Device and method for positioning small-hole structural member by using parallel light projection

Abstract

The invention discloses a device and a method for positioning a small-hole structural member by using parallel light projection. The device comprises a light source, a collimation light path assembly, a light path direction adjusting member and an imaging device, the collimation light path assembly is placed in front of the light source, the light path direction adjusting piece is placed in front of the collimation light path assembly, the small hole part is located between the light path direction adjusting piece and the imaging device, the placement direction of the collimation light path assembly is perpendicular to the placement direction of the small hole part, and the small hole part is located below the light path direction adjusting piece; the collimation light path assembly is used for collimating irradiation light emitted by the light source, the light path direction adjusting piece is used for adjusting the light path direction so that through holes of the small-hole parts can be covered by light spots, and the imaging device is used for recording the positions of the light spots formed by projection of the through holes of the small-hole parts so as to assist coaxial positioning of the small-hole parts. The device has the advantages of being compact in structure, easy to operate, high in positioning precision and the like, and the efficiency of small-hole structural part shaft assembly is remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of optical measurement technology, specifically relating to a device and method for positioning small hole structures using parallel light projection. Background Technology

[0002] For the coaxial assembly of multiple small-hole components, existing technologies generally use coordinate measuring machines or other coaxiality measuring instruments for positioning assistance. On the one hand, the instruments are very expensive and have relatively high requirements; on the other hand, it is difficult to achieve real-time feedback adjustment, which seriously reduces the assembly efficiency of multiple small-hole components. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a device and method for positioning small hole structural components using parallel light projection, which is compact in structure, simple to operate, and has high positioning accuracy, in order to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, the present invention may adopt the following technical solutions:

[0005] A device for positioning pinhole components using parallel light projection includes: a light source, a collimating optical path assembly, an optical path direction adjustment component, and an imaging device. The collimating optical path assembly is placed in front of the light source, and the optical path direction adjustment component is placed in front of the collimating optical path assembly. The pinhole component is located between the optical path direction adjustment component and the imaging device. The placement direction of the collimating optical path assembly is perpendicular to the placement direction of the pinhole component. The pinhole component is located below the optical path direction adjustment component, and the imaging device is located below the pinhole component. The collimating optical path assembly is used to collimate the illumination light emitted by the light source. The optical path direction adjustment component is used to adjust the optical path direction so that the through-hole of the pinhole component is covered by a light spot. The imaging device records the position of the light spot projected from the through-hole of the pinhole component to assist in the coaxial positioning and assembly of multiple pinhole components.

[0006] As a further improvement of the invention, a beam expander is also included, which is located between the pinhole component and the imaging device.

[0007] As a further improvement of the present invention, the aperture of the small hole component is smaller than the aperture of the light spot projected by the optical path direction adjustment component.

[0008] As a further improvement of the present invention, the light source is a laser.

[0009] As a further improvement of the present invention, the collimating optical path assembly includes a concave lens and a convex lens.

[0010] As a further improvement of the present invention, the optical path direction adjustment component includes a reflector.

[0011] As a further improvement of the present invention, the imaging device includes a CCD imaging device.

[0012] As a general technical concept, the present invention also provides a method for positioning small-hole structural components using parallel light projection. This method utilizes the aforementioned apparatus for positioning small-hole structural components using parallel light projection and includes the following steps:

[0013] Step S1: Collimate the light beam emitted by the light source using a collimating optical path assembly;

[0014] Step S2: Adjust the beam direction using the optical path direction adjustment component so that the optical path is adjusted to the position of the matching adjustment assembly hole;

[0015] Step S3: Place the first small hole component in the optical path so that the through hole part of the small hole component is covered by the entire light spot. Adjust the position of the small hole component so that the plane of the small hole is perpendicular to the light beam. Observe the circular light spot in the imaging device and record the position of the outer ring of the light spot as position one. The assembly of the first small hole component is completed.

[0016] Step S4: Install the second pinhole component. The beam passes through the second pinhole component, and the position of the light spot formed on the imaging device is recorded as position two. Adjust the position of the second pinhole component so that the light spot is circular and concentric with position two, thus completing the assembly of the second pinhole component. In this way, complete the high-precision axial assembly of multiple pinhole components to obtain the pinhole structure.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] This invention relates to a device and method for positioning pinhole components using parallel light projection. A collimating optical path assembly is placed in front of a light source to collimate the emitted light. An optical path direction adjustment component is placed in front of the collimating optical path assembly to adjust the optical path direction, ensuring that the through-hole of the pinhole component is covered by a light spot. The pinhole component is placed between the optical path direction adjustment component and an imaging device, with the collimating optical path assembly perpendicular to the pinhole component's orientation, and the pinhole component positioned below the optical path direction adjustment component. The light beam emitted by the light source is projected parallel onto the pinhole component. The imaging device records the position of the light spot projected from the through-hole of the pinhole component in real time. The assembly position of the pinhole component is adjusted based on the light spot position, achieving coaxial alignment of the light spots of multiple pinhole components. Ultimately, this invention achieves high-precision coaxial assembly of multiple pinhole components. This invention features a compact structure, simple operation, and high positioning accuracy, significantly improving the efficiency of coaxial assembly of pinhole components. Attached Figure Description

