A laser welding device for automobile parts production

Abstract

The present invention discloses a laser welding device for automobile parts production, including a welding machine base, a multi-axis joint mechanism, a support base and a navigation system. A welding mechanical arm and a reduction servo are provided on the surface of the welding machine base, and a laser welding head is provided at the execution end of the welding mechanical arm for welding; the output end of the reduction servo is connected to the bottom surface of the deflection support base through a ball head coupling to drive the deflection support base to realize deflection movement. The bottom end of the multi-axis joint mechanism is fixedly connected to the welding machine base. The present invention realizes multi-axis motion tilting through a multi-axis joint mechanism, and realizes deflection motion through a reduction servo, and dynamically adjusts the welding path in combination with the navigation system to ensure that the welding head runs along the optimal path; through the linkage of the vibration sensor and the control system, the vibration in the multi-axis motion is effectively suppressed, and the welding accuracy is improved. The present invention has the characteristics of high degree of freedom, high precision and high reliability, and is suitable for the welding production of automobile parts with complex shapes.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, in particular to a laser welding device used for the production of automobile parts. Background Art

[0002] In the welding process of automobile parts production, welding positioners are key equipment for adjusting the posture of parts and optimizing welding paths. Traditional welding positioners usually adopt a dual-axis motion method to achieve spatial positioning of parts through a combination of a rotating axis and a tilting axis. This structure is relatively simple and can meet the welding requirements of some parts, but due to the limitation of the freedom of movement, it has certain limitations when facing complex welding paths and multi-angle welding scenarios.

[0003] However, with the diversification of the shapes of automotive parts and the improvement of welding precision requirements, traditional dual-axis welding positioners have gradually exposed the following defects:

[0004] Traditional dual-axis welding positioners require more manual intervention to complete complex welding tasks, such as frequent adjustment of the posture or repositioning of parts. This method not only increases the difficulty of operation, but also prolongs the welding cycle, and cannot meet the high requirements of modern production lines for welding efficiency.

[0005] When executing complex welding paths, the traditional dual-axis motion structure is limited by the freedom of motion, making it difficult to achieve precise control of the welding joint and prone to welding deviations. At the same time, due to the lack of dynamic monitoring and real-time adjustment of the welding path, welding accuracy is difficult to guarantee, especially in the presence of interference conditions such as smoke and high temperature, the path tracking performance is significantly reduced.

[0006] The dual-axis motion structure is difficult to meet the needs of all-round and multi-angle adjustment of parts in complex welding scenarios. When the welding path is complex or the geometric shape of the parts is special, the dual-axis positioner cannot achieve flexible deflection, resulting in operational limitations.

[0007] In summary, the dual-axis motion mode of the traditional welding positioner can no longer meet the needs of high precision, high efficiency, and adaptability to complex paths in the production of modern automotive parts. Therefore, there is an urgent need for a welding device with multi-degree-of-freedom motion, combined with advanced navigation systems and vibration control technology, to make up for the shortcomings of existing technologies. Summary of the invention

[0008] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0009] To this end, the technical solution adopted by the present invention is: a laser welding device for automobile parts production, including a welding machine base, a multi-axis joint mechanism, a support base and a navigation system. The device realizes the compound movement of multi-axis movement and angle deflection of automobile parts on the tooling through the coordinated control of the multi-axis joint mechanism and the reduction steering gear, and realizes high-precision welding by combining the dynamic adjustment of the welding path by the navigation system.

[0010] The surface of the welding machine base is provided with a welding robot arm and a reduction servo gear. The execution end of the welding robot arm is provided with a laser welding head for completing the welding task; the output end of the reduction servo gear is connected to the bottom surface of the deflection support platform through a ball head coupling, which is used to drive the deflection support platform to realize deflection movement.

[0011] The bottom end of the multi-axis joint mechanism is fixed to the surface of the welding machine base, and its output end is connected to the bottom surface of the supporting base, so as to drive the supporting base to realize multi-axis tilting movement; the multi-axis joint mechanism includes a servo actuator, a connecting rod and a floating platform, and a servo controller fixed to the surface of the fixed base. The number of the servo actuators is several and they are evenly distributed on the surface of the fixed base. The output end of the servo actuator is fixedly connected to a connecting arm, and the two ends of the connecting rod are movably connected to the connecting arm and the surface of the floating platform respectively. The floating platform is fixed to the bottom surface of the supporting base, wherein the servo actuators are evenly arranged on the surface of the fixed base. The connecting rod connects the servo actuator and the floating platform, and is arranged in multiple groups of V shapes. The initial length of the connecting rod is adjustable.

