Tilt adjustment platform

Abstract

The present application relates to the technical field of optical system, and especially relates to a tilt adjustment platform, which comprises a base, a rotating assembly, a bearing table, a first knob and a second knob. The rotating assembly comprises a mounting part, a first part, a second part and a third part which are connected in sequence. The bearing table is arranged on one side of the base and is fixed with the third part. The first end of the first knob and the first end of the second knob are both hemispherical. The first end of the first knob is movable along a first direction relative to the base. The first end of the second knob is movable along a second direction relative to the base. The rotating shafts between the mounting part and the first part, between the first part and the second part and between the second part and the third part are not coplanar and intersect at an axis. The rotating center of an object to be adjusted placed on the bearing table coincides with the axis. The present application is at least beneficial to improve the accuracy of tilt adjustment.

Description

Technical Field

[0001] This invention belongs to the field of optical system technology, and in particular relates to a tilt adjustment platform. Background Technology

[0002] When assembling and adjusting an optical system, an adjustment platform is needed to precisely adjust the spatial position and orientation of the optical components. Existing adjustment platforms typically use multiple single-degree-of-freedom linear and angular displacement stages stacked together to achieve multi-degree-of-freedom adjustment of the optical components.

[0003] When adjusting the translational degrees of freedom of optical elements using a linear displacement stage, the adjustments between each translational degree of freedom are decoupled and do not affect each other. Therefore, adjusting multiple translational degrees of freedom does not introduce additional parasitic displacements. However, when using angular displacement stages for tilt adjustment, since the rotation axis of each angular displacement stage and the vertex of the optical surface usually do not coincide, such as... Figure 1 As shown, when the vertex of the optical surface deviates from the rotation axis of the tilt adjustment, the optical element will not only tilt during adjustment but also experience an additional linear displacement L, leading to reduced assembly accuracy and efficiency. Furthermore, the angular displacement stage in related technologies uses an arc-shaped guide rail as the guiding element. Friction, hysteresis, and gaps inevitably occur during the guide rail's movement, further negatively impacting the assembly accuracy of the optical element. The combination of multiple angular displacement stages also results in a larger and heavier adjustment platform, making it inconvenient to use. Summary of the Invention

[0004] In view of this, the present invention aims to provide a tilt adjustment platform, which at least helps to improve the accuracy of tilt adjustment.

[0005] To achieve the above objectives, the technical solution created by this invention is implemented as follows: This invention provides a tilt adjustment platform, comprising: a base; a rotating assembly, the rotating assembly including a mounting part, a first part, a second part, and a third part connected in sequence, wherein the mounting part is connected to the first part, the first part to the second part, and the second part to the third part by corresponding single-axis symmetrical circular flexible hinges, and the mounting part is fixed to the base; a support platform, the support platform is disposed on one side of the base and is fixed to the third part, and the support platform is spaced apart from the base, the mounting part, the first part, and the second part; a first knob and a second knob disposed on the base, the first end of the first knob and the first end of the second knob abutting different sides of the support platform, and both the first end of the first knob and the first end of the second knob are hemispherical, the first end of the first knob is movable relative to the base along a first direction, and the first end of the second knob is movable relative to the base along a second direction, the first direction being perpendicular to the second direction; wherein the rotation axis between the mounting part and the first part, the rotation axis between the first part and the second part, and the rotation axis between the second part and the third part are not coplanar but intersect at the axis center, and the rotation center of the component to be adjusted placed on the support platform coincides with the axis center.

[0006] Furthermore, the base has a through hole that extends through the base along its thickness direction. The rotating component is disposed within the through hole, and the mounting part, the first part, the second part, and the third part are connected sequentially along the circumference of the through hole.

[0007] Furthermore, the top surface height of the mounting section, the top surface height of the first part, the top surface height of the second part, and the top surface height of the base are all lower than the top surface height of the third part. The support platform is set on one side of the top surface of the base, and the support platform is fixed to the top surface of the third part.

[0008] Furthermore, the axis is located on the side of the support platform away from the base.

