460 results about "Laser assisted" patented technology

The invention provides a laser-assisted rolling forming method and device for reducing springback of a high-strength metal part, and the method comprises the steps that the motion trail of a rolling tool head is designed according to the shape of a target part, and the rolling tool head rolls a to-be-machined part according to the motion trail until the target part is formed; a laser head is fixedly installed on one side of the rolling tool head, during rolling forming, the local bending area of the to-be-machined part is heated, the material forming performance is improved, and meanwhile the forming load is reduced so as to reduce springback. According to the laser-assisted rolling forming method and device for reducing resilience of the high-strength metal part, the laser head emits the laser to preheat the to-be-machined part, the to-be-machined part is subjected to rolling forming in cooperation with the rolling tool head, the to-be-formed local area is softened, and the resilience of the high-strength metal part is reduced. And the forming load is reduced, so that the high-strength metal part with smaller resilience and higher geometric accuracy is obtained, the operation is convenient, and the machining and forming effect is good.

The invention discloses a YOLOv5-assisted vision-laser integrated efficient bird repelling method and device, and the method comprises the steps: obtaining the video stream data of a monitoring region in real time, inputting the video data into a multi-modal target detection model, extracting a key frame containing a target bird through the pre-trained multi-modal target detection model, and carrying out the recognition of the key frame, wherein the multi-modal target detection model is constructed by a YOLOv5 network structure; performing species feature analysis on the key frame; acquiring position coordinates after accurately identifying bird types; generating a dynamic control instruction based on the positioning data; the laser bird repelling module is driven to emit green light with the wavelength of 532 nm to optically repel birds; the system is integrated with a closed-loop feedback mechanism, and the bird repelling effect is verified through secondary image acquisition. The method can be applied to key fields such as airports, orchards, photovoltaic power plants and wind power plants, can also be expanded to the fields of ecological monitoring and agriculture, and has a good application prospect.

The invention relates to a photovoltaic cell preparation method, a photovoltaic cell, a laminated cell and a photovoltaic cell module. Providing an initial battery piece; depositing and forming a protective layer on the surface; carrying out laser treatment twice; printing and sintering to form an electrode; and carrying out at least two times of laser-assisted sintering on the electrode. According to the photovoltaic cell preparation method, the protection layer at the first area is removed, the doping concentration at the first area is improved, and at least two times of laser-assisted sintering are combined, so that on one hand, the metal contact area is optimized, the usage amount of silver paste is reduced, the material cost is reduced, and meanwhile, paste contact sintering is enhanced; damage caused by laser grooving doping is removed; and on the other hand, the doping concentration is optimized, the contact resistance is remarkably reduced, the open-circuit voltage and the filling factor are favorably improved, the shading loss is reduced, and the current collection efficiency is ensured, so that the photoelectric conversion efficiency and the reliability of the cell are remarkably improved, the production process is simplified, and the production cost is reduced.

The invention belongs to the technical field of moon sampling, and provides a casing type laser-assisted coring drilling tool for a moon-based extreme environment, which comprises a drill bit, a base, a laser head, a drill rod, a coring pipe and a motor, the bottom of the base is rotatably connected with a drill rod. The bottom of the drill rod is fixedly connected with a drill bit. A coring pipe is coaxially arranged in the drill rod, and an annular cavity is formed between the outer side face of the coring pipe and the inner side face of the drill rod. A laser head is mounted in the base; the laser head is located above the annular cavity, and laser emitted by the laser head penetrates through the annular cavity and is emitted out of the drill bit. Aiming at the lunar-based environment, through the synergistic mechanism of mechanical rotary rock breaking and laser-assisted softening, the lunar rock is softened by means of laser energy, the mechanical cutting resistance of the drill bit is greatly reduced, and efficient and continuous coring operation is achieved; the key technical problems that a traditional drilling tool is difficult in space arrangement, low in efficiency and the like are solved, and the efficiency of the lunar geology coring task and the rock sample fidelity are remarkably improved.

