A round hole mechanical center positioning device

Abstract

The present application relates to the field of optical machine system adjustment, aims to solve the problem that the optical assembly cannot be positioned to coincide with the mechanical shaft with a round hole in the prior art, and the optical axis of the optical assembly cannot coincide with the mechanical shaft, and provides a round hole mechanical center positioning device, which comprises a fixed base, a step, a part to be centered, an inner groove, a turbine drive disc, a tight sliding block, an inclined waist-shaped sliding groove, a pressing plate and a cross-shaped positioning component; the part to be centered is sleeved on the step; the turbine drive disc is located in the inner groove, the bottom surface of the inner groove has a plurality of waist-shaped sliding grooves, the step has a plurality of concave-shaped sliding grooves, the tight sliding block is adapted to the concave-shaped sliding groove, the tight sliding block has a cylindrical positioning column, the cylindrical positioning column penetrates through the waist-shaped sliding groove and is placed into the inclined waist-shaped sliding groove; the pressing plate is fixed on the fixed base, and the intersection point of the cross-shaped positioning component is located on the axis of the fixed base. The present application has the beneficial effect that the optical assembly can be positioned to coincide with the mechanical shaft with a round hole, and the optical axis of the optical assembly can coincide with the mechanical shaft.

Description

Technical Field

[0001] This invention relates to the field of optomechanical system assembly and adjustment, and more specifically, to a circular hole mechanical center positioning device. Background Technology

[0002] Optomechanical systems involve optical systems and mechanical structure systems. This system has high requirements for mechanical and optical precision. In the system integration phase, the mechanical structural components must first be assembled and tested to meet the design specifications. Then, the optical system is assembled and debugged based on the state of the completed mechanical assembly and adjustment.

[0003] In the optical assembly and adjustment process, the optical axis of the optical system needs to be aligned with the mechanical axis or meet certain performance requirements. Adjustment of the optical axis and mechanical axis on a rotating axis can be achieved by rotating the rotating component and observing the movement of the reference cursor reflected by the mirror in the testing equipment. Adjustment of the optical axis and mechanical axis on a non-rotating axis cannot be done by rotating the structural component, but it is still necessary to initially ensure the alignment of the optical axis and mechanical axis to assist in the assembly and adjustment of optical components in the corresponding positions and to achieve the optical assembly and adjustment targets more quickly. In existing technologies, it is impossible to position optical components that need to be aligned with the mechanical axis with the circular hole, and the optical axis of the optical component cannot be aligned with the mechanical axis. Summary of the Invention

[0004] The present invention aims to provide a circular hole mechanical center positioning device to solve the problem in the prior art that it is impossible to position optical components that need to coincide with the mechanical axis with the circular hole, and that the optical axis of the optical component cannot coincide with the mechanical axis.

[0005] The embodiments of the present invention are implemented as follows:

[0006] This invention provides a circular hole mechanical center positioning device, which includes a fixed base;

[0007] The lower part of the fixed base has a step, and a centering part is fitted on the step. The centering part and the step are fitted together with a clearance and are attached to the fixed base.

[0008] The upper part of the fixed base is provided with an inner groove, and a rotatable turbine drive disk is adapted inside the inner groove. The bottom surface of the inner groove is provided with a number of symmetrically distributed waist-shaped sliding grooves. The number of waist-shaped sliding grooves penetrate the bottom surface of the inner groove and the step. The step is provided with a U-shaped sliding groove at the position of the number of waist-shaped sliding grooves. The U-shaped sliding grooves extend radially along the step. A clamping slider is slidably adapted inside the U-shaped sliding groove. The clamping slider has a cylindrical positioning post on the side near the fixed base. The cylindrical positioning post is located inside the waist-shaped sliding groove and is higher than the bottom surface of the inner groove.

[0009] The aforementioned turbine drive disk is provided with a plurality of oblique waist-shaped grooves, the plurality of oblique waist-shaped grooves are adapted to the plurality of waist-shaped grooves, and the aforementioned cylindrical positioning post passes through the aforementioned waist-shaped grooves and is placed into the aforementioned oblique waist-shaped grooves.

