77 results about "Laser beam machining" patented technology

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.

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.

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.

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 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

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

This invention relates to a method for calibrating at least one optical sensor (200, 300, 400) of a laser processing head (800) for machining workpieces by means of a processing laser beam (L). The laser processing head (800) includes a first optical sensor (200, 300, 400), a deflection device (500), and a focusing device (600). The beam path of the first optical sensor (200, 300, 400) passes through the deflection device (500) and the focusing device (600). The method includes the following steps: deflecting the beam path of a first optical sensor (200, 300, 400) to a first position on a first reference (R, R1, R2, R3, R4) by a deflection device (500); generating a first optical measurement signal based on the measurement light (210, 410) received by the first optical sensor (200, 300, 400) from the first position on the first reference (R, R1, R2, R3, R4); and determining a correction value for calibrating the first optical sensor (200, 300, 400) based on the first optical measurement signal and according to the deviation between the first position on the first reference (R, R1, R2, R3, R4) and a first nominal position, wherein the position of the first nominal position relative to the processing laser beam (L) is predetermined.

The invention relates to the technical field of laser beam processing, in particular to laser degumming and stripping equipment for flexible screen production. According to the technical scheme, the device comprises a second frame shell fixedly connected to the front side of a first frame shell; the feeding bin is arranged on the frame shell II; the two groups of material moving frames are connected into the frame shell II in a sliding manner; the two groups of guide rails are fixedly connected to the left and right sides of the mounting cavity of the frame shell II respectively; the mounting frame is slidably connected between the two groups of guide rails; the at least two groups of electric push frames are fixedly connected to the mounting frame; the material suction device is fixedly connected to the bottom of the control end of each group of electric push frames; and the supporting seat is connected into the feeding bin in a sliding manner. By integrating the controllable moving material moving frame, the material sucking device, the conveying piece and the supporting base, full-automatic feeding and discharging and continuous operation in the flexible screen laser glue stripping process can be achieved, the operation efficiency and process consistency of the stripping procedure are improved, and the defects that in the prior art, the efficiency is low, the yield fluctuates, and automatic production line connection is not smooth are overcome.

A method for identifying splatters or weld seam defects during laser processing of a workpiece includes processing the workpiece using a processing laser beam of a laser processing machine, compiling at least one recording of radiation emerging during the processing of the workpiece using an optical sensor that has a plurality of pixels for recording the radiation, and inputting the at least one recording into an evaluation unit. The evaluation unit has a machine learning algorithm configured as a convolutional neural network in a U-Net architecture. The machine learning algorithm has been trained with verified recordings of splatters or weld seam defects. The method further includes identifying one or more splatters or weld seam defects in the processing of the workpiece by running the machine learning algorithm using the at least one recording as input, and outputting an output indicating the identified one or more splatters or weld seam defects.

To provide a work table and a laser beam machining method capable of improving working efficiency.SOLUTION: A work table 10 used for a laser beam machine includes a mounting part 20 attached to the laser beam machine, and a body part 30 detachably attached to the mounting part 20 to machine a workpiece. The main body part 30 includes a base part 31 to which a support member 45 for supporting the workpiece can be attached, and a frame body 40 for surrounding an outer edge of the base part 31 by its inner surface, and the frame body 40 has a height higher than an upper end of the support member 45 attached to the base part 31 and allowing the workpiece to abut thereon. With this configuration, it is possible to replace only the main body portion 30 in a state where the mounting portion 20 is fixed to the laser processing machine 1, so that the work efficiency is improved.SELECTED DRAWING: Figure 1

The invention relates to the field of laser processing, and discloses a laser beam processing treatment process for the surface of a steel bridge component, which comprises the following steps: a laser beam deflection unit drives a laser beam to carry out area scanning on the surface of the component, and a photoelectric sensing unit is used for collecting a reflection intensity signal; the control unit extracts a signal amplitude mean value to construct a feature sequence and compares the feature sequence with an oxidation judgment benchmark; and when the amplitude is in a switching interval, bidirectional scanning is switched into unidirectional intermittent scanning by modulating a galvanometer motor driving signal, and a thermal relaxation gap is constructed by using a motor commutation dead zone so as to synchronously block laser energy. Transient heat at the edge of a processing area is effectively induced to diffuse, the interface peak temperature is maintained below the oxidation critical point of a base body, and the problems of base material ablation and oxidation caused by light spot reversing staying are solved on the basis of guaranteeing pollutant stripping.

The invention relates to a laser device (10) for machining at least one workpiece (12) by means of at least one laser beam (14), in particular laser welding at least one workpiece, having the features of claim 1 and to a method for machining at least one workpiece (12) by means of at least one laser beam (14), in particular laser welding at least one workpiece, having the features of the dependent claims.

The invention is suitable for the technical field of laser drilling, and provides a drilling system based on circular saw blade center hole machining, which comprises a laser beam machining frame, a punching platform is rotationally arranged on the laser beam machining frame. The punching platform comprises a machining base. A lifting frame penetrates through the surface of the processing seat in a sliding manner; a clamping piece used for clamping a circular saw blade is arranged on the sliding rod in a sliding mode. Guide parts matched with the punching platform are symmetrically arranged on the laser beam machining frame in a sliding mode. According to the device, the first L-shaped clamping plate and the second L-shaped clamping plate are controlled to synchronously move to be close to each other, so that the circular saw blade is clamped between the first L-shaped clamping plate and the second L-shaped clamping plate, meanwhile, the first L-shaped shielding plate and the second L-shaped shielding plate cover the surface of the circular saw blade, and therefore the circular saw blade can be conveniently punched. And surface contact type clamping of the circular saw blades with different diameters is achieved, it is guaranteed that the circular saw blades are stably clamped in the dead center of the machining base, and the deviation of the punching original point is reduced.

