Laser radar optical assembly part detection tool

Abstract

The utility model relates to the technical field of detection tools, and discloses a laser radar optical assembly part detection tool which comprises a detection guide rail, a detection support and a detection background plate, the detection background plate and the detection support are arranged on the detection guide rail, the distance between the detection background plate and the detection support is adjustable, and a front tool table and a rear fixed table are arranged on the detection support. The front tool table is provided with a workpiece mounting base which is inserted in an up-down sliding mode, the workpiece mounting base is used for mounting an optical assembly part to be detected, a guide column is arranged between the front tool table and the rear fixing table, a detection holder is arranged on the guide column in a sliding mode, and a detection light source is arranged on the detection holder. A spring is arranged on the guide column between the detection holder and the rear workbench, a trapezoidal prismatic table is arranged on one side, facing the detection holder, of the workpiece mounting seat, and a guide wheel attached to the trapezoidal prismatic table is arranged on the detection holder. By detecting whether the image on the background plate changes or not, it can be effectively detected that elements are changed or an unqualified optical assembly to be detected is assembled.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection tooling and relates to a laser radar optical assembly detection tooling. Background Art

[0002] Laser ranging radar is a radar system that emits laser to detect the position, speed and other characteristic quantities of the target. Its working principle is to emit laser to the target, and then process and calculate the received signal reflected from the target (target echo), so as to obtain the target's distance, direction and other related information.

[0003] In order to make the laser be emitted and received better, an optical assembly (lens group) is set at the front end of the emitting components and the receiving coms to change the direction of the light so that the angles of the emitted and received light meet the needs of the product.

[0004] Optical assemblies generally include lenses and structural parts for fixing lenses. Since there are errors in the processing of lenses and structural parts in optical assemblies, and there are also errors in the assembly of lenses and structural parts, when the cumulative errors exceed the design allowable range, the products produced are basically defective. Therefore, it is necessary to inspect the optical assemblies.

[0005] In the prior art, the inspection of optical assemblies is carried out separately. Optical lenses need to be individually inspected for important parameters such as diameter and focal length, and structural parts need to be comprehensively measured for various important dimensions. However, during actual production and inspection, the pass rate of a single optical device cannot ensure that the assembled optical assembly still meets the performance requirements. Unqualified optical assemblies cannot be detected intuitively, and usually in the final stage of the production process, after being assembled into a complete radar instrument, they are scrapped or processed as defective products of the whole machine because they cannot pass the performance test. This will seriously waste production resources. Especially in the early stages of large-scale production, process instability may cause a large proportion of optical assemblies in the entire current batch to be unqualified, which requires a device that can detect the overall performance of optical assemblies. Utility Model Content

[0006] (I) Purpose of the utility model

[0007] The purpose of the utility model is to provide a laser radar optical assembly detection tool to improve the optical assembly detection efficiency.

[0008] (II) Technical solution

[0009] In order to solve the above technical problems, the utility model provides a laser radar optical assembly detection tool, comprising:

[0010] Detection guide rails;

[0011] A detection bracket, wherein a front tooling table and a rear fixed table are arranged on the detection bracket, a workpiece mounting seat that slides up and down and is inserted is arranged on the front tooling table, and the workpiece mounting seat is used to mount the optical assembly to be tested, a guide column is arranged between the front tooling table and the rear fixed table, a detection platform is slidably arranged on the guide column, a detection light source is arranged on the detection platform, a spring is arranged on the guide column between the detection platform and the rear workbench, a trapezoidal prism is arranged on the side of the workpiece mounting seat facing the detection platform, and the detection platform is provided with a guide wheel that fits with the trapezoidal prism;

[0012] A detection background plate, wherein the detection background plate and the detection bracket are arranged on the detection guide rail, and the distance between the detection background plate and the detection bracket is adjustable.

[0013] Optionally, the front workbench includes a bottom plate and side plates, a pair of side plates are integrally formed on both sides of the bottom plate, and the side plates are provided with L-shaped guide grooves from top to bottom, and the L-shaped guide grooves are used to guide the workpiece mounting seat to slide.

[0014] Optionally, the workpiece mounting seat includes a rear back plate and a front mounting panel, the rear back plate is plugged into the L-shaped guide groove, and the front mounting panel is used to mount the optical assembly to be measured.

[0015] Optionally, the rear back panel is provided with a stepped hole, the side of the stepped hole facing the front installation panel is a small-diameter hole, and the side of the stepped hole facing away from the front installation panel is a large-diameter hole.

[0016] Optionally, a stepped shaft sleeve shell is disposed outside the detection light source, the stepped shaft sleeve shell matches the step hole, and the stepped shaft sleeve shell is provided with a light source guide hole for guiding the detection light source to irradiate the detection background plate.

[0017] Optionally, a workpiece installation cavity is provided on a side of the front installation panel facing the detection background plate, and the workpiece installation cavity is communicated with the step hole.

