29 results about "Fiber laser" patented technology

1. The name of the design product: open type coil fiber laser cutting machine. 2. The use of the design product: cutting of stainless steel coil, galvanized coil, cold-rolled coil, hot-rolled coil and other metal sheet materials. 3. The design points of the design product: the shape of design 1, the shape, color and their combination of design 2. 4. The picture or photo that best shows the design points: the perspective view of design 2. 5. The bottom surface of the design product is the part that is not easy to see or cannot be seen during use, so the top view of design 1 and the top view of design 2 are omitted. 6. Design 1 is designated as the basic design. 7. Other circumstances that need to be explained: design 2 of the design requires protection of color.

This invention relates to the field of laser welding and additive manufacturing technology, and discloses an intelligent controlled wire and powder co-feeding laser welding and additive manufacturing device and method. The device includes a housing, a fiber laser transmission component, a powder feeding mechanism, a wire feeding mechanism, a detection mechanism, and a control mechanism. The powder feeding mechanism includes an annular support plate, a main powder feeding tube, multiple secondary powder feeding tubes, a first angle adjustment component, a second angle adjustment component, and an angle coordination connection component detachably connected between the first angle adjustment component and the multiple second angle adjustment components. The wire feeding mechanism includes a wire feeding gun and a third angle adjustment component connecting it to the housing. This invention obtains the welding angle through the detection mechanism, and the control mechanism adaptively adjusts the angles of the powder feeding tube and the wire feeding gun according to different welding angles, realizing adjustment in flat welding, fillet welding, and overhead welding scenarios. Under large angle deflection, it can be adjusted to the optimal angle matching the current welding direction, overcoming the problem of uneven powder feeding caused by gravity.

This invention discloses an integrated dual-mode-locked fiber laser source for dual-comb measurements, comprising: a pump source, a wavelength division multiplexer (WDM), a rare-earth ion-doped fiber, a first optical circulator, and a second optical circulator. The pump source is coupled to the rare-earth ion-doped fiber via the WDM. The first and second optical circulators are respectively connected to the two ends of the rare-earth ion-doped fiber. The first optical circulator forms a first resonant cavity with a first group of mode-locking elements, and the second optical circulator forms a second resonant cavity with a second group of mode-locking elements. The first and second resonant cavities are optically isolated from each other by the directional transmission characteristics of the first and second optical circulators, and share the pump source and the rare-earth ion-doped fiber to synchronously output two mode-locked pulses. This invention can generate two highly coherent mode-locked pulses with independently adjustable parameters using a single pump source and a single gain medium, exhibiting high integration, good stability, and strong practicality.

The utility model relates to laser cutting technical field, concretely is a kind of high-precision anti-vibration structure of novel optical fiber laser cutting machine, it solves the problem of traditional workpiece processing disassembly and installation inconvenience, low efficiency, including base, the side of base is provided with first mounting piece, the other side of base is provided with second mounting piece, first mounting piece is hinged with first clamping block, second mounting piece is fixed with second clamping block, eccentric wheel is rotatably installed on first mounting piece, rotate eccentric wheel, the outer periphery of eccentric wheel can drive first clamping block to rotate with hinged position as axis, second mounting piece and base are slidably connected, the slide slot for the sliding of second mounting piece is set up on base, the top wire is threadedly connected on second mounting piece, a plurality of position different positioning holes for the insertion of top wire are arranged in slide slot, first mounting piece and first clamping block are hinged by pivot, eccentric wheel and first mounting piece are rotatably connected by connecting shaft, handle is arranged on eccentric wheel.

The application belongs to the technical field of laser application equipment in thermal parameters, and provides a narrow space laser heating and temperature control device and a control method thereof, which can perform high-temperature heating on the material surface inside the narrow space of a missile such as an electric antenna cover, a fairing or an instrument cabin, can complete multiple parameter test tasks in cooperation with other thermal and optical test devices, and has an excellent application prospect. By adopting a non-confocal multi-fiber laser heating technology and combining a miniaturized and integrated water-cooled sleeve pipe circular collimating mirror design, a technical problem of uniformly and efficiently heating the material surface inside the narrow space such as an antenna cover, a fairing or an instrument cabin is successfully solved.

