GEOMETRICAL ERROR CORRECTION SYSTEM FOR MULTIAXIAL MACHINE TOOL

摘要

PROBLEM TO BE SOLVED: To provide a geometrical error correction system for multiaxial machine tool that can identify and correct a geometrical error of a multiaxial machine tool in a short time.;SOLUTION: A geometrical error correction system S for a machining center M comprises respective servo motors for translating a touch probe fitted to a main shaft head 2, a target sphere installed at a table 3, a controller 21, a trunnion unit 5, and the main shaft head 2, respective servo motors for rotating a cradle 4, the table 3, etc., and is configured to perform indexing operation for a rotary driving shaft under a plurality of conditions, to measure center coordinates of the target sphere under the respective indexing conditions by the touch probe, and then to identify and correct geometrical errors occurring between adjacent shafts on the basis of measurement results thereof. For the indexing operation for the rotary driving shaft, the rotary driving shaft is indexed to an overshoot position with the shortest distance and then indexed to an indexing start position.;COPYRIGHT: (C)2013,JPO&INPIT