[0009] Furthermore, the overall structure composed of the first part, the second part, and the third part is in the shape of a truncated triangular prism. The extension direction of the mounting part is the same as that of the first part, and the mounting part has multiple first mounting holes. The through hole includes a main hole and a sliding groove hole that are connected. The main hole is a truncated triangular prism hole. The mounting part is set in the sliding groove hole and contacts the base. The base has multiple second mounting holes that are connected to the sliding groove hole, and the second mounting holes are aligned with the corresponding first mounting holes. The mounting part is fixed in the sliding groove hole by using a mounting component that passes through the second mounting holes and the first mounting holes.

[0010] Furthermore, the third part is shaped like a triangular frustum, and the side of the third part away from the support platform has a hollow area.

[0011] Furthermore, the base has a first bend on one side in the first direction, a third mounting hole at the end of the first bend away from the base, and the end of the first bend away from the base extends toward one side of the support platform in the first direction. A first knob is disposed in the third mounting hole and is movable relative to the first bend in the first direction. The base has a second bend on one side in the second direction, a fourth mounting hole at the end of the second bend away from the base, and the end of the second bend away from the base extends toward one side of the support platform in the second direction. A second knob is disposed in the fourth mounting hole and is movable relative to the second bend in the second direction.

[0012] Furthermore, the base has a first groove on the edge adjacent to the first bend, and the tilt adjustment platform also includes a first pre-tightening component. The first pre-tightening component is disposed in the first groove, and one end of the first pre-tightening component is fixed to the first bend, while the other end of the first pre-tightening component is fixed to the support platform. The first pre-tightening component applies a pre-tightening force parallel to the first direction between the support platform and the first bend. The base has a second groove on the edge adjacent to the second bend, and the tilt adjustment platform also includes a second pre-tightening component. The second pre-tightening component is disposed in the second groove, and one end of the second pre-tightening component is fixed to the second bend, while the other end of the second pre-tightening component is fixed to the support platform. The second pre-tightening component applies a pre-tightening force parallel to the second direction between the support platform and the second bend.

[0013] Furthermore, the first preload assembly includes a first stud, a first spring, and a second stud. The first end of the first stud is connected to the first end of the first spring, and the second end of the first stud is screwed into the first bend along the thickness direction of the support platform. The first end of the second stud is connected to the second end of the first spring, and the second end of the second stud is screwed into the support platform along the thickness direction of the support platform. The first spring extends in a first direction. The second preload assembly includes a third stud, a second spring, and a fourth stud. The first end of the third stud is connected to the first end of the second spring, and the second end of the third stud is screwed into the second bend along the thickness direction of the support platform. The first end of the fourth stud is connected to the second end of the second spring, and the second end of the fourth stud is screwed into the support platform along the thickness direction of the support platform. The second spring extends in a second direction.

[0014] Furthermore, the tilt adjustment platform also includes a tooling frame, through which the part to be adjusted is placed on the support platform.

[0015] Compared with the prior art, the present invention can achieve the following beneficial effects: The base and the support platform in the tilt adjustment platform provided by the present invention are connected by a rotating assembly. In the rotating assembly, the mounting part and the first part, the first part and the second part, and the second part and the third part are all connected by corresponding single-axis symmetrical circular flexible hinges. The rotation axes between the mounting part and the first part, the rotation axes between the first part and the second part, and the rotation axes between the second part and the third part are not coplanar and intersect at the axis. When the tilting part to be adjusted is tilted, the preset rotation center of the part to be adjusted is set at a position coinciding with the axis. Thus, when the hemispherical end of the first knob moves in the first direction to apply a force to the support platform, the support platform will rotate relative to the base under the action of the hemispherical end of the first knob. The rotation axis of the support platform is perpendicular to the first direction and passes through the axis. If the first axis of rotation is used, the component to be adjusted on the support platform will also rotate around the first axis of rotation to achieve a tilt adjustment of one degree of freedom. Similarly, if the hemispherical end of the second knob moves in the second direction to apply force to the support platform, the support platform will rotate relative to the base under the action of the hemispherical end of the second knob. The axis of rotation of the support platform is the second axis of rotation, which is perpendicular to the second direction and passes through the axis. The component to be adjusted on the support platform will also rotate around the second axis of rotation to achieve a tilt adjustment of another degree of freedom. The tilt adjustment of the two degrees of freedom is combined to achieve tilt adjustment in multiple directions. The tilt adjustment in each direction always ensures that the rotation center of the component to be adjusted is located at the axis of the rotating component. That is, the rotation center of the component to be adjusted is always stable in a fixed position. In this way, no additional linear displacement will be generated in any tilt adjustment, which is beneficial to improving the accuracy of tilt adjustment and thus improving the assembly and adjustment efficiency.

