Laser cutting device for case shell production

Abstract

The invention discloses a laser cutting device for case shell production, which relates to the technical field of laser cutting and comprises a data processing unit and a control unit. The data processing unit is used for calculating operation parameters including laser power, cutting speed and cutting path according to production tasks in combination with plate characteristics and cutting requirements; control parameters for controlling the longitudinal moving mechanism and the transverse moving mechanism to move are calculated according to the cutting path; marking the operation parameters and the control parameters as control information and sending the control information to a control unit; and the control unit is used for receiving the control information and controlling corresponding parts on the device according to the operation parameters and the control parameters. Operating parameters such as laser power and cutting speed are calculated through the data processing unit according to plate characteristics and cutting requirements, control parameters of the moving mechanism are calculated according to a cutting path, intelligent adjustment of the cutting parameters and precise planning of the cutting path are achieved, and the cutting quality and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting, and in particular to a laser cutting device for chassis shell production. Background Art

[0002] In the electronic equipment manufacturing industry, the chassis shell is a key component, and the precision and efficiency of its production and processing are crucial to product quality and production efficiency. With the development of science and technology, the design and manufacturing requirements for chassis shells are constantly increasing, and the limitations of traditional mechanical cutting methods are prominent. For example, shearing machines can only perform straight-line cutting, which cannot meet the processing requirements of complex contours, and the cutting edges are prone to burrs and deformation. Subsequent grinding and finishing work increases costs and production cycles.

[0003] Although laser cutting technology has been widely used in chassis shell production, there are still some problems. For example, the height between the laser cutting head and the plate will affect the cutting accuracy. At the same time, there is still room for improvement in the intelligent adjustment of cutting parameters, precise planning of cutting paths, and real-time monitoring and control of cutting quality. It is difficult to meet the diverse and high-precision production needs. Summary of the invention

[0004] The present invention proposes a laser cutting device for chassis shell production to solve the problems of low cutting efficiency, poor precision and insufficient quality monitoring and control in the prior art, realize intelligent adjustment of cutting parameters, precise planning of cutting paths, effective monitoring and control of cutting quality, and improve the production quality and efficiency of chassis shells.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A laser cutting device for chassis shell production, comprising a frame, a workbench is installed on the top surface of the frame, a controller is provided at the rear end of one side of the frame, a longitudinal moving mechanism and a transverse moving mechanism are provided on the top of the workbench, a cutting assembly is provided on the transverse moving mechanism, and the cutting assembly includes a laser cutting head; The controller includes a task management unit, a data processing unit, and a control unit; the task management unit is used to obtain order information of the current order, identify the production requirements in the order, and generate production tasks according to the production requirements; The data processing unit is used to calculate the operating parameters, including laser power, cutting speed, and cutting path, according to the production task combined with the plate characteristics and cutting requirements; and calculate the control parameters for controlling the movement of the longitudinal moving mechanism and the transverse moving mechanism according to the cutting path; mark the operating parameters and control parameters as control information and send them to the control unit; The control unit is used to receive control information and control corresponding components on the device according to operating parameters and control parameters.

[0006] In the present application, a mounting groove is symmetrically opened on the top surface of the workbench, a supporting platform is longitudinally fixedly connected to the middle part of the mounting groove, a supporting plate is fixedly connected to the top surface of the supporting platform, and a plurality of equidistant triangular pyramids are fixedly connected to the top surface of the supporting plate.

[0007] In the present application, the longitudinal moving mechanism includes a first screw, which is arranged in a mounting groove, and one end of the first screw is rotatably connected to one end of the inner cavity of the mounting groove, the other end of the first screw is connected to a first motor, the output shaft of the first motor is connected to the first screw through a coupling, and a moving seat is threadedly connected to the first screw, and the top of the moving seat is connected to the installation place of the transverse moving mechanism.