[0012] A deflection support is rotatably mounted on the top surface of the support seat, and a fixture assembly is provided on the top surface of the deflection support for fixing the parts to be welded; the fixture assembly adopts a mold structure similar in shape to the parts, and is provided with a clamping device for fixing the parts.

[0013] The navigation system includes a millimeter-wave radar module, a visual navigation system and an intelligent control module, wherein the millimeter-wave radar module and the visual navigation system are fixedly installed on the surface of the laser welding head, and their output ends are electrically connected to the intelligent control module; the navigation system is used for real-time monitoring of component positions and welding paths, welding trajectory planning and dynamic adjustment.

[0014] The millimeter wave radar module and the visual navigation system are respectively a millimeter wave radar sensor and an industrial camera.

[0015] A vibration sensor is provided on the bottom surface of the pedestal seat, and the vibration sensor is electrically connected to the input end of the servo controller for real-time collection of vibration signals during multi-axis motion, and feedback to the control system through a signal processing unit, so as to dynamically adjust the motion trajectory of the servo actuator and suppress the influence of vibration on the welding accuracy of the laser welding head.

[0016] The multi-axis joint mechanism realizes the movement of the connecting rod through the drive of the servo steering engine, and drives the bearing seat through the floating platform to complete the multi-axis tilt adjustment. The multiple groups of V-shaped arrangement of the servo steering engine and the connecting rod ensure the stability and accuracy of the multi-degree-of-freedom movement.

[0017] The reduction servo is connected to the bottom surface of the deflection support through a ball joint coupling to drive the deflection support to adjust the angle deflection; by combining the tilting movement of the support seat with the deflection adjustment of the deflection support, the compound movement of the tooling parts posture is further realized to meet the requirements of complex welding paths.

[0018] The navigation system utilizes the multi-sensor fusion technology of the millimeter-wave radar module and the visual navigation system. The millimeter-wave radar module adopts FMCW or MIMO technology to perform real-time monitoring and three-dimensional modeling of the welding path and component positions; the intelligent control module generates dynamic compensation instructions based on the monitoring results, adjusts the motion trajectory of the multi-axis joint mechanism and the reduction servo, and ensures that the laser welding head always runs along the optimal welding path.

[0019] The vibration sensor collects vibration signals in multi-axis motion in real time, analyzes the vibration amplitude and frequency through the signal processing module, and the control system adjusts the motion trajectory of the servo actuator according to the vibration characteristics, reducing the impact of vibration on the welding path and further improving welding accuracy.

[0020] The invention realizes high-degree-of-freedom compound motion of the parts to be welded through the coordinated action of the multi-axis joint mechanism and the reduction steering gear; the navigation system combines the multi-sensor fusion technology to realize the dynamic adjustment of the welding path; the linkage of the vibration sensor and the control system significantly improves the stability and accuracy of the welding process. The device is efficient, accurate and reliable, and is suitable for high-precision welding of parts with complex shapes.

[0021] The beneficial effects achieved by the present invention are:

[0022] 1. In the present invention, through the dynamic path adjustment of the navigation system and the efficient motion control of the multi-axis joint mechanism, the device realizes a high degree of automation of the welding task, reduces manual intervention, and greatly improves the welding efficiency and production capacity.

[0023] 2. In the present invention, the navigation system combines the millimeter-wave radar module, the visual navigation system and the intelligent control module to ensure that the welding head runs along the optimal path, thereby improving the welding accuracy and welding quality. A vibration sensor is set on the bottom surface of the pedestal to collect vibration data in real time and analyze it through the signal processing unit, and feedback is used to dynamically adjust the motion trajectory of the servo actuator to effectively suppress the adverse vibration caused by multi-axis motion. The multi-sensor redundant design of the millimeter-wave radar module and the visual navigation system is adopted to ensure the precise tracking and dynamic adjustment of the welding path under environmental interference (such as smoke, high temperature, electric arc, etc.), thereby improving the applicability and reliability of the device.