The invention relates to a Spin Exchange Relaxation-Free (SERF)-based magnetometer system (100) for detecting ultra- weak magnetic fields, particularly suited for bio¬ sensing applications such as MEG, MCG, and MRI. The system operates at room temperature and includes a VCSEL (101) emitting dual beams tuned to Rubidium-87 transitions, a microfabricated vapor cell (102) with LIAD-based heating (103), and an optical assembly (104) for polarization control. A detection unit (105) converts Faraday rotation into electrical signals, enhanced by lock-in amplification. Magnetic shielding (106), thermal management (107), and relaxation mitigation maintain SERF conditions. A calibration subsystem (109) and embedded machine learning module (110) optimize sensitivity in real time. The compact, cryogen-free architecture enables portable and wearable applications. The invention achieves femtotesla-level sensitivity while overcoming limitations of conventional SQUID-based systems, making it suitable for clinical and field deployments.

The invention discloses a laser-assisted helium arc penetration fusion welding method, and belongs to the technical field of welding. The problems that according to an existing paraxial laser-electric arc composite structure, the welding track is difficult to control, the energy coupling efficiency is low due to laser energy loss, and weld joint partial melting and undercut defects are caused due to uneven distribution of a welding temperature field due to a generated asymmetric heat source are solved. The welding method comprises the steps of 1, pretreatment; 2, after being focused by a focus lens, the laser is divided into three laser beams through a spectroscope, then the three laser beams are converged again through a plurality of reflectors, three fan-shaped light spots are formed on the surface of the to-be-welded plate after convergence, and finally the focal plane position of the laser is adjusted to be located on the surface of the to-be-welded plate; 3, setting welding current and arc voltage; and fourthly, laser is used for assisting helium arc penetration fusion welding. The method is used for laser-assisted helium arc penetration fusion welding.

The invention discloses a BDD electrode material and a preparation method thereof. The preparation method comprises the following core steps: pretreating the surface of a porous titanium substrate; depositing a nanoscale TiN film layer on the surface of the pretreated porous titanium substrate in advance; depositing a layer of single-walled carbon nanotube network on the TiN thin film layer by using an electrophoretic deposition method; growing a highly-doped BDD layer on the single-walled carbon nanotube network by adopting a plasma enhanced chemical vapor deposition technology; repeating the two steps to form a multi-layer SWCNT / BDD composite structure, and controlling the thickness of the multi-layer SWCNT / BDD composite structure to be 1-50 microns; and finally, depositing a low-doped BDD active layer with the thickness of 1-5 microns by adopting a hot filament chemical vapor deposition (HFCVD) technology. According to the pulse laser assisted preparation process provided by the invention, the femtosecond laser pulse is introduced to replace traditional plasma treatment, so that the process flow is simplified, and the efficiency is improved; according to the technology, the process is simplified, the quality of the TiN film is improved through accurate energy input, and a new way is opened up for further improving the performance of the BDD electrode.

The invention discloses an intelligent belt crack and tear detection system based on machine vision and laser coupling, and relates to the technical field of belt conveying. The intelligent belt crack and tear detection system based on machine vision and laser coupling comprises a visual detection module, an image processing flow module, a laser-assisted detection module and a data processing and control module, and the visual detection module comprises double-view-angle linear array cameras (a camera 1 and a camera 2), an area array monitoring camera and an intelligent light source system; the image processing flow module comprises multi-modal feature fusion, dynamic threshold segmentation, morphological filtering and deep learning classification; the laser-assisted detection module comprises a laser array sensor; the data processing and control module comprises an edge computing unit, an upper computer system, an integrated expert system, early warning and linkage control, system automation and intelligentization, operation and maintenance cost reduction, unmanned detection, full-process automatic operation, manual inspection frequency reduction and manpower cost saving by more than 50%.

