Complex aviation aluminum magnesium alloy casting laser scribing device and method

Abstract

The invention discloses a complex aviation aluminum magnesium alloy casting laser scribing device and method, and relates to the technical field of laser scribing. In order to solve the technical problems that in the prior art, high-precision and full-automatic laser scribing of complex aviation aluminum magnesium alloy castings cannot be achieved, and the precision and efficiency bottlenecks of a traditional manual mode are broken through, according to the technical scheme, the laser scribing device comprises a scribing platform; the turnover tool comprises a tool frame and a turnover mechanism, the tool frame is horizontally placed on the scribing platform, and the turnover mechanism is used for driving the tool frame and the clamped aluminum magnesium alloy casting to turn over at multiple fixed angles; the mechanical movement assembly comprises a high-precision sliding table module capable of moving in the X direction, the Y direction and the Z direction, and the sliding table module is installed on the scribing platform. The method can be applied to a high-precision automatic marking process of a complex aviation structural part, and is particularly suitable for multi-surface positioning and precise marking of an aluminum magnesium alloy casting.

Description

Technical Field

[0001] It relates to the technical field of laser scribing, and specifically to a laser scribing device and method for complex aviation aluminum-magnesium alloy castings. Background Technique

[0002] With the development of the aviation manufacturing industry towards high precision, high complexity and high automation, a large number of aviation components with complex structures (such as engine casings, turbine housings, etc.) are gradually cast and formed using aluminum-magnesium alloy materials. Such castings usually have complex structural features such as asymmetric curved surfaces, multi-level steps, and internal cavities, posing higher precision and consistency requirements for subsequent processing technologies. Among them, the scribing process, as a key preparatory step before processing, directly affects the positioning reference and precision control of subsequent processing, and is a fundamental link to ensure the machining quality of parts.

[0003] Currently, the mainstream scribing method in the industry is still mainly manual. Scribing personnel rely on auxiliary tools such as scribing platforms, height gauges, and special templates to complete the positioning and scribing of workpieces through visual inspection and experience. For example, in some scribing scenarios of engine castings, the operator needs to flip the workpiece multiple times to complete the scribing of each surface, and manually align the positioning reference surface, resulting in the scribing accuracy being highly dependent on personnel experience and operation proficiency. This traditional scribing method generally has the following problems:

[0004] Unstable scribing accuracy: It is difficult to accurately match complex curved surfaces and irregular structures through simple measuring tools and templates. Especially in areas with free-form surfaces or irregular structures, it is difficult for manual operations to achieve high-precision positioning and scribing.

[0005] Large repeated clamping errors: Since manual operations require flipping the workpiece multiple times for multi-angle scribing, the clamping process is prone to introducing cumulative errors, seriously affecting the overall scribing quality.

[0006] Low efficiency and high labor cost: The scribing time for each complex workpiece is long, relying on skilled operators, and it is difficult to meet the requirements of batch manufacturing.

[0007] Poor consistency, unable to trace and record: The scribing process lacks digital records, which is not conducive to process standardization management and quality traceability.

[0008] In response to the above problems, some research has begun to explore automated scribing methods. For example, some research has proposed using laser projection to assist scribing, by projecting the CAD path onto the surface of the workpiece for manual tracing; there are also systems that attempt to combine industrial robots with vision systems for automatic scribing of simple structural parts. However, most of these methods are limited to planar or regular structures, and it is difficult to adapt to the structural characteristics of complex aviation castings such as high curvature, irregularity, and multi-orientation. Moreover, there are still problems such as large positioning errors, difficult coordinate system docking, and limited path planning.