This invention discloses a closed-loop compensation system for thermal drift of fiber optic lenses in a cutting machine, relating to the field of high-power fiber laser cutting machines. The system includes real-time acquisition of dimensional maps of the product cross-section within a preset period, combining these maps with a three-dimensional coordinate system and timestamps, and sending them to a data storage unit to form a spatiotemporal topographic feature map. It then retrieves spatiotemporal topographic feature maps from adjacent periods stored in the data storage unit, analyzes and compares them with preset customized spatiotemporal topographic feature maps to determine the spatiotemporal topographic feature results, and sends these results to a compensation processing unit. Finally, it receives the spatiotemporal topographic feature results and matches them with preset thermal drift compensation parameters to generate a decision instruction package. This decision instruction is sent to a compensation execution unit for control operation and re-verification, achieving intelligent closed-loop re-judgment compensation. Through its intelligent and closed-loop design, the system enhances the intelligence of autonomous perception and control of fiber optic lens decision-making compensation.

The application provides a kind of optical fiber laser and electrolytic multi-physics field coupling simulation modeling method, device, equipment and storage medium, it relates to laser processing and electrochemical processing composite manufacturing technical field.The method comprises: establishing axisymmetric geometric model;Construct a multi-physics field coupling model, including flow field model, gas generation model, heat transfer model, electric field model, ion diffusion model and material removal model;Set simulation parameters and boundary conditions;Solve the multi-physics field coupling model using finite element simulation software to obtain the potential, current density, temperature, conductivity, ion diffusion coefficient, gas volume fraction and flow field distribution in the processing process.The application realizes the simulation modeling of the simulation of the optical fiber laser and electrolytic composite processing process, and can be used for analyzing the material dissolution characteristics and obtaining the physical quantities difficult to measure by experimental instruments in the processing.

The application discloses a low-repetition-frequency optical fiber laser amplifier pump light time-sharing and light-splitting device. The device comprises a pump source, a fiber acousto-optic modulator, a plurality of laser systems and a control unit. The pump source is used for generating pump light; the fiber acousto-optic modulator is connected with the output end of the pump source and is used for receiving the pump light and realizing time-sharing and light-splitting; the plurality of laser systems are respectively connected with the light-splitting output ends of the fiber acousto-optic modulator to form respective light-splitting branches and are used for receiving time-sharing pump light and performing laser amplification; and the control unit is connected with the fiber acousto-optic modulator and is used for controlling the time-sharing and light-splitting operation of the fiber acousto-optic modulator according to a preset time sequence. The device structure in the technical scheme of the application is relatively simple, easy to realize and integrate, the pump light is time-shared and light-split by the acousto-optic modulator, the ASE during the fiber laser amplification can be obviously inhibited, the beam quality and power stability of the laser output are improved, and the reasonable distribution and efficient utilization of the pump light in the plurality of laser systems can be realized.

The utility model discloses a kind of smoke treatment devices for fiber laser cutting machine, it includes fiber laser cutting machine cover shell: the top fixed mounting of fiber laser cutting machine cover shell has rectangular box, the left side fixed connection of rectangular box has fan, filter cartridge is fixedly installed between the fan and rectangular box, the turbulence plate is jointly communicated with fiber laser cutting machine cover shell between connection pipe, the air outlet end of fan is communicated with external discharge pipe. The utility model is through turbulence plate to the welding fume gas in rectangular box and carries out turbulence treatment, through airflow impact baffle and steering, utilize inertia force to separate large particle size smoke dust particles in airflow, then smoke dust particles fall to collect bottom plate and collect under the action of gravity, can reach through the large particle size particle in smoke and pretreatment collection, so that the cleanliness of smoke before being filtered by filter cartridge filter can be improved, to extend the service life of filter cartridge filter purpose.

The application relates to the field of laser technology, in particular to a bismuth fluoride-based fiber laser amplifier, which comprises a pump source for emitting pump light, a dichroic mirror, a bismuth fluoride-based fiber, a coupling lens and a second collimating lens, the coupling lens is located on the first side of the bismuth fluoride-based fiber, the second collimating lens is located on the second side of the bismuth fluoride-based fiber, the pump light transmitted through the dichroic mirror is focused and coupled into the bismuth fluoride-based fiber through the coupling lens, a seed source for emitting seed light, the seed light is focused and coupled into the bismuth fluoride-based fiber through the coupling lens or the second collimating lens, and the seed light is output from the end of the bismuth fluoride-based fiber far away from the seed source after being amplified by the bismuth fluoride-based fiber. The application is at least beneficial to providing a fiber laser amplifier for the 4.0-4.3-micron wave band, which has good stability, a simple structure, low cost and high output power.

