33 results about "Fiber laser welding" patented technology

The invention belongs to the technical field of optical fiber laser welding, and particularly relates to optical fiber laser welding equipment which comprises a rack, a conveying mechanism used for conveying a battery module is arranged in the rack, an XYZ-axis moving mechanism is installed on one side of the rack, a laser welding device is installed on the XYZ-axis moving mechanism, and a conveying belt is connected to one side of the end of the rack. The conveying mechanism comprises two sets of transmission shafts, the two sets of transmission shafts are rotationally installed in the rack, chain wheels are installed on the two sets of transmission shafts, the two sets of chain wheels are meshed with a chain, a plurality of sets of shifting forks used for containing battery modules are arranged around the chain, and one ends of the shifting forks are fixedly connected with the chain. According to the battery module welding device, feeding, welding and discharging of the battery module can be conducted at the same time, the automation rate of the device is increased, meanwhile, the battery module can be continuously welded, and the welding efficiency of the battery module is improved.

The invention relates to the technical field of spring production processes, and discloses a corrugated spring manufacturing process which comprises the following steps: S1, taking a steel wire rod main body with a rectangular section, winding into a corrugated circular ring, and cutting off at a position where the steel wire rod main body is wound for one circle; s2, laser welding is conducted on the cut-off position through optical fiber laser welding equipment, and a blank piece is obtained; s3, the blank is subjected to heat treatment to eliminate internal stress, and a semi-finished product is obtained; s4, the semi-finished product is subjected to surface treatment, and a finished product is obtained.The corrugated ring is directly formed, the corrugated treatment process is omitted while a flat ring is rolled, only stress heat treatment needs to be conducted on the product obtained after wave pressing forming, and the machining time and the production cost are saved; according to the process, the welding seam strength is optimized by optimizing laser welding conditions, oxidation and decarburization of workpieces are reduced by controlling the heat treatment heat preservation time after welding, meanwhile, the deformation stress of the spring is thoroughly eliminated, and the fatigue life and the use performance of the spring are more unified and stable.

The invention relates to the technical field of laser application, and particularly discloses an online pre-welding treatment and post-welding modification lath laser device which comprises a laser system, a power supply system, a cooling system, a shaping focusing system, a semi-reflecting mirror, a total reflecting mirror, a shielding gas system, a visual sensing system, a welding working platform system and a control system. Continuous laser is generated through the arranged optical fiber laser welding equipment for welding operation, a pulse laser beam generated by the pulse laser is divided into two beams through the semi-reflecting mirror, one beam can be used for removing an oxide layer on the surface of a welding sample on line before welding and exerting prestress on the surface at the same time, air holes are prevented from being generated during welding, cracks are reduced, and the welding quality is improved. And the other beam can be used for carrying out surface cleaning after welding and carrying out laser strengthening modification on a welding seam, so that the quality of the welding seam is improved, and the welding strength is improved.

The invention relates to the technical field of hybrid welding, in particular to a laser and TIG magnetic control hybrid welding process for a nickel-based alloy pipe production line, which comprises the following steps: pipe manufacturing, preparation, conveying and preheating, welding and cooling, equipment comprises a dust-free welding chamber and a welding pipe, a welding mechanism is arranged in the dust-free welding chamber, and the welding pipe is arranged in the dust-free welding chamber. The welding mechanism comprises a high-frequency pulse TIG welding gun and a laser transmitter, a magnetic field mechanism is arranged in the high-frequency pulse TIG welding gun, and a tungsten electrode end is arranged at the end, away from the adjusting frame, of the high-frequency pulse TIG welding gun. The method has the advantages that optical fiber laser welding is combined with the high-frequency pulse TIG arc and external alternating magnetic field technology, the welding speed is remarkably increased, rapid heating is achieved through optical fiber laser welding, the stirring and mixing effects of a molten pool are enhanced through adding of the high-frequency pulse TIG arc and the alternating magnetic field, the alternating magnetic field stirs the interior of the molten pool, grains are refined, and the overall performance of a welding seam is improved; therefore, thermal stress and deformation of weld metal are reduced, and welding efficiency and quality are improved.

