摘要:
Um mit hoher Präzision und Flexibilität Objekte mit einem Koordinatenmessgerät messen zu können, werden folgende Verfahrensschritte vorgeschlagen: grobes Ausrichten des Bildverarbeitungssensors auf zu messende Position des Objektes, wobei beim Ausrichten des Bildverarbeitungssensors dieser mit einer Beschleunigung a 1 > 0 mm/s 2 bewegt wird, und Abbremsen des Bildverarbeitungssensors und Messen der Position bei bewegtem Bildverarbeitungssensor bei einer Beschleunigung a 2 mit 0 mm/s 2 ≤ a 2 1 .
摘要:
Die Erfindung bezieht sich auf ein Koordinatenmessgerät (110) zum Messen eines Objektes (3) mit einer Röntgensensorik umfassend eine Röntgenstrahlenquelle (10) und zumindest einen die Röntgenstrahlen erfassenden Röntgenstrahlensensor (7), die in x-, y- und/oder z-Richtung des Koordinatenmessgerätes relativ zu dem Objekt positionierbar ist. Um auch Messobjekte größerer Ausdehnung problemlos messen zu können, wird vorgeschlagen, dass die Röntgensensorik (7, 10) in dem Koordinatenmessgerät (10) positionierbar ist.
摘要:
The invention relates to a method for measuring a solid body (11), using a first measuring method (computed tomography method) X-raying the solid body, combined with a second measuring method for measuring at least one surface of the solid body (11). The aim of the invention is to increase utilization of the two measuring methods and to optimize the calculation of the results. According to the invention, measured values obtained by the second method are used to associate points on the surface of the solid body with respective local segmentation threshold values for the evaluation of the data obtained by the first measuring method. These threshold values can be used to determine additional local segmentation threshold values in the vicinity of the points.
摘要:
The invention relates to a method and device for determining the structures of an object by means of a shape-gauge element starting from the stylus extension of an calliper associated to a co-ordinate measuring instrument, which is brought into contact with the object and, afterwards, the spatial position of the a shape-gauge element or of a target mark directly associated therewith is determined by means of an optical sensor. The aim of said invention is to determine any structures with a high measuring accuracy, which requires an accurate determination of the shape-gauge element position to be brought into contact with the object. For this purpose, the invention is characterised in that the two-dimensional position of the shape-gauge element and/or of the target mark is determined by means of a two-dimensional optical position sensors associated with each other on the position point of view and the spatial (3-dimensional) position of the shape-gauge element is calculated on the base of the two-dimensional position thereof.
摘要:
The invention relates to a method for determining the contours of an object during imaging analysis methods, according to which the object is scanned from several projection angles and a three-dimensional representation of the analysis object is reconstructed from the scanned values. Volume data, which represents the analysis object, is obtained in said imaging analysis, a threshold value for the reconstruction values is defined to determine the position of the contour of the three-dimensional object representation and the position of the contour points is determined. A first threshold value (G1) of the reconstruction values is defined and to determine the position of a contour point a respective first contour point (K1) of the analysis object is determined. A profile line, which stretches from the exterior of the analysis object into the latter and which runs through the first contour point, is also defined and reference points are assigned to said line. The corresponding reconstruction values are determined along the profile line and a new local threshold value (G1) of the scanning values is determined from the gradient of the latter along and/or adjacent to the profile line in the vicinity of the first contour point. The first contour point on the profile line is then shifted to a second contour point (K1) at the site of the local threshold value.
摘要:
The invention relates to a method for measuring the geometry of an object (12), particularly a work piece or a tool, by means of a co-ordination measuring device (10). The geometry of an object (12) is recorded by an optical sensor (14), for example a camera, and is represented in the form of an image content (32). Geometric structures (60 70) in the image content adapted to the measurement of the object (12), such as geometric elements or contours, are selected and subsequently evaluated. The aim of the invention is to enable even non-experienced operators to carry out a measurement in a fast and fault-free manner. When the image content (32) is changed, it is automatically analysed in relation to the geometric structures (60-70) adapted to the object measurement (12), and the adapted structures are marked and prepared for subsequent evaluation.
摘要:
The invention relates to a method for generating a measuring program for a co-ordinate measuring device, especially a multisensor co-ordinate measuring device. A scheduled data set, such as a CAD data set, is inputted into an object to be measured in a data processing device. In order to automate the verification process for the object to be measured, the scheduled data set is automatically processed as a check plan so as to generate the measuring program whereby predefined measures and/or geometric properties are automatically processed according to predefined rules stored in the data processing device, and the measuring program thus generated is used to measure the object or a corresponding object by means of the coordinate measuring device.
摘要:
The inventive co-ordinate-measuring instrument is provided with a translumination device which comprises at least one illumination body (14) and an image processing sensor system (12) which is provided with a lens measuring along an optical axis (30). According to said invention and in order to perform high-accuracy measurement without necessity of placing and removing the illumination body and the sensor image processing system, said illumination body (14) is constructed in such a way that it emits diffused light and a filter (16) which is embodied, for example in the form of a comb, provided with through holes and arranged between said illumination body and a measured object (10) is transparent for beams forming with the axis (30) an angle which is less than a defined limiting angle alpha.
摘要:
The invention relates to a bearing (32) for a coordinate measuring instrument comprising a slide (36), which can be axially displaced in relation to the fixing device (34) and which can be supported opposite a fixing device by means of at least one air bearing (38, 40). In order to be able to utilize the bearing for all axes of the coordinate measuring instrument while simultaneously using outer surfaces of the slide as mounting surfaces for sensors, the invention provides that a force that works counter to the air bearing can be generated by a magnetic field (42, 44).
摘要:
Die Erfindung bezieht sich auf eine Vorrichtung zum Messen eines Objektes bzw. dessen Oberfläche mittels eines Koordinatenmessegerätes umfassend ein taktil ermittelndes mit dem Objekt wechselwirkendes Antastformelement sowie Lage des Antastformelementes oder einer diesem unmittelbar zugeordneten Zielmarke umfassende optische Sensorik. Um eine dreidimensionale Lagebestimmung des Antastformelementes bei Minimierung von Messfehlern zu ermöglichen, wird vorgeschlagen, dass die optische Sensorik (30) einen Abstandssensor (34) und einen Bildverarbeitungssensor (32) umfasst, dass der Abstandssensor und der Bildverarbeitungssensor einen gemeinsamen optischen Strahlengang aufweisen, dass mittels des Abstandssensors und des Bildverarbeitungssensors räumliche Lage des Antastformelementes unmittelbar oder mittels der Zielmarke (40) bestimmbar ist und dass mittels des Abstandssensors und/oder des Bildverarbeitungssensors unmittelbar Oberfläche des Objektes messbar ist.