[0016] In addition, compared with using multiple stacked angular displacement stages, the present invention can achieve tilt adjustment in multiple directions by using the base, rotating components and bearing platform together, which helps to reduce the size and weight of the adjustment platform. Furthermore, since each rotation axis of the rotating component is realized through flexible hinges, there is no friction, no lag and no gap effect during the tilt adjustment process, which helps to further improve the adjustment accuracy. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram showing the linear displacement of an optical element during tilt adjustment. Figure 2 A schematic diagram of the tilt adjustment platform described in the embodiment of the present invention; Figure 3This is a schematic diagram of the structure of the tilt adjustment platform when the support platform is removed, as described in an embodiment of the present invention. Figure 4 An exploded view of the tilt adjustment platform described in the embodiment of the present invention; Figure 5 A schematic diagram of the structure of the rotating assembly described in the embodiment of the present invention; Figure 6 A cross-sectional view of the tilt adjustment platform described in an embodiment of the present invention; Figure 7 Another cross-sectional view of the tilt adjustment platform described in the embodiment of the present invention; Figure 8 Another structural schematic diagram of the tilt adjustment platform described in the embodiment of the present invention; Figure 9 A side view of the tilt adjustment platform described in an embodiment of the present invention from one perspective; Figure 10 A side view of the tilt adjustment platform described in an embodiment of the present invention from another perspective; Figure 11 This is a schematic diagram of the rotating component described in an embodiment of the present invention from another perspective.

[0018] Explanation of reference numerals in the attached drawings: 1. Base; 3. Rotating assembly; 30. Mounting part; 31. First part; 32. Second part; 33. Third part; 2. Support platform; 5. First knob; 4. Second knob; O. Shaft; 12. Part to be adjusted; 10. Through hole; 101. Main hole; 102. Slide hole; 34. Hollow area; 8. First bending part; 9. Second bending part; 7. First pre-tightening assembly; 6. Second pre-tightening assembly; 71. First stud; 73. First spring; 72. Second stud; 61. Third stud; 63. Second spring; 62. Fourth stud; 11. Tooling frame. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute a limitation thereof.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] refer to Figures 2 to 11This invention provides a tilt adjustment platform, comprising: a base 1; a rotating assembly 3, which includes a mounting part 30, a first part 31, a second part 32, and a third part 33 connected in sequence, wherein the mounting part 30 is connected to the first part 31, the first part 31 to the second part 32, and the second part 32 to the third part 33 by corresponding single-axis symmetrical circular flexible hinges, and the mounting part 30 is fixed to the base 1; and a support platform 2, which is disposed on one side of the base 1 and fixed to the third part 33, wherein there are gaps between the support platform 2 and the base 1, between the support platform 2 and the mounting part 30, between the support platform 2 and the first part 31, and between the support platform 2 and the second part 32. Distance; a first knob 5 and a second knob 4 are set on the base 1, the first end of the first knob 5 and the first end of the second knob 4 abut against different sides of the support platform 2, and the first end of the first knob 5 and the first end of the second knob 4 are both hemispherical. The first end of the first knob 5 is movable relative to the base 1 along a first direction, and the first end of the second knob 4 is movable relative to the base 1 along a second direction. The first direction is perpendicular to the second direction. Among them, the rotation axis between the mounting part 30 and the first part 31, the rotation axis between the first part 31 and the second part 32, and the rotation axis between the second part 32 and the third part 33 are not coplanar and intersect at the axis center O. The rotation center of the adjustment part 12 placed on the support platform 2 coincides with the axis center O.

