Optical on-line measurement practical training device

Abstract

The utility model discloses an optical on-line measurement practical training device, which comprises a base. A portal frame; the 3D laser line scanning camera is arranged at the upper part of the portal frame; the linear module is arranged right below the 3D laser line scanning camera; a slide block of the linear module is detachably connected with a placing table; the upper end of the placing table is a plane or is provided with a supporting and positioning structure; a plurality of positioning columns are arranged at the lower end of the placing table; a locking plate is connected to the sliding block in a sliding mode. The workpiece can be rapidly measured, meanwhile, the requirement for environment illumination is low, use is convenient and rapid, and the measurement result is accurate. And moreover, according to the workpiece to be measured, the specified placing table can be quickly disassembled and replaced, so that the application range and the compatibility are increased. Meanwhile, calibration paper is arranged on the placement table, accidental errors are prevented from being generated, generated measurement data are more fairness, and the device is more suitable for the use requirements of industrial machinery and assembly bench worker competitions.

Description

Technical Field

[0001] This utility model belongs to the field of teaching instrument technology, and in particular relates to an online optical measurement training device. Background Technology

[0002] In various industrial machinery and assembly fitter competitions in China, the accuracy of workpiece measurement is crucial. After each competition, judges measure the precision of the workpieces processed by the contestants. This method is time-consuming and labor-intensive. Therefore, 2D camera photography for workpiece measurement emerged, but this method has high environmental requirements and cannot measure height or depth. Later, 3D vision measurement solutions were introduced, but these have extremely high requirements for ambient lighting, and the accuracy of 3D vision cannot meet the precision requirements of these competitions.

[0003] Chinese patent document CN221445857U discloses a line scanning inspection device, including a frame, a line scanning camera, and a drive unit. A product platform is mounted on the frame, and a horizontal guide rail is located on the upper part of the frame. The drive unit is mounted on the frame, and the line scanning camera is connected to the output end of the drive unit and slidably connected to the horizontal guide rail. The drive unit drives the line scanning camera to reciprocate above the product platform. When it is necessary to photograph and inspect products such as FPCs, the product is placed on the product platform, and the drive unit is activated, causing the line scanning camera to reciprocate above the product platform. During its movement, the line scanning camera can photograph the product placed on the platform, capturing clear, complete, and high-resolution product images. This facilitates clear inspection and identification of product quality, enables data traceability, and lays the foundation for enterprises to achieve electronic production management and comprehensive product quality control.

[0004] The above-mentioned patented solutions are applicable to specific workpieces or workpieces of specific categories. However, in industrial machinery and assembly fitter competitions, on the one hand, there are many types of workpieces, different competitions and events, and the setting of preliminary and semi-final rounds; on the other hand, the workpieces have complex structures. In order to highlight processing capabilities, competition workpieces are often more complex than regular workpieces, and may even be unable to be laid flat, requiring the setting of supports. Obviously, the above-mentioned technical solutions cannot meet the usage requirements of industrial machinery and assembly fitter competitions. Utility Model Content

[0005] To overcome the technical problem that existing line scanning inspection devices are only applicable to specific types of workpieces and cannot be easily compatible with multiple types of workpieces and workpieces with complex structures, one objective of this utility model is to provide an optical online measurement training device. When the linear module moves the workpiece, the 3D laser line scanning camera scans the workpiece. The workpiece placement stage set on the linear module is easy to disassemble and can be selected according to the type of planar or supporting structure of the workpiece being measured, which increases the applicability and compatibility, and facilitates switching and use.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an optical online measurement training device, comprising a base; a gantry frame, the gantry frame being disposed on the upper end of the base; a 3D laser line scanning camera, the 3D laser line scanning camera being disposed on the upper part of the gantry frame; and a linear module, the linear module being disposed on the upper end of the base and located directly below the 3D laser line scanning camera; wherein, a placement platform is detachably connected to the slider of the linear module; the upper end of the placement platform is a plane or is provided with a support and positioning structure; a plurality of evenly distributed positioning posts are provided at the lower end of the placement platform; and a locking plate for engaging the positioning posts is slidably connected to the slider.