[0008] In the present application, the transverse moving mechanism includes two columns, the bottom ends of the two columns are connected to the tops of the corresponding moving seats in the longitudinal moving mechanism, a guide rail is transversely fixed between the upper ends of the two columns, a second motor is fixed to the upper ends of the outer sides of the columns, a second screw is transversely connected to the inside of the guide rail for rotation, one end of the second screw is connected to the output shaft of the second motor through a coupling, and a moving block is threadedly connected to the second screw, the outer side of the moving block abuts against the inner wall of the guide rail, and the front end of the moving block is placed on the outer side of the guide rail, a positioning block is fixed to the front end surface of the moving block, and the positioning block is connected to the installation position of the cutting assembly.

[0009] In the present application, the cutting assembly includes an electric push rod and a laser cutting head, and the output shaft of the electric push rod is connected to the mounting port of the laser cutting head.

[0010] In the present application, the data processing unit includes a cutting parameter analysis unit, a cutting path analysis unit and a merging transmission unit; The cutting parameter analysis unit is used to calculate the operating parameters according to the production task combined with the plate characteristics and cutting requirements, and the operating parameters include laser power, cutting speed, and cutting path; The cutting path analysis unit is used to calculate the control parameters for controlling the movement of the longitudinal moving mechanism and the transverse moving mechanism according to the cutting path, wherein the control parameters include the displacement, the moving speed and the acceleration; The combined transmission unit marks the operating parameters and the control parameters as control information and sends the control information to the control unit.

[0011] In this application, the operating parameters are calculated according to the production task combined with the plate characteristics and cutting requirements, specifically: Obtain the plate thickness of the chassis shell, the cutting speed and cutting area of ​​the laser cutting; set a preset material coefficient table, including several plate materials, and each material corresponds to a material coefficient; obtain the plate material of the chassis shell, match the plate material with the preset material coefficient table to obtain the material coefficient of the chassis shell; calculate the plate thickness, cutting speed, cutting area and material coefficient to obtain the laser power; In this application, the control parameters for controlling the movement of the longitudinal moving mechanism and the transverse moving mechanism are calculated according to the cutting path, specifically: Obtain the cutting path of the production task, and based on the Cartesian coordinate system, convert the coordinates of each point on the cutting path into the displacement of the longitudinal moving mechanism and the displacement of the lateral moving mechanism; obtain the time and acceleration or deceleration time of the corresponding moving mechanism control cycle; calculate the longitudinal moving speed and the lateral moving speed; calculate the longitudinal acceleration and the lateral acceleration; Mark the displacement, movement speed and acceleration as control parameters.

[0012] In this application, the cutting speed of the laser cutting is obtained as follows: Obtain the cutting path in the production task; identify the path length, number of turns, and turning frequency in the cutting path; perform weighted calculation on the path length, number of turns, and turning frequency to obtain the cutting difficulty coefficient; The cutting difficulty coefficient is calculated with the thickness of the chassis shell, the material coefficient of the plate material and the laser power to obtain the cutting speed.

[0013] In the present application, the data processing unit also includes a quality monitoring unit and a display interaction unit; The quality monitoring unit is used to monitor the quality of laser cutting based on sensor data and real-time images during the cutting process, and to evaluate the roughness of the cutting by calculating the gray gradient of the cutting edge pixel points in the real-time image using an edge detection algorithm based on image grayscale changes; and then to monitor the degree of deviation between the actual cutting position and the cutting path; The roughness and the degree of deviation are weighted to obtain the quality value of the chassis shell; the quality value is compared with the preset defective threshold value. If the quality value is greater than the defective threshold value, the chassis shell is marked as defective and the number of defectives is increased by one; conversely, if the quality value is less than the defective threshold value, it means that the chassis shell is qualified, and the number of qualified products is increased by one; the number of defective products and the number of qualified products are summed to obtain the current production quantity; the number of defective products is divided by the current production quantity to obtain the defective rate; the number of qualified products is divided by the current production quantity to obtain the qualified rate; Identify the total processing quantity from the production task, and mark the ratio of the current production quantity to the total processing quantity as the production progress; The roughness, deviation degree, quality value of any chassis shell in the production task and the current production quantity, defective rate, qualified number, qualified rate and production progress are marked as quality monitoring results; the display interaction unit displays the order information, control information and quality monitoring results of the current production task in an intuitive interface.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention calculates operating parameters such as laser power and cutting speed according to the characteristics of the plate and cutting requirements through a data processing unit, and calculates control parameters of the moving mechanism according to the cutting path, thereby realizing intelligent adjustment of cutting parameters and precise planning of cutting paths, and improving cutting quality and efficiency.

