Vision-based laser cutting system
By introducing visual identification parts and negative pressure adsorbers into the laser cutting system, the problem of cutting offset of the laser cutting machine is solved, and product yield and processing accuracy are improved.
Patent Information
- Application Number
- CN202323578062.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2033-12-26
AI Technical Summary
When cutting workpieces, the actual size of the product and the drawing size differ, the actual cut part is offset from the part you want to cut, which reduces the product yield.
A vision-based laser cutting system is designed to identify the actual size of the workpiece to be cut through the visual recognition part, and correct the processing trajectory according to the actual size to ensure cutting accuracy. At the same time, negative pressure adsorbents are used to fix the workpiece to be cut to avoid occlusion problems caused by clamping and improve the coverage of visual recognition.
By correcting the processing trajectory and improving the coverage of visual recognition, preventing cutting offsets, the product yield is significantly improved and the accuracy of the processing trajectory is improved.
Smart Images
Figure CN222588436U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of laser equipment, in particular to a vision-based laser cutting system. Background Art
[0002] With the development of modern mechanical processing industry, the requirements for cutting quality and precision are constantly increasing, and the requirements for improving production efficiency, reducing production costs, and having highly intelligent automatic cutting functions are also increasing. The development of CNC cutting machines must adapt to the requirements of the development of modern mechanical processing industry. Laser cutting machines are the most efficient, with the highest cutting precision and generally smaller cutting thickness.
[0003] Existing laser cutting machines need to use edge cutting when cutting workpieces. To this end, electronic drawings need to be stored in the cutting system in advance to form a processing trajectory. However, there is usually a difference between the actual size of the product and the size of the drawing. If processing is only performed along the processing trajectory, it is easy for the actual cutting part to deviate from the part you want to cut, resulting in a decrease in product yield. Utility Model Content
[0004] The main purpose of the utility model is to provide a vision-based laser cutting system, aiming to solve the problem that the actual cutting part and the desired cutting part of the existing laser cutting are offset, resulting in a decrease in product yield.
[0005] To achieve the above purpose, the utility model provides a vision-based laser cutting system, comprising:
[0006] Pedestal;
[0007] a first drive assembly, the first drive assembly being mounted on the base;
[0008] A bearing component, wherein the bearing component is mounted on the first driving assembly, the first driving assembly drives the bearing component to move in a horizontal direction, and a negative pressure adsorption component is provided on the bearing component, and the negative pressure adsorption component is used to draw negative pressure on the workpiece to be cut so as to fix the workpiece to be cut on the bearing component;
[0009] A laser cutting assembly is installed on the base and is located above the supporting component. The laser cutting assembly is used to emit laser to cut the workpiece to be cut. A visual identification component is provided on the laser cutting assembly.
[0010] Preferably, the first driving assembly includes an X-axis module and a Y-axis module, the X-axis module is mounted on the base, the Y-axis module is mounted on the X-axis module, and the bearing component is mounted on the Y-axis module, or the Y-axis module is mounted on the base, the X-axis module is mounted on the Y-axis module, and the bearing component is mounted on the X-axis module.
[0011] Preferably, a slide rail is provided on the base, and a slider for slidingly contacting and cooperating with the slide rail is provided at the bottom of the X-axis module or the Y-axis module.
[0012] Preferably, the bearing component includes a bearing platform and a rotating assembly, the rotating assembly is mounted on the first driving assembly, the bearing platform is mounted on the rotating assembly, and the rotating assembly is used to drive the bearing platform to rotate.
[0013] Preferably, the rotating assembly comprises a first rotating driving member, a second rotating driving member and a third rotating driving member, the rotating shaft of the first rotating driving member is arranged along the Z axis, the rotating shaft of the second rotating driving member is arranged along the X axis, the rotating shaft of the third rotating driving member is arranged along the Y axis, and the first rotating driving member is mounted on the first driving assembly;
[0014] The second rotating driving member is mounted on the first rotating driving member, the third rotating driving member is mounted on the second rotating driving member, and the supporting platform is mounted on the third rotating driving member, or the third rotating driving member is mounted on the first rotating driving member, the second rotating driving member is mounted on the third rotating driving member, and the supporting platform is mounted on the second rotating driving member.
[0015] Preferably, a baffle is provided on the outer side of the supporting platform, and the baffle is used to abut against the workpiece to be cut.
[0016] Preferably, a bracket is provided on the base, and the bracket includes two legs and a mounting frame, the two legs are installed on opposite sides of the base, and the two ends of the mounting frame are respectively connected to the two legs, so that the mounting frame is located on the top of the supporting component, and the laser cutting component is installed on the mounting frame.
