314 results about "Beam laser" patented technology

The invention relates to a focusing regulation and control method and device based on a vortex structure light field penetrating through a large-scale scattering medium, and the method specifically comprises the steps: generating a collimated and expanded laser beam through a laser, carrying out the phase modulation of the laser beam through a spatial light modulator, and collecting a transmission speckle image related to the scattering medium through the combination of an sCMOS camera; and obtaining an optimal phase according to a focusing index quantity fed back by a focusing area by combining a genetic neural network algorithm with the vortex structure light field, and realizing speckle focusing through multiple iterations. Compared with the prior art, a vortex structure light field method is introduced to improve the feedback focusing regulation and control effect, the problem that a traditional feedback modulation algorithm cannot focus a large-scale scattering medium is solved, and the focusing intensity is remarkably superior to that of a lens focusing method and a wavefront shaping focusing method based on Gaussian beams.

A beam laser diode takes a silicon-based nitride epitaxial wafer as a carrier and comprises a silicon substrate layer, an aluminum nitride layer, a u-type gallium nitride layer, an n-type gallium nitride layer, a quantum well layer, a p-type gallium nitride layer and a SiO2 layer which are sequentially arranged from bottom to top, the p-type electrode is arranged on the p-type gallium nitride layer, and the n-type electrode is arranged on the edge of the n-type gallium nitride layer. A nitride material on a silicon substrate is used for preparing a micro-beam stress sensitive area LD by utilizing photoetching and ICP (Inductively Coupled Plasma) etching processes for emitting light, and after electrification, the laser LD is obtained in the stress sensitive area of the beam. Under the power-on condition, before and after acceleration loading, due to the fact that quantum limits the stark effect, the frequency wavelength of laser changes, and the magnitude of the acceleration can be sensed through difference frequency.

The utility model relates to a multi-beam laser interference photoetching system which comprises a high-power laser, five high-reflectivity mirrors, two semi-reflecting and semi-transmitting mirrors, three groups of 1 / 2 wave plates and polaroids, thirteen lens supports and a sample table, the high-power laser emits a beam of light, the beam of light is divided into three coherent light beams by the five high-reflectivity mirrors and the two semi-reflecting and semi-transmitting mirrors, and the three coherent light beams are connected with the sample table. The relative positions of the five high-reflectivity mirrors and the two semi-reflecting and semi-transmitting mirrors have a certain corresponding relation with the incident angle and the space angle of the three coherent light beams, the light intensity energy density and the polarization state of the coherent light beams are changed by adjusting the angles of the three groups of 1 / 2 wave plates and the polaroids, and the light intensity energy density and the polarization state of the coherent light beams are changed through the incident angle, the space angle and the polarization state. The period and the morphology of the patterned micro-nano structure are changed, and the characteristic size of the patterned micro-nano structure is changed by changing the light intensity energy density and the polarization state, so that the process is simplified, and the control capability of the patterned micro-nano structure is improved.

The invention discloses a double-beam laser interference detection device and a detection method, the double-beam laser interference detection device is used for semiconductor etching and thin film process end point detection, and the double-beam laser interference detection device comprises an imaging unit, a detection unit and a reference unit; the detection unit comprises a first emitting part used for emitting detection light rays, and the detection light rays are focused to the wafer through the imaging unit; the first detector outputs a first reflection signal; the reference unit comprises a second emitting part and is used for emitting reference light to the imaging unit, so that the reference light is focused on the semiconductor equipment window; the second detector outputs a second reflected signal. And in the detection process, performing difference calculation on the first reflection signal and the second reflection signal to obtain a light intensity signal after interference elimination, and calculating the etching depth or the film deposition thickness of the wafer according to the light intensity signal after interference elimination. According to the invention, the problem of insufficient accuracy of detection of the wafer etching depth and the thin film deposition thickness end point caused by factors of vibration of semiconductor equipment and unstable environment can be eliminated.