[0010] The upper part of the turbine drive disk is provided with a pressure plate, which is detachably and fixedly connected to the fixed base along the axis of the fixed base. The upper part of the turbine drive disk is provided with a cross-shaped positioning member, and the intersection of the cross-shaped positioning member is located on the axis of the fixed base.

[0011] The circular hole mechanical center positioning device disclosed in this embodiment is equipped with a rotatable turbine drive disk. The turbine drive disk drives the clamping slider to move linearly through several oblique waist-shaped grooves, so as to loosen or clamp the part to be centered. Then, by using the cross-shaped positioning member as a cross reference, the center of the part to be centered can be preliminarily determined. Thus, the circular hole mechanical center positioning device has the beneficial effect of being able to position an optical component that needs to coincide with the mechanical axis with a circular hole, and the optical axis of the optical component can coincide with the mechanical axis.

[0012] Optionally, the diameter of the aforementioned step is smaller than the inner diameter of the aforementioned part to be centered.

[0013] This configuration serves as an axial positioning reference surface for the part to be centered. Before the clamping slider is tightened, adjusting the step of the fixed base to contact the part to be centered can prevent the entire mechanical structure from tilting.

[0014] Optionally, a through hole is provided on the outer wall of the fixed base, the through hole is tangent to the turbine drive disk, and a worm gear assembly for driving the turbine drive disk to reciprocate is adapted inside the through hole.

[0015] With this configuration, the rotational motion of the worm gear assembly is converted into the rotational motion of the turbine drive disk, and then the clamping slider is driven to move linearly through the several oblique waist-shaped grooves of the turbine drive disk, thereby achieving the purpose of loosening or clamping the centering part.

[0016] Optionally, one end of one of the aforementioned inclined waist-shaped grooves is close to the inner diameter of the aforementioned turbine drive disk, and the other end of the aforementioned inclined waist-shaped grooves is close to the outer diameter of the aforementioned turbine drive disk.

[0017] With this configuration, several of the aforementioned inclined waist-shaped grooves are designed at a certain angle, which can serve to push the aforementioned clamping slider away or pull it closer.

[0018] Optionally: a plurality of the above-mentioned waist-shaped grooves have a first waist-shaped groove, a second waist-shaped groove, a third waist-shaped groove and a fourth waist-shaped groove, wherein the first waist-shaped groove, the second waist-shaped groove, the third waist-shaped groove and the fourth waist-shaped groove are symmetrical to each other and evenly distributed on the bottom surface of the inner groove.

[0019] The aforementioned inclined waist-shaped grooves have a first inclined waist-shaped groove, a second inclined waist-shaped groove, a third inclined waist-shaped groove, and a fourth inclined waist-shaped groove. The first inclined waist-shaped groove, the second inclined waist-shaped groove, the third inclined waist-shaped groove, and the fourth inclined waist-shaped groove are evenly distributed on the turbine drive disk and correspond to the first waist-shaped groove, the second waist-shaped groove, the third waist-shaped groove, and the fourth waist-shaped groove, respectively.

[0020] With this configuration, the turbine drive disc drives the clamping slider to move linearly along the grooves of the first, second, third, and fourth waist-shaped grooves, thereby clamping or loosening the centering part.

[0021] Optionally: the above-mentioned concave sliding groove has a first sliding groove, a second sliding groove, a third sliding groove and a fourth sliding groove, the first sliding groove, the second sliding groove, the third sliding groove and the fourth sliding groove are symmetrically distributed and respectively correspond to the first waist-shaped groove, the second waist-shaped groove, the third waist-shaped groove and the fourth waist-shaped groove;

[0022] The aforementioned clamping slider has a first clamping block, a second clamping block, a third clamping block, and a fourth clamping block, wherein the first clamping block, the second clamping block, the third clamping block, and the fourth clamping block are respectively slidably mounted on the first slide groove, the second slide groove, the third slide groove, and the fourth slide groove;

[0023] The cylindrical positioning post has a first circular positioning post, a second circular positioning post, a third circular positioning post and a fourth circular positioning post, wherein the first circular positioning post is located inside the first waist-shaped groove and the first inclined waist-shaped groove.

