Abstract: A method and a laser assemblage are described for material processing, such that in a laser assemblage, a laser beam is focused onto a processing/imaging plane and the laser beam can be adapted in terms of its intensity distribution by way of at least one beam shaper. Provision is made in this context that in order to avoid uniformity defects in the processing/imaging plane, the laser beam is split by way of at least one beam splitter into at least two partial or individual beams, and the partial or individual beams are differently influenced, or each partial or individual beam is constituted from a laser source having a different wavelength, in such a way that after they are combined and focused onto the processing/imaging plane they form an output beam having an intensity profile, adjacent intensity maxima of the intensity profile differing in terms of their light properties.

Abstract: An additive manufacturing apparatus forms layers with a material that is molten to produce a formed object. The additive manufacturing apparatus includes a CMT power supply that supplies as a power supply current to heat a wire that is the material fed to a workpiece, to the material; a laser oscillator that produces as a beam source a laser beam that is a beam with which the workpiece is irradiated; and a head drive unit that shifts as a drive unit a feed position for the material on the workpiece and an irradiation position for the beam on the workpiece. The additive manufacturing apparatus shifts the feed position and the irradiation position, with the irradiation position leading in a moving path for the feed position in spaced relation to the feed position.

Abstract: Electrode for an electro-erosion process, includes a shaft, a body coupled to the shaft, a plurality of machining-inserts, an insulated layer, and a flushing cover disposed on the body and coupled to the shaft. The shaft includes a channel, a plurality of first and second openings, each opening connected to the channel. The body includes a plurality of main-flushing channels, each channel connected to a corresponding first opening. The plurality of machining-inserts is spaced apart from each other along a circumferential direction and detachably coupled to a peripheral end portion of the body. Each machining-insert includes at least one third opening connected to a corresponding main-flushing channel. The insulated layer is disposed on top and bottom surfaces of the body. The flushing cover includes a plurality of side-flushing channels and a plurality of fourth openings, each channel connected to a corresponding second opening.

Abstract: A laser processing apparatus and a stack processing apparatus are provided. The laser processing apparatus includes a laser oscillator and an optical system for forming a linear beam and an x-y-? or x-? stage. With use of the x-y-? or x-? stage, the object to be processed can be moved and rotated in the horizontal direction. With this operation, a desired region of the object to be processed can be efficiently irradiated with laser light, and the area occupied by a chamber provided with the x-y-? or x-? stage can be made small.

Abstract: A laser shock peening apparatus is provided for use with a workpiece having a cavity. The apparatus includes a tubular body configured for insertion longitudinally inward of the cavity. The tubular body has a peripheral wall bounding a laser delivery channel, and has an aperture reaching outward from the laser delivery channel through the peripheral wall. An optical device is located in the laser delivery channel. The optical device is configured to direct a laser beam outward through the aperture. Additionally, the peripheral wall has internal surfaces defining a water delivery channel configured to convey a stream of overlay water to the aperture.

Abstract: A wire electrical discharge machine for machining a workpiece by generating electric discharge at a discharge gap between the workpiece and a wire electrode includes: a machining current setting unit for setting the magnitude of a normal machining current depending on the discharge gap state at application of a discharge induction voltage at the previous time or previous times; and a machining current control unit configured to control a main discharge circuit so as to supply the normal machining current to the discharge gap when the present discharge gap state is the normal state, control the main discharge circuit so as to supply a short-circuit machining current smaller than a predetermined current to the gap when the discharge gap state is the short-circuited state, and control the main discharge circuit so as not to supply any machining current to the gap when the discharge gap state is the open state.

Abstract: High-efficiency line-forming optical systems and methods that employ a serrated aperture are disclosed. The line-forming optical system includes a laser source, a beam conditioning optical system, a first aperture device, and a relay optical system that includes a second aperture device having the serrated aperture. The serrated aperture is defined by opposing serrated blades configured to reduce intensity variations in a line image formed at an image plane as compared to using an aperture having straight-edged blades.

Abstract: A laser system is configured for providing a laser line (L) in a working plane (WP) for line illumination of an object. The laser line (L) extends in a first direction (x) over a significant length and in a second direction (y) over a small extent. The laser system includes a laser source for providing a laser beam as basis for an elongated input laser beam propagating along a propagation direction (z), and a homogenization and focusing unit for homogenizing the elongated laser beam to form the laser line (L). The laser system is, for example, suitable for providing a laser line (L) that can be stitched to another laser line (L?) of another laser system.

Abstract: The present disclosure relates generally to a welding process for a battery module. In an embodiment, a system for welding two components in a battery module includes a laser source configured to emit a laser beam onto a workpiece having a first battery module component and a second battery module component. The system also has an actuator coupled to the laser source and configured to move the laser beam along a first axis and a second axis and a controller electrically coupled to the laser source and the actuator. The controller is configured to send a signal to the laser source and the actuator to form a sinusoidal lap weld on a surface of the workpiece, such that the first battery module component is electrically coupled to the second battery module component.

Abstract: Some variations provide a method of making an additively manufactured metal component, comprising: providing a feedstock that includes a high-vapor-pressure metal; exposing a first amount of the feedstock to an energy source for melting; and solidifying the melt layer, thereby generating a solid layer of an additively manufactured metal component. The metal-containing feedstock is enriched with a higher concentration of the high-vapor-pressure metal compared to its concentration in the additively manufactured metal component. The high-vapor-pressure metal may be selected from Mg, Zn, Li, Al, Cd, Hg, K, Na, Rb, Cs, Mn, Be, Ca, Sr, or Ba, for example. Additively manufactured metal components are provided.

