Improved Rotary-Linear Actuation Assembly
AssigneeArol S.P.A.
InventorMarco Cipriani
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Abstract
A rotary-linear actuation assembly comprising a casing internally housing an output shaft arranged coaxial with an actuation axis (A) in a translationally and rotationally movable manner, at least two actuators, of which a first actuator is adapted to impose a translational movement along the actuation axis (A) on the output shaft and a second actuator is adapted to impose a rotary movement about the actuation axis (A) on the output shaft, and at least one position sensor adapted to detect an instant position of the output shaft inside the casing. At least one position sensor is mounted in fixed manner in respect of rotation about the actuation axis (A) and in fixed manner in respect of translation along the actuation axis (A) and faces at least a portion of the output shaft.
Claims15
A rotary-linear actuation assembly (10, 110) comprising a casing (25, 125) with which there are associated:
- an output shaft (14, 113) arranged coaxial with an actuation axis (A) in a translationally and rotationally movable manner;
- at least two actuators, of which a first actuator (11, 111) is adapted to impart a translational movement along the actuation axis (A) on the output shaft (14, 113) and a second actuator (12, 112) is adapted to impart a rotary movement around the actuation axis (A) on the output shaft (14, 113);
- and
- at least one position sensor (30, 130) adapted to detect an instant position of the output shaft (14, 113) inside the casing (25, 125);
- wherein said at least one position sensor (30, 130) is mounted in a rotationally fixed manner about the actuation axis(A) and in a translationally fixed manner along the actuation axis(A), and faces at least a portion (14b, 113a) of the output shaft (14, 113), and
- wherein the at least a portion (14b, 113a) of the output shaft (14, 113) bears, on the outer surface thereof, a two-dimensional mark (31, 131) that extends over at least an angular portion around the output shaft (14, 113) and at least an axial section along the axial extension of the output shaft (14, 113),
- whereby a single stationary sensor detects both the instant axial position and the instant angular position of the shaft.
(canceled)
Dependencies are inferred from the claim text.