[0025] In other words, the rotating assembly 3 is composed of three non-orthogonal, single-degree-of-freedom flexible rotary joints connected in series. The rotation axes of the three flexible joints in the rotating assembly 3 are arranged in a conical shape and intersect at a point. The intersection of the rotation axes of the three flexible joints is the axis O of the rotating assembly 3. Thus, the third part 33 can rotate relative to the mounting part 30 around the axis O, thereby allowing the support platform 2 to rotate relative to the base 1 around the axis O. The first direction is perpendicular to the second direction. Thus, when the hemispherical end of the first knob 5 moves along the first direction to apply a force to the support platform 2, the support platform 2 will rotate relative to the base 1 around the first axis under the push of the first knob 5. Rotation: The first axis of rotation is the Y-axis shown in the figure. The Y-axis is parallel to the top surface of the support platform 2. The first axis of rotation is parallel to the second direction and passes through the axis O. At the same time, the first axis of rotation is also perpendicular to the normal direction of the top surface of the support platform 2, which is the Z-axis direction shown in the figure. When the hemispherical end of the second knob 4 moves along the second direction to apply force to the support platform 2, the support platform 2 will rotate relative to the base 1 around the second axis of rotation under the push of the second knob 4. The second axis of rotation is the X-axis shown in the figure. The X-axis is parallel to the top surface of the support platform 2. The second axis of rotation is parallel to the first direction and passes through the axis O. At the same time, the second axis of rotation is also perpendicular to the normal direction of the top surface of the support platform 2.

[0026] Furthermore, the base 1 has a through hole 10 that extends through the base 1 along the thickness direction. The rotating component 3 is disposed in the through hole 10. The mounting part 30, the first part 31, the second part 32, and the third part 33 are connected sequentially along the circumference of the through hole 10.

[0027] Furthermore, the top surface height of the mounting section 30, the top surface height of the first part 31, the top surface height of the second part 32, and the top surface height of the base 1 are all lower than the top surface height of the third part 33. The support platform 2 is located on one side of the top surface of the base 1, and the support platform 2 is fixed to the top surface of the third part 33. In this way, it can be ensured that the support platform 2 is connected to the third part 33, and that the support platform 2 has a distance from the base 1 and the remaining three parts of the rotating assembly 3, thereby reserving space for the tilting of the support platform 2.

[0028] Furthermore, the axis O is located on the side of the support platform 2 away from the base 1. In this way, when the part to be adjusted 12 is placed on the support platform 2, the preset rotation center of the part to be adjusted 12 can be made to coincide with the axis O. Thus, when tilting is adjusted, the tilt amount of the part to be adjusted 12 relative to the rotation center can be precisely controlled without causing additional linear displacement.

[0029] Furthermore, the overall structure composed of the first part 31, the second part 32, and the third part 33 is in the shape of a truncated triangular prism. The extension direction of the mounting part 30 is the same as the extension direction of the first part 31, and the mounting part 30 has a plurality of first mounting holes. The through hole 10 includes a main hole 101 and a sliding hole 102 that are connected. The main hole 101 is a truncated triangular prism hole. The mounting part 30 is disposed in the sliding hole 102 and contacts the base 1. The first part 31, the second part 32, and the third part 33 are disposed in the main hole 101. The base 1 has a plurality of second mounting holes that are connected to the sliding hole 102, and the second mounting holes are aligned with the corresponding first mounting holes. The mounting part 30 is fixed in the sliding hole 102 by using a mounting component that passes through the second mounting holes and the first mounting holes. The advantage of this design is that after the rotating component 3 is assembled into the base 1, except for the third part 33 which is higher than the height of the base 1, the remaining rotating components 3 are all embedded in the base 1, which avoids the rotating components 3 affecting the overall shape of the base 1. This facilitates the assembly of the base 1 with other linear displacement stages. When assembling the rotating component 3 into the base 1, the mounting part 30 of the rotating component 3 can be aligned with the slide hole 102 from below the base 1, and the entire rotating component 3 can be pushed into the through hole 10. Then, the mounting parts are used to fix the rotating component 3 and the base 1, making the assembly and disassembly between the rotating component 3 and the base 1 relatively simple and reducing the difficulty of disassembly and maintenance.