[0009] In summary, how to achieve high-precision, fully automatic laser scribing of complex aviation aluminum-magnesium alloy castings and break through the accuracy and efficiency bottleneck of traditional manual methods has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0010] In order to solve the technical problem that the prior art cannot achieve high-precision, fully automatic laser scribing of complex aviation aluminum-magnesium alloy castings and break through the accuracy and efficiency bottleneck of traditional manual methods, the technical solution provided by the present invention is:

[0011] A laser scribing device for complex aviation aluminum-magnesium alloy castings, comprising:

[0012] Line platform;

[0013] The reversible tooling includes a tooling frame and a reversing mechanism, wherein the tooling frame is horizontally placed on the marking platform, and the reversing mechanism is used to drive the tooling frame and the clamped aluminum-magnesium alloy casting to achieve reversal at multiple fixed angles;

[0014] The mechanical motion component comprises a high-precision slide module movable along three directions of X, Y and Z, and the slide module is installed on the scribing platform.

[0015] Furthermore, a preferred embodiment is provided in which the marking platform is provided with an automatic leveling and alignment mechanism for ensuring that the platform is in a horizontal state.

[0016] Furthermore, a preferred embodiment is provided, wherein the reversible tool further comprises a positioning device, and the positioning device is used to realize the conversion between the scanning coordinate system and the marking path coordinate system.

[0017] Furthermore, a preferred embodiment is provided, in which a mounting frame is provided on the top of the mechanical motion component, and the mounting frame is provided with a first station and a second station, which are used to install the laser three-dimensional imaging system and the laser scribing system respectively.

[0018] Further, a preferred embodiment is provided, wherein the laser three-dimensional imaging system comprises a laser scanner, an image processing system and a data transmission interface, and is used to perform three-dimensional modeling of the aluminum-magnesium alloy casting and generate a line area image;

[0019] Furthermore, a preferred embodiment is provided, wherein the laser scribing system comprises a laser, a focusing assembly and a control module, and is used to perform laser scribing operations on the surface of the aluminum-magnesium alloy casting according to a generated scribing path.

[0020] Based on the same inventive concept, the present invention also provides a laser scribing method for complex aviation aluminum-magnesium alloy castings, which is implemented based on the device and includes:

[0021] Steps for collecting three-dimensional point cloud data of aluminum-magnesium alloy castings;

[0022] Steps for identifying the structural features of aluminum-magnesium alloy castings, determining the scribing area, and generating initial scribing path data;

[0023] Steps for parsing coordinate transformation parameters and converting the scribing path data from the scanning coordinate system to the data in the scribing execution coordinate system based on the parameters;

[0024] Steps for generating a scribing path control signal, including parameters such as scribing trajectory, scribing speed, laser power, and scribing width.

[0025] Based on the same inventive concept, the present invention also provides a computer storage medium for storing a computer program. When the computer program is read by a computer, the computer executes the method described above.

[0026] Based on the same inventive concept, the present invention also provides a computer, including a processor and a storage medium. When the processor reads the computer program stored in the storage medium, the computer executes the method described above.

[0027] Based on the same inventive concept, the present invention also provides a computer program product. As a computer program, when the computer program is executed, the method described above is implemented.

[0028] Compared with the prior art, the beneficial effects of the technical solution provided by the present invention are as follows:

[0029] By introducing a laser three-dimensional imaging system, high-precision digital scanning of the overall structure of complex aviation aluminum-magnesium alloy castings is realized, and the curved surface details and multi-level structure morphologies of complex castings can be completely captured. Compared with the traditional method that relies on manual measuring tools for positioning, the laser imaging system has advantages such as non-contact, fast modeling, and small errors, providing accurate and unified three-dimensional coordinate data for subsequent automatic scribing, and greatly improving the positioning accuracy and digital level of scribing.

[0030] A high-precision slide table module in the mechanical motion component is used to achieve controllable movement of the laser device in three-dimensional space, enabling the scribing device to flexibly meet the scribing requirements at different positions and angles on the casting. In the existing system, it mostly relies on a fixed-angle processing platform or manually rotating equipment, which is difficult to cover complex surface positions. However, the present invention realizes the execution of the scribing path for special-shaped structures without dead angles through a six-degree-of-freedom motion control system, significantly improving the adaptability and scribing quality.