The invention relates to a three-dimensional high-density interconnection method for a substrate and an IC chip, and the method comprises the following steps: carrying out the multi-layer dielectric composite processing of a preset silicon substrate, and obtaining a silicon through hole array structure with a preset depth-to-width ratio; performing metal filling on the silicon through hole array structure to obtain a three-dimensional interconnection conductive path; performing surface treatment on the three-dimensional interconnection conductive path to obtain a micro bump structure with gradient metallization; performing laser-assisted bonding on the micro bump structure to obtain a silicon bridge-substrate temporary structural body; carrying out bottom filling on the silicon bridge-substrate temporary structure body through a supercritical fluid auxiliary injection technology to obtain a packaging structure body with a stress release function; and a preset IC chip and the packaging structure body are assembled and fixed to obtain a three-dimensional high-density interconnection packaging body, and the technical problem that a traditional two-dimensional plane interconnection method is difficult to meet the requirement of high-density integration is solved.

The invention relates to a fatigue limit rapid prediction method based on infrared thermal image energy dissipation characteristics. The method comprises the steps of sample preparation and pretreatment, fatigue loading stress level upper limit determination, infrared fatigue test and temperature rise data acquisition, thermal image data processing and temperature rise feature extraction, energy dissipation model construction, fatigue limit value prediction, error analysis and method verification. The method comprises the following steps: monitoring steady-state temperature rise rates under different stresses through a thermal infrared imager, establishing a relation curve between a dissipation rate and a stress amplitude, predicting a fatigue limit based on a least square method, and comparing the fatigue limit with an S-N test result for verification. Compared with a traditional method, the method has the advantages of high prediction precision, high response sensitivity, low loss, short test period and the like, and is particularly suitable for rapid fatigue limit prediction and strengthening effect judgment of the high-temperature alloy material subjected to laser-assisted ultrasonic rolling strengthening.

The invention provides a production method of a photovoltaic cell. The production method comprises the following steps: printing an electrode on the surface of a cell piece; carrying out sintering treatment on the battery piece after the electrode is printed; the sintered battery piece is cut; passivating the side surface of the cut battery piece to form a passivation layer; and carrying out multiple times of optical auxiliary treatment on the battery piece, wherein the multiple times of optical auxiliary treatment comprises carrying out at least one time of laser auxiliary sintering treatment on the passivated battery piece. In the production method, multiple times of optical auxiliary treatment can meet different process requirements by setting process parameters step by step, defects generated in the sintering and cutting processes are fully repaired, carrier recombination is reduced, and the photoelectric conversion efficiency is improved.

The invention discloses a preparation method of a TBC battery electrode grid line, the electrode grid line and a TBC battery, and belongs to the technical field of solar cells, and the preparation method comprises the following steps: carrying out double-sided polishing on a silicon wafer; sequentially depositing a tunneling oxide layer and an intrinsic polycrystalline silicon layer on the back surface of the silicon wafer, and performing boron diffusion; digging an N region and a PN connection partition region on the back surface of the silicon wafer; sequentially depositing a tunneling oxide layer and an intrinsic polycrystalline silicon layer on the back surface of the silicon wafer, and performing phosphorus diffusion on the basis of the tunneling oxide layer and the intrinsic polycrystalline silicon layer; digging a P region and a GAP region on the back surface of the silicon wafer, and digging a hole channel by using a second laser; removing the borosilicate glass layer and the phosphorosilicate glass layer in the pore channel area; sequentially depositing an aluminum oxide layer and a silicon nitride layer on the surface of the silicon wafer; printing non-burn-through slurry in the main grid areas of the P area and the N area through the silk screen printing plate; and carrying out laser-assisted sintering on the auxiliary grid line pore channel region. The completeness of a passivation film layer structure on the back surface of the battery piece is ensured, meanwhile, the contact area of a metal electrode and a silicon substrate is reduced, and metal contact recombination is effectively reduced.