[0018] Optionally, the detection light source is an infrared light source or a visible light source.

[0019] (III) Beneficial effects

[0020] The laser radar optical assembly inspection tooling provided by the above technical solution detects that the light source is imaged onto a background plate at a corresponding distance through the optical assembly to be tested. When the lens or structural parts in the optical assembly to be tested change or are not precisely assembled, causing the optical system to be out of focus, the image on the background plate will change accordingly. By discovering the changes, it is possible to effectively detect whether the component has been altered or an unqualified optical assembly to be tested has been assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the quick-release positioning of the seeker provided by the embodiment of the utility model at one viewing angle;

[0022] Figure 2 A schematic structural diagram of the laser radar optical assembly detection tooling provided in an embodiment of the utility model from another perspective.

[0023] Explanation of the numbers in the accompanying drawings: 1-guide rail, 2-detection background plate, 3-detection bracket, 4-front workbench, 5-L-shaped guide groove, 6-rear fixed table, 7-trapezoidal prism, 8-step hole, 9-guide column, 10-detection pan-tilt head, 11-detection light source, 12-step shaft sleeve shell, 13-spring, 14-optical assembly to be tested, 15-L-shaped bracket, 16-guide wheel, 17-workpiece mounting seat. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0028] Refer to the attached Figure 1 to Figure 2 As shown, the laser radar optical assembly detection tooling of this embodiment includes a detection guide rail 1, a detection bracket 3, a front tooling table 4, a rear fixed table 6, a workpiece mounting seat, a detection gimbal 10 and a detection background plate 2.

[0029] Specifically:

[0030] The detection bracket 3 and the detection background plate 2 are both arranged on the detection guide rail 1, wherein the detection bracket 3 is fixedly connected to the detection guide rail 1, and the detection background plate 2 is slidably connected to the detection guide rail 1, so that the distance between the detection bracket 3 and the detection guide rail 1 can be adjusted.

[0031] The front tooling table 4 and the rear fixed table 6 are arranged on the detection bracket 3, the front tooling table 4 is located on one side of the detection background plate 2, and the rear fixed table 6 is located on the side away from the detection background plate 2. The front tooling table 4 includes a bottom plate and a side plate. A pair of side plates are integrally formed on both sides of the bottom plate to form a U-shaped frame structure. The side plates are provided with L-shaped guide grooves 5 from top to bottom. The workpiece mounting seat is inserted into the front tooling table 4 from the L-shaped guide grooves 5 and moves up and down under the guidance of the L-shaped guide grooves 5.

[0032] In the above, the workpiece mounting seat includes a rear back plate and a front mounting panel, the front mounting panel and the rear back plate are integrally formed, and the rear back plate has an L-shaped side edge that cooperates with the L-shaped guide groove 5, and the rear back plate is provided with a step hole 8, the side of the step hole 8 facing the front mounting panel is a small diameter hole, and the side of the step hole 8 facing away from the front mounting panel is a large diameter hole. The front mounting panel is located between the side panels, and the side of the front mounting panel facing the detection background plate 2 is provided with a workpiece mounting cavity 7, the workpiece mounting cavity 7 is connected to the step hole 8, and the inner wall of the workpiece mounting cavity 7 is provided with a rubber pad, and the optical assembly to be tested is embedded in the workpiece mounting cavity 7 during detection, and the rubber pad can be used to protect the optical assembly to be tested and fix the optical assembly to be tested in the workpiece mounting cavity 7.

[0033] A guide column 9 is arranged between the front workbench 4 and the rear fixed table 6, and a detection platform 10 is slidably arranged on the guide column 9. In the initial state, the detection platform 10 is close to one side of the front workbench 4. A detection light source 11 is arranged on the detection platform 10. The detection light source 11 is the original infrared light source of the infrared radar, and can also be a visible light source with a wavelength of 400-760nm. A stepped shaft sleeve shell 12 is arranged outside the detection light source 11, and the stepped shaft sleeve shell 12 matches the step hole 8. The stepped shaft sleeve shell 12 is provided with a light source guide hole for guiding the detection light source 11 to be emitted toward the detection background plate 2. During detection, the stepped shaft sleeve is inserted into the step hole 8.

[0034] In the above description, the distance between the detection bracket 3 and the detection background plate 2 is adjustable, so that the distance between the detection light source 11 and the detection background plate 2 can be adjusted according to the focal length of the optical assembly 14 to be tested.

[0035] A spring 13 is provided on the guide column 9 between the detection platform 10 and the rear workbench, a trapezoidal prism 17 is provided on the L-shaped side edge of the workpiece mounting seat facing the detection platform 10, an L-shaped bracket 15 is provided on the detection platform 10, and a guide wheel 16 is provided on the L-shaped bracket 15, and the guide wheel 16 always keeps in contact with the trapezoidal prism 17.