[0017] Preferably, the laser cutting assembly comprises a laser source, a reflection assembly, a connecting frame and a laser cutting head, the connecting frame and the laser source are mounted on the mounting frame, the laser source is arranged horizontally, the laser cutting head and the visual identification component are mounted on the mounting frame and extend in a vertical direction, the reflection assembly is mounted on the mounting frame and the connecting frame, and is used to reflect the laser emitted by the laser source to the laser cutting head.
[0018] Preferably, a Z-axis module is provided on the connecting frame, and the laser cutting head and the visual identification component are installed on the Z-axis module in a liftable manner.
[0019] Preferably, the visual identification component is a CCD camera.
[0020] In the technical solution of the utility model, the workpiece to be cut is carried and fixed by the carrying component, and the first driving component drives the carrying component to move in the horizontal direction, thereby driving the workpiece to be cut to move in the horizontal direction, so that the laser cutting component can cut the workpiece to be cut along the processing trajectory, and at the same time, the actual size of the workpiece to be cut is identified by the visual recognition component, and the processing trajectory is corrected according to the actual size of the workpiece to be cut, so as to prevent the actual cutting part from being offset from the desired cutting part, thereby improving the product yield. At the same time, due to the traditional clamping and fixing method, the clamping claw or clamping arm will block part of the surface of the workpiece to be cut, resulting in part of the workpiece to be cut that cannot be identified by the visual recognition component. Therefore, negative pressure is applied to the workpiece to be cut by the negative pressure adsorption component to fix the workpiece to be cut, and the workpiece to be cut will not be blocked, thereby improving the recognition coverage of the visual recognition component, further improving the accuracy of the processing trajectory, and improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0022] Figure 1 This is a schematic diagram of the structure of a vision-based laser cutting system according to an embodiment of the utility model;
[0023] Figure 2 This is a schematic diagram of the structure of a laser cutting component of a vision-based laser cutting system according to an embodiment of the utility model;
[0024] Figure 3 This is a schematic structural diagram of a bearing component of a vision-based laser cutting system according to an embodiment of the utility model.
[0025] Description of Figure Numbers:
[0026]
[0027]
[0028] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] It should be noted that all directional indications in this embodiment (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0031] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0032] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] In addition, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.
[0034] In the present invention, the descriptions of directions such as "up", "down", "front", "back", "left", and "right" are as follows: Figure 1 The directions shown are for reference only and are used to explain the Figure 1The relative position relationship between the components in the shown posture. If the specific posture changes, the directional indication will also change accordingly.
[0035] The utility model provides a vision-based laser cutting system 1.
[0036] See also Figure 1 The vision-based laser cutting system 1 of this embodiment includes a base 10, a first driving component 20, a bearing component 30 and a laser cutting component 40. The first driving component 20 is installed on the base 10; the bearing component 30 is installed on the first driving component 20, and the first driving component 20 drives the bearing component 30 to move in a horizontal direction. A negative pressure adsorption component is provided on the bearing component 30, and the negative pressure adsorption component is used to draw negative pressure on the workpiece to be cut so as to fix the workpiece to be cut on the bearing component 30; the laser cutting component 40 is installed on the base 10 and is located above the bearing component 30. The laser cutting component 40 is used to emit laser to cut the workpiece to be cut, and a visual identification component 50 is provided on the laser cutting component 40.
[0037] In the technical solution of the utility model, the workpiece to be cut is carried and fixed by the supporting component 30, and the first driving component 20 drives the supporting component 30 to move in the horizontal direction, and then drives the workpiece to be cut to move in the horizontal direction, so that the laser cutting component 40 can cut the workpiece to be cut along the processing trajectory, and at the same time, the actual size of the workpiece to be cut is identified by the visual identification component 50, and the processing trajectory is corrected according to the actual size of the workpiece to be cut, so as to prevent the actual cutting part from being offset from the desired cutting part, thereby improving the product yield. At the same time, due to the traditional clamping and fixing method, the clamping claw or clamping arm will block part of the surface of the workpiece to be cut, resulting in part of the workpiece to be cut that cannot be identified by the visual identification component 50. Therefore, negative pressure is applied to the workpiece to be cut by the negative pressure adsorption component to fix the workpiece to be cut, and the workpiece to be cut will not be blocked, thereby improving the recognition coverage of the visual identification component 50, further improving the accuracy of the processing trajectory, and improving the product yield.
[0038] See also Figure 3 Further, the first driving assembly 20 includes an X-axis module and a Y-axis module, the X-axis module is mounted on the base 10, the Y-axis module is mounted on the X-axis module, and the bearing component 30 is mounted on the Y-axis module, or the Y-axis module is mounted on the base 10, the X-axis module is mounted on the Y-axis module, and the bearing component 30 is mounted on the X-axis module. By driving the bearing component 30 in the horizontal direction through the X-axis module and the Y-axis module, high-precision positioning and motion control can be provided, which can be used to form a multi-axis motion system, providing multi-axis control and complex motion trajectories.