The invention relates to the technical field of solar cells, and discloses a laser-assisted etching slotting method for preparing high-doping-concentration P + polycrystalline silicon and application. The grooving method comprises the following steps: preparing a tunneling SiOx layer and an i-polysi layer on the back surface of a silicon wafer; performing patterning etching by using green picosecond laser so as to remove the i-polysi layer and the tunneling SiOx layer in a laser region; removing impurities in a laser area through single-side acid pickling; boron diffusion is carried out, P + polycrystalline silicon is formed on the i-polysi layer in the non-laser area, a P + emission layer is generated in the laser area, and a BSG layer is generated on the back faces of the P + polycrystalline silicon and the P + emission layer; performing patterning etching by using green picosecond laser to remove the BSG layer in the laser area; and carrying out alkali wet etching to remove the P + emission layer in the laser area so as to form a notch. According to the grooving method, the notch with the ideal grooving depth is formed, P + polycrystalline silicon with high doping concentration can be formed in the non-laser area to reduce the contact resistivity, and the cost is low.

The invention discloses a laser-assisted sintering method for a TOPCON solar cell, the TOPCON solar cell and a photovoltaic module. The front surface of the battery is divided into a first edge region, a middle region and a second edge region along a first direction, and grid lines are arranged on the front surface; performing laser-assisted sintering on the first edge region and the second edge region under a first bias voltage U1; performing laser-assisted sintering on the middle region under a second bias voltage U2; wherein U2-U1 is marked as U, 0.5 V < U < = 9V, the length of the battery along the first direction is L, the lengths of the first edge region, the second edge region and the middle region along the first direction are d1, d2 and d3 respectively, d3 = L-d1-d2, 0.02 L < d1 < = 0.25 L, and 0.02 L < d2 < = 0.25 L. A high bias value is used in the middle region, so that high photoelectric conversion efficiency of the battery piece can be kept; the edge area has a proper size, and the edge area is subjected to laser-assisted sintering by using a relatively low bias value, so that the problem of EL edge blackening can be relieved and even solved.

The invention discloses a laser-assisted polishing device for a metallographic specimen polishing machine and a using method, the laser-assisted polishing device comprises a box-type mounting rack, a horizontal moving device is arranged at the top of the box-type mounting rack, an upper moving body is arranged at the moving end of the horizontal moving device, and a vertical moving device is arranged on the upper moving body; a rotatable polishing platform is arranged at the moving end of the vertical moving device, a polishing machine is arranged below the polishing platform, a sample block detachably installed on the polishing platform is matched with the polishing machine in a polishing mode, and a laser auxiliary device with a variable focus is arranged on one side of the box type installation frame. The focus of the laser auxiliary device is always aligned with the closest contact position of the sample block and the polishing machine, and the situation that positive and negative defocusing causes heat input to affect the material property, and consequently the polishing effect is affected is avoided.

The present invention relates to an ultra-thin light-emitting diode (LED) electrode assembly, a manufacturing method of the ultra-thin LED electrode assembly, and a transfer film of an ultra-thin LED used for manufacturing the ultra-thin LED electrode assembly and relates to an ultra-thin LED electrode assembly in which a plurality of LED elements are simultaneously transferred using a laser-assisted multi-chip transfer printing method to form and pattern the LED elements, thereby preventing process defects caused by omission of the LED elements during transfer and deviation thereof from an electrode line, and defects such as dark spots caused in an LED display, a manufacturing method of the ultra-thin LED electrode assembly, and a transfer film of an ultra-thin LED used for manufacturing the ultra-thin LED electrode assembly.

The invention discloses a liquid nitrogen cooling and laser heating collaborative auxiliary cutting device and a cutting method thereof. The device comprises a laser heating system, a liquid nitrogen cooling system, a cutting system, a tool temperature monitoring system and a control system. Laser emitted by the laser heating system is focused on a to-be-machined area of a workpiece in front of a cutting edge after transmitting through the cutter body; the liquid nitrogen cooling system accurately sprays liquid nitrogen to the cutting edge area of the tool through a heat insulation liquid supply pipeline and a nozzle which are integrated in the tool rest. The control system dynamically and synergistically adjusts the laser output power and the liquid nitrogen injection flow based on a temperature signal sent by a thermocouple embedded in the cutter. According to the device, parallelism of the two processes of laser heating of a workpiece and liquid nitrogen cooling of a tool is achieved in space, dynamic matching and accurate balance of laser heating and liquid nitrogen cooling are achieved in time, and the problems that in laser-assisted cutting, the tool is prone to thermal damage, the cooling efficiency is low, and a thermal field is out of control are effectively solved.