[0019] Figure 1 This is one of the schematic diagrams illustrating the structural principle of a device for positioning small-hole structural components using parallel light projection in a specific embodiment of the present invention;

[0020] Figure 2 This is the second schematic diagram of the structural principle of the device for positioning small hole structural components using parallel light projection in a specific embodiment of the present invention;

[0021] Figure 3 This is the pattern displayed on the imaging device when there is only one small hole component in a specific embodiment of the present invention;

[0022] Figure 4 This is the pattern displayed on the imaging device after placing two small hole components in a specific embodiment of the present invention;

[0023] Figure 5 This is the pattern displayed on the imaging device after adjusting the position of the second small hole component in a specific embodiment of the present invention;

[0024] Figure 6 This is the third schematic diagram illustrating the structural principle of the device for positioning small-hole structural components using parallel light projection in a specific embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the process for positioning small hole structural components using parallel light projection in a specific embodiment of the present invention;

[0026] Legend: 1. Light source; 2. Concave lens; 3. Convex lens; 4. Reflector; 5. Pinhole component; 6. Imaging device; 7. Beam expander. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and are not intended to 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 of this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more unless otherwise explicitly specified.

[0030] Example

[0031] like Figures 1 to 6 As shown, the device for positioning pinhole components using parallel light projection according to the present invention includes: a light source 1, a collimating optical path assembly, an optical path direction adjustment component, and an imaging device 6. The collimating optical path assembly is placed in front of the light source 1, the optical path direction adjustment component is placed in front of the collimating optical path assembly, and the pinhole component 5 is located between the optical path direction adjustment component and the imaging device 6. The placement direction of the collimating optical path assembly is perpendicular to the placement direction of the pinhole component 5, the pinhole component 5 is located below the optical path direction adjustment component, and the imaging device 6 is located below the pinhole component 5. The collimating optical path assembly is used to collimate the illumination light emitted by the light source 1, the optical path direction adjustment component is used to adjust the optical path direction so that the through-hole of the pinhole component 5 is covered by a light spot, and the imaging device 6 is used to record the position of the light spot projected from the through-hole of the pinhole component 5 to assist in the coaxial positioning and assembly of multiple pinhole components 5. It should be noted that the aperture size of the pinhole component 5 is 1 mm or larger.

[0032] In this embodiment, a collimating optical path assembly is placed in front of the light source 1 to collimate the illumination light emitted by the light source 1. An optical path direction adjustment component is placed in front of the collimating optical path assembly to adjust the optical path direction, so that the through hole of the pinhole component 5 is covered by the light spot. The pinhole component 5 is placed between the optical path direction adjustment component and the imaging device 6, with the placement direction of the collimating optical path assembly perpendicular to the placement direction of the pinhole component 5, and the pinhole component 5 located below the optical path direction adjustment component. The light beam emitted by the light source 1 is projected parallel onto the pinhole component. The imaging device 6 records the position of the light spot formed by the projection of the through hole of the pinhole component 1 in real time. The assembly position of the pinhole component 5 is adjusted according to the position of the light spot, so that the light spots of multiple pinhole components 5 are coaxial, and finally the purpose of high-precision coaxial assembly of multiple pinhole components 5 is achieved. This invention has the characteristics of compact structure, simple operation, and high positioning accuracy, and significantly improves the efficiency of coaxial assembly of pinhole structural components.

[0033] like Figure 6 As shown, it also includes a beam expander 7, which is located between the pinhole component 5 and the imaging device 6. To further improve the alignment accuracy, a beam expander 7 can be added in front of the imaging device 6 to further magnify the beam spot, thereby reducing the impact of the accuracy of the imaging device 6 on the positioning accuracy of the pinhole component 5.

[0034] In this embodiment, the aperture of the small hole component 5 is smaller than the aperture of the light spot projected by the optical path direction adjustment component, so that the through hole of the small hole component 5 is completely covered by the light spot, ensuring the accuracy of parallel light projection.

[0035] In this embodiment, the light source 1 is a laser, the collimating optical path assembly consists of a concave lens 2 and a convex lens 3, the optical path direction adjustment component is a reflector 4, and the imaging device 6 is a CCD imaging device, which has the characteristics of simple structure and low cost.

[0036] like Figure 7 As shown, this embodiment also provides a method for positioning small-hole structural components using parallel light projection, which is implemented based on the above-described device for positioning small-hole structural components using parallel light projection, and includes the following steps:

[0037] Step S1: The laser beam emitted by the light source 1 is collimated using a collimating optical path assembly consisting of a concave lens 2 and a convex lens 3.

[0038] Step S2: Use mirror 4 to adjust the beam direction so that the optical path is adjusted to the position of the matching adjustment assembly hole.

