systems have the advantages of being non-contact, highly accurate, and having a wide range. They have already begun to emerge in industries such as industrial inspection, reverse engineering, and medical measurement, demonstrating their significant technological advancement.

[0003] The scanner structure of optical tracking 3D scanning systems is very complex, requiring lightweight construction and high structural rigidity. Existing solutions typically involve fabricating simple straight rods using carbon fiber technology, then bonding these rods together to form a frame. A disc-shaped metal block is attached to the outside of the frame, and the center marker is affixed to the metal block. For example, patent application CN219829785U discloses a 3D measuring instrument and a tracking 3D scanning system. The main structure of the measuring instrument is a disc-shaped structure, requiring secondary connections between multiple rods and the disc metal block. These connections are prone to loosening and deformation, leading to structural instability and reduced rigidity, and also resulting in low manual assembly efficiency. These drawbacks lead to excessively high scanner production costs and even higher maintenance costs. Furthermore, the existing structures allow for a limited number of markers to be observed by the tracker, and designing a structure capable of tracking more markers has been a persistent challenge in this field. Summary of the Invention

[0004] In order to overcome the technical shortcomings of the existing scanner frame structure, the purpose of this utility model is to provide an integrated optical tracking scanner frame, which simplifies production and assembly, improves structural rigidity, and all markers are attached to a local plane, so that more than 10 markers can be observed by the tracker from different angles.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An integrated, molded optical tracking scanner frame, comprising:

[0007] The large ring structure 2 is a hexagonal structure, wherein the distance from the center of the hexagon to the side of the hexagon is R1;

[0008] The small ring structure 1 is a hexagonal structure, wherein the distance from the center of the hexagon to the side of the hexagon is R2;

[0009] The large ring structure 2 and the small ring structure 1 are connected by a connecting beam 3. An octagonal prism 4 extends from the middle outer side of each connecting beam 3, and an octagonal frustum 5 extends from the surface of the octagonal prism 4.

[0010] A mounting beam 6 is set at both ends of the small ring structure 1 through the center point, and the scanner and circuit board are mounted on the mounting beam 6.

[0011] The surfaces of the small ring structure 1, the large ring structure 2, the connecting beam 3, the octagonal prism 4, and the octagonal frustum 5 all have local small planes, and all or part of the small planes are marked with markers, ensuring that more than 10 non-coplanar markers can be observed from each perspective in space.

[0012] The octagonal side length at the junction 7 of the octagonal frustum 5 and the octagonal prism 4 is longer, while the side length of the octagonal 8 on the other side surface is shorter.

[0013] The octagonal prism 4 can also be a quadrangular prism, pentagonal prism, hexagonal prism or heptagonal prism structure.

[0014] The small ring structure 1, the large ring structure 2, the connecting beam 3, the octagonal prism 4, the octagonal frustum 5, and the mounting beam 6 are all hollow thin-walled structures with a wall thickness of 0.1-2mm, and the materials include carbon fiber, plastic, or aluminum alloy.

[0015] The radius R1 is between 50 and 200 mm, and the side length of the hexagon is between 10 mm and 40 mm; the radius R2 is between 20 and 150 mm, and the side length of the hexagon is between 10 mm and 40 mm.

[0016] The large ring structure 2 and the small ring structure 1 are connected by 3-6 connecting beams 3. The cross-sectional shape of each connecting beam 3 is hexagonal, and the side length is between 10mm and 40mm.

[0017] All edges of the hexagons, octagonal prisms, and octagonal frustums are rounded to increase wear resistance.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] (1) All components of this utility model are integrally formed, eliminating the need for secondary assembly. It has high structural rigidity, light weight, saves labor, improves product quality, and greatly promotes the popularization and application of optical tracking scanning technology.

[0020] (2) The design of the large and small ring structures, as well as the design of the connecting beams, octagonal prisms and octagonal frustums of this utility model, ensures that when the marking points are attached to a small local plane on the outer surface of the structure, more than 10 non-coplanar marking points on the frame structure can be observed from each perspective in space.

[0021] In summary, the design of this utility model allows more than 10 marker points to be observed by the tracking device from different angles, and the integrated design simplifies production and assembly and improves structural rigidity. Attached Figure Description

[0022] Figure 1 A schematic diagram of the frame structure of this utility model. Detailed Implementation

[0023] The present invention will now be further described with reference to the accompanying drawings.

[0024] See Figure 1 An integrated, molded optical tracking scanner frame, comprising:

[0025] The large ring structure 2 is a hexagonal structure, wherein the distance from the center of the hexagon to the side of the hexagon is R1; the dimension of R1 is between 50 and 200 mm, and the side length of the hexagon is between 10 mm and 40 mm.

[0026] The small ring structure 1 is a hexagonal structure, wherein the distance from the center of the hexagon to the side of the hexagon is R2; the size of R2 is between 20 and 150 mm, and the side length of the hexagon is between 10 mm and 40 mm.