The utility model relates to the technical field of welding systems, in particular to a synchronous plug-in type ultrasonic-assisted laser welding system which is arranged on a guide rail group and comprises a laser welding part and a welding head connecting part, the laser welding part is connected with the guide rail group through the welding head connecting part, and the welding head connecting part is connected with the laser welding part. The laser welding part is used for emitting laser and welding a welding part; through the acoustic streaming effect and the cavitation effect of ultrasonic waves generated by the ultrasonic generation part, the fluidity of a molten pool is improved, the grain structure is refined, the quality and stability of a welding joint are improved, the joint strength and the welding seam quality of metal material laser welding are improved, and a laser welding head and an ultrasonic variable-amplitude needle head are rotated to proper angles to adapt to welding seams of different shapes; ultrasonic welding and laser welding are effectively combined, a welding part is welded, the quality and stability of a welding joint are guaranteed, and the adaptability of the welding system is improved.

The utility model relates to rail transit welding equipment technical field, concretely relates to a rail transit is used for door handle laser automatic welding and detection system. The utility model discloses that the mechanical arm I end is provided with workpiece pickup, is used for grabbing the handle workpiece of having been fixed, and it is removed to the welding area, the mechanical arm II end is provided with the tracking welding mechanism, is used for the handle workpiece of removing to the welding area to track and weld, the tooling platform sets up in the mechanical arm I one side, is provided with the handle tooling on it, and the handle tooling has placed the handle workpiece of waiting to weld, and the material frame sets up in the mechanical arm I one side, is used for depositing the finished handle workpiece after welding. The utility model is accurate to remove through workpiece pickup and is accurate to remove through workpiece pickup, and the high resolution laser sensor of tracking welding mechanism obtains accurate weld data, cooperates 1500W fiber laser welding machine, realizes fast high quality welding, and the protection gas closed loop control optimizes the welding environment, and the welding and detection quality are improved.

The application provides a thick plate narrow gap annular light spot optical fiber laser powder filling welding method and system; the method comprises the following steps: groove shape design and pre-welding treatment; providing a laser welding system; providing an alternating magnetic field system; providing a weld contour detection system; using an annular light spot optical fiber laser beam to complete laser self-melting backing welding; turning on the weld contour detection system, the alternating magnetic field system and the laser welding system to perform powder filling welding; the application uses annular light spot optical fiber laser powder filling welding, improves the problems of serious evaporation and burning loss of powder elements, poor interlayer and sidewall fusion in traditional narrow gap laser powder filling welding; at the same time, the welding process is assisted by using the alternating magnetic field and the weld contour real-time detection method, the severe evaporation of the metal powder is avoided, the utilization rate of the metal powder material is improved, a full forming weld is obtained, and the weld collapse problem is effectively solved.

The present invention discloses a laser-welded compressor housing, comprising a lower housing (2) and an upper cover (1) matched therewith. The cross section of the upper cover (1) and the lower housing (2) at the connection is elliptical in shape. The upper cover (1) and the lower housing (2) are matched with a stopper. The maximum gap of the stopper is 0.5 mm. The present invention also discloses a laser welding method for the compressor housing. By adopting the above technical solution, continuous laser welding is achieved, with high welding efficiency and welding strength stronger than that of the parent material cold-rolled steel or hot-rolled steel. The welded joint has high strength and a neat and beautiful appearance. Fiber laser welding relies on the melting of the housing plate itself to form a molten pool connection, eliminating the need for welding wire and having a small thermal deformation area. Therefore, the damage of laser heat conduction to the pump body enclosed in the housing is greatly reduced, the product cost is reduced, and the product appearance quality and reliability are improved.

Certain embodiments disclosed herein provide systems and methods for coupling an optical fiber to a ferrule. For example, certain aspects provide a method for coupling an optical fiber to a ferrule including inserting the optical fiber through a ferrule such that an end of the optical fiber protrudes beyond an end of the ferrule and applying a laser beam to the end of the optical fiber, wherein the laser beam melts a portion of the optical fiber. The method further includes securing, through cooling of the melted portion of the optical fiber, the optical fiber to the ferrule, wherein the laser beam melts a portion of the optical fiber to create a fluid which seals the optical fiber to the ferrule upon solidifying.