[0024] The aforementioned second circular positioning post is located inside the aforementioned second waist-shaped groove and the aforementioned second inclined waist-shaped groove;

[0025] The aforementioned third circular positioning post is located inside the aforementioned third waist-shaped groove and the aforementioned third oblique waist-shaped groove;

[0026] The aforementioned fourth circular positioning post is located inside the aforementioned fourth waist-shaped groove and the aforementioned fourth oblique waist-shaped groove.

[0027] This setup allows the device to be fixed in the aforementioned centering parts with different apertures, which can be used to initially determine the mechanical center of the mechanical component with the circular hole, and to assist in the assembly and adjustment of the optical components at the relevant positions using optical testing equipment.

[0028] Optionally, the cross-shaped positioning component has a first thin elastic wire and a second thin elastic wire, the first thin elastic wire and the second thin elastic wire intersect each other perpendicularly, and the intersection point is coaxial with the axis of the fixed base.

[0029] With this setup, the center of the part to be centered can be preliminarily determined by using the intersection of the first and second thin elastic wires as a cross reference.

[0030] Optionally: The first thin elastic pull wire is provided with a first pull wire pressure block and a second pull wire pressure block at both ends, and the second thin elastic pull wire is provided with a third pull wire pressure block and a fourth pull wire pressure block at both ends;

[0031] The first thin elastic tension wire is detachably fixed to the pressure plate by the first tension wire clamping block and the second tension wire clamping block, and the second thin elastic tension wire is detachably fixed to the pressure plate by the third tension wire clamping block and the fourth tension wire clamping block.

[0032] With this configuration, the first, second, third, and fourth tensioning blocks can tighten the first and second thin elastic tension wires, thereby ensuring the stability of the intersection point and facilitating the subsequent assembly and debugging of the optical system.

[0033] Optionally: The first thin elastic wire and the second thin elastic wire are provided with V-shaped cross grooves at the positions corresponding to the pressure plate. The diameter of the V-shaped cross groove is greater than the depth of the V-shaped cross groove, and the length of the V-shaped cross groove is less than the diameter of the pressure plate. The first thin elastic wire and the second thin elastic wire are sequentially embedded into the corresponding V-shaped cross grooves.

[0034] This configuration, with the aforementioned V-shaped cross groove, serves two purposes. First, it facilitates the securing of the first, second, third, and fourth wire tensioning blocks within the V-shaped cross groove. Second, the location of the first and second thin elastic wires within the V-shaped cross groove effectively prevents friction, extending their service life and thus improving the overall lifespan of the device. Furthermore, the V-shaped cross groove also serves to fix the first and second thin elastic wires, effectively preventing them from wobbling significantly, thereby facilitating the assembly and debugging of the optical system.

[0035] Optionally, the pressure plate is provided with a number of screws, and the pressure plate is detachably fixed to the fixed base by the number of screws.

[0036] This configuration, achieved through the connection of several screws, facilitates both assembly and disassembly while limiting the axial movement of the turbine drive disc.

[0037] Optionally, the turbine drive disk and the groove wall of the inner groove are spaced apart from each other.

[0038] This configuration, with a certain gap, allows for the release of the radial rotational freedom of the turbine drive disk, facilitating the worm gear assembly to drive the turbine drive disk to reciprocate.