A method for multi-beam laser scribing of a thin-film solar cell is provided. A laser beam output by a laser is split by an optical path unit or a splitter assembly into multiple sub-beams. The multiple sub-beams are focused by a laser-focusing scribing head assembly to form a laser focus on the thin-film solar cell. The thin-film solar cell is fixed on a bearing platform or clamped by a clamping mechanism, and driven by a drive module to reciprocate in a direction perpendicular to an output direction of the laser-focusing scribing head assembly to create a first scribe line. A position of the laser-focusing scribing head assembly is switched, and the thin-film solar cell is driven to reciprocate again to create a second scribe line. The fume and dust generated during the scribing process are removed through a fume-fume-dust extraction port corresponding to the scribing head assembly.

The utility model relates to a multi-beam laser deposition printing head device. The multi-beam laser deposition printing head device comprises a printing head base, a plurality of shaping optical lens sets, a plurality of mounting bases, a plurality of optical fiber connectors, a plurality of laser position adjusting jackscrews, a plurality of printing head guide nozzles, a feeding pipe and a feeding guide nozzle. By screwing one or more laser position adjusting jackscrews on the mounting seats, the laser position adjusting jackscrews move back and forth in respective laser position adjusting screw holes, the positions of the optical fiber connectors mounted on the mounting seats can be adjusted, and the positions of the optical fiber connectors mounted on the mounting seats can be adjusted by adjusting the positions of the optical fiber connectors on one or more mounting seats. Focusing light spots of multiple light beams are aligned with the feeding position of a coaxial material, and a complex adjusting mechanism does not need to be additionally designed in the whole process for secondary adjustment of the light spot position. Therefore, the multi-beam laser deposition printing head device has the advantages of being simple in structure, small in size and low in manufacturing cost while ensuring that the multi-beam focusing light spots can be accurately aligned with the feeding position of the coaxial material.

Provided is a handheld device and a method for detecting weld defects on a weld surface. The handheld device projects a thin beam laser light on the weld surface using a laser emitter. A processor receives the projected thin beam laser light from a laser receiving sensor, which indicates captured contours of the weld surface. The captured contours are processed to filter laser lines and extract contours. The extracted contours are utilized to classify a type of weld surface such as, surface joints, butt joints, corner joints, and tee joints. The processor, upon classifying, automatically adjusts angle and position of the laser light to be projected on the weld surface and detects deviation patterns by employing an ensemble of a laser line extraction process and a pixel width measurement process. The processor determines the detected deviation patterns as one or more defects on the weld surface that is being inspected.

Laser-scanning systems for augmented reality glasses displays and LiDAR (light detection and ranging) use photonic integrated circuits to generate multiple collimated (or low-divergence) modulated laser beams. Laser light is guided on the photonic chip, expanded, and emitted from the surface of the chip (using grating coupler devices) as one or more large-diameter (e.g., millimeter-scale), collimated or low-divergence beams. These gratings may be integrated onto movable microelectromechanical systems (MEMS) plates to steer the beam along two angular axes. Alternatively, the beam(s) from the grating(s) may be steered by a separate MEMS mirror integrated onto the photonic chip or on another chip. Such systems enable multi-beam laser scanning systems without collimation lenses, reducing the size and packaging complexity of high-performance laser scanning systems for augmented reality glasses and LiDAR.

The invention relates to a multi-beam space angle positioning device and a using method, and belongs to the technical field of laser optics, the multi-beam space angle positioning device comprises a main positioning plate and a secondary positioning plate which are coaxially arranged, a plurality of main positioning holes are formed in the main positioning plate, and the number of the main positioning holes is equal to that of laser beams; a plurality of main positioning holes are formed in the main positioning plate, the arrangement shape formed by the plurality of main positioning holes is the same as the arrangement shape of the plurality of laser beams focused to the same target spot, a plurality of secondary positioning holes are formed in the secondary positioning plate, and the number of the secondary positioning holes and the arrangement shape formed by the plurality of secondary positioning holes are the same as those of the main positioning holes; according to the multi-beam laser positioning device, the positioning problem in the application of the multi-beam laser technology in the prior art can be solved, the multi-beam positioning requirements of different space angles are met, and the multi-beam laser positioning device is simple in structure and suitable for table-board type or small-sized optical machine instruments.