[0007] Furthermore, a calibration paper is provided at the upper end of the placement platform; elastic clamps are provided at both ends of the placement platform; the elastic clamps are used to clamp the two ends of the calibration paper.

[0008] The calibration paper has a grid or positioning baseline. All measured workpieces are placed in the same position on the platform, which can eliminate the generation of random errors and further improve the accuracy of measurement. At the same time, the calibration paper is also easy to replace.

[0009] Furthermore, the upper end of the base is provided with two fixing plates; the upper end of the fixing plates is detachably connected to two symmetrically arranged clamping plates; the linear module is disposed on the upper end of the fixing plates and is located between the two clamping plates.

[0010] The position of the linear module can be adjusted by the two clamps, so that the placement stage can achieve scanning by the 3D laser line scanning camera with the shortest movement distance, which helps to improve scanning efficiency and save operation time.

[0011] Furthermore, the upper end of the base is provided with a housing; the 3D laser line scanning camera is located inside the housing; the front end of the housing is provided with an opening; the middle part of the linear module is located inside the opening.

[0012] Specifically, a control screen is inclinedly arranged at the front end of the housing; a cantilever is arranged on the side wall of the housing; and a display is arranged at the end of the cantilever.

[0013] Furthermore, the slider is provided with a mounting plate; the upper end of the mounting plate is provided with multiple insertion holes; the positioning post is located in the insertion holes; the locking plate is slidably connected to the lower end of the slider; the locking plate extends outward from the periphery of the slider.

[0014] Specifically, a slot is provided on the lower part of the outer wall of the positioning post; multiple protrusions are provided on the locking plate; a spring is provided between the locking plate and the mounting plate; the spring force is used to make the protrusions slide into the slot.

[0015] Specifically, multiple sliding posts are provided on both sides of the mounting plate; multiple evenly distributed through slots are provided on the locking plate; and the sliding posts are located in the through slots.

[0016] Furthermore, a stud is provided at the upper end of the positioning post; the stud is threadedly connected to the lower end of the placement platform; two notches are symmetrically provided on the outer wall of the positioning post; the notches facilitate the tightening of the stud to the lower end of the placement platform.

[0017] Furthermore, a Grade 00 marble is placed on the base; the Grade 00 marble is used to calibrate the 3D laser line scanning camera.

[0018] Compared to existing technologies, the advantages of this invention are as follows: This invention can quickly determine the flatness, planar dimensions, height, and depth of a workpiece, while having lower requirements for ambient lighting, being convenient and quick to use, and providing accurate measurement results. Furthermore, the designated placement platform can be quickly disassembled and replaced according to the workpiece to be measured, increasing its applicability and compatibility. Additionally, calibration paper is placed on the placement platform to prevent accidental errors, making the generated measurement data more impartial and better suited for the needs of industrial machinery and assembly fitter competitions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0021] Figure 3 This is a schematic diagram of the linear module of this utility model;

[0022] Figure 4 This is a structural schematic diagram of the mounting plate and placement platform of this utility model;

[0023] Figure 5 This is an exploded structural diagram of the mounting plate and placement platform of this utility model.

[0024] In the diagram: 11. Base; 12. Gantry; 21. Housing; 211. Opening; 22. Control panel; 31. Cantilever; 32. Display; 41. Linear module; 411. Slider; 42. Fixing plate; 43. Clamping plate; 5. 3D laser line scanning camera; 61. Mounting plate; 611. Socket; 612. Sliding column; 62. Placement platform; 63. Locking plate; 631. Raised strip; 632. Through groove; 633. Anti-slip texture; 64. Elastic clamping rod; 65. Spring; 66. Positioning column; 661. Slot; 662. Notch; 663. Stud; 7. Grade 00 marble. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. They should not be construed as limiting the specific protection scope of this utility model.