[0027] The large ring structure 2 and the small ring structure 1 are connected by 3-6 connecting beams 3. The cross-sectional shape of each connecting beam 3 is hexagonal, with a side length between 10mm and 40mm. An octagonal prism 4 extends from the middle outer side of each connecting beam 3. The octagonal prism 4 can also be a square prism, pentagonal prism, hexagonal prism or heptagonal prism structure. An octagonal frustum 5 extends further from the surface of the octagonal prism 4.

[0028] A mounting beam 6 is set at both ends of the small ring structure 1 through the center point, and the scanner and circuit board are mounted on the mounting beam 6.

[0029] The surfaces of the small ring structure 1, the large ring structure 2, the connecting beam 3, the octagonal prism 4, and the octagonal frustum 5 all have local small planes, and all or part of the small planes are attached with marking points, ensuring that more than 10 non-coplanar marking points can be observed on the frame structure from every perspective in space.

[0030] The octagonal side length at the junction 7 of the octagonal frustum 5 and the octagonal prism 4 is longer, while the side length of the octagonal 8 on the other side surface is shorter.

[0031] The small ring structure 1, large ring structure 2, connecting beam 3, octagonal prism 4, octagonal frustum 5, and mounting beam 6 are all hollow thin-walled structures with a wall thickness of 0.1-2mm, and the materials include carbon fiber, plastic, or aluminum alloy. The entire structure is integrally molded. Taking carbon fiber as an example, the manufacturing process is as follows:

[0032] (1) First, design a mold according to the above structure. The mold material is foam material or other plastics, and the shape is obtained by mechanical processing.

[0033] (2) Continuously lay carbon fiber film layer by layer on the outer surface of the mold to achieve a wall thickness of 0.1 to 2 mm;

[0034] (3) Place the carbon fiber structure into a high-temperature oven to bake until cured, then remove and cool.

[0035] (4) Drill holes in certain parts of the surface for mounting and connecting the camera and circuit board;

[0036] (5) Plastic materials can be formed using 3D printing technology.

[0037] (6) For metal materials, they can be manufactured by machining.

[0038] All edges of the hexagons, octagonal prisms, and octagonal frustums are rounded to increase wear resistance.

[0039] The working principle of this invention is as follows: The scanner and circuit board are mounted on this structure, similar to the working principle of existing optical tracking scanners. This invention features large and small rings connected by a connecting beam, with an octagonal prism extending from the connecting beam. An octagonal frustum further extends from the surface of the octagonal prism. This structure creates numerous small local planes on the outer surface. After the marker points are attached to these planes, at least 10 non-coplanar marker points can be tracked (observed) from any spatial perspective. This invention uses a one-piece molding process, avoiding assembly and improving structural rigidity.

Claims

1. A one-piece molded optical tracking scanner frame, characterized in that, include: The large ring structure (2) is a hexagonal structure, wherein the distance from the center of the hexagon to the side of the hexagon is R1; The small ring structure (1) is a hexagonal structure, wherein the distance from the center of the hexagon to the side of the hexagon is R2; The large ring structure (2) and the small ring structure (1) are connected by a connecting beam (3). An octagonal prism (4) extends from the middle outer side of each connecting beam (3), and an octagonal frustum (5) extends from the surface of the octagonal prism 4. The small ring structure (1) has a mounting beam (6) set at the center point at both ends of the ring, and the scanner and circuit board are mounted on the mounting beam (6); The surfaces of the small ring structure (1), the large ring structure (2), the connecting beam (3), the octagonal prism (4) and the octagonal frustum (5) all have local small planes, and all or part of the small planes are marked with markers to ensure that more than 10 non-coplanar markers can be observed from each perspective in space.

2. The integrated optical tracking scanner frame according to claim 1, characterized in that, The octagonal side length at the junction (7) of the octagonal frustum (5) and the octagonal prism (4) is longer, while the side length of the octagonal side (8) on the other side is shorter.

3. The integrated optical tracking scanner frame according to claim 1, characterized in that, The octagonal prism (4) can also be a quadrangular prism, pentagonal prism, hexagonal prism or heptagonal prism structure.

4. The integrated optical tracking scanner frame according to claim 1, characterized in that, The small ring structure (1), the large ring structure (2), the connecting beam (3), the octagonal prism (4), the octagonal frustum (5), and the mounting beam (6) are all hollow thin-walled structures with a wall thickness of 0.1-2 mm. The materials include carbon fiber, plastic, or aluminum alloy.

5. The integrated optical tracking scanner frame according to claim 1, characterized in that, The radius R1 is between 50 and 200 mm, and the side length of the hexagon is between 10 mm and 40 mm; the radius R2 is between 20 and 150 mm, and the side length of the hexagon is between 10 mm and 40 mm.

6. The integrated optical tracking scanner frame according to claim 1, characterized in that, The large ring structure (2) and the small ring structure (1) are connected by 3-6 connecting beams (3). The cross-sectional shape of each connecting beam (3) is hexagonal, and the side length is between 10mm and 40mm.

7. The integrated optical tracking scanner frame according to claim 1, characterized in that, All edges of the hexagons, octagonal prisms, and octagonal frustums are rounded to increase wear resistance.

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