[0039] In summary, the circular hole mechanical center positioning device disclosed in this invention has the beneficial effect of being able to position an optical component that needs to coincide with the mechanical axis with a circular hole, and the optical axis of the optical component can coincide with the mechanical axis. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is an exploded view of a circular hole mechanical center positioning device according to an embodiment of the present invention;

[0042] Figure 2 This is an exploded view of a circular hole mechanical center positioning device according to an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the structure of a circular hole mechanical center positioning device according to an embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of the structure combining the fixed base and the turbine drive disk in an embodiment of the present invention;

[0045] Figure 5 As described in the embodiments of the present invention Figure 4 A top view (the turbine drive disk rotates counterclockwise);

[0046] Figure 6 As described in the embodiments of the present invention Figure 4 A bottom view (the turbine drive disk rotates counterclockwise);

[0047] Figure 7 As described in the embodiments of the present invention Figure 4 A top view (the turbine drive disk rotates clockwise);

[0048] Figure 8As described in the embodiments of the present invention Figure 4 A bottom view (the turbine drive disk rotates clockwise).

[0049] Icons: 1-Fixed base, 2-Step, 3-Part to be centered, 4-Inner groove, 5-Turbine drive disc, 6-Oval groove, 7-U-shaped groove, 8-Tightening slider, 9-Cylindrical positioning post, 10-Slanted oval groove, 11-Pressure plate, 12-Cross-shaped positioning component, 13-Through hole, 14-Worm gear assembly, 15-First oval groove, 16-Second oval groove, 17-Third oval groove, 18-Fourth oval groove, 19-First slanted oval groove, 20-Second slanted oval groove, 21-Third slanted oval groove, 22-Fourth slanted oval groove, 23-First groove, 24-Second groove 25-Third sliding groove, 26-Fourth sliding groove, 27-First clamping block, 28-Second clamping block, 29-Third clamping block, 30-Fourth clamping block, 31-First circular positioning post, 32-Second circular positioning post, 33-Third circular positioning post, 34-Fourth circular positioning post, 35-First thin elastic pull wire, 36-Second thin elastic pull wire, 37-First pull wire pressure block, 38-Second pull wire pressure block, 39-Third pull wire pressure block, 40-Fourth pull wire pressure block, 41-V-shaped cross groove, 42-Screw, 43-Rotary reciprocating motion, 44-Linear reciprocating motion, 45-Reciprocating rotary drive. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0052] Example

[0053] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 This embodiment proposes a mechanical center positioning device for a circular hole, including a fixed base 1;

[0054] The lower part of the fixed base 1 has a step 2, and a centering part 3 is sleeved on the step 2. The centering part 3 and the step 2 are fitted together with a clearance and attached to the fixed base 1.

[0055] The upper part of the fixed base 1 is provided with an inner groove 4. The inner groove 4 is fitted with a rotatable turbine drive disk 5. The bottom surface of the inner groove 4 is provided with several symmetrically distributed waist-shaped sliding grooves 6. The several waist-shaped sliding grooves 6 pass through the bottom surface of the inner groove 4 and the step 2. The step 2 is provided with U-shaped sliding grooves 7 at the positions corresponding to the several waist-shaped sliding grooves 6. The U-shaped sliding grooves 7 extend radially along the step 2. A clamping slider 8 is slidably fitted in the U-shaped sliding groove 7. The clamping slider 8 has a cylindrical positioning post 9 on the side near the fixed base 1. The cylindrical positioning post 9 is located in the waist-shaped sliding groove 6 and is higher than the bottom surface of the inner groove 4.

[0056] The turbine drive disk 5 has several oblique waist-shaped grooves 10, which are adapted to several waist-shaped grooves 6. The cylindrical positioning post 9 passes through the waist-shaped groove 6 and is placed into the oblique waist-shaped groove 10.

[0057] The upper part of the turbine drive disk 5 is provided with a pressure plate 11, which is detachably fixedly connected to the fixed base 1 along the axis of the fixed base 1. The upper part of the turbine drive disk 5 is provided with a cross-shaped positioning member 12, and the intersection of the cross-shaped positioning member 12 is located on the axis of the fixed base 1.

