A detection device for laser cutting head installation precision
Patent Information
- Application Number
- CN202522666134.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-16
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-16
AI Technical Summary
When the laser cutting head is installed on the fiber laser, it is easy to tilt, which causes the laser to not be emitted perpendicularly, resulting in a rough cut surface with a large angle. Existing technology makes it difficult to easily determine the installation accuracy.
Design a detection device including a support assembly and a sleeve. The perpendicularity of the laser on the cutting head is detected by the cross and the spot photographic paper inside the sleeve. The distance between the cross points of the laser spot is calculated using a camera and a processor to ensure that the laser is emitted perpendicularly.
It facilitates the determination of the installation accuracy of the laser cutting head, avoids rough cut surfaces and large bevels in the processed materials, ensures processing requirements, and improves inspection efficiency and accuracy.
Smart Images
Figure CN224933450U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of laser cutting technology, specifically relating to a detection device for the installation accuracy of a laser cutting head. Background Technology
[0002] Laser cutting technology, as an advanced manufacturing technology, has been widely used in many fields due to its high precision, high efficiency and low pollution.
[0003] In related technologies, fiber lasers are frequently used in laser cutting technology. The output port of the fiber laser is connected to the laser cutting head through a plug-in connection. The laser cutting head is equipped with collimating lenses and focusing lenses to collimate and focus the diverging light emitted from the output port before laser cutting.
[0004] However, during the process of inserting the laser cutting head into the fiber laser, the laser cutting head is prone to tilting relative to the light output port (i.e., the lens in the laser cutting head is tilted), which makes it impossible for the laser to be emitted perpendicular to the laser cutting head, resulting in a rough cut surface with a large angle after the material is cut. Utility Model Content
[0005] In view of the above-mentioned defects or improvement needs of the existing technology, this utility model provides a detection device for the installation accuracy of laser cutting head. Its purpose is to conveniently determine whether the laser is emitted perpendicular to the laser cutting head, so as to make timely adjustments, thereby ensuring that the installation accuracy of the laser cutting head meets the installation requirements and the processed workpiece meets the processing requirements.
[0006] To achieve the above objectives, this utility model provides a detection device for the installation accuracy of a laser cutting head, the detection device comprising a support assembly and a sleeve; The support assembly includes a base, a bracket, and a movable frame. The base is used to horizontally support the light spot photographic paper. The bottom end of the bracket is located on the base, and the movable frame is slidably arranged on the bracket in the vertical direction. The sleeve is located on the movable frame, and the sleeve is arranged vertically along its axis. A cross-shaped component arranged horizontally is inserted into the sleeve.
[0007] Optionally, the detection device further includes a driving component located on a support, the output end of which is connected to the movable frame in a transmission manner.
[0008] Optionally, the driving component is a linear module or a cylinder.
[0009] Optionally, the detection device further includes a support frame and a camera, the bottom end of the support frame being fixed on the base, and the camera being located on the support frame, the camera being used to take pictures of the light spot photographic paper.
[0010] Optionally, the detection device further includes a processor electrically connected to the camera, the processor being used to acquire photographs taken by the camera and process and calculate the distance between the intersecting points of the two cross-shaped light spots on the light spot photographic paper.
[0011] Optionally, a light source is provided on the support frame for illuminating the photo paper with light spots.
[0012] Optionally, a support ring is provided at one end of the movable frame facing away from the bracket, and a silicone ring for clamping the sleeve is provided on the inner wall of the support ring.
[0013] Optionally, a two-dimensional platform is provided on the base, and the output end of the two-dimensional platform is fixedly connected to the bottom end of the bracket to adjust the planar position of the bracket relative to the base.
[0014] Optionally, the sleeve is made of copper.
[0015] Optionally, the base is a steel plate.
[0016] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.
[0017] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include: The present invention provides a detection device for the installation accuracy of a laser cutting head. When detecting the installation accuracy of the laser cutting head on a fiber laser, firstly, a spot-patterned photographic paper is placed on the base. The detection device is positioned below the laser cutting head, with the sleeve directly below it. Then, the movable frame is slid, causing the cross-shaped element inside the sleeve to move to a first height position. The fiber laser is then activated, and the laser emitted by the fiber laser, after passing through the cross-shaped element, will present a cross-shaped spot on the spot-patterned photographic paper. Next, the movable frame is slid, causing the cross-shaped element inside the sleeve to move to a second height position (the second height position is vertically spaced from the first height position). The fiber laser is activated again, and the laser emitted by the fiber laser, after passing through the cross-shaped element, will present another cross-shaped spot on the spot-patterned photographic paper.
