131 results about "Laser beam machining" patented technology

The present application discloses an optical fiber laser device (1), a laser beam machining system, and a laser welding method. The optical fiber laser device (1) comprises a plurality of laser modules (101-10n), a laser output head (20), and a control device (30); output optical fibers of the plurality of laser modules (101-10n) are symmetrically bundled to form an array of optical fibers (2032); the array of optical fibers (2032) is coupled and connected to the laser output head (20); output laser of the plurality of laser modules (101-10n) is emitted by means of the laser output head (20) to form preset light spots; the control device (30) is separately connected to the plurality of laser modules (101-10n) and provides an editing interface; and the control device (30) is used for controlling light emission and the output power of the laser modules (101-10n) to modulate the shape and energy distribution of the preset light spots.

The invention discloses a metal object outer surface wall polishing control method based on a laser beam processing technology, which relates to the technical field of metal polishing, and comprises the following steps: establishing a surface morphology numerical model of a metal object outer surface wall, and simulating the change rule of the surface morphology in the polishing process; selecting a Gaussian laser heat source, setting laser beam parameters, and establishing an instantaneous laser state numerical model; the appearance of the outer surface wall of the metal object is improved in a melting flow mode and a vaporization removal mode; the temperature field distribution and the surface appearance change of the outer surface wall of the metal object under different laser parameters are researched; judging whether micro cracks appear on the outer surface wall of the polished metal object or not; evaluating the polishing effect of the outer surface wall of the metal object under each group of qualified laser parameters; and outputting the optimal laser parameter configuration combination suitable for the current polishing task. Through a method of combining numerical simulation and experimental analysis, the change rule of the surface topography in the polishing process is simulated, and the micro-crack phenomenon after polishing is specifically studied.

The present invention relates to the field of laser beam processing technology, and may also relate to the processing of metal powders, and in particular to a method for laser cladding on the surface of a gray cast iron brake disc. The difference from the prior art is that: there is no need to perform pre-treatment work such as sandblasting, preheating, and pre-setting a base layer on the gray cast iron substrate, and the energized alloy powder is directly used through laser cladding technology to form one or more cladding layers with good metallurgical bonding on the surface of the gray cast iron brake disc. Compared with the prior art, the present invention does not require pre-treatment work such as sandblasting, preheating, and pre-setting a base layer before cladding, and is a low-energy, fast cladding method; it successfully eliminates defects such as pores and cracks that are easily generated during the cladding process; it improves the hardness, wear resistance, and corrosion resistance of the surface of the gray cast iron brake disc; and it improves the reliability and service life of the gray cast iron brake disc.

To provide a laser oscillator which enables fast and highly accurate monitoring of the output of first laser beam for use in laser beam machining.SOLUTION: A laser oscillator 80 emitting laser beam LB0 comprise a plurality of laser modules 10, a focusing optical unit 40, and an output monitoring mechanism 30A. The output monitoring mechanism 30A includes a partial reflection mirror 24, a mixing rod 35, and a photodetector 36. The partial reflection mirror 24 splits the laser beam LB0 into a first laser beam LB1 and a second laser beam LB2. The mixing rod 35 has an incident end face 35a and an exit end face 35b, and guides the second laser beam LB2 incident from the incident end face 35a to the exit end face 35b while totally reflecting the second laser beam LB2 inside. The photodetector 36 outputs an output signal on the basis of the amount of the second laser beam LB2 emitted from the exit end face 35b.SELECTED DRAWING: Figure 2

Embodiments of this application provide a laser beam machining method targeted at chalcogenide materials and an integrated photonic device, relating to the technical fields of integrated photonic chip machining. The laser beam machining method targeted at chalcogenide materials includes: acquiring a dielectric substrate with a preset size, and cleaning the dielectric substrate; preparing a uniform and dense sulfide film on a surface of the dielectric substrate; obtaining a laser spot with a preset energy distribution pattern according to a preset machining pattern; generating laser spot scanning parameters according to the preset machining pattern; and carrying out etching-free laser oxidation machining on the sulfide film through the laser spot according to the spot scanning parameters to obtain a chalcogenide integrated photonic device. The laser beam machining method targeted at chalcogenide materials can significantly simplify the machining flow of integrated photonic chips and improve the machining efficiency of photonic chips.