[0039] In one embodiment, a slide rail 11 is provided on the base 10, and a slider 23 for slidingly contacting and cooperating with the slide rail 11 is provided at the bottom of the X-axis module or the Y-axis module. Specifically, when the X-axis module is installed on the Y-axis module, the slider 23 is provided at the bottom of the X-axis module, and when the Y-axis module is installed on the X-axis module, the slider 23 is provided at the bottom of the Y-axis module. Through the sliding contact and cooperation between the slider 23 and the slide rail 11, the X-axis module or the Y-axis module can slide and provide support, thereby increasing the stability of the X-axis module or the Y-axis module.
[0040] Specifically, the bearing member 30 includes a bearing platform 31 and a rotating assembly 32. The rotating assembly 32 is mounted on the first driving assembly 20, and the bearing platform 31 is mounted on the rotating assembly 32. The rotating assembly 32 is used to drive the bearing platform 31 to rotate. The rotating assembly 32 drives the bearing platform 31 to rotate, thereby improving the flexibility of the bearing platform 31, so that the workpiece to be cut can have a more complex processing trajectory, thereby improving the processing accuracy.
[0041] Further, the rotating assembly 32 includes a first rotating driving member 321, a second rotating driving member 322 and a third rotating driving member 323. The rotating shaft of the first rotating driving member 321 is arranged along the Z axis, the rotating shaft of the second rotating driving member 322 is arranged along the X axis, and the rotating shaft of the third rotating driving member 323 is arranged along the Y axis. The first rotating driving member 321 is installed on the first driving assembly 20; the second rotating driving member 322 is installed on the first rotating driving member 321, the third rotating driving member 323 is installed on the second rotating driving member 322, and the supporting platform 31 is installed on the third rotating driving member 323, or the third rotating driving member 323 is installed on the first rotating driving member 321, the second rotating driving member 322 is installed on the third rotating driving member 323, and the supporting platform 31 is installed on the second rotating driving member 322.
[0042] The workpiece to be cut is rotated on three axes by three rotating drive members arranged along the X, Y and Z axes respectively, so that the multi-axis control of the carrier 31 can be realized, which is helpful for processing complex geometric shapes, and the position of laser cutting can be fine-tuned in different directions to achieve more delicate and complex cutting requirements. Multi-axis control allows the stage to move in a variety of ways, so that workpieces of various shapes and sizes can be processed more effectively. This improves production efficiency and processing speed.
[0043] In one embodiment, a baffle (not shown) is provided on the outer side of the carrier 31, and the baffle is used to abut against the workpiece to be cut. Since the present application uses negative pressure to adsorb the workpiece to be cut, the workpiece to be cut is easy to separate from the carrier component 30 during the rotation process. Therefore, by providing a baffle on the periphery of the carrier 31, the stability of the workpiece to be cut can be improved, and the workpiece to be cut can be prevented from moving during the cutting process, thereby improving the cutting accuracy and product yield.
[0044] Please combine Figure 1 and Figure 2 In one embodiment, a bracket 12 is provided on the base 10, and the bracket 12 includes two legs 121 and a mounting frame 122. The two legs 121 are installed on opposite sides of the base 10, and the two ends of the mounting frame 122 are respectively connected to the two legs 121, so that the mounting frame 122 is located on the top of the bearing component, and the laser cutting component 40 is installed on the mounting frame 122. The mounting frame 122 is supported on a plane higher than the bearing component 30 by the legs 121, so that the laser cutting component 40 can be higher than the workpiece to be cut, which can ensure that the laser is focused near the focal point instead of on the surface of the workpiece to be cut. This helps to maintain the high energy density of the laser and achieve finer cutting. It can also avoid the contact between the laser head and other accessories and the workpiece to be cut, reducing the friction and possible damage generated during operation. This helps to maintain the stability of the laser head and extend the life of the equipment.
[0045] See also Figure 2 Specifically, the laser cutting assembly 40 includes a laser source 41, a reflective assembly 42, a connecting frame 43 and a laser cutting head 44. The connecting frame 43 and the laser source 41 are mounted on the mounting frame 122. The laser source 41 is arranged horizontally. The laser cutting head 44 and the visual identification member 50 are mounted on the mounting frame 122 and extend in the vertical direction. The reflective assembly 42 is mounted on the mounting frame 122 and the connecting frame 43 and is used to reflect the laser emitted by the laser source 41 to the laser cutting head 44. The laser source 41 is arranged horizontally, which can improve the stability of the laser source 41, prevent the laser source 41 from contacting and being damaged by other components, and extend its service life. At the same time, it can reduce the longitudinal space occupied by the laser cutting assembly 40 and reduce the volume of the overall structure.