The invention belongs to the technical field of aircraft surface drilling, and particularly relates to a six-degree-of-freedom positioning drilling tool for an aircraft surface, which comprises a posture adjusting mechanism, a controller electrically connected with the posture adjusting mechanism, a zero point positioner and a stand column, the two stand columns are arranged in parallel and used for positioning the tool and an aircraft wing. The plurality of zero point positioners are correspondingly and uniformly distributed on the two stand columns; the posture adjusting mechanism is arranged on the zero point positioners corresponding to the two stand columns and comprises a fixing mechanism and a moving mechanism capable of reciprocating along the fixing mechanism. The fixing mechanism is connected with the zero-point positioner through a connecting piece, and the moving mechanism comprises a left-right moving mechanism, a front-back moving mechanism and a three-beam laser moving mechanism which are sequentially arranged from bottom to top. According to the method, the distances from the three laser beams to the curved surface are fed back, whether the drilling position is in the normal direction of the curved surface or not is determined without calculation, the normal line is automatically found for aircraft surface drilling, and therefore high-precision drilling is conducted.

The invention is applicable to the technical field of marine oil and gas resource exploration, and provides an intelligent monitoring system and method for carbon isotopes of wellbore gas, the system comprises an explosion-proof shell, and further comprises a gas pretreatment module for removing impurities affecting CH4 and C2H6 gas spectral lines and adjusting temperature and pressure of measured gas; the optical cavity detection module comprises a laser, a collimator, a detector and an MPC, and is used for completing the energy level excitation of the infrared light to the gas to be detected, the injection of a detection light source into the MPC from the laser, the multiple reflection of the detection light in the MPC, the built-in multi-beam laser light source, and the absorption detection of the multi-component gas through a single optical cavity; and the data processing module is used for collecting, processing, displaying and outputting the measured data in real time. The system is high in detection precision, high in environmental adaptability, high in response speed and miniaturized in equipment, and has a wide market prospect.

The present invention relates to a dual-beam laser welding device and method, belonging to the field of material processing engineering, and comprising a structured light sensor, a front-side laser control system, a rear-side laser control system, a front-side laser, a rear-side laser, and a galvanometer system; the structured light sensor is arranged at the starting position of the welding joint of the base body, and the front-side laser control system is respectively connected to the structured light sensor and the front-side laser; the rear-side laser control system is respectively connected to the structured light sensor and the rear-side laser; the galvanometer system is arranged on the output optical paths of the front-side laser and the rear-side laser; the rear-side laser and the front-side laser are sequentially arranged along the welding direction; the present invention can achieve high-quality connection of complex structural parts that are difficult to weld by conventional lasers, and achieve the comprehensive control purpose of simultaneously reducing the porosity of the weld seam, improving the working condition adaptability, and improving the weld seam forming quality.

The invention discloses a wire harness laser coding system based on CCD camera recognition. The wire harness laser coding system comprises a mechanical arm, a wire harness clamping jaw, a wire harness end clamping unit, a horizontal guide rail, a ccd visual detection unit and a laser coding device. The sides, close to each other, of the two wire harness end clamping units are coaxially provided with two wire harness end insertion ports. The two wire harness clamping jaws are arranged on the displacement mechanical arm, the two wire harness clamping jaws can clamp the positions, close to the two ends, of the target wire harness respectively, and drive the clamped target wire harness to move to the position between the two wire harness end clamping units under the action of the mechanical arm, so that the two ends of the target wire harness are coaxially aligned with wire harness end inserting openings of the two wire harness end clamping units respectively; the two wire harness end clamping units can synchronously move in the extending direction of the horizontal guide rail. Original characters and patterns on the target wire harness are made to deviate from the sight line of the ccd visual detection unit through the ccd visual detection unit, and therefore finally achieved code printing effectively avoids the original characters and patterns on the surface of the wire harness.