[0015] 2. The present invention uses a quality monitoring unit to monitor quality indicators such as cutting edge roughness and cutting path deviation in real time, and obtains quality values ​​through weighted calculation to judge defective products. At the same time, it collects statistics on production progress, defective rate and other information, thereby achieving comprehensive monitoring and effective control of cutting quality, facilitating timely discovery and resolution of problems and reducing defective rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a principle block diagram of the controller proposed by the present invention; Figure 2 It is a schematic diagram of the overall structure of the device proposed by the present invention; Figure 3 This is a schematic diagram of the overall side view structure of the device proposed by the present invention; Figure 4 This is a schematic diagram of the overall front view structure of the device proposed by the present invention; Figure 5 This is a schematic diagram of the structure of the first screw and the first motor proposed by the present invention; Figure 6 This is a schematic structural diagram of the second screw and the moving block proposed in the present invention.

[0017] Serial numbers in the figure: 1, frame; 2, workbench; 3, controller; 4, support platform; 5, support plate; 6, triangular pyramid; 7, first screw; 8, first motor; 9, moving seat; 10, column; 11, guide rail; 12, second screw; 13, second motor; 14, moving block; 15, positioning block; 16, electric push rod; 17, laser cutting head. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Example: See Figure 1-Figure 6 A laser cutting device for chassis shell production includes a frame 1, a workbench 2 is installed on the top surface of the frame 1, a controller 3 is provided at the rear end of one side of the frame 1, a longitudinal moving mechanism and a transverse moving mechanism are provided on the top of the workbench 2, and a cutting component is provided on the transverse moving mechanism, and the cutting component includes a laser cutting head 17; The controller 3 includes a task management unit, a data processing unit, and a control unit; the task management unit is used to obtain the order information of the current order, identify the production requirements in the order, and generate production tasks according to the production requirements; The data processing unit is used to calculate the operating parameters, including laser power, cutting speed, and cutting path, according to the production task combined with the characteristics of the plate and the cutting requirements; and calculate the control parameters for controlling the movement of the longitudinal moving mechanism and the transverse moving mechanism according to the cutting path; mark the operating parameters and control parameters as control information and send them to the control unit; The control unit is used to receive control information and control the corresponding components on the device according to the operating parameters and control parameters, specifically: Control of the electric push rod 16: The control unit controls the electric push rod 16 according to the plate thickness T1 of the chassis shell in the cutting task and the process requirements of laser cutting. Before cutting, the control unit will determine the required height position of the laser cutting head 17 according to the thickness of the plate, and then send a control signal to the electric push rod 16 to extend or retract the output shaft of the electric push rod 16 by a corresponding length, and adjust the laser cutting head 17 to a suitable height; during the cutting process, if it is necessary to fine-tune the height of the laser cutting head 17 according to different cutting positions or cutting requirements, the control unit will send a corresponding control signal to the electric push rod 16 again to achieve precise height adjustment to ensure the quality and effect of laser cutting; Control of the first motor 8: The control unit controls the first motor 8 according to the control parameters of the longitudinal movement mechanism, namely the longitudinal displacement Δx, the longitudinal movement speed and longitudinal acceleration , control the first motor 8; before cutting begins, the control unit will calculate the total longitudinal displacement Δx based on the initial position and the target position; when cutting begins, the control unit will adjust the speed and direction of the first motor 8 according to the longitudinal movement speed and the longitudinal acceleration. For example, if accelerated movement is required, the control unit will gradually increase the speed of the first motor 8 according to the longitudinal acceleration; if a stable longitudinal movement speed is reached, the first motor 8 will be kept running stably at the corresponding speed; when approaching the target position, the control unit will decelerate according to the longitudinal acceleration to ensure that the moving seat 9 reaches the target position accurately; at the same time, the control unit will monitor the operating status of the first motor 8 in real time, such as current, speed, etc., and adjust the control of the motor through the feedback mechanism to ensure the accuracy and stability of the longitudinal movement; Control of the second motor 13: Similar to the control of the first motor 8, the control unit controls the second motor 13 according to the control parameters of the lateral movement mechanism, namely, the lateral displacement Δy, the lateral movement speed and lateral acceleration , and controls the second motor 13. The control unit will calculate the lateral displacement, speed and acceleration according to the requirements of the cutting path, and adjust the operation of the second motor 13 accordingly. During the lateral movement process, the control unit will also monitor the operating parameters of the second motor 13 in real time to ensure that the moving block 14 can accurately move in the guide rail 11 according to the preset lateral movement speed and acceleration, so as to achieve precise position adjustment of the cutting assembly in the lateral direction; Control of the laser cutting head 17: The control unit controls the laser cutting head 17 according to the laser power P and cutting speed T2 in the operating parameters. The control unit converts the calculated laser power P into a corresponding control signal and sends it to the laser cutting head 17, so that the laser cutting head 17 outputs the required laser energy. At the same time, the control unit will coordinate the light emission time and frequency of the laser cutting head 17 according to the cutting speed T2 to ensure that the laser cutting head 17 can cut with appropriate energy and frequency during the movement of the moving mechanism at a preset speed, so as to achieve efficient and accurate cutting processing; in addition, the control unit will also monitor the working status of the laser cutting head 17, such as temperature, power stability, etc. When an abnormal situation occurs, timely adjustments or alarms are issued to ensure the normal operation of the laser cutting head 17. This part is a conventional function and is not described in detail in this application.

