Metal geometric dimension detection device

Abstract

The invention discloses a metal geometric dimension detection device. The detection device comprises a device body, a measuring platform and a detection assembly, the measuring platform is arranged on the device body and provided with a measuring plane, the detection assembly comprises a movable frame, a camera, a backlight source and a sensor set, and the camera, the backlight source and the sensor set are arranged on the movable frame. The movable frame can move in the length direction and the width direction of the measuring plane, the camera and the backlight source are oppositely arranged, the sensor group comprises a first spectral confocal sensor and a second spectral confocal sensor which are oppositely arranged, and the camera and the first spectral confocal sensor are located on one side of the measuring plane. And the backlight source and the second spectrum confocal sensor are positioned on the other side of the measuring plane. Through cooperation of the spectrum confocal sensor and the industrial camera, high-precision measurement is carried out on the thickness, length and width of the metal through the optical principle, the metal surface does not need to be contacted, damage to a metal sample is avoided, and the measurement cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of automated detection, and in particular to a metal geometric dimension detection device. Background Art

[0002] Metal thickness measurement is a crucial component of industrial manufacturing and quality control, and is widely used in aerospace, automotive, electronic equipment, building materials, and other fields. Accurately measuring metal thickness is crucial for ensuring product quality, optimizing production processes, and reducing costs. Related technologies include ultrasonic, eddy current, and X-ray measurement. However, these methods have limitations in practical applications: some optical measurement methods have a narrow measurement range, making them difficult to adapt to metal materials of varying thicknesses, and their measurement accuracy is low. Furthermore, most methods require contact with the metal object being measured, which can easily damage the metal sample and increase the cost of measurement. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes a metal geometric dimension detection device that combines spectral confocal and vision.

[0005] The metal geometric dimension detection device according to the embodiment of the present invention comprises:

[0006] device body;

[0007] A measuring platform, the measuring platform being provided on the device body and having a measuring plane, the measuring plane being used for placing the metal to be measured and the standard metal;

[0008] A detection component includes a mobile frame and a camera, a backlight source, and a sensor group arranged on the mobile frame. The mobile frame is mounted on the device body and is movable along the length and width directions of the measurement plane. The camera and the backlight source are arranged relative to each other. The sensor group includes a first spectral confocal sensor and a second spectral confocal sensor arranged relative to each other, wherein the camera and the first spectral confocal sensor are located on one side of the measurement plane, and the backlight source and the second spectral confocal sensor are located on the other side of the measurement plane.

[0009] The metal geometric dimension detection device of the embodiment of the present invention can achieve high-precision measurement of metal thickness and length and width through the cooperation of a spectral confocal sensor and an industrial camera. The spectral confocal technology utilizes the characteristics of light of different wavelengths focusing at different depths to ensure that the measurement accuracy reaches the micron or even nanometer level, thereby improving the accuracy of metal measurement. Secondly, the measurement is performed based on optical principles without contacting the metal surface, avoiding damage to the metal sample and saving measurement costs.

[0010] The mobile mount's position can be flexibly adjusted to accommodate metal samples of varying sizes and shapes, ensuring precise measurement positioning. The backlight provides uniform lighting conditions for measurement, ensuring the industrial camera and spectral confocal sensor can capture clear images and data, improving measurement accuracy.

[0011] In some embodiments, the measuring platform includes a support frame, a standard gauge block placement plate and multiple support rods arranged on the support frame. The support frame is connected to the device body, the height of the support frame is adjustable, and the multiple support rods are arranged at intervals along the length direction of the support frame.

[0012] In some embodiments, the mobile frame includes a base plate, a support plate, a first mounting plate and a second mounting plate, the support plate is connected to the base plate, the support plate is generally C-shaped, the first mounting plate is connected to the upper end of the support plate, the camera and the first spectral confocal sensor are arranged on the first mounting plate, the second mounting plate is connected to the lower end of the support plate, and the backlight source and the second spectral confocal sensor are arranged on the second mounting plate.

[0013] In some embodiments, reinforcing ribs are provided between the support plate and the bottom plate, and between the support plate and the first mounting plate and the second mounting plate.

[0014] In some embodiments, a first sliding plate and a first adjusting bolt are provided on the first mounting plate, the first sliding plate is movable in a vertical direction, the first adjusting bolt is connected to the first sliding plate, the first adjusting bolt is used to adjust the position of the first sliding plate, and the first spectral confocal sensor is detachably connected to the first sliding plate;

[0015] A second sliding plate and a second adjusting bolt are provided on the second mounting plate. The second sliding plate is movable in a vertical direction. The second adjusting bolt is connected to the second sliding plate. The second adjusting bolt is used to adjust the position of the second sliding plate. The second spectral confocal sensor is detachably connected to the second sliding plate.