The invention provides a double-energy different-beam laser arc composite efficient welding method for a large thick-wall component, a composite heat source comprises a common single laser beam, a scanning laser beam and a welding arc which are sequentially arranged, and the welding method comprises the following steps that before welding, a groove with a certain angle and a penetrating gap is formed in the large thick-wall component; the groove of the large thick-wall component is sequentially divided into a truncated edge penetrating area, a middle expansion area and a remaining coverage area outside the truncated edge penetrating area from bottom to top in the thickness direction; during welding, one-time welding double-face forming of the large thick-wall component is achieved through the synergistic effect of the three heat sources; wherein the common single laser beam is used for completely penetrating through the truncated edge penetrating area so as to carry out penetrating welding on a gap at the truncated edge; the scanning laser beam is used for welding the side wall of the middle expansion area so as to effectively fuse the middle side wall; the welding arc is used for full-coverage welding and effective filling of the remaining coverage area. The technical problem of single-pass welding bottleneck of the large thick-wall component with the thickness being 20 mm or above is solved.

A system for drying a battery electrode coating includes two laser diode arrays and a laser module. Each laser diode array emits multi-beam laser radiation to an edge region including a respective edge of a coating lane deposited on a metal foil. The laser module emits a diverging laser beam to an interior area of the coating lane between the two edges. The intensity distribution of the diverging laser beam at the coating lane spans a gap in the widthwise dimension between respective intensity distributions of the multi-beam laser radiation from the two laser diode arrays. The use of laser diode arrays to perform the edge drying allows for tailoring the intensity distribution of the combined laser irradiation to dry the coating lane without over-drying and delaminating the edges. The use of a single, diverging laser beam in the interior area allows for optimizing affordability and energy efficiency.

According to the multi-beam laser-induced sintering method, a first electrode is arranged on the first surface of a photovoltaic cell to make contact with a first grid line, a second electrode is arranged on the second surface or the first surface of the photovoltaic cell to make contact with a second grid line, and the first electrode and the second electrode are connected with the positive electrode and the negative electrode of a power source respectively to apply reverse bias voltage to the cell; and a plurality of split light spots are adopted to simultaneously scan different scanning areas of the photovoltaic cell for laser-induced sintering. The scanning area is divided into a plurality of strip-shaped blocks in the direction perpendicular to the extending direction of the first electrode, one light splitting light spot corresponds to one scanning area for laser scanning, and different light splitting light spots are different in power density. By means of the method, the laser-induced machining effects of the areas close to and away from the first electrode tend to be consistent; the situation that multiple split light irradiates the same grid line at the same time to reduce the influence of generated large current on the grid line and a cell substrate is avoided, and the laser-induced sintering effect is improved; and the bad EL black edge caused by reverse breakdown and over-processing of the edge area of the battery piece is avoided.

A river channel flow estimation method based on an unmanned aerial vehicle and decision tree regression comprises the steps that the unmanned aerial vehicle is used for carrying a small dual-beam laser radar and an ultrasonic flow meter to measure the coordinates of a river channel section measuring point, the water depth and the water body surface flow velocity; according to the determined riverway water surface range, fine segmentation division is carried out, and the abscissa of the vertical line of each segment is determined; performing supervised learning by using a decision tree regression algorithm, determining a subset after model training according to the set maximum depth of a decision tree, and predicting the water depth and the surface flow velocity corresponding to each segment vertical line; and according to the predicted water depth and surface flow velocity of each vertical line, calculating the water passing area and the average flow velocity between adjacent vertical lines, and obtaining the cross-section flow of the river channel by multiplying and accumulating the area of each section and the average flow velocity. The method has an important practical value in river flow measurement under any complex water regimen.

The invention relates to a large maritime work equipment welding double-beam laser strengthening device and method based on high-energy ray online monitoring, and the device comprises a laser welding device, a double-beam laser shock strengthening device, an X-ray detection system, a workbench and an upper computer. The laser welding device is located on the upper right portion of the workbench, the double-beam laser shock device is located on the upper left portion of the workbench, and the X-ray detection system is located on the side face of the workbench. According to the device, the material can undergo stronger plastic deformation in the solidification process, so that the grain structure of a cladding layer is more effectively refined, the stress distribution in the material is better adjusted, the accumulation of residual stress is reduced, meanwhile, the coupling condition of shock waves in a melting area is monitored in real time in the welding process by virtue of a high-energy X-ray detection system, and the welding quality is improved. Waveforms are segmented by establishing a deep learning model, and a data set is established by using an image captured by X-rays to optimize process parameters.

