Hydraulically-operated micromanipulator apparatus
First Claim
1. 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; and
fine 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; and
the 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.
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Abstract
A hydraulically-operated micromanipulator apparatus is disclosed. The micromanipulator apparatus comprises:
a micromanipulator fine control unit including an operating-side piston finely movable with respect to an operating-side hydraulic cylinder and fine control means, either the operating-side piston or the operating-side hydraulic cylinder being stationarily retained, while the rest being finely operable by the fine control means;
a hydraulically-operated micromanipulator including an actuating-side piston finely movable with respect to an actuating-side hydraulic cylinder and a fine displacement member, the actuating-side hydraulic cylinder being connected to said operating-side hydraulic cylinder through a hose, either the actuating-side piston or the actuating-side hydraulic cylinder being stationarily retained, while the rest being attached to the fine displacement member; and
compensating means for compensating a pressure change of the hydraulic fluid between said operating-side hydraulic cylinder and said actuating-side hydraulic cylinder when ambient temperature changes.
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Citations
9 Claims
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1. 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; and fine 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; and the 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification