Patent ID: 7188432
Filing Date: 2007-03-13
Classification: G01B

Abstract:
1. A method for correcting for temperature error occurring during a measurement made using a coordinate measuring machine, comprising the steps of: a) determining and recording at a particular time the temperature of at least one part of the coordinate measuring machine including a feeler or combination of feelers, and at the same time determining and recording calibration data therefor, the calibration data being calculated from machine coordinates; b) repeating step a) at at least one later instant, and recording the new temperature and associated calibration data; c) determining and recording temperature correction data for each new temperature using the previously recorded temperatures and associated calibration data; d) during a subsequent measurement made using the coordinate measuring machine, determining the then present temperature of the at least one part of the coordinate measuring machine; and e) selecting and using the previously recorded temperature correction data corresponding to the then present temperature of the at least one part of the coordinate measuring machine, determined during the subsequent measurement, to correct for temperature error.