[0024] 3. In the present invention, the multi-axis joint mechanism adopts multiple groups of V-shaped arrangements of servo steering gears and connecting rods, combined with the floating platform and the bearing seat, to achieve multi-degree-of-freedom deflection movement. With the reduction steering gear and the ball coupling, the deflection bearing can flexibly adjust the deflection angle to meet the needs of complex welding paths. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0026] Figure 2 It is a schematic structural diagram of a welding machine base, a multi-axis joint mechanism and a support base according to an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the structure of a multi-axis joint mechanism according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the mounting structure of a support seat and a reduction steering gear according to an embodiment of the present invention;

[0029] Figure 5 A schematic diagram of a multi-axis joint mechanism and a bearing base structure according to an embodiment of the present invention;

[0030] Figure 6 The figure is a schematic diagram of the connection structure between a servo steering engine and a floating platform according to an embodiment of the present invention.

[0031] Reference numerals:

[0032] 100, welding machine base; 110, welding robot arm; 120, laser welding machine head; 130, speed reduction servo;

[0033] 200, multi-axis joint mechanism; 210, fixed seat; 211, servo controller; 220, servo steering gear; 221, connecting arm; 230, connecting rod; 240, floating platform;

[0034] 300, bearing base; 310, deflection bearing base; 320, ball coupling; 330, fixture assembly. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0036] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0037] A laser welding device for automobile parts production provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0038] Combination Figure 1-Figure 6 As shown, the present invention provides a laser welding device for automobile parts production.

[0039] The present invention provides a laser welding device for automobile parts production, comprising a welding machine base 100, a multi-axis joint mechanism 200, a support base 300, and a navigation system for controlling the multi-axis joint mechanism 200 and the support base 300.

[0040] The surface of the welding machine base 100 is provided with a welding mechanical arm 110 and a deceleration steering gear 130. The execution end of the welding mechanical arm 110 is fixed with a laser welding head 120 for completing the welding task. The output end of the deceleration steering gear 130 is connected to the bottom surface of the deflection support 310 through a ball coupling 320, and is used to drive the deflection support 310 to realize deflection movement.

[0041] The bottom end of the multi-axis joint mechanism 200 is fixedly mounted on the surface of the welding machine base 100, and the output end is connected to the bottom surface of the support base 300, which is used to drive the support base 300 to achieve multi-axis movement and tilt adjustment; the multi-axis joint mechanism 200 includes a servo steering engine 220, a connecting rod 230 and a floating platform 240, and a servo controller 211 fixed on the surface of the fixed base 210. The number of servo steering engines 220 is several and evenly distributed on the surface of the fixed base 210. The output end of the servo steering engine 220 is fixedly connected to a connecting arm 221. 1, the two ends of the connecting rod 230 are movably connected with the surface of the connecting arm 221 and the floating platform 240 respectively, and the floating platform 240 is fixed to the bottom surface of the support base 300; the servo steering motors 220 are evenly arranged on the surface of the fixed base 210, and the connecting rod 230 connects the servo steering motors 220 and the floating platform 240 and is arranged in a V shape, and the initial length of the connecting rod 230 is adjustable; the floating platform 240 is fixed to the bottom surface of the support base 300, and can complete the multi-degree-of-freedom tilt adjustment of the support base 300 under the drive of multiple servo steering motors 220.

[0042] The top surface of the support seat 300 is rotatably mounted with a deflection support 310, and the top surface of the deflection support 310 is provided with a fixture assembly 330 for tooling positioning of the automobile parts to be welded; the bottom surface of the deflection support 310 is connected to the reduction steering gear 130 through a ball head coupling 320 to achieve deflection angle adjustment. The fixture assembly 330 adopts a mold support structure similar in shape to the automobile parts to be welded, and a plurality of clamping devices are provided on the surface of the mold to accurately fix the automobile parts on the surface of the mold support structure by pressing down.

[0043] The navigation system includes a millimeter-wave radar module, a visual navigation system and an intelligent control module. The millimeter-wave radar module and the visual navigation system are both fixed to the surface of the laser welding head 120. The navigation system is used to monitor and track the welding path and generate dynamic adjustment instructions; preferably, the millimeter-wave radar module and the visual navigation system are a millimeter-wave radar sensor and an industrial camera, respectively.