[0031] An invertible tooling structure is introduced, which supports precise flipping of workpieces at different angles (such as 0°, 90°, 180°, 270°), enabling complex castings to be comprehensively scanned and marked from multiple perspectives while maintaining positioning accuracy. Different from the prior art where manual flipping requires re-aligning and positioning, the present invention realizes automatic identification and conversion of coordinate systems through an integrated flipping structure and a positioning device built into the tooling frame, effectively avoiding repeated clamping errors and ensuring the consistency and continuity of the marking reference.

[0032] The laser marking system of the present invention is equipped with a control system, which can adjust the laser power, marking speed, and marking width according to the workpiece material and surface structure, enabling the marking trajectory to adapt to the processing requirements of different regions. Traditional manual marking is prone to problems such as uneven scratch depths when dealing with smooth surfaces or materials with different reflectivity rates, while this system realizes automatic matching of laser parameters, improving the consistency and clarity of marking and meeting the precision process standards of aviation parts.

[0033] The combination of the image processing system and the path planning algorithm enables the automatic generation of the laser marking path based on the three-dimensional imaging results and optimizes the path in combination with the structural characteristics of the casting. Compared with traditional template comparison or empirical marking, the path planning system realizes seamless mapping from CAD drawings to physical objects, greatly reducing manual intervention and achieving a highly consistent marking process, which is of great significance for the standardization and automation of the aviation manufacturing process.

[0034] The integrated design of the control cabinet integrates all system power supplies, signal processing, and display modules, not only improving the convenience of system operation but also facilitating real-time monitoring and parameter adjustment of the entire marking process. Compared with the decentralized control structure in existing marking equipment, the control cabinet design of this solution is convenient for rapid deployment and management at the production site, helping to improve the stability of the equipment and the maintainability of the system.

[0035] It can be applied to the high-precision automatic marking process of complex aviation structural parts, especially suitable for multi-face positioning and precision marking of aluminum-magnesium alloy castings. Detailed implementation mode

[0036] To make the advantages and beneficial effects of the technical solution provided by the present invention more clearly manifested, the technical solution provided by the present invention is further described in detail below in combination with the solution. Specifically:

[0037] Embodiment 1. This embodiment provides a laser marking device for complex aviation aluminum-magnesium alloy castings, including:

[0038] A marking platform;

[0039] The flip - over tooling includes a tooling frame and a flip - over mechanism. The tooling frame is horizontally placed on a scribing platform, and the flip - over mechanism is used to drive the tooling frame and the clamped aluminum - magnesium alloy casting to achieve flipping at multiple fixed angles.

[0040] The mechanical motion assembly includes high - precision slide module groups that can move along the X, Y, and Z directions. The slide module groups are installed on the scribing platform.

[0041] Embodiment 2: This embodiment further limits a laser scribing device for complex aviation aluminum - magnesium alloy castings provided in Embodiment 1. The scribing platform is provided with an automatic leveling and alignment mechanism to ensure that the platform is in a horizontal state.

[0042] Embodiment 3: This embodiment further limits a laser scribing device for complex aviation aluminum - magnesium alloy castings provided in Embodiment 1. The flip - over tooling further includes a positioning device, which is used to realize the conversion between the scanning coordinate system and the scribing path coordinate system.

[0043] Embodiment 4: This embodiment further limits a laser scribing device for complex aviation aluminum - magnesium alloy castings provided in Embodiment 1. The top of the mechanical motion assembly is provided with a mounting rack, and the mounting rack is provided with a first working position and a second working position, which are respectively used to install a laser three - dimensional imaging system and a laser scribing system.

[0044] Embodiment 5: This embodiment further limits a laser scribing device for complex aviation aluminum - magnesium alloy castings provided in Embodiment 4. The laser three - dimensional imaging system includes a laser scanner, an image processing system, and a data transmission interface, which is used to perform three - dimensional modeling on the aluminum - magnesium alloy casting and generate a scribing area image.