[0036] Based on the above content, the embodiment of the present application provides a laser radar optical assembly detection tool, and its method of use is:

[0037] First, the optical assembly 14 to be tested is embedded in the tooling mounting cavity 7, and then the workpiece mounting seat is inserted from top to bottom into the front tooling table 4 through the L-shaped guide groove 5. Since the trapezoidal prism 17 always keeps in contact with the guide wheel 16, and due to the existence of the spring 13, during the process of inserting the workpiece mounting seat from top to bottom, the detection platform 10 first moves backward, and finally the detection platform 10 is reset forward under the action of the spring 13. When the workpiece mounting seat is fully inserted to the lowest position, the detection platform 10 is reset to the initial position. At this time, the stepped shaft sleeve is inserted into the step hole 8, and the detection light source 11 is located at the focus of the optical assembly 14 to be tested.

[0038] It can be seen that the laser radar optical assembly detection tooling provided in the embodiment of the present application has a detection light source 11 that is imaged on the detection background plate 2 at a corresponding distance through the optical assembly 14 to be tested. When detecting the optical structure and assembly state of the emitting part in the infrared radar optical assembly, the imaging light spot on the detection background plate 2 is the state of the emitting light spot during actual radar operation. When the lens or structural parts in the optical assembly 14 to be tested change or are not precisely assembled, causing the optical system to lose focus, the light spot on the detection background plate 2 will change accordingly. When the operator finds the change, he can quickly and effectively detect the optical assembly 14 to be tested whose components have been changed or whose assembly is unqualified. Ensure the accuracy of assembly and positioning of each component of the optical assembly, facilitate mass production of products, save production resources, and improve product yield.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A laser radar optical assembly detection tool, characterized in that: include: Detection guide rail (1); A detection bracket (3), wherein the detection bracket (3) is provided with a front tooling table (4) and a rear fixed table (6), the front tooling table (4) is provided with a workpiece mounting seat that can be inserted by sliding up and down, and the workpiece mounting seat is used to mount the optical assembly to be tested, a guide column (9) is provided between the front tooling table (4) and the rear fixed table (6), a detection platform (10) is slidably provided on the guide column (9), a detection light source (11) is provided on the detection platform (10), a spring (13) is provided on the guide column (9) between the detection platform (10) and the rear workbench, a trapezoidal prism (17) is provided on the side of the workpiece mounting seat facing the detection platform (10), and the detection platform (10) is provided with a guide wheel (16) that fits the trapezoidal prism (17); A detection background plate (2), wherein the detection background plate (2) and the detection bracket (3) are arranged on the detection guide rail (1), and the distance between the detection background plate (2) and the detection bracket (3) is adjustable.

2. The laser radar optical assembly detection tooling according to claim 1, characterized in that: The front tooling table (4) comprises a bottom plate and side plates, a pair of side plates are integrally formed on both sides of the bottom plate, and the side plates are provided with L-shaped guide grooves (5) from top to bottom, and the L-shaped guide grooves (5) are used to guide the workpiece mounting seat to slide.

3. The laser radar optical assembly detection tooling according to claim 2, characterized in that: The workpiece mounting seat comprises a rear back plate and a front mounting panel, the rear back plate is plugged into the L-shaped guide groove (5), and the front mounting panel is used to mount the optical assembly to be measured.

4. The laser radar optical assembly detection tooling according to claim 3, characterized in that: The front installation panel and the rear back panel are integrally formed, and the rear back panel has an L-shaped side edge that matches the L-shaped guide groove (5).

5. The laser radar optical assembly detection tooling according to claim 4, characterized in that: The rear back panel is provided with a stepped hole (8), the side of the stepped hole (8) facing the front installation panel is a small-diameter hole, and the side of the stepped hole (8) facing away from the front installation panel is a large-diameter hole.

6. The laser radar optical assembly detection tooling according to claim 5, characterized in that: A stepped shaft sleeve (12) is arranged outside the detection light source (11), the stepped shaft sleeve (12) matches the step hole (8), and the stepped shaft sleeve (12) is provided with a light source guide hole for guiding the detection light source (11) to irradiate the detection background plate (2).

7. The laser radar optical assembly detection tooling according to claim 6, characterized in that: A workpiece mounting cavity (7) is provided on a side of the front mounting panel facing the detection background plate (2), and the workpiece mounting cavity (7) is communicated with the step hole (8).

8. The laser radar optical assembly detection tooling according to claim 7, characterized in that: The inner wall of the workpiece mounting cavity (7) is provided with a rubber pad, and the optical assembly to be tested is embedded in the workpiece mounting cavity (7) during testing.

9. The laser radar optical assembly detection tooling according to claim 6, characterized in that: The detection light source (11) is an infrared light source or a visible light source.

10. The laser radar optical assembly detection tooling according to claim 9, characterized in that: The detection light source (11) is a visible light source of 400-760nm.

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