Abstract: Using a transmission fiber for transmitting laser beams of multiple wavelengths oscillated by a DDL module, and a laser processing machine for cutting a sheet metal with a processing head that condenses the laser beams of multiple wavelengths and irradiates them onto the sheet metal, a mild steel plate or an aluminum plate is cut, and by cutting a mild steel plate with a thickness greater than or equal to 1 mm and less than or equal to 5 mm, a surface roughness (Ra) of a cut surface of the cut mild steel plate is less than or equal to 0.4 ?m, and when an aluminum plate with a thickness greater than or equal to 1 mm and less than or equal to 5 mm is cut, a surface roughness (Ra) of a cut surface of the cut aluminum plate is less than or equal to 2.5 ?m.

Abstract: There is provided a wire electric discharge machine including a calibrating unit which carries out calibration for obtaining a detected deviation amount of the tensile force detector based on the set tensile force and a tensile force detected by the tensile force detector when the set tensile force is applied, the calibrating unit correcting output of the tensile force detector by the detected deviation amount which is obtained by the calibration, and the wire electric discharge machine carries out feedback control of the tensile force of the wire electrode based on a corrected detected tensile force which is obtained by correcting the detected tensile force of the tensile force detector by the calibrating unit.

Abstract: A welding device for joining components by resistance welding includes a pair of electrodes which can introduce an electrode force and an electrical welding current IS1 into the components, at least one further pair of electrodes which can introduce an electrode force and a further electrical welding current IS2 into the components, a power source which can generate the electrode forces, a coupling link which is mechanically connected between the power source and the pairs of electrodes and which can divide a total electrode force that can be generated by the power source into the electrode force and the further electrode force.

Abstract: An upper electrode assembly for welding fasteners includes a body that supports an electrode that has an aperture. The aperture is configured to receive a movable pin of a lower electrode assembly arranged opposite the upper electrode assembly. The lower electrode assembly supports a fastener in a welding position. The upper electrode assembly includes a position sensor which includes a position sensor member that is arranged in the body and is configured to cooperate with the pin to detect a fastener welding characteristic.

Abstract: A technique for welding two dissimilar metal panels or structures together, such as vehicle structures, by providing a sandwich structure between the dissimilar metal structures that includes one skin being made of the same metal as one of the metal structures and an opposing skin being made of the same metal as the other metal structure, and including an electrically non-conducting core between the skins.

Abstract: A wire electric discharge machine according to the present invention includes a multijoint robot including a wire crossing mechanism for crossing a wire electrode on its tip end, a robot controller for controlling the multijoint robot, a numerical controller for controlling the wire electric discharge machine, and a transmission unit for transmitting a coordinate position when the multijoint robot is driven and controlled to move the wire crossing mechanism from the robot controller to the numerical controller, and the numerical controller synchronizes a position of each shaft of the wire electric discharge machine with a movement of the wire crossing mechanism with reference to the coordinate position transmitted by the transmission unit.

Abstract: An arc welding apparatus includes: a switching device connected to both terminals of a secondary winding of a transformer whose opposite primary winding serves as a smoothing reactor on an inverter's secondary side; an output voltage detector detecting an output voltage between a welding wire and a workpiece; and a control circuit controlling the switching device and a circuit on the inverter's primary side. The control circuit includes: a first control portion that turns off the circuit on the inverter's primary side and turns on the switching device when the output voltage detected by the output voltage detector rises to a first predetermined voltage; and a second control portion that turns on the circuit on the inverter's primary side and turns off the switching device after a lapse of a predetermined time after the switching device is turned on.

Abstract: Laser annealing systems and methods with ultra-short dwell times are disclosed. The method includes locally pre-heating the wafer with a pre-heat line image and then rapidly scanning an annealing image relative to the pre-heat line image to define a scanning overlap region that has a dwell time is in the range from 10 ns to 500 ns. These ultra-short dwell times are useful for performing surface or subsurface melt annealing of product wafers because they prevent the device structures from reflowing.

Abstract: A laser cladding apparatus includes a powder supplier to supply metal powder to a portion to be processed, a laser to irradiate the portion to be processed with laser so as to melt the metal powder for cladding, and a controller. The powder supplier includes a gas pressure gauge, and the controller stores, as an initial value, a gas pressure value measured by the gas pressure gauge when the metal powder supplied by the gas pressure reaches the portion to be cladding-processed. In operation after storing the initial value, the controller sets, as a reference time, timing when the gas pressure gauge measures a same pressure as the initial value, and outputs a start signal for laser irradiation to the laser based on the reference time.

Abstract: The present disclosure provides three-dimensional (3D) printing methods, apparatuses, systems, and non-transitory computer-readable medium. The disclosure delineates real time manipulation of three-dimensional printing to reduce deformation. The present disclosure further provides 3D object formed using the methods, apparatuses, and systems.