[0058] The circular hole mechanical center positioning device disclosed in this embodiment is equipped with a rotatable turbine drive disk 5. The turbine drive disk 5 drives the clamping slider 8 to move linearly through several oblique waist-shaped grooves 10, so as to loosen or clamp the part 3 to be centered. Then, by using the cross-shaped positioning member 12 as a cross reference, the center of the part 3 to be centered can be initially determined. Thus, the circular hole mechanical center positioning device has the beneficial effect of being able to position optical components that need to coincide with the mechanical axis with the circular hole, and the optical axis of the optical component can coincide with the mechanical axis.

[0059] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The diameter of step 2 is smaller than the inner diameter of the part to be centered 3, so that it can be used as an axial positioning reference surface with the part to be centered 3. Before the sliding block 8 is tightened, the step 2 of the fixed base 1 is adjusted to contact the part to be centered 3 in place, which can avoid the tilt of the entire mechanical structure.

[0060] A through hole 13 is provided on the outer wall of the fixed base 1. The through hole 13 is tangent to the turbine drive disk 5. The inside of the through hole 13 is fitted with a worm gear assembly 14 for driving the turbine drive disk 5 to reciprocate. By converting the rotational motion of the worm gear assembly 14 into the rotational motion of the turbine drive disk 5, and then driving the top slider 8 to move linearly through several oblique waist-shaped grooves 10 of the turbine drive disk 5, the purpose of loosening or clamping the centering part 3 is achieved.

[0061] In this embodiment, the worm gear assembly 14 is self-locking. When the worm gear assembly 14 rotates to the appropriate position, the self-locking makes it difficult for the turbine drive disk 5 to rotate, thereby enabling the clamping slider 8 to clamp or loosen the centering part 3.

[0062] One end of several inclined waist-shaped grooves 10 is close to the inner diameter of the turbine drive disk 5, and the other end of several inclined waist-shaped grooves 10 is close to the outer diameter of the turbine drive disk 5. Several inclined waist-shaped grooves 10 are designed at a certain angle, which can play the role of pushing the top block 8 away or pulling it closer.

[0063] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 A plurality of waist-shaped grooves 6 have a first waist-shaped groove 15, a second waist-shaped groove 16, a third waist-shaped groove 17, and a fourth waist-shaped groove 18, which are symmetrically distributed and evenly distributed on the bottom surface of the inner groove 4; a plurality of oblique waist-shaped grooves 10 have a first oblique waist-shaped groove 19, a second oblique waist-shaped groove 20, a third oblique waist-shaped groove 21, and a fourth oblique waist-shaped groove 22, wherein the first oblique waist-shaped groove 19... The second oblique waist-shaped groove 20, the third oblique waist-shaped groove 21, and the fourth oblique waist-shaped groove 22 are evenly distributed on the turbine drive disk 5 and correspond to the first waist-shaped groove 15, the second waist-shaped groove 16, the third waist-shaped groove 17, and the fourth waist-shaped groove 18, respectively. In this way, the turbine drive disk 5 drives the clamping slider 8 to move linearly along the groove direction of the first waist-shaped groove 15, the second waist-shaped groove 16, the third waist-shaped groove 17, and the fourth waist-shaped groove 18, thereby clamping or loosening the centering part 3.

[0064] The U-shaped slide groove 7 has a first slide groove 23, a second slide groove 24, a third slide groove 25, and a fourth slide groove 26. The first slide groove 23, the second slide groove 24, the third slide groove 25, and the fourth slide groove 26 are symmetrically distributed and correspond to the first waist-shaped groove 15, the second waist-shaped groove 16, the third waist-shaped groove 17, and the fourth waist-shaped groove 18, respectively. The clamping slider 8 has a first clamping block 27, a second clamping block 28, a third clamping block 29, and a fourth clamping block 30. The first clamping block 27, the second clamping block 28, the third clamping block 29, and the fourth clamping block 30 are slidably mounted on the first slide groove 23, the second slide groove 24, the third slide groove 25, and the fourth slide groove 26, respectively. The cylindrical positioning post 9 has a first circular positioning post 3. 1. The second circular positioning post 32, the third circular positioning post 33, and the fourth circular positioning post 34, wherein the first circular positioning post 31 is located inside the first waist-shaped groove 15 and the first oblique waist-shaped groove 19; the second circular positioning post 32 is located inside the second waist-shaped groove 16 and the second oblique waist-shaped groove 20; the third circular positioning post 33 is located inside the third waist-shaped groove 17 and the third oblique waist-shaped groove 21; and the fourth circular positioning post 34 is located inside the fourth waist-shaped groove 18 and the fourth oblique waist-shaped groove 22, can fix the device in the centering parts 3 with different apertures, can be used to initially determine the mechanical center of the mechanical component with the circular hole, and can assist in the assembly and adjustment of the optical components at the relevant positions through optical testing equipment.