The present application relates to the technical field of welding, and specifically discloses a SLMed GH3230 lock bottom weld seam optical fiber laser long focal length focal point hole in rotation welding method, which comprises the following steps: pretreating a SLMed GH3230 lock bottom joint to-be-welded part, and clamping and fixing a tool to ensure that the butt joint gap meets the standard; configuring a welding equipment optical assembly, adopting a 330mm focal length focusing field mirror matched with a galvanometer system, and matching a transmission optical fiber and a collimation unit; setting an argon gas protection nozzle with a tail cover and adjusting the spacing to form a welding protection atmosphere; setting welding process parameters, and controlling the laser focal point to rotate at a high speed in a circle in the welding hole through the galvanometer system; welding along the butt joint seam track to ensure that the penetration depth is not less than 4mm, and completing the non-penetration laser tailor welding of the lock bottom joint. The present application effectively suppresses weld cracks, reduces pores, improves surface forming, and is suitable for welding of lock bottom joints of various alloys.

An all-fiber laser system includes a gain fiber and a fiber-based optical coupling structure configured to introduce pump light into a signal fiber. The optical coupling structure provides intrinsic isolation of pump fibers from backward-propagating optical radiation generated in the gain fiber, including backward-propagating signal light and stimulated Raman scattering (SRS) light. By structurally suppressing coupling of the backward-propagating optical radiation into the pump fibers, the laser system mitigates population inversion collapse and suppresses laser instability and self-pulsation induced by optical back reflection during processing of reflective materials. The system enables stable continuous operation at multi-kilowatt output power without reliance on free-space optical isolators, circulators, or active shutdown mechanisms, thereby improving reliability of pump light sources and protecting an output fiber during high-power laser operation.

An optical beam delivery device includes at least first and second lengths of optical fiber that modify an angular intensity distribution of an input beam to generate an output beam with an adjustable near-field transverse spatial intensity distribution. The first length of optical fiber has a first refractive index profile (RIP) that produces a change in the angular distribution of a light beam. The second length of optical fiber having a step-index RIP that preserves a second angular distribution of the light beam. The first length of optical fiber includes a first GRIN fiber connected to a second GRIN fiber. The first GRIN fiber has a first pitch length of ½ pitch+n·pitch. The second GRIN fiber has a second pitch length of ¼ pitch+½n·pitch. A perturbation assembly alters the shape(s) of the first GRIN fiber and / or the second GRIN fiber.

A fiber laser machine tool includes a mounting plate, a fiber laser probe and a rotary actuator. The mounting plate for mounting the tool to a manufacturing system for vertical and horizontal movement in relation to a honeycomb core structure. The fiber laser probe includes an inner core with a fiber optic conductor. The inner core is installed on the mounting plate to prevent rotation of the center. The probe also includes a rotational outer sheath with a mirror for reflecting laser energy from the fiber optic conductor toward walls of cells in the honeycomb core structure to perforate the walls. The rotary actuator is installed on the mounting plate and includes a shaft linked to the rotational outer sheath to enable rotation of the mirror. Various manufacturing systems and methods for modifying walls of cells in honeycomb core structures are also disclosed.

This invention relates to the field of metal welding technology and discloses a welding process for a high-strength tool alloy steel and a ceramic composite layer, comprising the following steps: quenching and tempering the substrate, processing a dovetail-shaped nanostructure on the substrate surface to be welded using a femtosecond laser, subsequently depositing a 1μm thick Ti layer by magnetron sputtering, and annealing at 740℃-760℃ for 1 hour in a vacuum furnace. The dovetail-shaped nanostructure processed by the femtosecond laser increases the contact area between the substrate and the brazing filler metal, forming a mechanical interlocking basis. Combined with the magnetron sputtered Ti layer and subsequent annealing, it improves the interface wettability and diffusion capacity. Furthermore, the performance gradient transition of the four-layer gradient brazing filler metal film, combined with Ar-H2 mixed plasma bombardment and precision polishing and cleaning of the ceramic layer, optimizes the metallurgical reaction conditions at the brazing interface. Simultaneously, the synchronous scanning and dynamic temperature feedback control mechanism of the fiber laser and plasma arc can control the heat input during the welding process.