Abstract: A system for preparing an interior surface of a tire for an adhesive includes a turntable configured to remove a layer of material from the tire, and a manipulator operable to move and rotate the tire. The turntable includes a platform rotatable about a first axis. An ablation module is disposed within the platform and includes one or more lasers each configured to emit a laser beam for removing the layer of material from the tire. A plurality of guide rollers extend from the platform and are operable between a retracted position and an extended position to selectively secure the tire to the platform. An exhaust system is disposed adjacent to the one or more lasers.

Abstract: This disclosure describes various methods and apparatus for characterizing an additive manufacturing process. A method for characterizing the additive manufacturing process can include generating scans of an energy source across a build plane; measuring an amount of energy radiated from the build plane during each of the scans using an optical sensor; determining an area of the build plane traversed during the scans; determining a thermal energy density for the area of the build plane traversed by the scans based upon the amount of energy radiated and the area of the build plane traversed by the scans; mapping the thermal energy density to one or more location of the build plane; determining that the thermal energy density is characterized by a density outside a range of density values; and thereafter, adjusting subsequent scans of the energy source across or proximate the one or more locations of the build plane.

Abstract: A laser device includes: a plurality of laser diodes that emit laser beams having different wavelengths; a partial reflection mirror that resonates the plurality of laser beams emitted by the plurality of laser diodes; and a wavelength dispersion element that causes the plurality of laser beams incident from the plurality of laser diodes in different orientations of optical axes of the laser beams to travel to the mirror with the optical axes aligned. Each of the plurality of laser diodes is integrally formed with an adjustment component that is rotatable around an emission end of the laser diode.

Abstract: A spot welding jig is provided. The spot welding jig presses electrode leads of battery cells to be closely adhered onto a bus bar when spot welding is performed to the electrode leads interposed on the bus bar along a width direction of the electrode leads. The spot welding jig includes a passing portion through which a welding laser passes, and a predetermined number of barriers configured to vertically partition an inner space of the passing portion.

Abstract: A method and device for removing an electromagnetic core, the method including: using an electromagnet to magnetize or demagnetize a metallic upper nozzle when a magneto-conductive workpiece is cut off in a WEDM manner; attracting a core capable of being completely cut off and separated in the workpiece; utilizing the metallic upper nozzle to detect whether attracted; if the core is attracted, moving the core to a target area; demagnetizing and dropping the core in a trash area. The device is applied to a WEDM machine; after the metallic magneto-conductive upper nozzle is magnetized by the electromagnet, the upper nozzle is used to attract the magneto-conductive core; a metallic water spray cover is utilized to detect whether the core is attracted; the core is moved to the target area by a motion system of the WEDM machine, and dropped in a trash device after the upper nozzle is demagnetized.

Abstract: The invention relates to a device for roughening cylinder bores using a beam tool and offering a very high level of process reliability even for a large quantity.

Abstract: A laser treatment device performing treatment by irradiating a target object having a plate surface with laser light, including: a light-transmitting region transmitting laser light emitted onto the target object; a rectifier that has a rectifier surface separated from the target object and extending along the plate surface of the target object and outward from the end of the light-transmitting region; a gas supply unit that feeds a gas to a gap between one side of the rectifier surface and the light-transmitting region, in a position separated from the light-transmitting region; and a gas exhaust unit that exhausts, on the other side that is on the other side of the light-transmitting region from the one side, the gas present in a gap between the rectifier surface and the target object from the gap, in a position separated from the light-transmitting region, thereby generating a stable local gas atmosphere.

Abstract: A device for projecting a laser beam onto a workpiece includes at least one first optical element, at least one second optical element, and at least one third optical element. The at least one first optical element is configured to project the laser beam onto the at least one second, in particular diffractive, optical element. The at least one second optical element is configured to convert an intensity profile of the laser beam. The at least one third optical element is configured to project the laser beam onto the workpiece. The device is configured such that a diameter of the laser beam on the workpiece can be varied while maintaining the intensity profile with a stationary workpiece.

Abstract: A laser-based method of removing a coating from a surface comprises directing a laser pulse to a first position on the surface, removing the coating from the first position by rapidly elevating a surface temperature of the first position using the laser pulse and thereby disassociating the coating from the surface and collecting the disassociated coating. In some embodiments, the coating comprises an environmentally harmful substance such as Hexavalent Chromium. In some embodiments, the coating comprises Diamond-Like Carbon (DLC), Vitrified Contaminant Material (CMAS). The disassociated coating is collected by a waste collector.

Abstract: Methods and systems for wire-electro discharge machining of components are described. The method comprises machining a first component by moving a wire-EDM electrode along a first set of cutting paths associated with a plurality of cutting passes, the cutting paths determined based on a desired profile shape of the component, obtaining a cutting parameter of the first component post-machining, determining a first modified cutting path for a second component based on the cutting parameter, and machining the second component by moving the wire-EDM electrode along a second set of cutting paths associated with the plurality of cutting passes, the second set of cutting paths comprising the first modified cutting path.