Hexagon Metrology Gmbh

Hexagon Metrology Ab

Richard MacManus

Bruce R Pease

A method for determining probe tip diameters with improved accuracy and reliability that includes performing a routine for determining probe tip diameter multiple times with the arm of the coordinate measurement machine in different machine positions. Diameter values associated with each of the calibration routines may be combined in a manner that provides more accurate diameter measurements.

Method and apparatus for probe tip diameter calibration

A coordinate measuring machine compensates for hysteresis error caused by friction at the non-driven end of the bridge. The bridge may have a single drive and/or a single scale. The methods, systems, and apparatuses compensate for errors in the x-direction and/or errors in the y-direction caused by rotation of the bridge. Some embodiments compensate for hysteresis errors in the x-direction caused by a vertically-movable ram.

Hysteresis compensation in a coordinate measurement machine

A single-scale, single-drive coordinate measuring machine that compensates for hysteresis error caused by friction at the non-driven end of the bridge. The coordinate measuring machine is calibrated to estimate hysteresis effects at one or more distances from the scale. Measurements of workpieces are adjusted based on the calibration data and the distances of the carriage from the scale at the point of the measurements. The scale and the drive system may be positioned on opposite guideways.

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Narragansett, RI, United States of America

Richard MacManus