This invention discloses a fiber laser cutting machine with a positioning mechanism, belonging to the technical field of fiber laser cutting machines. It includes: a frame; a moving mechanism on the top of the frame, comprising a crossbeam, a moving seat, a lifting plate, and a first electric push rod; a laser cutter fixedly mounted on the bottom of the lifting plate; a driving mechanism at one end of the crossbeam; positioning mechanisms on both sides of the inner side of the frame, comprising a servo motor, a lead screw, a guide rail, an adjusting seat, a second electric push rod, and a clamping plate; and a support mechanism on the top inner side of the frame. This invention, through a multi-dimensional adjustment structure employing the cooperation of the driving mechanism and the moving mechanism, enables precise all-around adjustment of the laser cutter's horizontal, vertical, and overall height. The gear and rack meshing transmission method ensures the stability and accuracy of the position adjustment.

The disclosure provides a large-format fiber laser cutting machine, comprising: a rack, a cross frame is slidably connected on the rack, a first sliding frame is slidably connected on the cross frame, a second sliding frame is slidably connected on one side of the first sliding frame, a laser cutting structure is arranged on the second sliding frame, and the laser cutting structure comprises a fiber laser cutting head; a protection structure comprises a protection ring, a mounting frame is elastically connected on the second sliding frame, a plurality of telescopic rods are fixed on the lower side of the mounting frame, and the end of the telescopic rod is rotatably connected with the protection ring. In the large-format fiber laser cutting machine, the fiber laser cutting head is slid to cut, the protection ring protects the fiber laser cutting head, so that the fiber laser cutting head is prevented from directly contacting the large-format panel body when colliding, and the fiber laser cutting head can be lifted upward by the telescopic rod.

1. The name of the design product: fiber laser cutting equipment (Marvel Pro). 2. The use of the design product: the design product is used for laser cutting. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view. 5. The design product is a large floor equipment, and its bottom view is not common when in use, so the bottom view is omitted.

The application discloses a high-peak-power all-fiber femtosecond laser system based on GMN spectrum shaping technology, and belongs to the field of laser technology and nonlinear optics. The system comprises an all-fiber broadband GMN seed source, an all-fiber gain narrowing spectrum shaping system based on a nonlinear amplification ring mirror, a high-power fiber laser amplifier and a pulse compressor. The system comprises the following optical devices: a pump source, a wavelength division multiplexer, a gain fiber, a 2*2 fiber coupler, a beam combiner, a filter, a pump stripper and a grating pair compressor. The high-peak-power all-fiber femtosecond laser system based on GMN spectrum shaping technology can further amplify the broadband light source generated by the GMN technology, and introduces the spectrum shaping gain narrowing technology, so that the output energy and peak power of the laser system are improved while ensuring the output of the ultra-short pulse width femtosecond laser, and the application prospect of the gain management nonlinear amplification technology is widened.

The application relates to a kind of optical fiber laser cutting machine progress node locking method, device and computer equipment, belong to laser cutting field, method is by real-time monitoring cutting head position and laser power, focal point position, auxiliary gas pressure, plasma arc current, heat sink embedding interface temperature and other process parameters;When processing is interrupted, the current position coordinates, real-time parameters, program instruction sequence and closed internal circulation heat dissipation system state are recorded synchronously, the position compensation amount is calculated based on the motion trail before interruption, temperature variation and the like;When resuming processing, the heat dissipation system is preferentially adjusted to the state before interruption, the process parameters are calibrated, the cutting head is positioned to the compensation position and the cached program is executed.The application can realize the synchronous reproduction of position and process parameters after interruption, eliminate the influence of thermal deformation and mechanical deviation, guarantee the continuity of composite processing, improve the recovery accuracy and workpiece quality.

1. Name of the product in this design: Thulium-doped fiber laser therapy machine. 2. Application of this design: for urinary tract lithotripsy and cutting and vaporizing of soft and hard human tissues. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A laser module includes: a first laser diode that emits a first light beam having a first wavelength; a second laser diode that emits a second light beam having a second wavelength different from the first wavelength; a fast-axis collimating lens disposed corresponding to each of the first and second laser diodes to collimate a fast-axis direction of each of the first and second light beams emitted from each of the first and second laser diodes; a slow-axis collimating lens disposed corresponding to each of the first and second laser diodes to collimate a slow-axis direction of each of the first and second light beams emitted from each of the first and second laser diodes; and a wavelength combining element including a volume Bragg grating (VBG) or a diffraction grating.