[0030] In some embodiments, the mounting element may be a screw.

[0031] In some embodiments, the components of the rotating assembly 3 are integrally formed.

[0032] In some embodiments, the rotating component 3 can also be integrally formed with the base 1, that is, the rotating component 3 can be directly machined into the base 1.

[0033] Furthermore, the third part 33 has a triangular frustum shape, and the side of the third part 33 away from the support platform 2 has a hollow region 34. The triangular frustum shape makes the top surface area of ​​the third part 33 larger, which allows for surface-to-surface contact between the third part 33 and the support platform 2. Surface-to-surface contact helps improve the connection stability between the third part 33 and the support platform 2, thereby improving the tilt adjustment accuracy. The hollow region 34 helps reduce the weight of the rotating component 3, ensuring a lightweight structure.

[0034] In some embodiments, the support platform 2 and the third part 33 are fixed together by screws.

[0035] Furthermore, the base 1 has a first bend 8 on one side in the first direction, the end of the first bend 8 away from the base 1 has a third mounting hole, and the end of the first bend 8 away from the base 1 extends toward the support platform 2 on one side in the first direction. A first knob 5 is disposed in the third mounting hole and is movable relative to the first bend 8 in the first direction. The base 1 has a second bend 9 on one side in the second direction, the end of the second bend 9 away from the base 1 has a fourth mounting hole, and the end of the second bend 9 away from the base 1 extends toward the support platform 2 on one side in the second direction. A second knob 4 is disposed in the fourth mounting hole and is movable relative to the second bend 9 in the second direction.

[0036] In some embodiments, the first knob 5 and the first bent portion 8 are connected by a thread, and the first direction is the direction in which the first knob 5 is turned. The second knob 4 and the second bent portion 9 are connected by a thread, and the second direction is the direction in which the second knob 4 is turned.

[0037] Furthermore, the edge of the base 1 adjacent to the first bent portion 8 has a first groove. The tilt adjustment platform also includes a first pre-tightening component 7, which is disposed within the first groove. One end of the first pre-tightening component 7 is fixed to the first bent portion 8, and the other end is fixed to the support platform 2. The first pre-tightening component 7 applies a pre-tightening force parallel to a first direction between the support platform 2 and the first bent portion 8. The edge of the base 1 adjacent to the second bent portion 9 has a second groove. The tilt adjustment platform also includes a second pre-tightening component 6, which is disposed within the second groove. One end of the second pre-tightening component 6 is fixed to the second bent portion 9, and the other end is fixed to the support platform 2. The second pre-tightening component 6 applies a pre-tightening force parallel to a second direction between the support platform 2 and the second bent portion 9. By designing grooves on the edges of the base 1 with corresponding bent portions to house the corresponding pre-tightening components, it is beneficial to reduce the space occupied by the first pre-tightening component 7 and the second pre-tightening component 6. The preload provided by the first preload assembly 7 can eliminate the gap and backlash when the bearing platform 2 rotates around the first axis, and the preload provided by the second preload assembly 6 can eliminate the gap and backlash when the bearing platform 2 rotates around the second axis, thereby improving the tilt adjustment accuracy.

[0038] Furthermore, the first preload assembly 7 includes a first stud 71, a first spring 73, and a second stud 72. The first end of the first stud 71 is connected to the first end of the first spring 73, and the second end of the first stud 71 is screwed into the first bend 8 along the thickness direction of the support platform 2. The first end of the second stud 72 is connected to the second end of the first spring 73, and the second end of the second stud 72 is screwed into the support platform 2 along the thickness direction of the support platform 2. The first spring 73 extends in a first direction. The second preload assembly 6 includes a third stud 61, a second spring 63, and a fourth stud 62. The first end of the third stud 61 is connected to the first end of the second spring 63, and the second end of the third stud 61 is screwed into the second bend 9 along the thickness direction of the support platform 2. The first end of the fourth stud 62 is connected to the second end of the second spring 63, and the second end of the fourth stud 62 is screwed into the support platform 2 along the thickness direction of the support platform 2. The second spring 63 extends in a second direction. The first spring 73 provides a preload force for rotation about the first pivot, and the second spring 63 provides a preload force for rotation about the second pivot.