The utility model discloses an inner cavity frequency doubling blue light fiber laser welding device based on a fiber bragg grating, and relates to the technical field of fiber lasers. The semiconductor pump light source is connected to the input end of the optical fiber wavelength division multiplexer, the output end of the optical fiber wavelength division multiplexer is sequentially connected with the ytterbium-doped optical fiber, the frequency doubling crystal and the end face reflector, and the optical fiber bragg grating is obtained by adopting a purple light mask method in an inscribing mode, connected to the other input end of the wavelength division multiplexer and then sequentially connected with the dichroscope, the collimator and the welding head. Under excitation of pump light, ions in the ytterbium-doped optical fiber generate stimulated radiation, laser oscillates in a resonant cavity formed by the fiber Bragg grating and the end face reflector, 490 nm blue light is generated through the frequency doubling crystal, the blue light is transmitted through the two-phase color mirror, 980 nm light is reflected through the two-phase color mirror, and finally the laser is output through the welding head. The fiber bragg grating is high in inscribing resolution, high in stability, high in production efficiency, high in inner cavity frequency doubling electro-optical conversion efficiency, high in quality of output blue light beams, compact in structure and suitable for welding of high-reflectivity materials.

The utility model belongs to the technical field of welding equipment, and particularly relates to a positioning device of an optical fiber laser welding machine, which comprises a working table and supporting legs, the supporting legs are fixedly arranged on the periphery of the bottom of the working table, a welding device is arranged at the top of the working table, and the welding device comprises a positioning unit, a clamping unit and a welding unit. According to the positioning device of the optical fiber laser welding machine, the positioning unit is arranged, a handle is rotated to drive a threaded rod to be matched with a moving plate, so that the moving plate moves left and right along a guide rod, a positioning rod is driven to move in the moving process of the moving plate, and when the positioning rod is matched with a positioning hole formed in the positioning plate, rotation of the handle is stopped; the movable plate is positioned while moving, the positioning mode is simple, operation is convenient, and the problems that in the background technology, in the using process, the positioning mode is complex, and the welding efficiency is affected are solved.

This invention discloses a method for manufacturing reinforced platinum alloy workpieces with enhanced weldability, belonging to the field of metallic materials technology. The method includes: vacuum melting pure platinum and additives into an alloy ingot; powdering the ingot using a plasma rotating electrode and mixing it with amorphous boron powder; obtaining a dense billet through spark plasma oxidation sintering and hot isostatic pressing; obtaining a reinforced platinum sheet through hot forging and cold rolling; processing the sheet into workpieces; and then performing fiber laser welding with simultaneous ultrasonic waves. After welding, the workpiece undergoes another hot isostatic pressing treatment. This invention significantly improves the high-temperature strength and creep resistance of platinum alloys by generating nanoscale boride and oxide dispersed phases in situ. Simultaneously, it utilizes ultrasonic waves and post-weld hot isostatic pressing to synergistically control welding defects and microstructure coarsening, enabling the room temperature and high-temperature tensile strength and elongation of the weld zone to reach over 80% of the base material's performance, far exceeding the 50%~60% of traditional welding methods, thus meeting the stringent requirements of high-end applications for consistent overall workpiece performance.

A system for optical fiber laser welding to a substrate is provided. The system includes an optical fiber having a first end, a substrate defining a surface, a coating, a laser configured to emit photon energy, one or more processors, and a memory. The memory contains computer readable code configured to, upon execution, cause the one or more processors to perform various tasks. The tasks include positioning the optical fiber relative to the substrate such that the first end of the optical fiber is positioned proximate to the surface of the substrate, with the coating positioned between the optical fiber and the substrate. The tasks also include positioning the laser relative to the optical fiber or the substrate. The tasks also include causing the laser to emit photon energy through the optical fiber or through the substrate. The emission of the photon energy through the optical fiber or through the substrate causes the optical fiber to laser weld to the substrate.

1. Name of the Design Product: Fiber Laser Welding Head. 2. Use of the Design Product: This design product is used to cooperate with a laser welding machine tool to complete the welding of metal sheets. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photo Most Indicating the Design Key Points: Perspective view.

