To provide a boosting electric actuator using a rotational driving force of an electric motor by converting it into a linear driving force, which is operated with a small driving force in a stroke to reach a workpiece, and automatically switched to a large driving force after reaching the workpiece.
A reduction gear mechanism 2 composed of a plurality of gears and a clutch mechanism 3 are disposed between a rotating shaft 11 of the electric motor 1 and a linear motion body 53 which linearly moves by converting the rotation of the electric motor 1 by a ball screw mechanism. The clutch mechanism 3 is configured to automatically switch from a high-speed clutch plate 31 to a low-speed clutch plate 32 when a tip screw 54 of the linear motion body 53 abuts on the workpiece W during linear movement.
HIRAYAMA TATSURO
ITO NOBUTAKA
