Importance

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Abstract

An intensifier type of fluid actuator using air and water as working fluids therein includes first and second bodies that can be separate components or incorporated into a single structure. The first body includes a first manifold connected by a first tube to a second manifold to define an intensifier chamber, a third manifold connected by a second tube to the second manifold to define a reservoir chamber, and a fourth manifold connected by a third tube to the third manifold to define a work chamber. An intensifier piston is disposed within the intensifier chamber and has an outer surface in sealing and sliding engagement with the first tube. The intensifier rod is secured to the intensifier piston and extends through the second manifold into the reservoir chamber. The intensifier rod is movable through the third manifold into the work chamber. A reservoir piston is disposed within the reservoir chamber and has an outer surface in sealing and sliding engagement with the second tube. The reservoir piston includes an opening formed therethrough. The intensifier rod extends through the opening formed in the reservoir piston. The reservoir piston separates the reservoir chamber to define a water reservoir chamber and an air reservoir chamber in selective communication with a source of air. The second body includes a fifth manifold connected by a fourth tube to a sixth manifold to define a piston chamber. A work piston is disposed within the piston chamber and has an outer surface in sealing and sliding engagement with the fourth tube. A work rod is secured to the work piston and extends through the sixth manifold from the second body. A plurality of ports are provided for selectively providing pressurized fluid in the intensifier chamber, the reservoir chamber, the first work chamber, and the piston chamber to selectively extend the work rod into engagement with the workpiece. Water is used as the working fluid in the fluid reservoir chamber and the work chamber to eliminate any contamination issues if any leaks occur.

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