[0039] Furthermore, the tilt adjustment platform also includes a tooling frame 11, through which the part 12 to be adjusted is mounted on the support platform 2. In this way, by adjusting the height and position of the tooling frame 11, the rotation center of the part 12 to be adjusted can be made to coincide with the axis O.

[0040] It should be noted that, Figures 8 to 10 In the example shown, the optical element 12 to be adjusted is used as an example, and the rotation center of the optical element 12 is the vertex of the top surface of the optical element.

[0041] In some embodiments, the base 1 is also provided with multiple mounting holes to facilitate the combination of the tilt adjustment platform and the linear displacement platform to form a multi-dimensional translation / tilt adjustment platform, thereby realizing the precise translation and tilt adjustment of optical elements.

[0042] It is understood that the tilt adjustment platform provided by the present invention can be used not only for the precise adjustment of optical components, but also in other fields that require precise tilt adjustment of components. For example, the present invention can also be used for the adjustment of the focal plane of a detector, which can achieve the tilt adjustment of the focal plane while avoiding the translation of the focal plane.

[0043] To address the problem of additional linear displacement in existing tilt adjustment platforms that use two single-degree-of-freedom angular displacement stages stacked together, this invention provides a tilt adjustment platform where the rotating component has a unique axis of rotation. By aligning the rotation center of the component 12 to be adjusted with the axis O, no additional linear displacement occurs during tilt adjustment. This allows for precise control of the tilt amount of the component 12 relative to the rotation center, significantly improving assembly accuracy and efficiency. Furthermore, the rotating component 3 employs a non-orthogonal flexible joint hinge as the rotation joint, ensuring frictionless, lag-free, and gapless tilt adjustment. Therefore, it achieves higher adjustment accuracy and a more compact structure. Tilting adjustment of two degrees of freedom can be achieved using only one platform, and the compact structure and small size of the tilt adjustment platform make it more convenient for practical use.

[0044] It should be understood that the various forms of processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this invention disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this invention can be achieved, and this is not limited herein.

[0045] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A tilt adjustment platform, characterized in that, include: Base (1); The rotating assembly (3) includes a mounting part (30), a first part (31), a second part (32), and a third part (33) connected in sequence. The mounting part (30) is connected to the first part (31), the first part (31) is connected to the second part (32), and the second part (32) is connected to the third part (33) by corresponding single-axis symmetrical circular flexible hinges. The mounting part (30) is fixed to the base (1). The support platform (2) is disposed on one side of the base (1) and is fixed to the third part (33). The support platform (2) has a distance between itself and the base (1), the mounting part (30), the first part (31) and the second part (32). A first knob (5) and a second knob (4) are provided on the base (1). The first end of the first knob (5) and the first end of the second knob (4) abut against different sides of the support platform (2). The first end of the first knob (5) and the first end of the second knob (4) are both hemispherical. The first end of the first knob (5) is movable relative to the base (1) in a first direction, and the first end of the second knob (4) is movable relative to the base (1) in a second direction. The first direction is perpendicular to the second direction. Among them, the rotation axis between the mounting part (30) and the first part (31), the rotation axis between the first part (31) and the second part (32), and the rotation axis between the second part (32) and the third part (33) are not coplanar and intersect at the axis center, and the rotation center of the adjustment part (12) placed on the support platform (2) coincides with the axis center.

2. The tilt adjustment platform according to claim 1, characterized in that, The base (1) has a through hole (10) that penetrates the base (1) along the thickness direction. The rotating component (3) is disposed in the through hole (10). The mounting part (30), the first part (31), the second part (32) and the third part (33) are connected in sequence along the circumference of the through hole (10).

3. The tilt adjustment platform according to claim 2, characterized in that, The top surface height of the mounting part (30), the top surface height of the first part (31), the top surface height of the second part (32) and the top surface height of the base (1) are all lower than the top surface height of the third part (33). The support platform (2) is disposed on one side of the top surface of the base (1) and the support platform (2) is fixed to the top surface of the third part (33).

