Workpiece height measuring device

Abstract

The utility model provides a work piece height measuring device relates to measuring equipment technical field, including work bench, camera, red light head, mounting plate and light supplementing lamp, the work bench is used for bearing work piece, camera with red light lamp is located above work bench, the red light that red light lamp sent is oblique to work piece, mounting plate installs on camera, light supplementing lamp installs on mounting plate, and light supplementing lamp is located below the plane of camera's lens surface lies, the work piece height measuring device of the utility model, through camera and red light lamp are located above work bench, the red light that red light lamp sent is oblique to work piece, mounting plate installs on camera, light supplementing lamp is located below the plane of camera's lens surface lies, the red light spot that the shooting comes out is clear, is favorable to discerning the accurate position of red light spot, to improve the precision of measuring height.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, and in particular to a workpiece height measuring device. Background Technology

[0002] Laser welding is a highly efficient and precise welding method that uses a high-energy-density laser beam as a heat source, and it is one of the important applications of laser materials processing technology. The welding process is heat conduction type; the laser radiation heats the surface of the workpiece, and the surface heat diffuses inward through heat conduction. By controlling parameters such as the laser pulse width, energy, peak power, and repetition frequency, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully applied to the precision welding of micro and small parts. Laser welding requires knowledge of the workpiece height to facilitate adjustment of the distance between the laser head and the workpiece.

[0003] In existing technologies, cameras are typically used to capture red light spots for height measurement. However, the captured red light spots often have large halos, which can make image recognition of the spot center inaccurate, thus affecting the accuracy of height measurement. Utility Model Content

[0004] In view of this, the present invention proposes a workpiece height measuring device to solve the technical problem mentioned in the background art that the existing technology of using a camera to capture a red light spot for height measurement has a large halo, which makes the image recognition of the spot center inaccurate, thus affecting the accuracy of height measurement.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides a workpiece height measuring device, including a worktable, a camera, an infrared laser head, a mounting plate, and a supplementary light, wherein: The worktable is used to support the workpiece; The camera and the red light are located above the worktable, and the red light emitted by the red light shines obliquely toward the workpiece; The mounting plate is mounted on the camera; The fill light is mounted on the mounting plate and is located below the plane of the camera lens surface.

[0006] In some alternative implementations, preferably, the distance from the fill light to the plane containing the lens surface of the camera is 0~6mm.

[0007] In some optional embodiments, preferably, an angle adjustment assembly is also included, the angle adjustment assembly including an adjustment frame and a support member, the adjustment frame having a hinge hole, the red light being hingedly mounted in the hinge hole, and the support member being slidably mounted on the adjustment frame and supported on the side of the red light.

[0008] In some alternative embodiments, preferably, the mounting plate is provided with a light-transmitting hole for the light from the red lamp to pass through.

[0009] In some alternative implementations, preferably, a bracket plate is also included, on which both the camera and the red light are mounted.

[0010] In some optional embodiments, preferably, a lifting mechanism is also included, which includes a guide rail, a slider, and a driving component. The guide rail is vertically arranged, the slider is slidably mounted on the guide rail and connected to the support plate, and the driving component is drivingly connected to the slider.

[0011] In some alternative embodiments, preferably, a frame is also included, on which the guide rail and the drive unit are mounted.

[0012] In some alternative embodiments, preferably, a limiting block is also included, which is mounted on the frame, and the support plate is in its highest position when the limiting block abuts against the slider.

[0013] The workpiece height measuring device of this utility model has the following advantages over the prior art: (1) The camera and the red light are located above the workbench. The red light emitted by the red light is obliquely directed at the workpiece. The mounting plate is mounted on the camera. The supplementary light is mounted on the mounting plate and is located below the plane of the lens surface of the camera. The red light spot captured is clearly visible, which is helpful to identify the accurate position of the red light spot and thus improve the accuracy of height measurement. (2) The distance from the supplementary light to the plane of the lens surface of the camera is 0~6mm, the red light spot captured by the camera is clearer, and the accuracy of height measurement is further improved; (3) The angle adjustment component includes an adjustment frame and a support member. The adjustment frame is provided with a hinge hole. The red light is hinged to the hinge hole. The support member is slidably installed on the adjustment frame and supported on the side of the red light, so as to facilitate the adjustment of the angle of the red light, so that the light shines on the product, making it convenient to measure products of different heights and improve the applicability. (4) The mounting plate is provided with a light-transmitting hole, which is used for the light of the red light lamp to pass through, so as to avoid the mounting plate blocking the light emitted by the red light lamp and to ensure the reliability and stability of the device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the workpiece height measuring device (hidden frame and lifting mechanism) in an embodiment of this utility model; Figure 2 This utility model Figure 1 Enlarged view of part A in the middle; Figure 3 This is a schematic diagram of the workpiece height measuring device in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the lifting mechanism in an embodiment of the present utility model; Figure 5 The image shows a red light spot captured by placing the supplementary light in this embodiment of the invention at a position 0mm below the plane of the camera lens surface; Figure 6 The image shows a red light spot captured by placing the supplementary light lamp in this embodiment of the invention 3mm below the plane of the camera lens surface. Figure 7 The image shows a red light spot captured by placing the supplementary light in this embodiment of the invention 6mm below the plane of the camera lens.