[0045] Embodiment 6: This embodiment further limits a laser scribing device for complex aviation aluminum - magnesium alloy castings provided in Embodiment 4. The laser scribing system includes a laser, a focusing component, and a control module, which is used to perform laser scribing operations on the surface of the aluminum - magnesium alloy casting according to the generated scribing path.

[0046] Embodiment 7: This embodiment provides a laser scribing method for complex aviation aluminum - magnesium alloy castings, which is realized based on the device provided in Embodiment 1 and includes:

[0047] The step of collecting three - dimensional point cloud data of the aluminum - magnesium alloy casting;

[0048] The step of identifying the structural features of the aluminum - magnesium alloy casting, determining the scribing area, and generating initial scribing path data;

[0049] A step of parsing coordinate conversion parameters, and converting the marking path data from a scanning coordinate system to data in a marking execution coordinate system based on the parameters;

[0050] The step of generating a scribing path control signal includes scribing trajectory, scribing speed, laser power and scribing width parameters.

[0051] Embodiment 8: This embodiment provides a computer storage medium for storing a computer program. When the computer program is read by a computer, the computer executes the method provided in embodiment 7.

[0052] Embodiment 9: This embodiment provides a computer, including a processor and a storage medium. When the processor reads a computer program stored in the storage medium, the computer executes the method provided in embodiment 7.

[0053] Embodiment 10: This embodiment provides a computer program product, which is a computer program. When the computer program is executed, the method provided in embodiment 7 is implemented.

[0054] Implementation eleven: This implementation further describes the above technical solution in detail through specific examples, specifically:

[0055] 1. Marking platform structure

[0056] The scribing platform is the basic support component of the device. It is composed of a high-strength aluminum alloy frame and a precision graphite platform plate. There are multiple electronic leveling feet at the bottom of the platform, which are connected to the four corners and the center of the platform. Each foot has a built-in micro electric lifting unit and an inclination sensor. The control system dynamically adjusts the height of the foot through feedback data to achieve automatic leveling within the range of ±0.01mm. The surface of the platform is equipped with standard positioning holes and T-slots to facilitate the rapid installation of tooling or workpiece frames.

[0057] 2. Reversible tooling structure

[0058] The tooling consists of a rigid welded frame (rectangular structure) and an internally installed flip bearing mechanism. The flip structure supports multi-angle (e.g. 0°, 90°, 180°, 270°) locking and positioning, and the rotation is controlled by an electric servo drive mechanism. The flip mechanism is connected to the shaft seats on both sides of the frame, and the rotation angle is accurately locked by the brake pin. The workpiece is fixed in the tooling frame by a customized fixture, which contains multiple adjustable clamping claws and buffer pads. A set of high-precision optical positioning devices is provided on the frame to detect the posture and reference coordinate system position after flipping, and compare it with the three-dimensional scanning coordinates through a QR code or laser mark for subsequent coordinate conversion.

[0059] 3. Mechanical motion component structure

[0060] This component is the bearing and moving platform for the laser device in the apparatus. It adopts a three-axis linkage structure, including three high-precision slide module groups of the X-axis, Y-axis, and Z-axis. Each module group has a combined structure of ball screw + guide rail, with a repeat positioning accuracy of ≤ ±5μm. The module groups are connected through an aluminum alloy integrated mounting frame. There are two mounting positions respectively at the top of the mounting frame for installing the laser three-dimensional scanning system and the laser scribing head. The module groups are connected to the platform through shock-absorbing seats to reduce vibration interference during operation.

[0061] IV. Structure of the Laser Three-Dimensional Imaging System

[0062] The laser imaging system uses an industrial-grade laser scanner, which is installed on the slide module group with a 360° rotating bracket. The scanner adopts a blue laser projection + dual-camera structure, supporting the acquisition of point cloud data at the 0.01mm level, and the scanning view range reaches 250×250mm. 2 The system is internally configured with a high-performance image processing module and a GPU acceleration processor to realize real-time point cloud stitching, surface modeling, edge feature extraction, and region recognition. The scanned data can be directly exported in.STL / .PLY format for the path planning module to call.

