Electromagnetostrictive actuator

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnetostrictive-type device

Reexamination Certificate

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Details

C251S129060

Reexamination Certificate

active

07323960

ABSTRACT:
An actuator includes an electromagnetostrictive element that has one end located on a front side and the other end located on a rear side. An output shaft penetrates the electromagnetostrictive element and is pressurized toward the rear side of the electromagnetostrictive element. A housing houses therein the electromagnetostrictive element and the output shaft, and bearing portions respectively support the front side and the rear side of the output shaft. A bias spring is provided between the rear side of the output shaft and the housing, and a displacement sensor detects a position in an axial direction of the shaft.

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“Research on Small-Diameter Hole Processing with Oscillation Superimposed on Feed” by Hidetaka Kubota et al., pp. 1006-1009, vol. 61, No. 7, 1995 of The Journal of Japan Society for Precision Engineering.

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