[0020] In the present application, a mounting groove is symmetrically provided on the top surface of the workbench 2, a supporting platform 4 is longitudinally fixedly connected to the middle part of the mounting groove, a supporting plate 5 is fixedly connected to the top surface of the supporting platform 4, and a plurality of equidistant triangular pyramids 6 are fixedly connected to the top surface of the supporting plate 5. The arrangement of the triangular pyramids 6 can reduce the contact area between the plate and the supporting surface, thereby avoiding scratches and other damages to the surface of the plate due to contact during the cutting process, and is beneficial to the heat dissipation of the plate.

[0021] In the present application, the longitudinal moving mechanism includes a first screw 7, which is arranged in the mounting groove, and one end of the first screw 7 is rotatably connected to one end of the inner cavity of the mounting groove, and the other end of the first screw 7 is connected to a first motor 8, and the output shaft of the first motor 8 is connected to the first screw 7 through a coupling, and a moving seat 9 is threadedly connected to the first screw 7, and the top of the moving seat 9 is connected to the mounting position of the transverse moving mechanism; the first screw 7 is driven to rotate by the first motor 8, and the moving seat 9 is moved longitudinally in the mounting groove through threaded transmission, thereby driving the transverse moving mechanism and the cutting assembly to adjust their positions in the longitudinal direction.

[0022] In the present application, the transverse moving mechanism includes two columns 10, the bottom ends of the two columns 10 are connected to the tops of the corresponding moving seats 9 in the longitudinal moving mechanism, a guide rail 11 is transversely fixed between the upper ends of the two columns 10, a second motor 13 is fixed to the outer upper ends of the columns 10, a second screw 12 is transversely rotatably connected inside the guide rail 11, one end of the second screw 12 is connected to the output shaft of the second motor 13 through a coupling, and a moving block 14 is threadedly connected to the second screw 12, the outer side of the moving block 14 abuts against the inner wall of the guide rail 11, and the front end of the moving block 14 is placed on the outer side of the guide rail 11, a positioning block 15 is fixed to the front end surface of the moving block 14, and the positioning block 15 is connected to the installation position of the cutting assembly; by starting the second motor 13 to drive the second screw 12 to rotate, the moving block 14 is moved transversely in the guide rail 11, thereby realizing the position adjustment of the cutting assembly in the transverse direction.

[0023] In the present application, the cutting assembly includes an electric push rod 16 and a laser cutting head 17. The output shaft of the electric push rod 16 is connected to the mounting port of the laser cutting head 17. The height of the laser cutting head 17 can be adjusted by the electric push rod 16 to adapt to plates of different thicknesses and cutting process requirements.

