DISPLACEMENT AMPLIFYING DEVICE CAPABLE OF COMPENSATING MICRO DEFORMATION ACCORDING TO APPLYING PRE-LOAD

摘要

PURPOSE: A displacement increasing device capable of compensating infinitesimal deformation caused by applying pre-load is provided to enable to compensate the infinitesimal deformation of the displacement increasing device simultaneously applying the pre-load to a piezo-electric actuator, thereby improving precision and a quality. CONSTITUTION: A deformation frame(130) accommodates a piezo-electric actuator(110) in inside. The deformation frame comprises a supporting unit(131), a column unit(133), and a lever unit(137). A first pre-load applying member(150) is in contact with on a top surface of the piezo-electric actuator. A second pre-load applying member(170) is in contact with a bottom surface of the supporting unit. A spring unit(190) is respectively joined to front and rear surface units of the deformation frame.