Patent ID: 6131480
Filing Date: 2000-10-17
Classification: B25J,C12M,G02B,Y10T

Abstract:
A hydraulically-operated micromanipulator apparatus, which comprises an operating unit and an actuating unit,said operating unit including:first operating-side hydraulic fluid chamber to be filled with hydraulic fluid, and second operating-side hydraulic fluid chamber to be filled with drift-prevention fluid; andfine control means for controlling volume of said first operating-side hydraulic fluid chamber;said actuating unit including;a first actuating-side hydraulic fluid chamber connected to said first operating-side hydraulic fluid chamber through a hose and filled with hydraulic fluid;a second actuating-side hydraulic fluid chamber connected to said second operating-side hydraulic fluid chamber through a hose and filled with drift-prevention fluid;first slider means having a stationary member and a sliding member, the sliding member being slidable with respect to the stationary member by volume change of said first actuating-side hydraulic fluid chamber;second slider means having a stationary member and a sliding member and attached to said first slider means, the sliding member being slidable with respect to the stationary member by volume change of said second actuating-side hydraulic fluid chamber;microtool fixing means mounted to said second slider means; andthe volume of hydraulic fluid between said first operating-side hydraulic fluid chamber and said first actuating-side hydraulic fluid chamber being substantially the same as that of drift-prevention fluid between said second operating-side hydraulic fluid chamber and said second actuating-side hydraulic fluid chamber, and volume change of hydraulic fluid being compensated by drift-prevention fluid when ambient temperature changes, thereby stationary retaining said microtool fixing means.