The invention discloses metal material surface treatment equipment and a surface treatment method. The surface treatment method comprises the following steps: performing surface pretreatment on a metal matrix to form an activated matrix with target surface roughness; metal ceramic powder is directionally deposited on the surface of the activated substrate through a spraying system, and a porous substrate layer with uniform micropore channels is generated; depositing a gradient functional coating on the porous substrate layer, and dynamically adjusting the mixing proportion and the spraying angle of spraying powder to sequentially form a bottom layer bonding interface, a transition strengthening layer and a surface layer protection layer; the gradient functional coating is subjected to laser remelting treatment, and a coating interface is scanned through a multi-beam laser array, so that metallurgical bonding is achieved between the surface protection layer and the transition strengthening layer, and between the transition strengthening layer and the bottom bonding interface; in a single treatment process, multiple protection performances of high temperature resistance, corrosion resistance and fatigue resistance are synergistically improved, so that the problem of interface stripping caused by thermal expansion mismatch of a protective coating and a matrix is solved.

The utility model provides an automatic door beam laser-beam drilling machine which comprises a machine table, a conduction mechanism is fixedly installed on the top of the machine table, a penetrating beam is clamped on the conduction mechanism, a drilling assembly used for drilling the beam is assembled on the rear side of the top of the machine table, a material guiding table is assembled on one side of the machine table, and the material guiding table is provided with a material conveying mechanism. A supporting frame is fixedly installed at the bottom of the material guiding table, a communicated material guiding groove is formed in the top of the material guiding table and the top of the machine table, the material guiding groove is in a slope shape, a mounting frame is fixedly installed at the top of the material guiding table, a guiding assembly is assembled at the top of the mounting frame, and a lining assembly matched with the cross beam is assembled at the conduction end of the guiding assembly. The guide assembly and the lining assembly are matched with each other, real-time synchronous matching can be carried out according to pushing of the cross beam in the punching period, meanwhile, the opposite face cannot be punched under the action of laser when single-face punching is carried out on the cross beam, and the machining quality of the cross beam is guaranteed.

The invention discloses a laser beam wide-area directional angle high-precision calibration device and method. The laser beam wide-area directional angle high-precision calibration device comprises an optical measurement assembly, a multi-dimensional motion adjusting mechanism and an upper computer. The multi-dimensional motion adjusting mechanism comprises a driving mechanism and a mounting platform, and the driving mechanism is used for driving the mounting platform to move towards a required pose; the optical measurement assembly is fixed on the mounting platform, and the driving mechanism drives the optical measurement assembly to move through the mounting platform, so that the orientation direction of the optical measurement assembly is adjusted, and the optical measurement assembly can receive to-be-measured laser beams with different direction angles. The output of the driving mechanism and the output of the optical measurement assembly are connected with the upper computer, and the upper computer is used for carrying out secondary calculation on the relative directional angle calculated by the optical measurement assembly according to output data of the driving mechanism so as to achieve final calibration of the directional angle. According to the invention, the sub-milliradian-level calibration precision of the wide-field directional angle can be realized, the calibration efficiency is improved, and a large-view-field and high-precision synchronous calibration technical guarantee is provided for the multi-beam laser wind-finding radar.

The invention discloses an unknown environment mapping method for a single-beam laser of aircraft, which belongs to the field of three-dimensional map reconstruction technology. Firstly, the data collected by a single-beam LiDAR is aligned with the timestamp of the stepper motor, and the obtained point cloud data is filtered and matched to obtain three-dimensional map information. The pose of the aircraft is estimated by the wheel odometer and IMU, and the loop detection is performed to reduce the cumulative error and update the three-dimensional map information in real time. The frontier search algorithm is used to determine the target point of the aircraft flight, the A* algorithm is used to plan the path trajectory, and the B-spline curve optimization algorithm is used to make the trajectory of the aircraft smoother. The control command is sent to the aircraft, and then the global three-dimensional map of the unknown environment is obtained.