[0044] Specifically, the navigation system integrates a millimeter-wave radar module, a visual navigation system and an intelligent control module. The millimeter-wave radar module adopts FMCW or MIMO technology, FMCW is frequency modulated continuous wave, and MIMO is a multiple-input multiple-output system, to form a multi-sensor fusion intelligent welding path navigation system, which can achieve sub-millimeter precision welding path modeling and component position detection; the visual navigation system and the millimeter-wave radar together form a redundant detection mechanism, which can dynamically adjust the welding trajectory when the welding path is disturbed by the environment or the component position is offset.

[0045] Among them, the millimeter-wave radar module adopts advanced phased array technology, which can build high-precision three-dimensional models of welding paths and automotive parts in real time, realize 360° all-round spatial monitoring, and maintain stable detection accuracy in complex welding environments such as smoke, high temperature, and arc interference; the visual navigation system combines high-precision industrial cameras with multi-spectral sensing modules, and uses AI image processing algorithms to conduct deep learning and real-time recognition of the characteristics of the welding path, effectively supplementing the geometric model accuracy of the millimeter-wave radar, and realizing dynamic optimization of welding path details; the intelligent control module adopts an adaptive multimodal fusion algorithm, which uses extended Kalman filtering or particle filtering to fuse millimeter-wave radar and visual navigation data in real time, and dynamically generates compensation instructions for multi-axis motion, thereby accurately controlling the spatial posture adjustment of the multi-axis joint mechanism 200 and the pedestal seat 300, ensuring that the welding head always maintains high-precision welding path following capabilities under complex motion trajectories.

[0046] In this embodiment, a vibration sensor is provided on the bottom surface of the support base 300, and the vibration sensor is electrically connected to the input end of the servo controller 211. The vibration sensor is used to collect the vibration signal generated by the support base 300 during the multi-axis motion process. The signal processing unit filters and analyzes the amplitude of the vibration signal. The control interface adjusts the motion trajectory of the servo actuator 220 according to the output result of the signal processing unit, thereby reducing the influence of adverse vibration on the welding robot arm 110 and the laser welding head 120 on the surface of the welding parts through feedback control.

[0047] Specifically, during the welding task, when the multi-axis joint mechanism 200 drives the support seat 300 to adjust the tilt, a sudden change in the action of the servo steering engine 220 may cause a slight vibration of the support seat.

[0048] The vibration sensor collects these vibration signals in real time, including the amplitude, frequency and direction of the vibration. The collected signals are transmitted to the signal processing unit of the navigation system through a high-speed data transmission interface. The signal processing unit in the navigation system filters the vibration signals, removes irrelevant interference such as environmental noise or high-frequency micro-vibrations, and extracts key characteristic parameters: vibration amplitude, vibration frequency and vibration direction. If the vibration amplitude exceeds the preset threshold, the signal processing unit will identify the potential impact of the vibration on welding accuracy;

[0049] The signal processing unit transmits the vibration characteristic information to the control system, and the control system generates compensation instructions according to the vibration data. The control system adjusts the multi-axis motion trajectory in real time through the servo steering engine 220, thereby eliminating the influence of vibration on the welding path:

[0050] Adjust the servo motor's movement speed: If the vibration mainly comes from the servo motor's rapid movement, the control system will reduce the servo motor's speed to reduce the occurrence of vibration.

[0051] Distribute motion amplitude: In multi-axis joint motion, the control system can coordinate the synchronization of the multi-axis joint mechanism by adjusting the motion amplitude and time interval of each servo actuator, thereby balancing the motion of the entire system.

[0052] The vibration sensor is arranged at the bottom surface of the support base 300, so that it can collect the vibration signal generated in the multi-axis motion process in real time, and adjust the action of the servo steering gear through signal processing and feedback, so as to dynamically suppress the influence of vibration on the welding path and welding accuracy. The present invention realizes the high-precision and stable operation of the welding head in a complex motion environment through the application of vibration control technology, and significantly improves the welding quality and reliability of the device.

[0053] The working principle and use process of the present invention:

[0054] The present invention relates to a laser welding device for automobile parts production, which realizes precise positioning of parts, high-precision multi-axis motion control and dynamic welding path adjustment during welding through a multi-axis joint mechanism, a support base and an intelligent navigation system. Its working principle is as follows:

[0055] 1. Precise positioning and fixing of parts: The automobile parts to be welded are precisely positioned by the jig assembly 330. The jig assembly 330 uses a mold support structure similar in shape to the parts to be welded, and fixes the parts to the mold support surface through a number of clamps on the mold surface to ensure the stability of the parts position during the welding process.

