Linear electro-mechanical actuator, preferably for water cutting
AssigneeUmbra Cuscinetti S.P.A.
InventorsMarcello PIERMARINI, Massimiliano BOSI, Luciano PIZZONI, Nicola BORGARELLI
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Abstract
A linear electro-mechanical actuator (1) preferably for water cutting, makes it possible to significantly improve the working conditions of the actuator (1), so as to optimize its load capacity and increase the working life of the actuator (1), and makes it possible to reduce the risk of breakage or damage of the actuator (1) following loss of control of the movement aimed at producing the force applied by the actuator (1).
Claims20
A linear actuator (1) preferably for water cutting, comprising a motor operatively associated with a lead nut so to cause a rotation of the lead nut on itself,
- a translation unit (2) comprising a screw (3) coupled to the lead nut and at least one rod (4) constrained to the screw (3) by a constraining system (5), the actuator (1) comprising an anti-rotation system (6) designed to exert an anti-rotation torque (C) on the translation unit (2) so that the rotation of the lead nut causes a translation of the translation unit (2) along a direction of translation (X),
- wherein the constraining system (5) comprises elastic means by means of which the constraining system (5) is at least partly elastic at least in a direction which is transversal to the direction of translation (X), so as to at least partly absorb the radial loads acting parallel to the transversal direction during the rotation of the lead nut on the translation unit (2).
Dependencies are inferred from the claim text.