The utility model discloses an automatic feeding mechanism of a laser marking machine, and relates to the technical field of laser beam processing. An automatic feeding mechanism of a laser marking machine comprises a feeding conveying table, one side of the feeding conveying table is fixedly connected with an automatic feeding table and a limiting structure, and the limiting structure is located on the feeding conveying table and comprises a transmission box, a gear, a rotating motor, a first rack, two connecting frames and a second rack. The transmission box is fixedly connected to the bottom of the feeding conveying table, through cooperation of limiting frames, limiting columns, connecting frames, first racks, second racks, gears and guide arc plates, the two connecting frames can drive the two limiting frames to get close to each other, and then the multiple limiting columns on the two limiting frames make contact with the two sides of a plate conveniently; and therefore, the multiple limiting columns can sort the plates conveniently, the situation that the plates are prone to deviation after entering the feeding conveying table is avoided, workers do not need to place and adjust the plates, and the marking efficiency of the plates is further improved.

A laser beam machining method includes placing a plate material on a support, irradiating the plate material placed on the support with a laser beam to machine the plate material, detaching the plate material that has been machined from the support, and bringing a tool in a rotating state into contact with dross that adheres to the support resulting from irradiating the plate material with the laser beam such that the dross is removed from the support.

A device for generating linearly polarized light having different azimuth angles, and a laser beam machining method. The device comprises: a laser, a half wave plate, an electro-optical modulator, a reflection system and a quarter wave plate, wherein the quarter wave plate is used for adjusting light to linearly polarized light of which the polarization direction has an included angle of 45 degrees relative to a horizontal plane; the electro-optical modulator is used for adjusting the linearly polarized light output by the half wave plate, such that a polarization state of emergent light of the electro-optical modulator always lies on a meridian of a Poincaré sphere, thereby outputting Poincaré meridian polarized light; the reflection system is used for reflecting the Poincaré meridian polarized light to the quarter wave plate; and the quarter wave plate is used for adjusting the reflected light, such that the polarization state of emergent light of the quarter wave plate always lies on the equator of the Poincaré sphere, thereby outputting the linearly polarized light having different azimuth angles. The problem that the laser beam machining effects are affected by change in polarization state caused by reflectors in existing linearly polarized light generating devices is solved.

The application provides a method for rapidly improving the surface structure and roughness of a cast aluminum alloy part, and relates to the technical field of laser beam processing, and comprises the following steps: fixing the cast aluminum alloy part on a multi-axis movable object platform; using a continuous laser beam to scan the initial surface layer of the cast aluminum alloy part, and controlling the laser power and scanning speed to make adjacent molten pools continuously overlap to form a uniform molten layer; when the thickness of the uniform molten layer reaches a first preset thickness required for surface structure reconstruction, stopping the laser scanning; the uniform molten layer is self-cooled and solidified in a room temperature environment to form a solidified surface layer; wherein the solidified surface layer forms a submicron equiaxed crystal structure, and the roughness of the solidified surface layer is smaller than that of the initial surface layer. The method directly generates a submicron equiaxed crystal structure under the condition of room temperature self-solidification by accurately controlling the molten pool overlap and the cooling rate, and achieves the purpose of rapidly modifying the surface layer of the cast aluminum alloy part.