4. The tilt adjustment platform according to claim 3, characterized in that, The axis is located on the side of the support platform (2) away from the base (1).

5. The tilt adjustment platform according to claim 2, characterized in that, The overall structure composed of the first part (31), the second part (32) and the third part (33) is in the shape of a triangular frustum. The extension direction of the mounting part (30) is the same as the extension direction of the first part (31), and the mounting part (30) has a plurality of first mounting holes. The through hole (10) includes a main hole (101) and a sliding hole (102) that are connected. The main hole (101) is a triangular frustum-shaped hole. The mounting part (30) is disposed in the sliding hole (102) and contacts the base (1). The base (1) has a plurality of second mounting holes that are connected to the sliding hole (102), and the second mounting holes are aligned with the corresponding first mounting holes. The mounting part (30) is fixed in the sliding hole (102) by using a mounting member that passes through the second mounting holes and the first mounting holes.

6. The tilt adjustment platform according to claim 5, characterized in that, The third part (33) is shaped like a triangular truncated pyramid, and the side of the third part (33) away from the support platform (2) has a hollow area (34).

7. The tilt adjustment platform according to claim 3, characterized in that, The base (1) has a first bend (8) on one side in the first direction. The end of the first bend (8) away from the base (1) has a third mounting hole. The end of the first bend (8) away from the base (1) is located on one side of the support platform (2) in the first direction. The first knob (5) is disposed in the third mounting hole. The first knob (5) is movable relative to the first bend (8) in the first direction. The base (1) has a second bend (9) on one side in the second direction. The end of the second bend (9) away from the base (1) has a fourth mounting hole. The end of the second bend (9) away from the base (1) is located on one side of the support platform (2) in the second direction. The second knob (4) is disposed in the fourth mounting hole. The second knob (4) is movable relative to the second bend (9) in the second direction.

8. The tilt adjustment platform according to claim 7, characterized in that, The base (1) has a first groove on the edge adjacent to the first bent portion (8). The tilt adjustment platform also includes a first pre-tightening component (7). The first pre-tightening component (7) is disposed in the first groove, and one end of the first pre-tightening component (7) is fixed to the first bent portion (8). The other end of the first pre-tightening component (7) is fixed to the support platform (2). The first pre-tightening component (7) applies a pre-tightening force parallel to the first direction between the support platform (2) and the first bent portion (8). The base (1) has a second groove on the edge adjacent to the second bending part (9). The tilt adjustment platform also includes a second pre-tightening component (6). The second pre-tightening component (6) is disposed in the second groove, and one end of the second pre-tightening component (6) is fixed to the second bending part (9). The other end of the second pre-tightening component (6) is fixed to the support platform (2). The second pre-tightening component (6) applies a pre-tightening force parallel to the second direction between the support platform (2) and the second bending part (9).

9. The tilt adjustment platform according to claim 8, characterized in that, The first pre-tightening assembly (7) includes a first stud (71), a first spring (73), and a second stud (72). The first end of the first stud (71) is connected to the first end of the first spring (73), and the second end of the first stud (71) is screwed into the first bent portion (8) along the thickness direction of the support platform (2). The first end of the second stud (72) is connected to the second end of the first spring (73), and the second end of the second stud (72) is screwed into the support platform (2) along the thickness direction of the support platform (2). The first spring (73) extends along the first direction. The second preload assembly (6) includes a third stud (61), a second spring (63), and a fourth stud (62). The first end of the third stud (61) is connected to the first end of the second spring (63), and the second end of the third stud (61) is screwed into the second bend (9) along the thickness direction of the support platform (2). The first end of the fourth stud (62) is connected to the second end of the second spring (63), and the second end of the fourth stud (62) is screwed into the support platform (2) along the thickness direction of the support platform (2). The second spring (63) extends along the second direction.

10. The tilt adjustment platform according to claim 1, characterized in that, The tilt adjustment platform also includes a tooling frame (11), and the part to be adjusted (12) is set on the support platform (2) through the tooling frame (11).

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