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: 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: A method and an arrangement for producing a workpiece using additive manufacturing techniques involve in-process measurement in order to determine individual characteristics of one or more workpiece layers. In particular, dimensional and/or geometrical characteristics of a workpiece layer are measured before the next workpiece layer is produced. Advantageously, the measurement results are fed back into the production process in order to increase accuracy and precision of the production process.

Abstract: A method for reducing errors in a rotating device permitting rotation of a workpiece about a rotational axis during the determination of co-ordinates or during the machining of the workpiece. The workpiece is rotated about the rotational axis and first and second measuring signals of a first and a second course of the workpiece surface are generated by the coordinate measuring device while the device is positioned at different first and second circumferential positions of the rotational axis. The first and the second measuring signals are used for separating redundant surface information and error information contained in the signals. The redundant surface information relates to the workpiece surface revolving around the rotational axis and the error information relates to errors in the rotating device resulting from deviations between actual positions and orientations of the rotational axis and corresponding ideal positions and orientations.

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: A method, a computer program product and a measuring system are provided for operating a triangulation laser scanner to identify surface properties of a workpiece. The scanner has a CMOS sensor chip, an imaging optical unit, and a laser line light source configured to generate a laser line on the workpiece in compliance with a Scheimpflug condition. Data generated on the sensor chip is reduced to an amount of data only including actual lateral positions of image points of the laser line and a quality criterion for each of the image points. The quality criterion is a measure of an intensity distribution along a direction transverse to a local direction of extent of the image points of the laser line on the sensor chip and the reduced amount of data is analyzed with respect to the quality criterion regarding a presence of barcode and/or detection code information and/or texture information.

Abstract: A measuring device for an optical measuring system, comprising a rigid body which comprises a probe body or a tool and on which a first optical marker is arranged. The measuring device further comprises a holding part for holding the measuring device by hand or for clamping the measuring device in a machine. At least a second optical marker is arranged on the holding part. Still further, the measuring device comprises a spring element which connects the rigid body to the holding part.

Abstract: A measuring device for an optical measuring system, comprising a rigid body which comprises a probe body or a tool and on which a first optical marker is arranged. The measuring device further comprises a holding part for holding the measuring device by hand or for clamping the measuring device in a machine. At least a second optical marker is arranged on the holding part. Still further, the measuring device comprises a spring element which connects the rigid body to the holding part.

Abstract: A measuring system having a measuring tool which comprises 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 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 method, a computer program product and a measuring system are provided for operating a triangulation laser scanner to identify surface properties of a workpiece. The scanner has a CMOS sensor chip, an imaging optical unit, and a laser line light source configured to generate a laser line on the workpiece in compliance with a Scheimpflug condition. Data generated on the sensor chip is reduced to an amount of data only including actual lateral positions of image points of the laser line and a quality criterion for each of the image points. The quality criterion is a measure of an intensity distribution along a direction transverse to a local direction of extent of the image points of the laser line on the sensor chip and the reduced amount of data is analyzed with respect to the quality criterion regarding a presence of barcode and/or detection code information and/or texture information.

Abstract: A method for determining one or more errors of a rotational position establishment system is provided. More particularly, a rotary apparatus having first and second parts that rotate relative to one another about a rotation axis of the rotary apparatus is used to determine one or more rotation errors. A rotation position determination system is used to determine rotation position errors from the rotation positions of the rotary apparatus or a change in the rotation position of the rotary apparatus, and from rotation positions of a reference rotary apparatus or a change in the rotation position of the reference rotary apparatus.

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 method and an apparatus for generating positional sensor data of a coordinate measuring device are provided. A sensor generates sensor data points and a trigger signal with a trigger frequency. A sensor data record is generated which includes the sensor data points and a sensor data time. The trigger signal is transmitted to a device for determining a sensor position, a position data record is determined upon or after the reception of the trigger signal, the position data record includes at least one position data point and one position data time, an assignment of position data points to sensor data points is determined depending on the sensor data time and the position data time, and a positional sensor data record is generated which includes at least one sensor data point and a position data point assigned to this sensor data point.

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: 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: 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: 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: The invention relates to a method for reducing errors in a rotating device during the determination of coordinates of a workpiece or during the machining of a workpiece, the rotating device permitting rotational motion of the workpiece about a rotational axis of the rotating device during the determination of the co-ordinates or during the machining of the workpiece.