[0065] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The cross-shaped positioning component 12 has a first thin elastic pull wire 35 and a second thin elastic pull wire 36. The first thin elastic pull wire 35 and the second thin elastic pull wire 36 intersect each other perpendicularly, and the intersection point is coaxial with the axis of the fixed base 1. By using the intersection point of the first thin elastic pull wire 35 and the second thin elastic pull wire 36 as a cross reference, the center of the part 3 to be centered can be initially determined.

[0066] The first thin elastic tension wire 35 has a first tension block 37 and a second tension block 38 at both ends, and the second thin elastic tension wire 36 has a third tension block 39 and a fourth tension block 40 at both ends. The first thin elastic tension wire 35 is detachably fixed to the pressure plate 11 by the first tension block 37 and the second tension block 38, and the second thin elastic tension wire 36 is detachably fixed to the pressure plate 11 by the third tension block 39 and the fourth tension block 40. The first thin elastic tension wire 35 and the second thin elastic tension wire 36 can be tightened by the first tension block 37, the second tension block 38, the third tension block 39 and the fourth tension block 40, thereby ensuring the stability of the intersection point and facilitating the subsequent assembly and debugging of the optical system.

[0067] The first thin elastic draw wire 35 and the second thin elastic draw wire 36 are provided with V-shaped cross grooves 41 at the positions corresponding to the pressure plate 11. The diameter of the V-shaped cross groove 41 is greater than the depth of the V-shaped cross groove 41, and the length of the V-shaped cross groove 41 is less than the diameter of the pressure plate 11. The first thin elastic draw wire 35 and the second thin elastic draw wire 36 are sequentially embedded into the corresponding V-shaped cross grooves 41. This V-shaped cross groove 41 is provided to facilitate the first draw wire pressure block 37, the second draw wire pressure block 38, the third draw wire pressure block 39, and the fourth draw wire pressure block 40 to press the first thin elastic draw wire 35 and the second thin elastic draw wire 36 into place. The wire 36 is fastened in the V-shaped cross groove 41. On the other hand, the first thin elastic tension wire 35 and the second thin elastic tension wire 36 are located in the V-shaped cross groove 41, which effectively avoids friction and extends the service life of the first thin elastic tension wire 35 and the second thin elastic tension wire 36, thereby improving the service life of the entire device. At the same time, the V-shaped cross groove 41 also serves to fix the first thin elastic tension wire 35 and the second thin elastic tension wire 36, effectively preventing the first thin elastic tension wire 35 and the second thin elastic tension wire 36 from shaking significantly, thus facilitating the assembly and debugging of the optical system.

[0068] The pressure plate 11 is provided with several screws 42. The pressure plate 11 is detachably and fixedly connected to the fixed base 1 by several screws 42. The connection is achieved by several screws 42, which can facilitate disassembly and assembly and restrict the axial movement of the turbine drive disk 5.

[0069] The turbine drive disk 5 and the groove wall of the inner groove 4 are spaced apart from each other, which leaves a certain gap, allowing the radial rotational freedom of the turbine drive disk 5 to be released, so that the worm gear assembly 14 can drive the turbine drive disk 5 to reciprocate.