The invention discloses an ultrasonic-assisted ultrafast laser glass trepanning device and method, and relates to the field of laser beam machining.The ultrasonic-assisted ultrafast laser glass trepanning device comprises a main box body, an operation cavity is formed in the main box body, a laser generating device is arranged on one side in the operation cavity, and a material conveying line is arranged at the position, located in the middle of the operation cavity, of the main box body; a fixing assembly is arranged at the top of the material conveying line, and a jacking assembly is arranged between the fixing assembly and the material conveying line. A discharging table top is arranged in the middle of the material conveying line, a feeding sensor is arranged at the front end of the discharging table top, an ultrasonic assembly is arranged on the side, located on the discharging table top, in the operation cavity, a lifting assembly is arranged on the side, away from the discharging table top, of the ultrasonic assembly, and a width adjusting assembly is arranged on the side, away from the ultrasonic assembly, of the lifting assembly. An auxiliary adjusting wheel is arranged on one side of the bottom of the width adjusting assembly. According to the glass cutting device, assembly line operation is adopted for production, labor dependence is reduced, the glass cutting speed is ultra-high, meanwhile, the higher machining precision is achieved, and the cutting quality is improved.

The present invention discloses a spectral beam combining device and method for a blue light composite laser, belonging to the field of laser beam processing technology, including a housing, a blue light laser transmitter, a main housing and a beam dual-mirror synchronous switching mechanism; wherein the beam dual-mirror synchronous switching mechanism includes a slide frame, a reduction motor, a screw and a sleeve strip, and also includes a beam reflector tilt switching mechanism, a sealing sleeve block and a multi-point detection component. The present invention has the ability to remotely know the damage of the main beam combining mirror and the main focusing mirror through the beam dual-mirror synchronous switching mechanism, and automatically replace the damaged main beam combining mirror and the main focusing mirror, so that the downtime of laser beam processing is greatly shortened, and the normal use of the beam combining device can be quickly restored, and the use of laser beam processing can be quickly restored, thereby solving the problem that the beam combining device has a long waiting time for maintenance, which leads to a long downtime for laser beam processing maintenance and it is difficult to quickly restore the normal use of the beam combining device.

This invention provides a heat spreader manufacturing process, relating to the field of laser beam processing technology, including: Step S1: After positioning the copper mesh and the lower cover of the heat spreader, place them into the fixture of the laser machine; Step S2: Determine the laser path of the laser machine, perform laser engraving, and use the laser beam to bond the copper mesh and the lower cover of the heat spreader together; The high temperature emitted by the laser beam changes the roughness of the copper mesh, achieving an oxidation effect. The laser beam firmly bonds the copper mesh and the lower cover of the heat spreader together, preventing them from falling off, thus providing a fixing effect, equivalent to the sintering effect of the original technology; The laser beam sweeps across the capillary mesh, and the emitted high temperature instantly changes the roughness of the capillary mesh, achieving the oxidation effect of the original technology; The laser beam is very fast, with a single product expected to be completed within 1 minute, improving efficiency and reducing production costs; It solves the temperature challenge between oxidation and reduction, reducing the difficulty of reduction.

This invention discloses a method for processing conical gas-filled holes in ICF target pellets using ultrafast lasers, relating to the field of laser beam processing. It addresses the limitation of traditional machining in target pellet drilling due to the requirements of small hole size and material. The method includes: passing the laser beam from a femtosecond laser through a focusing objective lens to focus on the top of the target pellet; adjusting the average power of the femtosecond laser to 2-4 mW; processing concentric circles with a maximum diameter of 4-20 μm centered on the target pellet apex; after processing one layer, turning off the laser and moving it back to the center, lowering the Z-axis; until the laser focus is located 5-10 μm above the target pellet apex surface or 2 / 3 of the target pellet wall thickness. This invention can process conical gas-filled holes in target pellets of different sizes, ensuring the gas-filled tube is inserted into the required target pellet shell position while significantly improving the accuracy and success rate of subsequent tube-particle assembly, which is of great significance for supporting the advancement of laser inertial confinement fusion experiments.