The invention relates to the technical field of hybrid bonding, in particular to a laser-assisted hybrid bonding interconnection method, which comprises the following steps of: S1, processing the surface of a wafer to enable the to-be-bonded surface of the wafer to be flat; s2, cleaning a to-be-bonded surface of the wafer, and removing organic pollutants and an oxide layer; s3, aligning and fitting the surfaces to be bonded of the two wafers; s4, enabling the to-be-bonded surfaces to comprise dielectric layers and metal interconnection points, irradiating the dielectric layers with infrared laser, and carrying out the interconnection of the dielectric layers of the two to-be-bonded surfaces; and S5, the metal interconnection points are heated by blue laser, and the metal interconnection points of the two surfaces to be bonded are interconnected. In the hybrid bonding stage, the infrared laser and the blue laser are used for bonding the dielectric layer and the metal interconnection point respectively, partitioned irradiation and differentiated heating of the metal interconnection point and the dielectric layer are achieved, the problems of interface warping, microcracks and other thermal damage are effectively avoided, and the interconnection quality and the packaging reliability are improved.

Method for creating an electrode on a substrate using a laser assisted deposition process. A metal paste is printed and dried on the substrate to form a conductive layer, and by 2D or 3D inspection, the dimensions of the conductive layer are measured. The substrate is subject to a pretreatment process so as to increase adhesion and / or conduction of the conductive layer to the substrate. An electrode that is produced according to the present method may be used in flexible devices.

The invention provides an extrusion quality control method and device, and relates to the technical field of extrusion molding.The method comprises the steps that an annular array type multispectral thermal imaging module is used, and thermal field distribution in the extrusion process is monitored in real time; the displacement of the thermal imager generated in the moving process of the nozzle is compensated through the laser-assisted positioning system, so that a thermal imaging image is strictly synchronized with the axis of the extrusion nozzle; thermal imaging data is processed through three-dimensional dynamic reconstruction, a three-dimensional temperature field is generated, a shielding area in the thermal imaging data is repaired through a transfer learning frame, the thermal imaging module is composed of at least six groups of micro-distance thermal imagers, each group is provided with short-wave infrared and medium-wave infrared double-spectrum channels, the micro-distance thermal imagers are symmetrically distributed around the axis of an extrusion nozzle, and the medium-wave infrared and short-wave infrared double-spectrum channels are communicated with the thermal imaging module. And the distance between the device and the deposition layer is dynamically adjusted through the hydraulic driving telescopic mechanism, so that the spatial resolution is self-adaptive, accurate control, real-time defect detection and self-adaptive adjustment of the extrusion process are realized, and the production efficiency, the product quality and the material utilization rate are remarkably improved.

The utility model relates to a laser-assisted rolling work station which comprises a rolling work head, a laser work head, an adjustable support, an intelligent robot, a robot control cabinet, a main control cabinet, a laser device, a cooling system and a control screen. The laser working head is in adjustable mechanical connection with the rolling working head through an adjustable support and used for achieving laser auxiliary heating in the workpiece rolling process, and the rolling working head is mechanically connected with a mechanical arm of the intelligent robot. The laser working head, the robot control cabinet, the laser, the cooling system and the control screen are all electrically connected with the main control cabinet, and the intelligent robot is electrically connected with the main control cabinet through the robot control cabinet; the cooling system is connected with the laser through a liquid cooling pipe; the laser is electrically connected with the laser working head through an optical fiber; the laser-assisted heating device realizes laser-assisted heating in the rolling process, improves the rolling quality, is particularly suitable for rolling forming of high-strength and ultra-high-strength plates, and is high in safety and intelligent degree.