[0070] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8A method for using a circular hole mechanical center positioning device: Rotate the worm gear assembly 14, causing the turbine drive disk 5 to rotate counterclockwise within the inner groove 4. At this time, the first oblique waist-shaped groove 19, the second oblique waist-shaped groove 20, the third oblique waist-shaped groove 21, and the fourth oblique waist-shaped groove 22 on the turbine drive disk 5 respectively push the first circular positioning post 31, the second circular positioning post 32, the third circular positioning post 33, and the fourth circular positioning post 34 within the first waist-shaped groove 15, the second waist-shaped groove 16, the third waist-shaped groove 17, and the fourth waist-shaped groove 18 on the fixed base 1. This, in turn, pushes the first clamping block 27, the second clamping block 28, the third clamping block 29, and the fourth clamping block 30 to slide in the first sliding groove 23, the second sliding groove 24, the third sliding groove 25, and the fourth sliding groove 26, and they move closer together along the axis. Then, place the step 2 of the fixed base 1 into the space to be used. Centering component 3 is used to bring the part to be centered into contact with the fixed base 1. The worm gear assembly 14 is rotated in the opposite direction. At this time, the turbine drive disk 5 rotates clockwise in the inner groove 4. The first clamping block 27, the second clamping block 28, the third clamping block 29, and the fourth clamping block 30 move away from each other on the first slide groove 23, the second slide groove 24, the third slide groove 25, and the fourth slide groove 26 until the outer ends of the first clamping block 27, the second clamping block 28, the third clamping block 29, and the fourth clamping block 30 abut against the inner wall of the part to be centered, thereby achieving the purpose of loosening or clamping the part to be centered. The intersection of the cross-shaped positioning component 12 serves as the approximate mechanical center of the part to be centered. This mechanical center can provide a certain reference for the subsequent assembly and adjustment of optical components. Therefore, this positioning device can assist in the assembly and adjustment of optical components in relevant positions.

[0071] See Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 In this embodiment, when the turbine drive disk 5 rotates counterclockwise to the stop point, the first clamping block 27, the second clamping block 28, the third clamping block 29 and the fourth clamping block 30 are at the minimum clamping position; when the turbine drive disk 5 rotates clockwise to the stop point, the first clamping block 27, the second clamping block 28, the third clamping block 29 and the fourth clamping block 30 are at the maximum clamping position.