The utility model provides a coaxial double-vision control device for double-beam laser processing, which comprises a welding frame and a laser beam generator, a suspension beam close to the top is connected in the welding frame in an up-down sliding manner, a rotating shaft is arranged at the bottom of the suspension beam, a transverse plate is fixedly connected to the bottom of the rotating shaft, and a lead screw is rotatably connected to the bottom of the transverse plate. According to the utility model, the transverse plate is arranged, the screw sleeve I and the screw sleeve II of which the distance is controlled by the lead screw are arranged below the transverse plate, and the adapter seats for mounting the laser beam generators are arranged at the bottoms of the screw sleeve I and the screw sleeve II, so that compared with the prior art, the laser beam generator has a function of adjusting the distance between the two laser beam generators; the double-beam laser welding device is suitable for laser welding of two welding positions with different distances, and the application range of double-beam welding is enlarged.

The invention relates to the technical field of multi-beam laser radar'low, small and slow 'target detection, in particular to a multi-channel TDC signal processing board card and a multi-beam laser radar signal processing system. According to the multichannel TDC signal processing board card, a pulse broadening circuit, a delay chain signal sampling circuit, a coding circuit, a synchronous coarse counting circuit and a data integration generation circuit are constructed based on an FPGA (Field Programmable Gate Array); the pulse broadening circuit is used for adjusting a starting moment and an ending moment of an input pulse to obtain a pulse broadening signal; the delay chain signal sampling circuit comprises a delay chain and a D trigger array; the pulse broadening signal is interpolated and delayed by a delay chain and then a thermometer code is generated by a D trigger array; the coding circuit is used for coding thermometer codes output by the D trigger array; and the synchronous coarse counter is used for triggering the data integration generation circuit, so that the data integration generation circuit integrates and outputs the coded data output by the coding circuit. According to the invention, the problem of synchronous acquisition and identification of the transmitting signal and the echo signal in the multi-beam laser radar is solved, and the time detection and measurement precision is improved.

The invention discloses a double-beam laser assisted cold spraying aluminum alloy defective part high-performance repairing method which comprises the following steps: firstly, preprocessing an aluminum alloy defective part to obtain a preprocessed aluminum alloy defective part; secondly, cold spraying repairing treatment is conducted on the preprocessed aluminum alloy defect part, meanwhile, low-power-density laser is emitted to the preprocessed aluminum alloy defect part to assist in cold spraying repairing, and therefore initial repairing aluminum alloy is obtained; then, high-power-density laser is used for conducting micro-scale laser shock peening treatment on the aluminum alloy, and the pre-repaired aluminum alloy is obtained; and then, the laser-assisted cold spraying treatment and the laser shock peening treatment flow are repeated until repairing is completed, and at the moment, repairing of the aluminum alloy defective part can be completed. On the basis of a cold spraying technology, two laser beams with different powers are carried, compared with a traditional technology, the repairing effect can be improved, heat influence on components is avoided, and therefore the method is very suitable for in-situ repairing of the aviation aluminum alloy.

The invention discloses a multi-line-beam laser weld joint identification and welding path planning method for cylinder cover plate welding packaging, which comprises the following steps: simultaneously projecting n parallel line structure laser stripes to the surfaces of a cylinder to be welded and a cover plate, n being greater than or equal to 2, and shooting and acquiring all line structure laser stripe images; identifying the inflection point coordinates of all the line structure laser stripes in the obtained image, and fitting the outer circle of the cover plate and the inner circle of the outer cylinder according to the identified inflection point coordinates; calculating the inner wall circle of the cylinder according to the inner circle of the outer cylinder and the wall thickness of the cylinder, and taking a central ellipse of a graph between the inner wall circle of the cylinder and the outer circle of the cover plate as a welding track; and the widest part of the overlapping part of the cover plate and the cylinder wall is taken as a welding track starting point. Line structure laser does not need to be adopted for scanning the workpiece to obtain the surface three-dimensional contour, the welding seam center path is directly recognized through a single picture, and efficiency is high.