Certain embodiments disclosed herein provide systems and methods for coupling an optical fiber to a ferrule. For example, certain aspects provide a method for coupling an optical fiber to a ferrule including inserting the optical fiber through a ferrule such that an end of the optical fiber protrudes beyond an end of the ferrule and applying a laser beam to the end of the optical fiber, wherein the laser beam melts a portion of the optical fiber. The method further includes securing, through cooling of the melted portion of the optical fiber, the optical fiber to the ferrule, wherein the laser beam melts a portion of the optical fiber to create a fluid which seals the optical fiber to the ferrule upon solidifying.

The invention provides a pump shell spot welding laser welding positioning tool and method, the tool comprises a profiling positioning body, a positioning pressing block and a pressing mechanism, the profiling positioning body is provided with a profiling positioning groove matched with the pump shell in shape, and the profiling positioning body and the positioning pressing block are matched to form a double-reference positioning structure; the pressing mechanism is a parallelogram elastic pressing device with a built-in spring, the assembly tolerance of + / -1.5 mm can be automatically compensated, and the repeated positioning precision of the tool reaches + / -0.1 mm. The profiling positioning body and the positioning pressing block are in modular design and are generally used for 114-328 series pump shells, and the model switching time is shorter than 5 minutes. The positioning method sequentially comprises the four stages of positioning, clamping, welding and discharging, the tool is matched with a 1500W optical fiber laser welding machine, and a workpiece rotating device can be selected to complete automatic ring welding. According to the method, the welding precision and efficiency are greatly improved, the skill dependence of operators is reduced, and the method has remarkable application and popularization value.

The present invention belongs to the technical field of fiber laser welding, and specifically relates to fiber laser welding equipment, comprising a frame, a conveying mechanism for conveying battery modules is arranged in the frame, an XYZ-axis moving mechanism is installed on one side of the frame, a laser welder is installed on the XYZ-axis moving mechanism, a conveyor belt is connected to one end of the frame, the conveying mechanism comprises two sets of transmission shafts, the two sets of transmission shafts are rotatably installed in the frame, sprockets are installed on the two sets of transmission shafts, the two sets of sprockets engage chains, and several sets of forks for placing battery modules are arranged around the chains, one end of the forks is fixedly connected to the chain, and by making the several sets of forks perform circular motion, the loading, welding and unloading of the battery modules can be carried out simultaneously, which not only improves the automation rate of the device, but also enables the battery modules to be continuously welded, thereby improving the welding efficiency of the battery modules.

The invention relates to the technical field of welding, and discloses automatic positioning optical fiber laser welding equipment which comprises a rack, two parallel electric guide rails are installed on one side of the top of the rack, a connecting plate is slidably connected to the outer sides of the electric guide rails through electric sliding blocks, and a chuck is fixedly connected to one end of the connecting plate; a fixing seat is fixedly connected to the outer side of the chuck, a mounting groove is formed in the fixing seat, and an annular connecting groove is formed in the inner side wall of the mounting groove. Preliminary centering guiding is achieved through the conical face, matched with the shaft part, of the conical base, meanwhile, the conical base moves to drive the second driving rack, the first driving gear and the first driving rack to be linked, the abutting plate is promoted to abut against the outer surface of the shaft part accurately, multi-directional synchronous positioning constraint is formed, radial deviation of the shaft part before welding is effectively avoided, and the welding quality is improved. And it is ensured that the central axes of the two to-be-welded shaft parts are strictly aligned.

The invention relates to a component assembly comprising a first component (10), a second component (20) and a fiber laser welded connection (2) between the first component (10) and the second component (20) in order to connect the first component with the second component over a joining gap (6), wherein the fiber laser welded connection (2) comprises at least a first weld seam (3) and a second weld seam (4), and wherein the first weld seam (3) and the second weld seam (4) are arranged directly next to each other and in contact with each other. The invention also relates to a method for producing the fiber laser welded connection.

The invention relates to a TA15 titanium alloy end frame structure product and a preparation method thereof, and belongs to the technical field of additive manufacturing. The preparation method comprises the steps that TA15 titanium alloy powder is adopted for printing, a blank is obtained after printing, and the blank structurally comprises a thin plate and an arc-shaped cavity formed in the thin plate; the length direction of the thin plate is parallel to the vertical direction in the printing process; the thin plate is bent into a cylinder with openings in the two ends, the openings are connected through optical fiber laser welding, and a semi-finished product part is manufactured; and sleeving the semi-finished product part on a mold, placing the semi-finished product part and the mold in a heat treatment furnace for heating expansion hot forming, and cooling to obtain the end frame structure product. According to the preparation method provided by the invention, the space utilization rate of additive production is increased, the number of products is doubled, tedious post-treatment procedures are omitted, the cost is greatly reduced, and the problems such as deformation existing in the selective laser melting forming technology are effectively solved.