The present invention discloses an ultrasonic-assisted ultrafast laser glass hole-making device and method, which relates to the field of laser beam processing. The device comprises a main housing, an operating chamber is provided inside the main housing, a laser generating device is provided on one side of the operating chamber, a material transport line is provided in the middle of the main housing, a fixed component is provided on the top of the material transport line, and a lifting component is provided between the fixed component and the material transport line; a material discharge table is provided in the middle of the material transport line, a material arrival sensor is provided at the front end of the material discharge table, an ultrasonic component is provided on one side of the operating chamber at the discharge table, a lifting component is provided on the side of the ultrasonic component away from the discharge table, a width adjustment component is provided on the side of the lifting component away from the ultrasonic component, and an auxiliary adjustment wheel is provided on the bottom side of the width adjustment component. The present invention adopts assembly line production to reduce reliance on manpower, and has ultra-fast glass cutting speed while achieving more precise processing accuracy and improving cutting quality.

The invention discloses a stainless steel gas-insulated switchgear welding machine adjusted through an optical assembly, and relates to the field of intelligent welding based on laser beam machining, the stainless steel gas-insulated switchgear welding machine comprises a welding machine body and an optical fiber laser welding head assembly, and the optical fiber laser welding head assembly is arranged on the outer side of the welding machine body; a reserved butt joint handle is arranged on the outer side of the optical fiber laser welding head assembly. An optical lens assembly is arranged on the outer side of the reserved butt joint handle, and a reserved external part is fixedly connected to the upper end of the optical fiber laser welding head assembly in a butt joint mode. According to the stainless steel gas-insulated switchgear welding machine adjusted through the optical assembly, the laser mode is changed through the optical element, penetration welding of a stainless steel gas-insulated switchgear is achieved, and the welding quality is improved; the laser mode output by the whole fiber laser is Gaussian light, the light beam characteristic is sharp, the fiber laser can be used for metal cutting and welding, the optical characteristic is changed through the optical assembly in the stainless steel gas-insulated switchgear penetration welding process application, and welding damage is avoided even if welding deviation occurs.

The invention relates to a machining device (10) and a method for machining a workpiece (20), in particular a workpiece equipped with cutting edges, by means of a high-energy machining beam (30) comprising: a machining device (40), a holder (50) and a base (60), wherein the holder (50) is arranged on the base (60) and the machining device (40) is mounted on the holder (50) so as to be pivotable and / or rotatable about a pivot axis (70);the processing device (40) comprising: a processing beam source (80) for generating and / or coupling the processing beam (30) into the processing device (10), a deflection device (90) by means of which the processing beam (30) can be deflected at different angles, and a beam path (100) of the processing beam (30) which runs between the processing beam source (80) and the deflection device (90), wherein the entire beam path (100) between the processing beam source (80) and the deflection device (90) is designed such that it moves with the processing device (10) when the processing device (10) is pivoted and / or rotated, and the distance and orientation of the entire beam path (100) between the processing beam source (80) and the deflection device (90) with respect to the pivot axis (70) remains constant.

Device (1) for machining an elongated workpiece (2) such as pipes or other metal semi-finished products by means of a laser beam (3) circulating around the workpiece (2), comprising a machine body (4), a holding element (5) rotatably mounted relative to the machine body (4), an opening (6) enclosed by the holding element (5) through which the workpiece (2) to be machined passes during machining of the workpiece (2), wherein the holding element (5) describes an enveloping surface (7) at least partially enclosing the workpiece (2) during its rotational movement, a laser beam source (8) for generating the laser beam (3), wherein the laser beam source (8) is held by the holding element (5), characterized by that the laser beam source (8) is arranged on the side of the holding element (5) facing away from the workpiece (2) during machining, i.e. on the outside of the described enveloping surface (7), and that the holding element (5) is rotatably mounted by the machine body (4) at at least two bearing points (20, 20a, 20b, 20c), the largest part of the holding element (5) running between the two bearing points (20, 20a, 20b, 20c) and a smaller part of the holding element (5) running beyond at least one of the two bearing points (20, 20a, 20b, 20c).

The invention relates to a method for processing a hairpin (12) by means of a pulsed laser beam (18), wherein the method comprises: processing the hairpin (12) by means of the pulsed laser beam (18); detecting a sound emission from the hairpin (12) during the processing of the hairpin (12); and determining information about the processing of the hairpin (12) by analysing the detected sound emission.