[0039] Step S3: Place the first pinhole component 5 in the optical path so that the through-hole portion of the pinhole component 5 is covered by the entire light spot. Adjust the position of the pinhole component 5 so that the pinhole plane is perpendicular to the light beam. Observe the circular light spot in the imaging device 6 and record the position of the outer ring of the light spot as position one, thus completing the assembly of the first pinhole component 5. Figure 1 As shown in the image.

[0040] Step S4: Install the second pinhole component 5. The beam passes through the second pinhole component 5, and the position of the light spot formed on the imaging device 6 is recorded as position two. Adjust the position of the second pinhole component 5 so that the light spot is circular and concentric with position two, thus completing the assembly of the second pinhole component 5; Figure 2 As shown in the figure. By analogy, multiple small hole components 5 are assembled with high precision to obtain small hole structural components.

[0041] In this embodiment, when only the first small hole component 5 is present, the pattern on the imaging device 6 is as follows: Figure 3 As shown, it is circular. After adding the second small hole component 5, the pattern on the imaging device 6 is as follows. Figure 4 As shown, it is elliptical. By adjusting the position of the second pinhole component 5, the pattern obtained on the imaging device 6 through the second pinhole component 5 is made concentric with the pattern when only the first pinhole component 5 is present, as shown. Figure 5 As shown in the diagram, this ensures the alignment of the two small hole components 5. Similarly, for each new small hole component 5 added, the position of the new small hole component 5 is adjusted so that the pattern obtained on the imaging device 6 through the new small hole component 5 is concentric with the pattern obtained through the previous multiple small hole components 5, thus ensuring the alignment of the multiple small hole components and ultimately completing the high-precision alignment assembly of the small hole structure components.

[0042] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the spirit and technical essence of the invention. Therefore, any simple modifications, equivalent substitutions, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, shall still fall within the scope of protection of the present invention.

Claims

1. A device for positioning small-hole structural components using parallel light projection, characterized in that, The application relates to a coaxial assembly method of a plurality of pinhole components. The application comprises a light source (1), a collimating light path assembly, a light path direction adjusting member and an imaging device (6); the collimating light path assembly is arranged in front of the light source (1), the light path direction adjusting member is arranged in front of the collimating light path assembly, a pinhole component (5) is arranged between the light path direction adjusting member and the imaging device (6), the arrangement direction of the collimating light path assembly is perpendicular to the arrangement direction of the pinhole component (5), the pinhole component (5) is arranged below the light path direction adjusting member, and the imaging device (6) is arranged below the pinhole component (5); the collimating light path assembly is used for collimating the irradiation light emitted by the light source (1), the light path direction adjusting member is used for adjusting the light path direction so that the through hole of the pinhole component (5) is covered by a light spot, and the imaging device (6) is used for recording the light spot position formed by the projection of the through hole of the pinhole component (5) so as to assist coaxial assembly of a plurality of pinhole components (5). The application further comprises an expander mirror (7) arranged between the pinhole component (5) and the imaging device (6).

2. The device for positioning small-hole structural parts using parallel light projection according to claim 1, characterized in that, The aperture of the pinhole component (5) is smaller than the light spot aperture projected by the light path direction adjusting member.

3. The device for positioning small-hole structural parts using parallel light projection according to claim 2, characterized in that, The light source (1) is a laser.

4. The device for positioning small-hole structural parts using parallel light projection according to any one of claims 1 to 3, characterized in that, The collimating light path assembly comprises a concave lens (2) and a convex lens (3).

5. The apparatus for positioning small bore structures using parallel light projection according to claim 4, wherein, The light path direction adjusting member comprises a reflecting mirror (4).

6. The device for positioning small-hole structural parts using parallel light projection according to claim 5, characterized in that, The imaging device (6) comprises a CCD imaging device.

7. The device for positioning small-hole structural parts using parallel light projection according to claim 6, characterized in that, The application comprises the following steps.

8. A method for positioning a small-hole structure using parallel light projection, the method using the device for positioning a small-hole structure using parallel light projection according to any one of claims 1 to 7, characterized by, S1, collimating the light beam emitted by the light source (1) by using the collimating light path assembly; S2, adjusting the light beam direction by using the light path direction adjusting member so that the light path is adjusted to match the position of the adjusted assembly pinhole; S3, arranging the first pinhole component (5) in the light path so that the through hole of the pinhole component (5) is covered by the whole light spot, adjusting the position of the pinhole component (5) so that the pinhole plane is perpendicular to the light beam, observing a circular light spot in the imaging device (6), recording the outer ring position of the light spot as position one, and completing the assembly of the first pinhole component (5); S4, arranging the second pinhole component (5), the light beam passes through the second pinhole component (5), the position of the light spot formed on the imaging device (6) is recorded as position two, and the position of the second pinhole component (5) is adjusted so that the light spot is circular and concentric with position one, thereby completing the assembly of the second pinhole component (5); and the high-precision coaxial assembly of a plurality of pinhole components (5) is sequentially completed, and a pinhole structure member is obtained. ​

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