HEAD Russian patent published in 1999 - IPC

FIELD: mechanical engineering; may be used in movable units, both in ultra-high precision metal cutting machines and in coordinate-measuring machines operating in adaptive conditions. SUBSTANCE: head has longitudinal and cross carriages installed on respective guides; screw with nut for lateral motion of cross carriage; pushers connected with nut for engagement with cross carriage; self-adjusting inserts located between cross carriage and pushers; piezoelectric elements installed between inserts and cross carriage and electrically connected in antiphase. EFFECT: higher accuracy of operation due to introduction of piezoelectric elements and provision of compensation of errors occurring in the course of machining. 1 dwg