Abstract: An artificial turf trimmer used to trim damaged and worn out artificial turf strands includes a load cradle to place and unwind a roll of artificial turf to be trimmed, a series of rollers set at an angle to maintain the length of the artificial turf to be trimmed tightly stretched, a brush to raise the turf strands, a vacuum pressure apparatus to maintain the turf strands raised during the trimming, a trimming mechanism that moves laterally to trim the damaged portion of the artificial turf strands, and a roll up cradle to wind the trimmed turf for further handling. The artificial turf to be trimmed moves along the different components of the artificial turf trimmer in a conveyance manner. Suitable trimming mechanisms may include a laser jet cutter or, alternatively, a water jet cutter. Alternative to the series of rollers, a cutting table may be provided.

Abstract: A wire electric discharge machine, configured to determine whether or not electrical discharge machining of a workpiece can be performed, includes a determination unit for determining that wire electrical discharge machining of the workpiece can be performed when a wire electrode is moved toward the workpiece and a contact detection unit detects contact, and for determining that the wire electrical discharge machining of the workpiece cannot be performed when a breaking detection unit detects the breaking of the wire electrode before the contact detection unit detects the contact.

Abstract: The present disclosure various apparatuses, and systems for 3D printing. The present disclosure provides three-dimensional (3D) printing methods, apparatuses, software and systems for a step and repeat energy irradiation process; controlling material characteristics and/or deformation of the 3D object; reducing deformation in a printed 3D object; and planarizing a material bed.

Abstract: Embodiments are directed to systems for laser cutting at least one glass article comprising a pulsed laser assembly and a glass support assembly configured to support the glass article during laser cutting within the pulsed laser assembly, wherein the pulsed laser assembly comprises at least one non-diffracting beam (NDB) forming optical element configured to convert an input beam into a quasi-NDB beam; and at least one beam transforming element configured to convert the quasi-NDB beam into multiple quasi-NDB sub-beams spaced apart a distance of about 1 ?m to about 500 ?m; wherein the pulsed laser assembly is oriented to deliver one or more pulses of multiple quasi-NDB sub-beams onto a surface of the glass article, wherein each pulse of multiple quasi-NDB sub-beams is operable to cut a plurality of perforations in the glass article.

Abstract: A spot welding method joins metal sheets by: clamping a stacked section of two or more stacked metal sheets with a pair of electrodes at a load of 100 N or more; applying pressure around the electrodes at a load, which is 5-1000% of the load due to the pair of electrodes, using a pressurizing member, which applies pressure on the stacked section in regions that are 20% or more of the total outer circumference of the electrode tips and for which the continuous regions of the entire outer circumference of the electrode tips that are not pressed are 30% or less (including 0%) of the entire outer circumference of the electrode tips; and passing welding current from the electrodes to the stacked section.

Abstract: The present invention discloses a vacuum reacting force soldering method, comprising the following steps: die-bonding a chip onto a substrate through soldering to form a semi-finished product; placing the semi-finished product into a vacuum eutectic cavity (6) of a vacuum eutectic stove; vacuum-pumping the vacuum eutectic cavity; preheating the vacuum eutectic cavity to slowly increase the temperature; heating the vacuum eutectic cavity quickly to melt the solder; applying an acting force to the vacuum eutectic cavity to accelerate a rise of the vacuum eutectic cavity after the vacuum eutectic cavity descends; performing forced refrigeration to the exterior of the vacuum eutectic cavity, while introducing a protective gas to the interior thereof; releasing the vacuum state of the vacuum eutectic cavity after the solder is solidified. This invention also discloses a soldering device using the vacuum reacting force eutectic soldering method described herein.

Abstract: A system of coating a component or part of a vehicle, device, or an apparatus with an abrasive resistant material (ARM) in order to increase the component or part's life cycle. A welding system can be used to deposit ARM between a lead electrode and a trail electrode and also deposit ARM behind the trail electrode. The welding system can also be used to deposit ARM that includes a lead electrode depositing the steel material and a trailing electrode that delivers an alloying material.

Abstract: A wire electric discharge machine for machining a workpiece includes a handling device for handling core pieces produced by the machine during the machining of the workpiece and upper and lower wire guiding heads moveable with respect to each other and with respect to the workpiece. The handling device includes a gripper mounted in a fixed or movable relation to the upper wire guiding head. The gripper moves so as to face a produced core piece with its gripper base. The gripper includes a fluid inlet where fluid flow under positive pressure enters the gripper and a fluid outlet at the gripper base where the fluid flow exits the gripper. An interior of the gripper guides the fluid flow, producing a low pressure region at the gripper base as the fluid flow exits, generating lifting force to remove the produced core piece from the workpiece by movement of the gripper.

Abstract: A method of pre-placing a reaction material onto a surface of a metal workpiece substrate involves the use of oscillating wire arc welding. The method involves depositing and adhering the reaction material from a consumable electrode rod. In doing so, the reaction material can be deposited at any time before the metal workpiece substrate is ready for joining by reaction metallurgical joining, and the size and shape of the reaction material deposit can be more easily controlled.

Abstract: A control device 8 controls a tension device 10 to apply a tension to a wire electrode WE such that a set tension value is as small as possible within a range of 80 g or less during a particular anneal period when a particular anneal current is supplied from a current supply device 5.