The utility model provides a handheld automatic wire feeding optical fiber laser welding machine, which belongs to the technical field of optical fiber laser welding machines, and comprises a welding machine body and a welding gun, a welding head part of the welding gun is provided with an automatic wire feeding structure, the welding machine body is matched with the welding gun for use, and the handheld automatic wire feeding optical fiber laser welding machine further comprises a storage tray. A storage disc is arranged on the welding machine body, a winding column is arranged on the storage disc and rotationally connected to the storage disc, a limiting plate is fixed to the side wall of the top of the winding column, and a connecting wire between the welding machine body and the welding gun is wound around the winding column. The welding machine is reasonably provided with a winding and placing structure of the connecting wire, so that the connecting wire is convenient to place and wind, and the welding machine is convenient for a user to use.

The invention discloses a method for welding 6-series aluminum alloy through composite light source wire feeding, and belongs to the technical field of optical fiber lasers. The structure for the wire feeding welding method comprises a jig, an aluminum material made of 6-series aluminum alloy, a nanosecond MOPA laser, a semiconductor laser, a near-infrared laser, a laser welding swing head, a wire feeding mechanism, an air blowing device and a wire material, and the wire material and the aluminum material are heated through semiconductor laser with low energy density and large light spots. Then melting the wire material and the aluminum material by adopting high-power near-infrared laser with the core diameter of 14 microns, and realizing light spot swinging in cooperation with a laser welding swinging head so as to realize welding; the device is suitable for 6-series aluminum alloy wire feeding welding, wire filling welding can be continuously and stably completed, a keyhole formed through welding is small, the size of an air hole is small, the energy utilization rate is better than that of single-fiber laser welding, a welding seam with higher quality is formed, meanwhile, the temperature difference between the welding position and base metal is reduced, the temperature gradient is reduced, and therefore the welding stress peak value is reduced, and the welding quality is improved. And stress concentration is avoided.

The present invention relates to an intelligent high-efficiency fiber laser welding machine, comprising a workbench, wherein the upper surface of the workbench has two vertical plates at a height, and a movable component is provided at a position opposite to the two vertical plates, and a connecting plate is fixed at the lower end of the movable component, and a welding machine is fixed inside the connecting plate. The intelligent high-efficiency fiber laser welding machine can adjust the position of the welding head by having a movable component, which can effectively improve the intelligence and high efficiency of the device, and is provided with a fixing component to fix the parts, which can effectively avoid the misalignment of the welding surfaces due to shaking between the welding parts, further improving the working efficiency of the device and the accuracy of welding, and is provided with a processing component to process the smoke generated during the welding process, which can effectively prevent the workers from inhaling the smoke into the body and causing health hazards, and can enhance the practicality of the device, and is provided with a stabilizing component to facilitate enhancing the stability of the device and convenient transportation.

The utility model relates to the technical field of welding equipment, and discloses an optical fiber laser welding lathe bed which comprises a machine tool, a supporting frame is fixedly connected to the top of the machine tool, a fixing assembly is arranged on the outer wall of the supporting frame, a cleaning assembly is arranged on the top of the machine tool, and the fixing assembly comprises a plurality of rubber clamping plates. The rubber clamping plates are located on the outer wall of the supporting frame, a motor is fixedly connected to the interior of the machine tool, the output end of the motor is fixedly connected with a rotating disc, the two sides of the rotating disc are each rotationally connected with a first connecting plate, the interior of each first connecting plate is rotationally connected with a second connecting plate, and the top of each second connecting plate is fixedly connected with a fixing plate. The two sides of each fixing plate are fixedly connected with third connecting plates. According to the device, the motor drives the rubber clamping plates on the two sides to clamp a welded object, meanwhile, the rubber clamping plates rotate with the first rotating shaft as the circle center, it is guaranteed that the rubber clamping plates are comprehensively attached to the special-shaped face of the welded object, and the effect of fixing the welded object is achieved.

