Systems, devices, and methods for additive manufacturing are provided that allow for components being manufactured to be assessed during the printing process. As a result, changes to a print plan can be considered, made, and implemented during the printing process. More particularly, in exemplary embodiments, a spectrometer is operated while a component is being printed to measure one or more parameters associated with one or more layers of the component being printed. The measured parameter(s) are then relied upon to determine if any changes are needed to the way printing is occurring, and if such changes are desirable, the system is able to implement such changes during the printing process. By way of non-limiting examples, printed material in one or more layers may be reheated to alter the printed component, such as to remove defects identified by the spectrometer data. A variety of systems, devices, and methods for performing real-time sensing and control of an additive manufacturing process are also provided.

A leakage laser beam detecting method includes a coating step of coating the lower surface of a wafer with an oil marker, thereafter, a press-bonding step of press-bonding an adhesive tape to the lower surface of the wafer, thereafter, a modified layer forming step of applying a laser beam having a wavelength that can be transmitted through the wafer to the wafer from the upper surface thereof while making the laser beam be focused at a focused point within the wafer thereby to form modified layers in the wafer, thereafter, a peeling step of peeling off the press-bonded adhesive tape, and a leakage laser beam detecting step of detecting areas of the lower surface where the oil marker has been removed when the press-bonded adhesive tape is peeled off as areas marked by leakage laser beams.

An apparatus for laser processing of very wide non-woven fabric materials at high speeds. This invention enables a laser beam to sever, perforate and pattern a large piece of fabric materials planarly disposed at regular or irregular spatial intervals over the entire width while the fabric passes from one roller to another roller at high speeds by precisely managing focus and intensity of the beam at the focal point on the web. A control system managing the laser processing system enables rapid reconfiguration of perforation patterns. The fabric can be woven or nonwoven, homogeneous or nonhomogeneous material with uniform or nonuniform thickness. An optical sensor is provided to sense the laser processing as it is performed and provide feedback to a system controller to optimize laser processing performance in real time.

The invention relates to a device for inductive heating of a component 10, having a component placement unit for the component, an induction coil, with which the component can be heated inductively, at least in regions, an electrical lead for the induction coil, and a positioning unit, at which the induction coil is arranged in such a way that it can be brought into different relative arrangements with respect to the component placement unit by way of the positioning unit, wherein the electrical lead is guided over a contact, which is formed by contact surfaces that rest against each other and are shifted in position in relation to each other in the contact position when the induction coil is shifted in position by means of the positioning unit.

A laser irradiation apparatus (1) according to an embodiment includes an optical-system module (20) configured to apply laser light (L1) to an object to be irradiated, a shield plate (51) in which a slit (54) is formed, through which the laser light (L1) passes, and a reflected-light receiving component (61) disposed between the optical-system module (20) and the shield plate (51), in which the reflected-light receiving component (61) is able to receive, out of the laser light (L1), reflected light (R1) reflected by the shield plate (51).

A device for determining a focus position of a laser beam in a laser machining system includes an optical element configured to reflect a portion of the laser beam for coupling out a first sub-beam of the laser beam, a spatially resolving sensor to which the first sub-beam can be directed, and an evaluation unit configured to determine a focus position of the laser beam based on an actual diameter of the first sub-beam incident on the spatially resolving sensor, a laser beam power, and calibration data.

A rotatable connector for rotatable mounting an optical fiber, comprising a hollow shaft for introducing and fixing an optical fiber mechanically to the hollow shaft, furthermore comprising one or more bearings, whereby, in the case of a two bearing construction, the interior of a first bearing is fixed onto the hollow shaft, as well as the interior of a second bearing being fixed onto the hollow shaft, whereby the second bearing is spaced apart from the first bearing, the exterior of at least one bearing is in contact with the interior of a hollow stationary part, the latter having a thread, which can be screwed together with the counter thread of a cap or cap nut, which may apply an axial clamping force onto the bearings, when tightened.

A rotatable connector for rotatable mounting an optical fiber, comprising a hollow shaft for introducing and fixing an optical fiber mechanically to the hollow shaft, furthermore comprising one or more bearings, whereby, in the case of a two bearing construction, the interior of a first bearing is fixed onto the hollow shaft, as well as the interior of a second bearing being fixed onto the hollow shaft, whereby the second bearing is spaced apart from the first bearing, the exterior of at least one bearing is in contact with the interior of a hollow stationary part, the latter having a thread, which can be screwed together with the counter thread of a cap or cap nut, which may apply an axial clamping force onto the bearings, when tightened.

A method for forming a three-dimensional article through successive fusion of parts of a metal powder bed is provided, comprising the steps of: distributing a first metal powder layer on a work table inside a build chamber, directing at least one high energy beam from at least one high energy beam source over the work table causing the first metal powder layer to fuse in selected locations, distributing a second metal powder layer on the work table, directing at least one high energy beam over the work table causing the second metal powder layer to fuse in selected locations, introducing a first supplementary gas into the build chamber, which first supplementary gas comprising hydrogen, is capable of reacting chemically with or being absorbed by a finished three-dimensional article, and releasing a predefined concentration of the gas which had reacted chemically with or being absorbed by the finished three dimensional article.

The invention relates to a feeding device (1) for feeding welding filler elements (310) for deposition welding processes, a positioning sleeve (300, 302) for a feeding device (1), a processing unit and a method for deposition welding. In particular, the invention relates to a feeding device (1) for feeding welding filler elements (310), in particular a wire-shaped and/or rod-shaped welding filler element (310), for a deposition welding processes, comprising a receiving unit (100) for receiving at least one welding filler element (310), a guide unit (200), which is arranged and designed to feed the welding filler element (310) to a deposition welding processes, the receiving unit (100) and the guide unit (200) being arranged and designed such that the welding filler element (310) is provided discontinuously to the guide unit (200).