According to the double-laser-assisted MIG arc horizontal position welding method and device, through asymmetric narrow gap groove design (a3gt, a1gt and a2), the angle of an upper side groove is slightly larger than that of a lower side groove, the laser irradiation effect of an upper side wall can be improved, it is guaranteed that the upper side groove can be fully covered with laser and an arc, and the tendency of incomplete fusion defects is reduced; and meanwhile, the lasers are arranged in an asymmetric form, auxiliary lasers are obliquely emitted to the upper side wall of the groove from bottom to top to form an auxiliary laser molten pool, the height (d4) of the molten pool is widened, the problem that the molten pool on the upper side wall is prone to incomplete fusion under the action of gravity during horizontal welding of traditional laser-arc hybrid welding can be effectively solved, and the welding quality is improved.

The invention provides a laser-assisted sintering device for a solar cell. The laser-assisted sintering device comprises a sintering furnace, the laser assembly is located at the downstream of the sintering furnace and used for emitting laser for radiating the battery piece, and the sintering furnace and the laser assembly are arranged in a spaced mode in the first direction; and the transmission assembly is used for transmitting the pre-sintered battery piece in the sintering furnace and enabling the battery piece to pass through the laser radiation area. The invention further provides a laser-assisted sintering method of the solar battery piece. The laser-assisted sintering process is added after the traditional sintering process, and the surface of the cell is scanned by laser, so that the grid lines on the front and back surfaces of the cell can form good ohmic contact, the tunneling oxide layer and the doped polycrystalline silicon layer are ensured to have good passivation capability, the open-circuit voltage and fill factor of the cell are improved, and the performance of the cell is improved. And the photoelectric conversion efficiency of the cell is improved.

The invention relates to the technical field of lasers, and particularly discloses a laser auxiliary detection device and a laser detection method.The auxiliary detection device comprises a middle table, the surface of the middle table is provided with a first guide groove and a second guide groove which are communicated with each other, and the middle table is provided with a detection piece corresponding to the second guide groove in position; an outer ring seat is arranged on the periphery of the middle table and rotates around the axis, a plurality of bearing seats used for placing lasers are arranged on the outer ring seat, and guide rods sliding in the first guide grooves and the second guide grooves are arranged on the bearing seats; the laser to be detected is continuously driven to move to the detection position of the middle table through the outer ring seat rotating around the middle table, the detection piece is driven by the guide rod to automatically make contact with the laser for detection, contact is kept in the moving process of the laser, and detection is completed; the detection pieces are sequentially driven to be in contact with the laser for detection, action redundancy in the laser detection process is reduced, and the detection efficiency is improved.

The invention provides a laser-assisted rolling forming fillet radius control method based on a prediction model, and the method comprises the steps: carrying out an ultrahigh-strength steel laser-assisted rolling fillet experiment through designing a plurality of groups of laser power, scanning rate and light spot offset parameter combinations, measuring an actual fillet radius, and analyzing a quantitative relation between the actual fillet radius and process parameters. Based on this, a process parameter prediction model is established by using machine learning. When a specific target fillet radius is needed, reverse calculation can be carried out through the model, and a process parameter combination is directly obtained. The parameter combination is used for machining, and then a target part can be obtained. The quantitative prediction model is applied to the laser-assisted rolling forming process for the first time, accurate control over the small fillet radius of the ultra-high-strength steel is achieved, the fillet radius can be set as needed within the range of 1.0-2.5 times of the plate thickness, and the control precision of + / -5% is guaranteed. According to the method, the limitation of a traditional laser-assisted rolling forming process is broken through, the production efficiency and the part quality are greatly improved, and the method has wide industrial application prospects.