[0016] In some embodiments, the detection component further includes a first guide rail and a second guide rail, the first guide rail is arranged on the device body, the second guide rail is arranged on the first guide rail, the second guide rail is orthogonal to the first guide rail, and the bottom plate is arranged on the second guide rail.

[0017] In some embodiments, there are two sensor groups, and the two sensor groups are located on both sides of the camera respectively.

[0018] In some embodiments, an electric control box is provided on the device body, and the electric control box is connected to the detection component via a circuit to control the operation of the detection component.

[0019] In some embodiments, a terminal bracket is provided on the device body, and a display is provided on the terminal bracket, and the display is used to display the detection data of the detection component.

[0020] In some embodiments, the bottom of the device body is provided with a plurality of shock-absorbing legs and a plurality of universal moving wheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a metal geometric dimension detection device according to an embodiment of the present invention.

[0022] Figure 2 It is a front view schematic diagram of a metal geometric dimension detection device according to an embodiment of the present invention.

[0023] Figure 3 It is a schematic right view of a metal geometric dimension detection device according to an embodiment of the present invention.

[0024] Figure 4 Schematic diagram of the structure of the measurement platform according to an embodiment of the present invention.

[0025] Figure 5 It is a structural diagram of a detection component according to an embodiment of the present invention.

[0026] Figure 6 It is a partial structural diagram of the detection component of an embodiment of the present invention.

[0027] Figure 7 It is a partial structural diagram of the detection component of an embodiment of the present invention from another perspective.

[0028] Reference numerals:

[0029] 1-Device body, 11-Electrical control box, 12-Terminal bracket, 13-Display, 14-Shock-absorbing legs, 15-Vanxiang moving wheels, 2-Measuring platform, 21-Support frame, 22-Standard gauge block placement plate, 23-Support rod, 201-Measuring plane, 3-Detection assembly, 31-Moving frame, 311-Base plate, 312-Support plate, 313-First mounting plate, 314-Second mounting plate, 315-Reinforcement rib plate, 316-First sliding plate, 317-First adjusting bolt, 318-Second sliding plate, 319-Second adjusting bolt, 32-Camera, 33-Backlight source, 34-Sensor group, 341-First spectral confocal sensor, 342-Second spectral confocal sensor, 35-First guide rail, 36-Second guide rail. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] The metal geometric dimension detection device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0032] like Figures 1 to 7 As shown, the metal geometric dimension detection device according to the embodiment of the present invention includes a device body 1 , a measuring platform 2 and a detection component 3 .

[0033] The device body 1 is a cabinet structure, with shock-absorbing legs 14 and universal moving wheels 15 at the four corners of the bottom. During measurement, the shock-absorbing legs 14 are supported on the ground, and the shock-absorbing effect of the shock-absorbing legs 14 reduces the shaking caused by the operation of the detection assembly 3. When moving the detection device of this embodiment of the present invention, the shock-absorbing legs 14 are retracted, and the universal moving wheels 15 enable the device to move normally.

[0034] The measuring platform 2 is arranged on the device body 1 and arranged in the left-right direction. The upper plane of the measuring platform 2 is the measuring plane 201, and the measuring plane 201 is used to place the metal to be measured and the standard metal.

[0035] The detection assembly 3 includes a mobile frame 31, a camera 32, a backlight 33, and a sensor group 34 mounted on the mobile frame 31. The mobile frame 31 is mounted on the device body 1 and is movable in the left-right and front-back directions. The camera 32 and the backlight 33 are arranged relative to each other in the vertical direction. The sensor group 34 includes a first spectral confocal sensor 341 and a second spectral confocal sensor 342, which are arranged relative to each other in the vertical direction. The camera 32 and the first spectral confocal sensor 341 are located above the measurement plane 201, while the backlight 33 and the second spectral confocal sensor 342 are located below the measurement plane 201.

[0036] The working principle of the detection device according to the embodiment of the present invention is briefly described below.

[0037] First, input the coordinates of the location where the photo is taken into the terminal processing system of the device, place a standard metal with a size close to that of the metal to be measured on the measuring plane 201, then start the detection component 3, move the camera 32 to the A coordinate to take a photo, save the picture 1, then move the camera 32 to the B coordinate to take a photo, save the picture 2, and calculate the length and width of the standard metal using the formula. The calculation formula is:

[0038] F0V y is the camera’s field of view;

[0039] Among them, L O is the set shooting position difference, L is the measured value before correction; P A and P B is the offset distance (in pixels) between the pixel coordinates of the edge of the standard metal in the image and the pixel center line in the two shots; H is the total number of pixels in the Y direction of the camera.

