The invention relates to a machining head for coupling a laser beam into a liquid jet. This machining head comprises an optical unit having at least one optical element for focusing the laser beam, and a coupling unit having a liquid chamber that is delimited by a wall, wherein a nozzle having a nozzle opening for generating a liquid jet is disposed in the wall. In a state in which the coupling unit is connected to the optical unit, the laser beam that is capable of being focused by the optical unit is directable in a beam direction through the liquid chamber of the coupling unit into the nozzle opening, and is capable of being coupled into the liquid jet that is generatable by the nozzle and runs in the beam direction. For the liquid chamber to be supplied with liquid from the optical unit, a liquid interface is formed between the optical unit and the coupling unit, wherein, in the state in which the coupling unit is connected to the optical unit, the liquid interface, when viewed in the beam direction, is disposed ahead of that optical element of the optical unit that is last in the beam direction.

The invention relates to an apparatus 100, 200, 300, 700 and a method 400 for machining a workpiece 101 with a laser beam 102. The apparatus 100, 200, 300, 700 comprises a machining unit 103 configured to provide a pressurized fluid jet 104 onto the workpiece 101 and to couple the laser beam 102 through at least one optical element 105 into the fluid jet 104 towards the workpiece 101. Further, it comprises a sensing unit 107 arranged to receive a laser-induced electromagnetic radiation 106 propagating away from the workpiece 101 through the fluid jet 104 and through at least one optical element, and configured to convert the received radiation 106 into a signal 108. The apparatus 100, 200, 300, 700 also comprises a signal processing unit 109 configured determine a state of machining the workpiece 101 based on the signal 108.

An optical module for a machine for machining workpieces and/or for producing molded bodies by location-selective solidification of material powder to form connected regions by a focused laser beam includes a housing for releasably attaching the optical module to the machine and a plurality of optical components are arranged in or on the housing to collimate and focus the laser beam.

Disclosed is a nozzle unit for laser processing, which can implement one-touch coupling and separation, thereby enabling easy nozzle replacement and uniform maintenance of a nozzle in a mounted state at an accurate position while preventing damage to a nozzle joint. The nozzle unit for laser processing includes: a nozzle body including a nozzle hole and a coupling protrusion formed at an outer periphery of the nozzle hole; and a nozzle adapter allowing the nozzle body to be inserted into and coupled to a lower portion thereof and including a nozzle coupling portion allowing the coupling protrusion at a first position to be inserted thereinto or separated therefrom and allowing the coupling protrusion at a second position to be seated thereon, the second position being spaced apart from the first position in a circumferential direction of the nozzle hole.

Some embodiments of the present disclosure relate to additively manufactured vehicle exterior structures, designed to enclose the vehicle surface and support required operational loads. The vehicle structure includes cavities into which components that require an external interface are inserted. A plurality of components are assembled and integrated into the vehicle structure. The structure may be 3-D printed using multiple printing techniques applied in parallel or in series. In an embodiment, the components and structure are modular, use multiple materials and manufacturing techniques, and enable reparability and replacement of single parts.

In a laser processing method, laser lights of fiber lasers or direct diode lasers is irradiated onto an iron-based plate material from a nozzle, a nozzle with a nozzle opening whose opening diameter is preliminarily set according to a thickness of the plate material is selected from plural nozzles whose nozzle openings have different opening diameters from each other, and the plate material is cut while irradiating the laser lights onto the plate material and injecting assist gas from the nozzle opening toward the plate material.

A laser cutting head includes a controllable collimator with movable collimator lenses for controlling beam diameter and/or focal point location. The laser cutting head may be used in a laser cutting system with a control system for controlling the position of the movable collimator lenses. The lenses may be moved, for example, to adjust the beam spot size for cutting different types of material or material thicknesses. The lenses may also be moved to adjust a focal point back to the workpiece after changing the distance of the laser cutting head relative to the workpiece.

Provided is a metal 3D printer provided with a powder layer formation device for uniformly distributing a metal powder and forming a powder layer for each of a plurality of division layers obtained by horizontally dividing a three-dimensional object, a hermetically sealed chamber, a laser irradiation device for irradiating laser light to a predetermined irradiation region on each of the powder layers and forming a sintered layer, an inert gas supplying device for supplying an inert gas to the chamber and discharging fumes to the outside of the chamber, and a control device for issuing a command to start irradiation of the laser light to the laser light irradiation device after a standby time has elapsed that corresponds to a residual amount of fumes in the chamber, such that irradiation by the laser light at the necessary energy is unaffected.

A solder ball bonding (SBB) tool includes a rotatable feed plate for transporting solder balls from a translatable solder ball reservoir to a nozzle unit, which is a position at which a laser light source can irradiate and thus melt the solder balls. The SBB tool includes a gap between the reservoir and the feed plate positioned over the reservoir, and a feed mechanism coupled with the reservoir, where the feed mechanism is driven by a pressurized gas to translate the reservoir upward across at least a portion of the gap in preparation for movement of a solder ball to the feed plate and downward in preparation for rotation of the feed plate after a solder ball is moved to the feed plate. The gap may have a maximum size that exceeds a nominal size of the solder balls contained in the reservoir.

Systems and methods for dicing a sample by a Bessel beam matrix are disclosed. The method for dicing a sample by a Bessel beam matrix may comprise generating a Bessel beam matrix including multiple Bessel beams arranged in a matrix form, according to a predetermined dicing layout of the sample; controlling a focus position of each Bessel beam in the generated Bessel beam matrix; and focusing simultaneously the Bessel beams of the Bessel beam matrix at the respective controlled focus positions within the sample for dicing.