The present invention relates to a lightweight high-power pump source, comprising a housing and N pump light chips installed in partitions in the housing, wherein N is an integer greater than or equal to 1, each pump light chip comprises a respective corresponding coupling lens group, and each pump light chip is used for emitting pump laser light with different wavelengths, performing beam shaping by means of the respective corresponding coupling lens group, and then coupling the pump laser light to an output optical fiber by means of an output lens group; and the housing is made of a graphene-reinforced aluminum matrix composite material. In the present invention, a lightweight material is used to manufacture a package housing, and therefore excellent mechanical properties and stability are maintained. Since the density of the lightweight material is much lower than that of oxygen-free copper, the weight of the pump source per unit power is effectively reduced, thereby making the entire optical-fiber laser system more lightweight, and thus facilitating installation and maintenance. Moreover, the present invention introduces multi-wavelength pump light chips to optimize the wavelength distribution of pump light, thereby making the pump light better match the absorption characteristics of ytterbium-doped optical fibers, and thus effectively redistributing the thermal load of the ytterbium-doped optical fibers and significantly increasing the threshold value of a mode instability effect, thus improving the power output capability and long-term operation stability of the optical-fiber laser system.

The application discloses an in-fiber laser processing head, and belongs to the technical field of laser processing. The in-fiber laser processing head comprises a first plane mirror, a second plane mirror and a focusing lens which are sequentially arranged along the direction of a laser light path. The first plane mirror and the second plane mirror each comprise a plurality of reflection planes with different inclination angles. The first plane mirror is used for splitting the collimated incident laser beam. The second plane mirror is used for reflecting the multiple laser beams obtained by splitting and making the multiple laser beams parallelly incident on the focusing lens. The reflected light rays of each reflection plane are focused on a working surface by the focusing lens, so that the wire / powder material coaxially fed by a feeding device is processed. Compared with the existing in-fiber laser processing head, the application significantly reduces the complexity of optical system design, and the number of optical components is small, the optical path stability is good, and an in-fiber laser processing head with a simple optical path structure and light coaxial wire / powder feeding is realized.

The optical amplification component (1) includes an amplification optical fiber (10), which has a core (11) with added active elements and is capable of propagating light of a predetermined wavelength in multimode within the core (11). The amplification optical fiber (10) includes: a first section (SC1) which includes a reference position (RP), which is located between one end (E1) and the other end (E2) and does not follow other parts of the amplification optical fiber (10). A first optical fiber portion (10A) from the reference position (RP) toward one end (E1) and a second optical fiber portion (10B) from the reference position (RP) toward the other end (E2) are arranged in a manner that do not follow each other. A second section (SC2) is provided in which the first optical fiber portion (10A) and the second optical fiber portion (10B) follow each other and surround the outside of the first section (SC1). A winding portion (R1) is provided in the first section (SC1), and the amplification optical fiber (10) of the winding portion (R1) is wound more than once with a smaller radius than other portions.

The application provides an IGBT module production tracing method based on multi-code level binding, a multi-code level coding system covering work order level, batch level, raw material level, material box level, tray level, each process level, semi-finished product level, module level and packaging level is established, a code scanning inspection unit linked with a database is arranged at each process section node to realize automatic code scanning and real-time binding, a Data Matrix code engraved by a fiber laser is selected according to a high-temperature special environment such as welding, and an intelligent binding algorithm is used to establish a full-chain binding relationship between a single module and various raw materials, multiple modules and a tray, multiple trays and a material box and process parameters. Based on the database, the flow information and key process parameters of the IGBT module from the raw material to the packaging into the warehouse of the whole process can be completely stored and traced, the problem of accurate positioning of failure is solved, and the requirement of the whole cycle tracing for the high-reliability application scene is met.

1. The name of the design product: integrated hobbing workbench coil fiber laser cutting machine. 2. The use of the design product: for cutting of stainless steel coil, galvanized coil, cold-rolled coil, hot-rolled coil and other metal sheet. 3. The design points of the design product: the shape of design 1, the shape, color and their combination of design 2. 4. The picture or photo that best shows the design points: the perspective view of design 2. 5. The bottom surface of the design product is not easily visible or invisible during use, and the design 1 top view and design 2 top view are omitted. 6. Design 1 is designated as the basic design. 7. Other circumstances that need to be explained: design 2 of the design requires protection of color.

A laser processing machine includes a coupler that is an optical device capable of changing a beam profile of a laser beam emitted from a fiber laser oscillator, a focusing lens configured to focus the laser beam emitted from the coupler, the focusing lens including a first lens region with a first focal length on an inner peripheral side thereof and a second lens region with a second focal length on an outer peripheral side thereof, the second focal length being different from the first focal length, and a moving mechanism configured to move the focusing lens in an optical axis direction.