Abstract: A 3D sensor for an apparatus for determining the 3D coordinates of an object comprises in accordance with the invention at least one camera and at least three plane projectors.

Abstract: A method for operating a motion-measuring system of a machine, such as a coordinate-measuring device or a machine tool. An image-recording device arranged on a first part of the machine records at least one recorded image of a second part of the machine. The first part and the second part can be moved in relation to each other. A capturing structure, which is formed by the second part and/or which is arranged on the second part, is captured by the at least one recorded image, and, by using information about an actual appearance of the capturing structure, a speed of the relative motion of the first part and the second part is determined from differences of the at least one recorded image from the actual appearance of the capturing structure.

Abstract: An air bearing for movably bearing at least two elements includes a bearing main body with a first air outflow channel and a second air outflow channel. The first air outflow channel is supplied with air via at least one first air delivery device. The second air outflow channel is supplied with air via at least one second air delivery device. A sensor detects at least one of a bearing stroke, a bearing pressure, and a bearing throughflow, and a controller adjusts the supply of the air to at least one of the first air outflow channel and the second air outflow channel in accordance with the at least one of the bearing stroke, the bearing pressure, and the bearing throughflow.

Abstract: A measuring arrangement is calibrated for determining rotational positions of a rotary device that has a first part and a second part which can be rotated relative to the first part about a rotational axis. Rotational positions of the first part relative to the second part and/or rotational positions of the second part relative to the first part are detected using a plurality of sensors distributed about the rotational axis. A respective measurement signal corresponding to each detected rotational position is generated such that redundant information on the rotational positions of the first part and the second part relative to each other is provided. The redundant information on the rotational position(s) are analyzed such that effects of a translational movement of the first and the second part relative to each other are corrected, the translational movement running transverse to the extension of the rotational axis.

Abstract: A measuring system having a measuring tool which includes a probe body and an optical marker, a camera for recording image data of the measuring tool, and an evaluation and control unit which is configured to evaluate the image data recorded by the camera and use the data to determine spatial position coordinates of the optical marker. The evaluation and control unit is also configured to calculate the deformation of the measuring tool due to external mechanical loading acting on the measuring tool, and to determine spatial position coordinates of the probe body based on the spatial position coordinates of the optical marker and the calculated deformation.

Abstract: A probe system for measuring a measurement object in optical and tactile fashion is provided which includes a tactile sensor. The tactile sensor includes a tactile probe element. The tactile probe element has a sensor surface and is configured to probe the measurement object in a tactile fashion at at least one probing point on the sensor surface. The probe system further includes a microscope camera which includes an illumination device configured to produce an illumination light beam. The microscope camera further includes a microscope optical unit configured to focus the illumination light beam in the probing point and to produce a magnified image of the measurement object in an image plane. The microscope camera also includes an image capture device configured to record the magnified image and is at least partly arranged in the tactile probe element.

Abstract: The disclosure relates to an arrangement and a method for capturing coordinates of an object surface by triangulation. At least two partial light patterns are generated representing a decomposition of a corresponding basic light pattern. The partial light patterns are separately projected onto the object surface, an image of the object surface is captured during the projection of one of the partial light patterns, and components of the total intensity of the captured images are ascertained. A balance of direct and indirect intensity components is established per image and for each pixel under the assumption that the indirect intensity components in all images are equal. A reflection image is established based on the direct and/or indirect intensity components which approximates the image that would be capturable during a projection of the basic light pattern without indirect intensity components. Based on the reflection image, coordinates of the object surface are ascertained.

Abstract: A method for calibrating a rotating device attached to a movable part of a coordinate measuring device having a first part secured to the movable part and a second part rotatable relative to the first part about an axis of rotation of the turning device, on which second part a measuring sensor for measuring workpieces can be attached. The rotating device or a body connected to the second part is moved to a local area of a position determining device by a drive system of the coordinate measuring device, which position measuring device is connected to the coordinate measuring device, by means of at least one sensor of the position determining device. A position of the rotating device or of the body connected to the second part is determined relative to the position determining device, and the rotating device is calibrated in accordance with the determined position.

Abstract: Rotating/pivoting sensor system for a coordinate measuring apparatus is provided. The rotating/pivoting sensor system includes a coupling mechanism with which the rotating/pivoting sensor system can be coupled to a measurement head of a coordinate measuring apparatus, a sensor-holding part which is connected directly or indirectly to the coupling mechanism, a sensor which is mounted rotatably about a first rotation axis on the sensor-holding part and which is pivotable about the first rotation axis in a continuous angle range, an angle-measuring system with which a pivoting angle of the sensor can be determined, a fixing device with which the sensor can be fixed in a pivoting position, and a method for adjusting a rotating/pivoting sensor system in a coordinate measuring apparatus.

Abstract: A measuring system having a measuring tool with a probe body and an optical marker, a camera for recording image data of the measuring tool, and an evaluation and control unit which is configured to evaluate the image data recorded by the camera and use the image data for determining, with the aid of the optical marker, position data of the probe body which contain the spatial position coordinates of the probe body. The evaluation and control unit is further configured to calculate speed data and/or acceleration data of the probe body from the position data of the probe body and to determine, on the basis of the speed data and/or acceleration data of the probe body, whether or not probing is present in which the probe body makes contact with a measurement object for the purpose of capturing a measuring point.