[0056] 2. Multi-axis motion and support adjustment: The top surface of the support seat 300 is rotatably mounted with a deflection support 310, and its bottom surface is connected to the reduction steering gear 130 through a ball coupling 320. The reduction steering gear 130 drives the deflection support 310 to perform multi-axis motions such as tilting and rotating to meet the complex welding angle requirements during welding. At the same time, the multi-axis joint mechanism 200 realizes the overall multi-degree-of-freedom deflection motion of the support seat 300 through a V-shaped arrangement of a number of servo steering gears 220 servo steering gears and connecting rods 230 connecting rods to adjust the spatial position and posture of the welding platform.

[0057] 3. Welding path monitoring and dynamic adjustment

[0058] The navigation system combines millimeter-wave radar modules, visual navigation systems and intelligent control modules to form a multi-sensor fusion intelligent welding path navigation system: the millimeter-wave radar module uses FMCW or MIMO technology to build a three-dimensional model of the welding path and parts in real time, and realize 360° all-round monitoring, maintaining stable accuracy in complex environments such as smoke, high temperature and arc interference.

[0059] The visual navigation system uses high-precision industrial cameras and multi-spectral sensing modules to capture welding path characteristics in real time, and supplements and corrects the monitoring results of the millimeter-wave radar with geometric models.

[0060] The intelligent control module integrates the millimeter-wave radar and visual navigation data, dynamically generates multi-axis motion compensation instructions, and accurately controls the motion trajectory of the multi-axis joint mechanism 200 and the pedestal seat 300, ensuring that the laser welding head 120 always operates along the correct welding path.

[0061] 4. Vibration reduction and error compensation: The vibration sensor installed on the bottom surface of the pedestal 300 collects the vibration signal generated during the multi-axis motion in real time, and analyzes the vibration amplitude through the signal processing unit. The intelligent control module dynamically adjusts the motion trajectory of the servo actuator 220 according to the processing results to suppress the influence of bad vibration on welding accuracy, thereby ensuring that the welding error generated on the surface of the parts during laser welding is minimized.

[0062] Usage Process

[0063] Equipment startup and initialization: Start the welding device, and the navigation system and intelligent control module enter the standby state. Check and ensure that all motion mechanisms such as the multi-axis joint mechanism, the support base, etc. and various components of the welding machine base 100 are operating normally.

[0064] Parts installation and positioning: The automotive parts to be welded are placed on the jig assembly 330. The jig assembly accurately fixes the parts through the clamping device of the mold support structure to ensure that the parts will not shift during the welding process.

[0065] Navigation system path scanning and welding preparation: The millimeter wave radar module begins to scan the surface of the parts and build a three-dimensional model of the welding path. The visual navigation system captures the detailed features of the welding path and integrates it with the millimeter wave radar data to generate a high-precision welding path. The navigation system sends the path data to the intelligent control module to generate motion instructions for the welding path.

[0066] The multi-axis joint mechanism 200 and the support base 300 are adjusted in real time according to the dynamic instructions of the intelligent control module. The deceleration steering engine 130 drives the deflection support base 310 to achieve free deflection movement in the axial direction to meet the requirements of the welding angle. The laser welding head 120 performs high-precision laser welding along the welding point according to the path planned by the navigation system.

[0067] Vibration monitoring and error control: During multi-axis motion and welding, the vibration sensor monitors the vibration status in real time. The signal processing unit analyzes the vibration amplitude and dynamically adjusts the motion trajectory of the servo actuator 220 through the intelligent control module to suppress the impact of adverse vibration on welding accuracy.

[0068] Welding completion and reset: After the welding path is completed, the device automatically stops operating. The navigation system monitors the welding results and generates a welding quality report. The multi-axis joint mechanism 200 and the support base 300 automatically reset to the initial state, and the parts are removed from the fixture assembly 330.

[0069] Through the above working principles and processes, the present invention can effectively improve the welding accuracy, automation level and work efficiency in the production of automotive parts, and is suitable for high-precision laser welding scenarios of parts with multiple specifications.