[0063] V. Structure of the Laser Scribing System

[0064] The laser scribing system includes a fiber laser, a galvanometer scanner, a focusing system, a cooling system, and a control module. The adjustable power range of the light source is 10W - 50W, supporting the switching between pulse mode and continuous mode. The galvanometer system is installed on the Z-axis slide table and can vibrate and deflect at high speed along the scribing path to achieve linear scribing. The focusing head is internally equipped with a laser shaping and compression lens group to ensure uniform scribing depth under different surface materials and reflection conditions. The system also has an automatic power adjustment function, which automatically optimizes parameters according to the material, color, etc. of the scribing area to improve the consistency of the scribing effect.

[0065] VI. Structure of the Control Cabinet and Control System

[0066] The control cabinet is an integrated industrial control unit as a whole, adopting a metal shielding cabinet structure, with good electromagnetic isolation and heat dissipation performance. The following modules are set inside the control cabinet:

[0067] Main control unit (industrial control computer or embedded controller)

[0068] It is used to run the control software, execute core logics such as task management, parameter configuration, path parsing, and instruction distribution, equipped with a high-speed processor and an industrial-grade operating system, and supports multiple industrial communication protocols such as EtherCAT, CAN, and Modbus.

[0069] Motion control module

[0070] It includes multiple servo drivers and motion control cards, which are used to control the synchronous movement of the three-axis slide table module to ensure the precise position adjustment of the laser head; it supports microstep pulse control and closed-loop feedback functions.

[0071] Laser control module

[0072] It realizes the management of functions such as the start and stop of the laser, power adjustment, frequency control, and optical path switch, and has the ability to communicate with the main control system at high speed to ensure real-time synchronization with the motion instructions.

[0073] Scanning system power supply and interface module

[0074] It provides stable power for the laser three-dimensional scanner, has an image data acquisition interface, and transmits scanned images to the main control system through high-speed USB or Ethernet.

[0075] Input / output module (I / O)

[0076] It is used to access signals such as angle sensors, limit switches, emergency stop buttons, and photodetectors of the flipping fixture, and realizes the state perception and response control of external devices.

[0077] Human-machine interaction module (HMI)

[0078] An industrial touch display screen is set at the front end of the control cabinet, which is used to display 3D models, scribing paths, equipment status, and parameter setting interfaces, and supports function operations such as task import, execution monitoring, and manual debugging.

[0079] II. Software functions of the control system

[0080] The control system runs on the control software platform in the main control unit, and its functions include:

[0081] Task loading and scribing path parsing

[0082] It supports the import of CAD models and 3D point cloud files, automatically identifies the scribing area, calls the path planning algorithm to generate the execution path, and supports user-defined parameter editing.

[0083] Coordinate transformation and path calibration

[0084] It receives the coordinate offset parameters uploaded by the flipping fixture positioning device, completes the transformation of the scribing path from the scanning coordinate system to the scribing execution coordinate system, and ensures the precise projection of the path on the actual workpiece surface.

[0085] Real-time motion control

[0086] The control system generates motion trajectory instructions in real time and outputs them in parallel with the laser emission instructions to ensure strict synchronization between the scribing position and the laser startup; it supports trajectory preloading and breakpoint recovery functions.

[0087] System Monitoring and Alarm Handling

[0088] The control system continuously collects feedback information from each subsystem, including motor status, laser temperature, scribing progress, scanning status, etc. Once an abnormality occurs, it will automatically alarm and enter the protection process.

[0089] Data Recording and Traceability Management

[0090] The system supports generating a unique number for each scribing task, automatically recording information such as scribing time, path file, execution parameters, equipment operation status, etc., which is convenient for later process traceability and quality analysis.