Laser beam processing method for a wafer (W) having a device (D) in each of the regions which are subdivided by a plurality of provided division lines (R) formed in a grid, the method comprising: a first groove processing training step for emitting a pulsed laser beam (L) along the intended division line (R) in such a way that the overlap rate of the concentrated beam spots (C1, C2) of the pulsed laser beam, which is concentrated onto the wafer (W), is identical or less than 95%, in order to form a first laser beam processing groove (S1); and a second groove processing training step after the execution of the first groove processing training step for emitting the pulsed laser beam (L) along the first laser beam processing groove (S1) in such a way that the overlap rate of the concentrated beam spots (C1, C2) of the pulsed laser beam, which is concentrated on the wafer (W), is identical or more than 97%, in order to form a second laser beam processing groove (S2) on a bottom region of the first laser beam processing groove (S1), wherein the depth of the second laser beam processing groove (S2) is greater than the depth of the first laser beam processing groove (S1), and debris generated in the second groove processing step is deposited within the first laser beam processing groove (S1) so that it does not protrude to a surface of the wafer (W).

The invention relates to a laser machining system (100) for machining a workpiece (42) by means of an output laser beam (3), comprising a laser radiation source (50), an optical device (10), a feed device (60) and a control device (70).

The utility model relates to the field of laser beam machining equipment, in particular to ultrasonic vibration auxiliary laser welding equipment. The equipment comprises a workbench and a laser welding assembly, a welding position used for fixing a tool is arranged on the workbench, an ultrasonic vibration auxiliary device corresponding to the welding position is fixedly connected to the workbench, and the auxiliary device comprises an ultrasonic vibration mechanism. The ultrasonic vibration mechanism comprises a transducer and an amplitude-change pole arranged at the output end of the transducer, the welding equipment further comprises a supporting base, a pushing assembly used for driving the ultrasonic vibration mechanism to do reciprocating motion is arranged on the supporting base, and a vibration die head used for making contact with a tool is arranged at the end, away from the transducer, of the amplitude-change pole. And the jacking force of the vibration die head to the contact of the tool can be controlled through the reciprocating motion of the jacking assembly. According to the utility model, the amplitude of the workpiece to be welded can be adjusted by adjusting the reciprocating motion of the air cylinder so as to meet the requirements on different amplitudes during welding.

A control unit for use in a laser system for working a workpiece by a laser beam is configured to capture, based on at least one translation axis position, a translational position of a working head which can be changed by a movement unit, capture, based on at least one rotation axis position, a rotational orientation of the working head which can be changed by the movement unit, and issue or revoke a laser beam release for an application of the laser beam to the workpiece. The laser beam release depends on a serial test of the translational position and the rotational orientation of the working head.

To provide a laser beam machining apparatus and a laser beam machining method capable of machining a workpiece by accurately irradiating a target position with a laser beam even when adjusting an irradiation position of the laser beam using a machining mark formed by irradiation of the laser beam.SOLUTION: In the laser processing device 100, the control unit 60 controls the camera 20 to image the transmitted illumination light 51, which is the illumination light that has passed through the through-hole 43 of the processing mark 41, in a state in which the processing mark 41 is irradiated with the visible ray as the illumination light from the transmission layer 40b side by the illumination unit 50.SELECTED DRAWING: Figure 6

The application discloses a cylindrical rotation multi-path laser beam processing method and relates to the technical field of cylindrical surface processing. The processing method comprises the following steps: S1, adjusting the light path of a laser; S2, marking points or lines on the surface of a polyurethane cylinder through laser light emission, and driving the laser to offset through a marking control system; S3, moving the laser to the focal point position of the polyurethane cylinder, marking and slotting through laser light emission, and rotating the polyurethane cylinder simultaneously for one circle, wherein the adjustment of the laser light path position is completed when the line width of laser marking and slotting is the same as the line width of polyurethane cylinder rotation; and S4, adjusting the parameters of the marking control system, and reaching the processing slotting position of the laser, and processing the polyurethane cylinder through laser light emission. The application provides a cylindrical rotation multi-path laser beam processing method, laser processing polyurethane cylinders, limited production cost change, significantly improving production efficiency, and reducing production cost.

