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.

Abstract: 3D coordinates at first selected measurement points of a measurement object are determined using a first measurement arrangement. Surface normals at second selected measurement points of the measurement object are determined using a second measurement arrangement. Using the 3D coordinates and the surface normals, at least one of dimensional or geometric characteristics of the measurement object are determined. The second measurement arrangement includes a number of light sources and a first camera which is directed to the measurement object. A calibration data set represents individual direction dependent radiation patterns of the light sources. The surface normals are determined using the calibration data set and the 3D coordinates at the first selected measurement points.

Abstract: A method for monitoring a coordinate-measuring machine (CMM), having a monitoring device which is set up to monitor at least one location region of the CMM, in which a movable part of the CMM is movable, wherein the method includes: monitoring the at least one location region with the monitoring device, wherein the monitored location region is variable in terms of its size, ascertaining the position of the movable part of the CMM relative to a fixed position associated with the location region and/or ascertaining the movement of the movable part relative to the fixed position, and setting or varying the size of the monitored location region in dependence on the position and/or the movement of the movable part relative to the fixed position.

Abstract: The present invention relates to a coordinate measuring machine with a measuring system for measuring a workpiece, a carrier structure for carrying the measuring system and a base plate for supporting the workpiece. The carrier structure is movably guided in at least one direction on the base plate. The coordinate measuring machine also has a first support system with at least three supports for supporting the base plate, a second support system and a control device for controlling the second support system dependent on a force application to the first support system. The present invention also relates to a method for compensating for large workpiece masses on a coordinate measuring machine.

Abstract: A linear guide for a coordinate measuring machine. The linear guide comprises at least one plate-shaped main body and at least one guide rail. The plate-shaped main body has a material with a first coefficient of thermal expansion. The at least one guide rail has a material with a second coefficient of thermal expansion, which differs from the first coefficient of thermal expansion. The guide rail is connected to the plate-shaped main body, and arranged in a neutral axis of the plate-shaped main body.

Abstract: An arrangement measures coordinates of a workpiece and/or machines the workpiece. The arrangement has a first part and a second part that can be moved relative to the first part. The relative mobility of the first and second parts is specified in addition to a possible mobility of a probe that is optionally additionally fixed to the arrangement. The mobility of the probe is specified by a deflection of the probe from a neutral position during a mechanical probing of the workpiece for the purpose of measuring the coordinates. A measuring body is arranged on the first or second part, and at least one sensor is arranged on the other part, i.e. on the second or first part. The sensor generates a measurement signal corresponding to a position of the measuring body and thus corresponding to the relative position of the first and second part.

Abstract: A method and an apparatus for determining a plurality of spatial coordinates on a measurement object using a working head having an image sensor for recording images of the measurement object. A first image of a first feature of the object with the working head in a first working position is recorded. First spatial coordinates representing a spatial position of the first feature are determined using first position information of the working head supplied by an encoder arrangement. The working head is then moved relative to the object to a second working position, where a second image of the object is recorded. Using the first and the second images, second position information which represents a spatial offset of the working head relative to the object is determined. Spatial coordinates for a second feature of the measurement object are determined on the basis of the second position information.

Abstract: The invention relates to a method for identifying geometric deviations of a real motion guide from an ideal motion guide in a coordinate-measuring machine having a sensor for measuring a workpiece, or in a machine tool having a tool for processing a workpiece, wherein the coordinate-measuring machine or the machine tool has a movable part which is guided along the motion guide and by the motion guide.

Abstract: A measuring system for dimensionally measuring an object, comprising an object carrier, a plurality of optical markers, which are arranged at the object carrier and/or the object, and a first sensor for a tactile, optical and/or tomographic scanning of the object. The first sensor generates a first measuring signal. A second optical sensor captures a spatial orientation and position of the object with the help of optical markers. The second sensor generates a second measuring signal that contains information relating to the position and spatial orientation of the optical markers. The second sensor is connected to the first sensor via a mechanically rigid connection. An evaluation unit is configured to determine, from the second measuring signal, the position and spatial orientation of the object relative to the first sensor and to determine, from the first measuring signal, a geometry of the object.

Abstract: A method for calibrating an optical arrangement for determining dimensional properties of a measurement object and a coordinate measuring machine implementing the method are disclosed. The optical arrangement has a camera and a projector for projecting a first periodic pattern onto a projection area. The optical arrangement is moveable relative to a workpiece table along a first axis. A matte surface is arranged on the workpiece table at a first position relative to the optical arrangement. A second periodic pattern, which is separate from the first periodic pattern, is provided and shifted on the matte surface. Images of the second pattern are recorded using the camera and at least one distortion aberration of the camera is determined using the second periodic pattern.