[0027] 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. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In this description of the utility model, "a number" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, terms such as "set" and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] See Figures 1-5 An online optical measurement training device includes a base 11, a gantry 12 mounted on the upper end of the base 11, a 3D laser line scanner 5 mounted on the upper part of the gantry 12, and a linear module 41 mounted on the upper end of the base 11; the linear module 41 is located directly below the 3D laser line scanner 5. The linear module 41 includes a track base, a slider 411 slidably connected to the track base, and a drive motor mounted at one end of the track base for driving the slider 411 to slide.

[0030] The upper end of the slider 411 is provided with a mounting plate 61; the upper end of the mounting plate 61 is detachably connected to a placement platform 62; the lower end of the placement platform 62 is provided with four evenly distributed positioning posts 66; the upper end of the mounting plate 61 is provided with multiple insertion holes 611; the positioning posts 66 are located in the insertion holes 611; the upper end of the placement platform 62 is a plane or is provided with a support and positioning structure.

[0031] The upper end of the positioning post 66 is provided with a stud 663; the stud 663 is threaded to the lower end of the placement platform 62; the outer wall of the positioning post 66 is symmetrically provided with two notches 662; the lower part of the outer wall of the positioning post 66 is provided with a slot 661.

[0032] The mounting plate 61 is horizontally slidably connected to a locking plate 63 at its lower end; the locking plate 63 is provided with four slots; a protrusion 631 is provided in the slot; a spring 65 is provided between the locking plate 63 and the mounting plate 61; the elastic force of the spring 65 is used to make the protrusion 631 slide into the slot 661.

[0033] The mounting plate 61 has two sliding posts 612 on each side; the locking plate 63 has four evenly distributed through slots 632; the sliding posts 612 are located in the through slots 632; the locking plate 63 has anti-slip textures 633 on each side; the locking plate 63 extends outward from the surrounding area of ​​the slider 411.

[0034] The upper end of the placement platform 62 is provided with calibration paper; the calibration paper is provided with a grid or positioning baseline; the two ends of the placement platform 62 are provided with elastic clamping rods 64; the elastic clamping rods 64 are used to clamp the two ends of the calibration paper; the two ends of the elastic clamping rods 64 are respectively rotatably connected to the placement platform 62; a torsion spring is provided between the elastic clamping rods 64 and the placement platform 62, or the rotation axes of the two ends of the elastic clamping rods 64 are parallel and do not coincide, utilizing the elasticity of the elastic clamping rods 64 themselves.

[0035] The base 11 has a housing 21 on its upper end; the 3D laser line scanning camera 5 is located inside the housing 21; the front end of the housing 21 has an opening 211; the middle part of the linear module 41 is located inside the opening 211; a control screen 22 is inclinedly arranged at the front end of the housing 21; the control screen 22 is used to control the linear module 41 and can also display the detection data in real time; a cantilever 31 is arranged on the side wall of the housing 21; a display 32 is arranged at the end of the cantilever 31; the display 32 is used to display the measurement results in real time and provide real-time feedback on the data generated during the measurement process.

[0036] The base 11 has two fixing plates 42 on its upper end; the fixing plates 42 are detachably connected to two symmetrically arranged clamping plates 43; the linear module 41 is disposed on the upper end of the fixing plates 42 and is located between the two clamping plates 43.

[0037] The base 11 is equipped with a 00-grade marble 7; it can be used for real-time calibration of a 3D laser line scanning camera and can also be applied to high-precision workpiece measurement.

[0038] The device is protected by an integrated aluminum alloy shell 21 to prevent deformation or even cracking caused by large temperature differences. The display 32 can view the 3D image of the workpiece being inspected in real time, and can also view the real-time data of the 3D laser line scanning camera during operation. It can meet the needs of industrial applications and also allow scholars to understand the working principle of the 3D laser line scanning camera.