The invention discloses a collaborative method and device for laser-assisted three-rotating-shaft six-linkage milling of blade disc parts. According to the technical scheme, the overall layout of the machine tool is the overall layout of mature flat machine tool body and stand column movement, a movable column linear guide rail is provided with six sliding blocks, a sliding table moves left and right along a machine tool body (X axis), the stand column moves front and back along the sliding table (Z axis), a swing head moves up and down along the stand column (Y axis), and the swing head is installed on a sliding saddle at the horizontal angle of 45 degrees and can rotate around the A axis of the swing head. A rotary table B shaft is installed on the sliding table, and a workpiece shaft C shaft is vertically installed on the workpiece shaft. The double-beam collaborative laser auxiliary device adopts a symmetrical layout, positioning devices are mounted on two sides of a swinging head, and real-time dynamic compensation of a laser incident angle is realized by combining an electric push rod adjusting mechanism, so that a to-be-processed area can be fully covered by double-beam collaboration. The milling cutter has the advantages that the swinging head can rotate, so that transition is smoother when the milling cutter works, and meanwhile, the machining performance of blade disc type materials is improved under laser cooperative machining.

The invention relates to the field of power transmission line inspection, and discloses a laser-assisted focusing system of a power transmission line inspection camera, and the system comprises a laser ranging module, a visual sensor, a main control module, a target analysis module and a strategy optimization module, and the laser ranging module measures the distance between a target part on a power transmission line and a high-speed zoom lens in real time; the vision sensor synchronously collects definition characteristic data of a target part, and the main control module fuses the two types of data to generate an initial focusing parameter matrix and controls the high-speed zoom lens to adjust the focal length; the target analysis module determines a focusing strategy instruction based on the current detection task and a target priority database; the strategy optimization module corrects the initial parameter matrix according to the instruction, generates an optimized parameter matrix and feeds back the optimized parameter matrix to the main control module; the system improves the accuracy, pertinence and efficiency of focusing in a complex environment through the cooperation of multiple modules, and is suitable for the intelligent inspection work of a power transmission line.

A laser assisted bonding device and a method for bonding a semiconductor die onto a substrate are provided. The laser assisted bonding device comprises: a compression bonding mechanism, wherein the compression bonding mechanism comprises: a compression base comprising a vacuum passage extending through the compression base and fluidly connected with a vacuum source; and a compression head attached to the compression base, wherein the compression head comprises a plurality of blocks, and a plurality of grooves separating the plurality of blocks from each other and being fluidly connected with the vacuum passage, and wherein a size of a block decreases with a distance of the block to the vacuum passage; and a laser source configured for emitting a laser beam to heat solder bumps between the semiconductor die and the substrate.

The invention belongs to the technical field of welding robots, and particularly relates to a welding robot error correction method based on vision and laser data fusion. The method comprises the following steps: firstly, calibrating parameters on a dual-focus conjugate plane through a binocular camera, establishing a three-dimensional distortion correction model, constructing depth information in combination with a binocular triangle principle, completing laser light plane parameter calibration through an SVD (Singular Value Decomposition) method, and outputting large-field-of-view and high-depth-of-field laser-assisted vision measurement data; secondly, designing a three-dimensional target containing sphere characteristics, initially calibrating hand-eye parameters based on a fixed-point variable attitude method, establishing a hand-eye relationship and distance error identification model, and solving errors to realize robot-vision integrated online calibration; and finally, extracting a welding seam center point in a layered manner, planning a track through unit quaternion interpolation and a mixed curve, and writing an interface to output a welding control scheme. The problems that a traditional method is low in calibration precision and difficult in light bar extraction are solved, the measurement and positioning precision of the welding robot is greatly improved, and the high-precision welding requirement of a large component is met.

A robot including a robot arm having an end effector and a first laser diode provided on the end effector. The first laser diode is configured to emit a first laser light in a first direction. The robot further includes a camera configured to sense or detect first reflected light from an object upon which the first laser light contacts, and a processor configured to determine a clearance height between the end effector and the object using information from the first reflected light.