Patent ID: 8908194

Claim:
A measuring machine comprising: a mobile unit to move a measurement sensor in a measurement volume, the mobile unit comprising a first mobile member movable along a first axis, a second mobile member movable along a second axis with respect to said first mobile member and a third mobile member movable along a third axis with respect to said second mobile member, said mobile members being movable under the thrust of driving means and at least one of said mobile members being subjected to dynamic deformations; a laser sensor provided with a laser emitter directly fixed to a first portion of said at least one of said mobile members and a target directly fixed to a second portion of said at least one of said mobile members and designed to receive a laser beam generated by the emitter; and means for compensating for measurement errors of the machine resulting from the dynamic deformations of said at least one of said mobile members and in response to displacement of a point of incidence of the laser beam on the target with respect to a reference position in undeformed conditions, the displacement of the point resulting from a relative displacement of the first and second portions of said at least one of said mobile members due to the dynamic deformations.