[0018] When the laser is emitted perpendicularly (or nearly perpendicularly) to the laser cutting head (i.e., the laser cutting head is not tilted relative to the fiber laser's output port and is vertically positioned), the laser enters the sleeve vertically. Even if the heights of the two crossbeams are different, the two crossbeams essentially overlap, and the distance between their bifurcations is small (below the set threshold). This indicates that the lens in the laser cutting head is basically perpendicular to the laser, and the laser can be emitted almost perpendicularly to the laser cutting head, preventing the problem of a rough, uneven cut surface after material cutting. In this case, the laser cutting head installation accuracy meets the requirements. When the laser is emitted perpendicularly from the laser cutting head (i.e., the laser cutting head is tilted relative to the fiber laser's output port and is tilted), the laser enters the sleeve obliquely. Due to the different heights of the two crossbeams, the two crossbeams are spaced apart, and the distance between their bifurcations is large (above the set threshold). This indicates that the lens in the laser cutting head is tilted relative to the laser, and the laser exits obliquely from the laser cutting head. This results in a rough, uneven cut surface after material cutting, and the laser cutting head installation accuracy does not meet the requirements. Therefore, it is necessary to remove the laser cutting head in time, reinstall the laser cutting head on the fiber laser, and retest it in the manner described above until the installation accuracy of the laser cutting head meets the installation requirements.
[0019] In other words, the detection device for the installation accuracy of the laser cutting head provided in this embodiment of the utility model can conveniently determine whether the laser is emitted perpendicular to the laser cutting head, so as to make timely adjustments, thereby ensuring that the installation accuracy of the laser cutting head meets the installation requirements and the processed workpiece meets the processing requirements. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of a device for detecting the installation accuracy of a laser cutting head, provided in an embodiment of this utility model. Figure 2 This is a schematic diagram of a detection method provided by an embodiment of the present utility model; Figure 3 This is another detection schematic diagram provided by an embodiment of the present utility model; Figure 4 This is an assembly diagram of the support ring provided in an embodiment of the present invention.
[0021] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Support component; 11. Base; 12. Bracket; 13. Movable frame; 14. Support ring; 15. Silicone ring; 2. Sleeve; 3. Cross; 100. Spotted photographic paper; 200. Laser cutting head; 300. Cross-shaped spot. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0024] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0027] Example: Figure 1 This is a schematic diagram of a detection device for the installation accuracy of a laser cutting head, provided in an embodiment of this utility model. Figure 1 As shown, the detection device includes a support assembly 1 and a sleeve 2.
[0028] The support assembly 1 includes a base 11, a bracket 12 and a movable frame 13. The base 11 is used to horizontally support the light spot photographic paper 100. The bottom end of the bracket 12 is located on the base 11. The movable frame 13 is slidably arranged on the bracket 12 in the vertical direction (Z-axis direction).
[0029] The sleeve 2 is located on the movable frame 13, and the axial direction of the sleeve 2 is vertically arranged. A cross 3 arranged horizontally is inserted into the sleeve 2.
[0030] In the present invention, a detection device for the installation accuracy of a laser cutting head is provided. When detecting the installation accuracy of the laser cutting head 200 on a fiber laser, firstly, a spotting photographic paper 100 is placed on the base 11. The detection device is positioned below the laser cutting head 200, with the sleeve 2 directly below it. Then, the movable frame 13 is slid, causing the cross 3 inside the sleeve to move to a first height position. The fiber laser is then activated, and the laser emitted by the fiber laser, after passing through the cross 3, will present a cross-shaped spot 300 on the spotting photographic paper 100. Next, the movable frame 13 is slid, causing the cross 3 inside the sleeve to move to a second height position (the second height position is vertically spaced from the first height position). The fiber laser is activated again, and the laser emitted by the fiber laser, after passing through the cross 3, will present another cross-shaped spot 300 on the spotting photographic paper 100.