The present invention relates to an online detection method for laser deep fusion welding defects. During the welding process, the image of the shape contour of the small holes and through holes in the molten pool formed during welding is extracted and stored in real time by an imaging system, and based on the pre-trained relationship model between the image contour features of the small holes and through holes and the fusion welding defects, the online detection of the fiber laser welding quality is realized. The establishment of the relationship model between the image contour features of the small holes and through holes and the welding quality is based on the detection of a large amount of sample data, and the characteristic data of the small holes and through holes are trained using a hidden Markov process. The present invention also relates to a detection device applied to the above-mentioned online detection method. The present invention realizes online defect detection and quality analysis in the process of fiber laser welding, which is convenient for discovering various defects that may affect the welding quality during the welding process, and reduces the time and cost of later manual detection or X-ray detection.

The present invention relates to the field of composite welding technology, and particularly to a laser and TIG magnetic control composite welding process for a nickel-based alloy pipe production line, which comprises the following steps: pipe making, preparation, conveying and preheating, welding, and cooling. The equipment includes a dust-free welding chamber and a welding pipe. A welding mechanism is arranged inside the dust-free welding chamber. The welding mechanism includes a high-frequency pulsed TIG welding torch and a laser emitter. A magnetic field mechanism is arranged inside the high-frequency pulsed TIG welding torch. A tungsten electrode tip is arranged at one end of the high-frequency pulsed TIG welding torch away from the adjusting frame. The advantages are as follows: The fiber laser welding combines with the high-frequency pulsed TIG arc and the externally applied alternating magnetic field technology, significantly improving the welding speed. The fiber laser welding realizes rapid heating. The addition of the high-frequency pulsed TIG arc and the alternating magnetic field enhances the stirring and mixing effects of the molten pool. The alternating magnetic field stirs the inside of the molten pool, refines the grains, increases the overall performance of the weld, thereby reducing the thermal stress and deformation of the weld metal, and improving the welding efficiency and quality.

The invention discloses a high-precision welding method for an aluminum plate, which belongs to the technical field of aluminum plate welding, and specifically comprises the following steps of: 1) putting a surface to be welded of the aluminum plate into a cleaning device, and cleaning by using acid liquor; 2) putting the pickled aluminum plate in pure water at 65-80 DEG C for washing, and then controlling the water for later use; (3) the water control aluminum plate is placed on a welding device, and then the to-be-welded face of the aluminum plate is evenly coated with the weld-aid mixed agent; (4) the to-be-welded face, evenly coated with the weld-aid mixture, of the welding device is welded through continuous optical fiber laser under the protection of helium; before welding, the welding face is pretreated, impurities on the welding face are removed, metal on the welding face is activated through the weld-aid mixture, the welding uniformity and the welding strength during welding are improved, the welding position can be smoother by combining continuous fiber laser welding, and the welding precision is improved; according to the method, the problem that the welding precision and efficiency cannot meet the requirements simultaneously due to process and parameter setting differences in existing aluminum plate welding can be effectively solved.

1. Name of the design product: Handheld fiber laser welding machine. 2. Use of the design product: Applied to the welding of various metal and its alloy workpieces. 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Perspective view.

The utility model belongs to the technical field of optical fiber laser welding, and particularly relates to an optical fiber laser welding machine with a workpiece clamping function, which comprises a bottom plate and supporting rods, and the supporting rods are fixedly connected to four corners of the lower side of the bottom plate. When the optical fiber laser welding machine with the workpiece clamping function is used, a handle is pulled firstly to pull a sealing plate away from the front end of a shell, then a to-be-welded workpiece is placed on the upper side of a supporting plate, then a rotating handle is rotated to drive a second threaded rod to rotate, accordingly, a moving plate on the outer side is driven to move, and a connecting rod and a clamping plate move together; after a sealing plate is pulled to the front end of a shell, an air cylinder is started, an output shaft of the air cylinder moves to drive the supporting plate at the upper end to move, and the workpiece on the supporting plate is moved to the lower end of a welding head; and then a welding head is started to carry out laser welding on the workpiece.