Vibration testing device

Abstract

The purpose of this invention is to improve the forward accuracy of the excitation unit. One embodiment of the vibration testing apparatus (1) includes: a base (2); a vibration table (3) for mounting the test object; and at least one excitation unit (5, 6) for exciting the vibration table in a specified excitation direction. The excitation unit includes: a linear actuator (10) mounted on the base that outputs reciprocating linear motion in the excitation direction; and a linear guide (50X, 50Y) mounted on the base that transmits the reciprocating linear motion output from the linear actuator to the vibration table. The linear guide includes: a fixed frame (51X, 51Y) fixed to the base; a movable frame (53) driven by the linear actuator; and a slider (52S) that limits the movement direction of the movable frame in the excitation direction. The slider has a plurality of carriages arranged in the excitation direction.

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