Abstract: 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.

Abstract: The invention provides a machine tool (100) having a work table (105) for mounting at least one workpiece (105A), a laser head (101) having a powder nozzle (106) for applying a material to the workpiece and for welding the material to the workpiece (105A), a laser head positioning device for positioning the laser head with respect to the workpiece in order to machine the workpiece (105A) by application and welding of the applied material, an inert gas device (108), fillable with inert gas, for machining the workpiece (105A) by way of the laser head (101) under an inert gas atmosphere, and a positioning device for moving and positioning the inert gas device (108) on the work table (105), said machine tool (100) allowing flexible machining in the scope of subtractive and additive steps of machining a workpiece on a machine tool.

Abstract: A deposition welding process monitoring device that includes an optical detector (10), a conversion unit (70) and an evaluation unit (60) with equipment (60a) configured to determine a monitoring region (61a) of an image (61), equipment (60b) configured to repeatedly detect a surface region (61b) of the monitoring region (61a) in which a temperature-dependent intensity distribution exceeds a specified minimum value (62), equipment (60c) configured to detect a time period (61c) during which the detected surface region (61b) in which the temperature-dependent intensity distribution exceeds the specified minimum value (62) is greater than a specified limit value (63), and equipment (60d) configured to discontinue the deposition welding process if the time period (61c), during which the detected surface region (61b) in which the temperature-dependent intensity distribution is greater than the specified limit value (63), is greater than a specified time value (64).

Abstract: The present invention relates to a method for reducing or completely closing an opening of an inner contour 2 of a workpiece by means of a material melted by a laser deposition welding device 7, comprising the following steps: providing a workpiece 1 with an inner contour 2 having an opening defined by an edge section 11, forming a plurality of base webs 41 from molten material by laser deposition welding by starting at the edge section 11 of the inner contour 2 of the workpiece in such a way that the formed base webs 41 protrude from the edge section 11 at a predetermined angle, connecting adjacent base webs 41 by forming connecting webs 42 from molten material by laser deposition welding in such a way that a support structure 4 which comprises base webs 41 and connecting webs 42 is formed, forming a cover layer 5 of molten material connected to the support structure 4 in such a way that the opening of the inner contour 2 is reduced or completely closed.

Abstract: A method for machining at least one workpiece surface to apply a texture pattern to at least one section of the workpiece surface using a laser, based on image data specifying an image of the texture pattern applied to the at least one section of the workpiece surface and model data specifying a three-dimensional geometry of a surface form corresponding to the at least one section of the workpiece surface. Control data and segment data are generated based on the image and model data. The control data specify one or more segment sequences for each track line. Each segment sequence has track segments where the laser guides the texture pattern application to the at least one section of the workpiece surface; wherein the track segments of a segment sequence include one or more laser track segments where the laser travels in the switched-on state at a constant machining setpoint speed.

Abstract: An optical module for a machine for machining workpieces and/or for producing molded bodies by way of location-selective solidification of material powder into contiguous regions by a laser beam includes a housing for releasably fastening the optical module to the machine and a collimation optics changer releasably arranged in the housing, having at least two collimation optics which can be moved into a beam path of the laser beam for collimating the laser beam. The collimation optics changer has a mechanism for automatically changing the collimation optics.

Abstract: A machine for machining workpieces and/or for producing molded bodies by location-selective solidification of material powder to form connected regions by means of a focused laser beam, including: a process chamber which can be closed by a process chamber door and which encloses a process space, a material powder container cabinet, which can be closed by a door, for storing material powder, and a suction system. The suction system has a fan for generating an air flow, a first suction apparatus fluidically connected to the fan by a first waste air duct to suction particles out of the process space, and a second suction apparatus fluidically connected to the fan by a second waste air duct to suction particles out of the material powder container cabinet. The first suction apparatus has means for controlling its suction power and/or the second suction apparatus has means for controlling its suction power.

Abstract: The invention relates to a method for machining a multi-layer workpiece blank (3) by means of a laser beam, comprising the following steps: specifying a machining program for machining the workpiece blank according to an ablation geometry in order to generate a desired edge and/or surface geometry (13) using a laser machining device; tensioning the workpiece blank in the laser machining device and positioning the workpiece holder in a measuring position; measuring a thickness of at least one of the layers of the multi-layer workpiece blank (3); modifying the machining program in order to machine the multi-layer workpiece blank (3) according to the measured layer thickness with an consistent ablation geometry; and machining the tensioned workpiece blank (3) using the modified machining program via a laser of the laser machining device in order to generate the desired edge and/or surface geometry (13) with a cutting edge (12). The invention also relates to a correspondingly configured device.

Abstract: The invention relates to a spindle device (100), comprising: a tool holder (14) for holding a tool or a tool interface; a spindle drive comprising a spindle rotor (130) for rotationally driving the tool holder (14); an electrical load (160), which is arranged on the side of the spindle rotor (130) facing the tool holder (14); and a coil unit (140) for supplying electrical energy to the electrical load (160); wherein the coil unit (140) is arranged on the side of the spindle rotor (130) facing away from the tool holder (14).