The invention discloses a multi-beam laser cutting device integrated with a cooling injection system, the multi-beam laser cutting device comprises a processing table and a cutting mechanism, the cutting mechanism comprises an equipment box, a beam tube is arranged outside the equipment box, the beam tube is sleeved with a fixing sleeve, the outer surface of the fixing sleeve is fixedly connected with the outer surface of the equipment box, and the outer surface of the fixing sleeve is fixedly connected with the outer surface of the equipment box. The laser cutting device comprises a fixing sleeve, a fixing ring is fixedly connected to the interior of the fixing sleeve, the interior of the fixing ring is hollow, a water inlet pipe is communicated with the interior of the fixing ring in a penetrating mode, and a water spraying pipe is communicated with the interior of the fixing ring in a penetrating mode. The problems that local hardness is increased and toughness is reduced due to the fact that metal grains are prone to coarse oxidation and the like in a heat affected zone, meanwhile, material micro-deformation is caused by thermal expansion and shrinkage, slag and an oxide layer are prone to being attached, additional working procedures are needed for cleaning, and machining precision and machining efficiency become poor are solved.

The present invention discloses a multi-wavelength light source arc composite laser processing head and method for coaxial wire and powder delivery. The laser processing head includes a control module, a wire drawing mechanism and a multi-beam laser head; the control module includes a sensor for detecting whether the welding wire passes through; in the wire drawing mechanism, the wire drawing assembly is driven by a wire drawing motor to draw and retract the welding wire between two axially opposite wire drawing nozzles; the multi-beam laser head includes a wire guide sleeve, two access blocks with accommodating cavities, one or more groups of mirror group adjustment modules and corresponding protective mirror modules; a replaceable nozzle is provided at the end of the wire guide sleeve; and two inner and outer double cavities are provided in the nozzle. The laser processing head of the present invention can realize controllable heating of the welding wire; and can judge the laser light emission timing according to the corresponding signal. The laser processing head can be installed at the end of various motion mechanisms to realize high surface quality laser welding / additive, multi-wavelength laser composite welding / additive, laser fuse / powder delivery / wire and powder delivery welding / additive.

The invention provides a multi-beam laser quenching method, and relates to the technical field of quenching, the multi-beam laser quenching method comprises the step of providing a plurality of laser beam sources during quenching, and more accurate heating and cooling control is realized through dynamic adjustment of the laser beam irradiation sequence, time and power by the multi-beam laser quenching method. According to real-time surface temperature data, the uniformity and depth adjustability of a hardened layer on the surface of the workpiece are ensured, the power, irradiation time and scanning path of the laser beam are adjusted according to the real-time surface temperature data, and uniform distribution of the surface temperature of the workpiece is realized, so that the thermal stress problem in the traditional technology is reduced, the heating effect is optimized, and the uniformity of the surface temperature of the workpiece is ensured; and the cooling rate is controlled, the compactness of a hardened layer is ensured, the wear resistance and fatigue resistance of the workpiece are enhanced, the quenching process is optimized, the surface quality of the workpiece is improved, higher innovativeness and adaptability are achieved, and the method is particularly suitable for surface hardening treatment of workpieces in complex shapes or made of special materials.

The invention belongs to the technical field of brake beam cleaning, and discloses a brake beam laser cleaning system which comprises a conveying mechanism, a centering mechanism, a laser cleaning mechanism, a detection mechanism and an auxiliary cleaning mechanism. The brake beam is placed on the conveying mechanism to be conveyed, the centering mechanism is used for adjusting the position of the brake beam so that the brake beam can be centered along the central axis of the conveying mechanism, the detection mechanism is used for detecting the size of the brake beam, the brake beam meeting the standard is conveyed to a cleaning area, and the jacking assembly is used for jacking the brake beam to the working height of the laser cleaning mechanism. The vision measurement assembly is used for measuring the positions of the two ends of the brake beam in real time and feeding back to the laser cleaning mechanism to adjust the cleaning angle and position. According to the brake beam laser cleaning system, the full-automatic process from feeding, cleaning to discharging is achieved, the part needing to be cleaned can be accurately positioned, meanwhile, the brake beam which does not meet the cleaning requirement can be removed before cleaning, and the cleaning quality and the cleaning efficiency are improved.