[0031] When the laser is emitted perpendicularly (or nearly perpendicularly) to the laser cutting head 200 (i.e., the laser cutting head 200 is not tilted relative to the fiber laser's output port and is vertically arranged), the laser enters the sleeve 2 perpendicularly. Even if the heights of the two crossbeams 3 are different, the two crossbeam spots 300 remain basically overlapping, and the distance between the cross points of the two crossbeam spots 300 is small (below the set threshold). This indicates that the lens in the laser cutting head 200 is basically perpendicular to the laser, and the laser can be emitted almost perpendicularly to the laser cutting head 200. There will be no problem of a rough cut surface with a large angle after cutting the material. At this time, the installation accuracy of the laser cutting head 200 meets the installation requirements (see...). Figure 2 When the laser cutting head 200 is tilted (i.e., the laser cutting head 200 is tilted relative to the output port of the fiber laser, and the laser cutting head 200 is tilted), the laser enters the sleeve 2 at an angle. Due to the different heights of the two crossbeams 3, the two crossbeams 300 are spaced apart, and the distance between the cross points of the two crossbeams 300 is large (higher than the set threshold). This indicates that the lens in the laser cutting head 200 is tilted relative to the laser. The laser is emitted at an angle from the laser cutting head 200, which will result in a rough cut surface with a large angle after the material is cut. At this time, the installation accuracy of the laser cutting head 200 does not meet the installation requirements (see...). Figure 3 Therefore, it is necessary to remove the laser cutting head 200 in a timely manner, reinstall the laser cutting head 200 on the fiber laser, and retest it in the manner described above until the installation accuracy of the laser cutting head 200 meets the installation requirements.
[0032] In other words, the detection device for the installation accuracy of the laser cutting head provided in this embodiment of the utility model can conveniently determine whether the laser is emitted perpendicular to the laser cutting head 200, so as to make timely adjustments, thereby ensuring that the installation accuracy of the laser cutting head 200 meets the installation requirements and the processed workpiece meets the processing requirements.
[0033] For example, when the interval between the two crosshair spots 300 is no more than 0.4 mm, the laser cutting head 200 is considered to have met the installation accuracy requirements. Otherwise, the laser cutting head 200 needs to be removed and reinstalled in time until the interval between the two crosshair spots 300 is no more than 0.4 mm. Correspondingly, the workpiece processed by the laser cutting head 200 at this time meets the processing requirements.
[0034] In addition, sleeve 2 can be made of copper, which has a low laser absorption rate, thus preventing sleeve 2 from overheating. Similarly, cross 3 can be made of copper.
[0035] In one embodiment of this utility model, the base 11 can be a steel plate. The steel plate has high structural strength, which can not only reliably support the bracket 12 and the movable frame 13, but also has high flatness, which can reliably support the light spot photographic paper 100 horizontally.
[0036] In this embodiment, the detection device further includes a driving component located on the support 12, with its output end connected to the movable frame 13. This driving component, directly mounted on the support 12, can directly drive the movable frame 13 to move up and down along the support 12, thereby automatically switching the cross 3 from a first height position to a second height position, improving detection efficiency and avoiding manual adjustment.
[0037] It is easy to understand that when manually adjusting the height of the sliding frame 13, it is impossible to guarantee the accuracy and repeatability of the adjustment, resulting in a large error. However, by using a drive component, it can be ensured that the cross 3 always moves to the same height position after adjustment during use, which can effectively avoid the impact of manual adjustment on the interval between the two cross spots 300 and ensure the reliability of the detection data.
[0038] For example, the driving component can be a linear module or a cylinder, and the present invention does not limit this.
[0039] In one embodiment of this utility model, the detection device further includes a support frame and a camera (not shown). The bottom end of the support frame is fixed on the base 11, and the camera is located on the support frame. The camera is used to take pictures of the light spot photographic paper 100.
[0040] In the above embodiment, the support frame can support the camera and position it at a suitable height for subsequent photography. The camera can then directly photograph the two crosshair spots 300 on the photo paper 100, and the distance between the cross points of the two crosshair spots 300 can be accurately obtained by processing and calculating the image.
[0041] For example, the camera can be movably mounted on a support frame, thereby adjusting the camera to a suitable height to achieve precise adjustment of its focus.
[0042] Furthermore, the detection device also includes a processor, which is electrically connected to the camera. The processor is used to acquire the photograph taken by the camera and process and calculate the distance between the cross points of the two cross-shaped light spots on the light spot photographic paper 100.
[0043] The processor is a conventional image processor in the field, which converts natural images into digital form through sampling and quantization, thereby automatically obtaining the distance between the bifurcated points of the two cross-shaped light spots.