[0016] Explanation of reference numerals in the attached diagram: 1-Workbench, 2-Camera, 3-Red light head, 4-Mounting plate, 5-Fill light, 6-Angle adjustment component, 7-Bracket plate, 8-Lifting mechanism, 9-Frame, 10-Limit block; 100 - Workpiece; 41 - Light-transmitting hole; 61-Adjusting bracket, 611-Hinge hole, 62-Support member; 81-Guide rail, 82-Slider, 83-Driver. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0018] Reference Figures 1-7 As shown in the embodiment of this utility model, a workpiece height measuring device is proposed, including a worktable 1, a camera 2, an infrared laser head 3, a mounting plate 4, and a supplementary light 5, wherein: The workbench 1 is used to support the workpiece 100; The camera 2 and the red light are located above the workbench 1, and the red light emitted by the red light is obliquely directed toward the workpiece 100; the camera 2 and the red light are installed at the same height, with the red light located to one side of the camera 2 and the camera 2 located directly above the workpiece 100. The mounting plate 4 is mounted on the camera 2; The fill light 5 is mounted on the mounting plate 4, and the fill light 5 is located below the plane of the lens surface of the camera 2. The fill light 5 is soldered to the mounting plate 4 and is an integral part of the mounting plate 4. By adjusting the position of the mounting plate 4, the fill light 5 is positioned below the plane of the lens surface of the camera 2.

[0019] The workpiece height measuring device proposed in this embodiment uses a camera 2 and a red light lamp located above the worktable 1. The red light emitted by the red light lamp is obliquely directed towards the workpiece 100. The mounting plate 4 is mounted on the camera 2. The supplementary light lamp 5 is mounted on the mounting plate 4 and is located below the plane of the lens surface of the camera 2. The red light spot captured is clearly visible, which is beneficial for identifying the accurate position of the red light spot, thereby improving the accuracy of height measurement.

[0020] In some embodiments, the distance L from the supplementary light 5 to the plane of the lens surface of the camera 2 is 0~6mm. By setting these parameters, the red light spot captured by the camera 2 is clearer, further improving the accuracy of altitude measurement. Placing the supplementary light 0mm below the plane of the camera lens surface results in a red light spot as shown... Figure 5 As shown; placing the fill light 3mm below the plane of the camera lens surface, the resulting red light spot is as follows. Figure 6 As shown; placing the fill light 6mm below the plane of the camera lens surface, the resulting red light spot is as follows. Figure 7 As shown; combined Figures 5-7 As shown, the captured red light spot is clearly visible, which helps the software identify the accurate location of the red light spot, thereby improving the accuracy of altitude measurement.

[0021] In some embodiments, the workpiece height measuring device further includes an angle adjustment assembly 6, which includes an adjustment frame 61 and a support member 62. The adjustment frame 61 is provided with a hinge hole 611, and the red light is hinged to the hinge hole 611. The support member 62 is slidably installed on the adjustment frame 61 and supported on the side of the red light. After the red light is adjusted to the desired angle, the support member 62 slides on the adjustment frame 61 and is supported on the side of the red light, and then is fixed on the adjustment frame 61. This facilitates the adjustment of the angle of the red light, allowing the light to illuminate the product, making it convenient to measure products of different heights and improving the applicability.

[0022] In some embodiments, the mounting plate 4 is provided with a light-transmitting hole 41, which allows light from a red light lamp to pass through. The light from the red light lamp exits from the edge of the light-transmitting hole 41 near the camera 2. By allowing light from the red light lamp to pass through the light-transmitting hole 41, the mounting plate 4 is prevented from obstructing the light emitted by the red light lamp, thus ensuring the reliability and stability of the device.