Abstract: A method for determining a vibration amplitude of a tool, includes the steps of: generating a light beam of a light barrier with a transmitter for generating the light beam and a receiver for detecting a light intensity of the light beam; generating a receiver signal on the basis of a light intensity of the light beam that is detected by the receiver of the light barrier; positioning a tool tip of the tool in the light beam; causing the tool to vibrate; determining the vibration amplitude of the tool from a modulation of the receiver signal brought about by the vibration of the tool.

Abstract: The present invention relates to a device for generating an ultrasonic vibration of a tool used for the ultrasonic machining of a workpiece and for measuring ultrasonic vibration parameters of the ultrasonic vibration of the tool having a tool holder for receiving the tool, an ultrasonic transducer in the tool holder for generating the ultrasonic vibration of the tool, a sensor mechanism in the tool holder for producing a sensor signal on the basis of the ultrasonic vibration of the tool, and a sensor signal evaluation device for evaluating the sensor signal.

Abstract: A machine for machining workpieces and/or for producing molded bodies by location-selective solidification of material powder to form connected regions by means of a focused laser beam, including: a process chamber which can be closed by a process chamber door and which encloses a process space, a material powder container cabinet, which can be closed by a door, for storing material powder, and a suction system. The suction system has a fan for generating an air flow, a first suction apparatus fluidically connected to the fan by a first waste air duct to suction particles out of the process space, and a second suction apparatus fluidically connected to the fan by a second waste air duct to suction particles out of the material powder container cabinet. The first suction apparatus has means for controlling its suction power and/or the second suction apparatus has means for controlling its suction power.

Abstract: 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.

Abstract: An optical module for a machine for machining workpieces and/or for producing molded bodies by way of location-selective solidification of material powder into contiguous regions by a laser beam includes a housing for releasably fastening the optical module to the machine and a collimation optics changer releasably arranged in the housing, having at least two collimation optics which can be moved into a beam path of the laser beam for collimating the laser beam. The collimation optics changer has a mechanism for automatically changing the collimation optics.

Abstract: Methods for measuring a resonance frequency of a tool set in ultrasonic vibration during the machining of a workpiece, involving radiating a working signal with a working frequency into a tool holder comprising a tool by a generator to produce the ultrasonic vibration of the tool; after the start of the machining of the workpiece, radiating a test signal with a test frequency varying by the working frequency and a lower power than the working signal power into the tool holder by the generator; generating a sensor signal from the ultrasonic vibration of the tool by a sensor apparatus arranged in the tool holder; reading out the sensor signal by a read-out apparatus; splitting the sensor signal into a frequency spectrum involving a main frequency and an auxiliary frequency by an analytical apparatus; determining the main frequency from the working frequency and the auxiliary frequency from the resonance frequency.

Abstract: A method for processing a workpiece on a numerically controlled machine tool by a tool includes the steps of: controlling a relative movement of the tool relative to the workpiece for processing the workpiece, producing an ultrasonic vibration of the tool by an ultrasonic generator, detecting at least one sensor signal outputted from the ultrasonic generator and identifying a change in the material at the workpiece while controlling the relative movement of the tool relative to the workpiece on the basis of the at least one sensor signal outputted from the ultrasonic generator.

Abstract: The present invention relates to a coupling system for use at a spindle apparatus of a machine tool, comprising an energy transmission unit with a transmitter coil unit for the contact-free transmission of electrical energy to a receiver coil unit of a tool interface unit with an electrical load and a tool interface portion for accommodation in a tool support of a work spindle of the spindle apparatus, and a coupling interface unit having an interface body element attachable to the spindle apparatus and a second coupling element which is configured to be coupled to a first coupling element of the energy transmission unit by means of a releasable connection.

Abstract: The invention relates to a machine tool (10) comprising a machine controller (19), a machine frame (11), a work table (13), a tool holder (14), preferably of a standardized design, multiple translational and/or rotational axes (12a, 12b) for adjusting the relative position of the work table (13) and the work holder (14), a tool magazine (16) for one or more material-removing, in particular machining tools (15), a tool-change mechanism for automatically transporting tools between the tool holder (14) and the tool magazine (16), a deposit-welding head (20) that can be inserted into the tool holder (14) and a storage device (25) for storing the deposit-welding head outside the tool holder (14).

Abstract: A method for machining at least one workpiece surface to apply a texture pattern to at least one section of the workpiece surface using a laser, based on image data specifying an image of the texture pattern applied to the at least one section of the workpiece surface and model data specifying a three-dimensional geometry of a surface form corresponding to the at least one section of the workpiece surface. Control data and segment data are generated based on the image and model data. The control data specify one or more segment sequences for each track line. Each segment sequence has track segments where the laser guides the texture pattern application to the at least one section of the workpiece surface; wherein the track segments of a segment sequence include one or more laser track segments where the laser travels in the switched-on state at a constant machining setpoint speed.

Abstract: A machine tool includes a frame with two opposite frame sections, a number of leg elements arranged on the frame, and a first carriage having a first linear axis. The first carriage is guided on the two opposite sections of the frame and is displaceable in a first direction. A second carriage of a second linear axis is guided on the first carriage and is displaceable in a second direction A tower element has a third linear axis, which is retained on the second carriage. A machining element is retained on the tower element and is displaceable in a third direction, and a tool spindle is arranged on the machining element for receiving a tool.