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Abstract

A self-centering vise having reduced vertical size capable of exerting on workpieces a force exceeding 2000 kg. The vise comprises a body, two or more jaws constrained to the body and actuators of the jaws. The jaws can be moved close to and away from a workpiece gripping axis. Each actuator comprises a thrust element susceptible to displacements by a pressurized fluid. Each jaw comprises two guides inclined and symmetrical with respect to the displacement direction of the same jaw, and the thrust element of each actuator comprises two walls inclined and symmetrical with respect to the displacement direction of the same thrust element. Each actuator exerts its thrust simultaneously on two jaws, by slidingly engaging the guides of two jaws with its own inclined walls, according to a configuration that can be defined double inverted wedge configuration.

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First Claim