[0023] In some embodiments, the workpiece height measuring device further includes a support plate 7, on which both the camera 2 and the red light are mounted. By mounting the camera 2 and the red light on the same support plate 7, separate mounting and fixing components are eliminated, making the device more compact, smaller, and space-saving, facilitating flexible layout.

[0024] In some embodiments, the workpiece height measuring device further includes a lifting mechanism 8, which includes a guide rail 81, a slider 82, and a driving component 83. The guide rail 81 is vertically arranged, the slider 82 is slidably mounted on the guide rail 81 and connected to the support plate 7, and the driving component 83 is drivenly connected to the slider 82. By driving the slider 82 along the guide rail 81 through the driving component 83, the support plate 7 is raised and lowered, thereby adapting to the measurement of workpieces 100 of different heights and improving its applicability. The driving component 83 can be a cylinder.

[0025] In some embodiments, the workpiece height measuring device further includes a frame 9 on which the guide rail 81 and the drive component 83 are mounted. The frame 9, by mounting the guide rail 81 and the drive component 83 and serving as a support 62 for the mounting plate 4, allows the entire device to move above the workpiece 100.

[0026] In some embodiments, a limiting block 10 is further included. The limiting block 10 is mounted on the frame 9. When the limiting block 10 abuts against the slider 82, the support plate 7 is at its highest position. Through the action of the limiting block 10, when the slider 82 slides to the point where it abuts against the limiting block 10, the support plate 7 is at its highest position, and the drive shaft of the drive member 83 retracts to its shortest stroke position, thereby improving the reliability and stability of the device.

[0027] The working principle of the workpiece height measuring device in this embodiment is as follows: the red light emitted by the red lamp is obliquely directed towards the workpiece 100; the mounting plate 4 is mounted on the camera 2; the supplementary light 5 is mounted on the mounting plate 4, and the supplementary light 5 is located below the plane of the lens surface of the camera 2. The captured red light spot is clearly visible, and the accurate position of the red light spot can be identified. Therefore, after the red lamp illuminates the workpiece 100, the distance from the edge of the light-transmitting hole 41 to the central axis of the camera 2 is L, the angle between the light beam and the vertical direction is α, the height from the upper surface of the mounting plate 4 to the workpiece 100 is h, h = L / tanα, and the height from the worktable 1 to the upper surface of the mounting plate 4 is H. The height of the workpiece 100 is the difference between H and h. Because the supplementary light 5 is located below the plane of the lens surface of the camera 2, the captured red light spot is clearly visible, which is beneficial for identifying the accurate position of the red light spot, thereby improving the accuracy of height measurement.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A workpiece height measuring device, characterized in that, Includes a workbench, camera, red light, mounting plate, and fill light, among which: The worktable is used to support the workpiece; The camera and the red light are located above the worktable, and the red light emitted by the red light shines obliquely toward the workpiece; The mounting plate is mounted on the camera; The fill light is mounted on the mounting plate and is located below the plane of the lens surface of the camera.

2. The workpiece height measuring device as described in claim 1, characterized in that, The distance from the fill light to the plane containing the lens surface of the camera is 0~6mm.

3. The workpiece height measuring device as described in claim 1, characterized in that, It also includes an angle adjustment component, which includes an adjustment frame and a support member. The adjustment frame is provided with a hinge hole, and the red light is hinged to the hinge hole. The support member is slidably installed on the adjustment frame and supported on the side of the red light.

4. The workpiece height measuring device as described in claim 1, characterized in that, The mounting plate is provided with light-transmitting holes for the light from the red light lamp to pass through.

5. The workpiece height measuring device as described in claim 1, characterized in that, It also includes a bracket plate, on which both the camera and the red light are mounted.

6. The workpiece height measuring device as described in claim 5, characterized in that, It also includes a lifting mechanism, which includes a guide rail, a slider, and a driving component. The guide rail is vertically arranged, the slider is slidably mounted on the guide rail and connected to the support plate, and the driving component is drivingly connected to the slider.

7. The workpiece height measuring device as described in claim 6, characterized in that, It also includes a frame, on which the guide rail and the drive unit are mounted.

8. The workpiece height measuring device as described in claim 7, characterized in that, It also includes a limiting block, which is installed on the frame. When the limiting block abuts against the slider, the support plate is at its highest position.

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