COORDINATE MEASURING MACHINE HAVING A CAMERA
First Claim
1. A method for determining at least one spatial coordinate of a measurement point of an object with a coordinate measuring machine, the method comprisingcapturing at least a first image of the object, the object being positioned in a measuring volume of the coordinate measuring machine,determining edges in the at least first image,determining position and orientation of the object based on the edges,defining, based on the position and orientation, a measurement path for a probe head of the coordinate measuring machine for approaching the measurement point with the probe head, anddriving the probe head along the measurement path.
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Abstract
The present invention pertains to a method for determining at least one spatial coordinate of a measurement point of an object (15) with a coordinate measuring machine (1), the method comprising capturing at least a first image of the object (15), the object being positioned in a measuring volume of the coordinate measuring machine (1), determining edges in the at least first image, defining, based on the determined edges, a measurement path for a probe head (13) of the coordinate measuring machine (1) for approaching the measurement point with the probe head (13), and driving the probe head (13) along the measurement path. The invention furthermore pertains to a coordinate measuring machine (1) for execution of said method.
10 Citations
58 Claims
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1. A method for determining at least one spatial coordinate of a measurement point of an object with a coordinate measuring machine, the method comprising
capturing at least a first image of the object, the object being positioned in a measuring volume of the coordinate measuring machine, determining edges in the at least first image, determining position and orientation of the object based on the edges, defining, based on the position and orientation, a measurement path for a probe head of the coordinate measuring machine for approaching the measurement point with the probe head, and driving the probe head along the measurement path.
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18. A method for determining at least one spatial coordinate of a measurement point of an object with a coordinate measuring machine, the method comprising
providing nominal design data of the object, capturing at least a first image of the object, the object being positioned in a measuring volume of the coordinate measuring machine, determining edges in the at least first image, determining dimensions of the object based on the recognized edges, determining differences between the determined dimensions of the object and the nominal design data of the object, defining, based on the position and orientation, a measurement path for a probe head of the coordinate measuring machine for approaching the measurement point with the probe head, and driving the probe head along the measurement path.
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39. A method for determining at least one spatial coordinate of a measurement point of an object with a coordinate measuring machine, the method comprising
capturing at least a first image and a second image of the object, the object being positioned in a measuring volume of the coordinate measuring machine, the first and second images being taken from different positions, generating a digital model of the object based on image data from the first image and the second image, determining edges in the digital model, defining, based on the determined edges, a measurement path for a probe head of the coordinate measuring machine for approaching the measurement point with the probe head, and driving the probe head along the measurement path.
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40. A coordinate measuring machine for determining at least one spatial coordinate of a measurement point of an object, the coordinate measuring machine comprising
a frame structure comprising a base and a plurality of frame elements, wherein a probe head is attached to one of the frame elements, a drive mechanism comprising at least one motor drive and being adapted to drive the probe relative to the base for approaching a measurement point in a measuring volume of the coordinate measuring machine, an imaging unit comprising a first camera that is adapted to be directed to the measuring volume for providing at least a first image of an object that is positioned in the measuring volume, and a controller comprising a processor and a memory, the controller being adapted to control the drive mechanism by actuating the at least one motor drive and to determine the at least one spatial coordinate as a function of a drive position of the drive mechanism, wherein the imaging unit is adapted to determine edges in the at least first image, and the controller is adapted to control the drive mechanism based on the recognized edges.
Specification