[0039] Compared to traditional 2D and 3D cameras, high-precision 3D laser line scanning cameras offer higher accuracy and stability. They have lower requirements for ambient light and, using line scanning, can obtain more precise workpiece imaging, with the measured planar dimensions and depth accuracy far exceeding that of traditional 3D cameras. The high-precision linear module can meet the requirements for measuring a wide range of workpieces. The linear module is equipped with a high-precision placement stage, ensuring minimal impact from errors during the workpiece measurement process. The use of a gantry 12 provides greater stability and reliability, is unaffected by the environment, and can be used for measurement without the need for overall leveling.

[0040] This training device has a fast measurement speed; the linear module can complete the measurement and calculate the result in one run, which greatly saves measurement time.

[0041] Select the corresponding placement stage 62 according to the workpiece to be measured, press the locking plate 63, insert the positioning post 66 of the placement stage 62 into the insertion hole 611, and then release the locking plate 63. Under the elastic force of the spring 65, the locking plate 63 causes the protrusion 631 to enter the slot 661. Lay the calibration paper flat on the placement stage 62 and press both ends of the calibration paper onto the elastic clamping rod 64. After wiping the workpiece to be measured clean, place it on the placement stage 62 and align the workpiece with the markings on the calibration paper. Run the linear module 41, and the 3D laser line scanning camera 5 will automatically start measuring and transmit the captured 3D image to the display 32. After calculation by the controller, the planar dimension data and depth dimension data of the workpiece to be measured can be obtained.

[0042] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. An online optical measurement training device, characterized in that: Includes a base; The gantry frame is mounted on the upper end of the base; A 3D laser line scanning camera is mounted on the upper part of the gantry. A linear module is disposed on the upper end of the base and located directly below the 3D laser line scanning camera; The linear module has a detachable platform connected to its slider; the upper end of the platform is flat or has a support and positioning structure; the lower end of the platform has multiple evenly distributed positioning posts; and the slider has a locking plate for engaging the positioning posts.

2. The training device as described in claim 1, characterized in that: The upper end of the placement platform is provided with calibration paper; both ends of the placement platform are provided with elastic clamping rods; the elastic clamping rods are used to clamp both ends of the calibration paper.

3. The training device as described in any one of claims 1-2, characterized in that: The base has two fixing plates at its upper end; the upper end of the fixing plates is detachably connected to two symmetrically arranged clamping plates; the linear module is disposed on the upper end of the fixing plates and is located between the two clamping plates.

4. The training device as described in any one of claims 1-2, characterized in that: The base has an outer shell at its upper end; the 3D laser line scanning camera is located inside the outer shell; the front end of the outer shell has an opening; the middle part of the linear module is located inside the opening.

5. The training device as described in claim 4, characterized in that: A control panel is inclinedly arranged at the front end of the housing; a cantilever is arranged on the side wall of the housing; and a display is arranged at the end of the cantilever.

6. The training device as described in any one of claims 1-2, characterized in that: The slider is provided with a mounting plate; the upper end of the mounting plate is provided with multiple insertion holes; the positioning post is located in the insertion holes; the locking plate is slidably connected to the lower end of the slider; the locking plate extends outward from the periphery of the slider.

7. The training device as described in claim 6, characterized in that: The lower part of the outer wall of the positioning post is provided with a slot; the locking plate is provided with multiple protrusions; a spring is provided between the locking plate and the mounting plate; the elastic force of the spring is used to make the protrusions slide into the slot.

8. The training device as described in claim 6, characterized in that: Multiple sliding posts are provided on both sides of the mounting plate; multiple evenly distributed through slots are provided on the locking plate; the sliding posts are located in the through slots.

9. The training device as described in any one of claims 1-2, characterized in that: The upper end of the positioning post is provided with a stud; the stud is threaded to the lower end of the placement platform; the outer wall of the positioning post is symmetrically provided with two notches.

10. The training device as described in any one of claims 1-2, characterized in that: A grade 00 marble is placed on the base; the grade 00 marble is used to calibrate the 3D laser line scanning camera.

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