This invention discloses a laser-processed honeycomb-type energy-saving electrothermal anti-icing surface and its preparation method, belonging to the field of metal surface laser beam processing technology. The honeycomb-type energy-saving electrothermal anti-icing surface is prepared by bonding an HMPC microstructure surface, after low surface energy treatment, to an electrothermal layer. The HMPC microstructure layer has a hexagonal hollow micropillar structure array processed by femtosecond laser; the electrothermal layer is prepared by bonding insulating polyimide layers to both sides of the MWCNTs / AgNWs electrothermal film. The honeycomb-type energy-saving electrothermal anti-icing surface prepared by this invention has excellent anti-icing / de-icing capabilities. The structural layer forms a stable heat insulation layer by increasing the specific surface area, which, together with the electrothermal layer, achieves efficient heat storage and slow release. Under an applied voltage of 1V, ice melting is achieved within 64s. The surface ice adhesion strength is tested to be 0.96kPa, which is only 0.0138 times that of pure aluminum surface, avoiding the defects of intermittent ice melting and interrupted heating in mainstream reverse circulation defrosting technology.

To provide a laser beam machining device and a laser beam machining method capable of performing machining by accurately irradiating a target position with a laser beam.SOLUTION: A laser beam machining device 100 includes a laser beam emitting unit 10 that emits a laser beam L toward a wiring pattern 2 that is a target object, a visible-light imaging unit 20 that acquires a visible-light image 50v by imaging a visualization member 50 that generates a position specification visible-light Lv at a position where the laser beam L is emitted, and a control unit 60 that performs laser machining of the wiring pattern 2 by adjusting a relative position between an emitted position of the laser beam L and the wiring pattern 2 such that the laser beam L is emitted to the wiring pattern 2 on the basis of a position of the position specification visible-light Lv captured in the visible-light image 50v.SELECTED DRAWING: Figure 1

The utility model discloses a laser drilling tool for a combustion chamber of a gas turbine, and belongs to the field of laser beam machining equipment. Comprising a laser, the laser is connected with a sliding rail which is vertically arranged, and a supporting table is fixed below the sliding rail. A rotating assembly is rotationally arranged on the supporting table and comprises a rotating disc, a driving device and a jacking device, a vertical pipe is coaxially fixed to the upper portion of the rotating disc, and the vertical pipe and the sliding rail are arranged in parallel in a spaced mode. The vertical pipe is sleeved with the jacking device, the jacking device is used for supporting the inner wall of the combustion chamber shell, the transmitting end of the laser device faces the combustion chamber shell, and the driving device is fixed to the lower portion of the supporting table and drives the rotary disc to rotate. According to the punching device, the combustion chamber shell which is bent to be cylindrical can be punched, the advantages of laser punching are fully played, bending operation is not needed after punching, and then the qualified rate is increased.

Provided is a laser beam machining method for forming a modified region by irradiating the interior of a wafer with a laser beam, the laser beam machining method including a first irradiation step for irradiating a first street of the wafer with the laser beam, and a second irradiation step for irradiating a second street that crosses the first street with the laser beam after the first irradiation step, where, in the second irradiation step, the total output of the laser beam at the intersection of the first street and the second street is changed.

To provide a spatter adhesion suppressing device of a laser beam machine, a laser beam machine, and a laser beam machining method, capable of effectively suppressing adhesion of spatter to an inner surface of a pipe while suppressing deposition of spatter on a spatter guard when performing laser beam machining of a pipe-shaped workpiece.SOLUTION: A spatter adhesion suppressing device of a laser beam machine includes a spatter guard inserted into a pipe and having a distal end portion that receives spatters generated due to irradiation of the pipe with a laser beam, an injection unit that injects a fluid to the distal end portion of the spatter guard, and a discharge device that discharges a spatter adhesion inhibitor to the distal end portion of the spatter guard and an inner surface of the pipe.SELECTED DRAWING: Figure 1