Carl-Zeiss-Stiftung

Bernd Czepan

Bernd Georgi

Heinz Peter

Thomas Guth

The invention relates to a coordinate measurement device comprising a stylus ( ) which can be displaced in the coordinate directions (x, y, z) for sampling a workpiece ( ), a mechanism ( ) with drive units by means of which the stylus can be moved and a control unit ( ) for controlling the mechanism. To define the points (pk ) to be sampled on the workpiece, parameters of geometric elements (k k e e ) and parameters of the points (pk pk pe pe ) to be sampled on the corresponding geometric elements are memorized. To be able to modify the measurement sequence of such a coordinate measurement device more easily, the invention provides for the parameters of the points (pk ) to be sampled on a particular geometric element to be memorized separately in relation to a coordinate system (xk yk zk ) which is specific to the corresponding geornetric element (k ).

Coordinate measurement device and method for controlling same

The invention is directed to a method for automatically generating travel paths to the next geometric elements to be measured when there is a collision of the probe 25 or the probe head 10, for example, with the workpiece 22. The method utilizes safety-reference surfaces (S1 to S5) placed in the form of an enclosing parallelepiped about the workpiece 22. The shortest collision-free connecting paths (P1-P2-P3) from one geometric element to the next are computed on these safety-reference surfaces.

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Heidenheim, Germany

Bernd Czepan