[0091] In order to achieve high-precision automated laser scribing of complex aviation aluminum-magnesium alloy castings, the present invention provides a laser scribing method for complex aluminum-magnesium alloy castings. The specific implementation steps include:

[0092] Step 1: Install and level the scribing platform

[0093] Step 2: Fix the casting and flip it to the scribing view plane

[0094] Step 3: Three-dimensional laser scanning and image processing

[0095] Step 4: Scribing path planning and coordinate transformation

[0096] Step 5: Laser scribing execution

[0097] Step 6: System control and overall coordination

[0098] The following is a detailed description of each step:

[0099] Step 1: Install and level the scribing platform

[0100] First, the laser scribing device of the present invention is integrally installed in the machining workshop of aviation manufacturing or the scribing pretreatment station to ensure a clean and stable working environment. The scribing platform is the basic support structure of the device, and an automatic leveling and alignment mechanism is provided thereon, which can automatically adjust the height of the support points according to the feedback data of multiple sensors below the platform, thereby realizing the high-precision horizontal positioning of the overall platform. This leveling and alignment process provides an accurate reference benchmark for subsequent workpiece positioning and three-dimensional scanning.

[0101] Output: Obtain a scribing platform with qualified horizontal accuracy as the basis for subsequent workpiece clamping.

[0102] Step 2: Fix the casting and flip it to the scribing view plane

[0103] Place the complex aviation aluminum-magnesium alloy casting to be marked on a reversible tooling fixture. The tooling fixture includes a tooling frame that mates with the marking platform, multiple flipping mechanisms for angle control, and a positioning device disposed within the tooling frame. An operator or the system control program controls the flipping mechanism to turn the workpiece to a position with the marking surface facing up, which can be set to 0°, 90°, 180°, or 270° respectively if multi-view marking is required for the view. The positioning device stores the relationship between the scanning coordinate system and the marking path coordinate system, providing parameter support for subsequent coordinate transformation.

[0104] Output: Complete workpiece installation and angle adjustment, and prepare for 3D scanning.

[0105] Step 3: 3D laser scanning and image processing

[0106] Move the 3D laser scanning system to the working position above the workpiece. The system performs non-contact full-view scanning of the entire casting surface through a high-precision laser scanner, generating a high-precision 3D point cloud map of the casting and the clamping structure. The point cloud data is processed by the image processing system to construct a complete 3D digital model, and the feature positions, edge structures, and areas to be marked are identified through software. The image processing system inputs the 3D model into the path planning module, providing input data for generating the marking path.

[0107] Output: Complete digital modeling of the workpiece and extract marking area information.

[0108] Step 4: Marking path planning and coordinate transformation

[0109] Based on the 3D modeling results and the data of the CAD drawing to be marked, the path planning algorithm automatically generates the marking path and sets parameters such as the marking order, line width, and line spacing in combination with the processing requirements. Subsequently, the system identifies the spatial transformation relationship between the marking coordinate system and the scanning coordinate system through the positioning device on the tooling fixture, performs coordinate system transformation, so that the marking path is accurately mapped onto the actual casting surface. The path result is transmitted in real time to the laser marking system for preparation of execution.

[0110] Output: Generate a marking path that matches the casting structure and complete the spatial coordinate transformation.

[0111] Step 5: Laser marking execution

[0112] The control system drives the laser marking assembly to start the marking operation. The marking system makes precise marks on the casting surface through the laser. Its marking parameters (such as laser power, marking speed, line width, etc.) are automatically adjusted by the control system to adapt to different materials or surface reflection conditions. The laser marking system is installed on the mechanical motion assembly, and continuous marking along the planned path is achieved with the high-precision movement of the slide module. For workpieces that require marking on multiple surfaces, steps 3 to 5 can be repeated at different angles in combination with the flipping mechanism.

[0113] Output: Complete multi-perspective and highly consistent scribing of complex-structured castings.

