Abstract: An optical head for a laser transmission welding apparatus comprising a housing with an end on the outlet side with respect to a laser beam and a ball mounted in the housing. The ball may comprise a material whose refractive index is higher than the refractive index of quartz glass.

Abstract: A method for welding balls provides a component, provides at least two balls, places at least one first ball of the at least two balls on the component, and applies an electrical voltage in such a manner that a current flows through the at least two balls and through the component, wherein the at least two balls are simultaneously welded together and the first ball is simultaneously welded to the component.

Abstract: The present invention relates to a method for producing a component of a turbomachine from a metal alloy as well as a correspondingly produced component, wherein the method includes defining at least one first component region that will have a first property profile, and at least one second component region that will have a second property profile which is different from the first property profile; providing at least one powder of the metal alloy or several different powders of constituents of the metal alloy; additive manufacture of the component from the at least one powder, wherein the powder is melted for cohesive joining of the powder particles to each other and to a substrate or to an already produced part of the component.

Abstract: A machining condition adjustment device adjusts laser beam machining conditions for a laser beam machining device to carry out laser beam machining of a workpiece, produces each of state variables including machining condition data, workpiece data, and plasma generation amount data and determination data including plasma generation amount determination data, and learns adjustment action for the laser beam machining conditions with respect to an amount of plasma generated in the laser beam machining of the workpiece under prescribed laser beam machining conditions, with use of the produced state variables and the produced determination data.

Abstract: An optical system may include a first optical assembly and a first scan field expansion assembly. The first optical assembly may include or may be configured as a first flat-field lens. The first flat-field lens may have a first nominal scan field with a first flat focal plane. The first scan field expansion assembly may include one or more first field-expanding optical elements configured to provide a first expanded scan field coinciding with the first flat focal plane. The first expanded scan field may have a cross-sectional width and/or area that exceeds a corresponding cross-sectional width and/or area of the first nominal scan field. A method of additively manufacturing a three-dimensional object may include directing a first energy beam through the first optical assembly, and directing the first energy beam through the first scan field expansion assembly.

Abstract: Disclosed is a hot air cooking appliance comprising a base seat provided with a receiving chamber, the base seat is provided with a heating device and an air supply device capable of supplying and circulating hot air in the receiving chamber, the hot air cooking appliance is provided with an air exhaust port disposed distally from the air supply device, and during the process of cooking by the hot air cooking appliance, the water vapor generated in the receiving chamber is discharged into the atmosphere through the air exhaust port. The hot air cooking appliance of the present application is structurally simple and capable of reducing heat loss, noise, oily fume emissions, and indoor air pollution, as well as ensuring adequate amount of water vapor is generated to accomplish cooking.

Abstract: The invention relates to a method and a device for the analysis of energy beams in systems for the additive manufacture of components (70) by means of layered solidification of a construction material (55) by an energy beam (30). The invention enables a determination of position-related beam data directly with respect to the processing point during the machining process. An additive manufacturing system includes a beam deflecting device (40), a processing plane (45), and a layer applicator (60). The device according to the invention comprises a movable beam barrier (17), a movable beam sampling module (20) and a measuring device (10) with a radiation detector (12).

Abstract: A welding power supply device includes an inverter for converting DC power into AC power outputted to a welding load, and a voltage circuit for superimposing a restriking voltage on an output to the welding load when the polarity of output current of the inverter switches. The voltage circuit includes a restriking capacitor charged with the re-striking voltage, a charging circuit to charge the capacitor with the restriking voltage, and a discharging circuit to discharge the voltage in the capacitor. The charging circuit includes a DC power supply and a booster to boost DC voltage from the DC power supply. The charging circuit charges the restriking capacitor in first and second states. In the first state, the DC voltage from the DC power supply is directly applied to the re-striking capacitor. In the second state, DC voltage boosted by the booster is applied to the restriking capacitor.

Abstract: Disclosed is a laser processing device including a laser light source configured to output laser light, a converging unit configured to converge the laser light toward a first surface to form a converging point, a camera configured to image reflected light of the laser light from the first surface, a spatial light modulator for modulating the laser light according to a modulation pattern, and a controller configured to execute acquisition processing of applying the laser light to the first surface by controlling the laser light source and imaging the reflected light by controlling the camera to acquire a reflectance of the first surface for the first wavelength.

Abstract: Portable cooking stations having interlocking sear grates and griddles are disclosed. An example portable cooking station includes a sear grate and a griddle. The griddle is configured to be removably interlocked to the sear grate in a side-by-side arrangement.

Abstract: An embodiment of the present disclosure provides a toaster oven including: a cooking chamber; an air passage; and a fan. The cooking chamber includes a side wall and a top wall. One of the side wall and the top wall is provided with an air inlet in communication with a cooking space of the cooking chamber. The other of the side wall and the top wall is provided with an air outlet in communication with the cooking space. The air passage between the air inlet and the air outlet is disposed outside the cooking chamber. The fan blows air from the air inlet to the air outlet through the air passage.

Abstract: An oven appliance for providing convection and microwave heating includes a cabinet having a chamber positioned within the cabinet. The chamber is configured for receipt of food items for cooking and has a plurality of walls including a top wall, a bottom wall, a back wall, and opposing sidewalls defining the chamber. At least one of the plurality of walls defines a plurality of apertures and a first duct in fluid communication with the chamber through the plurality of apertures. The oven appliance also includes at least one convection heating element for heating the chamber. Further, the oven appliance includes a convection fan in fluid communication with the first duct. The convection fan is operable to cause air to flow out of the apertures. Moreover, the oven appliance includes a convection motor having a motor shaft. The convection motor is operably coupled to the convection fan for rotating the convection fan about the motor shaft.

