Method for determining position within the measuring volume...

Details Method for determining position within the measuring volume... Method for determining position within the measuring volume...

G - Physics

08

C

354/25, 340/135.

G08C 21/00 (2006.01) G01B 7/008 (2006.01) G01B 21/04 (2006.01)

Patent

CA 1310092

METHOD FOR DETECTING POSITION WITHIN THE MEASURING VOLUME OF A COORDINATE MEASURING MACHINE AND THE LIKE AND SYSTEM THEREFOR ABSTRACT: Axis correction or machine characteristic data is stored (108) in memory (110) within a control or measurement processor (36) of a CMM (10) (FIGURE 8). The axis correction data includes error data representing 21 different geometry errors (FIGURES 4A through 4C) of the CMM. As position information is required, the measurement processor captures the actual position signal from each machine axis sensor and uses this position signal to locate (112) a set of the axis correction data which describes the machine characteristics at that position. The measurement processor then mathematically combines (114) (FIGURE 9) the position signal with the subset of axis correction data to obtain a corrected position signal having a corrected set of coordinate values which describe the probe position in a true Cartesian coordinate system.

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