[0072] See Figure 4 In this embodiment, the turbine drive disk 5 rotates and reciprocates 43, the oblique waist-shaped slide groove 10 of the turbine drive disk 5 drives the cylindrical positioning column 9 to reciprocate linearly within the waist-shaped slide groove 6 44, and the worm gear assembly 14 reciprocates and rotates within the through hole 13 45.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A mechanical center positioning device for a circular hole, characterized in that: Includes a fixed base; The lower part of the fixed base has a step, and a centering part is sleeved on the step. The centering part and the step are fitted together with a clearance and are attached to the fixed base. The upper part of the fixed base is provided with an inner groove, and a rotatable turbine drive disk is adapted inside the inner groove. The bottom surface of the inner groove is provided with a plurality of symmetrically distributed waist-shaped sliding grooves. The plurality of waist-shaped sliding grooves penetrate the bottom surface of the inner groove and the step. The step is provided with a U-shaped sliding groove at the position corresponding to the plurality of waist-shaped sliding grooves. The U-shaped sliding grooves extend radially along the step. A clamping slider is slidably adapted inside the U-shaped sliding groove. The clamping slider has a cylindrical positioning post on the side near the fixed base. The cylindrical positioning post is located inside the waist-shaped sliding groove and is higher than the bottom surface of the inner groove. The turbine drive disk is provided with a plurality of oblique waist-shaped grooves, and the plurality of oblique waist-shaped grooves are adapted to the plurality of waist-shaped grooves. The cylindrical positioning post passes through the waist-shaped groove and is placed into the oblique waist-shaped groove. The upper part of the turbine drive disk is provided with a pressure plate, which is detachably fixed to the fixed base along the axis of the fixed base. The upper part of the turbine drive disk is provided with a cross-shaped positioning component, and the intersection of the cross-shaped positioning component is located on the axis of the fixed base. The plurality of the waist-shaped grooves have a first waist-shaped groove, a second waist-shaped groove, a third waist-shaped groove and a fourth waist-shaped groove, wherein the first waist-shaped groove, the second waist-shaped groove, the third waist-shaped groove and the fourth waist-shaped groove are symmetrical to each other and evenly distributed on the bottom surface of the inner groove; The plurality of the inclined waist-shaped grooves have a first inclined waist-shaped groove, a second inclined waist-shaped groove, a third inclined waist-shaped groove and a fourth inclined waist-shaped groove, the first inclined waist-shaped groove, the second inclined waist-shaped groove, the third inclined waist-shaped groove and the fourth inclined waist-shaped groove are evenly distributed on the turbine drive disk and respectively correspond to the first waist-shaped groove, the second waist-shaped groove, the third waist-shaped groove and the fourth waist-shaped groove; The concave-shaped slide groove has a first slide groove, a second slide groove, a third slide groove and a fourth slide groove. The first slide groove, the second slide groove, the third slide groove and the fourth slide groove are symmetrically distributed and correspond to the first waist-shaped groove, the second waist-shaped groove, the third waist-shaped groove and the fourth waist-shaped groove respectively. The clamping slider has a first clamping block, a second clamping block, a third clamping block and a fourth clamping block, and the first clamping block, the second clamping block, the third clamping block and the fourth clamping block are respectively slidably mounted on the first slide groove, the second slide groove, the third slide groove and the fourth slide groove; The cylindrical positioning post has a first circular positioning post, a second circular positioning post, a third circular positioning post and a fourth circular positioning post, wherein the first circular positioning post is located inside the first waist-shaped groove and the first inclined waist-shaped groove; The second circular positioning post is located inside the second oblique oblique groove and the second oblique oblique groove; The third circular positioning post is located inside the third waist-shaped groove and the third oblique waist-shaped groove; The fourth circular positioning post is located inside the fourth waist-shaped groove and the fourth oblique waist-shaped groove; The cross-shaped positioning component has a first thin elastic pull wire and a second thin elastic pull wire, which intersect each other perpendicularly, and the intersection point is coaxial with the axis of the fixed base.

2. The circular hole mechanical center positioning device according to claim 1, characterized in that: The diameter of the step is smaller than the inner diameter of the part to be centered.

3. The circular hole mechanical center positioning device according to claim 1, characterized in that: A through hole is provided on the outer wall of the fixed base. The through hole is tangent to the turbine drive disk. A worm gear assembly for driving the turbine drive disk to reciprocate is adapted inside the through hole.

4. The circular hole mechanical center positioning device according to claim 1, characterized in that: One end of each of the inclined waist-shaped grooves is close to the inner diameter of the turbine drive disk, and the other end of each of the inclined waist-shaped grooves is close to the outer diameter of the turbine drive disk.

5. A circular hole mechanical center positioning device according to claim 1, characterized in that: The first thin elastic draw wire is provided with a first draw wire pressure block and a second draw wire pressure block at both ends, and the second thin elastic draw wire is provided with a third draw wire pressure block and a fourth draw wire pressure block at both ends. The first thin elastic draw wire is detachably fixed to the pressure plate by the first draw wire pressure block and the second draw wire pressure block, and the second thin elastic draw wire is detachably fixed to the pressure plate by the third draw wire pressure block and the fourth draw wire pressure block respectively.

6. The circular hole mechanical center positioning device according to claim 5, characterized in that: The first and second thin elastic wires are provided with V-shaped cross grooves at positions corresponding to the pressure plate. The diameter of the V-shaped cross groove is greater than the depth of the V-shaped cross groove, and the length of the V-shaped cross groove is less than the diameter of the pressure plate. The first and second thin elastic wires are sequentially embedded into the corresponding V-shaped cross grooves.

7. The mechanical center positioning device for a circular hole according to claim 1, characterized in that: The pressure plate is provided with a number of screws, and the pressure plate is detachably and fixedly connected to the fixed base by the number of screws.

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