[0040] The measurement principle for the metal under test is the same as that for the standard metal described above and will not be further elaborated here. The calibrated length and width values ​​of the measured standard metal are entered into the terminal processing system. When the metal under test is subsequently measured, the terminal processing system automatically compares and determines whether the length and width of the metal under test meet the standard values ​​(allowing for a predetermined error range).

[0041] The thickness of the standard metal is set to T, and calibration is performed. The first spectral confocal sensor and the second spectral confocal sensor are read to obtain the A and B values ​​and the temperature W during calibration. Then, the T, A, B, and W values ​​are stored in the terminal processing system. When measuring the metal to be measured, the device moves to the measurement position, waits for 300 milliseconds, and then collects the data of the first spectral confocal sensor and the second spectral confocal sensor to obtain A. ′ 、B ′ 、W ′ The thickness of the metal to be measured is calculated using the formula. The calculation formula is:

[0042] T ′ =(T+A+B)-(A ′ -B ′ )+K×(W ′ -W), K is the temperature difference coefficient;

[0043] A terminal bracket 12 is provided on the device body 1 , and a display 13 is provided on the terminal bracket 12 . The inspector can view the inspection data through the display 13 .

[0044] In summary, the metal geometric dimension detection device of the embodiment of the present invention can achieve high-precision measurement of metal thickness and length and width through the cooperation of the spectral confocal sensor and the industrial camera 32. The spectral confocal technology utilizes the characteristics of light of different wavelengths focusing at different depths to ensure that the measurement accuracy reaches the micron or even nanometer level, thereby improving the accuracy of metal measurement. Secondly, the measurement is performed through optical principles without contacting the metal surface, avoiding damage to the metal sample and saving the measurement cost.

[0045] The position of the mobile frame 31 can be flexibly adjusted to accommodate metal samples of varying sizes and shapes, ensuring precise positioning of the measurement position. Meanwhile, the backlight source 33 provides uniform lighting conditions for measurement, ensuring that the industrial camera 32 and spectral confocal sensor can capture clear images and data, improving measurement accuracy.

[0046] In some embodiments, as Figures 1 to 4 As shown, the measuring platform 2 includes a support frame 21, a standard gauge block placement plate 22 mounted on the support frame 21, and multiple support rods 23. The four legs of the support frame 21 are fixed to the upper surface of the device body 1. The height of the support frame 21 is adjusted by the retractable legs, thereby adjusting the height of the appropriate measuring plane 201. The multiple support rods 23 together form the measuring plane 201.

[0047] During measurement, the metal to be measured is first placed on the standard gauge block placement plate 22 for real-time thickness measurement. If the deviation exceeds the set threshold, the inspector recalibrates.

[0048] In some embodiments, as Figures 5 to 7 As shown, the mobile frame 31 includes a base plate 311, a support plate 312, a first mounting plate 313, and a second mounting plate 314. The support plate 312 is connected to the base plate 311 and is generally C-shaped. The first mounting plate 313 is connected to the upper end of the support plate 312, and the camera 32 and the first spectral confocal sensor 341 are mounted on the first mounting plate 313. The second mounting plate 314 is connected to the lower end of the support plate 312, and the backlight source 33 and the second spectral confocal sensor 342 are mounted on the second mounting plate 314.

[0049] Specifically, protective plates are provided around the first mounting plate 313 and the second mounting plate 314 to enclose the camera 32 and the sensor group 34 and protect them from being directly hit and damaged.

[0050] Furthermore, if Figure 6 and Figure 7 As shown, reinforcing ribs 315 are provided between the support plate 312 and the base plate 311, and between the support plate 312 and the first mounting plate 313 and the second mounting plate 314, which play a stabilizing role and reduce the swinging of the support plate 312 during movement, thereby avoiding the sensor group 34 being not perpendicular to the metal to be measured, causing measurement errors.

[0051] In some embodiments, as Figure 6 and Figure 7 As shown, a first sliding plate 316 and a first adjusting bolt 317 are provided on the first mounting plate 313. The first sliding plate 316 is movable in the vertical direction. The first adjusting bolt 317 is connected to the first sliding plate 316. The first adjusting bolt 317 is used to adjust the position of the first sliding plate 316. The first spectral confocal sensor 341 is detachably connected to the first sliding plate 316.

[0052] The second mounting plate 314 is provided with a second sliding plate 318 and a second adjusting bolt 319. The second sliding plate 318 is movable in the vertical direction. The second adjusting bolt 319 is connected to the second sliding plate 318. The second adjusting bolt 319 is used to adjust the position of the second sliding plate 318. The second spectral confocal sensor 342 is detachably connected to the second sliding plate 318.

[0053] It is understandable that the distance between the spectral confocal sensor and the metal to be measured can be conveniently adjusted by adjusting the bolt, thereby improving the adaptability of the measurement.