[0024] In the present application, the data processing unit includes a cutting parameter analysis unit, a cutting path analysis unit and a merging transmission unit; The cutting parameter analysis unit is used to calculate the operating parameters according to the production task, the plate characteristics and the cutting requirements. The operating parameters include laser power, cutting speed and cutting path. The cutting path analysis unit is used to calculate the control parameters for controlling the movement of the longitudinal moving mechanism and the transverse moving mechanism according to the cutting path, wherein the control parameters include the displacement, the moving speed and the acceleration; The combined transmission unit marks the operating parameters and the control parameters as control information and sends the information to the control unit.

[0025] In this application, the operating parameters are calculated according to the production task combined with the plate characteristics and cutting requirements, specifically: Obtain the plate thickness T1 of the chassis shell, the cutting speed T2 of the laser cutting, and the cutting area T3, where the plate thickness can be measured by a sensor or obtained from the order information, and the cutting area represents the total area required for laser cutting; set a preset material coefficient table, including several types of plate materials, and each material corresponds to a material coefficient; obtain the plate material of the chassis shell, match the plate material with the preset material coefficient table to obtain the material coefficient k1 of the chassis shell; calculate the plate thickness, cutting speed, cutting area and material coefficient to obtain the laser power P, which is expressed by the formula ; By calculating the laser power P, the laser power can be accurately adjusted according to the actual situation of the plate to ensure the cutting effect.

[0026] In this application, the control parameters for controlling the movement of the longitudinal moving mechanism and the transverse moving mechanism are calculated according to the cutting path, specifically: Obtain the cutting path of the production task, and based on the Cartesian coordinate system, convert the coordinates (x, y) of each point on the cutting path into the displacement Δx of the longitudinal moving mechanism and the displacement Δy of the transverse moving mechanism; where Δx=x2-x1, Δy=y2-y1, x2, y2 represent the vertical and horizontal coordinates of a target point on the cutting path, respectively, and x1, y1 represent the vertical and horizontal coordinates of the previous reference point of a target point on the cutting path, respectively; obtain the time of the corresponding moving mechanism control cycle With acceleration or deceleration time Calculate the longitudinal speed With lateral movement speed , the formula is: , ; Calculate longitudinal acceleration and lateral acceleration , the formula is: , ; The displacement Δx and Δy, the moving speed and and acceleration and Marked as control parameters; by calculating the control parameters, the movement of the moving mechanism is accurately controlled so that the laser cutting head 17 can move accurately according to the preset cutting path.

[0027] In this application, the cutting speed of laser cutting is obtained as follows: Obtain the cutting path in the production task; identify the path length, number of turns, and turning frequency in the cutting path; perform weighted calculation on the path length, number of turns, and turning frequency to obtain the cutting difficulty coefficient a; The cutting difficulty coefficient is calculated with the thickness T1 of the chassis shell, the material coefficient k1 of the plate material and the laser power P to obtain the cutting speed T2. The formula is: ; Wherein k2 represents the error constant; Through calculation, the intelligent adjustment of cutting speed is realized, the cutting efficiency and quality are improved, and the intelligent adjustment of cutting speed is realized, the cutting efficiency and quality are improved.

[0028] In the present application, the data processing unit also includes a quality monitoring unit and a display interaction unit; The quality monitoring unit is used to monitor the quality of laser cutting based on sensor data and real-time images during the cutting process. The edge detection algorithm based on image grayscale changes is used to evaluate the roughness of the cutting by calculating the grayscale gradient of the cutting edge pixels in the real-time image. Specifically, the Sobel operator is used as an example: Get real-time images , the gradient calculations in the e direction and r direction are: ; ; Then calculate the gradient amplitude G, the formula is: ; The calculated gradient amplitude G reflects the grayscale change degree of the pixel points at the cutting edge in the image; the larger the gradient amplitude, the more drastic the grayscale change of the cutting edge, which means that the roughness of the cutting edge may be greater; Then monitor the deviation d between the actual cutting position and the cutting path, the formula is: ;in Expressed as the coordinates of the points on the actual cutting path, Indicates the coordinates of the corresponding points on the preset cutting path; The roughness and the degree of deviation are weighted to obtain the quality value of the chassis shell; the quality value is compared with the preset defective threshold value. If the quality value is greater than the defective threshold value, the chassis shell is marked as defective and the number of defectives is increased by one; conversely, if the quality value is less than the defective threshold value, it means that the chassis shell is qualified, and the number of qualified products is increased by one; the number of defective products and the number of qualified products are summed to obtain the current production quantity; the number of defective products is divided by the current production quantity to obtain the defective rate; the number of qualified products is divided by the current production quantity to obtain the qualified rate; Identify the total processing quantity from the production task, and mark the ratio of the current production quantity to the total processing quantity as the production progress; The roughness, deviation degree, quality value of any chassis shell in the production task and the current production quantity, defective rate, qualified number, qualified rate and production progress are marked as quality monitoring results; the display interaction unit displays the order information, control information and quality monitoring results of the current production task in an intuitive interface.