[0044] In other words, the camera captures images of two crosshair spots 300 on the light-spot photographic paper 100, and the processor processes and calculates the distance between the bifurcations of the two crosshair spots 300. Data obtained in this way is highly reliable and efficient.
[0045] In addition, a light source is provided on the support frame to illuminate the light spot photographic paper 100, thereby ensuring the camera's photographic effect.
[0046] In other embodiments of this invention, the distance between the two crosshair spots can be measured by magnification using a microscope, and this invention does not limit this method.
[0047] Figure 4 This is an assembly diagram of the support ring provided in an embodiment of the present invention, as shown below. Figure 4 As shown, a support ring 14 is provided at the end of the movable frame 13 facing away from the bracket 12, and a silicone ring 15 for clamping the sleeve 2 is provided on the inner wall of the support ring 14. The support ring 14 can provide circumferential support for the sleeve 2, while the silicone ring 15 uses elastic deformation to firmly clamp the sleeve 2 in the support ring 14, preventing the sleeve 2 from falling off.
[0048] For example, the support ring 14 is connected to the movable frame 13 by bolts.
[0049] See also Figure 1 A two-dimensional platform (not shown) is provided on the base 11. The output end of the two-dimensional platform is fixedly connected to the bottom end of the bracket 12 to adjust the planar position of the bracket 12 relative to the base 11.
[0050] In the above embodiment, the two-dimensional platform can adjust the position of the bracket 12 in the X and Y directions, thereby ensuring that the sleeve 2 is aligned with the laser cutting head 200, avoiding the method of aligning the sleeve 2 with the laser cutting head 200 by moving the base 11.
[0051] For example, the two-dimensional platform includes an X-axis adjustment module and a Y-axis adjustment module. The fixed end of the X-axis adjustment module is mounted on the base 11, and the output end of the X-axis adjustment module is connected to the fixed end of the Y-axis adjustment module, thereby adjusting the position of the Y-axis adjustment module in the X-axis direction through the X-axis adjustment module. The output end of the Y-axis adjustment module is fixedly connected to the bottom end of the bracket 12, thereby adjusting the position of the bracket 12 in the Y-axis direction through the Y-axis adjustment module.
[0052] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 device for detecting the installation accuracy of a laser cutting head, characterized in that, The detection device includes a support assembly and a sleeve; The support assembly includes a base, a bracket, and a movable frame. The base is used to horizontally support the light spot photographic paper. The bottom end of the bracket is located on the base, and the movable frame is slidably arranged on the bracket in the vertical direction. The sleeve is located on the movable frame, and the sleeve is arranged vertically along its axis. A cross-shaped component arranged horizontally is inserted into the sleeve.
2. The detection device for the installation accuracy of a laser cutting head according to claim 1, characterized in that, The detection device also includes a driving component, which is located on a support and whose output end is connected to the movable frame.
3. The detection device for the installation accuracy of a laser cutting head according to claim 2, characterized in that, The driving component is a linear module or a cylinder.
4. The detection device for the installation accuracy of a laser cutting head according to claim 1, characterized in that, The detection device also includes a support frame and a camera. The bottom end of the support frame is fixed on the base, and the camera is located on the support frame. The camera is used to take pictures of the light spot photographic paper.
5. The detection device for the installation accuracy of a laser cutting head according to claim 4, characterized in that, The detection device also includes a processor, which is electrically connected to the camera. The processor is used to acquire the photograph taken by the camera and process and calculate the distance between the cross points of the two cross-shaped light spots on the light spot photographic paper.
6. The detection device for the installation accuracy of a laser cutting head according to claim 4, characterized in that, The support frame is equipped with a light source, which is used to illuminate the photo paper with light spots.
7. The detection device for the installation accuracy of a laser cutting head according to claim 1, characterized in that, The movable frame has a support ring at one end facing away from the bracket, and the inner wall of the support ring has a silicone ring for clamping the sleeve.
8. The detection device for the installation accuracy of a laser cutting head according to claim 1, characterized in that, A two-dimensional platform is provided on the base, and the output end of the two-dimensional platform is fixedly connected to the bottom end of the bracket to adjust the planar position of the bracket relative to the base.
9. A detection device for the installation accuracy of a laser cutting head according to any one of claims 1 to 8, characterized in that, The sleeve is made of copper.
10. A detection device for the installation accuracy of a laser cutting head according to any one of claims 1 to 8, characterized in that, The base is made of steel plate.