[0114] Step 6: System control and overall coordination

[0115] The entire system is uniformly controlled by a control cabinet, including a slide control module, a power supply for the scanning system, a power supply for the scribing system, a control computer, and a display. Users can input scribing drawings through the control computer, monitor the scribing progress, adjust parameters, and record the results. All key data and process flows can be digitally stored for subsequent quality traceability and process optimization.

[0116] Output: Complete the entire laser scribing process, generate a scribing process record, and have mass production adaptability.

[0117] Through the above implementation steps, the present invention can perform high-precision and high-efficiency laser automated scribing on aviation aluminum-magnesium alloy castings with complex structures and multi-faceted special shapes, overcoming the defects of low precision, poor consistency, and high labor costs of traditional manual scribing, and having good industrial promotion and application value.

[0118] The above further describes the technical solutions provided by the present invention in several specific implementation manners to highlight the advantages and beneficial effects of the technical solutions provided by the present invention. However, the above-mentioned several specific implementation manners are not used as limitations on the present invention. Any reasonable modifications and improvements, combinations of implementation manners, and equivalent replacements based on the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A laser scribing device for complex aviation aluminum-magnesium alloy castings, characterized in that: include: Linear platform; The reversible tooling includes a tooling frame and a reversing mechanism, wherein the tooling frame is horizontally placed on the marking platform, and the reversing mechanism is used to drive the tooling frame and the clamped aluminum-magnesium alloy casting to achieve reversal at multiple fixed angles; The mechanical motion component comprises a high-precision slide module movable along three directions of X, Y and Z, and the slide module is installed on the scribing platform.

2. The laser scribing device for complex aviation aluminum-magnesium alloy castings according to claim 1 is characterized in that: The marking platform is provided with an automatic leveling and alignment mechanism to ensure that the platform is in a horizontal state.

3. The laser scribing device for complex aviation aluminum-magnesium alloy castings according to claim 1 is characterized in that: The reversible tool also includes a positioning device, which is used to realize the conversion between the scanning coordinate system and the marking path coordinate system.

4. The laser scribing device for complex aviation aluminum-magnesium alloy castings according to claim 1, characterized in that: A mounting frame is provided on the top of the mechanical motion component. The mounting frame is provided with a first station and a second station, which are used to install a laser three-dimensional imaging system and a laser scribing system respectively.

5. The laser scribing device for complex aviation aluminum-magnesium alloy castings according to claim 4, characterized in that: The laser three-dimensional imaging system comprises a laser scanner, an image processing system and a data transmission interface, and is used for performing three-dimensional modeling on the aluminum-magnesium alloy casting and generating a line area image.

6. The laser scribing device for complex aviation aluminum-magnesium alloy castings according to claim 4, characterized in that: The laser scribing system includes a laser, a focusing assembly and a control module, and is used to perform a laser scribing operation on the surface of the aluminum-magnesium alloy casting according to a generated scribing path.

7. A laser scribing method for complex aviation aluminum-magnesium alloy castings, characterized in that: The device according to claim 1 is implemented, comprising: Steps for collecting three-dimensional point cloud data of aluminum-magnesium alloy castings; The steps of identifying structural features of aluminum-magnesium alloy castings and determining scribing areas, and generating initial scribing path data; A step of parsing coordinate conversion parameters, and converting the marking path data from a scanning coordinate system to data in a marking execution coordinate system based on the parameters; The step of generating a scribing path control signal includes scribing trajectory, scribing speed, laser power and scribing width parameters.

8. A computer storage medium for storing a computer program, characterized in that: When the computer program is read by a computer, the computer executes the method of claim 7.

9. A computer, comprising a processor and a storage medium, characterized in that: When the processor reads the computer program stored in the storage medium, the computer executes the method of claim 7 .

10. A computer program product, being a computer program, characterized in that When the computer program is executed, the method of claim 7 is implemented.