Abstract: A lens device for an illumination assembly. The lens device has light-entry and light-exit surfaces and comprises at least one ring region. Each ring region extends along a circumferential direction about a central axis of the lens device, and comprises a plurality of area segments. Each area segment forms a circular arc portion of a respective ring region and comprises a first end in the circumferential direction and a second end opposite to the first end in the circumferential direction. At the first end, the light-exit surface is inclined in the direction of the central axis by an arbitrary first angle in relation to the light-entry surface, and at the second end, the light-exit surface is inclined in the direction of the central axis by an arbitrary second angle in relation to the light-entry surface differing from the first angle.

Abstract: A method for automatically receiving a sensor head of a coordinate measuring machine. The sensor head comprises a first changing interface for coupling the sensor head with a carrier structure of the coordinate measuring machine, and a second changing interface for coupling a cable element with the carrier structure. The second changing interface of the sensor head is arranged on an end of the cable element distal to the sensor head, and is spatially separated from the first changing interface. The sensor head is initially provided in a magazine location of the coordinate measuring machine. The sensor head is received with the first changing interface in a first receiver of the magazine location, and the second changing interface is received in a second receiver of the magazine location.

Abstract: A method for edge determination of a measurement object in optical metrology, such as performed by an optical coordinate measuring machine. The method includes the steps of capturing first image data of the measurement object under reflected-light illumination, capturing second image data of the measurement object under transmitted-light illumination, and determining a position of an edge of the measurement object based on an evaluation in which both the first and the second image data are used.

Abstract: A device calibrates a coordinate-measuring device. The device contains at least one calibrating element and the calibrating element has a plurality of surface sections. The surface sections that butt against each other form an edge. The device further contains at least one retaining device and the calibrating element is arranged on a surface section of the retaining device. The surface sections of the calibrating element are arranged in relation to each other in such a manner that the calibration element has at least one edge that does not overlap any other edge of the calibrating element when the edges are projected into a common projection plane. The projection plane is oriented orthogonally to a normal vector of the surface section of the retaining device.

Abstract: Coordinate measuring machine, comprising an optical sensor for capturing image data of a workpiece. The optical sensor comprises a lens, which defines an optical axis, and an illumination device for illuminating the workpiece. The illumination device comprises a diffusely radiating luminous body and an optical filter having a plurality of separate light passages. Light emitted by the luminous body enters the filter on an underside thereof, passes through the light passages and emerges again from the filter on an opposite top side thereof. Each of the light passages transmits only light rays that form an angle smaller than a predefined limiting angle with a longitudinal axis of the respective light passage. The lens and the filter are inclined relative to one another in such a way that a normal vector aligned perpendicularly to the top side of the filter forms an inclination angle other than 0° with the optical axis.

Abstract: A linear guide includes an elongate guide body and a bearing cage, on the inner sides of which fluid pressure bearings are provided. The bearing cage moves along the guide body via the bearings. The bearing cage includes at least three interconnected plates. The plates each have an inner surface facing the guide body, an outer surface facing away from the guide body and side surfaces between the inner and the outer surface. Each plate is connected to a first other plate in a first end region and connected to a second other plate in an opposite second end region. For each of the plates: the first other plate, with its inner surface, abuts against a side surface of the considered plate, while the considered plate, with its inner surface, abuts against a side surface of the second other plate in the second end region of the considered plate.

Abstract: A system and a method for reliably monitoring a parameter, in particular a moment of inertia, required for determining a kinetic energy of an object that can be measured by means of a sensor of a coordinate measuring machine. The object is moved between various positions, with the object preferably being at least briefly at rest in each of the approach positions.

Abstract: A method for performing measurements using a test element, comprising: arranging a test element in a measurement region of a coordinate-measuring apparatus, wherein the test element is arranged on a base of the coordinate-measuring apparatus or at/on a first, rotatable part of a rotating apparatus arranged within the measurement region, and wherein the test element is arranged in a first pose relative to the base or to the first part. performing a measurement by incorporating the test element in the first pose, arranging the test element with the movement device in a second pose on the base or on the first part using the movement device, performing a measurement by incorporating the test element in the second pose.

Abstract: A method for operating a confocal white light sensor on a coordinate measuring machine including a sensor carrier configured to couple a coordinate measurement sensor that is movable in a straight movement direction relative to a base of the coordinate measuring machine is provided. A confocal white light sensor is coupled to the sensor carrier and oriented in the straight movement direction toward a reference body. The sensor carrier and the reference body are moved relative to one another in the straight movement direction, and a measurement signal representing a distance between the confocal white light sensor and the reference body is generated at different movement positions. Information relating to a relationship between measurement signals of the confocal white light sensor and an actual distance of the white light sensor to a measurement object is obtained and a measurement value of the object distance is generated.