The utility model relates to a beam protection element (44) for protecting against damage caused by directed radiation, in particular laser radiation of a laser beam processing machine (10), comprising:-at least one protection section (62) having a beam protection surface (64) for absorbing and / or reflecting the directed radiation; wherein the beam protection surface (64) is designed to be impermeable to a beam in a beam protection direction (48) of the beam protection component (44); at least one expansion section (68) having an expansion groove (70), the expansion groove (70) being designed to compensate for a temperature rise of the beam shield (44) due to the absorption and / or reflection of the directed radiation.

The invention relates to a laser device (10) for machining at least one workpiece (12) by means of at least two laser beams (14), in particular laser welding at least one workpiece, having the features of claim 1, and to a method for machining at least one workpiece (12) by means of at least two laser beams (14), in particular laser welding at least one workpiece, having the features of the additional independent claims.

The invention belongs to the technical field of laser beam machining, and discloses a cutting device for bicycle frame pipe fitting production, which comprises a laser cutter mounted on a multi-axis robot and a workbench corresponding to the working range of the multi-axis robot, a reference column and a plurality of clamping mechanisms are mounted on the workbench; the clamping mechanism comprises a magnetic gauge stand, a lower clamping seat, an arc-shaped placement groove, a magnetic suction opening, an upper clamping seat, an arc-shaped pressing opening and a liquid bag, and magnetorheological fluid is contained in the liquid bag. A relatively flexible clamping mode is adopted, compared with rigid clamping, the integrally-formed frame is not prone to being damaged, after clamping, through filling and curing of the magnetorheological fluid, the clamping effect is good, and the clamping effect is good. A gap between the clamped frame and the integrally formed frame is filled, so that the technical problem of virtual clamping is effectively solved; and compared with screw fixed connection, the position adjustment is more flexible.

The invention relates to a monitoring device (16) for monitoring and adjusting processing parameters of a processing laser beam (12) of a laser processing machine (14), comprising an imaging unit (18) and a converter medium (20) for arrangement in a beam path (24) of the processing laser beam (12); wherein the converter medium (20) is designed to absorb laser radiation (38) of the processing laser beam (12) and to emit measurement radiation (40); wherein the imaging unit (18) is designed to at least partially detect the measurement radiation (40) and to generate a measurement radiation image (50). The invention further relates to a monitoring arrangement (10) and to a monitoring method (84).

The invention provides a method for rapidly improving the surface organization structure and roughness of a cast aluminum alloy part, and relates to the technical field of laser beam machining. The method comprises the following steps that the cast aluminum alloy part is fixed to a carrying platform capable of conducting multi-axis movement; continuous laser beams are adopted for scanning the initial surface layer of the cast aluminum alloy part, and the laser power and the scanning speed are controlled to enable the adjacent molten pools to be continuously overlapped to form a uniform molten layer; when the thickness of the uniform melting layer reaches a first preset thickness required by surface structure reconstruction, laser scanning is stopped; the uniform melting 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. According to the method, by accurately controlling the overlapping and cooling rate of the molten pool, the submicron equiaxed crystal structure is directly generated under the room-temperature self-solidification condition, and the purpose of rapidly modifying the surface layer of the cast aluminum alloy part is achieved.

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

The invention relates to a method for manufacturing a timepiece part, comprising the following steps: obtaining a block to be processed; forming a timepiece component blank having a shape rotating about a rotation axis (A); wherein the method comprises the step of machining the blank with an eccentric laser beam, the direction of which is not parallel to the axis of rotation (A), does not intersect the axis of rotation (A) and is not tangent to the blank to be machined.

The invention discloses a multi-beam independent path laser microgroove machining method and device, and belongs to the technical field of laser machining. Comprising a laser light source, a shaping module, a beam splitting module, a scanning galvanometer module, a focusing module, a control module and a bearing platform for bearing a workpiece, the laser light source is located on one side of the shaping module and used for outputting a single beam of laser. The shaping module is used for shaping a single laser beam; according to the method, multiple spatially separated and parallel laser beams are obtained by splitting a single laser beam, the laser beams are guided to a corresponding number of preset independent machining paths through a control module, relative movement of the laser beams and a workpiece is controlled, and multiple independent microgroove structures which are not overlapped with one another are formed by multiple laser beams at the same time. The device meets the machining scene of two or more laser beams, is simple in structure and controllable in cost, has energy proportion adjustability and spacing adaptability, greatly improves the machining flexibility and efficiency, and is suitable for the field of precision machining.

A controller for a laser beam machine includes a display, a user interface, a processor, and a communication circuit. The display displays a first machining result indicating a machining result of a first product. The laser beam machine operates based on a first control command generated by a machining program. The user interface receives a first quantity that is an additional order quantity of the first product or a first instruction to change the first quantity. The user interface receives a start instruction for a nesting process to arrange the first quantity of the first product in at least one workpiece. The processor generates a second control command that causes the laser beam machine to produce the first quantity from the workpiece based on a result of the nesting process. The communication circuit transmits the second control command to the laser beam machine.