[0046] Furthermore, a Z-axis module is provided on the connecting frame 43, and the laser cutting head 44 and the visual identification member 50 are installed on the Z-axis module in a liftable manner. The laser cutting head 44 is installed on the Z-axis module in a liftable manner. As the thickness of the workpiece changes, the position of the laser beam focus also needs to be adjusted accordingly to maintain a good cutting effect. The liftable cutting head enables the position of the laser head to be adjusted to adapt to different thicknesses of the workpiece without changing the focal distance.
[0047] In one embodiment, the visual recognition element 50 is a CCD camera. The CCD camera has high resolution and can provide detailed images, which helps to achieve accurate visual recognition. The CCD camera is highly sensitive to light and can work under low light conditions. The CCD camera usually has a low noise level during image acquisition, which helps to provide clear images and reduce visual recognition errors.
[0048] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A vision-based laser cutting system, characterized in that: include: Pedestal; a first drive assembly, the first drive assembly being mounted on the base; A bearing component, wherein the bearing component is mounted on the first driving assembly, the first driving assembly drives the bearing component to move in a horizontal direction, and a negative pressure adsorption component is provided on the bearing component, and the negative pressure adsorption component is used to draw negative pressure on the workpiece to be cut so as to fix the workpiece to be cut on the bearing component; A laser cutting assembly is installed on the base and is located above the supporting component. The laser cutting assembly is used to emit laser to cut the workpiece to be cut. A visual identification component is provided on the laser cutting assembly.
2. The vision-based laser cutting system of claim 1, wherein: The first driving assembly includes an X-axis module and a Y-axis module, the X-axis module is mounted on the base, the Y-axis module is mounted on the X-axis module, and the bearing component is mounted on the Y-axis module, or the Y-axis module is mounted on the base, the X-axis module is mounted on the Y-axis module, and the bearing component is mounted on the X-axis module.
3. The vision-based laser cutting system of claim 2, wherein: A slide rail is arranged on the base, and a slider for slidingly contacting and cooperating with the slide rail is arranged at the bottom of the X-axis module or the Y-axis module.
4. The vision-based laser cutting system of claim 1, wherein: The bearing component includes a bearing platform and a rotating assembly. The rotating assembly is mounted on the first driving assembly. The bearing platform is mounted on the rotating assembly. The rotating assembly is used to drive the bearing platform to rotate.
5. The vision-based laser cutting system of claim 4, wherein: The rotating assembly comprises a first rotating driving member, a second rotating driving member and a third rotating driving member, wherein the rotating shaft of the first rotating driving member is arranged along the Z axis, the rotating shaft of the second rotating driving member is arranged along the X axis, the rotating shaft of the third rotating driving member is arranged along the Y axis, and the first rotating driving member is mounted on the first driving assembly; The second rotating driving member is mounted on the first rotating driving member, the third rotating driving member is mounted on the second rotating driving member, and the supporting platform is mounted on the third rotating driving member, or the third rotating driving member is mounted on the first rotating driving member, the second rotating driving member is mounted on the third rotating driving member, and the supporting platform is mounted on the second rotating driving member.
6. The vision-based laser cutting system of claim 4, wherein: A baffle is arranged on the outer side of the supporting platform, and the baffle is used to abut against the workpiece to be cut.
7. The vision-based laser cutting system according to any one of claims 1 to 6, characterized in that: A bracket is arranged on the base, and the bracket includes two legs and a mounting frame. The two legs are mounted on opposite sides of the base, and the two ends of the mounting frame are respectively connected to the two legs so that the mounting frame is located on the top of the bearing component, and the laser cutting assembly is mounted on the mounting frame.
8. The vision-based laser cutting system of claim 7, wherein: The laser cutting assembly includes a laser source, a reflection assembly, a connecting frame and a laser cutting head. The connecting frame and the laser source are installed on the mounting frame. The laser source is arranged horizontally. The laser cutting head and the visual identification component are installed on the mounting frame and extend in the vertical direction. The reflection assembly is installed on the mounting frame and the connecting frame, and is used to reflect the laser emitted by the laser source to the laser cutting head.
9. The vision-based laser cutting system of claim 8, wherein: The connecting frame is provided with a Z-axis module, and the laser cutting head and the visual identification component are installed on the Z-axis module in a liftable manner.
10. The vision-based laser cutting system according to any one of claims 1 to 6, characterized in that: The visual recognition component is a CCD camera.