[0029] Working principle: In the actual production process, when a new order is placed, the task management unit obtains the order information, identifies the production demand and generates the production task; the cutting parameter analysis unit of the data processing unit calculates the operating parameters according to the production task and the plate characteristics, and the cutting path analysis unit calculates the control parameters of the moving mechanism according to the cutting path, and the merging transmission unit integrates these parameters into control information and sends it to the control unit; the control unit drives the longitudinal moving mechanism, the transverse moving mechanism and the cutting assembly to work according to the control information to realize the laser cutting of the chassis shell; during the cutting process, the quality monitoring unit monitors the cutting quality in real time, and feeds back the quality monitoring results to the operator, while the display interaction unit displays the order information, control information and quality monitoring results, and the operator can perform corresponding operations and adjustments according to the actual situation.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laser cutting device for chassis shell production, comprising a frame (1), characterized in that: A workbench (2) is installed on the top surface of the frame (1); a controller (3) is provided at the rear end of one side of the frame (1); a longitudinal moving mechanism and a transverse moving mechanism are provided on the top of the workbench (2); a cutting assembly is provided on the transverse moving mechanism, and the cutting assembly includes a laser cutting head (17); The controller (3) comprises a task management unit, a data processing unit, and a control unit; the task management unit is used to obtain order information of a current order, identify production requirements in the order, and generate production tasks according to the production requirements; The data processing unit is used to calculate the operating parameters, including laser power, cutting speed, and cutting path, according to the production task combined with the characteristics of the plate and the cutting requirements; And calculate the control parameters for controlling the movement of the longitudinal moving mechanism and the transverse moving mechanism according to the cutting path; mark the operating parameters and the control parameters as control information and send them to the control unit; The control unit is used to receive control information and control corresponding components on the device according to operating parameters and control parameters.

2. The laser cutting device for chassis shell production according to claim 1, characterized in that: The top surface of the workbench (2) is symmetrically provided with mounting grooves, a supporting platform (4) is longitudinally fixedly connected to the middle of the mounting groove, a supporting plate (5) is fixedly connected to the top surface of the supporting platform (4), and a plurality of equidistant triangular pyramids (6) are fixedly connected to the top surface of the supporting plate (5).

3. The laser cutting device for chassis shell production according to claim 1, characterized in that: The longitudinal moving mechanism comprises a first screw (7), the other end of the first screw (7) is connected to a first motor (8), the output shaft of the first motor (8) is connected to the first screw (7) via a coupling, a moving seat (9) is threadedly connected to the first screw (7), and the top of the moving seat (9) is connected to the installation position of the transverse moving mechanism.

4. The laser cutting device for chassis shell production according to claim 1, characterized in that: The transverse movement mechanism comprises two columns (10), a guide rail (11) is transversely fixedly connected between the upper ends of the two columns (10), a second motor (13) is fixedly connected to the outer upper ends of the columns (10), a second screw rod (12) is transversely rotatably connected inside the guide rail (11), one end of the second screw rod (12) is connected to the output shaft of the second motor (13) through a coupling, and a moving block (14) is threadedly connected to the second screw rod (12), the outer side of the moving block (14) abuts against the inner wall of the guide rail (11), and the front end of the moving block (14) is placed on the outer side of the guide rail (11), a positioning block (15) is fixedly connected to the front end surface of the moving block (14), and the positioning block (15) is connected to the installation position of the cutting assembly.