[0070] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A laser welding device for automobile parts production, characterized in that: The invention comprises a welding machine base (100), a multi-axis joint mechanism (200), a support base (300), and a navigation system for controlling the multi-axis joint mechanism (200) and the support base (300); the characteristics are: A welding mechanical arm (110) and a reduction steering gear (130) are provided on the surface of the welding machine base (100); a laser welding machine head (120) is provided at the execution end of the welding mechanical arm (110) for laser welding; A deflection support (310) is rotatably mounted on the top surface of the support seat (300); the output end of the reduction steering gear (130) is connected to a ball coupling (320), and the other end of the ball coupling (320) is connected to the bottom surface of the deflection support (310) for driving the deflection support (310) to rotate on the surface of the support seat (300); a fixture assembly (330) for tooling positioning automobile parts is provided on the top surface of the deflection support (310); The bottom end of the multi-axis joint mechanism (200) is connected to the surface of the welding machine base (100); the output end of the multi-axis joint mechanism (200) is connected to the bottom surface of the support base (300) and is used to drive the support base (300) to perform multi-axis deflection movement; the multi-axis joint mechanism (200) comprises a servo steering engine (220), a connecting rod (230), a floating platform (240), and a servo controller (211) fixed to the surface of the fixed base (210); the number of the servo steering engines (220) is several and evenly distributed on the surface of the fixed base (210); the output end of the servo steering engine (220) is fixedly connected to a connecting arm (221); the two ends of the connecting rod (230) are respectively movably connected to the connecting arm (221) and the surface of the floating platform (240); and the floating platform (240) is fixed to the bottom surface of the support base (300); The navigation system comprises an intelligent control module, a millimeter wave radar module fixed to the surface of the laser welding head (120), and a visual navigation system. The output end of the navigation system is electrically connected to the input end of the servo controller (211) for real-time position monitoring of automobile parts, welding path tracking, and dynamic adjustment during the welding process.

2. A laser welding device for automobile parts production according to claim 1, characterized in that: The millimeter wave radar module realizes 360° real-time monitoring of welding paths and automobile parts through phased array technology; the visual navigation system is used to capture welding path characteristics in real time and to accurately supplement and correct the monitoring results of the millimeter wave radar; the intelligent control module is used to fuse the detection data of the millimeter wave radar and the visual navigation system, generate dynamic compensation instructions for multi-axis motion, and control the motion trajectory of the multi-axis joint mechanism (200) and the pedestal seat (300).

3. The laser welding device for automobile parts production according to claim 1 is characterized in that: The number of the connecting rods (230) is plural and the connecting rods (230) are evenly divided into multiple groups in pairs. The connecting rods (230) in each group are arranged in a V shape. The initial length of the connecting rods (230) is adjustable.

4. The laser welding device for automobile parts production according to claim 1, characterized in that: The jig assembly (330) adopts a mold support structure with a shape similar to the automobile part to be welded, and a plurality of pressing clamps are provided on the surface of the mold to fix the automobile part on the surface of the mold support structure by pressing down to achieve precise positioning.

5. The laser welding device for automobile parts production according to claim 1, characterized in that: The deceleration steering gear (130) is a high-precision deceleration steering gear, and its output end realizes the tilting and rotating movement of the deflection support platform (310) through the ball head coupling (320) to meet the requirements of complex welding angles.

6. The laser welding device for automobile parts production according to claim 1, characterized in that: The millimeter wave radar module and the visual navigation system are respectively a millimeter wave radar sensor and an industrial camera.

7. The laser welding device for automobile parts production according to claim 1, characterized in that: A vibration sensor is provided on the bottom surface of the support base (300), the vibration sensor being electrically connected to an input end of a servo controller (211), the vibration sensor being used to collect vibration signals generated by the support base (300) during multi-axis motion, the signal processing unit filtering and amplitude analysis of the vibration signals, and the control interface adjusting the motion trajectory of the servo steering engine (220) according to an output result of the signal processing unit, thereby reducing the influence of adverse vibrations on the welding robot arm (110) and the laser welding head (120) on the surface of the welded parts through feedback control.

8. The laser welding device for automobile parts production according to claim 1, characterized in that: The millimeter-wave radar module adopts FMCW or MIMO technology to achieve sub-millimeter precision welding path modeling and component position detection; the visual navigation system and millimeter-wave radar together form a redundant detection mechanism, which can dynamically adjust the welding trajectory when the welding path is disturbed by the environment or the component position is offset.

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