Abstract: A computer-assisted method for determining dimensional properties of a measurement object using a coordinate measuring machine. An image representation of the measurement object is shown to a user and the user selects a first geometric element of the measurement object, resulting in the display of eligible test features for the selected first geometric element. The eligible test features are automatically determined from a plurality of typical test features stored in a database, by the selected first geometric element being assigned to one of a plurality of predefined measurement elements stored in the database. A defined measurement sequence is generated in a computer-assisted manner based on the test feature selected by the user. Individual measured values are recorded on the first geometric element using the defined measurement sequence.

Abstract: A method of producing a workpiece by using additive manufacturing techniques includes obtaining computer-aided design data representing the workpiece in multiple layers. The method includes providing build platforms and layer tools. Each layer tool is moveable relative to a respective build platform and configured to generate or solidify a material layer on the respective build platform. The method includes producing a first defined material layer of the workpiece on a first build platform by controlling a first layer tool according to a first layer definition. The method includes transferring the first defined material layer from the first build platform to a second build platform and measuring the first defined material layer using a first measuring head to measure individual characteristics. The method includes producing further material layers of the workpiece by controlling a second layer tool in accordance with further layer definitions as a function of the measured individual characteristics.

Abstract: The present invention relates to a method for ascertaining a focus image distance of an optical sensor, which is provided with a lens, of a coordinate-measuring machine onto a workpiece to be measured, wherein the optical sensor and the workpiece are movable relative to one another in a Z direction such that a distance in the Z direction between the workpiece and the optical sensor is variable. The present invention furthermore relates to a corresponding coordinate-measuring machine and to a computer program product.

Abstract: A positioning apparatus for positioning a tactile or optical roughness sensor, a probe or some other measuring instrument with respect to a workpiece can be secured to a movement device of a coordinate measuring machine. The positioning apparatus has a drive that produces a relative movement between two parts of the positioning apparatus, and an inhibiting device, which inhibits the relative movement between the two parts. For this purpose, the inhibiting device has a first friction element and a second friction element each having unlubricated friction surfaces. The friction surfaces are pressed against one another with a normal force that is not variable during the operation of the positioning apparatus. A coefficient of sliding friction that is less than 0.15 acts between the friction surfaces in the case of dryness and without lubrication. Typically, the inhibiting device is arranged in a flexspline of a strain wave gearing.

Abstract: The present invention relates to a method for single-point probing of a workpiece by means of a sensor, in particular a tactile sensor, of a coordinate measuring machine, comprising the steps of providing a variable at least indirectly representing a required accuracy of the single-point probing, providing a parameter data set, wherein the parameter data set has prescriptions for regulating and/or evaluating the single-point probing with the required accuracy, and carrying out the single-point probing of the workpiece, wherein the coordinate measuring machine is regulated on the basis of the provided parameter data set and/or an evaluation is carried out on the basis of the provided parameter data set. Furthermore, a coordinate measuring machine for single-point probing of a workpiece is proposed.

Abstract: A method for determining a force acting on a rotational device transverse to an axis of rotation of a rotor of the rotational device. The rotational device has a measuring system comprising a measurement body and detection devices for detecting a relative position of the detection device and the measurement body. The method comprises the following steps: producing a force which acts on the rotational device transverse to the axis of rotation of the rotor in a set rotational position, wherein the force causes a deflection of the rotor; determining the deflection of the rotor and/or a position error of the rotor in the set rotational position of the rotor from the relative position of the detection devices and the measurement body; and determining the force in the set rotational position of the rotor using a predetermined relationship between the force and the deflection and/or position error.

Abstract: A probing element for measuring at least one measurement object is provided. The probing element includes at least one first optical sensor configured to generate at least one first sensor signal depending on a fine shape of at least one surface of the measurement object, at least one second sensor configured to generate at least one second sensor signal depending on at least one of a coarse shape of the measurement object, and a distance to the measurement object. The at least one first optical sensor has a first measurement region and the at least one second sensor has a second measurement region. The at least one first optical sensor is at least partly integrated in the at least one second sensor to permit the first measurement region and the second measurement region to at least partly overlap.

Abstract: A test body is provided for determining one or more rotation errors of a rotating apparatus with respect to one or more degrees of freedom of movement, in which a real rotating movement of the rotating apparatus differs from an ideal rotating movement. The test body includes a holder which, together with a part of the rotating apparatus, can be rotated about an axis of rotation. The holder can be configured to arrange or fasten the test body with respect to the axis of rotation about which the test body can be rotated for the purpose of determining the rotation error(s). One or more test elements are rigidly connected to the holder or are formed on the holder, and each of the test elements is used to determine a rotation error with respect to one or more of the degrees of freedom of movement.

Abstract: A probe head for a coordinate measuring machine has a first probe head part with an interface, for coupling the probe head to the coordinate measuring machine. A second probe head part is coupled to the first probe head part and is rotatable relative to the first probe head part about a first axis. A third probe head part is coupled to the second probe head part and is pivotable relative to the second probe head part about a second axis. The first and second axes lie askew in relation to each other. A first actuator pivots the third probe head part about the second axis via a push rod coupled to the third probe head part at a lateral distance from the second axis. The first actuator moves the push rod in a longitudinal direction to pivot the third probe head part relative to the second probe head part.

Abstract: A method for correcting an angular deviation between a real angle and an ideal angle between motion axes of a coordinate measuring device. The angular deviation depends on position, temperature, and/or loading mass. Values of a position-dependent angular deviation for partial measurement ranges of the coordinate measuring device are determined, and/or a difference between the angular deviation in a partial measurement range and a total measurement range, and the position-dependent angular deviation is corrected by using these values. Values of the temperature-dependent angular deviation for at least two different temperatures are determined and the deviation is corrected based on these.