[0054] In some embodiments, as Figure 5 As shown, the detection assembly 3 also includes a first guide rail 35 and a second guide rail 36. The first guide rail 35 is provided on the device body 1 and is arranged in the left-right direction. The second guide rail 36 is provided on the first guide rail 35 and is orthogonal to the first guide rail 35 and is arranged in the front-back direction. The bottom plate 311 is provided on the second guide rail 36.

[0055] The first guide rail 35 and the second guide rail 36 are both electric guide rails. The movable frame 31 can move in the front-to-back direction through the second guide rail 36 , and can move in the left-to-right direction through the first guide rail 35 .

[0056] In some embodiments, as Figure 6 As shown, there are two sensor groups 34 , which are located on both sides of the camera 32 .

[0057] It will be appreciated that the two sensor groups 34 can mutually verify data, reducing random errors in single-point measurements through average calculation or difference analysis. If one sensor group 34 fails due to wear, contamination, or circuit failure, the other sensor group 34 can still maintain basic measurement functions, ensuring continuity of measurement work.

[0058] In some embodiments, as Figures 1 to 3 As shown, the device body 1 is provided with an electric control box 11, which is connected to the detection assembly 3 via wiring. By operating the buttons, joystick, and other control elements on the electric control box 11, the operation of the detection assembly 3 is controlled, for example, the first guide rail 35 and the second guide rail 36 are started and stopped, and the position of the movable frame 31 is adjusted.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0061] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0062] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0063] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0064] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A metal geometric dimension detection device, characterized in that: include: device body; A measuring platform, the measuring platform being provided on the device body and having a measuring plane, the measuring plane being used for placing the metal to be measured and the standard metal; A detection component includes a mobile frame and a camera, a backlight source, and a sensor group arranged on the mobile frame. The mobile frame is mounted on the device body and is movable along the length and width directions of the measurement plane. The camera and the backlight source are arranged relative to each other. The sensor group includes a first spectral confocal sensor and a second spectral confocal sensor arranged relative to each other, wherein the camera and the first spectral confocal sensor are located on one side of the measurement plane, and the backlight source and the second spectral confocal sensor are located on the other side of the measurement plane.

2. The metal geometric dimension detection device according to claim 1, characterized in that: The measuring platform includes a support frame, a standard gauge block placement plate and a plurality of support rods arranged on the support frame. The support frame is connected to the device body, the height of the support frame is adjustable, and the plurality of support rods are arranged at intervals along the length direction of the support frame.

3. The metal geometric dimension detection device according to claim 1, characterized in that: The mobile frame includes a base plate, a support plate, a first mounting plate and a second mounting plate, the support plate is connected to the base plate, the support plate is generally C-shaped, the first mounting plate is connected to the upper end of the support plate, the camera and the first spectral confocal sensor are arranged on the first mounting plate, the second mounting plate is connected to the lower end of the support plate, and the backlight source and the second spectral confocal sensor are arranged on the second mounting plate.

4. The metal geometric dimension detection device according to claim 3, characterized in that: Reinforcing ribs are provided between the support plate and the bottom plate, and between the support plate and the first mounting plate and the second mounting plate.

5. The metal geometric dimension detection device according to claim 3, characterized in that: A first sliding plate and a first adjusting bolt are provided on the first mounting plate. The first sliding plate is movable in a vertical direction. The first adjusting bolt is connected to the first sliding plate and is used to adjust the position of the first sliding plate. The first spectral confocal sensor is detachably connected to the first sliding plate. A second sliding plate and a second adjusting bolt are provided on the second mounting plate. The second sliding plate is movable in a vertical direction. The second adjusting bolt is connected to the second sliding plate. The second adjusting bolt is used to adjust the position of the second sliding plate. The second spectral confocal sensor is detachably connected to the second sliding plate.

6. The metal geometric dimension detection device according to claim 3, characterized in that: The detection component further includes a first guide rail and a second guide rail, wherein the first guide rail is arranged on the device body, the second guide rail is arranged on the first guide rail, the second guide rail is orthogonal to the first guide rail, and the bottom plate is arranged on the second guide rail.

7. The metal geometric dimension detection device according to claim 1, characterized in that: There are two sensor groups, and the two sensor groups are respectively located on both sides of the camera.

8. The metal geometric dimension detection device according to any one of claims 1 to 7, characterized in that: An electric control box is provided on the device body, and the electric control box is connected to the detection component via a circuit to control the operation of the detection component.

9. The metal geometric dimension detection device according to claim 8, characterized in that: The device body is provided with a terminal bracket, and the terminal bracket is provided with a display, and the display is used to display the detection data of the detection component.

10. The metal geometric dimension detection device according to claim 1, characterized in that: The bottom of the device body is provided with a plurality of shock-absorbing legs and a plurality of universal moving wheels.

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