5. The laser cutting device for chassis shell production according to claim 4, characterized in that: The cutting assembly comprises an electric push rod (16) and a laser cutting head (17), wherein an output shaft of the electric push rod (16) is connected to a mounting opening of the laser cutting head (17).

6. The laser cutting device for chassis shell production according to claim 1, characterized in that: The data processing unit includes a cutting parameter analysis unit, a cutting path analysis unit and a merging transmission unit; The cutting parameter analysis unit is used to calculate the operating parameters according to the production task combined with the plate characteristics and cutting requirements, and the operating parameters include laser power, cutting speed, and cutting path; The cutting path analysis unit is used to calculate the control parameters for controlling the movement of the longitudinal moving mechanism and the transverse moving mechanism according to the cutting path, wherein the control parameters include the displacement, the moving speed and the acceleration; The combined transmission unit marks the operating parameters and the control parameters as control information and sends the control information to the control unit.

7. The laser cutting device for chassis shell production according to claim 6, characterized in that: Calculate the operating parameters based on the production task, plate characteristics and cutting requirements, specifically: Obtain the plate thickness of the chassis shell, the cutting speed and cutting area of ​​the laser cutting; set a preset material coefficient table, including several plate materials, and each material corresponds to a material coefficient; obtain the plate material of the chassis shell, match the plate material with the preset material coefficient table to obtain the material coefficient of the chassis shell; calculate the plate thickness, cutting speed, cutting area and material coefficient to obtain the laser power.

8. The laser cutting device for chassis shell production according to claim 6, characterized in that: The control parameters for controlling the movement of the longitudinal moving mechanism and the transverse moving mechanism are calculated according to the cutting path, specifically: Obtain the cutting path of the production task, and based on the Cartesian coordinate system, convert the coordinates of each point on the cutting path into the displacement of the longitudinal moving mechanism and the displacement of the lateral moving mechanism; obtain the time of the corresponding moving mechanism control cycle and the acceleration or deceleration time; Calculate the longitudinal moving speed and the lateral moving speed; calculate the longitudinal acceleration and the lateral acceleration; Mark the displacement, movement speed and acceleration as control parameters.

9. The laser cutting device for chassis shell production according to claim 7, characterized in that: The cutting speed of the laser cutting is obtained as follows: Obtain the cutting path in the production task; identify the path length, number of turns, and turning frequency in the cutting path; perform weighted calculation on the path length, number of turns, and turning frequency to obtain the cutting difficulty coefficient; The cutting difficulty coefficient is calculated with the thickness of the chassis shell, the material coefficient of the plate material and the laser power to obtain the cutting speed.

10. The laser cutting device for chassis shell production according to claim 1, characterized in that: The data processing unit also includes a quality monitoring unit and a display interaction unit; The quality monitoring unit is used to monitor the quality of laser cutting based on sensor data and real-time images during the cutting process, and to evaluate the roughness of the cutting by calculating the gray gradient of the cutting edge pixel points in the real-time image using an edge detection algorithm based on image grayscale changes; Then monitor the deviation between the actual cutting position and the cutting path; The roughness and the deviation degree are weighted to obtain the quality value of the chassis shell; the quality value is compared with the preset defective threshold value. If the quality value is greater than the defective threshold value, the chassis shell is marked as defective and the number of defectives is increased by one; conversely, if the quality value is less than the defective threshold value, it means that the chassis shell is qualified, and the number of qualified products is increased by one; the number of defective products and the number of qualified products are summed to obtain the current production quantity; Divide the number of defective products by the current production quantity to get the defective rate; divide the number of qualified products by the current production quantity to get the qualified rate; Identify the total processing quantity from the production task, and mark the ratio of the current production quantity to the total processing quantity as the production progress; The roughness, deviation degree, quality value of any chassis shell in the production task and the current production quantity, defective rate, qualified number, qualified rate and production progress are marked as quality monitoring results; the display interaction unit displays the order information, control information and quality monitoring results of the current production task in an intuitive interface.

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