Abstract: An edge position detecting apparatus for detecting a position of an edge of a disk-shaped workpiece includes a chuck table having a holding surface for holding the workpiece thereon, a laser displacement gage having a laser applying unit including a light source, for applying a linear laser beam shaped into a linear shape perpendicular to a direction of travel from the light source toward the holding surface, across the edge of the workpiece, and a beam detecting unit including a plurality of photoelectric transducers arrayed at predetermined spaced intervals along a direction for detecting a reflection of the linear laser beam, a moving mechanism for moving the laser displacement gage and the chuck table relatively to each other along the longitudinal direction, and a calculating unit for calculating the position of the edge on the basis of information of a change in an amount of the detected reflection.

Abstract: The present invention concerns an apparatus for laser or plasma cutting of pieces of laminar material, comprising a cutting station, comprising a first support structure and at least a laser or plasma cutting head which is associated with the first support structure and which is movable in relation thereto within an operating area; and a positioning element for positioning at least a portion of the laminar material in the operating area on a cutting plane. The positioning element may consist of a conveyor belt of the spike bed type. The apparatus may further comprise a first closing device suitable to close a first opening into the operating area and a second closing device suitable to close a second opening of the operating area. The positioning element may be associated with a second support structure independent of the first support structure. The first and second closing devices may also be associated with a support structure that is independent of the first support structure.

Abstract: A laser processing machine includes: a variable focal length optical system in which a focus position is periodically changed in response to a drive signal to be inputted; a position-detection light source configured to emit a detection light onto a workpiece through the variable focal length optical system; a light detector configured to receive the detection light reflected on the workpiece and output a light detection signal; a signal processor configured to output a synchronization pulse signal in synchronization with the focus timing when the detection light is focused on the surface of the workpiece in accordance with the inputted light detection signal; and a laser oscillator configured to oscillate a pulse laser beam in accordance with the inputted synchronization pulse signal to radiate the pulse laser beam on the workpiece through the variable focal length optical system.

Abstract: A unitary adapter for attaching a cutting nozzle to a laser cutting head includes an inner cylinder made of ceramic, a conductive shield sintered to the outer sidewall of the ceramic cylinder, a threaded conductive holder (for accepting the cutting nozzle) mounted in an opening at one end of the ceramic cylinder, and a coaxial connector (for connection to external measuring equipment) attached to an opposite end of the ceramic cylinder. A pair of wires is formed to be embedded within the ceramic material and provide separate electrical connections between the coaxial connector and: (1) the threaded holder, and (2) the conductive shield. The various components are sintered to the ceramic body to form permanent attachments, creating a unitary structure less susceptible to the high levels of acceleration and elevated temperatures associated with the laser cutting process.

Abstract: A method for processing a transparent workpiece that includes directing a laser beam the transparent workpiece. The laser beam incident to the impingement surface has an oblong angular spectrum and portion of the laser beam directed into the transparent workpiece is a laser beam focal line and generates an induced absorption to produce a defect within the transparent workpiece. The laser beam focal line includes a wavelength ?, a spot size wo, a Rayleigh range ZR that is greater than F D ? ? ? ? w o 2 ? , where FD is a dimensionless divergence factor comprising a value of 10 or greater, and an internal beam angle of greater than 10° relative to a plane orthogonal to an impingement surface at an impingement location, such that the defect has a defect angle within the transparent workpiece of greater than 10° relative to a plane orthogonal to the impingement surface at the impingement location.

Abstract: In a method for severing a solid body, a defined contour is stored in a control unit configured to detect contour breaches and to avoid contour breaches. A high-energy beam is moved along a contour on a surface of the solid body, with the surface of the solid body facing the high-energy beam, to produce with the high-energy beam a cutting gap. The contour on the surface is compared with the defined contour stored in the control unit, and avoidance of the contour breach is automatically deactivated when the contour on the surface of the solid body matches the defined contour and a contour breach is detected. Otherwise, the contour is omitted. Advantageously, the high-energy beam travels along the contour with an averaged line movement.

Abstract: A push-pull welding torch is disclosed. The welding torch includes a torch body and a unitary block disposed in the torch body. The unitary block includes an inlet channel, an outlet channel, and a gas channel fluidly connected to the inlet channel and the outlet channel. The inlet and outlet channels may receive a weld filler material. A quick release tensioner assembly is disclosed for a welding torch that may include a swing arm configured to mount to a drive block assembly via a pivot, a lever disposed between the swing arm and block assembly when the quick release tensioner assembly is mounted to the drive block assembly, a fastener disposed through the swing arm and lever, and a resilient member disposed between the fastener and swing arm. The fastener may be configured to engage the drive block when the quick release assembly is mounted to the drive block.

Abstract: A space oven operates in microgravity environments by forcing convection towards the center through a unique heating element and airflow design. The space oven includes a tubular chamber, a heating rack, a heating system, a cooling system, a hatch, a user interface, a microcontroller, an enclosure, at least one first vent, at least one second vent and at least one temperature sensor. The tubular chamber is the cooking area. The heating rack holds consumables in place. The heating system heats up consumables. The cooling system prevents any overheating. The hatch closes off and allows access to the inside of the tubular chamber. The user interface allows a user to input commands. The microcontroller manages the electronic components. The enclosure protects the tubular chamber. The at least one first vent and the at least one second vent reduce pressure buildup. The at least one temperature sensor monitors the internal temperature.